Wide angle eyepiece

Details Wide angle eyepiece Wide angle eyepiece

1984-01-05

1985-06-25

Corbin, John K.

350469, G02B 958, G02B 2504

Patent

active

045250359

ABSTRACT:
A wide angle eyepiece having reduced astigmatism at the edge of the field and comprising a doublet, a singlet, a singlet, and a doublet, wherein the doublets have negative power.

REFERENCES:
patent: 3390935 (1968-07-01), Scidmore
patent: 4286844 (1981-09-01), Nagler

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