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Proceedings Paper

Research on testing output signal-to-noise ratio of image intensifier
Author(s): Bingqi Liu; Bin Zhou; Zhiyun Gao; Wei Zhang
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Paper Abstract

Image intensifier is the kernel of the low-light-level image device. Output signal-to-noise ratio is one of its important parameters which can reflect the image intensifier’s imaging quality. Traditionally the test of image intensifier’s output signal-to-noise raito is realized by using a multiplier phototube, which method only gets the output signal-to-noise ratio of temporal field and can not evaluate the effect of the space structure’s nonhomogeneity of the fluorescence screen in the round. In view of these defects, the traditional method is replaced by a new one based on the three-dimensional noise theory. In this paper, a set of test formulas of output signal-to-noise ratio in spatio-temporal field which can roundly evaluate the image intensifier’s imaging quality are deduced, a test system based on the planar CCD image gathering and processing system with high sensitivity and low noise is designed. By using digital image processing technology based on Visual C++ and Matlab, a part of tested data of some home image intensifiers are given and subsequently some 3-D graphs of noise which can describe the spatical-temporal field’s imaging character in different brightness gain are drawn. The practical results can show that the new test method is rounded, accurate and visualized.

Paper Details

Date Published: 10 February 2005
PDF: 8 pages
Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); doi: 10.1117/12.572331
Show Author Affiliations
Bingqi Liu, Bejing Institute of Technology (China)
Ordnance Engineering College (China)
Bin Zhou, Ordnance Engineering College (China)
Zhiyun Gao, Beijing Institute of Technology (China)
Wei Zhang, Ordnance Engineering College (China)

Published in SPIE Proceedings Vol. 5638:
Optical Design and Testing II
Yongtian Wang; Zhicheng Weng; Shenghua Ye; Jose M. Sasian, Editor(s)

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