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公开(公告)号：US20170224211A1
公开(公告)日：2017-08-10
申请号：US15581548
申请日：2017-04-28
Applicant: Tobii AB
Inventor： Peter Blixt , Gunnar Troili , Anders Kingbäck , John Mikael Elvesjö , Mårten Skogö
CPC classification number: G06K9/00604 , A61B3/0008 , A61B3/0025 , A61B3/113 , A61B3/14 , A61B3/145
Abstract: An eye tracker comprising at least one illuminator for illuminating an eye, at least two cameras for imaging the eye and a controller is disclosed. The configuration of the reference illuminator(s) and cameras is such that, at least one camera is coaxial with a reference illuminator and at least one camera is non-coaxial with a reference illuminator. On the one hand, the controller is adapted to select one of the cameras to be active with the aim of maximising an image quality metric and avoiding obscuring objects. On the other hand, the eye tracker is operable in a dual-camera mode to improve accuracy. The invention further provides a method and computer-program product for selecting a combination of an active reference illuminator from a plurality of reference illuminators and an active camera from a plurality of cameras.
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公开(公告)号：US11256087B2
公开(公告)日：2022-02-22
申请号：US16456805
申请日：2019-06-28
Applicant: Tobii AB
Inventor： Daniel Tornèus , Peter Schef , Magnus Arvidsson , Peter Blixt , Fredrik Mattinson
Abstract: The disclosure relates to an eye tracking device for tracking movements of an eye comprising, a viewing plane for displaying a projection of an image to the eye of a user, an image module placed on a same side of the viewing plane as the eye, at least one illuminator for illuminating the eye, a control unit adapted to receive an image captured by the image module, and calculate a viewing angle of the eye, a holographic optical element (HOE), wherein a HOE is placed between the eye and the viewing plane, wherein the image module is adapted to capture an image of the HOE, and wherein the HOE is adapted to direct at last a first portion of incident light reflected from the eye, in a first angle towards the image module, the first angle being different from an angle of the incidence of the incident light.
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公开(公告)号：US20200159012A1
公开(公告)日：2020-05-21
申请号：US16456805
申请日：2019-06-28
Applicant: Tobii AB
Inventor： Daniel Tornèus , Peter Schef , Magnus Arvidsson , Peter Blixt
Abstract: The disclosure relates to an eye tracking device for tracking movements of an eye comprising, a viewing plane for displaying a projection of an image to the eye of a user, an image module placed on a same side of the viewing plane as the eye, at least one illuminator for illuminating the eye, a control unit adapted to receive an image captured by the image module, and calculate a viewing angle of the eye, a holographic optical element (HOE), wherein a HOE is placed between the eye and the viewing plane, wherein the image module is adapted to capture an image of the HOE, and wherein the HOE is adapted to direct at last a first portion of incident light reflected from the eye, in a first angle towards the image module, the first angle being different from an angle of the incidence of the incident light
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公开(公告)号：US10313587B2
公开(公告)日：2019-06-04
申请号：US15831511
申请日：2017-12-05
Applicant: Tobii AB
Inventor： Henrik Eskilsson , Mårten Skogö , John Elvesjö , Peter Blixt
Abstract: An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured, in the active mode, to use active eye illumination, which enables tracking of a corneal reflection, and to provide eye tracking data which include eye position and eye orientation; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode.
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公开(公告)号：US10307054B2
公开(公告)日：2019-06-04
申请号：US15581548
申请日：2017-04-28
Applicant: Tobii AB
Inventor： Peter Blixt , Gunnar Troili , Anders Kingbäck , John Mikael Elvesjö , Märten Skogö
Abstract: A method includes obtaining an image of an eye in a bright-pupil imaging mode in which a retinal retro-reflection complements the image of the eye in the bright-pupil mode, and obtaining an image of the eye in a dark-pupil imaging mode in which a cornea-scleral retro-reflection complements the image of the eye in the dark-pupil mode. One of the bright-pupil imaging mode and the dark-pupil imaging mode is selected based on quality of obtained images.
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Patent Agency Ranking
公开(公告)号：US09791912B2
公开(公告)日：2017-10-17
申请号：US14354903
申请日：2012-10-26
Applicant: TOBII AB
Inventor： John Mikael Elvesjö , Anders Kingbäck , Gunnar Troili , Mårten Skogö , Henrik Eskilsson , Peter Blixt
CPC classification number: G06F1/3231 , G06F1/3265 , G06F1/3287 , G06F3/013 , G06K9/00221 , Y02D10/171
Abstract: A personal computer system comprises a visual display, an imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer of the visual display, and identifying means for recognizing the viewer with reference to one of a plurality of predefined personal profiles. The personal computer system further comprises an eye-tracking processor for processing the eye-tracking data. According to the invention, the eye-tracking processor is selectively operable in one of a plurality of personalized active sub-modes associated with said personal profiles. The sub-modes may differ with regard to eye-tracking related or power-management related settings. Further, the identifying means may sense an identified viewer's actual viewing condition (e.g., use of viewing aids or wearing of garments), wherein the imaging device is further operable in a sub profile mode associated with the determined actual viewing condition.
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公开(公告)号：US20170249509A1
公开(公告)日：2017-08-31
申请号：US15595672
申请日：2017-05-15
Applicant: TOBII AB
Inventor： Peter Blixt , Gunnar Troili , Anders Kingbäck , John Mikael Elvesjö , Mårten Skogö
CPC classification number: G06K9/00604 , A61B3/0008 , A61B3/0025 , A61B3/113 , A61B3/14 , A61B3/145
Abstract: A method includes obtaining an image of an eye in a bright-pupil imaging mode in which a retinal retro-reflection complements the image of the eye in the bright-pupil mode, and obtaining an image of the eye in a dark-pupil imaging mode in which a corneo-scleral retro-reflection complements the image of the eye in the dark-pupil mode. One of the bright-pupil imaging mode and the dark-pupil imaging mode is selected based on quality of obtained images.
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公开(公告)号：US09649029B2
公开(公告)日：2017-05-16
申请号：US14563063
申请日：2014-12-08
Applicant: Tobii AB
Inventor： Peter Blixt , Gunnar Troili , Anders Kingbäck , John Mikael Elvesjö , Mårten Skogö
CPC classification number: G06K9/00604 , A61B3/0008 , A61B3/0025 , A61B3/113 , A61B3/14 , A61B3/145
Abstract: A method includes obtaining an image of an eye in a bright-pupil imaging mode in which a retinal retro-reflection complements the image of the eye in the bright-pupil mode, and obtaining an image of the eye in a dark-pupil imaging mode in which a cornea-scleral retro-reflection complements the image of the eye in the dark-pupil mode. One of the bright-pupil imaging mode and the dark-pupil imaging mode is selected based on quality of obtained images.
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公开(公告)号：US20170090564A1
公开(公告)日：2017-03-30
申请号：US15276618
申请日：2016-09-26
Applicant: Tobii AB
Inventor： Simon Gustafsson , Anders Kingbäck , Peter Blixt , Richard Hainzl
Abstract: A system for determining a gaze direction of a user in a wearable device is disclosed. The system may include a display device, a primary lens, an illuminator, and a plurality of imaging device. The primary lens may be disposed in front of the display device. The illuminator may be configured to illuminate an eye of a user. The plurality of imaging devices may be disposed on or in the primary lens to detect light reflected by the eye of the user.
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公开(公告)号：US20160314349A1
公开(公告)日：2016-10-27
申请号：US15202915
申请日：2016-07-06
Applicant: Tobii AB
Inventor： Henrik Eskilsson , Mårten Skogö , John Elvesjö , Peter Blixt
CPC classification number: H04N5/23241 , G02B27/0172 , G02B2027/0138 , G06F3/013 , G06K9/00597 , G09G2330/021 , G09G2354/00 , H04N5/23245
Abstract: An imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer, wherein: the imaging device is switchable between at least an active mode and a ready mode; the imaging device is configured to use active eye illumination in the active mode, which enables tracking of a corneal reflection; and the imaging device is configured, in the ready mode, to reduce an illumination intensity from a value the illumination intensity has in the active mode, and to provide eye-tracking data which include eye position but not eye orientation.
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