Curved field photographic objective

Details Curved field photographic objective Curved field photographic objective

1982-09-20

1985-01-22

Corbin, John K.

350412, 350450, G02B 962

Patent

active

044948298

ABSTRACT:
The invention provides a highly corrected optical system comprising six groups consisting of ten elements, the indicies of refraction of which range from 1.654 to 1.807, the image surface being generally shallowly concave to the object.

REFERENCES:
patent: 3370905 (1968-02-01), Hudson
patent: 3802765 (1974-04-01), Vuijk

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