1 December 1990 Real-time tunable incoherent spatial filtering: two-pupil processing technique
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Optical Engineering, 29(12), (1990). doi:10.1117/12.55753
Abstract
A two-pupil heterodyne scanning system has been used previously to perform bipolar incoherent spatial filtering. In this paper, we exploit the system's potential in tunability. It is shown and verified experimentally that with two offset pupil functions, both having Gaussian shape, we can achieve tunable bandpass filtering operations. Potential applications in space-variant filtering on incoherent objects are discussed.
Ting-Chung Poon, Jinwoo Park, Guy J. M. Indebetouw, "Real-time tunable incoherent spatial filtering: two-pupil processing technique," Optical Engineering 29(12), (1 December 1990). http://dx.doi.org/10.1117/12.55753
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KEYWORDS
Modulation transfer functions

Optical transfer functions

Spatial filters

Heterodyning

Spatial frequencies

Bandpass filters

Tunable filters

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