Macrolens assembly having a distance adjustment of more than 360 degrees
Patent 4898453 Issued on February 6, 1990. Estimated Expiration Date: 
August 12, 2008. 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.
August 12, 2008. 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 ReferencesActuating device for photographic lens assembly Lens moving device Lens barrel Patent #: 4763987 InventorAssigneeApplicationNo. 231483 filed on 08/12/1988US Classes:359/822, Adjustable359/830With ringExaminersPrimary: Arnold, Bruce Y.Assistant: Ben, Loha Attorney, Agent or FirmForeign Patent References
International ClassG02B 007/02Foreign Application Priority Data1988-03-16 ATAbstractA macrolens assembly which has two distance setting rings which are coaxially arranged and are fitted into each other and each of which has on its radial exterior a distance scale. A control window is provided in the lens mount and in the outermost distance setting ring directly abutting there against in radial direction. The inner distance setting ring which can be rotated manually by means of a driving ring can be coupled to the outer distance setting ring by a driver formed as a ball catch. In this way, after one rotation of the driving ring, first the scale on the outer distance setting ring, when the scale on the inner distance setting, becomes visible. | |
