A Simple Model Of Flare Light In Microdensitometers

Joseph M. Geary

doi:10.1117/12.964605

26 September 1977 A Simple Model Of Flare Light In Microdensitometers

Joseph M. Geary

Proceedings Volume 0107, Stray Light Problems in Optical Systems; (1977) https://doi.org/10.1117/12.964605
Event: 1977 SPIE/SPSE Technical Symposium East, 1977, Reston, United States

Abstract

This presentation suggests a model for flare in microdensitometers based on scattering at the air-glass interfaces of the instrument resulting in several quasi-lambertian sources directly in the sensor optical train. It is further shown that a sample trace is not only a convolution of the target with the projected sensor aperture but, to some extent, a convolution of the target with the irradiated area in the sample plane as well. Based on this analysis, it is suggested that flare can be corrected for provided its magnitude is held consant. This requires that, during a full scan, the target always remains effectively within the irradiated area. This presentation is extracted from a substantially larger paper to appear in "Optical Engineering" at a later date this year.

Citation Download Citation

Joseph M. Geary "A Simple Model Of Flare Light In Microdensitometers", Proc. SPIE 0107, Stray Light Problems in Optical Systems, (26 September 1977); https://doi.org/10.1117/12.964605

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