Projection display device

Details Projection display device Projection display device

1989-11-30

1991-01-01

Cuchlinski, Jr., William A.

Optics: image projectors

Composite projected image

Multicolor picture

353 81, 353 37, 350286, 350424, 350397, 350173, 350359, G02B 2700

Patent

active

049813528

ABSTRACT:
A projection display device having a dichroic prism having at least two incident surfaces and an emergence surface, separate color image emitting elements being disposed in opposing relation to the two incidence surfaces, respectively, of the dichoric prism, and a projection lens being disposed in opposing relation the emergence surface of the dichroic prism, so that color images produced by the separate color image emitting elements are combined by the dichroic prism and projected onto a screen through said projection lens, wherein the end surface of said dichroic prism which is closer to said projection lens comprises a curved surface.

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patent: 4850685 (1989-07-01), Kamakura et al.
patent: 4861142 (1989-08-01), Tanaka et al.
patent: 4895433 (1990-01-01), Takahashi et al.

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