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Proceedings Paper

Industrial & Military Applications Of Optical Systems
Author(s): Jagdish T. Madhav
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Paper Abstract

An analysis is conducted with a finite size lamp arc located at the focal point of a paraboloid reflector. It is shown how the illumination is affected when, the focal length is slightly changed, the lamp arc is slightly out of position and the arc size is changed. Also, the sensitivity rate is determined due to these changes. This provides available tolerances and better understanding of the system before its fabrication. Case studies are discussed using standard conic sections. In one case, a rectangular beam is desired and in another case the reflector is modified, without redesigning to double the beam cone size. After modification, a three dimensional beam pattern was measured and plotted. Some concepts are discussed showing unique optical system for dynamic simulations. An application of optical beats is discussed. The beats phenomenon is quite popular in the field of sound and vibration studies. Here it will be shown how 'beats' could be used for optical adjustments where a linear photodiode array is used as an image receptor, such as in the case of a facsimile document scanner.

Paper Details

Date Published: 24 October 1988
PDF: 13 pages
Proc. SPIE 0958, Automotive Displays and Industrial Illumination, (24 October 1988); doi: 10.1117/12.947734
Show Author Affiliations
Jagdish T. Madhav, Northrop Corporation (United States)

Published in SPIE Proceedings Vol. 0958:
Automotive Displays and Industrial Illumination
B. Jin Chang; Thomas M. Lemons, Editor(s)

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