Variant Ernostar type long focus lens system

Details Variant Ernostar type long focus lens system Variant Ernostar type long focus lens system

1976-12-27

1978-09-19

Clark, Conrad J.

G02B 1130

Patent

active

041149920

ABSTRACT:
A variant Ernostar type long focus lens system having a very short overall length comprising a first positive miniscus lens, a second positive meniscus lens and a third positive meniscus lens which are arranged very close to one another, a fourth negative meniscus lens and a fifth positive meniscus lens, and said lens system having a focal length of 180-200 mm and a telephoto ratio of approximately 0.93.

REFERENCES:
patent: 3749478 (1973-07-01), Nakagawa

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