Binoculars having diopter adjustment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 22, 2011
Grant Date -
Dec 11, 2008
app pub date -
Jun 5, 2008
filing date -
Jun 7, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
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Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- G02B Class
- 3.47 % this patent is cited more than
- 14 Age
