Patents Examined by Balram T Parbadia
  • Optical lens assembly and image capturing device
    Patent number: 11163136
    Abstract: An optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element and a third lens element. The first lens element with positive refractive power has an object-side surface being convex, and the object-side surface and an image-side surface thereof are aspheric. The second lens element with negative refractive power has an image-side surface being concave, and an object-side surface and the image-side surface thereof are aspheric. The third lens element with refractive power has an object-side surface being concave, and the object-side surface and an image-side surface thereof are aspheric. The optical lens assembly further includes a stop with no lens element having refractive power disposed between the stop and the first lens element. The optical lens assembly has a total of three lens elements with refractive power.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: November 2, 2021
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che Hsueh, Hsin-Hsuan Huang
  • Lens module
    Patent number: 11156795
    Abstract: A lens module, including: a lens barrel having a receiving space, a set of lenses received in the receiving space, the set of lenses including at least a first lens and a second lens close to the first lens, and a positioning structure fixing the first lens to the second lens. The first lens includes a first optical portion for imaging and a first fixing portion surrounding the first optical portion, and the second lens includes a second optical portion for imaging and a second fixing portion surrounding the second optical portion. The positioning structure includes a positioning part arranged on one of the first fixing portion and the second fixing portion, and a holding part arranged on the other one of the first fixing portion and the second fixing portion. The holding part holds the positioning part.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 26, 2021
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventor: Jia Wan
  • Polarizing plate, polarizing plate manufacturing method, and optical apparatus
    Patent number: 11143805
    Abstract: To provide a polarizing plate capable of improving durability of a polarizing plate and productivity of an optical apparatus, a polarizing plate manufacturing method, and an optical apparatus. Provided is a polarizing plate with a wire grid structure, including: a transparent substrate; and a grid-shaped convex portion arranged on the transparent substrate on one surface side of the polarizing plate at a pitch shorter than a wavelength of light of a use band and extending in a predetermined direction, wherein one surface of the polarizing plate is provided with a water-repellent layer covering a surface of the grid-shaped convex portion, and wherein a side surface of the polarizing plate is not provided with the water-repellent layer.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: October 12, 2021
    Assignee: Dexerials Corporation
    Inventor: Takahiro Kimura
  • Fringe mitigation using short pulsed laser diodes
    Patent number: 11119320
    Abstract: Systems and methods are provided for controlling and/or modifying operation of a red, green, blue (RGB) laser assembly for creating images in mixed-reality environments. Initially, the lasers in the RGB laser assembly operate in a low power or non-emitting state. Then, the lasers emit laser light to illuminate a pixel or a group of pixels. This illumination occurs for a period of time spanning less than 15 nanoseconds. By causing the lasers to emit laser light only during this short period of time, the resulting laser light is structured with a reduced spatial coherence level. Once the time period elapses, then the lasers again return to the non-emitting state. This process repeats for each pixel such that the lasers generate pulsed emissions. By operating the lasers with a reduced spatial coherence, undesired visual artifacts can be reduced or eliminated within the target display area.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 14, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Christopher Francis Reidy, Shiva Shahin, Kai Zang, Raymond Kirk Price
  • Miniature optical lens assembly having optical element, imaging apparatus and electronic device
    Patent number: 11112542
    Abstract: A miniature optical lens assembly, which has at least one of optical element, includes the optical element. The optical element includes a low reflection layer disposed on at least one surface of the optical element. The low reflection layer includes a plurality of nanocrystalline grains, and the nanocrystalline grains are located on one surface of the low reflection layer. The optical element is at least one of a light blocking element, an annular spacer element and a barrel element.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: September 7, 2021
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuo-Chiang Chu, Chien-Pang Chang, Chun-Hung Teng, Wen-Yu Tsai
  • Crazing resistant coating and method thereof
    Patent number: 11112620
    Abstract: An anti-reflective coating system configured to resist crazing resulting from applied compressive forces, and an optical article employing the anti-reflective coating system; and methods of forming the same. The methods include forming a first anti-reflective coating over a first surface of the optical article and applying a second anti-reflective coating over a second surface of the optical article, where the second anti-reflective coating has substantially the same reflectance than the first anti-reflective coating and a mechanical property distinct from the first anti-reflective coating.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: September 7, 2021
    Assignee: Vision Ease, LP
    Inventors: Jeff Brown, Michael Marshall, John T. Moxon
  • Imaging optical lens
    Patent number: 11106013
    Abstract: The present disclosure relates to optical lenses and discloses an imaging optical lens The imaging optical lens includes from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. A focal length of the first lens is f1, a focal length of the second lens is f2, a curvature radius of an object-side surface of the third lens is R5, a curvature radius of an image-side surface of the third lens is R6, and the following relational expressions are satisfied: 20?(R5+R6)/(R5?R6)?100; and ?10?f2/f1??2.7.
    Type: Grant
    Filed: July 28, 2019
    Date of Patent: August 31, 2021
    Assignee: AAC Optics (Changzhou) Co., Ltd.
    Inventors: Chenxiyang Chen, Chunhuan Fang, Hiroyuki Teraoka
  • Optical isolation element
    Patent number: 11086052
    Abstract: The present application relates to an optical isolation element which sequentially comprises a first optical path changing element, a light control film and a second optical path changing element. The optical isolation element has excellent forward transmittance, which may require no separate external force. The optical isolation element can be applied to various applications such as the field of optical communication or laser optics, the field of security or privacy protection, brightness enhancement of displays, or military hiding and covering.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 10, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Sang Choll Han, Seong Min Park, Byung Mook Kim
  • Methods and apparatuses for reducing stray light emission from an eyepiece of an optical imaging system
    Patent number: 11086128
    Abstract: An eyepiece for a head-mounted display includes one or more first waveguides arranged to receive light from a spatial light modulator at a first edge, guide at least some of the received light to a second edge opposite the first edge, and extract at least some of the light through a face of the one or more first waveguides between the first and second edges. The eyepiece also includes a second waveguide positioned to receive light exiting the one or more first waveguides at the second edge and guide the received light to one or more light absorbers.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 10, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Fahri Yaras, Eric C. Browy, Victor Kai Liu, Samarth Bhargava, Vikramjit Singh, Michal Beau Dennison Vaughn, Joseph Christopher Sawicki
  • Electrochromic display element, optical filter, lens unit, and imaging device
    Patent number: 11079647
    Abstract: An electrochromic display element is provided. The electrochromic display element includes a pair of electrodes and an electrochromic layer disposed between the electrodes. The electrochromic layer contains a solvent, a supporting electrolyte, an anodic electrochromic molecule comprising a triarylamine derivative, and a cathodic electrochromic molecule comprising a viologen derivative. Concentrations of the triarylamine derivative and the viologen derivative in the electrochromic layer are each 4 mM or more.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 3, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Ura, Fuminari Kaneko
  • Infrared cut-off filter and preparation method thereof
    Patent number: 11073639
    Abstract: The application relates to an infrared cut-off filter, which includes: a substrate composed of white glass and an infrared cut-off film layer plated on one surface of the white glass; a spin-coated layer plated on the other surface of the white glass; and a reflection-reducing film layer plated on the spin-coated layer; the spin-coated layer includes a bottom layer and an absorbing layer each composed of an organic substance. The infrared cut-off filter has a stable structure, a high degree of firmness between layers, and a low cost.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: July 27, 2021
    Assignee: XINYANG SUNNY OPTICS CO., LTD.
    Inventors: Lei Wang, Weihong Ding, Rui Du
  • Skew mirrors, methods of use, and methods of manufacture
    Patent number: 11054564
    Abstract: An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about a constant reflective axis across a relatively wide range of wavelengths. In some examples, a skew mirror has a constant reflective axis across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 6, 2021
    Assignee: Akonia Holographies LLC
    Inventors: Mark R. Ayres, Kenneth Anderson, Adam Urness, Bradley J. Sissom
  • Eyelens waveguide
    Patent number: 11054647
    Abstract: Various waveguides and image display systems are disclosed herein. In an example, an image display system can include an optical engine configured to generate an image and a waveguide. The waveguide can have a light in-coupling region formed along a peripheral edge of the waveguide, the light in-coupling region including a first surface with a first set of diffraction gratings, and a light exit region formed along a top surface of the waveguide, the light exit region including a second set of diffraction gratings. The first set of diffraction gratings can be configured to diffract light towards the second set of diffraction gratings, and the second set of diffraction gratings can be configured to diffract light towards the user's eye.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: July 6, 2021
    Assignee: Snap Inc.
    Inventors: Jun Lin, Zhibin Zhang
  • Wide-angle lens assembly
    Patent number: 11054619
    Abstract: A wide-angle lens assembly comprises sequentially from an object side to an image side along an optical axis a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The first lens is a meniscus lens with refractive power. The second lens is a meniscus lens with refractive power. The third lens has refractive power and includes a concave surface facing the object side. The fourth lens has positive refractive power and includes a convex surface facing the image side. The fifth lens has refractive power. The sixth lens is a biconvex lens with positive refractive power. The seventh lens has refractive power. The eighth lens has positive refractive power. The ninth lens has positive refractive power.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: July 6, 2021
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.
    Inventor: Tsan-Haw Lee
  • Waterproof display apparatus and forming method thereof
    Patent number: 11042071
    Abstract: A waterproof display apparatus includes a bottom waterproof structure, a plurality of driving substrates, a panel laminate (FPL) and a top waterproof structure. The bottom waterproof structure has a first edge. The driving substrates are disposed on the bottom waterproof structure and defining a gap between adjacent driving substrates. The gap has opposite top and bottom portions. The FPL covers the driving substrates and includes a display medium layer therein. The top waterproof structure covers the FPL and has a second edge. The first and second edges are joined in a waterproof manner. The bottom portion of the gap is sealed by the bottom waterproof structure, and the top portion of the gap is sealed by the FPL or the top waterproof structure such that the gap is empty.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: June 22, 2021
    Assignee: E Ink Holdings Inc.
    Inventors: Chin-Chi Yu, Chih-Chun Chen, Shi-Lin Li, Hsin-Chung Wu
  • Polarizer, optical apparatus including polarizer, display apparatus including polarizer, and method of preparing polarizer
    Patent number: 11035991
    Abstract: A polarizer includes a substrate, and a plurality of stripe shaped grid lines on the substrate. Each of the grid lines may include a light absorbing layer and a reflective layer, the reflective layer being between the light absorbing layer and the substrate, and the light absorbing layer may include an oxide that contains molybdenum (Mo), tungsten (W), or a combination of Mo and W.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyuneok Shin, Sanggab Kim, Gyungmin Baek, Dokeun Song, Sangwon Shin, Hyunmin Cho
  • Lens module
    Patent number: 11029481
    Abstract: A lens module includes a lens barrel, and a lens group having a first and second lenses. An image side surface of a first barrel wall includes a first planar surface, a first oblique surface obliquely extending from the first planar surface, and a second planar surface extending from the first oblique surface. An object side surface of a peripheral portion of the first lens includes a second oblique surface attached to the first oblique surface and a fourth planar surface attached to the second planar surface. An image side surface of the peripheral portion of the first lens includes a fifth planar surface, a third oblique surface obliquely extending from the fifth planar surface, and a sixth planar surface extending from the third oblique surface towards the optical axis. An object side surface of the second lens includes a seventh planar surface and a fourth oblique surface.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: June 8, 2021
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventor: Hailong Wang
  • Polarizing plate and optical apparatus including the same
    Patent number: 11029458
    Abstract: To provide a polarizing plate and an optical apparatus capable of improving durability while maintaining excellent optical characteristics. Provided is a polarizing plate 1 with a wire grid structure, including: a transparent substrate 10; and a grid-shaped convex portion 11 which is arranged on the transparent substrate 10 at a pitch P shorter than a wavelength of light of a use band, extends in a predetermined direction, and includes a reflection layer 12 formed of a light reflective material, wherein a surface of the grid-shaped convex portion 11 and a surface of a bottom surface portion of a groove formed between the grid-shaped convex portions 11 are provided with a protection film 20 which covers the surfaces thereof and the protection film 20 is formed by two kinds or more of protection films including an organic film formed of an organic material.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: June 8, 2021
    Assignee: Dexerials Corporation
    Inventors: Akio Takada, Kazuyuki Shibuya, Shigeshi Sakakibara, Toshiaki Sugawara, Yusuke Matsuno
  • Method of forming a top plane connection in an electro-optic device
    Patent number: 11022854
    Abstract: An electrical connection between the backplane and the light-transmissive front electrode of an electro-optic display is provided by forming an aperture through the top front electrode coupled and a substrate coupled thereto and subsequently introducing a flowable, electrically-conductive material into the aperture. The flowable, electrically-conductive material provides an electrical contact between the light-transmissive electrically-conductive layer and the backplane.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: June 1, 2021
    Assignee: E Ink Corporation
    Inventors: Matthew Joseph Kayal, Steven Joseph Battista, Richard J. Paolini, Jr., Shyamala A. Subramanian
  • Display device
    Patent number: 11022728
    Abstract: In a display device in which a light shielding member having an opening formed in an image display surface of a display is arranged, occurrence of moire is prevented. A width (W1Y) of a first opening (OP1) in a first light shielding member (13) of a display (10) and a width (W2Y) of a second opening (OP2) of a second light shielding member (20) on a surface of the display (10) are set so that (W1Y?W2Y)/2>?LY is established.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: June 1, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hikaru Kuki, Ryoh Araki, Tsuyoshi Kawaguchi