Session Index

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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