Zoom interlocking mechanism for binocular
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United States of America Patent
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-
Aug 12, 1986
Grant Date -
N/A
app pub date -
Apr 19, 1985
filing date -
Apr 20, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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