Color combining optical system, image projection optical...

Details Color combining optical system, image projection optical... Color combining optical system, image projection optical...

2005-09-13

2005-09-13

Nguyen, Judy (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S034000, C353S069000, C353S081000, C353S082000, C353S084000, C359S490020, C359S634000, C359S640000, C359S831000

Reexamination Certificate

active

06942347

ABSTRACT:
A color combining optical system according to this invention aims at reducing the size of an optical system and suppressing the occurrence of color unevenness. According to this invention, there is provided a color combining optical system for combining color light reflected by a dichroic film and color light transmitted through the dichroic film. The optical thickness of the dichroic film increases or decreases from one end side to the other end side in the inclining direction of the dichroic film with respect to the incident optical axis of the color light reflected by the dichroic film.

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Communication from the European Patent Office dated Sep. 27, 2004 for Appl. No. 01306697.2-2202.

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