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Defocusing Effect Studies in MTF of CCD Cameras Based on PSF Measuring Technique
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نویسنده
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Shahbazi Amir Hossein ,Madanipour Khosro ,Koohian Ata
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منبع
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international journal of optics and photonics - 2015 - دوره : 9 - شماره : 2 - صفحه:87 -92
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چکیده
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Defocusing effects in modulation transfer function (mtf) measurement of charge coupled device (ccd) cameras is the main focus of current paper. we introduce measuring point-spread function (psf) in order to calculate the mtf and further more we will study the shape of mtf and its cut-off frequency by adjusting the lens focusing in different locations. a collimated white light led by broadband spectra is used as source and our results shows that the cut-off frequency is related to defocusing.
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کلیدواژه
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CCD ,Cut-off Frequency ,Defocusing ,MTF ,PSF.
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آدرس
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university of tehran, University of Tehran, ایران, amirkabir university of technology, Amirkabir University of Technology, ایران, university of tehran, University of Tehran, ایران
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پست الکترونیکی
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koohian@ut.ac.ir
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Authors
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