Lens barrel
Patent 6490097 Issued on December 3, 2002. Estimated Expiration Date: 
March 28, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 28, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCamera of changeable focal length Zoom lens barrel and camera incorporating such barrel Lens barrel High magnification zoom lens barrel including a drive ring having a short length to provide a compact camera Zoom lens barrel Patent #: 5982566 InventorAssigneeApplicationNo. 818495 filed on 03/28/2001US Classes:359/694, Adjusting mechanism396/83, Having mechanical interlock396/132, Dual purpose motor396/448Lens coverExaminersPrimary: Epps, GeorgiaAssistant: Hindi, Omar Attorney, Agent or FirmForeign Patent References
International ClassesG02B 015/14G02B 017/00 Foreign Application Priority Data2000-03-31 JPAbstractA lens barrel includes first and second cylinders, a base, a single motor, a feed screw, a rotation mechanism, a helicoid mechanism, and a drive gear for transmitting a drive force of the motor to the feed screw and the rotation mechanism. The drive gear includes a cylindrical gear and a shaft gear having a shaft inserted in the cylindrical gear. The cylindrical gear and the shaft gear rotate about a common rotation axis. The cylindrical gear is interposed between the rotation mechanism and the motor, and the shaft gear is interposed between the feed screw and the motor. Accordingly, zooming and focusing can be driven by one motor, increasing integration and providing excellent space efficiency. | |
