Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1990-03-20
1991-04-23
Dzierzynski, Paul M.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351206, A61B 310
Patent
active
050094980
ABSTRACT:
A keratoscopic instrument capable of automatically compensating for the different optical characteristics exhibited by any of a set of mechanically interchangeable illuminated ring devices without manual recalibration includes on the base portion of each light ring device a plurality of distinctive, light pervious, machine-readable indicator spots illuminated from the keratoscope light source and arranged in a code indicative of the optical characteristics of the ring device in place. Marking information is detected and communicated to a computer controlled image processing system wherein the detected information is automatically utilized, in conjunction with other input data, to process the image.
REFERENCES:
patent: 4772115 (1988-09-01), Gersten et al.
Gersten Martin
Maus Roy
Tibbling Lars
Computed Anatomy Inc.
Dzierzynski Paul M.
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