Focusing mechanism for binoculars

Details Focusing mechanism for binoculars Focusing mechanism for binoculars

1990-10-17

1993-05-18

Arnold, Bruce Y.

Optical: systems and elements

Compound lens system

Telescope

359410, 359418, G02B 2300

Patent

active

052125912

ABSTRACT:
In binoculars employing a pair of telephotographic optical systems with their respective optical axes being arranged in parallel to each other, the telephotographic optical systems having a lens group for focusing, respectively, and at least one of the telephotographic optical systems having a lens group for diopter-adjusting; first shaft member for simultaneously moving each lens group for focusing in an optical axis direction; and second shaft member for moving the lens group for diopter-adjusting in the optical direction; wherein the first shaft member and the second shaft member are arranged coaxially. Thus, it becomes possible to adjust a diopter-difference and a difference of eye contact positions by means of a single mechanism and to easily adjust focusing with a simple arrangement.

REFERENCES:
patent: 4162820 (1979-07-01), Schwab et al.
patent: 4329013 (1982-05-01), Hengst
patent: 4545656 (1985-10-01), Takano
patent: 4571038 (1986-02-01), Jako
patent: 4630901 (1986-12-01), Altenheiner et al.
patent: 4750823 (1988-06-01), Riedl
patent: 4867533 (1989-09-01), Akin, Jr.
patent: 4998357 (1991-03-01), Farnling et al.
patent: 5064279 (1991-11-01), Riedl

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