Automatic focus system with loss of correlation inhibit
Patent 4085320 Issued on April 18, 1978. Estimated Expiration Date: 
April 18, 1995. 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.
April 18, 1995. 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 3553455 Focusing apparatus for optical systems Automatic focusing system including quantizing means Patent #: 4012634 InventorAssigneeApplicationNo. 730483 filed on 10/07/1976US Classes:250/201.8, Based on image shift250/204, Adjusting optical system to balance brightness in plural paths396/116, Scanning type396/128Image correlation typeExaminersPrimary: Nelms, David C.Attorney, Agent or FirmInternational ClassG01F 001/20AbstractAn automatic continuous focus system of the spatial image correlation type includes means for inhibiting movement of the primary lens if the correlation signal lacks a sufficient amount of variation. | |
