UNCOOLED INFRARED POLARIZATION DETECTION PIXEL STRUCTURE, CHIP, AND DETECTOR

WIPO Patent Application WO/2023/070749

A1

An uncooled infrared polarization detection pixel structure, a chip, and a detector. By setting a light-passing region of a grating layer to a regular polygon corresponding to a polarization direction, it can be ensured that gratings (111) in the light-passing region that correspond to different polarization directions have the same shape except for the different polarization directions, thereby ensuring that the grating layer has the same transmission efficiency for incident light of multiple preset polarization directions. By setting a pixel layer to a regular polygon corresponding to a light-transmissive region, and providing absorption units (8) on the surface of the pixel unit, the influence of a polarization-selective absorption characteristic caused by an electrode (71) in the pixel layer can be eliminated, so that the light absorption of infrared detection pixels is insensitive to polarization, thereby ensuring that the response of the pixel layer to light in different polarization directions is consistent, and avoiding the problem of response non-uniformity.

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LIU TIANDE (CN)
DONG SHAN (CN)
GAN XIANFENG (CN)
WANG PENG (CN)
CHEN WENLI (CN)
WANG HONGCHEN (CN)

PCT/CN2021/130028

May 04, 2023

November 11, 2021

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YANTAI RAYTRON TECH CO LTD (CN)

G01J5/08; G01J5/48; G01J5/20

CN109309140A	2019-02-05
CN111896122A	2020-11-06
CN110095185A	2019-08-06
CN111947789A	2020-11-17
CN113036444A	2021-06-25
US20110266441A1	2011-11-03

UNITALEN ATTORNEYS AT LAW (CN)

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