Projection lenses for use with large pixelized panels

Details Projection lenses for use with large pixelized panels Projection lenses for use with large pixelized panels

1997-08-11

2000-02-08

Sugarman, Scott J.

Optical: systems and elements

Lens

With field curvature shaping

359713, 359714, 359757, 359764, G02B 1318, G02B 960, G02B 962

Patent

active

060233753

ABSTRACT:
A projection lens for use with LCD panels is provided. The lens has a first lens unit which has a positive power and a second lens unit which has a negative power. The first lens unit contains at least four lens elements, namely, a positive first lens element, a negative second lens element which is composed of a high dispersion material, a third lens element of weak optical power, and a positive fourth lens element of strong optical power. The projection lens achieves a correction of chromatic aberration on the order of about a quarter of pixel for large LCD panels having pixels on the order of 200 microns.

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