Lens unit for projector

Details Lens unit for projector Lens unit for projector

1997-08-08

1999-02-02

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

362 32, G02B 2710, F21V 704

Patent

active

058673202

ABSTRACT:
A lens unit, for a projector, includes a scrambler which converts light input from a lamp into a uniform light. An image lens unit is arranged on an optical path between the scrambler and a liquid crystal display (LCD) panel for generating an image. The image lens unit allows the light passing through the scrambler to be emitted to the entire surface of the LCD panel. A collimating lens is arranged on the optical path between the image lens and the LCD panel and is provided for converting the light passing through the image lens into a parallel beam. The image lens unit consists of a first image lens of a positive power and a second image lens of a positive power.

REFERENCES:
patent: 4918583 (1990-04-01), Kudo et al.
patent: 5170454 (1992-12-01), Kanai
patent: 5748376 (1998-05-01), Lin et al.

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