Binocular with a movable unit including an erecting system and a

Details Binocular with a movable unit including an erecting system and a Binocular with a movable unit including an erecting system and a

1997-08-19

1999-07-27

Henry, Jon

Optical: systems and elements

Compound lens system

Telescope

359408, 359431, G02B 2318, G02B 2302, G02B 712

Patent

active

059300353

ABSTRACT:
A binocular includes two parallel telescope systems. Each telescope system includes an objective system, an erecting system and an eyepiece system. The erecting system and the eyepiece system of each telescope system are part of a movable unit which is movable toward and away from a front-most lens of the objective system. The movable unit can be moved towards the front-most lens to a position in which an object cannot be viewed through the telescope system.

REFERENCES:
patent: 535862 (1895-03-01), Sawyer
patent: 3244072 (1966-04-01), Dowling et al.
patent: 4205894 (1980-06-01), Filipovich et al.
patent: 5305141 (1994-04-01), Hotta
patent: 5581399 (1996-12-01), Abe
patent: 5640271 (1997-06-01), Nishitani et al.
Nikkei Mechanical No. 462, pp. 72-77, issued on Sep. 4, 1995, with an English translation of the same.

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