Projection type display apparatus

Details Projection type display apparatus Projection type display apparatus

1993-09-22

1994-05-24

Cuchlinski, Jr., William A.

Optics: image projectors

Composite projected image

Multicolor picture

353102, 359 40, 359 54, G03B 2100

Patent

active

053153308

ABSTRACT:
A projection type image display apparatus which includes a light source, a first optical means situated along an optical path between the light source and the transmissive display device so as to converge the light rays from the light source and enable the principal light rays to enter the transmissive display device in parallel with each other, a second optical means disposed on an opposite side to the light source with respect to the transmissive display device so as to converge the light rays from the transmissive display device, and a third optical means disposed near a rear focus of the second optical means so as to project a transmitted light image on a screen.

REFERENCES:
patent: 3704936 (1972-12-01), Gorkiewicz et al.
patent: 4231640 (1980-11-01), Funada et al.
Japanese Laid-Open Patent Publication No. 61-140384, Laid on Aug. 30, 1986.

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