Guerap II - A Computer Program For The Analysis Of The Stray Radiation Rejection Capabilities Of Optical Systems

Bruce M. Boyce

doi:10.1117/12.964598

26 September 1977 Guerap II - A Computer Program For The Analysis Of The Stray Radiation Rejection Capabilities Of Optical Systems

Bruce M. Boyce

Author Affiliations +

Proceedings Volume 0107, Stray Light Problems in Optical Systems; (1977) https://doi.org/10.1117/12.964598
Event: 1977 SPIE/SPSE Technical Symposium East, 1977, Reston, United States

Abstract

This paper presents the theory of operation and the operating characteristics of the GUERAP II computer program. In this program, a deterministic approach to the computation of the stray radiation terms is taken, rather than a statistical approach. Thus, each of the stray radiation terms arising from the phenomena of diffuse scattering from surfaces and diffraction occurring from edges is computed in a deterministic rigorous fashion. The program utilizes a generalized differential ray trace routine, which permits the tracing of rays through an optical system along with a measure of the ray weight, as determined by the area of the ray. The program also utilizes a scalar diffraction theory that permits the description of diffraction by the use of rays originating from edges. This method allows the rigorous handling of multiple diffraction sequences, such as those that occur in systems that utilize a Lyot stop for stray radiation reduction. The paper will contain a discussion of the overall structure and use of GUERAP II, and a description of the diffraction calculation methodology.

Citation Download Citation

Bruce M. Boyce "Guerap II - A Computer Program For The Analysis Of The Stray Radiation Rejection Capabilities Of Optical Systems", Proc. SPIE 0107, Stray Light Problems in Optical Systems, (26 September 1977); https://doi.org/10.1117/12.964598

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