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Proceedings Paper

Modeling of constant irradiance illumination system
Author(s): Jonathan D. Scheuch
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Paper Abstract

The optical system discusses is an integrating sphere based uniform source. The system consists of an integrating sphere illuminated with a tungsten halogen lamp system. The output of the integrating sphere is projected using a large single- element collimating lens. Such a system is advantageous in the testing of optical detectors since in a specific region of the projected beam the irradiance is constant in a volume around the optical axis and for a significant distance along the optical axis. This property eases the positioning requirements of devices under test relative to the lens. Relative irradiance predictions of a plane in the collimated beam made using ZEMAX Optical Design Program are presented. Measured data of the relative irradiance in this specific plane achieved with the implemented optical system are presented. Comparison between the predictions and measured data are made. Predictions agreed with the measured data to within 5%.

Paper Details

Date Published: 20 October 1998
PDF: 6 pages
Proc. SPIE 3428, Illumination and Source Engineering, (20 October 1998); doi: 10.1117/12.327965
Show Author Affiliations
Jonathan D. Scheuch, Labsphere, Inc. (United States)

Published in SPIE Proceedings Vol. 3428:
Illumination and Source Engineering
Angelo V. Arecchi, Editor(s)

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