Reducing Optical Noise

Clifford J. Chocol; Jack F. Wade

doi:10.1117/12.964606

26 September 1977 Reducing Optical Noise

Clifford J. Chocol, Jack F. Wade

Proceedings Volume 0107, Stray Light Problems in Optical Systems; (1977) https://doi.org/10.1117/12.964606
Event: 1977 SPIE/SPSE Technical Symposium East, 1977, Reston, United States

Abstract

Light suppression in optical instruments has improved significantly in the last several years. These improvements can be attributed directly to three previous developments: optical computer programs, low reflecting surfaces and more efficient baffle edges. In 1968 a new electro-chemical process was developed, which with subsequent refinement, exhibited a reflectance of about 0.57 over the visible (Figure 1) and infrared spectrum (8-14 μm). Several years later a method was devised to fabricate baffle edges which when subjected to the electro-chemical process, produced edges 8 to 10 times more efficient (Figure 2) than the previous state-of-the-art. With refinement in the computer programs and experimentally obtained data on surfaces and edges, light shades were designed and tested which exhibited an improvement over previous light shades by an order of magnitude. This combination of computer program and physical properties improvements has enabled us to improve instruments performance significantly by reducing the largest source of noise, i.e., stray light.

Citation Download Citation

Clifford J. Chocol and Jack F. Wade "Reducing Optical Noise", Proc. SPIE 0107, Stray Light Problems in Optical Systems, (26 September 1977); https://doi.org/10.1117/12.964606

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