Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1998-04-21
1999-10-12
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
A61B 300
Patent
active
059661976
ABSTRACT:
Improved devices, systems, and methods for sensing and tracking the position of an eye make use of the contrast between the sclera and iris to derive eye position. In many embodiments, linear photodetectors extend from the iris to the sclera. The eye is positioned between a pair of such linear photodetectors, and movement of the eye from one linear detector toward the other linear detector changes the relative amounts of light striking each linear detector. These pairs of linear photodetectors can accurately sense and measure one-dimensional positioning error and provide feedback to a one-dimensional positioning apparatus, resulting in a simple, highly linear system capable of accurate position tracking.
REFERENCES:
patent: 4169663 (1979-10-01), Murr
patent: 4421486 (1983-12-01), Baldwin et al.
patent: 4579430 (1986-04-01), Billie
patent: 4669466 (1987-06-01), L'Esperance
patent: 4836670 (1989-06-01), Hutchinson
patent: 4852988 (1989-08-01), Velez et al.
patent: 4950069 (1990-08-01), Hutchinson
patent: 4973149 (1990-11-01), Hutchinson
patent: 5098426 (1992-03-01), Sklar et al.
patent: 5162641 (1992-11-01), Fountain
patent: 5345281 (1994-09-01), Taboda et al.
patent: 5410376 (1995-04-01), Cornsweet et al.
patent: 5474548 (1995-12-01), Knopp et al.
patent: 5572596 (1996-11-01), Wildes et al.
patent: 5620436 (1997-04-01), Lang et al.
patent: 5632742 (1997-05-01), Frey et al.
Young and Sheena, Behavior Research Methods and Instrumentation (1975) vol. 7, No. 5, Survey of eye movement recording methods, pp. 401-429.
Manuel George
VISX Incorporated
LandOfFree
Linear array eye tracker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Linear array eye tracker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear array eye tracker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-657567