公开(公告)号：US20180164595A1

公开(公告)日：2018-06-14

申请号：US15579750

申请日：2016-04-26

Applicant: QD LASER, INC. ,  THE UNIVERSITY OF TOKYO

Inventor： Yasuhiko ARAKAWA ,  Mitsuru SUGAWARA ,  Makoto SUZUKI ,  Michio ARAI

IPC: G02B27/02 ,  G02B17/06 ,  G02B27/09

CPC classification number: G02B27/024 ,  G02B17/06 ,  G02B26/105 ,  G02B27/0093 ,  G02B27/017 ,  G02B27/0977 ,  G02B2027/0187 ,  G09G3/002 ,  G09G3/346 ,  G09G5/00

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 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 system based on a detection result of the reflected light by the light detector.

公开(公告)号：US12149053B2

公开(公告)日：2024-11-19

申请号：US18193980

申请日：2023-03-31

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation ,  QD LASER, Inc.

Inventor： Hitoshi Yamada ,  Yuki Kamata ,  Koichi Oyama ,  Yutaka Ohnishi ,  Kenichi Nishi ,  Keizo Takemasa

IPC: H01S5/34 ,  C09K11/74 ,  B82Y20/00

Abstract: In a semiconductor device, a quantum dot group includes a stack of plural quantum dot layers having different central wavelengths at which respective gains are maximum. A part of or all of the quantum dot layers are stacked so that the central wavelengths sequentially shifts along a stacking direction. The quantum dot group includes a longest wavelength layer group composed of some quantum dot layers including a longest wavelength layer having a longest central wavelength and at least one quantum dot layer stacked on the longest wavelength layer. The longest wavelength layer or the longest wavelength layer group has a larger gain at the central wavelength than the gain at the central wavelength of each of the other quantum dot layers.

公开(公告)号：US11717157B2

公开(公告)日：2023-08-08

申请号：US16650798

申请日：2018-09-12

Applicant: QD LASER, INC.

Inventor： Kenji Yasui ,  Makoto Suzuki ,  Mitsuru Sugawara ,  Kinya Hasegawa

IPC: A61B3/10 ,  A61B3/12 ,  A61B3/00 ,  A61B3/024

CPC classification number: A61B3/1225 ,  A61B3/0025 ,  A61B3/0058 ,  A61B3/0091 ,  A61B3/024 ,  A61B3/1025

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.

公开(公告)号：US20220196961A1

公开(公告)日：2022-06-23

申请号：US17593575

申请日：2020-03-25

Applicant: QD Laser, Inc.

Inventor： Makoto SUZUKI ,  Kenji YASUI ,  Kazutaka SAITO

IPC: G02B7/02 ,  G03B21/20 ,  G02B7/16 ,  G02B26/10

Abstract: An image relay device that projects laser light representing an image emitted from a projection device onto the retina is provided. The image relay device includes a projection device, a first optical member, and a second optical member. The projection device includes a light source configured to emit laser light and a scan unit configured to scan the laser light based on image data. The first optical member receives an image light from the projection device and converts the image light which is a parallel light, to light beams of convergent light. The second optical member converts the light beams output from the first optical member into parallel light.

公开(公告)号：US20220158415A1

公开(公告)日：2022-05-19

申请号：US17501497

申请日：2021-10-14

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation ,  QD LASER, Inc.

Inventor： Yuki KAMATA ,  Hiroyuki TARUMI ,  Koichi OYAMA ,  Keizo TAKEMASA ,  Kenichi NISHI ,  Yutaka ONISHI

IPC: H01S5/34 ,  H01S5/042 ,  H01S5/10

Abstract: The semiconductor laser device includes: an activation layer having at least one first quantum dot layer and at least one second quantum dot layer having a longer emission wavelength than the first quantum dot layer. The gain spectrum of the active layer has the maximum values at the first wavelength and the second wavelength longer than the first wavelength corresponding to the emission wavelength of the first quantum dot layer and the emission wavelength of the second quantum dot layer, respectively. The maximum value of the gain spectrum at the first wavelength is defined as the first maximum value, and the maximum value of the gain spectrum at the second wavelength is defined as the second maximum value. The first maximum value is larger than the second maximum value.

公开(公告)号：US11158034B2

公开(公告)日：2021-10-26

申请号：US16318263

申请日：2017-08-07

Applicant: QD LASER, INC.

Inventor： Seiji Morino ,  Makoto Suzuki ,  Manabu Ishimoto

IPC: G06T7/00 ,  G02B27/01 ,  G06T3/00 ,  G06T7/60 ,  H04N9/31

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 that condenses a light beam emitted from the image projection device mounted on the mounting unit; a detector on which an inspection image is projected and detected; and a controller that inspects the inspection image detected by the detector. The image inspection device inspects the image projected by the image projection device, which directly projects the image on the retina of the user.

公开(公告)号：US11129527B2

公开(公告)日：2021-09-28

申请号：US16306694

申请日：2017-06-07

Applicant: QD Laser, Inc.

Inventor： Mitsuru Sugawara ,  Makoto Suzuki ,  Kinya Hasegawa

IPC: A61B3/032 ,  A61B3/00 ,  A61B3/024 ,  A61B3/028 ,  G02B27/01 ,  G02B27/02 ,  G02B27/18 ,  G06F9/54

Abstract: A visual field/visual acuity examination system includes a retinal projection head-mounted display; and a terminal device. The terminal device outputs examination image data to the retinal projection head-mounted display; displays an image on a display; and generates an examination image based on the examination image data and display the examination image on the display. The retinal projection head-mounted display inputs the examination image data from the terminal device; generates an image light beam based on the input examination image data and control emission of the image light beam from a light source; causes a scanning minor to scan the image light beam to generate an examination image light beam; and projects the examination image light beam as the examination image on a retina of an eyeball of a test subject after converging the examination image light beam in a vicinity of a pupil of the eyeball.

公开(公告)号：US20200275833A1

公开(公告)日：2020-09-03

申请号：US16650508

申请日：2018-08-23

Applicant: QD LASER, INC.

Inventor： Seiji MORINO ,  Makoto SUZUKI ,  Mitsuru SUGAWARA ,  Kinya HASEGAWA

IPC: A61B3/032 ,  A61B3/00 ,  A61B3/024 ,  A61B3/036

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.

公开(公告)号：US10761329B2

公开(公告)日：2020-09-01

申请号：US16062424

申请日：2016-11-28

Applicant: QD LASER, INC.

Inventor： Mitsuru Sugawara ,  Makoto Suzuki ,  Michio Arai

IPC: G02B27/01 ,  G02B27/02 ,  G09G3/00 ,  G09G5/38 ,  G02B26/10 ,  G03B21/20 ,  G06F3/01 ,  G09G3/34

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.

公开(公告)号：US20200229694A1

公开(公告)日：2020-07-23

申请号：US16650798

申请日：2018-09-12

Applicant: QD LASER, INC.

Inventor： Kenji YASUI ,  Makoto SUZUKI ,  Mitsuru SUGAWARA ,  Kinya HASEGAWA

IPC: A61B3/12 ,  A61B3/10 ,  A61B3/00 ,  A61B3/024

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.