Patents by Inventor Graham B. Myhre

Graham B. Myhre 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).

  • Patent number: 10852553
    Abstract: A lens module in a head-mounted device may include a fluid-filled chamber, a semi-rigid lens element that at least partially defines the fluid-filled chamber, and at least one actuator configured to selectively bend the semi-rigid lens element. The semi-rigid lens element may become rigid along a first axis when the lens element is curved along a second axis perpendicular to the first axis. Six actuators that are evenly distributed around the periphery of the semi-rigid lens element may be used to control the curvature of the semi-rigid lens element. The semi-rigid lens element may initially be planar or non-planar. For example, the semi-rigid lens element may initially have a spherically convex surface and a spherically concave surface. A tunable spherical lens may be incorporated into the lens module to offset a parasitic spherical lens power from the semi-rigid lens element.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: December 1, 2020
    Assignee: Apple Inc.
    Inventors: James E. Pedder, Igor Stamenov, Cheng Chen, Enkhamgalan Dorjgotov, Graham B. Myhre, Victoria C. Chan, Xiaonan Wen, Peng Lv, Yuan Li, Yu Horie, Siddharth S. Hazra
  • Publication number: 20200272022
    Abstract: An electronic device such as a head-mounted device may have displays that are viewable by the eyes of a viewer through adjustable lenses. The adjustable lenses may be liquid crystal lenses. A camera and other sensors in the head-mounted device may monitor the eyes of the user and gather other information. Control circuitry in the head-mounted device may control the adjustable lenses based on measured characteristics of the eyes of the user such as interpupillary distance and direction-of-view. The control circuitry may match the distance between the centers of the adjustable lenses to the measured interpupillary distance and may align the lens centers with the measured direction-of-view. The adjustable lenses may have transparent electrodes that are supplied with time-varying control signals by the control circuitry.
    Type: Application
    Filed: May 13, 2020
    Publication date: August 27, 2020
    Inventors: Graham B. Myhre, Giovanni Carbone, Shih-Chyuan Fan Jiang, Sheng Zhang, Chaohao Wang
  • Patent number: 10690991
    Abstract: An electronic device such as a head-mounted device may have displays that are viewable by the eyes of a viewer through adjustable lenses. The adjustable lenses may be liquid crystal lenses. A camera and other sensors in the head-mounted device may monitor the eyes of the user and gather other information. Control circuitry in the head-mounted device may control the adjustable lenses based on measured characteristics of the eyes of the user such as interpupillary distance and direction-of-view. The control circuitry may match the distance between the centers of the adjustable lenses to the measured interpupillary distance and may align the lens centers with the measured direction-of-view. The adjustable lenses may have transparent electrodes that are supplied with time-varying control signals by the control circuitry.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: June 23, 2020
    Assignee: Apple Inc.
    Inventors: Graham B. Myhre, Giovanni Carbone, Shih-Chyuan Fan Jiang, Sheng Zhang, Chaohao Wang
  • Publication number: 20200174284
    Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have displays that produce images. Positioners may be used to move the displays relative to the eye positions of a user's eyes. An adjustable optical system may include tunable lenses such as tunable cylindrical liquid crystal lenses. The displays may be viewed through the lenses when the user's eyes are at the eye positions. A sensor may be incorporated into the head-mounted display to measure refractive errors in the user's eyes. The sensor may include waveguides and volume holograms, and a camera for gathering light that has reflected from the retinas of the user's eyes. Viewing comfort may be enhanced by adjusting display positions relative to the eye positions and/or by adjusting lens settings based on the content being presented on the display and/or measured refractive errors.
    Type: Application
    Filed: May 3, 2018
    Publication date: June 4, 2020
    Inventors: Victoria C. Chan, Christina G. Gambacorta, Graham B. Myhre, Hyungryul Choi, Nan Zhu, Phil M. Hobson, William W. Sprague, Edward A. Valko, Qiong Huang, Branko Petljanski, Paul V. Johnson, Brandon E. Clarke, Elijah H. Kleeman
  • Publication number: 20200166738
    Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have a pixel array that produces light associated with images. The display system may also have a linear polarizer through which light from the pixel array passes and a quarter wave plate through which the light passes after passing through the quarter wave plate. The optical system may be a catadioptric optical system having one or more lens elements. The lens elements may include a plano-convex lens and a plano-concave lens. A partially reflective mirror may be formed on a convex surface of the plano-convex lens. A reflective polarizer may be formed on the planar surface of the plano-convex lens or the concave surface of the plano-concave lens. An additional quarter wave plate may be located between the reflective polarizer and the partially reflective mirror.
    Type: Application
    Filed: January 30, 2020
    Publication date: May 28, 2020
    Inventors: Sajjad A. Khan, Nan Zhu, Graham B. Myhre, Brent J. Bollman, Tyler Anderson, Weibo Cheng, John N. Border
  • Publication number: 20200098335
    Abstract: A head-mounted device may include a display that generates content and an optical system through which the content is viewable. The head-mounted device may include a lighting system that illuminates a periphery of the optical system. When the user places the device on his or her head in a brightly lit environment, control circuitry may operate the lighting system to provide bright illumination to the user's peripheral vision. The lighting system may gradually decrease in brightness until the user transitions from a bright-adapted state to a dark-adapted state. When the user is partially or fully dark-adapted, the lighting system may be turned off and the display may be turned on. In some arrangements, an ambient light sensor may measure ambient light conditions outside of the electronic device and the control circuitry may control the lighting system based on the ambient lighting conditions.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 26, 2020
    Inventors: Cheng Chen, Nicolas P. Bonnier, Graham B. Myhre, Jiaying Wu
  • Publication number: 20200096771
    Abstract: An electronic device may include a display that produce images. The display may generate light for an optical system that redirects the light towards an eye box. The optical system may include a waveguide that propagates the light in a first direction towards the output coupler. The output coupler may couple the light out of the waveguide towards the eye box while inverting a parity of the light about the first direction. The coupler may include a first element such as a set of partial mirrors or diffractive gratings that redirects a first portion of the light in a second direction. The coupler may include a second element that redirects a second portion of the light in a third direction opposite the second direction. The first element may redirect the second portion and the second element may redirect the first portion towards the eye box.
    Type: Application
    Filed: August 13, 2019
    Publication date: March 26, 2020
    Inventors: Se Baek Oh, Bradley C. Steele, Byron R. Cocilovo, Francesco Aieta, Graham B. Myhre
  • Publication number: 20200096770
    Abstract: A lens module in a head-mounted device may include a fluid-filled chamber, a semi-rigid lens element that at least partially defines the fluid-filled chamber, and at least one actuator configured to selectively bend the semi-rigid lens element. The semi-rigid lens element may become rigid along a first axis when the lens element is curved along a second axis perpendicular to the first axis. Six actuators that are evenly distributed around the periphery of the semi-rigid lens element may be used to control the curvature of the semi-rigid lens element. The semi-rigid lens element may initially be planar or non-planar. For example, the semi-rigid lens element may initially have a spherically convex surface and a spherically concave surface. A tunable spherical lens may be incorporated into the lens module to offset a parasitic spherical lens power from the semi-rigid lens element.
    Type: Application
    Filed: July 23, 2019
    Publication date: March 26, 2020
    Inventors: James E. Pedder, Igor Stamenov, Cheng Chen, Enkhamgalan Dorjgotov, Graham B. Myhre, Victoria C. Chan, Xiaonan Wen, Peng Lv, Yuan Li, Yu Horie, Siddharth S. Hazra
  • Publication number: 20200089014
    Abstract: An electronic device may have a display that emits image light, a waveguide, and an input coupler that couples the image light into the waveguide. Beam splitter structures may be embedded within the waveguide. The beam splitter structures may partially reflect the image light multiple times and may serve to generate replicated beams of light that are coupled out of the waveguide by an output coupler. The beam splitter structures may replicate the beams across two dimensions to provide an eye box with uniform-intensity light from the display across its area. The beam splitter structures may include stacked partially reflective beam splitter layers, sandwiched transparent substrate layers having different indices of refraction, a thick volume hologram interposed between substrate layers, or combinations of these or other structures. The reflectivity of the beam splitter structures may vary discretely or continuously across the lateral area of the waveguide.
    Type: Application
    Filed: August 20, 2019
    Publication date: March 19, 2020
    Inventors: Guolin Peng, Eric J. Hansotte, Francesco Aieta, Graham B. Myhre, Hyungryul Choi, Nan Zhu, Paul J. Gelsinger-Austin, Se Baek Oh, Scott M. DeLapp, Bradley C. Steele
  • Patent number: 10591707
    Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have a pixel array that produces light associated with images. The display system may also have a linear polarizer through which light from the pixel array passes and a quarter wave plate through which the light passes after passing through the quarter wave plate. The optical system may be a catadioptric optical system having one or more lens elements. The lens elements may include a plano-convex lens and a plano-concave lens. A partially reflective mirror may be formed on a convex surface of the plano-convex lens. A reflective polarizer may be formed on the planar surface of the plano-convex lens or the concave surface of the plano-concave lens. An additional quarter wave plate may be located between the reflective polarizer and the partially reflective mirror.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 17, 2020
    Assignee: Apple Inc.
    Inventors: Sajjad A. Khan, Nan Zhu, Graham B. Myhre, Brent J. Bollman, Tyler Anderson, Weibo Cheng, John N. Border
  • Publication number: 20200066815
    Abstract: An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have a steep sidewall, a sidewall with an undercut, or a sidewall surface with a plurality of curves to disrupt continuity of the OLED layers. A control gate that is coupled to a bias voltage and covered by gate dielectric may be used to form an organic thin-film transistor that shuts the leakage current channel between adjacent anodes on the display.
    Type: Application
    Filed: April 27, 2018
    Publication date: February 27, 2020
    Inventors: Jaein Choi, Andrew Lin, Cheuk Chi Lo, Chun-Yao Huang, Gloria Wong, Hairong Tang, Hitoshi Yamamoto, James E. Pedder, KiBeom Kim, Kwang Ohk Cheon, Lei Yuan, Michael Slootsky, Rui Liu, Steven E. Molesa, Sunggu Kang, Wendi Chang, Chun-Ming Tang, Cheng Chen, Ivan Knez, Enkhamgalan Dorjgotov, Giovanni Carbone, Graham B. Myhre, Jungmin Lee
  • Publication number: 20190377181
    Abstract: An electronic device may include a display system for presenting images close to a user's eyes. The display system may include a display unit that directs light and an optical system that redirects the light from the display unit towards a user's eyes. The optical system may include an input coupler and an output coupler formed on a waveguide. The input coupler may redirect light from the display unit so that it propagates in the waveguide towards the output coupler. The output coupler may redirect the light from the input coupler so that it exits the waveguide towards the user's eyes. A light-redirecting element may be used to redirect edge light that would otherwise be outside of the user's field of view towards the user's eyes.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 12, 2019
    Inventors: Graham B. Myhre, Eric J. Hansotte, Guolin Peng, Hyungryul Choi, Se Baek Oh, Paul Gelsinger-Austin
  • Publication number: 20190317659
    Abstract: An electronic device may include a display for displaying image content to a user and dynamic image stabilization circuitry for dynamically compensating the image content if the device is moving unpredictably to help keep the image content aligned with the user's gaze. The electronic device may include sensors for detecting the displacement of the device. The dynamic image stabilization circuitry may include a usage scenario detection circuit and a content displacement compensation calculation circuit. The usage scenario detection circuit receives data from the sensors and infers a usage scenario based on the sensor data. The content displacement compensation calculation circuit uses the inferred usage scenario to compute a displacement amount by which to adjust image content. When motion stops, the image content may gradually drift back to the center of the display.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 17, 2019
    Inventors: Paul V. Johnson, Ahmad Rahmati, Chaohao Wang, Cheng Chen, Graham B. Myhre, Jiaying Wu, Paolo Sacchetto, Sheng Zhang, Yunhui Hou, Xiaokai Li, Tim H. Cornelissen
  • Publication number: 20190172399
    Abstract: An electronic device such as a head-mounted device may have displays. The display may have regions of lower (L) and higher (M, H) resolution to reduce data bandwidth and power consumption for the display while preserving satisfactory image quality. Data lines may be shared by lower and higher resolution portions of a display or different portions of a display with different resolutions may be supplied with different numbers of data lines. Data line length may be varied in transition regions between lower resolution and higher resolution portions of a display to reduce visible discontinuities between the lower and higher resolution portions. The lower and higher resolution portions of the display may be dynamically adjusted using dynamically adjustable gate driver circuitry and dynamically adjustable data line driver circuitry.
    Type: Application
    Filed: August 14, 2017
    Publication date: June 6, 2019
    Inventors: Cheng Chen, Jason C. Sauers, Fletcher R. Rothkopf, David W. Lum, Chun-Yao Huang, Enkhamgalan Dorjgotov, Graham B. Myhre, Bennett S. Wilburn, Paolo Sacchetto, Shih Chang Chang, Wonjae Choi, Cheuk Chi Lo
  • Publication number: 20190146198
    Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have a pixel array that produces light associated with images. The display system may also have a linear polarizer through which light from the pixel array passes and a quarter wave plate through which the light passes after passing through the quarter wave plate. The optical system may be a catadioptric optical system having one or more lens elements. The lens elements may include a plano-convex lens and a plano-concave lens. A partially reflective mirror may be formed on a convex surface of the plano-convex lens. A reflective polarizer may be formed on the planar surface of the plano-convex lens or the concave surface of the plano-concave lens. An additional quarter wave plate may be located between the reflective polarizer and the partially reflective mirror.
    Type: Application
    Filed: December 18, 2018
    Publication date: May 16, 2019
    Inventors: Sajjad A. Khan, Nan Zhu, Graham B. Myhre, Brent J. Bollman, Tyler Anderson, Weibo Cheng, John N. Border
  • Publication number: 20190056587
    Abstract: A vehicle may have a head-up display that produces a display output allowing a viewer in the vehicle to observe two-dimensional or three-dimensional content. The head-up display may include a display unit that produces the display output and an optical combiner on a vehicle window that directs the display output towards the viewer. The optical combiner may be a holographic or diffractive optical element or may be an array of angled reflectors such as micromirrors embedded in an index-matching material. Optical combiners formed from holographic elements may be configured to reflect light at an angle of reflection that is different than the angle of incidence, thereby allowing light to reach a viewer's eyes even when the head-up display reflects light off of a side window on a vehicle door. A holographic optical element may include volume holographic media such as photopolymers or holographic polymer dispersed liquid crystal.
    Type: Application
    Filed: July 15, 2016
    Publication date: February 21, 2019
    Inventors: Arthur Y. Zhang, Graham B. Myhre, Hyungryul J. Choi, Matthew E. Last
  • Patent number: 10203489
    Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have a pixel array that produces light associated with images. The display system may also have a linear polarizer through which light from the pixel array passes and a quarter wave plate through which the light passes after passing through the quarter wave plate. The optical system may be a catadioptric optical system having one or more lens elements. The lens elements may include a plano-convex lens and a plano-concave lens. A partially reflective mirror may be formed on a convex surface of the plano-convex lens. A reflective polarizer may be formed on the planar surface of the plano-convex lens or the concave surface of the plano-concave lens. An additional quarter wave plate may be located between the reflective polarizer and the partially reflective mirror.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 12, 2019
    Assignee: Apple Inc.
    Inventors: Sajjad A. Khan, Nan Zhu, Graham B. Myhre, Brent J. Bollman, Tyler Anderson, Weibo Cheng, John N. Border
  • Publication number: 20180304727
    Abstract: A vehicle may have optical structures such as windows and mirrors that have the potential to allow glare from external objects to shine into the eyes of a driver or other vehicle occupant. A control circuit may gather information on where the eyes of the driver are located using a camera mounted in the vehicle and may gather information on where the sun or other source of glare are located outside of the vehicle. Based on this information, the control circuit may direct a light modulator on a window or mirror to selectively darken an area that prevents the glare from reaching the eyes of the driver. The light modulator may have a photochromic layer that is adjusted by shining light onto the photochromic layer, may be a liquid crystal modulator, an electrochromic modulator, or other light modulator layer.
    Type: Application
    Filed: September 1, 2016
    Publication date: October 25, 2018
    Inventors: Hyungryul J. CHOI, Arthur Y. ZHANG, Cheng CHEN, Graham B. MYHRE, Malcolm J. NORTHCOTT, Matheen M. SIDDIQUI, Russell Y. WEBB, Matthew E. LAST
  • Publication number: 20180039052
    Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have a pixel array that produces light associated with images. The display system may also have a linear polarizer through which light from the pixel array passes and a quarter wave plate through which the light passes after passing through the quarter wave plate. The optical system may be a catadioptric optical system having one or more lens elements. The lens elements may include a plano-convex lens and a plano-concave lens. A partially reflective mirror may be formed on a convex surface of the plano-convex lens. A reflective polarizer may be formed on the planar surface of the plano-convex lens or the concave surface of the plano-concave lens. An additional quarter wave plate may be located between the reflective polarizer and the partially reflective mirror.
    Type: Application
    Filed: February 16, 2017
    Publication date: February 8, 2018
    Inventors: Sajjad A. Khan, Nan Zhu, Graham B. Myhre, Brent J. Bollman, Tyler Anderson, Weibo Cheng, John N. Border
  • Patent number: 8866997
    Abstract: Linear photo-oriented polymer (LPP) layers are situated to align liquid crystals in a liquid crystal polymer (LCP) layer situated at or on the LPP layers. The LCP layer can include a guest such as a fluorophore that aligns with the liquid crystal so as to emit polarized fluorescence in response to an excitation beam. Layer LPP/LCP structures can be provided as light emitters, patterned polarizers, patterned retarders and other devices based on selection of one or more guest materials included in the LCP and alignable with the liquid crystal.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: October 21, 2014
    Assignee: Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Stanley Pau, Arshad S. Sayyad, Graham B. Myhre