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Proceedings Paper

Ambient light effect on the uniformity of image intensifier fluorescence screen brightness
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Paper Abstract

When testing the uniformity of Image intensifier fluorescence screen brightness, the million scale CCD brightness meter is used. Due to the distance between the meter and fluorescence screen, the effect of ambient light on the testing result is essential to the design of testing system. Test with super second generation tube, input a constant voltage to insure the fluorescence screen brightness to be constant. Collect the brightness of the same fluorescence screen in different ambient luminance environment of 1×102Lx, 1×101Lx, 1Lx, 1×10-1Lx, 1×10-2Lx, 1×10-3Lx. Study the results with software MATLAB. It is concluded as: In ambient luminance environment of 1×10-1Lx the CCD has the best result. The testing result in ambient luminance environment of above 1×103Lx show untrue image. The testing result in ambient luminance environment of below 1×10-3Lx shows its own noise image and is unbelievable either.

Paper Details

Date Published: 3 March 2008
PDF: 6 pages
Proc. SPIE 6621, International Symposium on Photoelectronic Detection and Imaging 2007: Photoelectronic Imaging and Detection, 66210S (3 March 2008); doi: 10.1117/12.790673
Show Author Affiliations
YaFeng Qiu, Nanjing Univ. of Science & Technology (China)
BenKang Chang, Nanjing Univ. of Science & Technology (China)
LianJun Sun, Nanjing Univ. of Science & Technology (China)
JunJu Zhang, Nanjing Univ. of Science & Technology (China)
YouTang Gao, Nanjing Univ. of Science & Technology (China)
RongGuo Fu, Nanjing Univ. of Science & Technology (China)


Published in SPIE Proceedings Vol. 6621:
International Symposium on Photoelectronic Detection and Imaging 2007: Photoelectronic Imaging and Detection

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