公开(公告)号：US11428926B2

公开(公告)日：2022-08-30

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 ,  A61B3/00 ,  A61B3/024 ,  A61B3/032 ,  G02B27/42 ,  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.

公开(公告)号：US10921598B2

公开(公告)日：2021-02-16

申请号：US16619053

申请日：2018-03-14

Applicant: QD LASER, INC.

Inventor： Makoto Suzuki ,  Megumi Yamamoto

IPC: H04N9/31 ,  G02B27/01 ,  G02B17/06 ,  G02B26/10

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.