Display device

Details Display device Display device

1989-02-23

1990-11-13

Haroian, Harry N.

Optics: image projectors

Cabinet encloses projector and one side of screen

Reflector between lamp and screen

353 98, 353122, G03B 2128

Patent

active

049697323

ABSTRACT:
A display device includes equipment for projecting light onto a surface. The equipment includes a beam-splitter for effecting partial reflection and partial transmittance of an incident beam. On one side of the beam-splitter are a light source for directing light onto the beam-splitter and a mirror for directing back towards the beam-splitter light reflected therefrom. On the other side of the beam-splitter is a louvre for permitting passage therethrough of light of incident angle relative to a normal to the beam-splitter with in a predetermined restricted range.

REFERENCES:
patent: 3711188 (1973-01-01), Zehnpfennig
patent: 3807849 (1974-04-01), Lobb
patent: 3941467 (1976-03-01), Kapany et al.
patent: 4026634 (1977-05-01), Fukushima
patent: 4173399 (1979-11-01), Yevick
patent: 4556913 (1985-12-01), Van Breemen et al.
patent: 4586786 (1986-05-01), Suzuki et al.
JP 5479030A by Hitachi Published Jun. 23, 1979 English Language Abstract Published Aug. 29, 1979.

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