International Journal of Optics and Photonics
IJOP
Basic Sciences
http://ijop.ir
1
admin
1735-8590
2538-4007
10.61186/ijop
1735-8590
en
jalali
1394
8
1
gregorian
2015
11
1
9
2
online
1
fulltext
en
Defocusing Effect Studies in MTF of CCD Cameras Based on PSF Measuring Technique
عمومى
General
كاربردي
Applicable
<p dir="ltr" style="text-align: justify">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.</p>
CCD, Cut-off Frequency, Defocusing, MTF, PSF.
87
92
http://ijop.ir/browse.php?a_code=A-10-436-1&slc_lang=en&sid=1
Amir Hossein
Shahbazi
amir.shahbazi@ut.ac.ir
10031947532846001365
10031947532846001365
Yes
University of Tehran
Khosro
Madanipour
madanipour@aut.ac.ir
10031947532846001366
10031947532846001366
No
Amirkabir University of Technology
Ata
Koohian
koohian@ut.ac.ir
10031947532846001367
10031947532846001367
No
University of Tehran