公开(公告)号：US20200209629A1

公开(公告)日：2020-07-02

申请号：US16619053

申请日：2018-03-14

Applicant: QD LASER, INC.

Inventor： Makoto SUZUKI ,  Megumi YAMAMOTO

IPC: G02B27/01 ,  G02B17/06 ,  H04N9/31

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 plane 62.

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

IPC: G02B26/10 ,  G02B27/42 ,  A61B3/00 ,  A61B3/024 ,  A61B3/032 ,  H04N9/31

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.