Volume 9, Issue 2 (International Journal of Optics and Photonics (IJOP) Vol 9, No 2, Summer-Fall 2015)                   IJOP 2015, 9(2): 87-92 | Back to browse issues page

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Shahbazi A H, Madanipour K, Koohian A. Defocusing Effect Studies in MTF of CCD Cameras Based on PSF Measuring Technique. IJOP. 2015; 9 (2) :87-92
URL: http://ijop.ir/article-1-203-en.html
Ph. D. Student University of Tehran
Abstract:   (1921 Views)

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.

Full-Text [PDF 301 kb]   (970 Downloads)    
Type of Study: Applicable | Subject: General
Received: 2015/01/31 | Revised: 2015/11/22 | Accepted: 2015/05/12 | Published: 2015/11/22

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