Lens guide mechanism of a lens shutter type of camera
January 9, 2017. 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 ReferencesControl mechanism for optical system with independently movable components Apparatus for detecting open F number in zoom lens camera Zoom lens barrel and camera incorporating such barrel Aperture and focus adjusting device for a camera Varifocal lens Encoder device Power zoom optical unit with encoder Zoom lens device and method of assembling the same Zoom apparatus for a camera having count generating means and count modifying means for enhancing accuracy at selected focal lengths Drive control apparatus of lens housing for camera Patent #: 5640616 InventorsAssigneeApplicationNo. 781022 filed on 01/09/1997US Classes:396/87, Having position sensor396/451, Between the lens components396/462Having shutter between lens componentsExaminersPrimary: Lee, EddieAttorney, Agent or FirmForeign Patent References
International ClassesG03B 017/00G03B 009/08 Foreign Application Priority Data1996-01-26 JPAbstractA lens guide mechanism has first and second members positioned adjacent to each other in which the second member supports a lens group. The second member is movable relative to the first member along an optical axis of the lens group. The lens guide mechanism also has a first guide shaft extending from the first member to the second member in a direction of the optical axis, one end of the first guide shaft being secured to the second member, a lens shutter provided on the first member, a first encoder provided on the first member for detecting a size of a diaphragm formed by the lens shutter which includes a first photosensor and a first rotating disk associated with the first photosensor, and a second encoder provided on the first member for detecting an axial position of the lens group which includes a second photosensor and a second rotating disk associated with the second photosensor. The first and second rotating disks are positioned adjacent to the guide shaft where the first guide shaft is positioned between the first and second rotating disks. | |
