Eyepiece lens system

Details Eyepiece lens system Eyepiece lens system

1996-12-20

1998-03-24

Nelms, David C.

Optical: systems and elements

Lens

Eyepiece

359794, G02B 2500

Patent

active

057319057

ABSTRACT:
An eyepiece lens system comprising a first positive lens component and a second positive lens component: the first lens component being composed of a single positive lens element, and the second lens component being composed of a single cemented doublet consisting of a positive lens element and a negative lens element. This eyepiece lens system has distortion which is corrected favorably by selecting an adequate refractive power for a cemented surface of the cemented doublet and is configured so as to have a sufficiently long eyepoint distance.

REFERENCES:
patent: 3888567 (1975-06-01), Shoemaker
patent: 3994570 (1976-11-01), Sussman
patent: 4099842 (1978-07-01), Kaneko
patent: 5162945 (1992-11-01), Matsuo et al.
patent: 5568319 (1996-10-01), Kaneko et al.

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