Table of Contents
Advances in Optical Technologies
Volume 2012, Article ID 485212, 4 pages
http://dx.doi.org/10.1155/2012/485212
Research Article

Study of Factors Making Space-Contaminated Optical System Unusable

1Department of Physics, Harbin Institute of Technology, Harbin 150001, China
2School of Astronautics, Harbin Institute of Technology, Harbin 150001, China

Received 4 April 2012; Revised 8 July 2012; Accepted 5 August 2012

Academic Editor: Zoran Ikonic

Copyright © 2012 Dakun Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Molecular and particulate contamination of space optical surfaces can be extremely detrimental to optical system performance. In order to determine whether optical system is unusable, we must do a lot of tests. For reducing experimental effort, computational criterion for unusable space optical system is put forward, which is based on experimentation and calculation by 2D-FDTD (finite-difference time domain). And then factors making optical system unusable are studied when distribution of light intensity is consistent with the criterion. Results show that small particulate is more detrimental to optical system than big one for particle with high permittivity is. The distribution of particles making optical system unusable is also obtained.