Session Index

S5. Optical Design, Testing and Engineering

Optical Design, Testing and Engineering I
Friday, Dec. 2, 2022  13:00-15:00
Presider: Chuan-Chung Chang、Guo-Dung Su
Room: 2F A201
13:00 - 13:30
Manuscript ID.  0898
Paper No.  2022-FRI-S0501-I001
Invited Speaker:
Daewook Kim
Closed-Loop Adaptive Thermoforming Process of Precision Antenna Panels
Daewook Kim, University of Arizona (USA)

Future large-scale radio telescope array observatories, such as the next-generation Very Large Array, involve extremely large collection areas of antenna. These collection areas are divided into smaller panel segments, which typically require their own uniquely shaped molds to manufacture. For these projects to be cost-effective to support the science community, efficient fabrication and flexible metrology of the many differently-shaped freeform panels are needed. This paper summarizes the development of an adaptive freeform panel molding technology that greatly improves manufacturing efficiency due to its repeatable and reusable nature

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13:30 - 13:45 Award Candidate (Paper Competition)
Manuscript ID.  0053
Paper No.  2022-FRI-S0501-O001
Jui-Tse Yang Dynamic Remote Focusing by Model-based Adaptive Optics
Jui-Tse Yang, Cheng-Jung Yang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

In optical microscopy system, dynamic remote focusing is achieved by adjusting the defocus term of Zernike polynomials. With developed model-based adaptive optics (AO), we can further compensate the aberrations in addition to remote focusing. Compared with the way by moving the objective or the sample by mechanical stages. our system can change the focus position rapidly up to about ±40 μm. The other aberrations can be estimated and corrected by the model-base AO in 2 ms. The results have shown that the heat disturbance can be compensated while maintaining the remote focusing ability.

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13:45 - 14:00 Award Candidate (Paper Competition)
Manuscript ID.  0804
Paper No.  2022-FRI-S0501-O002
Hsiao-Chiao Fang Design of vehicle forward light with non-orthogonal multi-segment reflector
Hsiao-Chiao Fang, Jing-Hsuan Peng, Shih-Kang Lin, Chi-Shou Wu, Tsung-Hsun Yang, Yeh-Wei Yu, Ching-Cherng Sun, Naitonal Central University (Taiwan)

In this paper, a non-orthogonal multi-segment reflector headlight structure is proposed to improve the longitudinal stray light caused by the horizontal gap of orthogonal multi-segment reflector headlights.

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14:00 - 14:15 Award Candidate (Paper Competition)
Manuscript ID.  0274
Paper No.  2022-FRI-S0501-O003
Zi-Wei Li Achromatic 180° linear polarization rotator realized by duel-frequency liquid crystal.
Zi-Wei Li, Li-Min Chang, Ting-Mao Feng, Tsung-Hsien Lin, National Sun-Yat Sen University (Taiwan)

We demonstrate a single-element achromatic polarization rotator based on a dual-frequency chiral liquid crystal that can achieve continuously 0° to 180° linear polarization modulation. The angle of linear polarization rotation can be modulated by applying an electric field in different strength and frequency, and it has low dispersion in the whole visible spectrum and maintains a high degree of linear polarization. To verify the mechanism, the simulation of the optical polarization modulation and the director of the liquid crystal is also presented in this this study. This design has great potential in technologies based on polarization.

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14:15 - 14:30 Award Candidate (Paper Competition)
Manuscript ID.  0121
Paper No.  2022-FRI-S0501-O004
TSUNG-TA CHAN Effects of supporting plate position of dihedral corner reflector array on floating imaging quality
TSUNG-TA CHAN, Hsien-Chi Lai, I-Chih Huang, National Taiwan University (Taiwan); Kuan-Lin Lai, Gang-Ting Zhang, Chia- Lin Wu, Chao-Ching Ho, National Taipei University of Technology (Taiwan); Jia-Han Li, National Taiwan University (Taiwan)

The ray-tracing method is used to simulate the floating image of symmetric square column array and the results show that the structure with the bottom of the supporting plate has stronger intensity of floating image and the structure with the symmetric structure can suppress the stray light more capable.

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14:30 - 14:45 Award Candidate (Paper Competition)
Manuscript ID.  0464
Paper No.  2022-FRI-S0501-O005
Hung-Wei chang Performance analysis of reflector cups based on different materials
Hung-Wei chang, Chang-Kun Zheng, Chi-Shou Wu, Shih-Kang Lin, Tsung-Hsun Yang, Yeh-Wei Yu, national central university (Taiwan)

This article discusses the influence of different materials on the reflector cup. We analyze the samples made of ABS, PMMA, and Al. The reflector cup will be curved due to thermal stress, which will lead to an increase in the brightness of the dark area of the regulations in even more severe cases, it will cause glare and fail to pass regulations. The analysis standard will determine whether the reflector cup performs well through the K-mark regulations of the bicycle lamp.

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14:45 - 15:00 Award Candidate (Paper Competition)
Manuscript ID.  0604
Paper No.  2022-FRI-S0501-O006
Arvind Mukundan Detection of Particulate Matter 2.5 by Hyperspectral Imaging Engineering
Arvind Mukundan, Yu Ming Tsao, Hsiang Wang Chen, National Chung Cheng University (Taiwan)

Airborne particles (PM2.5) may spread through the atmosphere and enter the lungs leading to serious health problems. By merging hyperspectral imaging (HSI) with deep learning, a broad-based, inexpensive approach for identifying air pollution is designed. The picture captured by the drone camera is enhanced by modeling the visible-light HSI technology. In order to identify the visual characteristics of air pollution, 3D Convolutional Neural Network Auto Encoder and principal components analysis (PCA) are combined with VGG-16 (Visual Geometry Group). The images are categorized as good, moderate, and severe. According to the findings, the PCA +VGG-16 has the best average classification accuracy.

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S5. Optical Design, Testing and Engineering

Optical Design, Testing and Engineering II
Friday, Dec. 2, 2022  15:15-17:00
Presider: Yi-Chin Fang、Chuen-Lin Tien
Room: 2F A201
15:15 - 15:30 Award Candidate (Paper Competition)
Manuscript ID.  0677
Paper No.  2022-FRI-S0502-O001
Chao Wen Liang Use Wavefront Sensor to Evaluate the Head Mount Display
Yu Ting Cho, Chao Wen Liang, National Central University (Taiwan)

This paper proposes a new head-mounted device evaluation system, which uses a large-amplitude wavefront detector to measure the MR device, and uses program control to change the position of the light field. Finally, various information such as light intensity and aberration of the light source are obtained.

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15:30 - 15:45 Award Candidate (Paper Competition)
Manuscript ID.  0680
Paper No.  2022-FRI-S0502-O002
Pei-Yu Tang Technological process optimisation and measurement of image quality of the zoom metalenses
Pei-Yu Tang, Chia-Yu Teng, Ming-Yu Tsai, Jin-Li Weng, Chun-Yuan Fan, Guo-Dung J. Su, National Taiwan University (Taiwan)

Metalens is constructed of an artificial structure with a subwavelength period. It starts by growing GaN on the sapphire substrate and then spin-coated positive photoresist. Metalens pattern is transferred onto photoresist by an exposure process with EBL, and 50 nm thick nickel film is deposited on the sample. Subsequently, the photoresist is removed by the lift-off process. Finally, we employ the top-down approach to accomplish high-aspect-ratio GaN nanopillars. Our measurement setup combines with a twisted nematic liquid crystal to demonstrate the focusing ability of metalens to observe the light image focused by metalens in different polarized incident lights.

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15:45 - 16:00 Award Candidate (Paper Competition)
Manuscript ID.  0022
Paper No.  2022-FRI-S0502-O003
Jui Chi Chang Optical Dispersion Identification with Deformable Mirror by Spatial Spectral Interferometry
Jui Chi Chang, Chia Yuan Chang, National Cheng Kung University (Taiwan)

Optical dispersion could severely affect pulse duration in ultrashort pulse laser. Therefore an accurate dispersion measurement and temporal pulse shaper is demonstrated for pulse compression. The present study proposes a 4-f deformable mirror (DM) pulse shaper integrated with spatial spectral interferometer (SSI) and SEA TADPOLE (spatially encoded arrangement temporal analysis by dispersion a pair of light e-field). The voltage vectors of DM are identified based on optical phase slope variation and are implemented with closed-loop PI controller. The experiment results show that the dispersion mode can be identified , and the identified modes shows great linearity with DM voltages squared.

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16:00 - 16:15 Award Candidate (Paper Competition)
Manuscript ID.  0745
Paper No.  2022-FRI-S0502-O004
Chi Sun Light Collimating with Use of Metalenses for Spatial Incoherence
Chi Sun, Jun-Hsun Liao, Guo-Dung Su, National Taiwan University (Taiwan)

In this research, we demonstrate metalenses for collimation with different deflection angles. Because of the reversibility of the optical path, we use the reverse structure of imaging, i.e., several dipole sources placed on the focal point in front of metalenses. The divergent angles of the nearly collimated beams are more than plane waves by about +-0.15 degrees at full-width at half-maximum (FWHM), and the efficiencies are all above 70%.

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16:15 - 16:30 Award Candidate (Paper Competition)
Manuscript ID.  0841
Paper No.  2022-FRI-S0502-O005
Guan-Fu Sung Electrically Tunable Defect Modes in a Photonic Structure with Liquid Crystal for a Miniature NIR Spectrometer
Guan-Fu Sung, College of Photonics (Taiwan); Shun-Yi Chiu, Institute of Imaging and Biomedical Photonics (Taiwan); Yi-Cheng Chang, Institute of Lighting and Energy Photonics (Taiwan); Yu-Chen Liou, Institute of Photonic System (Taiwan); Chin-Pin Yeh, Apogee Optocom (Taiwan); Wei Lee, Institute of Imaging and Biomedical Photonics (Taiwan)

An optical module based on a liquid crystal (LC)-in-cavity structure is proposed for a miniature near-infrared spectrometer. By alternately coating dielectric materials on a glass substrate to form a multilayer film and allowing such two identical dielectric mirrors coated with conductive layers to sandwich a LC defect layer, defect modes within the photonic bandgap (PBG) can be generated. The wavelengths of the transmitted peaks of the defect modes can be manipulated by AC voltage. Because of the small volume, easy fabrication and low cost, this PBG structure characterized by tunable defect modes is an outstanding candidate for miniature spectrometer development.

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16:30 - 17:00
Manuscript ID.  0964
Paper No.  2022-FRI-S0502-I001
Invited Speaker:
Johann Du Toit
Exploring NewSpace approach for earth observation payloads
Johann Du Toit, Simera Sense (South Africa)


S5. Optical Design, Testing and Engineering

Optical Design, Testing and Engineering III
Saturday, Dec. 3, 2022  10:45-12:00
Presider: Zong-Xian Lee、Jui-Wen Pan
Room: 2F A201
10:45 - 11:15
Manuscript ID.  0899
Paper No.  2022-SAT-S0503-I001
Invited Speaker:
Kenji Konno
Progress in color and light measurement instruments
Kenji Konno, Konica Minolta (Japan)

Color and brightness are human perceptions, not physical quantities like spectrum or energy.
International standards play an important role in quantifying color and brightness.
Various types of chromatic measuring instruments can output colorimetric values in accordance with international standards.
This presentation will give examples of how various color measurement instruments are used in real industries and introduce the latest progress of instruments.
Finally, the friendship between the optical societies of Taiwan and Japan will be mentioned.

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11:15 - 11:30
Manuscript ID.  0409
Paper No.  2022-SAT-S0503-O001
Thi-Thu-Ngoc Le Banana Preservation Extension by UVC Radiation Through Precise Monitoring LED Irradiation Cavity
Thi-Thu-Ngoc Le, National Central University (Taiwan); Chung-Ta Liao, Taichung District Agricultural Research and Extension Station (Taiwan); Shih-Kang Lin, Chi-Shou Wu, Quang-Khoi Nguyen, Tsung-Hsun Yang, Yeh-Wei Yu, National Central University (Taiwan); Ching-Cherng Sun, National Central University (Taiwan), National Yang-Ming Chiao Tung (Taiwan)

The preliminary cavity based on UVC LEDs with dimensions of 30 × 30 × 30 cm was designed and fabricated to aid in reducing black spots on bananas with the aim of application in the factory conveyor belts. The UVC irradiance distribution was thoroughly monitored for many sections at different box heights in both simulation and measurement. In vivo conditions, the optimal UVC dose is proposed from 0.030 to 0.045 kJ/m2 for the one-time treatment when considering the upper surface of bananas. The cavity promises to bring a lot of application potential to aid banana preservation in factories and households.

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11:30 - 11:45
Manuscript ID.  0185
Paper No.  2022-SAT-S0503-O002
Dong-Yi Wang Accurate 3D Microfabrication by Noninvasive Inspection based on Multiphoton Microscopy
Dong-Yi Wang, Jyun-Zong Yu, Jui-Chi Chang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

The ultrafast laser processing is an essential technique for micro/nano fabrication. The photochemical reaction is initialized by nonlinear two-photon absorption inside the focal volume of the objective. Together with the three-axis laser scanning mechanism, three dimensional (3D) and complex microstructures could be developed by two-photon lithography (TPL). However, TPL would suffer the refractive index change during laser processing and result inaccurate structure. This paper presents the laser processed SU-8 structures exhibit two-photon fluorescence which intensity is varied with different exposure dose. The reconstructed 3D fluorescence information could thus assist laser scanning path correction during laser processing.

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11:45 - 12:00
Manuscript ID.  0447
Paper No.  2022-SAT-S0503-O003
Jheng-Yu Chen Optical Design for a High-contrast Light Pattern with the use of the Cylindrical Lens Array
Jheng-Yu Chen, Jie-Xun Liu, Chi-Shou Wu, Shih-Kang Lin, Tsung-Hsun Yang, Yeh-Wei Yu, Ching-Cherng Sun, National Central University (Taiwan)

The design of this headlight is different from the common headlight designs on the market. We try to concentrate the energy on the upper edge of the light shape and the regulatory area and design the upper edge of the light shape to have several secondary strong points similar to the upper edge of the light shape. The shape is wide and narrow at the bottom, and the one-dimensional cylindrical lens array structure is used to extend the light shape horizontally. The superposition of energy creates a light shape with high contrast and can simultaneously meet multiple regulatory requirements.

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S5. Optical Design, Testing and Engineering

Optical Design, Testing and Engineering IV
Saturday, Dec. 3, 2022  13:00-15:15
Presider: Cheng-Mu Tsai、Bo-Hao Peng
Room: 2F A201
13:00 - 13:15
Manuscript ID.  0100
Paper No.  2022-SAT-S0504-O001
Cheng-Yu Wu Deformable Mirror with Tip-tilt Compensation for Remote Focusing
Cheng-Yu Wu, Jui-Tse Yang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

Instead of moving the mechanical stage for axial scanning, the wavefront of the laser beam is modulated to effectively move the laser focus. In this paper, a deformable mirror (DM) with tip-tilt compensation is placed at angle of 45 degree with the optical axis so that the reflected laser power efficiency can be maximized due to no beam splitter is required. We have shown the defocus can be successfully performed with the combination of Zernike polynomials even if the DM is not orthogonal to the optical axis. The results are confirmed with home-made Shack-Hartmann wavefront sensor (SHWS).

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13:15 - 13:30
Manuscript ID.  0742
Paper No.  2022-SAT-S0504-O002
Dun-Ren Liu Path Following of Tracked Vehicle Based on Model Predictive Controller with Identified Dynamic Model
Chun-Ting Sung, Dun-Ren Liu, Chia-Wei Hsu, Wen-Chuan Tseng, College of Photonics (Taiwan); Meng-Hui Hsu, Department of Mechanical Engineering (Taiwan); Shean-Jen Chen, College of Photonics (Taiwan)

A data-driven system identification is implemented to estimate the dynamic model of a tracked vehicle in farm as a state-space linear model for model predictive control (MPC). Compared with conventional MPC with a kinematic model, the computation time of MPC with the identified linear model is saved more than 2/3, and the tracked vehicle with this control approach has achieved superior S-curve and L-shape path following.

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13:30 - 13:45
Manuscript ID.  0179
Paper No.  2022-SAT-S0504-O003
Jo-Hsiang Chen Study of High Polarized Nanostructure Light-Emitting Diode
Jo-Hsiang Chen, Yu-Ming Huang, Tsung-Sheng Kao, Hao-Chung Kuo, Electro-Optical Engineering,National Yang Ming Chiao Tung University (Taiwan)

In this study, we investigate the characteristic difference between the two different configurations of the three-dimensional shell-core nanorod LED. We achieve a degree of polarization of 0.545 for tip-free core-shell nanorod LED and 0.188 for tip core-shell nanorod LED by combining the three dimensional (3D) structure LED with photonic crystal. These 3D LEDs may pave the way for future novel optoelectronic components.

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13:45 - 14:00
Manuscript ID.  0061
Paper No.  2022-SAT-S0504-O004
Shao-Wei Huang Real-time Adaptive Ultrashort Pulse Compressor for Multiphoton Microscopy
Shao-Wei Huang, Shu-Yu Chang, Jui-Chi Chang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

The multiphoton excited fluorescence microscopy adopts ultrashort pulse laser together with a high numerical aperture (NA) objective to induce nonlinear optical effects. But the laser pulse pass through many dispersive elements making pulse width wider, so we have developed a laser pulse compressor with a deformable mirror (DM) to compensate the optical dispersion. The FROG (frequency-resolved optical gating) is used to obtain a spectrogram and DOES (direct optical-dispersion estimation by spectrogram) algorithm would estimate the GDD (group-delay dispersion) in real time. The proposed adaptive ultrashort pulse compressor finally is integrated with home-mode two-photon microscope to improve its fluorescence efficiency.

  Preview abstract
14:00 - 14:15
Manuscript ID.  0352
Paper No.  2022-SAT-S0504-O005
Jui-Fu Tang Novel approach for high-resolution, ultra-smooth photocured DLP printing technology
Jui-Fu Tang, Kuan-Wu Lin, Tsung-Hsien Lin, Wei-Chun Lin, National Sun Yat-sen University (Taiwan)

Recently, DLP 3D printing has advantages of high resolutions, low cost, and easy operation. However, this technology still exists several technical difficulties that need to be solved. Due to the structure of the LCD, the morphology of the printed sample reveals pixel texture defect under SEM image, which leads to surface irregularity. This research has redesigned the internal LCD system of the 3D printer. The newly designed LCD system has largely alleviated the texture defect caused by the dark zone between pixels. The results successfully demonstrated a nearly perfect surface printed by the modified LCD system without scarifying print resolution.

  Preview abstract
14:15 - 14:30
Manuscript ID.  0119
Paper No.  2022-SAT-S0504-O006
Chao-Hsien Chen Solving Aspheric Singlets and Cemented Doublet with Given Primary Aberrations
Chao-Hsien Chen, National Kaohsiung University of Science and Technology (Taiwan)

Algebraic algorithms are derived for solving aspheric singlets and cemented doublets. Singlets can meet the targets of focal length, spherical aberration, and central coma; cemented doublets can even meet the longitudinal chromatic aberration. Examples are demonstrated, including a DVD-rewritable pickup head singlet and a cemented doublet in a telescope system.

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14:30 - 14:45
Manuscript ID.  0422
Paper No.  2022-SAT-S0504-O007
Bo-Xiang Peng Direct TIR Lens with cylindrical lens array for K-mark Low Beam Design
Bo-Xiang Peng, Chi-Shou Wu, Tsung-Hsun Yang, Yeh-Wei Yu, Ching-Cherng Sun, National Central University (Taiwan)

Using refractive optical elements to first collimate the light emitted by the LED and process the optical design. Then the cylindrical lens array can effectively spread the light pattern in the horizontal direction, homogenize the energy, and suppress the dark area more effectively, which helps shape the high-contrast light patterns.

  Preview abstract
14:45 - 15:00
Manuscript ID.  0767
Paper No.  2022-SAT-S0504-O008
Po-Hao Tseng Non-destructive inspection of compound semiconductors using optical coherence tomography
Po-Hao Tseng, Chuan-Bor Chueh, National Taiwan University (Taiwan); Hao-Chung Kuo, National Yang Ming Chao Tung University (Taiwan); Ting-Hao Chen, Hsiang-Chieh Lee, National Taiwan University (Taiwan)

Defects in compound semiconductors may decrease the performance of the devices. In this study, we demonstrated the new defect detecting method on silicon carbide (SiC) wafer using multiple swept-source optical coherence tomography (SS-OCT) systems with different central wavelengths, including 1060 nm, 1310 nm, and 1690 nm. The location, distribution, and size of defects in silicon carbide (SiC) wafer were analyzed quantitatively using the volumetric OCT datasets of the SiC sample acquired.

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15:00 - 15:15
Manuscript ID.  0143
Paper No.  2022-SAT-S0504-O009
Tzu-Chen Yu The design of freeform lens with user-defined irradiance and high collimation, by using numerical method
Tzu-Chen Yu, Cheng-Mu Tsai, Graduate Institute of Precision Engineering (Taiwan)

This paper presents the design of a freeform lens that can convert a Gaussian distributed beam to a specific irradiance while maintaining high collimation. The construction of the lens is based on a numerical method derived from Snell's law.

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S5. Optical Design, Testing and Engineering

Poster Session I
Saturday, Dec. 3, 2022  14:00-16:00
Room: 3F TR-A318

Manuscript ID.  0329
Paper No.  2022-SAT-P0501-P001
Shang-Yang Yu Photothermal Scanning Annealing on Crystallization of Gold Films
Shang-Yang Yu, Chang Gung University (Taiwan); Min-Hsiung Shih, Academia Sinica (Taiwan); Yi-Han Kuo, Chang Gung University (Taiwan); Jiunn-Woei Liaw, Chang Gung University (Taiwan), Ming Chi University of Technology (Taiwan)

We establish a laser-scanning annealing system in a microscope to improve the optical properties of a polycrystalline Au film. The results of material characterizations show that the uniformity of crystallographic orientation of (111) of annealed Au film and the grain growth is improved. Additionally, the corresponding optical density (OD) and the extinction coefficient of the annealed film are significantly reduced in the NIR regime, owing to the decrease in the loss of free electrons’ scattering at the grain boundary. In addition, the integrity of the treated film is kept intact without pinholes, usually produced by conventional thermal annealing.

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Manuscript ID.  0722
Paper No.  2022-SAT-P0501-P002
Chao-Wen Liang Fabrication and Verification of Large Wavefront Sensor
Lin-Guang Lin, Chao-Wen Liang, National Central University (Taiwan)

The Shack-Hartmann Wavefront Sensor is calibrated through a three-dimensional coordinate system and a rotating platform with a dual-axis precision optical encoder, and the relationship between the point spread function and the incident angle is established for each Micro Lens Array (MLA), In terms of software, the High Dynamic Range (HDR) can reduce the impact of CMOS Sensor noise on the measurement. And verify the accuracy of the Shack-Hartmann Wavefront Sensor.

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Manuscript ID.  0664
Paper No.  2022-SAT-P0501-P003
Chao-Wen Liang Transmission and reflection dual wavefront measurement of medium and large size lenses
Shih-Min Peng, Chao-Wen Liang, National Central University (Taiwan)

The errors generated during the production of medium and large size lenses make the aberrations around the lens too large to be measured with an interferometer. In this study, a wavefront sensor and field lens were used to complete the lens aberration measurement.

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Award Candidate (Paper Competition)
Manuscript ID.  0340
Paper No.  2022-SAT-P0501-P004
Kuan-Yi Chou Using interferometry to evaluate asphere for space optics
Hsing-Yu Wu, System Manufacturing Center (Taiwan), Department of Optics and Photonics & Center for Astronautical Physics and Engineering (Taiwan); Kuan-Yi Chou, Department of Physics (Taiwan); Shao-Rong Huang, Department of Optics and Photonics & Center for Astronautical Physics and Engineering (Taiwan), Department of Physics (Taiwan); Lin-Jen Hsiao, System Manufacturing Center (Taiwan); Sheng-Feng Lin, Po-Hsuan Huang, National Space Organization (Taiwan); GuoYu Yu, Department of Optics and Photonics & Center for Astronautical Physics and Engineering (Taiwan), National Space Organization (Taiwan); David Walker, School of Computing and Engineering (UK); Jin-Cherng Hsu, Department of Physics (Taiwan)

Space optical telescopes use complex surfaces to reduce total optical elements but maintain high-quality images. Modern space mirrors can be evaluated by computer-generated holograms and null lenses to assess such kinds of highly accurate surfaces. This paper proposed a cost-effective interferometric technique to examine an elliptical aspherical surface and its measurement of the conic constant was 0.43. The result indicates that this technique can be a potential method used to evaluate aspheres for space optical telescopes in the near future.

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Award Candidate (Paper Competition)
Manuscript ID.  0092
Paper No.  2022-SAT-P0501-P005
Yu-Yin Chen Temperature-insensitive Fiber-tip FPI Refractometer Based on Double-side Open Cavity
Yu-Yin Chen, Chin-ping Yu, National Sun Yat-sen University (Taiwan)

We demonstrate a fiber-tip refractive index (RI) sensor based on a double-side open Fabry-Pérot interferometer (FPI). Very high RI sensing sensitivity of 1127 nm/RIU can be observed. Additionally, experimental results indicate that the gas pressure sensitivity is as high as 25.5 pm/psi with a very low temperature sensitivity of −0.29 pm/℃. The FPI cavity has two opens to realize very short response time and recovery time of 42ms and 104ms, respectively.

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Award Candidate (Paper Competition)
Manuscript ID.  0158
Paper No.  2022-SAT-P0501-P006
Wei-Bo Liu Optimization of Ultra-thin Mini-LEDs array with Quantum Dots Film white light backlight module
Wei-Bo Liu, National Yang Ming Chiao Tung University (Taiwan)

This study proposes an ultra-thin mini-LEDs array with quantum dots film white light backlight module to achieve excellent quality and uses deep reinforcement learning (DRL) architecture for optical design. In the DRL architecture, to solve the computing environment problems of the multiple parameters of the module, this study proposes an environment control agent and virtual-realistic workflow to ensure that the design environment parameters are highly correlated with experimental results.
We successfully designed a mini-LED backlight module with 82.1% uniformity performance and the design calculation time required by the DRL method is only 36% of the traditional optical simulation.

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Manuscript ID.  0085
Paper No.  2022-SAT-P0501-P007
Pin Han A Data Transmission Method with Spectral Switches via Electroabsorption
Pin Han, Yung-Tsai Lai, Wu-Chen Wu, Mu-Huang Chen, National Chung Hsing University (Taiwan)

In the past, the waveguide electroabsorption effect has generally been used as an
intensity modulator for quasi-monochromatic light, such as lasers. Here, we study how this
effect affects polychromatic light spectra. We find that for light with a Gaussian distribution
spectrum, the spectral peak shift (red shift or blue shift) can be controlled by the magnitude of
the applied voltage This result can be used as a data transmission scheme at the integrated
chip level or in free space. It may offer a good option for some other light sources.

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Award Candidate (Paper Competition)
Manuscript ID.  0477
Paper No.  2022-SAT-P0501-P008
Yueh-Jung Lee Development of a common-path speckle interferometer for displacement and angle measurements
Yueh-Jung Lee, Hung-Lin Hsieh, National Taiwan University of Science and Technology (Taiwan)

An innovative speckle interferometer based-on common-path (CP) design is proposed in this study. By using the design concept of CP, the reference and measurement beams of the proposed interferometer would suffer from similar disturbances. Surrounding disturbances can then be compensated in the interference signal making the proposed speckle interferometer much with high system stability for measurements of displacement and angle.

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Award Candidate (Paper Competition)
Manuscript ID.  0027
Paper No.  2022-SAT-P0501-P009
Yi-Lun Su The Periscope-Type of Mobile Phone Lens with 13 x Optical Zoom Design and Thermal Properties Analysis of Temperature -5∘ to 50∘
Yi-Lun Su, National Central University (Taiwan), National Applied Research Laboratories (Taiwan); Wen-Shing Sun, National Central University (Taiwan); Che-Chin Chen, National Applied Research Laboratories (Taiwan); Shih-An Wang, National Central University (Taiwan)

This paper uses a right-angle prism and 5MP COMS sensor in the optical system design that prism thickness is defined as the mechanism size, and study and analyze imaging quality for the environment temperature

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Manuscript ID.  0667
Paper No.  2022-SAT-P0501-P010
Chao-Wen Liang Comparison of Linearized Focal-Plane Technique and Gerchberg-Saxton Phase Retrieval Algorithm
Chi-Chao Chen, Chao-Wen Liang, National Central University (Taiwan)

Shack-Hartmann Wavefront Sensor (SH-WFS) is widely used in various fields. The measurement principle is sample the wavefront through the microlens array, and obtain the slope through the center of gravity of the spot, so as to reconstruct the wavefront. Using centroid method ignores the spot deformation caused by the high-frequency wavefront. Therefore, the advantages and disadvantages of the Gerchberg-Saxton Algorithm (GSA) and Linearized Focal-Plane Technique (LIFT), simulate the situation encountered in practical applications, verify the accuracy of the algorithm through simple experiments, and analyze the more suitable technology. and choose the most suitable one.

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Award Candidate (Paper Competition)
Manuscript ID.  0259
Paper No.  2022-SAT-P0501-P011
Chi-Hung Li Single Photon Detection Characterization of InGaAs/InP Avalanche Photodiode at Different Temperatures Using 300 MHz Sine Wave Gating
Chi-Hung Li, Wen-Jeng Ho, Chen-Hung Fan, Jheng-Jie Liu, National Taipei University of Technology (Taiwan)

A high speed 300 MHz sine wave gating single-photon detection is proposed. To obtain the optimal single-photon detection parameters, different experimental parameters and working conditions are used to analyze these parameters. In this study, the InGaAs/InP avalanche photodiode working in Geiger mode for single-photon detection is based on sine wave gating scheme. Impressive results in low dark-count rate of 21.27 kHz, high single-photon detection-efficiency of 14.6 %, and low after-pulsing of 9.83 %, and low time jitter of 1.357 ns were obtained under the operation temperature of -30 ºC, excess biasing of 1.9V, and gated-frequency of 300 MHz.

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Award Candidate (Paper Competition)
Manuscript ID.  0115
Paper No.  2022-SAT-P0501-P012
Yao-Lun Ku Alignment of Diffractive Optical Elements by Deep Learning
Yao-Lun Ku, Ya-Ti Chang Lee, Chung-Hao Tien, National Yang Ming Chiao Tung University (Taiwan)

A deep learning algorithm is proposed for active alignment of diffractive optical element (DOE) assembly. The approach utilizes a residual convolutional neural network (ResNet) to perform a direct pose estimation from a given measurement, which indicates the misalignment effect. The network was trained with diffraction patterns labeled the corres-ponding poses in 5 degrees of freedom (5-DOF). In our experiment, 5-DOF poses could be predicted and a range of ±180 µm in translation was confirmed with prediction errors 6.930 µm in Y-axis and 6.035 µm in X-axis, respectively.

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Manuscript ID.  0231
Paper No.  2022-SAT-P0501-P013
Jing-Lin Chen Constructing ion beam figuring for highly accurate optics
Hsing-Yu Wu, National Chung-Shan Institute of Science & Technology (Taiwan), National Center University (Taiwan); Li-Siang Shen, Fu Jen Catholic University (Taiwan); Li-Jen Hsiao, National Chung-Shan Institute of Science & Technology (Taiwan); Shao-Rong Huang, National Center University (Taiwan), Fu Jen Catholic University (Taiwan); Jin-Cherng Hsu, Jing-Lin Chen, Fu Jen Catholic University (Taiwan); Sheng-Feng Lin, National Applied Research Laboratories (Taiwan)

Ion beam figuring (IBF) can be used to fabricate highly accurate and low surface textures for highly accurate optics. In this paper, this advanced technology is being developed and primary results were commented on the fixed-point polished process on B270 optical glasses. The nearly Gaussian profile of removal with low roughness demonstrated that this process can be constructed for a full processing process.

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Award Candidate (Paper Competition)
Manuscript ID.  0637
Paper No.  2022-SAT-P0501-P014
Chun-Yu Chiang Multilayer Interference Filter Design with Low Residual Stress and Image Contrast Enhancement
Chuen-Lin Tien, Chun-Yu Chiang, Shu-Hui Su, Feng Chia University (Taiwan)

We propose a dual-band multilayer interference filter to improve image contrast. The interference filter stack was designed as (Ta2O5/SiO2)4Ta2O5. We used electron-beam evaporation with ion-assisted deposition to prepare single-band and dual-band notch filters. The proposed notch filter of two wavelengths was respectively coated on the double-sided glass substrate. The 9-layer notch filter was evaluated by using USAF 1951 pattern and a CMOS camera, the image contrast ratio can be improved from 0.607 to 0.759. Besides, the residual stress value is −294.08 MPa for the single-band notch filter and 8.11 MPa for the double-sided coating notch filter (dual-band), respectively.

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Manuscript ID.  0597
Paper No.  2022-SAT-P0501-P015
Yong-Sheng Lin Study of Optical Efficiency and Stray Light of Fresnel Lenses
Yong-Sheng Lin, Chi-Shou Wu, Shih-Kang Lin, Tsung-Hsun Yang, Yeh-Wei Yu, Ching-Cherng Sun, National Central University (Taiwan)

This paper analyzes Fresnel lenses with different numerical apertures and thicknesses to find the best solution to improve their optical efficiency. At the end of this paper, with simulation analysis and experiments, a method that can effectively enhance optical efficiency is obtained and only cause a slight decrease in focus energy (less than 5%). This result is an improvement in focusing ability.

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Manuscript ID.  0635
Paper No.  2022-SAT-P0501-P016
Shu-Hui Su Influence of Optical Notch Filters on Visual Contrast Sensitivity
Chuen-Lin Tien, Shu-Hui Su, Feng Chia University (Taiwan); Ching-Ying Cheng, Chung Shan Medical University (Taiwan)

This paper presents the effect of optical notch filters on contrast sensitivity in patients with dry eye syndrome at different spatial frequencies. The parameters of contrast sensitivity are measured by using sine wave contrast test (SWCT). The dual wavelength notch filter has a significant anti-glare effect, which is used to reduce glare obstacles or discomfort and provide better visual quality. The results show that the center wavelength of 620 nm multi-layer notch filter has better contrast sensitivity at mid- and low frequencies, meanwhile, the center wavelength of 480 nm notch filter has the best performance at high spatial frequency.

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Manuscript ID.  0266
Paper No.  2022-SAT-P0501-P017
Dung Ngoc Nguyen Study on vibration analysis of Michelson interferometer by comparing two light interference experiments
Dung Ngoc Nguyen, National Kaohsiung University of Science and Technology (Taiwan)

Vibration is a mechanical phenomenon where by oscillation occur about an equilibrium point. Vibration can be desirable: for example, the motion of a tuning fork, the reed in a woodwind instrument or harmonica, a mobile phone, or the cone of a loudspeaker.
In many cases, however, vibration is undesirable, wasting energy and creating unwanted sound. Such vibrations could be caused by imbalances in the parts.
In this paper, vibration is tested by measuring the change of light power of two experiments under the same environmental conditions and the same input light power.

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Manuscript ID.  0672
Paper No.  2022-SAT-P0501-P018
Jyh-Rou Sze Pseudo Non-diffraction Beam of Aspherical Lens System applied in NIR Laser Ablation System
Jyh-Rou Sze, Taiwan Instrument Research Institute,National Applied Research Laboratories. (Taiwan); An-Chi Wei, National Central University (Taiwan)

The Pseudo non-diffraction beams with the properties of narrow lateral spot and almost constant intensity axial distribution is carried out, and applied to the thin film drilling of NIR laser ablation technology. The experimental result shows that the pseudo nondiffraction beam can improve the sidewall angle of drilled material.

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Manuscript ID.  0920
Paper No.  2022-SAT-P0501-P019
Long-Jeng Lee The Development of Ground-based scanning Hyperspectral Spectral Imager
Long-Jeng Lee, Taiwan Instrument Research Institute, National Applied Research Laboratories (Taiwan); Victor Hao, Isuzo Optics Corporation (Taiwan); Ming-Hsien Chou, HC Photonics Corporation, (Taiwan); Yuan Shen, National Chung Hsing University (Taiwan)

The hyperspectral imager was expensive in the market, but some of researches need to previous study and budget limited. In this article the lightweight pushbroom sacanning hyperspectral imager was below 150g, it spectral range of 400~1000nm, suitable for generally hyperspectral and fluorescence application. Here we use plastic grating film and lenses for the instrument to achieve a low lost, without high order sorting filter and lower consume of electric power, and easily and portably operated in the ground field .

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Manuscript ID.  0016
Paper No.  2022-SAT-P0501-P020
Ching-Yao Huang Simulation of Effective Power Change in Single Tilted Aspherical Lenses
Ching-Yao Huang, Da-Yeh University (Taiwan)

This study is to simulate the effective power distribution in the tilted aspherical prescription lenses at different tilt angles. The results show that the simulated effective power changes are in good agreement with the measured data, which verifies the correctness of the design approach and is suitable for the simulation of tilted lenses.

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Manuscript ID.  0393
Paper No.  2022-SAT-P0501-P022
Chao-Kang Liu Optical-Force Manipulation of Bessel Beam on Multiple Nanoparticles
Chun-Yi Yang, Yun-Cheng Ku, Chao-Kang Liu, Mao-Kuen Kuo, National Taiwan University (Taiwan); Jiunn-Woei Liaw, Chang Gung University (Taiwan), Ming Chi University of Technology (Taiwan)

The optomechanical behavior of multiple gold nanoparticles (GNPs) induced by a circularly polarized Bessel beam with orbital angular momentum (OAM) is studied. The trajectories of GNPs show that they are driven by Bessel beam to perform specific orbital motions. This is because that the OAM of the structured light is transferred to GNPs by the light absorption and scattering. The orbital radius of these GNPs depends on the wavelength and cone angle of Bessel beam. These rotating GNPs exhibit different stable patterns, depending on the number of GNPs and the initial conditions.

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Manuscript ID.  0305
Paper No.  2022-SAT-P0501-P023
Zhen-Xiang Zhao Electrically Controllable Linear Phase Retarder Composed By Two Liquid Crystal Variable Retarders
Zhen-Xiang Zhao, Chien-Yuan Han, National United University (Taiwan); Chih-Ching Ho, I-Hsuan Chen, Chih-Jen Yu, Chang Gung University (Taiwan)

This study presents an optical system equivalent to a linear phase retarder with arbitrary phase retardation and can be rotated by applying an electrical signal to two liquid crystal variable retarders. The optical system configuration is only composed of three polarization elements in a round-trip configuration. Moreover, this system can be employed as a variety of polarization elements having properties of linear anisotropy.

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Manuscript ID.  0802
Paper No.  2022-SAT-P0501-P024
Yi-Lun Su Analysis of the Efficiency of a Corrugated Light Guide for RGB Laser Diodes in LCOS
Yi-Lun Su, National Central University (Taiwan), National Applied Research Laboratories (Taiwan); Yu-Wei Sheu, Wen-Shing Sun, National Central University (Taiwan); Che-Chin Chen, National Applied Research Laboratories (Taiwan)

This paper studies how to select RGB laser diodes to ensure uniformity of the light source, first by adjusting the number of RGB laser diodes to produce the ideal white point chromaticity coordinates and second using a corrugated light pipe to achieve the resultant uniformity. Compared with a smooth light guide, a corrugated light guide can not only provide better uniformity, but also, for the same uniformity, be shorter in the length than the smooth light guide.

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Manuscript ID.  0759
Paper No.  2022-SAT-P0501-P025
Wei-Cheng Lin Optical Design of a Light Field Objective Lens for the Co-axial Illumination 3D Automated Optical Inspection
Wei-Cheng Lin, Po-Ming Lin, Yi-Lun Su, Chih-Hao Lin, Taiwan Instrument Research Institute (TIRI) (Taiwan)

This manuscript proposes the optical design of a light field objective lens with 4× magnification which can be adopted in the 3D automated optical inspection (AOI) by integrating co-axial illumination and an array of micro-lenses.

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Manuscript ID.  0823
Paper No.  2022-SAT-P0501-P026
Wei-che Wu Location Estimation of an Internal Point Heat Source in a Sample Based on Lock-in Thermography
Wei-che Wu, Po-you Wang, Te-yuan Chung, National Central University (Taiwan)

Lock-in thermography is a powerful non-destructive and non-contact detection technology for detecting the heat source of a sample. By measuring the temperature field on the surface of a sample, the position and depth of an internal point heat source can be estimated based on the amplitude and phase of the temperature field measured.

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Manuscript ID.  0479
Paper No.  2022-SAT-P0501-P027
Dong-li Shih Optical path design and simulation of MEMS LiDAR transceiver system
Kuan-Hung Li, Dong-li Shih, Chun-Nien Liu, Wood-Hi Cheng, National Chung Hsing University (Taiwan)

This article outlines the optical path design process of the transceiver system, designs the receiving and transmitting optical path system, and conducts simulations to derive the divergence angle and ray tracing diagram.

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Manuscript ID.  0348
Paper No.  2022-SAT-P0501-P028
Chia-Hao Liu Spin-orbit interaction of Bessel beam with a gold nanoparticle
Bing-Xian Chen, Yun-Cheng Ku, Chia-Hao Liu, Mao-Kuen Kuo, National Taiwan University (Taiwan); Jiunn-Woei Liaw, Chang Gung University (Taiwan), Ming Chi University of Technology (Taiwan)

We analyze the spin-orbit interaction of a Bessel beam interplaying with a gold nanoparticle (GNP); the structured light possesses spin angular momentum (SAM) and orbital angular momentum (OAM). When GNP is illuminated by Bessel beam, the spin and orbital rotations of GNP can be induced. The former is induced by the absorption of Bessel beam’s SAM by GNP, and the latter is caused by the transfer of OAM from Bessel beam into GNP. The rotation direction of the orbital motion of GNP, CCW or CW, depends on the sign of the order of Bessel beam.

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Manuscript ID.  0499
Paper No.  2022-SAT-P0501-P029
Tung-Chen Chao Study of Germicidal System Using UV LED and 3D Printing
Bo-Jun Huang, Hsi-Fu Shih, Tung-Chen Chao, National Chung Hsing University (Taiwan)

This research aims to design a shortwave ultraviolet (UV) sterilization system. Combined with innovative 3D printing, including reflector cup design, micro surface structure, physical steam deposition, optic simulation, and its modular application. UVC-LED germicidal light source to sterilize influenza virus The lethal dose of influenza virus radiation is 4000µm/cm^2 and the distance within 1 cm to 2 cm can achieve rapid sterilization effect.

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Manuscript ID.  0083
Paper No.  2022-SAT-P0501-P030
Kai-Hsiang Wang Optimization of Deformable Mirror Identification Using Multi-region Modeling
Kai-Hsiang Wang, Cheng-Jung Yang, Jui-Tse Yang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

In optical system, optical aberrations induced by optics imperfection, environment, and inhomogeneity in specimen would degrade the system performance. To build a real time adaptive optics system for aberration compensation, the fast responsive deformable mirror (DM) is adopted as the active compensator. However, the channels coupling in DM make the controller is difficult to design. In this paper, the control voltage vectors for DM to generate 15
orthogonal Zernike modes are successfully identified using multi-region modeling method. The generated Zernike modes are shown to have great linearity and are suitable for multichannel linear controller design in adaptive optics.

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Manuscript ID.  0362
Paper No.  2022-SAT-P0501-P031
Yu-Jie Xie Analyzing Positions Errors of Off-axis Optics when Assembling the KT90 CubeSat Telescope
Hsing-Yu Wu, National Chung-Shan Institute of Science and Technology (Taiwan), National Central University (Taiwan); Yu-Jie Xie, Sheng-Hui Chen, National Central University (Taiwan); Chih-Ying Huang, National Taipei University of Technology (Taiwan); Po-Hsuan Huang, Shih-Fang Liao, National Applied Research Laboratories (Taiwan)

The KT90 is a CubeSat camera project led by NSPO. During assembly, the alignment of the M3 off-axis asphere is challenging because its position is difficult to be evaluated. This paper proposed a modeling and predictive method to guide a relatively optimized M3 position.

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Manuscript ID.  0182
Paper No.  2022-SAT-P0501-P032
Yu-Teng Huang Observation of Noctiluca Scintillans Using Differential Interference Contrast Microscopy
Shyh-Tsong Lin, Che-Wei Kuo, Yang-Jun Lin, Yu-Teng Huang, National Taipei University of Technology (Taiwan)

In this research, a differential interference contrast microscope (DICM) was proposed to inspect dynamic images of Noctiluca scintillans. This paper demonstrates the configuration, inspection concept, experimental setup, and experimental results of the proposed DICM. The proposed DICM is based on the theory of shearing interferometry and algorithm of one-shot four–step phase-shifting technique. The experimental results agree the DICM’s capability of living Noctiluca scintillans.

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S5. Optical Design, Testing and Engineering

Poster Session II
Sunday, Dec. 4, 2022  09:00-11:00
Room: 3F TR-A318

Manuscript ID.  0383
Paper No.  2022-SUN-P0502-P001
Tzu-Chieh Hsiao Near-Room-Temperature Waste Heat Recovery through Radiative Cooling
Tzu-Chieh Hsiao, Sih-Wei Chang, Yen-Jen Chen, National Taiwan University (Taiwan); Dehui Wan, National Tsing Hua University (Taiwan); Hsuen-Li Chen, National Taiwan University (Taiwan)

Despite advances in thermoelectric power generation, near-room-temperature waste heat recovery remains challenging due to minor temperature differences. In order to recover heat waste efficiently, this work utilizes daytime radiative cooling in combination with thermoelectric technology. Further, a hierarchical micro-nano h-BN/ZnO composite (MNHZC), with an outstanding daytime radiative cooling ability and moderate thermal conductivity, is designed. It has high thermoelectric power generation levels and enhanced thermoelectric power. Due to the device's attractive energy generation capability, it has great potential for recycling low-grade waste heat and harvesting environmental energy.

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Manuscript ID.  0373
Paper No.  2022-SUN-P0502-P002
M. A. Arockiyadoss Robust and Cost-Effective Integration of Optical Communication and Sensor System
P. C. Peng, M. A. Arockiyadoss, Y. C. Manie, C. Y. Yen, L. Y. Du, E. M. Chang, National Taipei University of Technology (Taiwan)

We utilized a coarse wavelength division multiplexing technique over the integration of optical communication and fiber sensor systems. The optical communication and fiber sensor network combination is a cost-effective, flexible, simple structure, and better for both urban and rural areas. The experiment result proves that the proposed system achieves good performance to transmit both optical communication and sensing signals.

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Manuscript ID.  0788
Paper No.  2022-SUN-P0502-P003
Cheng-Fang Ho A Visible-band Aurora Imager for CubeSats
Cheng-Fang Ho, Taiwan Instrument Research Institute, National Applied Research Laboratories (Taiwan); Yu-Hsiu Liu, Tzu-Fang Chang, National Cheng Kung University (Taiwan); Chih-Lung Lin, Yu-Ting Lyu, Hsiu-An Tsai, Metal Industries Research & Development Centre (Taiwan)

The purpose of present study is to provide a design proposal for CubeSat scientific payload of auroral observation application. A visible band aurora imager is designed for capturing satellite-based dynamic auroral activity. According to the requirements of science and optical design, the aurora imager has a focal ration of F/1.6, a field of view of 14° × 7° and a spatial resolution of 1.5 km/pixel. The lens dimensions compact close to 1U for the requirements of CubeSat. The materials and structure of lens are considered for long-lived in the space environment and during launching.

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Manuscript ID.  0032
Paper No.  2022-SUN-P0502-P004
Jing-Yi Ye Eye Protection Effectiveness Comparison of Wearing Anti-blue Glasses and Using Candlelight OLED in Text Reading
Jing-Yi Ye, Yi-An Huang, Zhi-Qiao Liu, Shu-Guang Girls' Senior High School (Taiwan); Ching-Yu Weng, Ming-Chang Shih, National Tsing Hua University (Taiwan); Ming-Li Chou, Shu-Guang Girls' Senior High School (Taiwan); Jwo-Huei Jou, National Tsing Hua University (Taiwan)

Long exposure to blue enriched white light might damage eyes, which can be minimized by lowering the brightness and blue emission. There have been several approaches to reduce the potential blue hazards. We had investigated the eye protection effectiveness upon wearing anti-blue glasses under white light and using blue light-less candlelight OLED in text reading. We found that both approaches were effective with an eye protection index (EPI) of 16 for the former approach and 52 for the latter. The EPI can be enhanced from 16 to 50 as a color-conversion film was coupled under the white light desk lamp.

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Manuscript ID.  0041
Paper No.  2022-SUN-P0502-P005
Shih-An Wang Analysis of lens characteristics and lens manufacturing assembly tolerances on lens design and imaging quality
Shih-An Wang, Wen-Shing Sun, National Central University (Taiwan); Yi-Lun Su, National Central University (Taiwan), National Applied Research Laboratories (Taiwan)

Analyze lens refractive index, Abbe number and dispersion relationship, refractive index and temperature relationship, chemical properties, thermal properties, relative price, etc. Analysis of the imaging quality of the lens and the manufacturing and assembly tolerances of each lens.

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Manuscript ID.  0355
Paper No.  2022-SUN-P0502-P006
Chang-Xu Jiang Developing an intelligent automatic process to polish large-scale optics
Hsing-Yu Wu, National Chung-Shan Institute of Science & Technology (Taiwan), National Center University (Taiwan); Chang-Xu Jiang, National Taiwan Ocean University (Taiwan); Li-Jen Hsiao, National Chung-Shan Institute of Science & Technology (Taiwan); Yu-Shan Cheng, National Taiwan Ocean University (Taiwan); Sheng-Feng Lin, Po-Hsuan Huang, National Applied Research Laboratories (Taiwan); Guoyu Yu, National Center University (Taiwan), University of Huddersfield (UK); David Walker, University of Huddersfield (UK); Jin-Cherng Hsu, Fu Jen Catholic University (Taiwan)

Previous paper introduced the robotic arm equipped with a new tool to polish optics. In this paper, the technology focused on numerical modeling. Experimental measurements show a sweeping ‘W’ path over the workpiece and the results have been used for predicting the material removal of a linear tool path.

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Manuscript ID.  0849
Paper No.  2022-SUN-P0502-P007
Fang-Chi Lo Detecting free form lens morphology with non-contact optics
Fang-Chi Lo, Hsu-Cheng Hsu, National Cheng Kung University (Taiwan)

In this work, we use a non-contact optical and fast method to detect the surface topography of free-form lens and aspheric lens, we build up an interferometer by using penetrating/reflecting optical interferometric technology to detect the lens, and compare the simulation results with each other. It is hoped to achieve real-time detection and further develop a non-contact detection system for monitoring the quality of free-form lens.

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Manuscript ID.  0860
Paper No.  2022-SUN-P0502-P008
Jia-Xun Xie Achievement of the multiple emission colors by modification of electron-withdrawing functional groups with ppy-type Ir(III) complexes
Jia-Xun Xie, National Taiwan University of Science and Technology (Taiwan); Lin-Ming Huang, Tamkang University (Taiwan); Chih-Chien Lee, National Taiwan University of Science and Technology (Taiwan); Shun-Wei Liu, Ming Chi University of Technology (Taiwan); Chin-Hsin Chen, Tamkang University (Taiwan)

A simple molecular design strategy is proposed to provide three highly efficient Ir(III) phosphorescent emitters based on 2-phenylpyridine (ppy)-type ligands. The ppy ligands are modified with electron-withdrawing functional groups, resulting in tunable emission colors. As a result, we observed that our proposed device with electroluminescence emission wavelengths of the devices can determine in the range of 544 nm to 625 nm.

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Manuscript ID.  0009
Paper No.  2022-SUN-P0502-P009
Hsien-Feng Shao TIR Lens Design of LED Counter Beam Tunnel Lights for CIE Regulations
Hsien-Feng Shao, Hsing-Yuan Liao, Hsiao-Yi Lee, National Kaohsiung University of Sciences and Technology (Taiwan)

A new designed totally internal reflection (TIR) lens with 50W white light LED is proposed to serve as the counter beam light (CBL) for the road lighting in tunnels. By means of optics design software SPEOS to process the TIR lens optimization, it is demonstrated that the optimized LED light can act as a qualified CBL to accomplish CIE 88:2004 regulated tunnel lighting through LiteStar software.

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Manuscript ID.  0025
Paper No.  2022-SUN-P0502-P010
Yi-Lun Su The MIR Camera Lens with 3xOptical Zoom Design
Yi-Lun Su, National Applied Research Laboratories (Taiwan), National Central University (Taiwan); Che-Chin Chen, National Applied Research Laboratories (Taiwan); Wen-Shing Sun, National Central University (Taiwan); Wei-Cheng Lin, Feng-Yi Chen, Bo-Jen su, National Applied Research Laboratories (Taiwan)

Modern in the security, surveillance, and national defense markets, long-range infrared (IR) imaging plays an increasingly important role in monitoring, tracking, and targeting, the worldwide market for IR systems for commercial and dual-use security and surveillance applications are estimated to grow in the word.

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Manuscript ID.  0275
Paper No.  2022-SUN-P0502-P011
Yuan-Yao Lin Automation of surface profilometry and thermal imaging embedded in selective laser melting system
Yuan-Yao Lin, De-Wei Jiang, National Sun Yat-sen University (Taiwan); Kuo-Kuang Jen, Ying-Sheng Huang, Yi-Cherng Ferng, Chi-Ting Ku, National Chung-Shan Institute of Science and Technology (Taiwan)

A surface profilometry measurement system was built along with a co-axial scanning colorimetric thermal imaging system which were both integrated to a powder bed laser selective melting (SLM) system. The automation of the two systems that may achieve on-line profilometry and thermal imaging were designed and implemented. Basic electronic and optical test were conducted, showing precisely the designed electronic signal flow and preliminary results. Further experiments are planned to validate the automated profilometry and thermal imaging during the SLM fabrication.

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Manuscript ID.  0308
Paper No.  2022-SUN-P0502-P012
Ting-Yen Lin Simulation and Optimization of Color-Mixing Optical Component
Ching-Wei Yu, Yi-Jun Jen, National Taipei University of Technology (Taiwan); Ming-Chung Liu, Industrial Technology Research Institute (Taiwan); Ting-Yen Lin, National Taipei University of Technology (Taiwan); Hsiao-Wen Tu, Industrial Technology Research Institute (Taiwan)

This paper uses LightTools software as illumination simulation tools to design a light emitting diode (LED) lighting diffuser with various micro lens arrays. The optical model of refractive optical elements (ROE) for color homogeneity is built. The beam shapes of single and double sided micro lens arrays with circular and hexagonal lenslets are simulated and analyzed in the far field. The double sided micro lens arrays with non-periodic lenslets are employed as microstructures for the diffuser and optimized their placement. The paper provides the possibility of achieving color mixing for the design of a LED diffuser and general lighting.

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Manuscript ID.  0387
Paper No.  2022-SUN-P0502-P013
Jun-Yi Yu Object and Image Velocity Measurement and Calculation for Depth Cameras
Jun-Yi Yu, Wen-Shing Sun, National Central University (Taiwan); Chuen-Lin Tien, Feng Chia University (Taiwan); Shiang-Shiuan Tsai, Ching-Cherng Sun, National Central University (Taiwan)

In this paper, the Intel RealSense D455 depth camera is used to shoot six different object moving directions and calculate the average speed of the object and the image, and then use the measured average speed of the object and the calculated average speed of the object to calculate the amount of error between the two and analyze the cause of the error. The errors of the average speed of the final six experiments are all less than 6%。

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Manuscript ID.  0782
Paper No.  2022-SUN-P0502-P014
Tzu-Li Tseng Drip Infusion Cloud Warning Device
Tzu-Li Tseng, Cheng-Han LI, National Kaohsiung University of Sciences and Technology (Taiwan); Ming-Hsien Wei, Ren-Ji Huang, Kaohsiung Municipal Kaohsiung Industrial High School (Taiwan); Wei-Hsiung Tseng, National Kaohsiung University of Sciences and Technology (Taiwan); Hsin-Yi Ma, Minghsin University of Science and Technology (Taiwan); Hsiao-Yi Lee, National Kaohsiung University of Sciences and Technology (Taiwan)

Intravenous injection is a common demand in hospitals. In recent years, the clinical care work of medical staff becomes more and more burdensome. This work is connected with Wi-Fi, remote monitoring platform and cloud database to reduce the workload of nurses and their families. Nurses and their families can know for the first time that the drip in the infusion kit titration room has been completed, thus reducing the burden on the medical staff. At the end of intravenous injection, the needle was removed immediately to reduce discomfort and damage to the intravenous injection site.

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Manuscript ID.  0225
Paper No.  2022-SUN-P0502-P015
Chang-Che Chiu Optical optimization design of disposable capsule endoscope
Chang-Che Chiu, Wen-Tsung Ho, Zhi Ting Ye, National Chung Cheng University (Taiwan)

In this study, a low f-number, wide-angle capsule endoscope lens based on an aspheric lens is proposed, which has a field of view (FOV) of 130°, an F-number of 2.0, and a modulation transfer function(MTF) of more than 0.3 at a spatial frequency of 178 lp/mm, and the optical distortion ≦ 30%. To sum up, the proposed lens system can obtain excellent image quality.

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Manuscript ID.  0077
Paper No.  2022-SUN-P0502-P016
Huy Xuan Nguyen Enhancement of a single-axis laser material processing system by using two galvanometers scanner to improve the telecentric errors
Huy Xuan Nguyen, National Kaohsiung University of Science and Technology (Taiwan), Nha Trang University (Viet Nam); Hien Thanh Le, Dong Nai Technology University (Viet Nam); Yi Hsiao Lee, National Kaohsiung University of Science and Technology (Taiwan)

In this work, a single-axis galvanometer scanner using two galvanometers is proposed as a new approach to laser micromachining technology. The additional second galvanometer is used to manipulate the output laser beam of the first galvanometer to enhance the telecentric error correction and improve the beam quality to meet international standard ISO 11145:2018.

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Manuscript ID.  0740
Paper No.  2022-SUN-P0502-P017
Ting-Chien Chen Obstacle Avoidance of Field Tracked Vehicles via Deep Deterministic Policy Gradient with Model Predictive Control
Yu-Cheng Sung, Ting-Chien Chen, Chia-Wei Hsu, Chun-Ting Sung, Shean-Jen Chen, College of Photonics (Taiwan)

To keep the unmanned ground vehicle (UGV) following the predetermined path in specific agricultural field environment and coping with the uncertainty of the surroundings, path following and obstacle avoidance are the capabilities that is needed. In this study, we combine model predictive control with deep deterministic policy gradient to ensure UGV tracking on the reference path, meanwhile achieved collision avoidance by generating a new local path through several previous deep reinforcement training when observing the obstacle during the dynamic process.

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Manuscript ID.  0497
Paper No.  2022-SUN-P0502-P018
Sheng-Yuan Zhang Gait Training Rehabilitation System Based on Depth Measuring
Shi-Chu Wu, Lian-Wang Lee, Hsi-Fu Shih, Sheng-Yuan Zhang, National Chung Hsing University (Taiwan)

This research combined a depth measuring sensor Kinect v2 with a pneumatic muscle body-weight support system to reduce the rehabilitation system cost. The Kinect v2 was adopted for capturing the coordinates of human bodies, and required gait parameters after calculated. Then, a training method that required participants to project their footprints was proposed. To verify the reality and functionally of the system, the effects of gaits under natural walking, footprint guidance, and body-weight support system on gait with or without feedback control were compared. The results demonstrated that the system could provide better stability and symmetry of gaits for participants.

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Manuscript ID.  0430
Paper No.  2022-SUN-P0502-P019
Ying-Nan Lieu Deep-via on Crystalline Quartz by Double-side Anisotropic Wet Etching
Ying-Nan Lieu, Chih-Ming Wang, National Central University (Taiwan)

Quartz has many remarkable characteristics such as piezoelectricity nature, high frequency. Quartz has been used in micro-sensors and MEMS applications, Comparing dry and wet etching techniques of quartz, the cost of dry etching has more preferable profile control but is much more expensive than the wet etching. To fabricate the structures, chromium and gold thin film is evaporated on the AT-CUT quartz substrate and patterned as etching masks. The sample is then etched in ammonium fluoride solution of saturated concentration and BOE solution at 45℃ respectively. The etched profiles are observed using SEM to establish etching rate in AT-cut quartz.

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Manuscript ID.  0030
Paper No.  2022-SUN-P0502-P020
Feng-Rong Chen Effect of Reading-light Color on Heartbeat after Dusk
Ma-Han Yen, I-Shain Weng, Yu-Wei Chang, Shu-Guang Girls' Senior High School (Taiwan); Ya-Chen Hsieh, Feng-Rong Chen, Yi-Siang Wang, National Tsing Hua University (Taiwan); Ming-Li Chou, Shu-Guang Girls' Senior High School (Taiwan); Jwo-Huei Jou, National Tsing Hua University (Taiwan)

Heartbeat varies throughout the day, which is strongly affected by the ambient light. After dusk, it should slow down gradually and significantly, provided there is no artificial light interference. However, reading at night has almost become a routine for students. Little was known about the effect of lighting with or without blue emission on heartbeat after dusk. We had hence performed a preliminary study to investigate the same and found that the heartbeat could be reduced by 20% from 6 to 9 p.m. as a blue light-less candlelight OLED was used, while only 10% under a white light.

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Manuscript ID.  0029
Paper No.  2022-SUN-P0502-P021
Chia-Sheng Huang Effect of Board-color on Viewing Clarity
Yu-Hsin Lin, Chih-Hsuan Chen, Shih-Ya Chao, Shu-Guang Girls' Senior High School, (Taiwan); Chia-Sheng Huang, Kuo-Hsien Chou, National Tsing Hua University (Taiwan); Ming-Li Chou, Shu-Guang Girls' Senior High School, (Taiwan); Jwo-Huei Jou, National Tsing Hua University (Taiwan)

Black-board is a typical teaching aid facilitating lessons giving in schools. Viewing clarity should however be ensured always, otherwise eye fatigue might easily occur. Black-board with a green color was thought to be more friendly than the typical ‘black’-board. We found that ‘black’-board had actually provided better viewing clarity. Taking subjects sitting at 9m away for example, recognizable font-size was 49pt for black-board, while 75pt for green-board under a 240 lx reaching-eye illuminance, showing the ‘black’-board to have a 53% better viewing clarity.

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Manuscript ID.  0701
Paper No.  2022-SUN-P0502-P022
Yu-Hsing Lin Modeling of Slot Antenna Arrays fed by Microstrip-line with Liquid Crystal Phase Shifter by FDTD Method
Yu-Hsing Lin, Yi-Chien Lin, Shih-Hui Chang, National Cheng Kung University (Taiwan)

In this study, we discuss the slot antenna array fed by microstrip-line with liquid crystal phase shifter operating at 60GHz. We observed the far-field radiation beam can be swept for 11 degrees and can be further increased by using the meander delay line.

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Manuscript ID.  0345
Paper No.  2022-SUN-P0502-P023
M. A. Tefera Using Deep Learning method and Fabry-Perot Filter in Fiber Bragg Grating Sensor Systems
P. C. Peng, M. A. Tefera, Y. C. Manie, S. H. Liu, T. P. Fan, L. Y. Du, National Taipei University of Technology (Taiwan)

In order to reduce the risks and accidents in life, the development of sensors is extremely important. Compared with traditional electronic sensors, fiber-optic sensing is relatively small in size and has high accuracy. In this paper, Fiber Bragg Grating (FBG) sensor based on the Fabry-Perot (FP) Filter technique is proposed and experimentally demonstrated, which increases the feasibility and is highly efficient in the optical system. Moreover, a deep learning technique is proposed to increase the correctness of estimating the sensing signal of the FBG sensor system.

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Manuscript ID.  0028
Paper No.  2022-SUN-P0502-P024
Tun-Hao Chen Eye-protection Effectiveness of Photochromic Lenses
Ruei-Sin Chang, yun an Jin, Yen Chia Peng, Shu-Guang Girls' Senior High School (Taiwan); Jie-Yun Lin, Tun-Hao Chen, National Tsing Hua University (Taiwan); Po-Ting Yeh, National Taiwan University Hospital (Taiwan); Ming-Li Chou, Shu-Guang Girls' Senior High School (Taiwan); Yun-Jei Chen, Tsai Lin Glasses Co. (Taiwan); Jwo-Huei Jou, National Tsing Hua University (Taiwan)

Bright sunlight might damage eyes. Long exposure to blue light enriched backlight of 3C products might also impose threats. To protect, wearing photochromic lens has become an option. However, none had been reported about their eye protection effectiveness (EPI). We had found that the EPIs ranged between 2 to 6 for a series of photochromic lenses upon exposing to a 17,000lx daylight. They showed no protection effectiveness, indoors, in filtering the screen blue light. In contrast, an orange lens counterpart showed a 30 EPI under the same daylight and a 27 EPI in computer blue light screening.

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Manuscript ID.  0668
Paper No.  2022-SUN-P0502-P025
Chun-Ling Yen Electrically Tunable Bi-Layer Twisted Nematic Liquid Crystal THz Wave Plates with Intermediate Polymer Thin Film
Chun-Ling Yen, National Applied Research Laboratories Taiwan Instrument Research Institute (Taiwan)

We demonstrate electrically tunable twisted nematic (TN) aligned liquid crystal (LC) Terahertz Quarter-Wave Plate (THz-QWP) and Full-Wave Plate (FWP) with a novel structure, in which a single LC composite polymer thin film is inserted in the middle of the LC cell. Using this design, the phase shift has been increased by 14.3° at 1.2 THz in comparison to the conventional design (98.1°). The threshold voltage has been lowered from 0.81V to 0.48V while the driving voltage for QWP operation has been reduced from 8.4V to 6.3V at 1.2 THz.

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Manuscript ID.  0421
Paper No.  2022-SUN-P0502-P026
Shi-Jie Chen The Algorithm for Modeling the Optical Spectra from Photo Detectors for Special Applications
Henglong Yang, Wei-Ting Tseng, Shi-Jie Chen, Yi-Yang Tsai, National Taipei University of Technology (Taipei Tech) (Taiwan)

A practical algorithm based on numerical analysis technique was proposed for modeling the optical spectra with heavy noises from photo detectors to extract useful information. Our preliminary result indicated that the exact timing as the light-emitting device initially turned on can be mathematically determined from our algorithm.

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Manuscript ID.  0055
Paper No.  2022-SUN-P0502-P027
Yi-Ping Huang Study of Highly Efficient Photocatalytic Mobile Air Purifier to remove formaldehyde by using Array of Ultraviolet Light Emitting Guides
Yi-Ping Huang, Hsing-Yuan Liao, Hsiao-Yi Lee, National Kaohsiung University of Science and Technology (Taiwan)

According to the consumer market demand for air purification, let us know that there is an urgent need for the miniaturization of the Photocatalytic air purification system in the current market. Therefore, we have designed and developed a set of miniature Photocatalytic modules, which are not only small in size but can be used in series. Furthermore, it can evenly irradiate the spherical particles coated with titanium dioxide, and efficiently filter formaldehyde in the air through the Photocatalytic reaction.

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Manuscript ID.  0791
Paper No.  2022-SUN-P0502-P028
Chun Wei Leu Ocular Optical System with Long Eye Relief
Chun Wei Leu, Jorjin Technologies Inc. (Taiwan)

In order to meet the long eye relief requirement of ocular optical system, a type of eyepieces with long exit pupil distance were designed. The system parameters of the eyepieces designed for 0.5 inch OLED micro display were under the premise that the diameter of 8 mm exit pupil, 32 mm exit pupil distance, the focal length 23.89 mm and 30° field of view (FOV) was realized. The results show that MTF of eyepieces are higher than 0.3 for all fields of view at the frequency of 35lp/mm and the distortion of all fields are low than 0.5%.

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Manuscript ID.  0084
Paper No.  2022-SUN-P0502-P029
Xiang Ting Lin Real-time Group Delay Dispersion Compensation by Linear Deformable Mirror
Xiang Ting Lin, Shu-Yu Chang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

The group delay dispersion (GDD) would disturb the pulse width of the ultrafast laser and affects the laser power concentration. The GDD induced in optical system might vary dynamically when the temperature or optics are changed. In order to compensate the dynamic dispersion change. A linear deformable mirror-based pulse compressor is developed to compensate the dispersion in real time. With the FPGA-based digital PI (proportional-integral) controller, the GDD compensation can be improved to 100 Hz control loop and the GDD can be converged in 5 time steps.

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Manuscript ID.  0402
Paper No.  2022-SUN-P0502-P030
Wen-Sheng Hsiao Application of light system to soil sterilization and research
Wen-Sheng Hsiao, Hsiao-Yi Lee, National Kaohsiung University of Science and Technology (Taiwan); Chih-Lin Tseng, Cheng Shiu University (Taiwan); Wei-Hsiung Tseng, Air Force Institute of Technology (Taiwan)

The study used special lamps with different structures to generate concentrated light patterns of LED lamps of different wavelengths to disinfect the soil. Moreover, the simplification of the sterilization framework in the past is environmentally friendly and efficient, which is conducive to farmers' large-scale commercial purchase and use.

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Manuscript ID.  0861
Paper No.  2022-SUN-P0502-P031
Wei-Lun Syu Multiple-resonant thermally activated delayed fluorescence-based organic light-emitting diodes with exciplex co-hosts
Wei-Lun Syu, Chih-Chien Lee, National Taiwan University of Science and Technology (Taiwan); Shun-Wei Liu, Ming Chi University of Technology (Taiwan)

Multiple-resonance thermally activated delayed fluorescence (MR-TADF) emitters have several advantages, such as high quantum yields, narrow emission profiles, and deep blue emission. We optimized the electroluminescence performance of the MR-TADF emitter by using an exciplex co-host emissive layer configuration. As a result, the optimal device can achieve a maximum external quantum efficiency (EQE) of 20.60 % and a luminance of ~ 10370 cd m-2 at 8V.

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Manuscript ID.  0933
Paper No.  2022-SUN-P0502-P032
Mei-Lin Chen Design and Demonstration of K-mark LED Headlamp with Extreme-High Contrast
Mei-Lin Chen, Kun-Han Yu, Chi-Shou Wu, Shih-Kang Lin, Tsung-Hsun Yang, Yeh-Wei Yu, Ching-Cherng Sun, National Central University (Taiwan)

By designing the light pattern into three obvious bright spots and reduce the connection area between the reflector segments, the designed headlamp can meet K-mark regulation with an extreme-high contrast.By designing the light pattern into three obvious bright spots and reduce the connection area between the reflector segments, the designed headlamp can meet K-mark regulation with an extreme-high contrast.

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