Projector and method for manufacturing projector

Details Projector and method for manufacturing projector Projector and method for manufacturing projector

2006-08-07

2010-10-26

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Particular condenser

C353S038000

Reexamination Certificate

active

07819534

ABSTRACT:
A projector includes: a light source that emits an illumination flux; a first lens array having plural first small lenses that split the illumination flux from the light source into plural partial luminous fluxes; a second lens array having plural second small lenses corresponding to the plural first small lenses; a superimposing lens that superimposes each partial luminous flux from the second lens array onto an illuminated area; an electro-optic modulator that modulates the light superimposed by the superimposing lens in accordance with image information; and a projection system that projects the light modulated by the electro-optic modulator; wherein the projector further has an optical lens arranged in an optical path between the superimposing lens and the electro-optic modulator, and the optical lens, together with the superimposing lens, forms a superimposing system that has a different focal length from the focal length of the superimposing lens and that has substantially the same focal position as the focal position of the superimposing lens.

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patent: WO 2005/036256 (2005-04-01), None
Hecht, Optics, Copyright 2002,Addison Wesley,1301, fourth edition, p. 168.

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