Image Formation In Confocal Optical Systems

Colin J. R. Sheppard; Tony Wilson

doi:10.1117/12.958890

22 August 1980 Image Formation In Confocal Optical Systems

Colin J. R. Sheppard, Tony Wilson

Proceedings Volume 0232, 1980 Intl Optical Computing Conf II; (1980) https://doi.org/10.1117/12.958890
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

Scanning image processing systems have the advantage that the image is in a form suitable for further electronic processing, and a particular class of these is the confocal scanning systems which exhibit superior imaging properties compared with conventional systems. Imaging is coherent thus allowing coherent processing to be performed with twice the spatial-frequency cut-off of a conventional processor. The point spread function is also sharper and the outer rings weak, resulting in a response to a step object without fringes. The important feature of the confocal system is that two lenses are involved in the imaging process. An arrangement in which the beam traverses the object more than once is therefore also discussed. This produces an extremely sharp point spread function and interesting optical properties.

Citation Download Citation

Colin J. R. Sheppard and Tony Wilson "Image Formation In Confocal Optical Systems", Proc. SPIE 0232, 1980 Intl Optical Computing Conf II, (22 August 1980); https://doi.org/10.1117/12.958890

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