Actuating device for photographic lens assembly
Patent 4496217 Issued on January 29, 1985. Estimated Expiration Date: 
February 28, 2004. 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.
February 28, 2004. 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 References 3329075 3494271 3731987 3817601 InventorAssigneeApplicationNo. 06/583293 filed on 02/28/1984US Classes:359/823, With axial adjustment (e.g., adjustable focus, etc.)74/569FollowerExaminersPrimary: Punter, William H.Attorney, Agent or FirmInternational ClassesF16H 25/18 (20060101)G02B 7/04 (20060101) Foreign Application Priority Data1980-11-28 JPAbstractIn an actuating device for a lens assembly, the lens system of the assembly is mounted in a lens holding member which must be axially moved for focusing the lens assembly. In order to effect axial movement of the holding member, an operating member is fitted on the outer diameter of a cylindrical lens barrel of the assembly to be rotatable about the optical axis of the assembly, with the operating member having an inner peripheral surface wherein there is formed a cam recess for controlling the degree of axial movement of the lens holding member. A cam follower member mounted on the lens holding member is fitted in the cam recess of the operating member and rotative motion of the operating member is converted into axial motion of the lens holding member. | |
