Electronic Focusing In The Scophony Scanner

Richard V. Johnson

doi:10.1117/12.958641

10 September 1980 Electronic Focusing In The Scophony Scanner

Richard V. Johnson

Proceedings Volume 0222, Laser Scanning and Recording for Advanced Image and Data Handling; (1980) https://doi.org/10.1117/12.958641
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

The Scophony Light Valve when used in a laser scanner exhibits a coherent imaging response. Because of this coherent response, electronic manipulation of the acoustooptic modulator's drive signal can produce unique optical imaging effects, effects which cannot be achieved with the flying spot scanner architecture. An example of this electronic processing is a shift in the plane of best focus of the scanner which is achieved by passing the modulator's drive signal through a chirp filter. This electronic focus shift can enable a three dimensional television display.

Citation Download Citation

Richard V. Johnson "Electronic Focusing In The Scophony Scanner", Proc. SPIE 0222, Laser Scanning and Recording for Advanced Image and Data Handling, (10 September 1980); https://doi.org/10.1117/12.958641

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