The influence of contaminated mirror on the flux distributions of stray radiation of infrared telescope systems

Pan He; Jing Xiao; Bin Zhang; Xiuwen Yao

doi:10.1117/12.867620

13 October 2010 The influence of contaminated mirror on the flux distributions of stray radiation of infrared telescope systems

Pan He, Jing Xiao, Bin Zhang, Xiuwen Yao

Author Affiliations +

Proceedings Volume 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 76540T (2010) https://doi.org/10.1117/12.867620
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

The existence of contaminated mirror in infrared telescope system not only reduces the contrast between objects and background, but also leads to the nonuniformity of the flux distribution of stray radiation on detector, resulting in great difficulty in obtaining and analyzing the target signal. In this paper, taking Cassegrain telescope as a typical example and using the optical analysis software, i.e., ASAP, the three-dimensional simulation model has also been built up. The self-generated thermal radiation flux and the flux distributions of stray radiation on the image plane have been simulated when the primary mirror under two cases, i.e., clean and local area contaminated. The influence of the size and position of the contaminated area on the uniformity of the flux distributions of stray radiation has been focused on discussion. The radiation flux and the flux distributions of stray radiation have been employed to evaluate the stray radiation performance of the system. The results indicate that the local area contamination on mirrors could change the uniformity of the flux distributions on the image plane and also degrade the stray radiation performance of the system, resulting in the influence on the detection and identification of the target. Consequently, it is of critical importance to keep the surface of optical elements clean, especially to avoid local area contamination on optics.

Citation Download Citation

Pan He, Jing Xiao, Bin Zhang, and Xiuwen Yao "The influence of contaminated mirror on the flux distributions of stray radiation of infrared telescope systems", Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 76540T (13 October 2010); https://doi.org/10.1117/12.867620

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Contamination

Mirrors

Sensors

Infrared telescopes

Scattering

Device simulation

3D modeling

Show All Keywords

Keywords/Phrases

Search In:

Publication Years