Lens assembly for endoscopic lens system
Patent 6695775 Issued on February 24, 2004. Estimated Expiration Date: 
June 7, 2022. 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.
June 7, 2022. 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 ReferencesEndoscopic instrument with improved closure window Lens unit cemented at circumference of each of lens elements and optical system including the same Lens device with anti-fogging UV-resistant jointing technique for lenses and mounts Endoscope video camera head which can be autoclaved Endoscope capable of being autoclaved Patent #: 6547721 InventorsAssigneeApplicationNo. 10/163527 filed on 06/07/2002US Classes:600/176, Having particular distal lens or window359/513, Sealing600/169Fog preventionExaminersPrimary: Leubecker, John P.Attorney, Agent or FirmInternational ClassesG02B 7/02 (20060101)G02B 23/24 (20060101) Foreign Application Priority Data2001-06-07 JPAbstractAn optical lens assembly containing a plural number of lens elements for an optical system to be incorporated into a tip end portion of an endoscopic insertion instrument. Of a plural number of lenses which constitute an optical system, a metal film layer is formed on confronting outer peripheral surface portions of at least two adjacently located lenses, outside respective effective lens areas, and the two adjacently located lenses are assembled and fixedly bonded together by applying solder to the outer peripheral surface portions with a metal film layer. | |
