Telephoto objective

Details Telephoto objective Telephoto objective

1981-10-05

1984-08-28

Corbin, John K.

G02B 964, G02B 1302

Patent

active

044680996

ABSTRACT:
Disclosed is a compact high-performance telephoto objective having two groups of which the front group is of positive power and the rear group is of negative power. The front lens group having, from front to rear, three lenses of positive power and one lens of negative power, and the rear lens group having, from front to rear, a lens of positive power and a cemented lens of negative power followed by at least one cemented lens of negative power.

REFERENCES:
patent: 4293197 (1981-10-01), Kobayashi et al.

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