Telephoto lens system

Details Telephoto lens system Telephoto lens system

1989-02-17

1990-02-27

Sugerman, Scott J.

G02B 1302

Patent

active

049040707

ABSTRACT:
A compact high-performance telephoto lens system that has an aperture ratio of approximately 1:4 to 1:4.5, a half viewing angle of approximately 2.degree. to 3.degree. and a telephoto ratio of approximately 0.8. The lens system satisfies the following conditions:

REFERENCES:
patent: 4518229 (1985-05-01), Yasukuni
patent: 4534626 (1985-08-01), Mihara
patent: 4556295 (1985-12-01), Okudaira
patent: 4709998 (1987-12-01), Yamanashi
patent: 4812026 (1989-03-01), Iima

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