Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1997-12-01
1998-11-24
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
A61B 313
Patent
active
058415025
ABSTRACT:
An ophthalmic apparatus including measuring device, comprises a moving device for moving the measuring device relatively to the eye, an alignment detecting device for detecting alignment condition between the measuring device and the eye by projecting an alignment target to the eye, then detecting an image of the target, a movement-controlling device for performing alignment by driving and controlling the moving device based on the detected results, a returning device for causing the measuring device to return to a standard position, a returning-instruction device for instructing the returning device to start movement, a returning-control device for controlling movement of the returning device in response to instruction by the returning-instruction device, a risk sensing device for sensing whether there is risk that the apparatus touches the eye caused by movement of the returning device, and a prohibiting device for prohibiting the returning device from moving to all or predetermined directions at the time when the risk sensing device senses that there is risk that the apparatus touches the eye.
REFERENCES:
patent: 5360010 (1994-11-01), Applegate et al.
patent: 5387952 (1995-02-01), Byer
patent: 5532769 (1996-07-01), Miwa et al.
Manuel George
Nidek Co. Ltd.
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