Eyepiece system

Details Eyepiece system Eyepiece system

1996-04-17

1998-06-09

Sugarman, Scott J.

Optical: systems and elements

Lens

Eyepiece

359717, G02B 2500, G02B 1318

Patent

active

057644187

ABSTRACT:
An eyepiece system for use with binoculars, etc. which comprises, in order from a side of an observer's eye, a first convex lens element having a strongly convex surface on a side of an objective lens, and a cemented doublet lens component which consists of a second biconvex lens element and a third negative or negative meniscus lens element. This eyepiece system is configured to have a wide apparent field angle and favorably corrected aberrations by selecting an adequate value for a distance as measured from a front focal point of the eyepiece system to a vertex on a surface of the first lens element which is located on the side of the observer's eye.

REFERENCES:
patent: 1159233 (1915-11-01), Konig
patent: 3472577 (1969-10-01), Rosin et al.
patent: 5162945 (1992-11-01), Matsuo et al.
patent: 5557463 (1996-09-01), Ueno

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