公开(公告)号：US10274376B2

公开(公告)日：2019-04-30

申请号：US15968758

申请日：2018-05-02

Applicant: University of Electronic Science and Technology of China

Inventor： Ziji Liu ,  Shengchen Zhao ,  Zhiqing Liang ,  Hongbo Zhang ,  Tao Wang ,  Yadong Jiang

IPC: G01J5/52 ,  G01J5/10 ,  G01R31/265 ,  G01J5/00

Abstract: A system for testing thermal response time of an uncooled infrared focal plane detector array and a method therefor is provided. The system comprises: a blackbody, a chopper, a detector unit under test and a testing system. The method comprises: emitting radiation by the blackbody, chopping by the chopper, then radiating the radiation to the uncooled infrared focal plane detector array under test; generating different responses on the radiation at different chopping frequencies by the uncooled infrared focal plane detector array under test; collecting different response values of the uncooled infrared focal plane detector array under test at different chopping frequencies; obtaining response amplitude at a corresponding frequency in a frequency domain by FFT; fitting according to a formula Rv ⁡ ( f ) = Rv ⁡ ( 0 ) 1 + ( 2 ⁢ π ⁢ ⁢ f ⁢ ⁢ τ ) 2 to obtain the thermal response time.

公开(公告)号：US20170285353A1

公开(公告)日：2017-10-05

申请号：US15625429

申请日：2017-06-16

Applicant: University of Electronic Science and Technology of China

Inventor： Ziji Liu ,  Xuan He ,  Xing Xiong ,  Zhiqing Liang ,  Yadong Jiang

IPC: G02B27/10 ,  G02B3/00 ,  G01N21/25 ,  G02B5/20

CPC classification number: G02B27/1013 ,  G01J3/00 ,  G01N21/255 ,  G01N21/31 ,  G01N2021/3155 ,  G01N2201/0627 ,  G02B3/0056 ,  G02B5/201

Abstract: A light splitting module for obtaining spectrums of an object to be tested is disclosed, which sequentially includes a light entrance window, a diffuser and a filter array along a light entrance direction, wherein the filter array is an angle modulated filter array which has multiple subareas and includes multiple filters with different center wavelengths respectively corresponding to the subareas. Also, a dual-mode multiplexing optical device is disclosed, which includes the light splitting module, an illumination module and a light field imaging module, can realize the integration of spectral detection and light field imaging, so it can be applied to material spectral detection, digital image detection and digital focusing for obtaining high-resolution imaging results; and simultaneously, the modules of the device are detachable, so that users can use the device as required.

公开(公告)号：US20180252590A1

公开(公告)日：2018-09-06

申请号：US15968758

申请日：2018-05-02

Applicant: University of Electronic Science and Technology of China

Inventor： Ziji Liu ,  Shengchen Zhao ,  Zhiqing Liang ,  Hongbo Zhang ,  Tao Wang ,  Yadong Jiang

IPC: G01J5/52 ,  G01J5/10

CPC classification number: G01J5/522 ,  G01J5/10 ,  G01J2005/0048 ,  G01R31/2656

Abstract: A system for testing thermal response time of an uncooled infrared focal plane detector array and a method therefor is provided. The system comprises: a blackbody, a chopper, a detector unit under test and a testing system. The method comprises: emitting radiation by the blackbody, chopping by the chopper, then radiating the radiation to the uncooled infrared focal plane detector array under test; generating different responses on the radiation at different chopping frequencies by the uncooled infrared focal plane detector array under test; collecting different response values of the uncooled infrared focal plane detector array under test at different chopping frequencies; obtaining response amplitude at a corresponding frequency in a frequency domain by FFT; fitting according to a formula Rv  ( f ) = Rv  ( 0 ) 1 + ( 2  π   f   τ ) 2 to obtain the thermal response time.

公开(公告)号：US09869868B2

公开(公告)日：2018-01-16

申请号：US15625429

申请日：2017-06-16

Applicant: University of Electronic Science and Technology of China

Inventor： Ziji Liu ,  Xuan He ,  Xing Xiong ,  Zhiqing Liang ,  Yadong Jiang

IPC: G01N21/25 ,  G02B27/10 ,  G02B5/20 ,  G02B3/00

CPC classification number: G02B27/1013 ,  G01J3/00 ,  G01N21/255 ,  G01N21/31 ,  G01N2021/3155 ,  G01N2201/0627 ,  G02B3/0056 ,  G02B5/201

Abstract: A light splitting module for obtaining spectrums of an object to be tested is disclosed, which sequentially includes a light entrance window, a diffuser and a filter array along a light entrance direction, wherein the filter array is an angle modulated filter array which has multiple subareas and includes multiple filters with different center wavelengths respectively corresponding to the subareas. Also, a dual-mode multiplexing optical device is disclosed, which includes the light splitting module, an illumination module and a light field imaging module, can realize the integration of spectral detection and light field imaging, so it can be applied to material spectral detection, digital image detection and digital focusing for obtaining high-resolution imaging results; and simultaneously, the modules of the device are detachable, so that users can use the device as required.