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公开(公告)号：US20200014891A1
公开(公告)日：2020-01-09
申请号：US16340124
申请日：2017-09-26
Applicant: QD LASER, INC.
Inventor： Makoto SUZUKI , Kinya HASEGAWA
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.
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公开(公告)号：US10409146B2
公开(公告)日：2019-09-10
申请号：US16306966
申请日：2017-06-08
Applicant: QD Laser, Inc.
Inventor： Mitsuru Sugawara , Makoto Suzuki , Kinya Hasegawa
IPC: G03B21/20 , G02B27/02 , G09G5/38 , G16H50/00 , A61B3/024 , A61B3/032 , H04N9/31 , G02B27/01 , G02B26/12 , G09G3/02
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). The image projection device (200) includes a light source unit that emits a light beam, an image input unit that inputs the image data (D) from the terminal device (300), a control unit that generates an image light beam based on the input image data (D) and controls emission of the image light beam from the light source unit, a scanning mirror that scans the image light beam, and a projection unit that projects the image light beam on the retina of the eyeball of the user (P) as the image (202G) represented by the image data (D).
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公开(公告)号：US09865771B2
公开(公告)日：2018-01-09
申请号：US15110991
申请日：2015-01-07
Applicant: QD LASER, INC. , UNIVERSITY OF SHEFFIELD
Inventor： Kenichi Nishi , Takeo Kageyama , Keizo Takemasa , Mitsuru Sugawara , Richard Hogg , Siming Chen
Abstract: A semiconductor light-emitting element includes: a lower clad layer 12 that is provided on a substrate 10; an active layer 20 that is provided on the lower clad layer 12 and includes a quantum well layer 24 and a plurality of quantum dots 28 sandwiching a second barrier layer 22b together with the quantum well layer 24; and an upper clad layer 14 that is provided on the active layer 20, wherein a distance D between the quantum well layer 24 and the plurality of quantum dots 28 is smaller than an average of distances X between centers of the plurality of quantum dots 28.
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公开(公告)号：US20160336480A1
公开(公告)日：2016-11-17
申请号：US15110991
申请日：2015-01-07
Applicant: QD LASER, INC. , UNIVERSITY OF SHEFFIELD
Inventor： Kenichi NISHI , Takeo KAGEYAMA , Keizo TAKEMASA , Mitsuru SUGAWARA , Richard HOGG , Siming CHEN
Abstract: A semiconductor light-emitting element includes: a lower clad layer 12 that is provided on a substrate 10; an active layer 20 that is provided on the lower clad layer 12 and includes a quantum well layer 24 and a plurality of quantum dots 28 sandwiching a second barrier layer 22b together with the quantum well layer 24; and an upper clad layer 14 that is provided on the active layer 20, wherein a distance D between the quantum well layer 24 and the plurality of quantum dots 28 is smaller than an average of distances X between centers of the plurality of quantum dots 28.
Abstract translation: 半导体发光元件包括：设置在基板10上的下包层12; 设置在下包层12上的有源层20，包括量子阱层24和与量子阱层24一起夹着第二阻挡层22b的多个量子点28; 以及设置在有源层20上的上覆盖层14，其中量子阱层24与多个量子点28之间的距离D小于多个量子点28的中心之间的距离X的平均值。
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公开(公告)号：US20230327406A1
公开(公告)日：2023-10-12
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
CPC classification number: H01S5/3412 , C09K11/7492 , 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.
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Patent Agency Ranking
公开(公告)号：US11586038B2
公开(公告)日：2023-02-21
申请号：US16476296
申请日：2017-10-05
Applicant: QD LASER, INC.
Inventor： Makoto Suzuki , Kenji Yasui , Mitsuru Sugawara
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 μm and not larger than 800 μm, 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.
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公开(公告)号：US20210173199A1
公开(公告)日：2021-06-10
申请号：US16619437
申请日：2018-09-12
Applicant: QD LASER, INC.
Inventor： Makoto SUZUKI , Megumi YAMAMOTO , Seiji MORINO , Chizuru KANEKO
Abstract: An image projection device includes: a light source that emits a laser beam; a control unit that generates an image light beam, and controls emission of the image light beam; a scan unit that scans the image light beam to convert it into scan light; a first light converging unit that is disposed before a user's eye, converges the scan light at a first convergence point near a pupil, and then irradiates the retina with the scan light to project the image on the retina; and a second light converging unit that converges the scan light at a second convergence point before the first light converging unit, and then irradiates the first light converging unit with the scan light; wherein a scan angle of the scan light is substantially the same size as a convergence angle at which the scan light converges to the first convergence point.
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公开(公告)号：US20190353897A1
公开(公告)日：2019-11-21
申请号：US16476296
申请日：2017-10-05
Applicant: QD LASER, INC.
Inventor： Makoto SUZUKI , Kenji YASUI , Mitsuru SUGAWARA
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 μm and not larger than 800 μm, 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.
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公开(公告)号：US20190133437A1
公开(公告)日：2019-05-09
申请号：US16306694
申请日：2017-06-07
Applicant: QD Laser, Inc.
Inventor： Mitsuru SUGAWARA , Makoto SUZUKI , Kinya HASEGAWA
Abstract: A terminal device includes an image data holding unit that holds examination image data, an image output processing unit that outputs the examination image data to a visual field/visual acuity examination device, a display unit that displays an image, and a display control unit that generates an examination image based on the examination image data and displays the examination image on the display unit. The visual field/visual acuity examination device includes a light source unit that emits a light beam, an image input unit that inputs the examination image data from the terminal device, a control unit that generates an image light beam based on the input examination image data and controls emission of the image light beam from the light source unit, a scanning mirror that scans the image light beam to generate an examination image light beam, and a projection unit that projects the examination image light beam as the examination image on an eyeball of a test subject. The examination image data includes visual field examination image data of an image that is divided into a plurality of regions including identifiers, and visual acuity examination image data of an image including a visual target image of a visual target.
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公开(公告)号：US20180373024A1
公开(公告)日：2018-12-27
申请号：US16062384
申请日：2016-11-28
Applicant: QD LASER, INC.
Inventor： Mitsuru SUGAWARA , Makoto SUZUKI , Michio ARAI
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.
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