Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1997-10-27
1999-06-01
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
A61B 314
Patent
active
059092688
ABSTRACT:
An alignment detecting apparatus for detecting an alignment condition between an eye to be examined having approximately spherical surface or approximately toric surface and a device having a standard axial lines the apparatus comprising a target projecting optical system which includes a first target projecting optical system for projecting a first target with a predetermined angle relative to the standard axial line, and a second target projecting optical system for projecting a second target with a different angle compared with the angle of the first target projecting optical system relative to the standard axial lines of which at least one between the first and second targets is a target of a finite distances a detecting optical system for detecting positions of images of the first and second targets which are projected onto the eye by the first and second target projecting optical systems, and a judging device for judging the alignment condition based on results detected by the detecting optical system.
REFERENCES:
patent: 4591247 (1986-05-01), Kamiya et al.
patent: 4707090 (1987-11-01), Humphery
patent: 5247341 (1993-09-01), Kurachi et al.
patent: 5406076 (1995-04-01), Mimura et al.
patent: 5463430 (1995-10-01), Isogai et al.
patent: 5500697 (1996-03-01), Fujieda
patent: 5562656 (1996-10-01), Sumiya
Gono Mitsuhiro
Ishihara Noriyuki
Isogai Naoki
Kato Koki
Kobayashi Nobuharu
Manuel George
Nidek Co. Ltd.
LandOfFree
Alignment detecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alignment detecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alignment detecting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-958344