Optical system for use in an image projector

Details Optical system for use in an image projector Optical system for use in an image projector

1999-02-26

2000-07-18

Epps, Georgia

Optical: systems and elements

Lens

With field curvature shaping

359629, 359691, 362268, G02B 300, G02B 2714, G02B 1514, F21V 2126

Patent

active

060915501

ABSTRACT:
A projector optical system has a reflection-type display panel, an illumination optical system for illuminating the reflection-type display panel, a projection optical system for projecting the images displayed on the reflection-type display panel onto a projected surface, and a light-deriving means for directing illumination light toward the reflection-type display panel. The projection optical system has, from the projected-surface side, a front lens unit and a rear lens unit. The light-deriving means is disposed between the front and rear lens units. Additionally, the following condition is fulfilled:

REFERENCES:
patent: 5404175 (1995-04-01), Nagae
patent: 5552938 (1996-09-01), Sugawara

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