Laser display of an electronically generated image signal

Details Laser display of an electronically generated image signal Laser display of an electronically generated image signal

1983-12-16

1987-03-31

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 63, 358231, H04N 574

Patent

active

046547169

ABSTRACT:
A laser device includes, within an envelope, an electron gun, and a structure providing a light resonating cavity which includes confronting reflecting surfaces and a semiconductor material which is pumped by the electron beam producing emission of light within the cavity. The resonator cavity consists of mirror bodies having confronting reflective surfaces in parallel planes, one surface being fully reflective and one surface being partially reflective, and a semiconductor wafer mounted adjacent to one of the mirror bodies to be impinged by the electron beam. The electron beam is swept across the semiconductor wafer in a selected pattern, such as the conventional television pattern, and a laser beam is emitted from the lasering device which follows the pattern traced by the electron beam. The apparatus may be controlled by a television produced signal. The produced laser beam is modulated by means of a crystal lens modulator controlled by a television signal; and the beam is projected onto a viewing target or screen through a suitable lens system.

REFERENCES:
patent: 3699438 (1972-10-01), Pinnow
patent: 3727001 (1973-04-01), Gottlieb
patent: 4150396 (1979-04-01), Hareng
Maser and Laser Engineering, by Dr. Ishii, Robert E. Krieger Publishing Company, New York, 1980, pp. 231-287.

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