Illumination optical system and projector apparatus using the sa

Details Illumination optical system and projector apparatus using the sa Illumination optical system and projector apparatus using the sa

1999-03-19

2000-09-12

Mack, Ricky

Optical: systems and elements

Single channel simultaneously to or from plural channels

362268, G02B 2710, F21V 2900

Patent

active

061185884

ABSTRACT:
In an illumination optical system comprising a light source section 10, an integrator section 11, and condenser lenses 15, 28, the common optical axis X.sub.0 of the light source section 10 and integrator section 11 and the common optical axis X.sub.1 of the two condenser lenses 15, 28 are shifted in parallel from each other by a predetermined distance. As a consequence, each principal ray incident on a projection lens 25 is made oblique to the optical axis X.sub.2 of the projection lens 25, whereby the side of a liquid crystal display panel 23 from the projection lens 25 is formed as a non-telecentric system.

REFERENCES:
patent: 4769750 (1988-09-01), Matsumoto et al.
patent: 5418583 (1995-05-01), Matsumoto

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