Compact video projector

Details Compact video projector Compact video projector

1994-05-18

1995-07-04

Groody, James J.

Television

Video display

Projection device

348757, 348780, H04N 931, H04N 916, H04N 918

Patent

active

054305012

ABSTRACT:
A projector is provided with three CRTs, a mirror system, and a projection lens. The three CRTs radiating light beams of colors different from one another are arranged such that respective tube axes thereof exist on the same plane. The mirror system includes dichroic mirrors for reflecting the light beams of the respective colors from the CRTs in a direction perpendicular to the above plane. The mirror system is arranged at front sides of the CRTs. The projection lens is arranged on an optical path of the reflected light beam from the mirror system so as to combine the reflected light beams of the respective colors and to project the combined light beam onto the screen. The thus constructed projector has a short depth since the light beams from the respective CRTs are projected in the direction perpendicular to the above plane by the dichroic mirrors of the mirror system.

REFERENCES:
patent: 4473840 (1984-09-01), Miyatake
patent: 4578710 (1986-03-01), Hasegawa

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