Projection lens and projection television system using the same

Details Projection lens and projection television system using the same Projection lens and projection television system using the same

1990-02-28

1992-03-24

Arnold, Bruce Y.

Optical: systems and elements

Lens

Including a nonspherical surface

359726, 359754, G02B 964

Patent

active

050993615

ABSTRACT:
A projection lens for projecting images displayed on an image display device having angle-of-view dependency has high image focusing characteristics corresponding to high definition images, wide field angle, and telecentric characteristics. In addition, a projection television system using the same can be minimized in its size.

REFERENCES:
patent: 3864026 (1975-02-01), Glatzel
patent: 4875064 (1989-10-01), Umeda et al.
"Optical System for High Definition Liquid Crystal Projection TV", Development Research Lab., Matsushita Electric Industrial Co., Ltd.

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