Dual Mode Calligraphic/Raster Color Cathode Ray Tube (CRT) Projector

Richard E. Holmes

doi:10.1117/12.970242

16 August 1983 Dual Mode Calligraphic/Raster Color Cathode Ray Tube (CRT) Projector

Richard E. Holmes

Proceedings Volume 0386, Advances in Display Technology III; (1983) https://doi.org/10.1117/12.970242
Event: 1983 Los Angeles Technical Symposium, 1983, Los Angeles, United States

Abstract

Wider and brighter are key words when describing the wants of users of projection television (TV). Higher resolution and truer colors also rank high on the list of desirable features. In aircraft flight simulators, there is the need for static, and sometimes dynamic, raster shaping for off-axis projection on large dome screens. To top off these conflicting requirements is the need for time shared calligraphic (stroke writing or vector refresh) and raster TV operation in some computer image generation systems. This paper describes some of the concepts being investigated for such a cathode ray tube (CRT) projector. Problems associated with optics, color convergence, cooling of the CRT faceplates and deflection are discussed. In addition, the problems associated with the side-by-side merging of multiple projectors for very wide field of view projection (Videorama) are addressed.

Citation Download Citation

Richard E. Holmes "Dual Mode Calligraphic/Raster Color Cathode Ray Tube (CRT) Projector", Proc. SPIE 0386, Advances in Display Technology III, (16 August 1983); https://doi.org/10.1117/12.970242

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