Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1994-06-09
1996-08-20
Sikes, William L.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351208, 351210, 351246, 354 62, A61B 314, A61B 310, G03B 2900
Patent
active
055483542
ABSTRACT:
An apparatus for observing and photographing cornea cells including an indicator projecting means, and eye-front observation optical system, an illuminating system for illuminating through a slit the eyeball surface obliquely, an enlarged imaging optical system for forming an enlarged image of the subject part by a TV camera based on the illuminating light, and a cornea self-focusing detector which is automatically moved in X and Y directions with respect to the optical axis of the eye-front observation optical system such that the light spot on the monitor screen by the reflected light from the subject part of the position detection indicator is brought to a specified position on the screen whereby an enlarged image of the cells is recorded and photographed and displayed simultaneously with the eye-front image in which the light spot of the photographing sight is positioned.
REFERENCES:
patent: 5107851 (1992-04-01), Yano et al.
patent: 5381194 (1995-01-01), Nishio et al.
Kasahara Tatsuya
Yoichi Hamada
Konan Common Co., Ltd.
Mai Huy
Sikes William L.
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