Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1994-07-05
1996-04-09
Sikes, William L.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351207, 351216, A61B 310
Patent
active
055066348
ABSTRACT:
Apparatus 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.
REFERENCES:
patent: 4283124 (1981-08-01), Matsumura
patent: 4572627 (1986-02-01), Madate et al.
patent: 4666268 (1987-05-01), Ito
patent: 5067951 (1991-11-01), Greve
patent: 5116116 (1992-05-01), Aizu et al.
"Scanning Laser Ophthalmoscope" by R. H. Web and G. W. Hughes, IEEE Trans. on Biomedical Engineering, vol. BME-28, No. 7, Jul. 1981, pp. 488-492.
Huang et al., "Optical Coherence Tomography" Science, 254, Nov. 22, 1991, pp. 1178-1181.
Hellmuth Thomas
Wei Jay
Carl Zeiss, Inc.
Einschlag Michael B.
Mai Huy
Sikes William L.
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