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Proceedings Paper

A Simple Model Of Flare Light In Microdensitometers
Author(s): Joseph M. Geary
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Paper 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.

Paper Details

Date Published: 26 September 1977
PDF: 4 pages
Proc. SPIE 0107, Stray Light Problems in Optical Systems, (26 September 1977); doi: 10.1117/12.964605
Show Author Affiliations
Joseph M. Geary, Bureau of Radiological Health (United States)

Published in SPIE Proceedings Vol. 0107:
Stray Light Problems in Optical Systems
John D. Lytle; Howard E. Morrow, Editor(s)

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