Improved aperture for modulation transfer function measurement of detector arrays beyond the Nyquist frequency

被引：13
|
作者：
Ducharme, Alfred D. [1 ]
Temple, Sarah P. [1 ]
机构：
[1] Univ Cent Florida, Dept Engn Technol, Orlando, FL 32816 USA
来源：
OPTICAL ENGINEERING | 2008年 / 47卷 / 09期
关键词：
modulation transfer functions; speckle; charge-coupled devices;
D O I：
10.1117/1.2976798
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The design of an aperture for the generation of laser speckle with a flat power spectrum covering a wide band of the measurement spatial-frequency range is presented. This aperture allows for the measurement of modulation transfer function (MTF) from zero to twice the Nyquist frequency of a two-dimensional detector array. This design mitigates many of the measurement problems inherent in other aperture designs. The MTF measurement of a CCD detector array is used to demonstrate the measurement technique and illustrate the advantages of the new aperture design. (C) 2008 Society of Photo-Optical Instrumentation Engineers.[DOI: 10.1117/1.2976798]
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页数：6
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