Utilizing Multiple Light Beams Patents (Class 359/204.1)
  • Patent number: 11656339
    Abstract: Apparatuses and methods for controlling a micro-mirror are provided. In one example, a controller is coupled with a micro-mirror assembly comprising a micro-mirror, an actuator, and a sensor. The controller is configured to: receive a reference signal including information of a target oscillatory rotation of the micro-mirror; receive, from the sensor, the measurement signal of an oscillatory rotation of the micro-mirror; determine, based on the measurement signal and the information included in the reference signal, a difference between the oscillatory rotation of the micro-mirror and the target oscillatory rotation; receive an input control signal; generate, based on the difference and the input control signal, an output control signal to control at least one of a phase or an amplitude of the oscillatory rotation of the micro-mirror; and transmit the output control signal to the actuator.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: May 23, 2023
    Assignee: Beijing Voyager Technology Co., Ltd.
    Inventors: Zuow-Zun Chen, Jihua Li, Lingkai Kong, Youmin Wang, Yue Lu, Quin Zhou
  • Patent number: 11579384
    Abstract: A light source device includes an optical fiber; a beam light source configured to coaxially combine laser beams of different peak wavelengths to generate and emit a wavelength-combined beam; and an optical coupling device configured to allow the wavelength-combined beam emitted from the beam light source to be incident on the optical fiber. The optical coupling device includes a first cylindrical lens configured to focus the wavelength-combined beam in a first plane and having a first focal length, a second cylindrical lens configured to focus the wavelength-combined beam in a second plane and having a second focal length, and a third cylindrical lens having a third focal length greater than the first focal length and configured to focus the wavelength-combined beam in the first plane to be incident on the first cylindrical lens.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: February 14, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Masaki Omori, Yuto Oki
  • Patent number: 11550237
    Abstract: A system includes a light source, a deflection unit configured to deflect a light beam having a wavelength ? emitted from the light source, and a lens unit including a plurality of lenses that focuses deflected light on a surface to be scanned, at least one lens among the plurality of lenses has a micro concavo-convex structure in an optical surface, and the optical surface having the micro concavo-convex structure has a transmittance distribution for the light beam having the wavelength ? according to a light quantity distribution of the deflected light and entering the lens unit.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: January 10, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazuhiro Arai
  • Patent number: 11445155
    Abstract: Display systems, such as near eye display systems or wearable heads up displays, may include a laser projection system having an optical engine and an optical scanner. Light output by the optical engine may be directed into the optical scanner as two angularly separated laser light beams. The angularly separated laser light beams may overlap at an entrance pupil plane along a first dimension at a first scan mirror of the optical scanner, or at a location between the first scan mirror and an optical relay of the optical scanner. The angularly separated laser light beams may overlap at an exit pupil plane along the first dimension at a second scan mirror of the optical scanner or at an incoupler of the laser projection system.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: September 13, 2022
    Assignee: GOOGLE LLC
    Inventors: Daniel Adema, Ian Andrews
  • Patent number: 11428904
    Abstract: The present disclosure provides a camera lens which has good optical properties and a narrow angle, and includes five lenses. The camera lens includes, from an object side, 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 positive refractive power, and a fifth lens having a positive refractive power. The camera lens satisfies specified relational expressions.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: August 30, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventor: Hiroyuki Teraoka
  • Patent number: 11402722
    Abstract: This system and method of for providing a tunable orbital angular momentum system for providing higher order Bessel beams comprising: an acousto-optical deflector configured to receive an input beam, deflect a first portion of the input beam a first deflection angle relative to an axis of propagation and along an optical axis and deflect a second portion of the input beam a second deflection angle relative to the optical axis; a line generator disposed along the optical angle for receiving the first portion and the second portion of the input beam and provide an elliptical Gaussian mean; a log-polar optics assembly disposed along the optical angle for receiving the elliptical Gaussian beam and wrapping the elliptical Gaussian beam with an asymmetric ring; and, a Fourier lens configured to receive the wrapped elliptical Gaussian beam.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: August 2, 2022
    Assignee: Clemson Univeristy Research Foundation
    Inventors: Eric Johnson, Jerome Keith Miller, Richard Watkins, Kaitlyn Morgan, Wenzhe Li, Yuan Li
  • Patent number: 11314182
    Abstract: An optical scanning device includes an optical source portion to emit an optical beam; an optical deflector to deflect the optical beam in a main scanning direction; and an imaging lens to image the deflected optical beam onto a light-exposed object. A scanning line curvature caused by a refractive index deviation of the imaging lens is determined, and a curvature of the imaging lens in a sub-scanning direction is determined based on the determined scanning line curvature.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 26, 2022
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Heon-Hee Lim
  • Patent number: 11300780
    Abstract: A scanning optical device includes a scanning lens, a deflector, and a frame configured to support the scanning lens and the deflector. The deflector includes a substrate, a motor fixed to the substrate, and a polygonal mirror rotary driven by the motor. The scanning lens is arranged such that a longitudinal direction thereof is oriented in a main scanning direction of the deflector. The frame includes a supporting part configured to support the scanning lens. The supporting part is located such that the substrate and at least a portion of the supporting part overlap when viewed in a rotation axis direction of the motor.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: April 12, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Hayakawa, Hitoshi Fujino, Yoshifumi Nakamura
  • Patent number: 11045907
    Abstract: A system of additive-manufacturing by laser melting of a powder bed. The system includes a first laser unit selectively emitting a first laser beam to form at least one layer of material by melting the powder bed; a second laser unit selectively emitting a second laser beam to machine at least a portion of the layer of material; and an optical unit enabling to focus the first laser beam on the powder bed to be melted and the second laser beam on the layer of material to be machined. The system is able to produce a part by successive stacking of melted then machined layers of material. A process of additive-manufacturing by laser melting of a powder bed is also contemplated.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: June 29, 2021
    Inventors: Emmanuel Baubeau, Florent Missemer, Philippe Bertrand
  • Patent number: 11036047
    Abstract: According to an embodiment, a projection device includes: a light source; an optical scanning unit that includes a base unit, a driver fixed to the base unit, and a reflective unit supported by the driver and that drives the reflective unit to scan light from the light source; and a scanned unit configured to be scanned with the light from the optical scanning unit so that a projection image is formed on the scanned unit. The projection device further includes an attachment unit for attaching the projection device to a setting unit of a setting object on which the projection device is set. The attachment unit attaches the projection device to the setting unit such that a direction in which vibration caused by the setting object is equal to or smaller than a predetermined value and a reflective surface of the reflective unit are approximately perpendicular to each other.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: June 15, 2021
    Assignee: Ricoh Company, Ltd.
    Inventor: Tokiko Gotoh
  • Patent number: 11020746
    Abstract: A reaction processor includes: a vessel installation unit for installing a reaction processing vessel provided with a channel formed in a substrate; a high temperature heater and a medium temperature heater for adjusting the temperature of the channel of the reaction processing vessel; a vessel alignment mechanism for adjusting the position of the reaction processing vessel 10; and a housing that has a housing main unit and a cover portion capable of being opened and closed with respect to the housing main unit and that houses the vessel installation unit, the high temperature heater, the medium temperature heater, and the vessel alignment mechanism. In conjunction with the state of the cover portion being changed from an open state to a closed state, the vessel alignment mechanism aligns the reaction processing vessel such that the reaction processing vessel can be heated by the high temperature heater and the medium temperature heater.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: June 1, 2021
    Assignee: Nippon Sheet Glass Company, Limited
    Inventor: Takashi Fukuzawa
  • Patent number: 10962896
    Abstract: An optical scanning device includes: a polygon mirror deflecting light beams; and a plurality of reflective mirrors reflecting the light beams so as to guide the light beams to respective photosensitive drums. A first f? lens is provided on an optical path of the light beam from the polygon mirror to a first reflective mirror. The optical path of the light beam reflected by a third reflective mirror crosses the optical path between the first reflective mirror and a second reflective mirror.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 30, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Atsuo Nakao, Takaharu Motoyama, Hiroshi Yamamoto, Reishi Aoki
  • Patent number: 10914940
    Abstract: The spot diameter of a laser beam emitted from a first light source, passing through a first stop member, and focused on an object to be scanned is smaller than the spot diameter of a laser beam emitted from a second light source, passing through a second stop member, and focused on an object to be scanned. After the focal depth at the spot diameter of the laser beam emitted from the first light source, passing through the first stop member, and focused on the object to be scanned is adjusted by moving a first holding member holding the first light source at least in the emission direction of the laser beam from the light source, the first holding member and a housing member are bonded with an adhesive, and the first holding member is positioned and fixed to the housing member.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: February 9, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Atsushi Sano
  • Patent number: 10816887
    Abstract: A control device includes an acquirer, a timing detector, a controller, and a driver. The acquirer acquires an output voltage from a light detector for receiving laser light scanned by a light source and a deflector. The timing detector detects reference timings of the laser light on forward and backward paths in a scanning direction based on the output voltage. The controller generates a control signal for causing the light source and the deflector to draw a forward path image on a scanned surface from time obtained by adding a time to the reference timing on the forward path and to draw a backward path image on the surface from time obtained by adding a time to the reference timing on the backward path. The driver draws the images by driving the deflector, based on the control signal.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 27, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Jun Nakagawa, Toshihiro Yamashiro, Takayuki Shitomi
  • Patent number: 10817687
    Abstract: At least some embodiments of the present invention are directed toward optical arrangements for use in providing illumination light emitted by a barcode reader. In some embodiments, the arrangement includes an illumination source, a lens positioned within the path of the illumination light emitted by the illumination source where the lens is operable to collimate the light and redirect its central axis, and a window positioned within the path of the redirected and collimated light where the window is operable to alter the illumination light such that the resulting illumination light beam has a height-to-width ratio of less than 8 to 25.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: October 27, 2020
    Assignee: Zebra Technologies Corporation
    Inventors: Chinh Tan, Caihua Chen, Carl D. Wittenberg, Jason Y. Potter
  • Patent number: 10714889
    Abstract: A sensor system can comprise a light source generating a light pulse that is collimated, and a plurality of optical elements. Each of the plurality of optical elements is configured to rotate independently about an axis that is substantially common, and the plurality of optical elements operate to collectively direct the light pulse to one or more objects in an angle of view of the sensor system. Furthermore, the sensor system can comprise a detector configured to receive, via the plurality of optical elements, at least a portion of photon energy of the light pulse that is reflected back from the one or more objects in the angle of view of the sensor system, and convert the received photon energy into at least one electrical signal.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: July 14, 2020
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Xiaoping Hong, Huai Huang, Jiebin Xie
  • Patent number: 10558140
    Abstract: A leaf spring configured to mount an optical element to a housing, the housing containing: a rotary polygon mirror configured to deflect a laser beam emitted from a light source; and the optical element configured to guide the laser beam deflected by the rotary polygon mirror to a member to be scanned, wherein an adhesive is applied to the leaf spring, the adhesive being configured to adhere separated material scraped from the housing, the separated material being scraped from the housing by rubbing between the leaf spring and the housing at a time of mounting the optical element to the housing.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 11, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuta Okada, Hitoshi Iwai, Yasuaki Otoguro
  • Patent number: 10534448
    Abstract: Detection accuracy of a distance between a tip of a pointing element and a screen is to be improved. An interactive projector includes a projection unit, a plurality of cameras, and a position detection unit that detects a three-dimensional position of the pointing element with respect to the projected screen based on a plurality of images including the pointing element of which the image is captured by the plurality of cameras. When a direction separated from the projected screen is defined as a Z direction, the second camera is arranged at a position nearer the projected screen than that of the first camera in the Z direction.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: January 14, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tormod Njolstad, Gudmund Ake Slettemoen, Oystein Damhaug, Shinji Kubota
  • Patent number: 10498920
    Abstract: A light scanning apparatus including: a light receiving portion configured to receive a first laser beam to generate a synchronization signal; and a standing portion, wherein a first opening through which a part of the first laser beam that is emitted from a first light source and travels toward a rotary polygon mirror and the first laser beam that is emitted from the first light source and is deflected by the rotary polygon mirror pass and a second opening through which a part of the second laser beam that is emitted from a second light source and travels toward the rotary polygon mirror passes are provided in the standing portion, and wherein the first laser beam that is deflected by the rotary polygon mirror and passes through the first opening is incident on the light receiving portion.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: December 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuta Okada, Yuichiro Imai, Takehiro Ishidate, Daisuke Aruga, Yasuaki Otoguro
  • Patent number: 10484566
    Abstract: A light scanning apparatus including: a rotary polygon mirror configured to deflect a laser beam emitted from a light source; optical elements configured to guide the laser beam to a photosensitive member; a housing having a bottom surface and a side wall portion standing from the bottom surface and intersecting with a longitudinal direction of the optical elements; and a plurality of wall portions provided on the bottom surface so as to intersect with the longitudinal direction between the bottom surface and a lens of the optical elements that is closest to the rotary polygon mirror, the plurality of wall portions forming an air flow path for guiding an air flow caused by rotation of the rotary polygon mirror from a first space in which the rotary polygon mirror is arranged to a second space opposite to the first space with respect to the lens.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 19, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisashi Namba, Masahiro Ogura, Yosuke Murakami, Ken Katsuta, Yuta Okada
  • Patent number: 10473922
    Abstract: A casing of an optical scanning apparatus housing a rotary polygon mirror and an optical member: a mounting portion on which a sound insulation member separating the optical member from the rotary polygon mirror is mountable; a first support portion supporting a transparent member which covers an opening of the casing on which the sound insulation member is mounted; a second support portion supporting a transparent member which covers the opening of the casing on which the sound insulation member is not mounted and is thicker than the transparent member to be supported by the first support portion; and a bearing surface of the second support portion located on an inner side of the casing than a bearing surface of the first support portion so that light beam emission surfaces of the transparent members to be supported by the first and second support portions are on a substantially same plane.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Aruga, Hiroshi Nakahata, Yasuaki Otoguro, Takehiro Ishidate, Yuta Okada
  • Patent number: 10451870
    Abstract: An optical scanning apparatus includes: a casing having a bottom face; a cylindrical portion having a first opening through which a laser beam from a light source passes; a light-transmitting member arranged between the cylindrical portion and a rotary polygon mirror; a plate spring fixing the light-transmitting member; and a sealing member between the cylindrical portion and the plate spring, wherein a width of the first opening narrows progressively in a insertion direction of the plate spring, the sealing member comes into contact with the cylindrical portion in a first region when the plate spring is inserted, and in a second region closer to the bottom face than the first region, a region, in which the sealing member comes into contact with the cylindrical portion, expands toward a center part from two end portions of a leading end portion of the sealing member as the plate spring is inserted further.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuta Okada, Yuichiro Imai, Daisuke Aruga, Takehiro Ishidate, Yasuaki Otoguro
  • Patent number: 10446902
    Abstract: A transmission and emission assembly for a multibeam antenna and a multibeam antenna are disclosed. In one aspect, the assembly includes a plurality of radiating elements forming a radiating surface, an emission distribution network arranged upstream from the radiating surface and including a plurality of emission ports, a receiving distribution network arranged upstream from the radiating surface and including a plurality of receiving ports, a plurality of low-noise amplifiers and a capability for interconnecting each receiving port to at least one low-noise amplifier. The emission distribution network and the receiving distribution network are separate from one another and are arranged in a same unit separate from the communication module. The receiving distribution network and the radiating elements are thermally separated.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 15, 2019
    Assignee: Thales
    Inventors: Pierre Bosshard, Cyril Jean Benoit Mangenot, Fr├ęderic Michard
  • Patent number: 10413361
    Abstract: A device and a method for fractional skin treatment. The device employs two diffractive optical elements. One of the diffractive optical elements provides two coaxial laser beams and another diffractive optical element splits the two coaxial laser beams into a plurality of beamlets. A lens arranged to receive the plurality of the laser beams and to focus them in a skin treatment plane. The lens forms an image where each of the beamlets is imaged as a spot with a high intensity central area and a lower intensity area surrounding the central area.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 17, 2019
    Assignee: Candela Corporation
    Inventors: Jayant Bhawalkar, Kevin Schomacker
  • Patent number: 10397437
    Abstract: An image forming apparatus, including: a light source including a plurality of light emitting points and configured to emit light beams; a photosensitive member configured to rotate in a rotation direction so that a latent image is formed thereon with the light beams; a rotary polygon mirror configured to rotate around a rotation axis and having a plurality of mirror faces each configured to deflect the light beams so that the photosensitive member is scanned with the light beams; a detector configured to detect temperature; and a correction unit configured to correct image data of an input image by using a deviation amount, in the rotation direction of the photosensitive member, of the light beams deflected by each of the plurality of mirror faces, wherein the correction unit obtains the deviation amount according to the temperature detected by the detector.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 27, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yasutomo Furuta
  • Patent number: 10389897
    Abstract: A light scanning apparatus including: a first holder attached to a housing and configured to hold a first laser light source; a second holder attached to the housing and configured to hold a second laser light source; and a lens to which the laser lights are first incident, wherein the first holder and the second holder are attached to the housing in mutually different positions in a rotation axis direction of a rotary polygon mirror and in an optical axis direction of the lens, so that a first incident light path from the first laser light source to the rotary polygon mirror is placed between a second incident light path from the second laser light source to the rotary polygon mirror and the lens, and the first holder and the second holder overlap one another in the rotation axis direction.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: August 20, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Imai
  • Patent number: 10323933
    Abstract: Provided is a measuring device having improved operability. A head unit is fixedly coupled to an installation part with a stand. A measuring object is placed on a stage held by the installation part. The measuring object is irradiated obliquely downward with the measurement light having the pattern from the light projecting unit. The measurement light reflected obliquely upward by the measuring object is received by a selected one of first and second light receiving units, and a light reception signal representing a light reception amount is output. A second imaging visual field of the second light receiving unit is smaller than a first imaging visual field of the first light receiving unit, and included in the first imaging visual field. A second optical axis of the second light receiving unit is located below a first optical axis of the first light receiving unit.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: June 18, 2019
    Assignee: Keyence Corporation
    Inventors: Masaki Fujiwara, Shigeto Murakami, Takashi Nakatsukasa
  • Patent number: 10324396
    Abstract: A light scanning apparatus including: a bottom surface on which a rotary polygon mirror is mounted; a housing including a bottom surface on which the rotary polygon mirror is mounted and a side wall portion on which a first light source and a second light source are mounted, the side wall portion standing from the bottom surface; and a wall portion standing from the bottom surface, the wall portion being configured to block a first light beam emitted from the first light source and reflected by an inner wall of a first holder holding the first light source and a second light beam emitted from the second light source and reflected by an inner wall of the second holder holding the second light source.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: June 18, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Imai, Yuta Okada, Daisuke Aruga, Takehiro Ishidate, Yasuaki Otoguro
  • Patent number: 10303081
    Abstract: Provided is a casing of a light scanning apparatus accommodating a rotary polygon mirror and an optical member, the casing including: first seat surfaces arranged on a bottom surface of the casing to mount a first deflection portion that includes a first rotary polygon mirror, a first motor, and a first board on which the first rotary polygon mirror and the first motor are fixed; and second seat surfaces arranged on the bottom surface to mount a second deflection portion that includes a second rotary polygon mirror, a second motor having a maximum number of revolutions higher than that of the first motor, a second board on which the second rotary polygon mirror and the second motor are fixed, and a mounting portion supporting the second board, wherein at least one of the second seat surfaces is arranged outside of a region formed by connecting the first seat surfaces.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: May 28, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiro Ishidate, Yasuaki Otoguro, Yuichiro Imai, Daisuke Aruga, Yuta Okada
  • Patent number: 10302942
    Abstract: A light-source device including a light-emitting element to emit light, a light-receiving system, an acquisition unit, a setting unit, and an adjuster. The light-receiving system receives the light emitted from the light emitting element. The acquisition unit acquires a wavelength of the light emitted from the light emitting element. The setting unit sets a target value of an amount of the light received by the light-receiving system based on the wavelength acquired by the acquisition unit. The adjuster adjusts an amount of the light emitted from the light emitting element such that the amount of the light reaches the target value of the light that is set with the setting unit.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: May 28, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Kohji Sakai
  • Patent number: 10284741
    Abstract: Provided is an image reading optical system including an image reading unit in which plural reading devices are arranged in a first direction, and plural image-forming mirrors that guide reflected light, which is acquired by reflecting light from a light source in a reading target, to the image reading unit, wherein any one of the plural image-forming mirrors is an adjustment mirror that has power only in one of the first direction and a second direction intersecting the first direction, and is rotatable or relatively movable with respect to the other image-forming mirrors.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 7, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masaki Hachisuga, Kiyofumi Aikawa, Takashi Hiramatsu
  • Patent number: 10274724
    Abstract: A collimation assembly includes a body, at least four light sources, and at least four collimation lenses. The body has inner surfaces that define at least four hollow portions extending through the body between opposed first and second sides thereof, each hollow portion having opposed first and second openings at the first and second sides of the body, respectively. Each light source is disposed at the first opening of one of the at least four hollow portions and controllable to emit a light beam therethrough. Each collimation lens is disposed at the second opening of one of the at least four hollow portions to receive the light beam emitted by the light source disposed at the first opening and diverge the light beam as the light beam passes through the collimation lens. The at least four light sources and the at least four collimation lenses are supported by the body.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: April 30, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
  • Patent number: 10268854
    Abstract: At least some embodiments of the present invention are directed toward optical arrangements for use in providing illumination light emitted by a barcode reader. In some embodiments, the arrangement includes an illumination source, a lens positioned within the path of the illumination light emitted by the illumination source where the lens is operable to collimate the light and redirect its central axis, and a window positioned within the path of the redirected and collimated light where the window is operable to alter the illumination light such that the resulting illumination light beam has a height-to-width ratio of less than 8 to 25.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: April 23, 2019
    Assignee: Zebra Technologies Corporation
    Inventors: Chinh Tan, Caihua Chen, Carl D. Wittenberg, Jason Y. Potter
  • Patent number: 10148060
    Abstract: A sensor system can comprise a light source generating a light pulse that is collimated, and a plurality of optical elements. Each of the plurality of optical elements is configured to rotate independently about an axis that is substantially common, and the plurality of optical elements operate to collectively direct the light pulse to one or more objects in an angle of view of the sensor system. Furthermore, the sensor system can comprise a detector configured to receive, via the plurality of optical elements, at least a portion of photon energy of the light pulse that is reflected back from the one or more objects in the angle of view of the sensor system, and convert the received photon energy into at least one electrical signal.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: December 4, 2018
    Assignee: SZ DJI Technology Co., Ltd.
    Inventors: Xiaoping Hong, Huai Huang, Jiebin Xie
  • Patent number: 10082667
    Abstract: A laser imaging system may include a laser source, a laser receiver, a rotatable base defining a rotation axis, and an optical element (OE) carried by the rotatable base in an optical path between the laser source and laser receiver. An adjustable OE mounting fixture may mount the OE to be adjustably movable with respect to the rotatable base in a plane transverse to the rotation axis. A controller may be configured to adjust the adjustable OE mounting fixture to provide scan angle compensation.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: September 25, 2018
    Assignee: HARRIS CORPORATION
    Inventors: Anthony D. Truscott, Bradley Charles Steele
  • Patent number: 10082673
    Abstract: It is an object to provide a small and inexpensive laser light source device capable of efficiently focusing rays of laser light from a plurality of laser light sources so as to increase output, and to provide an inexpensive and small video display device. The plurality of laser light source units are arranged in such manner that the plurality of laser light source units adjacent to each other adjoin each other in series. The laser light source device further includes a second reflection mirror reflecting, in a third direction, a ray of laser light reflected in a second direction. The second reflection mirror is held by a mirror holder belonging to one laser light source unit among the plurality of laser light source units.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: September 25, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Takumi Kijima
  • Patent number: 10061119
    Abstract: A light scanning apparatus, including: a light source; a deflection unit configured to deflect a light beam emitted from the light source; a reflecting mirror configured to reflect the light beam to a photosensitive member; a housing; a first support portion provided in the housing to support one end of the reflecting mirror; a second support portion provided in the housing to support the other end of the reflecting mirror; a first leaf spring configured to press the reflecting mirror at the one end to apply an urging force for urging the reflecting mirror against the first support portion; and a second leaf spring configured to press the reflecting mirror at the other end to apply an urging force for urging the reflecting mirror against the second support portion, wherein a pressing force of the first leaf spring is larger than a pressing force of the second leaf spring.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 28, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Ogura, Yuichiro Imai
  • Patent number: 10061020
    Abstract: A light detection and ranging (LIDAR) apparatus includes dual beam scanners with dual beam steering. A first beam scanner in the LIDAR apparatus scans a wider area in one or more of a first plurality of scan patterns, and a second beam scanner in the LIDAR apparatus scans a narrower area in one or more of a second plurality of scan patterns different from the first plurality of scan patterns.
    Type: Grant
    Filed: September 20, 2015
    Date of Patent: August 28, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Volodimir Slobodyanyuk, Evgeni Petrovich Gousev, Karim Arabi
  • Patent number: 10062016
    Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: August 28, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Nobuhiro Shirai
  • Patent number: 9971272
    Abstract: The present invention relates to an optical scanning device and an image forming apparatus. In order to suppress jitter, the degree of convergence of a first incident optical system and the degree of convergence of a second incident optical system are both equal to or greater than 0, and the degree of convergence of the second incident optical system is greater than the degree of convergence of the first incident optical system. An angle of incidence, within a sub-scanning section, of a light beam incident on a deflection surface of an optical deflector from the second incident optical system is less than an angle of incidence, within the sub-scanning section, of a light beam incident on the deflection surface of the optical deflector from the first incident optical system.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: May 15, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Fukuhara
  • Patent number: 9874745
    Abstract: A collimation assembly includes a body, at least four light sources, and at least four collimation lenses. The body has inner surfaces that define at least four hollow portions extending through the body between opposed first and second sides thereof, each hollow portion having opposed first and second openings at the first and second sides of the body, respectively. Each light source is disposed at the first opening of one of the at least four hollow portions and controllable to emit a light beam therethrough. Each collimation lens is disposed at the second opening of one of the at least four hollow portions to receive the light beam emitted by the light source disposed at the first opening and diverge the light beam as the light beam passes through the collimation lens. The at least four light sources and the at least four collimation lenses are supported by the body.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: January 23, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
  • Patent number: 9782980
    Abstract: An optical scanning device includes a light source, a deflector, and a plurality of scanning lenses. A scanning lens lying closest to the deflector has a positive refractive power and the incident surface of it allows the oblique angle ? of the light beam entering the incident surface to vary from a center to an end of the incident surface. The incident surface satisfies the following conditions, where ?? is the amount of change and d? is the rate of change in the oblique angle ? of the light beam in the main scanning direction, d2? is the rate of change in d?, and ?2? is the amount of change in ??: d2?<|0.036| when ?2? increases from the center to the end in the main scanning direction; and d2?<|0.061| when ?2? decreases from the center to the end in the main scanning direction.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: October 10, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Shingo Yoshida
  • Patent number: 9683938
    Abstract: A scanning system for fluorescent imaging includes a sample holder configured to hold a sample therein, the sample holder defining a sample holding region. A scanner head spans the sample holding region and is movable relative to the sample holder. An array of light sources is disposed on an opposing side of the sample holder and is angled relative thereto. Respective controller are operably coupled to the scanner head and the array of light sources, wherein one controller selectively actuates a one or more rows of the array of light sources and another controller controls movement of the scanner head to capture fluorescent light emitted from within the sample holder in response to illumination from the actuated light sources. A filter designed to filter out scattered light from the sample may be interposed between the sample holder and the scanner head.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: June 20, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Aydogan Ozcan, Zoltan Gorocs, Yuye Ling, Meng Dai Yu
  • Patent number: 9678455
    Abstract: The optical scanning device includes a polygon mirror, one or more planar mirrors for reflecting the beam light so as to be led to a photosensitive drum, and a pressing member for pressing a back surface of a final planar mirror. The final planar mirror has a glass plate for allowing the beam light to pass therethrough and a reflection layer arranged on an opposite surface of the glass plate. The beam light passes through the glass plate and is reflected at the opposite surface side, so that a scanning line is curved on a surface to be scanned in a convex shape to one side in a sub-scanning direction. The final planar mirror is pressed by the pressing member so as to be curved, so that the scanning line on the surface to be scanned is adjustable to a flat shape.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 13, 2017
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Hiroki Takahashi
  • Patent number: 9664901
    Abstract: A collimation assembly includes a body, at least four light sources, and at least four collimation lenses. The body has inner surfaces that define at least four hollow portions extending through the body between opposed first and second sides thereof, each hollow portion having opposed first and second openings at the first and second sides of the body, respectively. Each light source is disposed at the first opening of one of the at least four hollow portions and controllable to emit a light beam therethrough. Each collimation lens is disposed at the second opening of one of the at least four hollow portions to receive the light beam emitted by the light source disposed at the first opening and diverge the light beam as the light beam passes through the collimation lens. The at least four light sources and the at least four collimation lenses are supported by the body.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: May 30, 2017
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
  • Patent number: 9658561
    Abstract: An image forming device scans and exposes a photoreceptor with a luminous flux by a light scanning device, which includes a polygon mirror that deflects the luminous flux and scans the photoreceptor in a main scanning direction, a correction unit that corrects a scanning position of the luminous flux in the main scanning direction such that the scanning position of the luminous flux coincides with each reference position, and a position deviation detection unit that detects the deviation amount of the scanning position of the luminous flux in a sub scanning direction. The correction unit corrects the scanning position of the luminous flux in the main scanning direction such that a screen line with an aimed screen angle is formed by scanning with the luminous flux whose scanning position in the sub scanning direction has deviated by the deviation amount detected by the position deviation detection unit.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 23, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Ryo Hasegawa
  • Patent number: 9658449
    Abstract: There is provided a light scanning apparatus that is free from main scanning jitter and allows size reduction of a deflector. The light scanning apparatus has a plurality of light sources, a deflector that deflects a plurality of light fluxes emitted from a plurality of light sources to scan a plurality of scanned surfaces along a main scanning direction, and a first stop arranged between the plurality of light sources and the deflector and provided with an aperture that regulates the width of the plurality of light fluxes with respect to the main scanning direction. The number of apertures of the first stop is smaller than the number of light sources.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: May 23, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Genichiro Kudo
  • Patent number: 9625710
    Abstract: The optical element is a long optical element obtained by detaching a long main body part connected to a runner part via a gate part including an optical part from the gate part and chipping the detached main body, the optical part including at least a first optical surface to allow light to pass there through or to reflect light. The first optical surface has a curved surface that is curved on the short direction at least at the longitudinal end, while the first edge of the first optical surface side on the end surface of gate part side in the main body part is curved according to the curved surface example of the first optical surface. The boundary surface between the main body part and the gate part is formed so as to be narrower than the end surface of the gate part side of the main body part.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 18, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Atsushi Naito, Hiroshi Takagi, Shinichiro Hara, Toshiyuki Majima, Naoki Kaneko, Takao Arakawa
  • Patent number: 9582084
    Abstract: An interactive projector includes a projection section, a plurality of cameras, and a position detection section for detecting a three-dimensional position of the pointing element based on images captured by the plurality of cameras. Defining a unit vector representing a normal direction of the projected screen as a projected-screen normal vector, a unit vector representing a direction of an optical axis of the first camera as a first optical axis vector, and a unit vector representing a direction of an optical axis of the second camera as a second optical axis vector, the first camera and the second camera are arranged such that an absolute value of an inner product of the second optical axis vector and the projected-screen normal vector is smaller than an absolute value of an inner product of the first optical axis vector and the projected-screen normal vector.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: February 28, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Shinji Kubota
  • Patent number: 9571688
    Abstract: An optical scanning apparatus includes first and second light source units including respective light sources; a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources included in the first and second light source units; and a positioning member including a first abutting portion on which the first light source unit abuts and a second abutting portion on which the second light source unit abuts, the positioning member positioning the first and second light source units. The first and second light source units are positioned by the positioning member and arranged next to each other in a rotation axis direction of the rotating polygon mirror. The positioning member is a single member disposed between the first and second light source units in the rotation axis direction.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: February 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taku Murotani, Kunihiro Niwa, Junya Azami, Tetsuya Nishiguchi, Hisanori Kobayashi