Telescopic photographing lens system

Details Telescopic photographing lens system Telescopic photographing lens system

1978-07-11

1979-07-17

Sacher, Paul A.

G02B 934

Patent

active

041613503

ABSTRACT:
A telephoto lens system comprises four lenses which are, in order from the object, a positive lens, a negative lens, a positive lens each having a stronger curvature surface directed to the object, and the final lens is a negative meniscus lens concave to the object. The inter-lens distances are progressively larger from the object side of the system.

REFERENCES:
patent: 3868174 (1975-02-01), Yakota

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