Sensor modulation transfer function measurement using band-limited laser speckle
Optics Express, Vol. 16, Issue 24, pp. 20047-20059 (2008)
http://dx.doi.org/10.1364/OE.16.020047
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Abstract
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 5mW 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.
© 2008 Optical Society of America
OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(130.6010) Integrated optics : Sensors
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: September 30, 2008
Revised Manuscript: November 10, 2008
Manuscript Accepted: November 14, 2008
Published: November 20, 2008
Citation
Xi Chen, Nicholas George, Gennadiy Agranov, Changmeng Liu, and Bob Gravelle, "Sensor modulation transfer function measurement using band-limited laser speckle," Opt. Express 16, 20047-20059 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-24-20047
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References
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