Gao Yi. Using Laser Speckle to Measure Modulation Transfer Function (MTF) of CCD[J]. Editorial Office of Optics and Precision Engineering, 1989,(2): 33-36
Gao Yi. Using Laser Speckle to Measure Modulation Transfer Function (MTF) of CCD[J]. Editorial Office of Optics and Precision Engineering, 1989,(2): 33-36DOI:
This paper analyses the concept of OTF in sampled imaging system
discusses the problem incoherently coupled with OTF of lens and describes a new method for measuring MTF of CCD. The main idea of this method is to use laser speckle to produce an input light intensity distribution whose power spectrum has been known in receiving plane of CCD
conduct A/D conversion to the output signal of CCD and then do FFT. to obstain output spectrum. This method can directly test devices without optical or mechanical components of high quality
precision alignment and CCD output amplifier. It is very easy
but useful in the automatic fast test of CCD performance. The MTF of Toshiba TCD102C-1 model CCD has been measured.