Patents by Inventor Lloyd Frederick Holland

Lloyd Frederick Holland has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200082790
    Abstract: Systems, devices, and methods for detecting ambient light with wearable heads-up displays are described. An ambient light sensor can be positioned close to a user's eye area on a user-side of a wearable heads-up display. By positioning the ambient light sensor on a user-side of the wearable heads up display, the ambient light sensor can be in a position and/or orientation which receives ambient light in a similar manner a user's eye, and thus ambient light detection can be more accurate. Brightness of display light output by the wearable heads-up display can be adjusted in response to the detected brightness of ambient light.
    Type: Application
    Filed: September 12, 2019
    Publication date: March 12, 2020
    Inventors: Joshua Moore, Lloyd Frederick Holland, Jonathan Blake Huras, Charles Eiric Johnstone, Jiwon Yang, Victor Emile Isbrucker
  • Patent number: 10534182
    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: September 10, 2018
    Date of Patent: January 14, 2020
    Assignee: North Inc.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10488662
    Abstract: Systems, articles, and methods that integrate photopolymer film with eyeglass lenses are described. One or more hologram(s) may be recorded into/onto the photopolymer film to enable the lens to be used as a transparent holographic combiner in a wearable heads-up display employing an image source, such as a microdisplay or a scanning laser projector. The methods of integrating photopolymer film with eyeglass lenses include: positioning photopolymer film in a lens mold and casting the lens around the photopolymer film; sandwiching photopolymer film in between two portions of a lens; applying photopolymer film to a concave surface of a lens; and/or affixing a planar carrier (with photopolymer film thereon) to two points across a length of a concave surface of a lens. Respective lenses manufactured/adapted by each of these processes are also described.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: November 26, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Matthew Bailey
  • Patent number: 10488661
    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: November 26, 2019
    Assignee: North Inc.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Patent number: 10437073
    Abstract: Systems, devices, and methods for beam combining within laser projectors are described. A laser projector includes first, second, and third laser diodes to generate red, green, and blue laser light respectively, a controllable scan mirror, and a heterogeneous beam splitter system. The red, green, and blue laser light have distinct maximum powers. The heterogeneous beam splitter system splits at least one of the red, green, and blue laser light and combines respective first portions of all three into an aggregate beam. Second portions of laser light are excluded from the aggregate beam. At the maximum power of each laser light the aggregate beam is white as defined by a target white point. The heterogeneous beam splitter system directs the aggregate beam towards the controllable scan mirror which scans the beam onto a projection surface. Decreasing the power of the laser light post-generation provides a larger range of aggregate beam colors.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 8, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Joshua Moore
  • Patent number: 10437074
    Abstract: Systems, devices, and methods for beam combining within laser projectors are described. A laser projector includes first, second, and third laser diodes to generate red, green, and blue laser light respectively, a controllable scan mirror, and a heterogeneous beam splitter system. The red, green, and blue laser light have distinct maximum powers. The heterogeneous beam splitter system splits at least one of the red, green, and blue laser light and combines respective first portions of all three into an aggregate beam. Second portions of laser light are excluded from the aggregate beam. At the maximum power of each laser light the aggregate beam is white as defined by a target white point. The heterogeneous beam splitter system directs the aggregate beam towards the controllable scan mirror which scans the beam onto a projection surface. Decreasing the power of the laser light post-generation provides a larger range of aggregate beam colors.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 8, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Joshua Moore
  • Patent number: 10429655
    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: September 10, 2018
    Date of Patent: October 1, 2019
    Assignee: North Inc.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Publication number: 20190265487
    Abstract: Systems, devices, and methods for wearable heads-up displays (WHUD) are described. A WHUD includes a front frame with two openings each with one recess which extends along at least a portion of the periphery of the openings, two arms including frame portions and temple portions, two lenses, a projector to generate light, and a holographic optical element (HOE) carried by a lens to redirect light to an eye of a user. Frame portions insert into the recesses and are held in place when the lenses are inserted into the recesses, wherein when the WHUD is assembled the projector and HOE are positioned correctly to create a display for the user. The assembled WHUD is inflexible where the front frame and arms are attached such that when worn the projector maintains a fixed position relative to the HOE and the display remains undistorted and visible to the user.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Lloyd Frederick Holland, Joshua Moore, Stephen E. Orzel
  • Patent number: 10365549
    Abstract: Systems, devices, and methods for focusing laser projectors are described. A laser projector includes N?1 laser diodes, each of which emits laser light having a divergence. Each laser diode is paired with a respective primary or collimation lens to at least reduce a divergence of the laser light that the laser diode produces. Downstream from the primary lens(es) in the optical path(s) of the laser light, a single dedicated secondary or convergence lens converges the laser light to a focus. By initiating the convergence of the laser light at the secondary or convergence lens as opposed to at the primary or collimation lens(es), numerous benefits that are particularly advantageous in laser projection-based wearable heads-up displays are realized.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 30, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Vance R. Morrison
  • Patent number: 10365548
    Abstract: Systems, devices, and methods for focusing laser projectors are described. A laser projector includes N?1 laser diodes, each of which emits laser light having a divergence. Each laser diode is paired with a respective primary or collimation lens to at least reduce a divergence of the laser light that the laser diode produces. Downstream from the primary lens(es) in the optical path(s) of the laser light, a single dedicated secondary or convergence lens converges the laser light to a focus. By initiating the convergence of the laser light at the secondary or convergence lens as opposed to at the primary or collimation lens(es), numerous benefits that are particularly advantageous in laser projection-based wearable heads-up displays are realized.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 30, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Vance R. Morrison
  • Patent number: 10365492
    Abstract: Systems, devices, and methods for beam combining are described. A monolithic beam combiner includes a solid volume of optically transparent material having two orthogonally positioned planar input surfaces, an output surface, and at least two planar dichroic reflectors positioned within the solid volume. Multiple light sources input light into the solid volume through the two planar input surfaces such that each light beam from a respective source is initially incident on one of the planar dichroic reflectors. The light is reflected by and transmitted through the reflectors and an aggregate beam is created. Because the reflectors are within an optically transparent material the beam combiner can be made more compact than a conventional beam combiner. This monolithic beam combiner is particularly well suited for use laser projectors and in wearable heads-up displays that employ laser projectors.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: July 30, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Joshua Moore
  • Patent number: 10365550
    Abstract: Systems, devices, and methods for focusing laser projectors are described. A laser projector includes N?1 laser diodes, each of which emits laser light having a divergence. Each laser diode is paired with a respective primary or collimation lens to at least reduce a divergence of the laser light that the laser diode produces. Downstream from the primary lens(es) in the optical path(s) of the laser light, a single dedicated secondary or convergence lens converges the laser light to a focus. By initiating the convergence of the laser light at the secondary or convergence lens as opposed to at the primary or collimation lens(es), numerous benefits that are particularly advantageous in laser projection-based wearable heads-up displays are realized.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 30, 2019
    Assignee: North Inc.
    Inventors: Lloyd Frederick Holland, Vance R. Morrison
  • Patent number: 10274736
    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: May 4, 2018
    Date of Patent: April 30, 2019
    Assignee: North Inc.
    Inventors: Stefan Alexander, Matthew Bailey, Vance R. Morrison, Lloyd Frederick Holland, Joshua Moore
  • Publication number: 20190056595
    Abstract: A holographic optical element includes a set of holograms formed in one or more layers of holographic material. The set of holograms includes a red hologram that is exclusively responsive to a first wavelength of red light incident thereon over a first range of angles of incidence, a green hologram that is exclusively responsive to a second wavelength of green light incident thereon over the first range of angles of incidence, and a blue hologram that is exclusively responsive to a third wavelength of blue light incident thereon over the first range of angles of incidence.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Matthew Bailey, Stefan Alexander, Vance R. Morrison, Thomas Mahon, Lloyd Frederick Holland, Jaehong Choi
  • Publication number: 20190056596
    Abstract: A wearable heads-up display includes a support structure that in use is worn on a head of a user, a scanning laser projector carried by the support structure, and a holographic optical element carried by the support structure. The holographic optical element includes a set of holograms formed in one or more layers of holographic material. The set of holograms includes a red hologram that is exclusively responsive to red laser light incident thereon over a first range of angles of incidence, a green hologram that is exclusively responsive to blue laser light incident thereon over the first range of angles of incidence, and a blue hologram that is exclusively responsive to green laser light incident thereon over the first range of angles of incidence.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Matthew Bailey, Stefan Alexander, Vance R. Morrison, Thomas Mahon, Lloyd Frederick Holland, Jaehong Choi
  • Patent number: 10197805
    Abstract: Systems, devices, and methods for engineering the eyebox of a display using multiple heterogeneous exit pupils are described. The eyebox of a display includes at least two heterogeneous exit pupils that are different from one another in terms of size and/or shape. Heterogeneous exit pupils may overlap, one may encompass another, or they may be completely spatially-separated from one another. Such configurations enable specific eyebox and/or visual display configurations that can be advantageous in certain applications. An example in which a scanning laser-based wearable heads-up virtual retina display implements a holographic combiner that is engineered to provide multiple heterogeneous exit pupils is described.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: February 5, 2019
    Assignee: North Inc.
    Inventors: Matthew Bailey, Stefan Alexander, Vance R. Morrison, Thomas Mahon, Lloyd Frederick Holland, Jaehong Choi
  • Patent number: 10191283
    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 exit pupil selector positioned in the optical path therebetween. The exit pupil selector is controllably switchable into and between N different configurations. In each of the N configurations, the exit pupil selector receives a light signal from the SLP and redirects the light signal towards the holographic combiner effectively from a respective one of N virtual positions for the SLP. The holographic combiner converges the light signal to a particular one of N exit pupils at the eye of the user based on the particular virtual position from which the light signal is made to effectively originate. In this way, multiple instances of the exit pupil are distributed over the eye and the eyebox of the WHUD is expanded.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: January 29, 2019
    Assignee: NORTH INC.
    Inventors: Stefan Alexander, Matthew Bailey, Vance R. Morrison, Lloyd Frederick Holland
  • Patent number: 10180578
    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: January 15, 2019
    Assignee: NORTH INC.
    Inventors: Stefan Alexander, Jake Chapeskie, Lloyd Frederick Holland, Thomas Mahon
  • Publication number: 20190011699
    Abstract: Systems, devices, and methods for reducing bulk and balancing weight in wearable heads-up displays are described. Bulk can be reduced in a wearable heads-up display by positioning a battery in a first arm of the wearable heads-up display and other electronics in a second arm of the wearable heads-up display, thus reducing the amount of extraneous housing that would otherwise be required to house multiple batteries or electronic components in both arms. Weight of a wearable heads-up display can be balanced by selecting appropriately sized and weight electronics in the first arm, and by adjusting size and therefore weight of the battery in the second arm. Densely filling the first arm with electronics can result in the first arm and the second arm having similar weight.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Inventors: Joshua Moore, Lloyd Frederick Holland, Stephen Lake, George Shaker
  • Patent number: 10175488
    Abstract: Systems, devices, and methods for spatial multiplexing in holographic optical elements (“HOEs”) are described. A spatially-multiplexed HOE includes multiple spatially-separated holographic regions and each spatially-separated region applies a respective optical function to light that is incident thereon. An exemplary application as a spatially-multiplexed holographic combiner (“SMHC”) in a scanning laser-based wearable heads-up display (“WHUD”) is described. In this exemplary application, a scanning laser projector directs multiple light signals over the area of the SMHC and the SMHC converges the light signals towards multiple spatially-separated exit pupils at or proximate the eye of the user. The particular exit pupil at the eye of the user towards which any particular light signal is converged by the SMHC depends on the particular region of the SMHC upon which the light signal is incident.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: January 8, 2019
    Assignee: NORTH INC.
    Inventors: Matthew Bailey, Stefan Alexander, Vance R. Morrison, Thomas Mahon, Lloyd Frederick Holland, Jaehong Choi