Projection apparatus

Details Projection apparatus Projection apparatus

2007-07-18

2010-11-09

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Composite projected image

Multicolor picture

C353S101000

Reexamination Certificate

active

07828444

ABSTRACT:
A projection apparatus including an illumination system, a light valve, a first optical element, a first projection lens, and a second projection lens is provided. The illumination system is suitable to provide an illumination beam, and the light valve is disposed on a transmission path of the illumination beam. The light valve is suitable to convert the illumination beam into an image beam. The first optical element is disposed on a transmission path of the image beam. A portion of the image beam is reflected by the first optical element, and a remaining portion of the image beam passes through the first optical element. The first projection lens is disposed on a transmission path of the image beam passing through the first optical element, and the second projection lens is disposed on a transmission path of the image beam reflected by the first optical element.

REFERENCES:
patent: 6814450 (2004-11-01), Kim
patent: 2006/0103815 (2006-05-01), Peterson
patent: 1403846 (2003-03-01), None
patent: 2005-77715 (2005-03-01), None

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