Projection type display apparatus

Details Projection type display apparatus Projection type display apparatus

1990-11-29

1993-07-27

Cuchlinski, Jr., William A.

Optics: image projectors

Composite projected image

Multicolor picture

353 37, 353 34, 353 69, 359 40, G03B 2128

Patent

active

052314316

ABSTRACT:
This specification discloses a projection type display apparatus in which the lights of a plurality of display means forming images of different color component lights are reflected by or transmitted through a dichroic mirror to effect color synthesis and the synthesized lights are projected onto a screen by a projection lens. The astigmatism created by the lights being transmitted through the obliquely disposed dichroic mirror is suppressed to thereby obtain a good quality of image.

REFERENCES:
patent: 4864390 (1989-09-01), McKechnie et al.
patent: 4909601 (1990-03-01), Yajima et al.
patent: 4981352 (1991-01-01), Tejima et al.

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