Patents Assigned to QD Laser Inc.
  • Patent number: 10921598
    Abstract: In the first embodiment and the second embodiment, the case where an image is projected on the retina 52 of one of the eyes 50 has been described, but an image may be projected on the retinas 52 of both eyes 50. In addition, the scan mirror 14 has been described as an example of a scan unit, but the scan unit may be any element as long as it can scan a light beam. For example, other components such as potassium tantalate niobate (KTN) crystal that is an electro-optic material may be used as the scan unit. The case where the light beam is a laser beam has been described as an example, but the light beam may be light other than the laser beam.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: February 16, 2021
    Assignee: QD LASER, INC.
    Inventors: Makoto Suzuki, Megumi Yamamoto
  • Patent number: 10924716
    Abstract: An image projection device includes: an optical component reflecting an image light beam that has been converted into a substantially parallel light by a lens and scanned by a scanner; a projection mirror irradiating a retina with the reflected image light beam; a light beam blocking unit located on a light path between the scanner and the lens and having an aperture, wherein the projection mirror has a first region and a second region having a larger light condensing power than the first region, and a light condensing power in a third region, reflecting a light beam to be emitted to the first region of the scanned image light beam, of the optical component is greater than that in a fourth region, reflecting a light beam to be emitted to the second region of the scanned image light beam, of the optical component.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: February 16, 2021
    Assignee: QD LASER, INC.
    Inventors: Makoto Suzuki, Kinya Hasegawa
  • Publication number: 20200342582
    Abstract: An image inspection device includes: a mounting unit on which an image projection device that directly projects an image on a retina of a user is to be mounted; a condensing lens configured to condense a light beam emitted from the image projection device mounted on the mounting unit; and a target projection unit on which an inspection image is to be projected by irradiation with the light beam condensed by the condensing lens; and an inspection unit configured to inspect the inspection image projected on the target projection unit.
    Type: Application
    Filed: August 7, 2017
    Publication date: October 29, 2020
    Applicant: QD LASER, INC.
    Inventors: Seiji MORINO, Makoto SUZUKI, Manabu ISHIMOTO
  • Publication number: 20200275833
    Abstract: Provided is a vision test device including: a projection unit 10 that projects an image on a retina of a subject with use of a laser beam 50 by two-dimensionally scanning the laser beam; a beam diameter setting unit that sets a beam diameter of the laser beam; and a numerical aperture setting unit that sets a numerical aperture of the laser beam, wherein the projection unit projects, on the retina, a test image for measuring visual information of the subject with use of a laser beam having the set beam diameter and the set numerical aperture.
    Type: Application
    Filed: August 23, 2018
    Publication date: September 3, 2020
    Applicant: QD LASER, INC.
    Inventors: Seiji MORINO, Makoto SUZUKI, Mitsuru SUGAWARA, Kinya HASEGAWA
  • Patent number: 10761329
    Abstract: An image projection device includes: a projection unit that projects an image light beam forming an image onto a pupil of an eyeball of a user to project the image onto a retina of the eyeball; a detection unit that detects a direction in which the pupil has moved relative to a face of the user and a speed of movement of the pupil; and a control unit that performs different controls of the image when the pupil has moved at different speeds in a same direction.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: September 1, 2020
    Assignee: QD LASER, INC.
    Inventors: Mitsuru Sugawara, Makoto Suzuki, Michio Arai
  • Publication number: 20200229694
    Abstract: A visual sense examination device includes: a beam source that emits a visible beam and an invisible beam; a visible beam optical system that includes a first scanner scanning the visible beam; an invisible beam optical system that includes a second scanner scanning the invisible beam; a detector that detects the invisible beam reflected by a retina of a subject; a controller that performs a first control; a synthesizer that synthesizes the visible beam scanned by the first scanner and the invisible beam scanned by the second scanner; and wherein scanning angles of the visible beam by the first scanner and the invisible beam by the second scanner are substantially the same, and projectable ranges of the visible beam scanned by the first scanner and the invisible light scanned by the second scanner are substantially the same on the retina of the subject.
    Type: Application
    Filed: September 12, 2018
    Publication date: July 23, 2020
    Applicant: QD LASER, INC.
    Inventors: Kenji YASUI, Makoto SUZUKI, Mitsuru SUGAWARA, Kinya HASEGAWA
  • Publication number: 20200209629
    Abstract: An image projection device includes: a light source 10 that emits a laser beam 40; a control unit 32 that generates the laser beam 40 based on input image data, and controls emission of the laser beam 40 from the light source 10; a scan mirror 14 that scans the laser beam 40 emitted from the light source 10 to emit a scanning light 42; and a projection unit 16 that irradiates a retina 52 of an eye 50 of a user with the scanning light 42 to project an image on the retina 52, wherein the projection unit 16 includes an optical system 18 which converges the scanning light 42 emitted from the scan mirror 14 on a virtual plane 62, which is located outside the eye 50 of the user, at an angle substantially equal to a scan angle of the scan mirror 14, and an optical system 24, which converges the scanning light 42 that has passed through the virtual plane 62 on a virtual plane 64, which is located inside the eye 50 of the user and near a pupil 54, at an angle substantially equal to an emission angle from the virtual p
    Type: Application
    Filed: March 14, 2018
    Publication date: July 2, 2020
    Applicant: QD LASER, INC.
    Inventors: Makoto SUZUKI, Megumi YAMAMOTO
  • Patent number: 10659743
    Abstract: An image projection device includes: a first mirror oscillating to scan an image light beam forming an image projected onto a retina of a user; a light source emitting the image light beam and a detection light beam to the first mirror at different timings; a second mirror having a first region reflecting the image light beam reflected by the first mirror to the retina and a second region reflecting the detection light beam reflected by the first mirror in a direction different from a direction in which the image light beam is reflected, and scanning neither the image light beam nor the detection light beam reflected by the first mirror; a detector detecting the detection light beam reflected by the second region; and a controller adjusting oscillation of the first mirror and an emission timing of the image light beam based on a detection result by the detector.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 19, 2020
    Assignees: QD LASER, INC., THE UNIVERSITY OF TOKYO
    Inventors: Yasuhiko Arakawa, Mitsuru Sugawara, Makoto Suzuki, Shuichi Tojo
  • Patent number: 10634904
    Abstract: An image projection device includes: a projection unit that irradiates a pupil 40 of an eyeball 36 of a user with an image light beam 34a forming an image to project the image onto a retina 38 of the eyeball; a detection unit that detects a direction 52 in which the pupil has moved relative to a face of the user; and a control unit that controls the projection unit based on a detected direction in which the pupil has moved so that the pupil is irradiated with the image light beam and the image is moved in a direction opposite to the direction in which the pupil has moved with respect to a position on which the image has been projected before a move of the pupil in a coordinate system visually recognized by the user.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: April 28, 2020
    Assignee: QD LASER, INC.
    Inventors: Mitsuru Sugawara, Makoto Suzuki, Michio Arai
  • Patent number: 10627631
    Abstract: The present invention is an image projection device that includes: a light source 12 that emits a laser beam 34; a scanning mirror 14 that two-dimensionally scans the laser beam 34 emitted from the light source 12; and a projection mirror 24 that projects scanned light onto a retina 26 of an eyeball 22 of a user to project an image onto the retina 26, the scanned light being composed of the laser beam 34 that has been scanned by the scanning mirror 14, wherein the laser beam 34 emitted from the light source 12 is scanned by using a part of an operating range of the scanning mirror 14.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: April 21, 2020
    Assignees: QD LASER, INC., THE UNIVERSITY OF TOKYO
    Inventors: Yasuhiko Arakawa, Mitsuru Sugawara, Makoto Suzuki
  • Patent number: 10578871
    Abstract: The present display device is a retinal scan display device including: a projection optical system configured to project an image to a retina of an eye; a distortion correcting unit configured to correct a distortion of the image; an image inverting unit configured to invert the image; and a storage unit configured to store correction data for correcting the distortion of the image when the image is projected to a left eye and correction data for correcting the distortion of the image when the image is projected to a right eye, wherein, based on a switching signal that represents that a side at which the projection optical system is arranged has been switched from one eye side to the other eye side, the distortion correcting unit performs distortion correction, by switching from correction data corresponding to one eye to correction data corresponding to the other eye, and the image inverting unit performs image inversion.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: March 3, 2020
    Assignees: MITSUMI ELECTRIC CO., LTD., QD Laser, Inc.
    Inventors: Misato Abe, Kimiyuki Ohba, Mitsuru Sugawara, Makoto Suzuki
  • Publication number: 20200014891
    Abstract: An image projection device includes: an optical component reflecting an image light beam that has been converted into a substantially parallel light by a lens and scanned by a scanner; a projection mirror irradiating a retina with the reflected image light beam; a light beam blocking unit located on a light path between the scanner and the lens and having an aperture, wherein the projection mirror has a first region and a second region having a larger light condensing power than the first region, and a light condensing power in a third region, reflecting a light beam to be emitted to the first region of the scanned image light beam, of the optical component is greater than that in a fourth region, reflecting a light beam to be emitted to the second region of the scanned image light beam, of the optical component.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 9, 2020
    Applicant: QD LASER, INC.
    Inventors: Makoto SUZUKI, Kinya HASEGAWA
  • Publication number: 20190353897
    Abstract: An image projection device includes: a light source emitting a light beam; an image input unit inputting image data; a control unit generating an image light beam based on the input image data, and controlling emission of the image light beam from the light source; a scan unit scanning the image light beam emitted from the light source; and a projection optical member illuminating a retina of an eyeball of a user with the image light beam scanned by the scan unit, and projecting an image onto the retina, wherein a diameter of the image light beam at a time when the image light beam enters a cornea of the eyeball is not smaller than 310 ?m and not larger than 800 ?m, and a user having an original visual acuity in a range of 0.04 to 1.2 has an acquired visual acuity of 0.4 or higher.
    Type: Application
    Filed: October 5, 2017
    Publication date: November 21, 2019
    Applicant: QD LASER INC.
    Inventors: Makoto SUZUKI, Kenji YASUI, Mitsuru SUGAWARA
  • Patent number: 10444519
    Abstract: An image projection device includes: one light source unit emitting an image light beam, which forms an image, of visible light and a checking light beam of visible light; an optical system projecting the image light beam emitted from emitted from the one light source unit onto a first surface region of an eye of a user to project the image light beam onto a retina of the user, and projecting the checking light beam emitted from the one light source unit onto a second surface region, which is distant from the first surface region, of the eye of the user; a light detector detecting a reflected light that is the checking light beam reflected by the eye of the user; and a controller controlling at least one of the one light source unit and the optical stem based on a detection result of the reflected light by the light detector.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: October 15, 2019
    Assignees: QD LASER, INC., THE UNIVERSITY OF TOKYO
    Inventors: Yasuhiko Arakawa, Mitsuru Sugawara, Makoto Suzuki, Michio Arai
  • Patent number: 10409146
    Abstract: A terminal device (300) includes a projection target holding unit that holds projection information to be projected by an image projection device (200), a storage unit that stores position information indicating a position on the retina of a user (P) at which the projection information is to be projected, a position information acquisition unit that acquires the position information from the storage unit, an image data generation unit that generates image data (D) of an image (202G) that projects the projection information at the position indicated by the position information, and an image output processing unit that outputs the image data (D) to the image projection device (200).
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: September 10, 2019
    Assignee: QD Laser, Inc.
    Inventors: Mitsuru Sugawara, Makoto Suzuki, Kinya Hasegawa
  • Publication number: 20180373041
    Abstract: An image projection device includes: a projection unit that projects an image light beam forming an image onto a pupil of an eyeball of a user to project the image onto a retina of the eyeball; a detection unit that detects a direction in which the pupil has moved relative to a face of the user and a speed of movement of the pupil; and a control unit that performs different controls of the image when the pupil has moved at different speeds in a same direction.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 27, 2018
    Applicant: QD LASER, INC.
    Inventors: Mitsuru SUGAWARA, Makoto SUZUKI, Michio ARAI
  • Publication number: 20180373024
    Abstract: An image projection device includes: a projection unit that irradiates a pupil 40 of an eyeball 36 of a user with an image light beam 34a forming an image to project the image onto a retina 38 of the eyeball; a detection unit that detects a direction 52 in which the pupil has moved relative to a face of the user; and a control unit that controls the projection unit based on a detected direction in which the pupil has moved so that the pupil is irradiated with the image light beam and the image is moved in a direction opposite to the direction in which the pupil has moved with respect to a position on which the image has been projected before a move of the pupil in a coordinate system visually recognized by the user.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 27, 2018
    Applicant: QD LASER, INC.
    Inventors: Mitsuru SUGAWARA, Makoto SUZUKI, Michio ARAI
  • Publication number: 20180364489
    Abstract: The present invention is an image projection device that includes: a light source 12 that emits a laser beam 34; a scanning mirror 14 that two-dimensionally scans the laser beam 34 emitted from the light source 12; and a projection mirror 24 that projects scanned light onto a retina 26 of an eyeball 22 of a user to project an image onto the retina 26, the scanned light being composed of the laser beam 34 that has been scanned by the scanning mirror 14, wherein the laser beam 34 emitted from the light source 12 is scanned by using a part of an operating range of the scanning mirror 14.
    Type: Application
    Filed: August 28, 2018
    Publication date: December 20, 2018
    Applicants: QD LASER INC., THE UNIVERSITY OF TOKYO
    Inventors: Yasuhiko ARAKAWA, Mitsuru SUGAWARA, Makoto SUZUKI
  • Patent number: 10088682
    Abstract: The present invention is an image projection device that includes: a light source 12 that emits a laser beam 34; a scanning mirror 14 that two-dimensionally scans the laser beam 34 emitted from the light source 12; and a projection mirror 24 that projects scanned light onto a retina 26 of an eyeball 22 of a user to project an image onto the retina 26, the scanned light being composed of the laser beam 34 that has been scanned by the scanning mirror 14, wherein the laser beam 34 emitted from the light source 12 is scanned by using a part of an operating range of the scanning mirror 14.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 2, 2018
    Assignees: QD LASER, INC., THE UNIVERSITY OF TOKYO
    Inventors: Yasuhiko Arakawa, Mitsuru Sugawara, Makoto Suzuki
  • Publication number: 20180252920
    Abstract: The present display device is a retinal scan display device including: a projection optical system configured to project an image to a retina of an eye; a distortion correcting unit configured to correct a distortion of the image; an image inverting unit configured to invert the image; and a storage unit configured to store correction data for correcting the distortion of the image when the image is projected to a left eye and correction data for correcting the distortion of the image when the image is projected to a right eye, wherein, based on a switching signal that represents that a side at which the projection optical system is arranged has been switched from one eye side to the other eye side, the distortion correcting unit performs distortion correction, by switching from correction data corresponding to one eye to correction data corresponding to the other eye, and the image inverting unit performs image inversion.
    Type: Application
    Filed: September 26, 2016
    Publication date: September 6, 2018
    Applicants: MITSUMI ELECTRIC CO., LTD., QD Laser, Inc.
    Inventors: Misato ABE, Kimiyuki OHBA, Mitsuru SUGAWARA, Makoto SUZUKI