Practical aspects of image system validation using trans-illumination

Andrew T. Cochrane; Garth C. Robins; Gary J. Baker; Raymond M. Bell; Vassilis G. Zarifis; Bruce J. Herman

doi:10.1117/12.672738

23 June 2006 Practical aspects of image system validation using trans-illumination

Andrew T. Cochrane, Garth C. Robins, Gary J. Baker, Raymond M. Bell, Vassilis G. Zarifis, Bruce J. Herman

Proceedings Volume 6271, Modeling, Systems Engineering, and Project Management for Astronomy II; 62711D (2006) https://doi.org/10.1117/12.672738
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

The effects upon imaging due to varying the spatial coherence of the illumination in an optical system are studied. A rotating diffuser is located directly behind the object in an optical system and is trans-illuminated with spatially coherent monochromatic light. The statistical properties of the diffuser surface determine the scattering cone angle and the partial coherence effects in the image. A model is presented that can be used to determine the diffuser properties required to yield incoherent imaging. Two metrics are used to determine if an image is incoherent: the apparent transfer function and image contrast.

Citation Download Citation

Andrew T. Cochrane, Garth C. Robins, Gary J. Baker, Raymond M. Bell, Vassilis G. Zarifis, and Bruce J. Herman "Practical aspects of image system validation using trans-illumination", Proc. SPIE 6271, Modeling, Systems Engineering, and Project Management for Astronomy II, 62711D (23 June 2006); https://doi.org/10.1117/12.672738

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