Patents by Inventor Eric J. Hansotte

Eric J. Hansotte 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: 10866426
    Abstract: An electronic device may have a light source such as a laser light source. The light source may emit light into a waveguide. A phase grating may diffract the light that is emitted into the waveguide to produce diffracted light. The diffracted light may be oriented parallel to a surface normal of an angled edge of the waveguide and parallel to a surface normal of a microelectromechanical systems mirror element in a two-dimensional scanning microelectromechanical systems mirror that is coupled to the edge of the waveguide. A wave plate may be interposed between the mirror and the edge of the waveguide to change the polarization state of light reflected from the mirror element relative to incoming diffracted light from the phase grating. The phase grating may be configured so that the reflected light is not diffracted by the phase grating.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 15, 2020
    Assignee: Apple Inc.
    Inventors: Eric J. Hansotte, Byron R. Cocilovo, Se Baek Oh, Seyedeh Mahsa Kamali, Francesco Aieta
  • Publication number: 20200310121
    Abstract: An electronic device such as a head-mounted display may have a display system that produces images. The display system may have one or more pixel arrays (26-1, 26-2) such as liquid-crystal-on-silicon pixel arrays. Images from the display system may be coupled into a waveguide (116) by an input coupler system (114X, 114Y) and may be coupled out of the waveguide in multiple image planes using an output coupler system (120X, 120Y). The input and output coupler systems may include single couplers, stacks of couplers, and tiled arrays of couplers. Multiplexing techniques such as wavelength multiplexing, polarization multiplexing, time-division multiplexing, multiplexing with image light having different ranges of angular orientations, and/or tunable lens techniques may be used to present images to a user in multiple image planes.
    Type: Application
    Filed: February 28, 2018
    Publication date: October 1, 2020
    Inventors: Hyungryul Choi, Eric J. Hansotte, Guolin Peng
  • 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
  • Publication number: 20200057308
    Abstract: An electronic device may have a reflective display with a pixel array that generates images. The reflective display may be illuminated by an illumination system. Light from the illumination system may be reflected by the pixel array as image light. The image light may be provided to a viewer using a waveguide with diffractive input and output couplers. The illumination system may have a waveguide. The illumination system may also have a light source such as one or more light-emitting diodes. Light from the light source may be coupled into the waveguide of the illumination system by a diffractive coupler such as volume hologram that serves as an input coupler. Light from the light source may be routed to the display to illuminate the display using the waveguide in the illumination system and a diffractive coupler such as a volume hologram that serves as an output coupler.
    Type: Application
    Filed: June 5, 2018
    Publication date: February 20, 2020
    Inventors: Hyungryul Choi, Eric J Hansotte, Guolin Peng, Paul J. Gelsinger-Austin, Se Baek Oh
  • 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: 20190265486
    Abstract: An electronic device may have a light source such as a laser light source. The light source may emit light into a waveguide. A phase grating may diffract the light that is emitted into the waveguide to produce diffracted light. The diffracted light may be oriented parallel to a surface normal of an angled edge of the waveguide and parallel to a surface normal of a microelectromechanical systems mirror element in a two-dimensional scanning microelectromechanical systems mirror that is coupled to the edge of the waveguide. A wave plate may be interposed between the mirror and the edge of the waveguide to change the polarization state of light reflected from the mirror element relative to incoming diffracted light from the phase grating. The phase grating may be configured so that the reflected light is not diffracted by the phase grating.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 29, 2019
    Inventors: Eric J. Hansotte, Byron R. Cocilovo, Se Baek Oh, Seyedeh Mahsa Kamali, Francesco Aieta