Liquid crystal projector

Details Liquid crystal projector Liquid crystal projector

2006-02-28

2006-02-28

Dowling, William C. (Department: 2851)

Optics: image projectors

Lens support

C353S033000, C353S119000, C349S005000, C349S058000

Reexamination Certificate

active

07004589

ABSTRACT:
A liquid crystal projector of three-color type has three liquid crystal elements for modulating three primary color light bundles into three color optical images respectively. A recombination prism combines modulated three color optical images, and a projection lens system projects the combined full-color image on a screen. The projection lens system is constituted of the front lens group and the first and second rear lens groups. The front lens group and the rear lens groups are mounted to frames that are formed integrally on a prism base plate to which the recombination prism is fixed.

REFERENCES:
patent: 6226055 (2001-05-01), Koba
patent: 6609796 (2003-08-01), Maki et al.
patent: 6890079 (2005-05-01), Okuyama et al.
patent: 2003/0025844 (2003-02-01), Suzuki

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