Fixed-focal-length lens system

Details Fixed-focal-length lens system Fixed-focal-length lens system

1993-06-15

1994-05-10

Arnold, Bruce Y.

Optical: systems and elements

Lens

Reverse telephoto

359793, G02B 904

Patent

active

053113632

ABSTRACT:
A fixed-focal-length lens system includes first and second lens groups arranged in order from front to rear. The first lens group consists of a plurality of lenses and has a negative refracting power and the second lens group consists of a plurality of lenses and has a positive refracting power. The fixed-focal-length lens system satisfies the following conditions

REFERENCES:
patent: 5233474 (1993-08-01), Hirakawa

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