Mar. 2021

Article Contents

Chinese Optics> 2021> 14(2): 390-396.

WANG Wei, LU Lin, ZHANG Tian-yi, WANG Wei-lu, LIU Yi-chen, MENG Qing-yu, XU Shu-yan. A 10−9-order point source transmission test facility[J]. Chinese Optics, 2021, 14(2): 390-396. doi: 10.37188/CO.2020-0050

Citation:

WANG Wei, LU Lin, ZHANG Tian-yi, WANG Wei-lu, LIU Yi-chen, MENG Qing-yu, XU Shu-yan. A 10⁻⁹-order point source transmission test facility[J].Chinese Optics, 2021, 14(2): 390-396.doi:10.37188/CO.2020-0050

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A 10⁻⁹-order point source transmission test facility

doi:10.37188/CO.2020-0050

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China

Funds:Supported by Youth Innovation Promotion Association, CAS (No. 2019219); National Natural Science Foundation of China (NSFC) (No. 61705220)

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Corresponding author:wangwei123@ciomp.ac.cn
Received Date:30 Mar 2020
Rev Recd Date:06 May 2020

Available Online:07 Sep 2020

Publish Date:23 Mar 2021

Abstract

Abstract

In order to achieve the quantitative evaluation of the stray light attenuation in optical systems, we demonstrated a point source transmission test facility with 10 ⁻⁹-order sensitivity in this paper. We employed a pulsed source and measured the pulse to obtain the weak signal at the image plane, as well as to simplify the detection system. Using this scheme, we constructed a test facility with a maximum aperture of 600 mm and a test wavelength of 527 nm, and conducted the test with a 250 mm aperture optical system. Experimental results showed that the point transmission at a 60-degree incident angle is 1.68×10 ⁻⁹. The results prove that the test error of this facility is in the order of 10 ⁻⁹or below, and the test facility has the ability to test 10 ⁻⁹-order point source transmissions. This technology can provide quantitative evaluation for various optical systems with strict stray light requirements, like astronomical telescopes, star sensors and spaced target monitor payloads.
- point source transmission,
- stray light test,
- weak signal detection

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References (15)

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