Dr. Shuyu Lei Profile

Dr. Shuyu Lei

at North GuangWei Technology Inc

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Proceedings Article | 8 June 2015 Paper

Uncooled infrared focal plane array imaging in China

Shuyu Lei

Proceedings Volume 9451, 945119 (2015) https://doi.org/10.1117/12.2176032

KEYWORDS: Sensors, Microbolometers, Infrared radiation, Staring arrays, Thermography, Bolometers, Infrared imaging, Imaging arrays, Temperature metrology, Infrared sensors

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This article reviews the development of uncooled infrared focal plane array (UIFPA) imaging in China in the past decade. Sensors based on optical or electrical read-out mechanism were developed but the latter dominates the market. In resistive bolometers, VOx and amorphous silicon are still the two major thermal-sensing materials. The specifications of the IRFPA made by different manufactures were collected and compared. Currently more than five Chinese companies and institutions design and fabricate uncooled infrared focal plane array. Some devices have sensitivity as high as 30 mK; the largest array for commercial products is 640×512 and the smallest pixel size is 17 μm. Emphasis is given on the pixel MEMS design, ROIC design, fabrication, and packaging of the IRFPA manufactured by GWIC, especially on design for high sensitivities, low noise, better uniformity and linearity, better stabilization for whole working temperature range, full-digital design, etc.

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