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Illumination System Measurement Using CCD Cameras

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Abstract

Accurate measurement of illumination system performance, e.g. efficiency and uniformity, has typically been accomplished using photo detectors at the “image plane”. This is a time-consuming task, even when aided by computer-controlled goniometers. A new method of illumination measurement using CCD cameras and specialized software is presented. The method greatly reduces the time required to record measurements, and significantly improves the quantity, quality, and comprehensiveness of the data. It can be applied to both steady-state systems, or transient systems, such as camera flash reflectors. In addition, such a system can be utilized to record accurate, digital images of an illumination source, which can be useful in illumination system design and modeling.

© 1994 Optical Society of America

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