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Proceedings Paper

A Variable Focus, Single Lens, 3 CRT Dichroic Color Graphics Projector
Author(s): Terry C. Schmidt
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Paper Abstract

A new lens design, featuring user variable focus adjustment, has been incorporated into a raster scanned 3 CRT graphics and video projector. Since registration is accomplished internally in the crossed dichroic single lens design, good color convergence and focus can be maintained over a large projected image range of 6 to 12 feet diagonal. Field curvature and focus tilt compensation is separately adjustable for optimum focus on curved or flat screens at various projection angles.

Paper Details

Date Published: 5 May 1986
PDF: 6 pages
Proc. SPIE 0624, Advances in Display Technology VI, (5 May 1986); doi: 10.1117/12.961232
Show Author Affiliations
Terry C. Schmidt, Electrohome Limited (Canada)

Published in SPIE Proceedings Vol. 0624:
Advances in Display Technology VI
Elliott Schlam, Editor(s)

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