Zoom interlocking mechanism for binocular

Details Zoom interlocking mechanism for binocular Zoom interlocking mechanism for binocular

1985-04-19

1986-08-12

Henry, Jon W.

G02B 706, G02B 2300

Patent

active

046052887

ABSTRACT:
A binocular having left and right zoom mechanisms operatively associated with each other by a belt transmission has a zoom interlocking mechanism which includes an adjustment plate. Tightening pulleys incorporated in the belt transmission between the left and right zoom mechanisms adjust tension in the belt so that the belt is kept at a constant tension. This results in both telescopic optical systems being maintained at the same magnification independently of their rotation around the central shaft for the adjustment of interpupillary distance.

REFERENCES:
patent: 2602371 (1952-07-01), Harford

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