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公开(公告)号：US20180184059A1
公开(公告)日：2018-06-28
申请号：US15579759
申请日：2016-04-26
Applicant: QD LASER, INC. , THE UNIVERSITY OF TOKYO
Inventor： Yasuhiko ARAKAWA , Mitsuru SUGAWARA , Makoto SUZUKI , Shuichi TOJO
CPC classification number: H04N9/3194 , G02B26/0833 , G02B26/101 , G02B27/0172 , G02B27/108 , G02B2027/0178 , H04N9/312 , H04N9/3135
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.
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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
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.
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公开(公告)号：US20180364489A1
公开(公告)日：2018-12-20
申请号：US16115398
申请日：2018-08-28
Applicant: QD LASER INC. , THE UNIVERSITY OF TOKYO
Inventor： Yasuhiko ARAKAWA , Mitsuru SUGAWARA , Makoto SUZUKI
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.
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公开(公告)号：US20160103324A1
公开(公告)日：2016-04-14
申请号：US14893278
申请日：2014-04-25
Applicant: THE UNIVERSITY OF TOKYO , QD LASER, INC.
Inventor： Yasuhiko ARAKAWA , Mitsuru SUGAWARA , Makoto SUZUKI
CPC classification number: G02B27/0172 , G02B26/101 , G02B26/105 , G02B27/0101 , G02B2027/011 , G02B2027/0178 , G02C11/10 , G09G3/025 , G09G5/10 , H04N3/30 , H04N5/66 , H04N9/3179
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.
Abstract translation: 本发明是一种图像投影装置，包括：发射激光束34的光源12; 对从光源12发射的激光束34进行二维扫描的扫描镜14; 以及投影镜24，其将扫描光投影到用户的眼球22的视网膜26上以将图像投影到视网膜26上，扫描光由已被扫描反射镜14扫描的激光束34组成，其中 通过使用扫描反射镜14的工作范围的一部分来扫描从光源12发射的激光束34。
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公开(公告)号：US20250044579A1
公开(公告)日：2025-02-06
申请号：US18709339
申请日：2022-11-04
Applicant: QD LASER, INC.
Inventor： Makoto SUZUKI , Seiji MORINO
Abstract: An image projection device includes a projection unit converging image light beams emitted in different directions from a scanning unit at a first convergence point in user's eye, a reflection unit converging the image light beams at a second convergence point before the projection unit, an optical member being provided between the projection unit and the reflection unit, converting the image light beams into convergent light beams, and causing the image light beams to enter the projection unit as diffusion light beams a drive unit moving the reflection unit, a detection unit detecting a direction in which user's pupil has moved, and a drive control unit controlling the drive unit to move the reflection unit so that incident positions of the image light beams on the optical member change according to the direction in which the pupil has moved.
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Patent Agency Ranking
公开(公告)号：US20180373041A1
公开(公告)日：2018-12-27
申请号：US16062424
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 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.
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公开(公告)号：US20250143561A1
公开(公告)日：2025-05-08
申请号：US18837874
申请日：2023-02-06
Applicant: QD LASER, INC.
Inventor： Makoto SUZUKI
Abstract: An image projection device includes a light source, a scanning unit that scans a light beam emitted from the light source, and an optical system that converges a plurality of light beams, which are emitted from the scanning unit at different times, at a convergence point in an eye of a user and then irradiates a retina of the user with the plurality of light beams to project an image, wherein diameters of the plurality of light beams incident on a cornea of the user are adjusted to 0.36 mm or greater and 0.46 mm or less when a half angle of a larger one of a horizontal angle of view and a vertical angle of view of an area where the retina is irradiated with the plurality of light beams at the convergence point is 10° or greater and 30° or less.
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公开(公告)号：US20230199141A1
公开(公告)日：2023-06-22
申请号：US17926953
申请日：2022-01-12
Applicant: QD LASER, INC.
Inventor： Makoto SUZUKI , Seiji MORINO
CPC classification number: H04N5/7491 , G02B26/101 , G02B26/0833
Abstract: An image projection device incudes a scanning unit that two-dimensionally scans a light beam emitted from a light source, a light guide member that is formed of a glass material through which light beams emitted from the scanning unit at different times pass, has reflection surfaces reflecting the light beams, converges the light beams reflected by the reflection surfaces at a first convergence point in the eye of the user, and then irradiates a retina of the user with the converged light beams, a first optical member that converges the light beams emitted from the scanning unit at a second convergence point before the light guide member and then causes the light beams to enter the light guide member, and a second optical member that is disposed at the second convergence point and causes the light beams to enter a last reflection surface as diffusion lights.
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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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