Patents Examined by Mohammed A Hasan
  • Patent number: 10895719
    Abstract: A projection system including seven lens groups sequentially arranged from an enlargement side, a first lens group having negative refractive power, a second lens group having positive refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, a fifth lens group having positive refractive power, a sixth lens group having positive refractive power, and a seventh lens group having positive refractive power, wherein ?dR that is a dispersion value of a lens that forms the seventh lens group out of the seven lens groups and is closest to a reduction side and ?dF that is a dispersion value of a lens that forms the first lens group out of the seven lens groups and is closest to the enlargement side satisfy a following conditional expression: 5<?dR??dF<30.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: January 19, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshihiko Sakai, Koji Shiokawa
  • Patent number: 10893798
    Abstract: Methods and systems for producing a refractive prescription for a consumer away from an optical office are disclosed. At a first time point, a first prescription for a first pair of corrective lenses is generated according to measured refractive errors, and a historical visual acuity profile is measured using the first prescription and a varying spherical power. At a second time point, a second visual acuity is measured using the first prescription. A new spherical power is computed using the historical visual acuity profile and the second visual acuity. A second prescription for a second pair of corrective lenses is generated based on the first prescription and the new spherical power. In some embodiments, the second visual acuity may be self-administered by the consumer away from an optical office.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: January 19, 2021
    Assignee: PERFECT VISION TECHNOLOGY (HK) LTD.
    Inventor: Junzhong Liang
  • Patent number: 10893799
    Abstract: A method for determining the topography of the cornea of an eye on the basis of an optical, contactless data capture. In the method for determining the topography of the cornea of an eye, which is based on a deflectometric method, the deflectometric measurements are carried out with the aid of a keratometric method by virtue of additional OCT-based scans being made at the keratometric measurement points, wherein the two measurement systems are registered to one another and both the keratometric and the OCT-based measurement values are recorded and used for mutual calibration to determine and output the topographic data. The proposed method serves to determine the topography of the cornea of an eye. It is helpful to ascertain the topography in order to be able to draw conclusions about possible pathological changes. Moreover, the exact measurement of the corneal topography is of great importance for correcting refractive errors.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: January 19, 2021
    Assignee: Carl Zeiss Meditec AG
    Inventors: Manfred Dick, Ferid Bajramovic, Wei-Jun Chen, Tobias Bühren, Matthias Reich, Jörg Meissner, Martin Kühner
  • Patent number: 10893803
    Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: January 19, 2021
    Assignee: PHOENIX TECHNOLOGY GROUP LLC
    Inventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
  • Patent number: 10890738
    Abstract: An optical imaging lens assembly includes five lens elements, which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The third lens element has negative refractive power. The fifth lens element has negative refractive power.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: January 12, 2021
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuan-Ting Yeh, Kuo-Jui Wang, Chien-Hsun Wu, Wei-Yu Chen, Po-Lun Hsu
  • Patent number: 10884267
    Abstract: The present invention is notably directed to display device (1, 1a d), comprising a set of pixels, each having a layer structure (2, 2c, 2d) that includes: a bi-stable, phase change material (10), or bi-stable PCM, having at least two reversibly switchable states, in which the PCM exhibits two different values of refractive index and/or optical absorption; and a heating element (17, 17c, 17d), electrically insulated from the PCM (10) and in thermal communication with the PCM (10) in the layer structure (2, 2c, 2d). The display device further comprises a set of nonlinear, monostable resistive switching elements (21), each in electrical communication with the heating element (17, 17c, 17d) of one of the pixels.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: January 5, 2021
    Assignee: BODLE TECHNOLOGIES LTD
    Inventors: Harish Bhaskaran, Peiman Hosseini, Ben Broughton
  • Patent number: 10884253
    Abstract: An apparatus and method for dynamic and reversible patterning of mask layers and manipulation and redistribution of energy sources such as laser beams. An embodiment of the present invention provides an apparatus including a mirror-like thin film comprising a front surface and a back surface configured to reflect a laser beam; a layer of a mask material on top of the front surface of the mirror-like thin film, wherein the mask material is transparent to the laser beam and is dewetted by a heat source to create a height profile in the mask material.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: January 5, 2021
    Assignee: Rutgers, The State University of New Jersey
    Inventors: Jonathan Phillip Singer, Tianxing Ma
  • Patent number: 10884263
    Abstract: A head-mounted display and an imaging apparatus for displaying image thereof are provided. The imaging apparatus includes a first display, a second display, and a first focus adjusting apparatus. The first display generates a first sub-image; wherein the first sub-image is located on a first imaging plane, and is then projected to the target system. The second display generates a second sub-image; wherein the second sub-image is located on a second imaging plane, and is then projected to the target system. The first focus adjusting apparatus is in front of the second display, and is used to adjust the position of the second imaging plane. The first imaging surface and a second imaging surface are overlapped or non-overlapped.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: January 5, 2021
    Assignee: HTC Corporation
    Inventors: Iok Kan Choi, Po-Sen Yang, Yu-Heng Chen, Ling-Yi Ding
  • Patent number: 10877241
    Abstract: A zoom lens includes, in order from an object side: a positive first unit; a negative second unit; and a rear group. The rear group includes: a positive object-side unit, which is arranged closest to the object side; a negative rear-side unit, which is arranged closest to the image side in the zoom lens; and a negative middle unit, which is arranged adjacent to the rear-side unit and on the object side of the rear-side unit. The first unit, the middle unit, and the rear-side unit are configured to move toward the object side during zooming from a wide angle end. Further, focal lengths of the second unit and the middle unit, movement amounts of the middle unit, the rear-side unit, the object-side unit, and the first unit during zooming from the wide angle end to the telephoto end are each appropriately set.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: December 29, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Shunji Iwamoto
  • Patent number: 10871696
    Abstract: The present invention relates to an electrochromic device, and according to one aspect of the present invention, there is provided an electrochromic device comprising: a first electrode layer; a first electrochromic layer provided on the first electrode layer; an electrolyte layer provided on the first electrochromic layer; a second electrochromic layer provided on the electrolyte layer; and a second electrode layer provided on the second electrochromic layer, wherein it comprises a first auxiliary electrode layer and a second auxiliary electrode layer each provided on each opposite surface of the first electrochromic layer and the second electrochromic layer opposed to each other with the electrolyte layer interposed therebetween.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: December 22, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Dong Hyun Lee, Chang Yoon Lim, Su Hee Lee, Doo Hoon Song, Jae Sung Han
  • Patent number: 10867252
    Abstract: A method for forming an offset model is described. The offset model represents an estimated offset between a limbus center of a user eye and a pupil center of the user eye as a function of pupil size. The approach includes sampling a set of limbus center values, sampling a set of pupil center values, and sampling a set of radius values. The offset model is formed by comparing a difference between the set of limbus center values and the set of pupil center values at each of the radius values. A system and a computer-readable storage device configured to perform such a method are also disclosed.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: December 15, 2020
    Assignee: Tobii AB
    Inventor: Erik Lindén
  • Patent number: 10866455
    Abstract: The present invention is directed towards a display element comprising a photochromic-dichroic compound and a dichroic compound, the display element having a first absorption state and a second absorption state and being operable for switching from the first absorption state to the second absorption state in response to actinic radiation and to revert back to the first absorption state in response to actinic radiation and/or thermal energy, wherein the first absorption state has a transmittance percentage of 50% to 80%, and the second absorption state has a transmittance percentage of 10% to 50%. The invention is further directed to display devices comprising the display element, and methods of making the display element.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: December 15, 2020
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Anil Kumar, Kevin W. Seybert
  • Patent number: 10866474
    Abstract: According to one embodiment, a display device includes a switching element, an organic insulating film which covers the switching element, a reflective film in contact with the organic insulating film, a first transparent conductive film which covers the reflective film, a first capacitance insulating film which covers the first transparent conductive film, a pixel electrode disposed on the first capacitance insulating film and electrically connected to the switching element, an electrophoretic element disposed on the pixel electrode and a common electrode disposed on the electrophoretic element.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 15, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi
  • Patent number: 10859785
    Abstract: The present embodiment provides a camera module and a vehicle comprising same, the camera module comprising: a lens barrel accommodating at least one lens; a front body accommodating the lens barrel; a substrate assembly which couples with the front body, is disposed so as to be spaced apart from the lens barrel, and comprises at least one substrate so as to have an image sensor and a connector mounted thereon; a shield can which couples with the substrate assembly so as to accommodate at least one portion of the substrate assembly; and a rear body which couples with the front body and accommodates the substrate assembly and the shield can. The shield can comprises: a hole formed in a position corresponding to the connector; and a connection member which is bent and extends towards the inside from the hole. The connector passes through the hole, and the connector has a ground part disposed on the outer surface thereof so that the ground part and the connection member electrically make contact.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: December 8, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Je Kyung Park, Da Hin Moon, Chul Ho Lee, Sun Min Hwang
  • Patent number: 10859789
    Abstract: A technical concept of the present invention provides: a curved pattern marker capable of improving the precision of position detection and reducing size; and an optical tracking device including the marker. The marker comprises: a first lens unit, which has at least one lens having an incident surface, emits incident light within a target range, and is formed such that a light parallel to an optical axis among the incident light is vertically incident on the incident surface; a pattern unit having a curved pattern formed therein; and a second lens unit arranged between the first lens unit and the pattern unit, and adjusting the light emitted from the first lens unit such that the light is focused on the curved pattern.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: December 8, 2020
    Assignee: KOH YOUNG TECHNOLOGY INC.
    Inventor: Jong Kyu Hong
  • Patent number: 10845598
    Abstract: An optical structure includes a refractive material having a refractive index and a multilayer dichroic reflective coating. The multilayer dichroic reflective coating is disposed on the refractive material. The average refractive index of the multilayer dichroic reflective coating is substantially the same as the refractive index of the refractive material.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 24, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Qi Zhang, Robin Sharma, Andrew John Ouderkirk
  • Patent number: 10845568
    Abstract: A lens-group moving apparatus for moving, in an optical system including a plurality of lenses, a lens group including at least one lens among the plurality of lenses includes: a moving lens frame that holds the lens group; a fixed cylinder that holds the moving lens frame movably in an optical axis direction; a moving frame that is movable in the optical axis direction and changes a relative position with respect to the fixed cylinder; a moving structure that causes the moving frame to move in the optical axis direction; an intermediate member that contacts the moving frame and the moving lens frame and that transmits a movement of the moving frame to the moving lens frame; and an urging member that urges the moving lens frame in a direction of the intermediate member.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 24, 2020
    Assignee: Koniva Minolta, Inc.
    Inventor: Hiroki Kitamura
  • Patent number: 10840594
    Abstract: Disclosed is a beam steering device capable of adjusting a reflection angle of incident light and reflecting the incident light to a desired location. Also disclosed is an optical apparatus configured to detect light reflected from an external object and to extract information with respect to the external object. The beam steering device includes: a substrate; an antenna layer disposed on the substrate; a dielectric layer covering the antenna layer; a refractive index changing layer disposed on the dielectric layer; and an electrode layer disposed on the refractive index changing layer.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: November 17, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dongsik Shim, Byunggil Jeong, Junghyun Park, Byounglyong Choi
  • Patent number: 10835124
    Abstract: Disclosed is a polarization sensitive optical coherence tomography apparatus and control method thereof. According to the polarization sensitive optical coherence tomography apparatus and control method thereof of the present invention, the local phase delay value of each layer of a multiple of layers using Jones matrix for a birefringent material having the multiple of layers where each layers optical axis is random based on a polarized signal detected in an optical detector may be calculated. According to the present invention, a skin aging level can be accurately examined by obtaining an accurate accumulated phase delay value for a multiple of layers of birefringent material having a random optical axis.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 17, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jun Lee, Jungho Chung
  • Patent number: 10837193
    Abstract: A post holder for holding a post in place. The post holder includes: a casing including a hollow cylinder and a clamping flag defined by a cutout formed in the hollow cylinder; first and second brackets detachably secured to the casing; a cylindrical rod disposed between the first and second brackets and secured to the first and second brackets; and a levered cam disposed between the first and second brackets and having a shape of a comma that includes a tail and a circular disk. The circular disk has a hole that the cylindrical rod passes through, where the hole is offset from a center of the circular disk so that a level of a clamping force that the circular disk applies to the clamping flag changes as the levered cam rotates relative to the casing.
    Type: Grant
    Filed: January 1, 2019
    Date of Patent: November 17, 2020
    Assignee: FIAT LUX PHOTONICS LLC
    Inventor: David Scott Andrews