Fundus illumination apparatus formed from three, separated radiation path systems
Patent 5506634 Issued on April 9, 1996. Estimated Expiration Date: 
July 5, 2014. 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.
July 5, 2014. 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 ReferencesEye fundus camera Eye fundus camera Optical device having a focusing function Ophthalmologic apparatus Ophthalmological diagnosis method Patent #: 5116116 InventorsAssigneeApplicationNo. 270750 filed on 07/05/1994US Classes:351/221, Including illuminator351/207, Having spurious reflection blocking351/216Including lens selectively insertable in optical pathExaminersPrimary: Sikes, William L.Assistant: Mai, Huy Attorney, Agent or FirmForeign Patent References
International ClassA61B 003/10AbstractApparatus for illuminating the fundus of an eye with a scanned sample beam of radiation. An embodiment of the present invention is an optical system which includes three, separated radiation path systems--a tilted illumination path system, a decentered observation path system, and an optical path system--which are combined by a beamsplitter into an ocular lens. In accordance with the present invention, an illuminating path provided by the illumination path system and an optical beam path provided by the optical beam path system are obliquely oriented with respect to the optical axis of the ocular lens.Other References
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