Using Photodetector Patents (Class 351/210)
  • Patent number: 10725537
    Abstract: An eye tracking system comprises a structured light emitter, a camera assembly, and a controller. The structured light emitter illuminates a portion of an eye of a user with a dense structured light pattern. The dense structured light pattern produces a distorted illumination pattern on the portion of the eye. The camera assembly captures one or more images of the distorted illumination pattern that is associated with the portion of the eye. The controller estimates a position of the eye based on the captured one or more images and a model of the eye. The eye tracking system may be part of a head-mounted display.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 28, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Julian Iseringhausen, Robert Dale Cavin, Nicholas Daniel Trail, Douglas Robert Lanman
  • Patent number: 10725539
    Abstract: Apparatus, systems and methods configured for eye tracking with slippage detection and correction are disclosed. In one example, a method comprises: obtaining a first image and a second image of a person's eye, with an imaging sensor; determining a position relationship between an eyeball center of the eye and the imaging sensor based on the first image and the second image.
    Type: Grant
    Filed: June 23, 2018
    Date of Patent: July 28, 2020
    Inventor: Xiaochun Nie
  • Patent number: 10722112
    Abstract: A tablet terminal 1A is a measurement apparatus for measuring a subject's eyelid position, and includes a display section 3 that generates a vertically long light emitting region to make a reflection image form on a corneal surface of the subject's eyeball, a camera 5 that images the reflection image formed by the display section 3, and an arithmetic circuit 7 that derives reflection image information concerning a size or position of the reflection image based on image data of the reflection image obtained by the camera 5, and measures the eyelid position based on the reflection image information.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: July 28, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Kazutaka Suzuki, Yoshinori Matsui, Haruyoshi Toyoda, Munenori Takumi, Naotoshi Hakamata
  • Patent number: 10716468
    Abstract: A method and a device for stimulating accommodation of at least one eye of a test person. There is a reliable possibility for determining a set of ophthalmological data relating to at least one eye of the test person and particularly for measuring refractive error of the test person and for determining a corresponding optical correction. The device for determining a set of ophthalmological data relating to at least one eye of a test person, in particular a device for objectively determining refraction comprises: an accommodation stimulating device which is designed to project a virtual target having a spherical effect and having an adjustable cylindrical effect into the at least one eye of the test person; and a measuring device for determining ophthalmological data relating to the at least one eye of the test person.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: July 21, 2020
    Assignee: Rodenstock GmbH
    Inventors: Stephan Trumm, Gregor Esser
  • Patent number: 10702149
    Abstract: Some demonstrative embodiments include apparatuses, systems and/or methods of determining a pupillary distance. For example, a product may include one or more tangible computer-readable non-transitory storage media including computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement operations of measuring a pupillary distance between pupils of a user. The operations may include receiving a captured image comprising first and second reflections of a light of a light source, the first reflection comprising a reflection of the light from a first pupil of the user, and the second reflection comprising a reflection of the light from a second pupil of the user; and determining the pupillary distance based on locations of the first and second reflections in the captured image and an estimated distance between an image capturing device and pupils of the user, when the image is captured.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: July 7, 2020
    Assignee: 6 OVER 6 VISION LTD.
    Inventor: Ofer Limon
  • Patent number: 10698475
    Abstract: A virtual reality interaction method comprises: continuously acquiring image information in front of a user; recognizing a preset interactive object by recognizing a preset identifier in the image information, a surface of the preset interactive object having one or more of the preset identifiers; recognizing a hand action of the user according to the image information; and simulating an interactive action of the user on the preset interactive object in a virtual reality environment according to the hand action and a position of the preset interactive object. The virtual reality interaction method provided by the present disclosure can accurately simulate an interactive action of the user on a real object in a virtual reality environment, thereby improving user experience of virtual reality.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 30, 2020
    Assignee: HTC Corporation
    Inventors: Chi-Yin Choi, Zhongyang Zheng, Shuang Yang, Zhongqian Dong, Bo Wang, Yakun Wang, Tao Yang, Edward Yjhuei Chang, Alvin Graylin
  • Patent number: 10694938
    Abstract: The invention relates to a new type of measurement method for automatically recording and evaluating the Purkinje reflections of an eye in order to determine the malposition (decentration and tilt) of intraocular or natural lenses and to a device for applying said method. According to the invention, the eye is systematically illuminated from different directions and, by means of linear regression, the relative lens orientation is extracted from the position of the Pukinje reflections thus produced.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: June 30, 2020
    Assignee: JANUNTS HOLDING UG (HAFTUNGSBESCHRANKT)
    Inventors: Edgar Janunts, Dominic Putzu, Janine Van Bellen, Michael Möller, Achim Langenbucher
  • Patent number: 10685748
    Abstract: Systems and methods are provided for processing and storing eye-tracking data. A visual stimulus is provided to an experimental subject on a display. Eye-tracking data associated with the behavior of the experimental subject is acquired and stored while observing the visual stimulus on the display. The eye-tracking data is stored as primary data and secondary data, wherein the primary data is stored in an encrypted form using a secret key associated with the experimental subject. In response to a research request, the secondary data is transmitted for storage in a research database and, in response to a second research request authorized by the experimental subject, the primary data is transmitted for storage in the research database subsequent to decrypting the primary data using the secret key.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: June 16, 2020
    Assignee: EyeTech Digital Systems, Inc.
    Inventors: Robert C Chappell, Miles Manning, Sonal Kalbande
  • Patent number: 10664049
    Abstract: A method, computer readable medium, and system are disclosed for gaze tracking. The method includes the steps of receiving reflected light rays at an optical sensor, where all of the reflected light rays converge towards a rotational center of an eye and generating pattern data based on intersections of the reflected light rays at a surface of the optical sensor. A processor computes an estimated gaze direction of the eye based on the pattern data.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: May 26, 2020
    Assignee: NVIDIA Corporation
    Inventors: Joohwan Kim, Ward Lopes, David Patrick Luebke, Chengyuan Lin
  • Patent number: 10642028
    Abstract: A system for adjusting a position of a lens in a wearable device is provided. The system may include a wearable device and a processor. The wearable device may include a display, a lens movably disposed in front of the display, and an eye tracking device including an illuminator and an image sensor. The processor may receive data from the eye tracking device, and determine, based on the data, a first position of the eye of a user wearing the wearable device, where the position is relative to a second position which is fixed with respect to the lens. The processor may also be configured to determine a distance between the first position and the second position, and if the distance is greater than a first value, cause information to be presented to the user indicating that the lens should be moved to a more optimal position.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: May 5, 2020
    Assignee: Tobii AB
    Inventors: Pravin Rana, Daniel Tornéus
  • Patent number: 10634934
    Abstract: The invention provides a method for determining a geometrical parameter of an eye of a subject, such as for determining the position of a center of rotation of the subject's eye, such as for the purpose of personalizing the optical design of corrective ophthalmic lenses, wherein at least two images of the eye are captured with an image capture device while the subject looks in two different gaze directions, and on each image, the pupil and/or the iris of the eye are identified so that a geometrical parameter may be determined for determining a position of a center of rotation of the eye without requiring use of a reference accessory.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: April 28, 2020
    Assignee: ESSILOR INTERNATIONAL
    Inventors: Sylvain Chene, Romain Fayolle
  • Patent number: 10627900
    Abstract: An electronic system tracks a user's gaze to rapidly transport a cursor to a location within a focal region of the user's eye. The electronic system transports the cursor from an initial location across one or more displays to a new location in response to detecting one or more saccadic and/or vergence movements of the user's eye or in response to a signal indicating that the user desires to move the cursor to a new location within a focal region of the user's eye or eyes. In some embodiments, the electronic system moves the cursor to the new location along a trajectory wherein the cursor is visible along at least a portion of the trajectory, enabling the user to find the cursor more easily.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: April 21, 2020
    Assignee: GOOGLE LLC
    Inventors: Nelson G. Publicover, Lewis James Marggraff, Spencer James Connaughton
  • Patent number: 10627898
    Abstract: The invention relates to a method for a user to control a device. According to the invention, the method comprises the following steps:—identification of a device located in a viewing direction of the user (100) by means of analysis of at least one image obtained by an image sensor (111) and containing at least part of the user's (100) face; determination of an oral instruction; transmission of a command associated with the determined oral instruction to the device identified. The invention also relates to a control device (110) in which such a method can be carried out, as well as a system (110, 121, 122) and a motor vehicle (130) comprising such a device (110).
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 21, 2020
    Inventor: Achraf Ben-Hamadou
  • Patent number: 10618521
    Abstract: A system, including: one or more sensors included in an apparatus wearable by a vehicle operator to measure ocular muscle movement; and a computer that includes a processor and a memory, the memory storing instructions executable by the computer such that the computer is programmed to: receive data indicating ocular muscle movement from the wearable sensor; determine, using the measurement, a gaze direction of the operator; use the gaze direction to determine a level of operator attentiveness; and actuate a vehicle operation if the level of operator attentiveness is below a predetermined threshold.
    Type: Grant
    Filed: September 20, 2015
    Date of Patent: April 14, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Devinder Singh Kochhar
  • Patent number: 10614303
    Abstract: Circuitry of a gaze/eye tracking system obtains one or more images of a left eye and one or more images a right eye, determines a gaze direction of the left eye based on at least one obtained image of the left eye, determines a gaze direction of the right eye based on at least one obtained image of the right eye, determines a first confidence value based on the one or more obtained images of the left eye, determines a second confidence value based on the one or more obtained images of the right eye, and determines a final gaze direction based at least in part on the first confidence value and the second confidence value. The first and second confidence values represent indications of the reliability of the determined gaze directions of the left eye and the right eye, respectively. Corresponding methods and computer-readable media are also provided.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: April 7, 2020
    Assignee: Tobii AB
    Inventors: Andreas Klingström, Mattias Kuldkepp, Mårten Skogö
  • Patent number: 10595722
    Abstract: Retinal imaging systems and related methods employ a user specific approach for controlling the reference arm length in an optical coherence tomography (OCT) imaging device. A method includes restraining a user's head relative to an OCT imaging device. A reference arm length adjustment module is controlled to vary a reference arm length to search a user specific range of reference arm lengths to identify a reference arm length for which the OCT image detector produces an OCT signal corresponding to the retina of the user. The user specific range of reference arm lengths covers a smaller range of reference arm lengths than a reference arm length adjustment range of the reference arm length adjustment module.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 24, 2020
    Assignee: Notal Vision Ltd.
    Inventors: Amit Pascal, Omer Rafaeli, Yair Alster, Gidon Goren-Gratzyani
  • Patent number: 10591737
    Abstract: Systems and methods are disclosed for automatic adjustment of straps of a head mounted display. The head mounted display may include a display device, a plurality of straps, and a controller. The controller may monitor eye location data of at least one eye of a user using at least one eye tracking sensor. The controller may direct the user to move the display device to achieve a desired image being displayed on the display device based on the monitored eye location data and accepted eye location data. The controller may monitor strap pressure data associated with the plurality of straps using a plurality of the pressure sensors. The controller may adjust each strap of the plurality of straps using an adjustment actuator to achieve a desired fit of the head mounted display on the user based on the monitored strap pressure data and accepted strap pressure data.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: March 17, 2020
    Assignee: Dell Products L.P.
    Inventors: Yagiz Can Yildiz, Christopher A. Torres
  • Patent number: 10583068
    Abstract: The apparatus comprises: an adjustable lens module, configured to image an object viewed by eyes an eye; an analysis and processing module, configured to determine whether time during which a change amount of a distance between a gaze point of the eye and the eye is within a set range exceeds a set threshold, and when the time exceeds the set threshold, send adjustment triggering information to a parameter generating module; the parameter generating module, configured to generate adjustment information of an imaging parameter of the adjustable lens module according to the adjustment triggering information; and a lens adjustment module, configured to adjust the imaging parameter of the adjustable lens module according to the adjustment information of the imaging parameter. A probability of occurrence or deterioration of a sight problem, e.g., nearsightedness, due to improper use of eyes is reduced without affecting work, study, entertainment, etc. being currently performed by a user.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: March 10, 2020
    Assignee: Beijing Zhigu Rui Tuo Tech Co., Ltd
    Inventor: Lin Du
  • Patent number: 10574966
    Abstract: The present invention relates to a method for modifying at least one video frame of a digital video stream to be displayed on a display area. Each correction scheme has one or more specific digital filters based on visual defects perceived by a person with respect to a video frame portion, is configured when predetermined conditions are met and reconfigured whenever the origin position of an eye reference system associated with a respective eye is different from the position of the same origin in said predetermined conditions and/or the orientation of said eye reference system is different from the orientation of the same eye reference system in said predetermined conditions.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: February 25, 2020
    Assignee: Consiglio Nazionale Delle Ricerche
    Inventors: Carmelo Lodato, Patrizia Ribino
  • Patent number: 10572008
    Abstract: At least one image registering unit records at least one series of images representing a subject. A control unit controls an operation sequence for the at least one image registering unit in such a manner that a subsequent data processing unit receives a repeating sequence of image frames there from, wherein each period contains at least one image frame of a first resolution and at least one image frame of a second resolution being different from the first resolution. Based on the registered image frames, the data processing unit produces eye/gaze tracking data with respect to the subject.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: February 25, 2020
    Assignee: Tobii AB
    Inventors: Mattias Kuldkepp, Marten Skogo, Mattias Hanqvist, Martin Brogren, Dineshkumar Muthusamy
  • Patent number: 10565446
    Abstract: A system for determining a gaze direction of a user of a wearable device is disclosed. The system may include a primary lens, an illuminator, an image sensor, and an interface. The illuminator may include a light guide, may be disposed at least partially on or in the primary lens, and may be configured to illuminate at least one eye of a user. The image sensor may be disposed on or in the primary lens, and may be configured to detect light reflected by the at least one eye of the user. The interface may be configured to provide data from the image sensor to a processor for determining a gaze direction of the user based at least in part on light detected by the image sensor.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: February 18, 2020
    Assignee: Tobii AB
    Inventors: Simon Gustafsson, Anders Kingbäck, Peter Blixt, Richard Hainzl, Mårten Skogö
  • Patent number: 10535139
    Abstract: Systems, devices, media, and methods are presented for gaze-based control of device operations. One method includes receiving a video stream from an imaging device, the video stream depicting one or more eyes, determining a gaze direction for the one or more eyes depicted in the video stream, detecting a change in the gaze direction of the one or more eyes, and triggering an operation in a client device based on the change in the gaze direction.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 14, 2020
    Assignee: Snap Inc.
    Inventor: Fedir Poliakov
  • Patent number: 10520732
    Abstract: Head-mounted display with an eye-tracking system and including a light-transmitting substrate (20) having two major surfaces and edges, optical means for coupling light into said substrate (20) by total internal reflection, partially-reflecting surfaces (22a-22c) carried by the substrate (20) that are not parallel with the major surfaces of the substrate (20), a near-infrared light source (78) and a display source (92) projecting within the photopic spectrum, wherein light from the light source (78) and light from the display source (92) are coupled into the substrate (20) by total internal reflection.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: December 31, 2019
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 10509466
    Abstract: An apparatus for mounting on a head including a frame, A face-wearable near-ocular optics and a micro-display for displaying data in front of the eyes is provided. A computing device is coupled to the micro-display. At least one sensor is coupled to the computing device for receiving biometric human information.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: December 17, 2019
    Assignee: Snap Inc.
    Inventors: Erick Miller, Jonathan Rodriguez
  • Patent number: 10496166
    Abstract: An eye tracking method in the disclosure comprises an image-capturing step of capturing a facial image including an eyeball of an object person, light from a light source that emits the light to form a corneal reflex point on the eyeball of the object person who gazes at a predetermined gaze point being reflected from the eyeball, a detecting step of calculating visual line information in a world coordinate system using the facial image captured in the image-capturing step and a correcting step of transforming the visual line information in the world coordinate system calculated in the detecting step into visual line information in a correction coordinate system that is a coordinate system different from the world coordinate system, and correcting the visual line information in the correction coordinate system using correction information for correcting a detection error caused by an individual difference of the eyeball.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: December 3, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Soichi Kimura, Hidetoshi Takeda, Shingo Yamazoe
  • Patent number: 10498953
    Abstract: Systems, methods, and computer-readable media are disclosed for determining a depth or reflectance of objects. Example methods may include causing, by a camera device, infrared illumination within a field of view of the camera device, wherein the field of view is at least partially illuminated at a first illuminance value, detecting a human face present in the field of view, determining, using the first illuminance value, a depth value of a portion of the human face, determining, using the depth value, a user account associated with a user having the human face, and causing presentation of information associated with the user at the camera device based at least in part on the user account.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: December 3, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Mashhour Solh, Tsz Lok Poon
  • Patent number: 10488923
    Abstract: A gaze detection, identification and control method includes steps of providing a portable electronic device, performing a continuous image capture on a user through an image capture unit of the portable electronic device to sequentially obtain an initial image and a plurality of detected images, detecting and defining a gaze position of the user according to the initial image, identifying a change amount and a change direction of the gaze position of the user according to the detected images, and sending a control command according to the change amount and the change direction. Therefore, the advantages of easy recognition and time-saving are achieved.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: November 26, 2019
    Assignee: COMPAL ELECTRONICS, INC.
    Inventors: Huang-Chih Chen, Yueh-Hsiang Chen, Yu-Cheng Hsu
  • Patent number: 10484548
    Abstract: An operation display system having a hardware processor is disclosed. The hardware processor acquires load references serving as a reference of pressing force by which a touch panel receives an operation. The hardware processor compares the acquired load references with each other. The hardware processor controls a degree of a change in pressing force for pressing a touch panel of a second operation display apparatus to be notified when there is a difference as a comparison result of load references of a first operation display apparatus operated by a user most recently and the second operation display apparatus to be subsequently operated among a plurality of operation display apparatuses.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 19, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Hideaki Shimizu, Yasuaki Sugimoto
  • Patent number: 10482350
    Abstract: A drowsiness detection apparatus is provided. The drowsiness detection apparatus: an image capturing unit, an alarm apparatus, and a drowsiness determination circuit. The image capturing unit is configured to repeatedly capture a plurality of facial images of a user. The drowsiness determination circuit is configured to obtain an eye region from a current image of the facial images, calculate a vertical histogram of the eye region, and determine an eye part from the eye region according to the vertical histogram. The drowsiness determination circuit further compares the pixel height of the eye part with a closed-eye pixel threshold to perform closed-eye detection, and performs drowsiness detection on the user according to the results of the closed-eye detection. When the result of the drowsiness detection indicates that the user is drowsy, the drowsiness determination circuit transmits a control signal to the alarm apparatus to sound an alarm.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: November 19, 2019
    Assignee: Wistron Corp.
    Inventors: Zhen-Te Liu, Yu-Yen Chen
  • Patent number: 10463250
    Abstract: A system for testing the vision of a subject is disclosed herein. The system includes a motion sensing device, the motion sensing device configured to measure a velocity of a head of a subject; a visual display device having an output screen, the visual display device configured to display one or more visual objects on the output screen so that the one or more visual objects are visible to the subject; and a data processing device, the data processing device operatively coupled to the motion sensing device and the visual display device, the data processing device being specially programmed to carry out the steps of the vision tests during which the subject's head undergoes an impulse displacement. A method for the testing the vision of a subject is also disclosed herein.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: November 5, 2019
    Assignee: Bertec Corporation
    Inventors: Necip Berme, Jan Jakub Ober
  • Patent number: 10459520
    Abstract: Methods and systems to facilitate eye tracking control are provided. A user input is received at a computing device. Point of regard information associated with a user of the computing device is determined while the user input is being received. The point of regard information indicates a location on a display of the computing device at which the user is looking. An operation associated with a display object identified based on the point of regard information is performed when receipt of the user input is determined to have terminated.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: October 29, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Javier San Agustin Lopez, Sebastian Sztuk, Martin Henrik Tall
  • Patent number: 10451881
    Abstract: Systems, devices, and methods for preventing eyebox degradation in wearable heads-up displays (“WHUDs”) are described. A WHUD may provide an eyebox defined by multiple spatially-separated exit pupils, where the size of the eyebox is influenced by the spacing between the exit pupils. A larger eyebox is achieved with larger spacing between the exit pupils but a larger spacing between exit pupils is susceptible to the formation of gaps or blind spots in the eyebox (eyebox degradation) if bright environmental light causes the user's pupil to constrict to a size that is smaller than the spacing between the exit pupils. A material of variable chromism is included in the user's field of view to reduce the perceived brightness of environmental light and thereby prevent the user's pupil from constricting to a size smaller than the spacing between the exit pupils.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 22, 2019
    Assignee: North Inc.
    Inventor: Matthew Bailey
  • Patent number: 10448825
    Abstract: A device for measuring eye movement in a human subject, the device having a housing, at least one stimulator mounted to the housing, and a sensor. The at least one stimulator is configured to provide stimulus to one or both eyes of the subject. The sensor is configured to collect information related to movement of one or both eyes of the subject. The device also includes a user interface that is configured to control the at least one stimulator and display information collected by the camera.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: October 22, 2019
    Assignee: MUSC FOUNDATION FOR RESEARCH DEVELOPMENT
    Inventors: Nancey Trevanian Tsai, Mark Evald Semler
  • Patent number: 10437330
    Abstract: A gaze detection, identification and control method includes steps of providing a portable electronic device, performing a continuous image capture on a user through an image capture unit of the portable electronic device to sequentially obtain an initial image and a plurality of detected images, detecting and defining a gaze position of the user according to the initial image, identifying a change amount and a change direction of the gaze position of the user according to the detected images, and sending a control command according to the change amount and the change direction. Therefore, the advantages of easy recognition and time-saving are achieved.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 8, 2019
    Assignee: COMPAL ELECTRONICS, INC.
    Inventors: Huang-Chih Chen, Yueh-Hsiang Chen, Yu-Cheng Hsu
  • Patent number: 10433916
    Abstract: System and method for determining the position and orientation (P&O) of a tool-tip relative to an eye tissue of interest. The system includes and imaging and tracking module coupled with a processor. The imaging and tracking module at least includes an imager. The imager acquires at least one image of at least one tissue-reference-marker. The imaging and tracking module further determines information relating to the P&O of the tool. The processor determines the P&O of the tissue-reference-marker according to the acquired image of the tissue-reference-marker. The processor determines the P&O of the eye tissue of interest, according to the P&O of the tissue-reference-marker, and a predetermined relative P&O between the tissue-reference-marker and the eye tissue of interest. The processor also determines the P&O of a tool-tip according to a tool-marker and determines the relative P&O between the tool-tip and the eye tissue of interest.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 8, 2019
    Assignee: Elbit Systems Ltd.
    Inventors: Ron Schneider, Abraham Zeitouny, Einav Namer Yelin
  • Patent number: 10433724
    Abstract: The invention relates to a method and an apparatus for determining the location of at least two optical parameters of an eye of a test person. In the method, at least two optical parameters of an eye having a reference structure are photographically recorded to determine in each case one of the optical parameters of the eye. The apparatus for determining at least two optical parameters of an eye having a reference structure is provided with separate recording units for photographically recording the eye for the determination of in each case one of the optical parameters of the eye.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: October 8, 2019
    Assignee: Carl Zeiss Vision GmbH
    Inventors: Timo Kratzer, Jesus-Miguel Cabeza-Guillen, Gerhard Kelch
  • Patent number: 10420465
    Abstract: Various conditions, such as traumatic brain injuries (TBI), diseases, injuries, and/or other impairments, may be diagnosed by deriving a sensitive overall indicator of impairment of sensorimotor functional status based on results of an eye-movement assessment test that includes an appropriately randomized, radial tracking task together with a broad set of oculometric measures. The oculometric measures may be combined to yield the sensitive overall indicator of a particular impairment state. More specifically, the oculometric measures may be vectorized to help diagnose both the type of TBI, disease, or impairment and the extent thereof.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: September 24, 2019
    Assignee: United States of America as Represented by the Administrator of NASA
    Inventors: Leland S. Stone, Dorion B. Liston
  • Patent number: 10416477
    Abstract: Techniques and mechanisms for determining an amount of accommodation for an ophthalmic system are described. In an embodiment, the ophthalmic system includes a first circuit and a second circuit, each comprising a respective photodiode. The second circuit is configured to provide a light response profile that is more linear than a light response profile provided by the first circuit. Light sensing by the first circuit results in generation of a first signal indicating a level of ambient light in a surrounding environment. Other light sensing by the second circuit results in a second signal being generated. An amount of accommodation is determined based at least in part on the second signal.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: September 17, 2019
    Assignee: Verily Life Sciences LLC
    Inventors: Robert F. Wiser, Jennifer Han, Brian Otis, Nathan Pletcher
  • Patent number: 10409057
    Abstract: Systems, devices, and methods that use elements of a scanning laser projector (“SLP”) to determine the gaze direction of a user of a wearable heads-up display (“WHUD”) are described. An infrared laser diode is added to an RGB SLP and an infrared photodetector is aligned to detect reflections of the infrared light from the eye. A scan mirror in the SLP sweeps through a range of orientations and the intensities of reflections of the infrared light are monitored by a processor to determine when a spectral reflection or “glint” is produced. The processor determines the orientation of the scan mirror that produced the glint and maps the scan mirror orientation to a region in the field of view of the eye of the user, such as a region in visible display content projected by the WHUD, to determine the gaze direction of the user.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 10, 2019
    Assignee: NORTH INC.
    Inventors: Idris S. Aleem, Mayank Bhargava
  • Patent number: 10398312
    Abstract: Frequency-based mode mixing may be used to homogenize different modes in an optical fiber used for surgical illumination. A laser modulator may introduce frequency modulation to laser light to generate a homogeneous illumination field due to increased mode mixing in the optical fiber.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: September 3, 2019
    Assignee: Novartis AG
    Inventors: Cesario Dos Santos, Gerald David Bacher, Ronald Smith, Alireza Mirsepassi, Michael Papac
  • Patent number: 10394321
    Abstract: An information acquiring apparatus method, an information acquiring apparatus, and a user equipment are provided. A method comprises: acquiring, in response to that an eye of a user in a motion state is in a smooth pursuit eye movement state, information about a change of an angle of a line-of-sight direction of the user relative to a gaze point of the user at a moment, and information about motion of the user relative to the gaze point at the moment; and acquiring, according to the angle change information and the motion information, information about a distance of the gaze point relative to the user at the moment. In this regard, a position of an object of interest of a user in a motion state can be conveniently determined by tracing an eye of the user.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 27, 2019
    Assignee: BEIJING ZHIGU RUI TUO TECH CO., LTD
    Inventors: Dayong Ding, Kuifei Yu
  • Patent number: 10394019
    Abstract: A method for determining eye openness with an eye tracking device is disclosed. The method may include determining, for pixels of an image sensor of an eye tracking device, during a first time period when an eye of a user is open, a first sum of intensity of the pixels. The method may also include determining, during a second time period when the eye of the user is closed, a second sum of intensity of the pixels. The method may further include determining, during a third time period, a third sum of intensity of the pixels. The method may additionally include determining that upon the third sum exceeding a fourth sum of the first sum plus a threshold amount, that the eye of the user is closed, the threshold amount is equal to a product of a threshold fraction and a difference between the first sum and the second sum.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: August 27, 2019
    Assignee: Tobii AB
    Inventors: Mark Ryan, Torbjörn Sundberg, Pravin Rana, Yimu Wang
  • Patent number: 10386923
    Abstract: Embodiments of the present invention are directed to a method, computer system, and computer program product for biometric-enhanced virtual reality experience modification. One or more ocular scans of a user are conducted using a sensor, wherein at least one scan within the one or more conducted ocular scans is a pupil scan. A plurality of pupillometry data is associated with the user based on the one or more conducted ocular scans. A plurality of user information is inferred by the plurality of gathered pupillometry data. The virtual environment is modified based on the plurality of inferred information.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: August 20, 2019
    Assignee: International Business Machines Corporation
    Inventors: Nixon Cheaz, Anthony M. Diaz, Michael E. Head, Jordana H. Kerr
  • Patent number: 10382746
    Abstract: Head-worn displays are disclosed. A head-worn display may include at least one processor configured to determine a location of the head-worn display with respect to a real-world environment and to generate a conformal indicator conforming to an element in the real-world environment. The at least one processor may also be configured to generate a non-conformal indicator unconstrained by elements in the real-world environment. The head-worn display may include at least one display in communication with the at least one processor. The at least one display may be configured to display the conformal indicator and/or the non-conformal indicator generated by the at least one processor to a user.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: August 13, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Geoffrey A. Shapiro, Christopher L. George, Timothy J. Wittkop, Steven E. Koenck
  • Patent number: 10365714
    Abstract: A method of presenting content to a subject based on eye position measurements includes presenting the subject with content. While presenting the content to the subject, one or more of the subject's eye positions is measured. The method includes continuously performing the operations of: generating an attention metric using the one or more measured eye positions; based on the attention metric, determining an attention state of the subject; and determining a trajectory of the one or more eye positions. In accordance with detecting a change in the attention state of the subject, the presentation of the content is modified based on the trajectory of the one or more eye positions so as to present different content than if the attention state of the subject had remained the not attending state.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: July 30, 2019
    Assignee: SYNC-THINK, INC.
    Inventor: Jamshid Ghajar
  • Patent number: 10357318
    Abstract: System and method for determining the position and orientation (P&O) of a tool-tip relative to an eye tissue of interest. The system includes and imaging and tracking module coupled with a processor. The imaging and tracking module at least includes an imager. The imager acquires at least one image of at least one tissue-reference-marker. The imaging and tracking module further determines information relating to the P&O of the tool. The processor determines the P&O of the tissue-reference-marker according to the acquired image of the tissue-reference-marker. The processor determines the P&O of the eye tissue of interest, according to the P&O of the tissue-reference-marker, and a predetermined relative P&O between the tissue-reference-marker and the eye tissue of interest. The processor also determines the P&O of a tool-tip according to a tool-marker and determines the relative P&O between the tool-tip and the eye tissue of interest.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: July 23, 2019
    Assignee: Elbit Systems Ltd.
    Inventors: Ron Schneider, Abraham Zeitouny, Einav Namer Yelin
  • Patent number: 10354164
    Abstract: Receiving an iris image; detecting, among rows of the iris image, rows in each of which a number of consecutive pixels each having a brightness value above a first threshold value is larger than a second threshold value; detecting, among columns of the iris image, columns in each of which a number of consecutive pixels each having a brightness value above the first threshold value is larger than the second threshold value; selecting, among the detected rows, consecutive rows in a vertical direction whose number is larger than a third threshold; selecting, among the detected columns, consecutive columns in a horizontal direction whose number is larger than the third threshold and determining a set of the pixels as a glint if the set of pixels included in the selected rows and the selected columns and each having the brightness value above the first threshold has a predetermined shape.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: July 16, 2019
    Assignee: 3E CO., LTD.
    Inventor: MinHo Kim
  • Patent number: 10346985
    Abstract: Systems, devices, media, and methods are presented for gaze-based control of device operations. One method includes receiving a video stream from an imaging device, the video stream depicting one or more eyes, determining a gaze direction for the one or more eyes depicted in the video stream, detecting a change in the gaze direction of the one or more eyes, and triggering an operation in a client device based on the change in the gaze direction.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 9, 2019
    Assignee: Snap Inc.
    Inventor: Fedir Poliakov
  • Patent number: 10346601
    Abstract: A method for a device to acquire biometric information includes acquiring a plurality of images including an ocular region using an infrared ray (IR) image sensor, detecting a sclera region in each of the plurality of acquired images, sensing a change of the detected sclera region, and determining biometric information based on information on the sensed change of the sclera region.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: July 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: In-kuk Yun, Je-in Yu, Dae-kwang Jung, Jun-ho Koh, Byeong-hoon Kwak, Sung-chan Kim, Chang-han Kim, Hyun-jung Kim, In-hak Na, Kang-jin Yoon, Yong-chan Lee
  • Patent number: 10324529
    Abstract: An image of an eye of a user from an image sensor can be received, the image resulting from the image sensor detecting light from one or more illuminators reflected from the eye of the user. A glint is identified in the image as a representation in the image of a reflection of light from a cornea of the eye of the user or from a sclera of the eye of the user. A first pixel intensity of the glint is determined, a second pixel intensity of neighbor pixels of the glint is determined, and an absolute value of the difference between the first pixel intensity and the second pixel intensity is determined. The glint is identified as a representation of a reflection from the sclera of the eye of the user on condition that the determined absolute value of the difference is below a predetermine threshold value.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: June 18, 2019
    Assignee: Tobii AB
    Inventors: Pravin Kumar Rana, Yimu Wang