Binoculars

Details Binoculars Binoculars

1994-02-02

1996-01-16

Ben, Loha

Optical: systems and elements

Compound lens system

Telescope

359418, 359827, 359828, 359643, G02B 2300

Patent

active

054853079

ABSTRACT:
A binocular includes an eye-piece tube, a first lens system associated with the eye-piece tube for providing a base magnification as seen through the eye-piece tube, and an eye-piece module having a second lens system therein which is interchangeably installed in the eye piece tube for changing the position of the first lens system to a position of a preset increase in magnification.

REFERENCES:
patent: 169917 (1875-11-01), Nystrom
patent: 409927 (1889-01-01), Clements
patent: 841262 (1907-01-01), Martin
patent: 967143 (1910-08-01), Arriaga
patent: 1553211 (1925-09-01), Barr et al.
patent: 5000556 (1991-03-01), Katsuma
patent: 5299067 (1994-03-01), Kutz et al.

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