Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1990-09-05
1993-04-27
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351211, 351205, 351221, A61B 310
Patent
active
052066720
ABSTRACT:
There are disclosed an improved method and apparatus which derive the optical characteristics of a lens system from a plurality of measurement beams and can display the same. Included is an imaging channel which cooperates with a microprocessor for detecting the measurement beams and processing the detected beam information to derive the optical characteristics of the lens system.
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Arno James
Arnold Bruce Y.
Brody Christopher
Dang Hung Xuan
Nestle S.A.
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