Improved Optical Resolution That Exceeds The Diffraction Limit

C. J. Swigert

doi:10.1117/12.948009

27 January 1989 Improved Optical Resolution That Exceeds The Diffraction Limit

C. J. Swigert

Proceedings Volume 0965, Current Developments in Optical Engineering III; (1989) https://doi.org/10.1117/12.948009
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

This paper illustrates a technique to enhance the image resolution of an optical sensor beyond its Rayleigh diffraction limit. Calibration of the optics and suitable signal processing algorithms to solve the image conditions described herein readily provide imagery enhanced beyond the diffraction limit. A practical example is drawn from an optical experiment set up at Pacific-Sierra Research Corporation, using a video monitor and video camera, all under computer control. Calibration data was taken and the equations for enhanced imagery were solved to demonstrate imagery enhanced by a factor of x2 beyond the Rayleigh limit. Further enhancement is possible and appears to be limited only by the signal-to-noise ratio of the image.

Citation Download Citation

C. J. Swigert "Improved Optical Resolution That Exceeds The Diffraction Limit", Proc. SPIE 0965, Current Developments in Optical Engineering III, (27 January 1989); https://doi.org/10.1117/12.948009

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KEYWORDS

Point spread functions

Image resolution

Video

Cameras

Optical engineering

Sensors

Diffraction

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