A Variable Focus, Single Lens, 3 CRT Dichroic Color Graphics Projector

Terry C. Schmidt

doi:10.1117/12.961232

5 May 1986 A Variable Focus, Single Lens, 3 CRT Dichroic Color Graphics Projector

Terry C. Schmidt

Proceedings Volume 0624, Advances in Display Technology VI; (1986) https://doi.org/10.1117/12.961232
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States

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.

Citation Download Citation

Terry C. Schmidt "A Variable Focus, Single Lens, 3 CRT Dichroic Color Graphics Projector", Proc. SPIE 0624, Advances in Display Technology VI, (5 May 1986); https://doi.org/10.1117/12.961232

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