Patents Examined by Thomas K. Pham
  • Patent number: 11327274
    Abstract: An observation optical system for use in observing an image displayed on an image displaying surface, includes, in order from an observation surface side to the image displaying surface side: a first lens having a first transmission reflective surface and a first transmissive surface; and a second lens having a second transmission reflective surface and a second transmissive surface, in which the first lens and the second lens are arranged via an interval interposed therebetween; light from the image displaying surface transmits through the second lens, is reflected by the first transmission reflective surface, is reflected by the second transmission reflective surface, is transmitted through the first lens, and then travels toward the observation surface side; and a focal length of the first lens and a focal length of the observation optical system are appropriately set.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: May 10, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yoshihisa Tashiro
  • Patent number: 11320666
    Abstract: Optoelectronic apparatus includes a substrate and an array of light-emitting elements formed on a semiconductor die and mounted on the substrate, wherein the light-emitting elements are driven by separate, respective conductors, which are formed on the substrate. A controller drives the light-emitting elements selectively by applying drive signals to the respective conductors in order to create a pattern. One or more optical elements are mounted so as to receive light emitted from the array of light-emitting elements and include at least one diffractive optical element (DOE) configured to project the received light from the first optical element so as to create multiple replicas of the pattern, which fan out over a predefined angular range.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: May 3, 2022
    Assignee: APPLE INC.
    Inventor: Zafrir Mor
  • Patent number: 11314097
    Abstract: An optical system for displaying an object to a viewer is described. The optical system includes an integral first optical assembly, an integral second optical assembly, and an integral third optical assembly disposed between the integral first and second optical assemblies. The integral first optical assembly has a first focal length and includes one or more first optical lenses, and a reflective polarizer. The integral second optical assembly has a second focal length and includes one or more second optical lenses, and a partial reflector having an average optical reflectance of at least 30% for a desired plurality of wavelengths. The integral third optical assembly has a third focal length and includes a curved first phase retarder. The third focal length is greater than a smaller of the first and second focal lengths.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: April 26, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Andrew J. Ouderkirk, Zhisheng Yun, Jo Anne Etter
  • Patent number: 11294183
    Abstract: A VR lens structure and a display device are provided. The VR lens structure includes a first lens and a second lens disposed opposite to each other. The first lens is provided with a first side surface and a second side surface which are disposed opposite to each other, and at least one of the first side surface and the second side surface is an aspheric surface. The second lens is a Fresnel lens, a smooth surface of the second lens is disposed proximal to the second side surface, and a Fresnel surface of the second lens is disposed farther away from the second side surface than the smooth surface.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: April 5, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yinwei Chen, Xuebing Zhang, Yali Liu, Zhiyu Sun, Hao Zhang, Haiwei Sun
  • Patent number: 11294182
    Abstract: The present invention relates to a near-to-eye display device display device in the form of a head-worn display. The present invention more particularly relates to a near-to-eye display device (10) comprising at least one point light source (11), at least one spatial light modulator (18) and at least one reflector mounted on the near-to-eye display device (10).
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: April 5, 2022
    Assignee: CY VISION INC.
    Inventors: Hakan Urey, Erdem Ulusoy, Mehmet Kivanc Hedili
  • Patent number: 11275234
    Abstract: The invention concerns a projection objective and a waveguide display. The objective is adapted to project an image from a first plane to a second plane and comprises in order from the second plane a first optical element group having a positive effective focal length, a second optical element group placed between the first plane and the first optical element group and having a negative effective focal length, and a third optical element group placed between the first plane and the second optical element group and having a positive effective focal length. Counting from the second plane, the first refractive surface of the second optical element group is concave towards the second plane and the second refractive surface of the third optical element group is convex towards the first plane. The objective suits well for projecting images to diffractive optical displays.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 15, 2022
    Assignee: Dispelix Oy
    Inventor: Mika Aikio
  • Patent number: 11269180
    Abstract: An example head-mounted display device includes a light projector and an eyepiece. The eyepiece includes a light guiding layer and a first focusing optical element. The first focusing optical element includes a first region having a first optical power, and a second region having a second optical power different from the first optical power. The light guiding layer is configured to: i) receive light from the light projector, ii) direct at least a first portion of the light to a user's eye through the first region to present a first virtual image to the user at a first focal distance, and iii) direct at least a second portion of the light to the user's eye through the second region to present a second virtual image to the user at a second focal distance.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: March 8, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Eric C. Browy, Derek Michael Geiger
  • Patent number: 11209899
    Abstract: A technique for adjusting the brightness values of images to be displayed on a stereoscopic head mounted display is provided herein. This technique improves the perceived dynamic range of the head mounted display by dynamically adjusting the pixel intensities (also known generally as “exposure”) of the images presented on the head mounted display based on a detected gaze direction. The head mounted display includes an eye tracker that is able to sense the gaze directions of the eyes. The eye tracker, head mounted display, or a processor of a computer system receives this information, determines an intersection point of the eye gaze and a screen within the head mounted display and identifies a gaze area around this intersection point. Using this gaze area, the processing system adjusts the pixel intensities of an image displayed on the screen based on the intensities of the pixels within the gaze area.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: December 28, 2021
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Michael A. Evans, Nathaniel David Naegle
  • Patent number: 11199699
    Abstract: The present disclosure discloses a camera lens assembly. The camera lens assembly has an effective focal length f and an entrance pupil diameter EPD, and includes a first lens, a second lens, a third lens, and a fourth lens in sequence from an object side to an image side along an optical axis. The first lens has a negative refractive power, and an image-side surface thereof is a concave surface. The second lens has a positive refractive power or a negative refractive power. The third lens has a positive refractive power. The fourth lens has a positive refractive power or a negative refractive power, and an image-side surface thereof is a convex surface. An effective radius DT11 of an object-side surface of the first lens and half of a diagonal length ImgH of an effective pixel area on an electronic photosensitive element of the camera lens assembly satisfy: 1.2<DT11/ImgH<2.6.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: December 14, 2021
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventor: Yuanlin Jia
  • Patent number: 11194146
    Abstract: System and method using a projected reference to guide adjustment of a correction optic. In an exemplary method, a reference may be projected onto an imaging detector by propagation of light generally along an optical axis that extends from the reference, through an objective, to a surface of a sample holder, and from the surface, back through the objective, to the imaging detector. The light may propagate through an off-axis aperture located upstream of the imaging detector and spaced from the optical axis. A plurality of images of the reference may be captured using the imaging detector, and with a correction optic at two or more different settings. A setting for the correction optic may be selected based on the plurality of images, and a sample may be imaged while the correction optic has the selected setting.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: December 7, 2021
    Assignee: Molecular Devices, LLC
    Inventor: Matthew Chan
  • Patent number: 11175483
    Abstract: A wide field view display device has an enhanced FOV while maintaining a simplified and compact configuration. The wide field of view display includes a display device configured to emit a central set of rays and a peripheral set of rays, and an optics block. The optics block includes a central lens region configured to direct the central set of rays to a central image point, and a prism coupled to a periphery of the central lens region, wherein the prism is configured to direct the peripheral set of rays to a peripheral image point. The prism includes an entry surface that is configured to refract the peripheral set of rays to direct the peripheral set of rays to the reflecting surface; a reflecting surface that is configured to reflect the peripheral set of rays to the exit surface, and an exit surface that is configured to refract the peripheral set of rays to direct the peripheral set of rays to the peripheral image point.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: November 16, 2021
    Assignee: Sharp Kabushiki Kaisha
    Inventor: William Frederick Smith
  • Patent number: 11143842
    Abstract: An optical lens includes a first lens, a second lens and a third lens in an order from an object side to an image side along an optical axis. The first lens is a lens having negative refractive power, and an object-side surface of the first lens is concave; the second lens is a lens having positive refractive power, and an image-side surface of the second lens is convex; the third lens is a lens having positive refractive power, and an image-side surface of the third lens is convex. The optical lens satisfies a condition. i.e., 3<D1/f<6, wherein D1 is an optical effective diameter of the first lens and f is effective focal length of the optical lens. The optical lens is characterized by wide-angle and short distance.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 12, 2021
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.
    Inventor: An-Kai Chang
  • Patent number: 10962857
    Abstract: An electrochromic structure can include a substrate and an electrochromic residue disposed on the substrate. The electrochromic structure can include an electrochromic stack on the substrate. A process can be used to separate the structure. The process can include forming a filament in the substrate and applying a thermal treatment to the substrate. Forming a filament can be performed by applying a pulse of laser energy to the substrate. In a particular embodiment, a filament pattern including a plurality of filaments can be formed in the substrate. The substrate can include mineral glass, sapphire, aluminum oxynitride, spinel, or a transparent polymer.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 30, 2021
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Jean-Christophe Giron, Li-Ya Yeh
  • Patent number: 10955647
    Abstract: A zoom lens includes, in order from the object side, a positive first lens unit not moving for zooming, a negative second lens unit moving for zooming, positive third and fourth lens units moving for zooming, and a positive fifth lens unit not moving for zooming. Intervals between adjacent ones of the first to fifth lens units change for zooming. The third lens unit consists of positive, positive, and negative lenses in order from the object side. Appropriate settings are made to the zoom lens's focal lengths at the wide angle and telephoto ends, the lateral magnifications of the second lens unit at the wide angle and telephoto ends, the focal lengths of the third lens unit and the negative lens in the third lens unit, and the average Abbe number of the positive lenses and the Abbe number of the negative lens in the third lens unit.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: March 23, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naotoshi Ogawa, Masao Hori, Kazuya Shimomura
  • Patent number: 10955689
    Abstract: Provided is a contact lens including: a lens unit configured to be worn on an eyeball; an adjustment unit configured to adjust light to be transmitted through at least one of a first region that is a central portion of the lens unit and covers a pupil of the eyeball and a second region that is an outer side of the first region and covers an iris of the eyeball; and a control unit configured to control the adjustment unit in response to input of a trigger signal.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: March 23, 2021
    Assignee: SONY CORPORATION
    Inventors: Kazunori Hayashi, Yoichiro Sako, Takayasu Kon, Takatoshi Nakamura, Akira Tange, Tomoya Onuma, Hiroyuki Hanaya, Masakazu Yajima, Yuki Koga
  • Patent number: 10948632
    Abstract: In a light beam direction control element having: light transmitting regions made of light transmitting material arrayed on a substrate; and a light absorbing region made of light absorbent material filling a gap between the light transmitting regions, the light absorbing region restricting a light beam direction of light passing through the substrate, the light absorbing region extends in first and second directions that form a right angle to each other in a substrate plane. The light beam direction control element further has: a crossing portion where the light absorbing region extending in the first direction and the light absorbing region extending in the second direction cross each other to form an L or T shape; and at least one structure dividing the light absorbing region, located on a region which is other than the crossing portion and where the light absorbing region extends in the first or second directions.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: March 16, 2021
    Assignee: TIANMA MICROELECTRONICS CO., LTD.
    Inventor: Mamoru Okamoto
  • Patent number: 10948631
    Abstract: An optical system includes a first beam shifter and a second beam shifter configured to couple with one or more display screens. The first beam shifter is configured to shift first light from a first portion of the one or more display screens in a first direction, and the second beam shifter is configured to shift second light from a second portion of the one or more display screens in a second direction that is distinct from the first direction. The second portion of the one or more display screens does not overlap with the first portion of the one or more display screens. Also disclosed are a method for increasing an effective interpupillary distance of light provided by a display screen, and a head-mounted display including the above-described optical system and one or more display screens configured to project light through the optical system.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: March 16, 2021
    Assignee: Facebook Technologies, LLC
    Inventor: Youngshik Yoon
  • Patent number: 10928572
    Abstract: The present specification relates to a method for manufacturing a polarizing plate and a polarizing plate. More particularly, the present specification relates to a method for manufacturing a polarizing plate locally having a depolarization region, and a polarizing plate.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: February 23, 2021
    Inventors: Byung Sun Lee, Sung Hyun Nam, Kyun Il Rah
  • Patent number: 10925485
    Abstract: For reducing a time utilized in an AO process, provided is a deformable mirror system, including: a deformable mirror capable of changing a shape of a reflecting surface by a deformation amount in accordance with an input signal; a light wavefront measurement apparatus configured to measure a light wavefront shape of reflected light from the deformable mirror; a conversion factor calculation apparatus configured to calculate a conversion factor used in obtaining the input signal from a variation in light wavefront shape of the reflected light with respect to a change in input signal; a shape difference calculation apparatus configured to calculate a shape difference between the light wavefront shape measured by the light wavefront measurement apparatus and a light wavefront shape calculated from the input signal; and a conversion factor update unit configured to update the conversion factor in accordance with the calculated shape difference.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: February 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohei Takeno, Kaishi Ohashi
  • Patent number: 10921551
    Abstract: A moving speed control method of an optical element switching device including a fixing member, a moveable member having a plurality of recess portions configured to hold one or more optical elements, a driving device supported to the fixing member and configured to move the moveable member, and an engaging mechanism supported to the fixing member and configured to be engaged to the recess portion to thereby position each of the one or more optical elements on an optical axis, the moving speed control method includes: starting to move the moveable member from a state where the recess portion is engaged to the engaging mechanism; accelerating a moving speed of the moveable member; decelerating the moving speed when the engaging mechanism is to be engaged to the next recess portion; and making the moving speed zero when the engaging mechanism is engaged to the recess portion.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: February 16, 2021
    Assignee: MITUTOYO CORPORATION
    Inventor: Takahiro Ito