Projection optical system for a liquid crystal projector

Details Projection optical system for a liquid crystal projector Projection optical system for a liquid crystal projector

1994-12-06

1996-07-23

Epps, Georgia Y.

Optical: systems and elements

Lens

With field curvature shaping

359756, G02B 300

Patent

active

055395805

ABSTRACT:
A projection optical system for a liquid crystal projector having a plurality of lenses and projecting an image from liquid crystal display devices onto a screen including a front lens portion having a meniscus lens, a first concave lens, a convex lens and a second concave lens sequentially arranged from the furthermost of an image plane. A rear lens portion is also provided having two plano-convex lenses positioned between the front lens portion and image plane (display screen), with the flat surfaces thereof facing the image plane. The projection optical system for a liquid crystal projector having a compact size and capable of projecting focused images on the screen by adjusting the distance between the front and rear lens portions.

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