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:
Mar. 27, 2018
Filed:
Jun. 14, 2012
Richard Hainzl, Sollentuna, SE;
Mattias Kuldkepp, Sollentuna, SE;
Peter Blixt, Hägersten, SE;
Mårten Skogö, Danderyd, SE;
Richard Hainzl, Sollentuna, SE;
Mattias Kuldkepp, Sollentuna, SE;
Peter Blixt, Hägersten, SE;
Mårten Skogö, Danderyd, SE;
Tobii AB, Danderyd, SE;
Abstract
A subject () is illuminated whose movements of at least one eye are to be registered by an eye-tracker for producing resulting data (D). To this aim, a coherent light source in light producing means () produces at least one well-defined light beam (L, L). A diffractive optical element is arranged between the coherent light source and an output from the light producing means (). The diffractive optical element is configured to direct a light beam (L) towards at least a first designated area (A) estimated to cover the at least one eye of the subject (). Image registering means () registers light from the at least one light beam (L, L) having been reflected against the subject (). The resulting data (D) are produced in response to these light reflections, which resulting data (D) represent movements of the at least one eye of the subject ().