The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 1997
Filed:
Jun. 25, 1996
Applicant:
Inventors:
Philip C Hobbs, Briarcliff Manor, NY (US);
Theodore G van Kessel, Millbrook, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356355 ; 356359 ; 356345 ; 356349 ;
Abstract
An inexpensive eye tracking system requires no head gear. The eye tracking system uses the interference fringes between the corneal glint and the 'red eye' retinal reflection to obtain an angularly resolved, background-immune eye point signal for use as a pointing device for personal computers. Tunable (eye safe) diode laser spectroscopy is used to measure the period and amplitude of the Fabry-Perot fringes caused by the interference between the corneal glint and the 'red' reflection form the retina.