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Proceedings Paper

Variable-intensity large-area illuminator for photodetectors and image sensors
Author(s): Miklos Racz; Janos P. Makai
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Paper Abstract

Photometric or radiometric characterization of detectors or detector arrays requires uniform, stable illuminance or irradiance. For the measurement of linearity or spectral linearity the illuminance/irradiance level should be variable without changing either the spectral or angular distribution of the beam. A realization of a set-up using a glass rod as homogenizer is shown. The achieved uniformity is better than +/- 2% over a 40 mm diameter area. The irradiance and illuminance are over 3 mW/cm2 and 20 klux respectively. Suitable choosing the lamp current the set-up produces the spectral distribution of a standard illuminant A recommended by CIE for the measurements of image sensors.

Paper Details

Date Published: 15 October 1993
PDF: 5 pages
Proc. SPIE 2022, Photodetectors and Power Meters, (15 October 1993); doi: 10.1117/12.158573
Show Author Affiliations
Miklos Racz, Research Institute for Technical Physics (Hungary)
Janos P. Makai, Research Institute for Technical Physics (Hungary)

Published in SPIE Proceedings Vol. 2022:
Photodetectors and Power Meters
Kenneth J. Kaufmann, Editor(s)

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