Binoculars having diopter adjustment

Details Binoculars having diopter adjustment Binoculars having diopter adjustment

2011-03-22

2011-03-22

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Compound lens system

Telescope

C359S407000, C359S410000

Reexamination Certificate

active

07911691

ABSTRACT:
Binoculars include first and second lens barrels. A bridge interconnects the lens barrels. First and second optical systems are accommodated in respectively the lens barrels. First and second focus lenses are included in respectively the first and second optical systems, for focus adjustment by moving in an optical axis direction. An operation barrel is secured to the bridge, and externally rotatable and movable in the optical axis direction between a focus adjusting position and a diopter adjusting position. A focus adjuster with gear teeth and screw threads moves the first and second focus lenses simultaneously in the optical axis direction when the operation barrel is rotated in the focus adjusting position. A diopter adjuster, including gear teeth, an intermediate rod and screw threads, moves the second focus lens in the optical axis direction when the operation barrel is rotated in the diopter adjusting position.

REFERENCES:
patent: 5064279 (1991-11-01), Riedl
patent: 6335825 (2002-01-01), Funatsu
patent: 7330310 (2008-02-01), Hengst et al.
patent: 2005/0122581 (2005-06-01), Luthardt et al.
patent: 2006/0033990 (2006-02-01), Kato et al.
patent: 3-163512 (1991-07-01), None
patent: 2000-56205 (2000-02-01), None

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