Illumination optical system, image display optical system,...

Details Illumination optical system, image display optical system,... Illumination optical system, image display optical system,...

2006-06-13

2006-06-13

Dowling, William C. (Department: 2851)

Optics: image projectors

Unitary plural refracting surfaces

C353S031000, C353S122000, C349S005000

Reexamination Certificate

active

07059723

ABSTRACT:
An illumination optical system that illuminates a plurality of image display elements comprises; a color separating optical system that separates light emitted from a light source into a plurality of color light components; and a plurality of light-guiding optical systems, each of which guides light component to a corresponding one of the plurality of image display elements. An illumination area on the image display element that is illuminated by at least one of the plurality of light-guiding optical systems is larger than those on the image display elements illuminated by the other ones of the plurality of light-guiding optical systems. This provides a compact projection type image display apparatus which can project bright images.

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