Fast aspherical lens system

Details Fast aspherical lens system Fast aspherical lens system

1994-06-16

1996-09-17

Bovernick, Rodney B.

Optical: systems and elements

Lens

Reverse telephoto

359755, 359708, G02B 1304, G02B 964, G02B 302

Patent

active

055574726

ABSTRACT:
A fast lens system is provided which includes a front lens group having a negative power, a diaphragm, and a rear lens group having a positive power, arranged in this order from a side of an object of the lens system. The lens system satisfies the following conditions:

REFERENCES:
patent: 2785603 (1957-03-01), Cook
patent: 3033082 (1962-05-01), Merigold
patent: 3738738 (1973-06-01), Takahashi
patent: 3870402 (1975-03-01), Takahashi et al.
patent: 3975091 (1976-08-01), Takahashi
patent: 4487485 (1984-12-01), Hisada
patent: 4566764 (1986-01-01), Matsuo
patent: 5162945 (1992-11-01), Matsuo et al.

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