Patent · US Active

Eye-tracker illumination

US9924864B2 · kind B2 · utility

4Cited by

0References

17Claims

0Family size

Assignee

Tobii AB · SE

Inventors

Richard Hainzl · Stockholm, SE
Mattias Kuldkepp · Sollentuna, SE
Peter Blixt · Danderyd, SE
Mårten Skogö · Danderyd, SE

Key dates

Filing date	Jun 14, 2012
Grant date	Mar 27, 2018
Priority date	—
Expiry date	Jun 13, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06V40/19
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A subject (180) is illuminated whose movements of at least one eye are to be registered by an eye-tracker for producing resulting data (DEYE). To this aim, a coherent light source in light producing means (140) produces at least one well-defined light beam (L1, L2). A diffractive optical element is arranged between the coherent light source and an output from the light producing means (140). The diffractive optical element is configured to direct a light beam (L1) towards at least a first designated area (A1) estimated to cover the at least one eye of the subject (180). Image registering means (150) registers light from the at least one light beam (L1, L2) having been reflected against the subject (180). The resulting data (DEYE) are produced in response to these light reflections, which resulting data (DEYE) represent movements of the at least one eye of the subject (180).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.