Projection lens system

Details Projection lens system Projection lens system

1990-12-13

1992-07-14

Sugarman, Scott J.

Optical: systems and elements

Lens

With field curvature shaping

359708, G02B 1318, G02B 964

Patent

active

051308509

ABSTRACT:
A projection lens system for use in a projection type display and for displaying an image formed on a face plate of a cathode ray tube on a screen. The projection lens system includes of eight lens components disposed at the optical axis. The second and seventh lenses from the image side, among the eight lens components essentially have somewhat weak optical power, and are made up of a plastic lens having aspheric surfaces on both sides.

REFERENCES:
patent: 4300817 (1981-11-01), Betensky
patent: 4767199 (1988-08-01), Yamamoto et al.
patent: 4776681 (1988-10-01), Moskovich

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