Ultrawide angle flat field eyepiece

Details Ultrawide angle flat field eyepiece Ultrawide angle flat field eyepiece

1979-11-07

1981-09-01

Corbin, John K.

G02B 2500

Patent

active

042868440

ABSTRACT:
A wide angle eyepiece having a 90.degree. field of view, a field curvature of at least 15.06 F, and minimal astigmatism.

REFERENCES:
patent: 3586418 (1971-06-01), Abe
patent: 3807835 (1974-04-01), Sussman
patent: 3867018 (1975-02-01), Shoemaker

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