Using A Varifocal Lens Or Mirror (epo) Patents (Class 348/E13.032)
  • Patent number: 12231613
    Abstract: An object displaying system includes a right light signal generator, a left light signal generator, a right combiner, and a left combiner. The right light signal generator generates right light signals for an object. The right combiner receives and redirects the right light signals towards one retina of a viewer to display multiple right pixels of the object. The left light signal generator generates leftght signals for the object. The left combiner receives and redirects the left light signals towards the other retina of the viewer to display multiple left pixels of the object. A first redirected right light signal and a corresponding first redirected left light signal are perceived by the viewer to display a first virtual binocular pixel of the object with a first depth that is related to a first angle between the first redirected right light signal and the corresponding first redirected left light signal.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: February 18, 2025
    Assignee: HES IP HOLDINGS, LLC
    Inventors: Jiunn-Yiing Lai, Feng-Chun Yeh, Guo-Hsuan Chen
  • Patent number: 12142170
    Abstract: A three-dimensional-image display device includes a display unit, a variable focus lens unit, and a controller. The display unit sequentially displays a first image displayed by a first image signal and a second image displayed by a second image signal, and that projects a display light of the first image and a display light of the second image. The variable focus lens unit switches the focal lengths for the display lights to respectively form, as virtual images, the first image and the second image on a first display surface and a second display surface. The controller controls, on the basis of a start timing at which writing, of an image signal of a different image, to pixels of the display unit starts, a projecting timing at which the display unit projects the display light of the first image and the display light of the second image.
    Type: Grant
    Filed: February 13, 2023
    Date of Patent: November 12, 2024
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Naoyasu Ikeda, Tetsushi Sato
  • Patent number: 12028509
    Abstract: An optical target system for a device under test disposed in an optical path, the optical target system including a pupil, a lens system and a target configured to be adjustable in position along the optical path such that the object distance of the target with respect to the lens system, is adjustable, the lens system is disposed between the pupil and the target along the optical path, wherein a first virtual image cast behind the target is of a first size when the target is disposed at a first position along the optical path, a second virtual image cast behind the target is of a second size when the target is disposed at a second position along the optical path.
    Type: Grant
    Filed: December 4, 2023
    Date of Patent: July 2, 2024
    Assignee: MLOptic Corp.
    Inventors: Pengfei Wu, Zhengyuan Wang
  • Patent number: 11947134
    Abstract: A device is provided to generate a three-dimensional (3D) real image. A display panel is divided into several sub-areas for emitting scenes. Through a projecting lens-array unit, the scenes enter a fusion lens unit to form a real image of light field at a position beyond common barrier. Through an eyepiece unit, the image is emitted to human eye. Thus, the present invention provides a device for near-eye viewing, which reduces existing human-eye vergence accommodation conflict (VAC) in most augmented reality and mixed reality devices. Therein, the display of near-eye light field is a process of light-field reproduction, which merges the scenes and reduces aberration.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: April 2, 2024
    Assignee: National Taiwan University
    Inventors: Jiun-Woei Huang, Chang-Le Liu, Hong-Ming Chen, Kuang-Tsu Shih
  • Patent number: 11726318
    Abstract: Optical systems and methods for operation thereof are disclosed. A delimited zone is defined as a function of distance from the optical system based on a VAC limit, the delimited zone having at least one distance threshold. A virtual distance of a virtual depth plane from the optical system at which a virtual object is to be displayed is determined. It is determined whether the virtual distance is outside the delimited zone by comparing the virtual distance to the at least one distance threshold. A collimated pixel beam associated with the virtual object is generated by a projector of the optical system. The collimated pixel beam is modified to generate a modified pixel beam if the virtual distance is outside the delimited zone. Modifying the collimated pixel beam includes converging the collimated pixel beam and/or reducing a diameter of the collimated pixel beam.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: August 15, 2023
    Assignee: Magic Leap, Inc.
    Inventors: Michael Anthony Klug, William Hudson Welch, Jason Schaefer, Björn Nicolaas Servatius Vlaskamp, Robert D. Tekolste, Michael Beau Dennison Vaughn
  • Patent number: 11726261
    Abstract: Many embodiments in accordance with the invention are directed towards waveguides implementing birefringence control. In some embodiments, the waveguide includes a birefringent grating layer and a birefringence control layer. In further embodiments, the birefringence control layer is compact and efficient. Such structures can be utilized for various applications, including but not limited to: compensating for polarization related losses in holographic waveguides; providing three-dimensional LC director alignment in waveguides based on Bragg gratings; and spatially varying angular/spectral bandwidth for homogenizing the output from a waveguide. In some embodiments, a polarization-maintaining, wide-angle, and high-reflection waveguide cladding with polarization compensation is implemented for grating birefringence. In several embodiments, a thin polarization control layer is implemented for providing either quarter wave or half wave retardation.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: August 15, 2023
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Milan Momcilo Popovich, Alastair John Grant
  • Patent number: 11109015
    Abstract: A display apparatus according to the present disclosure includes a display unit formed with a lens being arranged for a plurality of adjoining pixels including a left-eye pixel and a right-eye pixel, as a unit, a detection unit attached to the display unit and configured to detect positional information and orientation information of an eye of an observer with respect to a display surface of the display unit, a signal processing unit configured to generate virtual image information for each of the left-eye pixel and the right-eye pixel so as to present a virtual image in an aspect ratio different from the aspect ratio of the display surface of the display unit on the basis of a result of detection obtained by the detection unit, and a display control unit configured to drive the left-eye pixel and the right-eye pixel on the basis of the virtual image information generated by the signal processing unit.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: August 31, 2021
    Assignee: SONY CORPORATION
    Inventor: Masanori Iwasaki
  • Patent number: 8525199
    Abstract: In a solid-state image capturing device having the locations of photodiodes in each pixel unit to be different according to a sequence, the light receiving sensitivity and the luminance shading characteristic are improved. A circumferential portion of a microlens 12 which is arranged above a corresponding photodiode 11 is formed so as to overlap an adjacent microlens 12 thereto, and the locations of microlenses 12 in each pixel unit are different according to a sequence. Light of an image that is incident upon each of the microlenses 12 is incident upon approximately the same portion (e.g., central portion) of each of the respective photodiodes 11.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: September 3, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tomohiro Konishi