Laser apparatus including binocular indirect ophthalmoscope
Patent 5252999 Issued on October 12, 1993. Estimated Expiration Date: 
October 22, 2011. 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.
October 22, 2011. 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 ReferencesPhotocoagulator Optical system for surgical ophthalmic laser instrument Indirect ophthalmoscopic photocoagulation delivery system for retinal surgery Binocular ophthalmoscope Method for detecting cataractogenesis Ophthalmologic apparatus Patent #: 5067951 InventorsAssigneeApplicationNo. 780507 filed on 10/22/1991US Classes:351/221, Including illuminator351/205, Objective type351/214Including diaphram or slitExaminersPrimary: Bovernick, Rodney B.Assistant: Dang, Hung Xuan Attorney, Agent or FirmForeign Patent References
International ClassA61B 003/10Foreign Application Priority Data1990-10-26 JPAbstractThis application discloses a laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising, an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope, an optical element, which reflects the treatment laser beam while penetrates a pair of observation beams of the binocular indirect ophthalmoscope is provided in the object side of an ophthalmoscope lens, an optical system which directs the treatment laser beam to said optical element so that the axis of the treatment laser beam coincides with the substantial center of said pair of observation beam axes, whereby the power of the treatment laser beam becomes stable owing to above constitution. | |
