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

YaFeng Qiu; BenKang Chang; LianJun Sun; JunJu Zhang; YouTang Gao; RongGuo Fu

doi:10.1117/12.790673

3 March 2008 Ambient light effect on the uniformity of image intensifier fluorescence screen brightness

YaFeng Qiu, BenKang Chang, LianJun Sun, JunJu Zhang, YouTang Gao, RongGuo Fu

Proceedings Volume 6621, International Symposium on Photoelectronic Detection and Imaging 2007: Photoelectronic Imaging and Detection; 66210S (2008) https://doi.org/10.1117/12.790673
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

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.

Citation Download Citation

YaFeng Qiu, BenKang Chang, LianJun Sun, JunJu Zhang, YouTang Gao, and RongGuo Fu "Ambient light effect on the uniformity of image intensifier fluorescence screen brightness", Proc. SPIE 6621, International Symposium on Photoelectronic Detection and Imaging 2007: Photoelectronic Imaging and Detection, 66210S (3 March 2008); https://doi.org/10.1117/12.790673

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KEYWORDS

Luminescence

Charge-coupled devices

Image intensifiers

MATLAB

Image analysis

Microscopes

Signal to noise ratio

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