Lens system with frontal aperture stop

Details Lens system with frontal aperture stop Lens system with frontal aperture stop

1976-05-25

1978-06-06

Clark, Conrad J.

350220, G02B 934

Patent

active

040933482

ABSTRACT:
An objective lens system particularly adapted for photography with a frontal aperture stop is provided. The lens system includes four lens components including a positive doublet. A diaphragm is provided in front of the first lens component and the lens system satisfies the following relationships;

REFERENCES:
patent: 1888156 (1932-11-01), Bielicke
patent: 3011402 (1961-12-01), Johnson

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