Miniature and large aperture retrofocus wide-angle photographic

Details Miniature and large aperture retrofocus wide-angle photographic Miniature and large aperture retrofocus wide-angle photographic

1976-04-02

1978-06-20

Clark, Conrad J.

350210, 350214, G02B 964

Patent

active

040958736

ABSTRACT:
A miniature and large aperture retrofocus wide-angle photographic lens whose aberration is satisfactorily corrected is composed of five lens groups, A thru E, satisfying the following conditions (I) to (IV):

REFERENCES:
patent: 3512874 (1970-05-01), Woltche
patent: 3877795 (1975-04-01), Yamashita

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