Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1981-05-11
1983-06-14
Corbin, John K.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351209, A61B 314
Patent
active
043879748
ABSTRACT:
An eye position measurement circuit is disclosed for calculating the posin of the cornea of the human eye. The eye position measurement circuit includes a dual axis infrared light detector which will sense the position of the cornea of the eye upon receiving pulsed infrared light reflected from the cornea of the eye. The dual axis infrared light detector is, in turn, connected in unique combination with filters, absolute value circuits, analog-to-digital converters, latches, a digital computer, and other electronic components for calculating the position of the cornea of the human eye.
REFERENCES:
patent: 3217706 (1965-11-01), Sullivan
patent: 3473868 (1969-10-01), Young et al.
patent: 4169663 (1979-10-01), Murr
Bond Gary M.
Marshall Albert H.
Adams Robert W.
Beers Robert F.
Corbin John K.
Dzierzynski Paul M.
The United States of America as represented by the Secretary of
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