Lens barrel
Patent 5166829 Issued on November 24, 1992. Estimated Expiration Date: 
January 22, 2011. 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.
January 22, 2011. 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 ReferencesSingle operator macro-focusing zoom lens barrel Optical lens moving mechanism Zoom lens drive mechanism of a camera Patent #: 4971427 InventorAssigneeApplicationNo. 643729 filed on 01/22/1991US Classes:359/699, Having cam device359/823With axial adjustment (e.g., adjustable focus, etc.)ExaminersPrimary: Gonzalez, FrankAttorney, Agent or FirmInternational ClassG02B 015/00Foreign Application Priority Data1990-01-30 JPAbstractDisclosed is a lens barrel for conducting zooming by moving at least first and second lenses in the direction of an optical axis. The lens barrel includes a plate cam arranged to be pivoted by the movement of the first lens in the direction of the optical axis, the plate cam having at least a first cam portion for the second lens, and a moving mechanism having a first cam follower which is in contact with the first cam portion of the plate cam, the moving mechanism moving the second lens in the direction of the optical axis when the plate cam is pivoted. | |
