Mr. Leben Kuo Profile

Leben Kuo

at MORRISON Opto-Electronics

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Proceedings Article | 9 September 2019 Presentation + Paper

Design, manufacture, and verification of bandpass filter for multispectral remote sensing in micro-satellite

Ching-Wei Chen, Chia-Ray Chen, Leben Kuo, Chien-Fu Huang, David Wang

Proceedings Volume 11116, 111160B (2019) https://doi.org/10.1117/12.2530536

KEYWORDS: Optical filters, Transmittance, Remote sensing, Thin films, Visible radiation, Lithography, Design for manufacturability, Bandpass filters, Space operations, Environmental sensing

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National Space Organization (NSPO) has actively promoted local space industry and tried a promising approach for the new remote sensing satellite mission in the upcoming 10 years space program. NSPO executes a Micro-satellites program which promote the cooperation with domestic academia and industry to develop the space components, subsystems, system, and forming space industry in Taiwan. Most of the satellite key components will be designed and made in Taiwan. That will be the first space program in Taiwan aiming to the promotion of space industry locally. Development of a high quality proto-type multi-spectral filter is reported in this paper. This optical filter will be installed in front of CMOS image sensor to record multi-spectral images of the earth surface. The optical spectral design composes of five band-pass filters on single substrate, including three bands in visible range, one panchromatic band including whole visible spectrum and one band in near infrared. MORRISON Opto-Electronics (MOE) Ltd is responsible for spectral design and multi-layer thin film deposition. The optical filter has been implemented optical spectrum measurement and cross cut adhesion test. The environmental test, including high temperature and humidity, thermal cycling, and radiation tests are also performed to verify the validation of this device. A positive result shows that thin film structure and optical transmittance are acceptable and qualified for the space applications. According to the proto-type development experience, the fabrication of a space qualified multi-spectral filter which could fulfil the requirement for Micro-satellites mission is expected in near future.

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