Patents Assigned to Thalmic Labs Inc.
  • Patent number: 10139633
    Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays 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 features of the eye. A holographic optical element (“HOE”) may be used to combine visible light, infrared light, and environmental light into the user's “field of view.” The HOE may be heterogeneous and multiplexed to apply positive optical power to the visible light and zero or negative optical power to the infrared light.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: November 27, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10133075
    Abstract: Systems, devices, and methods for combined angle- and wavelength multiplexing in holographic optical elements (“HOE”) are described. An angle- and wavelength-multiplexed HOE includes multiple angle-multiplexed sets of wavelength-multiplexed holograms. Each set of wavelength-multiplexed holograms includes at least two holograms that are each responsive to a different wavelength of light. Each angle-multiplexed set of wavelength-multiplexed holograms includes a respective set of wavelength-multiplexed holograms that are all responsive to light that is incident thereon with and angle of incidence that is within a particular range. An example application is described in which an angle- and wavelength-multiplexed HOE is used as a holographic combiner in a wearable heads-up display, where angle-multiplexing provides multiple spatially-separated exit pupils in the eyebox of the display and wavelength-multiplexing provides multiple colors to each respective exit pupil.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: November 20, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Matthew Bailey, Stefan Alexander, Vance R. Morrison, Thomas Mahon, Lloyd Frederick Holland, Jaehong Choi
  • Patent number: 10126815
    Abstract: Systems, devices, and methods for proximity-based eye tracking are described. A proximity sensor positioned near the eye monitors the distance to the eye, which varies depending on the position of the corneal bulge. The corneal bulge protrudes outward from the surface of the eye and so, all other things being equal, a static proximity sensor detects a shorter distance to the eye when the cornea is directed towards the proximity sensor and a longer distance to the eye when the cornea is directed away from the proximity sensor. Optical proximity sensors that operate with infrared light are used as a non-limiting example of proximity sensors. Multiple proximity sensors may be used and processed simultaneously in order to provide a more accurate/precise determination of the gaze direction of the user. Implementations in which proximity-based eye trackers are incorporated into wearable heads-up displays are described.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 13, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Mélodie Vidal, Jake Chapeskie
  • Patent number: 10114222
    Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays 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 features of the eye. A holographic optical element (“HOE”) may be used to combine visible light, infrared light, and environmental light into the user's “field of view.” The HOE may be heterogeneous and multiplexed to apply positive optical power to the visible light and zero or negative optical power to the infrared light.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 30, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10101809
    Abstract: Systems, articles, and methods for improved capacitive electromyography (“EMG”) sensors are described. The improved capacitive EMG sensors include one or more sensor electrode(s) that is/are coated with a protective barrier formed of a material that has a relative permittivity ?r of about 10 or more. The protective barrier shields the sensor electrode(s) from moisture, sweat, skin oils, etc. while advantageously contributing to a large capacitance between the sensor electrode(s) and the user's body. In this way, the improved capacitive EMG sensors provide enhanced robustness against variations in skin and/or environmental conditions. Such improved capacitive EMG sensors are particularly well-suited for use in wearable EMG devices that may be worn by a user for an extended period of time and/or under a variety of skin and/or environmental conditions. A wearable EMG device that provides a component of a human-electronics interface and incorporates such improved capacitive EMG sensors is described.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: October 16, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Cezar Morun, Stephen Lake
  • Patent number: 10078220
    Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. At least one narrow waveband laser diode is used in an SLP to define one or more portion(s) of a visible image. At least one corresponding narrow waveband photodetector is aligned to detect reflections of the portion(s) of the image from features of the eye. A holographic optical element (“HOE”) may be used to combine the image and environmental light into the user's “field of view.” Three narrow waveband photodetectors each responsive to a respective one of three narrow wavebands output by the RGB laser diodes of an RGB SLP are aligned to detect reflections of a projected RGB image from features of the eye.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 18, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10078219
    Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays 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 features of the eye. A holographic optical element (“HOE”) may be used to combine visible light, infrared light, and environmental light into the user's “field of view.” The HOE may be heterogeneous and multiplexed to apply positive optical power to the visible light and zero or negative optical power to the infrared light.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 18, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10078435
    Abstract: Systems, methods, and computer program products for interacting with electronically displayed presentation materials are described. A display system includes, at least, a digital processor, an electronic display, and a non-transitory processor-readable storage medium into which is loaded a computer program product that includes, at least, processor-executable instructions and/or data. The processor-executable instructions and/or data, when executed by the processor, cause the display system to respond to user inputs indicative of pointer commands and magnification setting commands. In response to such commands, the display system causes; i) a dynamic cursor to display over top of content on the electronic display; and ii) a digital copy image of the content to be displayed over top of the content on the electronic display, the digital copy image displayed at a greater magnification level than the content.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: September 18, 2018
    Assignee: THALMIC LABS INC.
    Inventor: Elliott W. G. Noel
  • Patent number: 10073268
    Abstract: Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. At least one narrow waveband laser diode is used in an SLP to define one or more portion(s) of a visible image. At least one corresponding narrow waveband photodetector is aligned to detect reflections of the portion(s) of the image from features of the eye. A holographic optical element (“HOE”) may be used to combine the image and environmental light into the user's “field of view.” Three narrow waveband photodetectors each responsive to a respective one of three narrow wavebands output by the RGB laser diodes of an RGB SLP are aligned to detect reflections of a projected RGB image from features of the eye.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: September 11, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10067337
    Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include a light source that sequentially generates pixels or other discrete portions of an image. Respective modulated light signals corresponding to the respective pixels/portions are sequentially directed towards at least one dynamic reflector positioned on a lens of the transparent display within the user's field of view. The dynamic reflector (such as a MEMS-based digital micromirror) scans the modulated light signals directly over the user's eye and into the user's field of view. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: September 4, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Matthew Bailey, Stefan Alexander
  • Patent number: 10054788
    Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include a light source that sequentially generates pixels or other discrete portions of an image. Respective modulated light signals corresponding to the respective pixels/portions are sequentially directed towards at least one dynamic reflector positioned on a lens of the transparent display within the user's field of view. The dynamic reflector (such as a MEMS-based digital micromirror) scans the modulated light signals directly over the user's eye and into the user's field of view. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: August 21, 2018
    Assignee: Thalmic Labs Inc.
    Inventors: Matthew Bailey, Stefan Alexander
  • Patent number: 10042422
    Abstract: Systems, articles, and methods for improved capacitive electromyography (“EMG”) sensors are described. The improved capacitive EMG sensors include one or more sensor electrode(s) that is/are coated with a protective barrier formed of a material that has a relative permittivity ?r of about 10 or more. The protective barrier shields the sensor electrode(s) from moisture, sweat, skin oils, etc. while advantageously contributing to a large capacitance between the sensor electrode(s) and the user's body. In this way, the improved capacitive EMG sensors provide enhanced robustness against variations in skin and/or environmental conditions. Such improved capacitive EMG sensors are particularly well-suited for use in wearable EMG devices that may be worn by a user for an extended period of time and/or under a variety of skin and/or environmental conditions. A wearable EMG device that provides a component of a human-electronics interface and incorporates such improved capacitive EMG sensors is described.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: August 7, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Cezar Morun, Stephen Lake
  • Patent number: 10031338
    Abstract: Systems, devices, and methods for eyebox expansion by exit pupil replication in scanning laser-based wearable heads-up displays (“WHUDs”) are described. The WHUDs described herein each include a scanning laser projector (“SLP”), a holographic combiner, and an optical replicator positioned in the optical path therebetween. For each light signal generated by the SLP, the optical replicator receives the light signal and redirects each one of N>1 instances of the light signal towards the holographic combiner effectively from a respective one of N spatially-separated virtual positions for the SLP. The holographic combiner converges each one of the N instances of the light signal to a respective one of N spatially-separated exit pupils at the eye of the user. In this way, multiple instances of the exit pupil are distributed over the area of the eye and the eyebox of the WHUD is expanded.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: July 24, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Matthew Bailey, Vance R. Morrison, Lloyd Frederick Holland
  • Patent number: 10012829
    Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include one or more scanning projector(s) that is/are mounted on or proximate the lens portion(s) thereof, directly in the field of view of the user. Each scanning projector includes a respective light source that sequentially generates pixels or other discrete portions of an image and a respective dynamic optical beam-steerer that controllably steers the modulated light directly towards select regions of the eye of the user. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user by projection directly onto the eye of the user from one or more point(s) within the user's field of view.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 3, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Matthew Bailey, Stefan Alexander
  • Patent number: 9989764
    Abstract: Systems, devices, and methods for eyebox expansion by exit pupil replication in wearable heads-up displays (“WHUDs”) are described. A WHUD includes a scanning laser projector (“SLP”), a holographic combiner, and an optical splitter positioned in the optical path therebetween. The optical splitter receives light signals generated by the SLP and separates the light signals into N sub-ranges based on the point of incidence of each light signal at the optical splitter. The optical splitter redirects the light signals corresponding to respective ones of the N sub-ranges towards the holographic combiner effectively from respective ones of N spatially-separated virtual positions for the SLP. The holographic combiner converges the light signals to respective ones of N spatially-separated exit pupils at the eye of the user. In this way, multiple instances of the exit pupil are distributed over the area of the eye and the eyebox of the WHUD is expanded.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: June 5, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Stefan Alexander, Matthew Bailey, Vance R. Morrison, Lloyd Frederick Holland, Joshua Moore
  • Patent number: 9958682
    Abstract: Systems, devices, and methods for optical splitters are described. An optical splitter includes a transparent polygonal structure having an input side to receive light from a light source and an output side that is segmented into multiple facets. Each facet is engineered to provide a respective planar surface that is oriented at a different angle in each of at least two spatial dimensions relative to the other facets in order to refract and route a respective portion of the light along a respective set of optical paths. The input side may be faceted as well to further refine the optical paths. A particular application of the polygonal structure in an optical splitter providing eyebox expansion by exit pupil replication in a scanning laser-based wearable heads-up display is described in detail.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: May 1, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Joshua Moore, Lloyd Frederick Holland
  • Patent number: 9904051
    Abstract: Systems, devices, and methods for laser eye tracking are described. Laser eye tracking involves scanning laser light over the eye and detecting diffuse reflections of the laser light with one or more photodetector(s). While conventional camera-based eye tracking techniques rely on detecting and identifying specific reflections (i.e., Purkinje images such as the “glint”), the laser eye tracking techniques described herein detect and identify a reduction in reflection intensity due to transmission of laser light through the pupil and/or increased diffusivity of reflections from the cornea relative to reflections from the sclera. This effect is referred to herein as the “corneal shadow” effect. Laser eye tracking uses considerably less power than conventional camera-based eye tracking techniques.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: February 27, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Idris S. Aleem, Mélodie Vidal, Jake Chapeskie
  • Patent number: 9880632
    Abstract: Systems, devices, and methods adapt established concepts from natural language processing for use in gesture identification algorithms. A gesture identification system includes sensors, a processor, and a non-transitory processor-readable memory that stores data and/or instructions for performing gesture identification. A gesture identification system may include a wearable gesture identification device. The gesture identification process involves segmenting signals from the sensors into data windows, assigning a respective “window class” to each data window, and identifying a user-performed gesture based on the corresponding sequence of window classes. Each window class exclusively characterizes at least one data window property and is analogous to a “letter” of an alphabet. Under this model, each gesture is analogous to a “word” made up of a particular combination of window classes.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: January 30, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Pedram Ataee, Idris S. Aleem
  • Patent number: 9874744
    Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include one or more scanning projector(s) that is/are mounted on or proximate the lens portion(s) thereof, directly in the field of view of the user. Each scanning projector includes a respective light source that sequentially generates pixels or other discrete portions of an image and a respective dynamic optical beam-steerer that controllably steers the modulated light directly towards select regions of the eye of the user. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user by projection directly onto the eye of the user from one or more point(s) within the user's field of view.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: January 23, 2018
    Assignee: THALMIC LABS INC.
    Inventors: Matthew Bailey, Stefan Alexander
  • Patent number: 9807221
    Abstract: Systems, devices, and methods that are effected in or by an electronic device in response to establishing and/or terminating a physical communications link are described. An electronic device may be entered into deep sleep and may include a power control circuit that activates the device out of deep sleep in response to establishing a physical communications link with a source of electric power, such as another electronic device. Either in combination with or separate from this, an electronic device may establish wireless communications with another electronic device in response to establishing and terminating a physical communications link with the other electronic device. The physical communications link may be used to transfer device identity data from one device to the other and thereby bypass the cumbersome “discovery” process common to conventional wireless communication techniques. Portable electronic devices and personal computing devices that are operative to perform the above are described.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: October 31, 2017
    Assignee: Thalmic Labs Inc.
    Inventors: Matthew Bailey, Aaron Grant, Eric Philippe Bouchard