Adjusting mechanism of binoculars

Details Adjusting mechanism of binoculars Adjusting mechanism of binoculars

1991-07-05

1993-03-02

Henry, Jon W.

Optical: systems and elements

Compound lens system

Telescope

G02B 706, G02B 2318

Patent

active

051914719

ABSTRACT:
In a binocular, an operating knob member is provided for operating an adjusting mechanism such as a diopter difference adjusting mechanism by rotation thereof. The operating knob is arranged to be shiftable between two positions in which the amount of the externally protruded portion of the knob is relatively small and large, respectively. When the operating knob is operated, it is positioned at its largely protruded position, while when the operating knob is not necessary, it is positioned at its less protruded position.

REFERENCES:
patent: 937834 (1909-10-01), Martin et al.
patent: 2811895 (1957-11-01), Jensen
patent: 3100404 (1963-08-01), Boeddeker et al.
patent: 3484149 (1969-12-01), Becker et al.
patent: 3712704 (1973-01-01), Sato
patent: 4630901 (1986-12-01), Altenheiner et al.
patent: 4750823 (1988-06-01), Riedl
patent: 4989963 (1991-02-01), Farnung et al.
patent: 5071242 (1991-12-01), Yanagisawa

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