Sensor modulation transfer function measurement using band-limited laser speckle

被引：15

作者：

Chen, Xi ^{[1
]}

George, Nicholas ^{[2
]}

Agranov, Gennadiy ^{[1
]}

Liu, Changmeng ^{[1
]}

Gravelle, Bob ^{[1
]}

机构：

[1] Aptina Imaging, San Jose, CA 95124 USA

[2] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 24期

关键词：

D O I：

10.1364/OE.16.020047

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new methodology for image sensor modulation transfer function measurement using band-limited laser speckle is presented. We use a circular opal milk glass diffuser illuminated by a 5m W He-Ne laser and a linear polarizer to generate band-limited speckle on the sensor. The power spectral density cut-off frequency of the speckle is chosen to be twice that of the sensor Nyquist frequency by placing the sensor at the specific Z location along the optical axis. For the speckle input, we calculate the power spectral density at the sensor using the Rayleigh-Sommerfeld integral and then measure the output power spectral density for the speckle pattern captured by the sensor. With these data, the two-dimensional image sensor modulation transfer function (MTF) is calculated. (C) 2008 Optical Society of America

引用

页码：20047 / 20059

页数：13

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