公开(公告)号：US20240219723A1

公开(公告)日：2024-07-04

申请号：US18395876

申请日：2023-12-26

Applicant: TDK CORPORATION

Inventor： Tomohito MIZUNO ,  Hideaki FUKUZAWA ,  Kit Chu LAM

IPC: G02B27/01 ,  G02B27/00

CPC classification number: G02B27/0172 ,  G02B27/0093 ,  G02B27/0179 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A retinal projection device includes: a projector module including a light source that emits laser light and a movable mirror that performs scanning with the laser light; a reflector that projects an image onto a retina of a user wearing the near eye wearable device by reflecting the laser light having passed through the movable mirror and irradiating the retina with reflected light; and a controller that determines an irradiation range of the reflector to be irradiated with the laser light in accordance with a position of a pupil of the user and controls the projector module to irradiate the irradiation range with the laser light. The reflector includes a plurality of unit regions provided along a surface of a lens of the near eye wearable device, and the surface faces an eyeball of the user. The irradiation range is a part of the plurality of unit regions.

公开(公告)号：US20240272421A1

公开(公告)日：2024-08-15

申请号：US18406332

申请日：2024-01-08

Applicant: TDK CORPORATION

Inventor： Hideaki FUKUZAWA ,  Tomohito MIZUNO ,  Tsuyoshi KOMAKI ,  Ardalan HESHMATI ,  Kit Chu LAM

IPC: G02B26/10 ,  G02B26/08 ,  G02B27/01

CPC classification number: G02B26/101 ,  G02B26/0833 ,  G02B27/0172 ,  G02B2027/0178

Abstract: An optical module for displaying an image: a laser light source part with laser light emitting elements emitting laser lights having different peak wavelengths; a mirror part with an optical scanning mirror element on a second substrate integrated with the first substrate; a laser drive control part individually and independently controlling an intensity of laser light from the laser light emitting elements; a mirror drive control part controlling swinging of the optical scanning mirror element; a memory storing a lookup table that is an array of correspondence relations between each swing position of the optical scanning mirror element and a projection position of laser light from the laser light emitting elements on the image display surface; and a system control part controlling the laser drive control part and the mirror drive control part so as to control the mirror drive control part based on the lookup table.

公开(公告)号：US20240219724A1

公开(公告)日：2024-07-04

申请号：US18395890

申请日：2023-12-26

Applicant: TDK CORPORATION

Inventor： Tomohito MIZUNO ,  Hideaki FUKUZAWA ,  Kit Chu LAM

IPC: G02B27/01 ,  G02B5/08 ,  G02B27/00

CPC classification number: G02B27/0172 ,  G02B5/0875 ,  G02B27/0093 ,  G02B2027/0178

Abstract: A retinal projection device includes: a light source that emits laser light; a movable mirror that performs scanning with the laser light; and a reflector that projects an image onto a retina of a user wearing a near eye wearable device by reflecting the laser light having passed through the movable mirror and irradiating the retina with reflected light. The reflector includes a plurality of unit regions provided along a surface of a lens of the near eye wearable device, and the surface faces an eyeball of the user. Each of the plurality of unit regions is a nanostructure configured to reflect the laser light at a reflection angle corresponding to a position where the unit region is provided when the laser light having passed through the movable mirror is incident on the unit region.

公开(公告)号：US20240222928A1

公开(公告)日：2024-07-04

申请号：US18392571

申请日：2023-12-21

Applicant: TDK CORPORATION

Inventor： Hideaki FUKUZAWA ,  Tomohito MIZUNO ,  Tsuyoshi KOMAKI ,  Takashi AOYAGI ,  Ardalan HESHMATI ,  Kit Chu LAM

IPC: H01S5/02255 ,  G02B27/01 ,  H01S5/02253

CPC classification number: H01S5/02255 ,  G02B27/0172 ,  H01S5/02253 ,  G02B2027/0178

Abstract: The optical module includes a laser light source part in which a laser light emitting element is formed on one main surface of a first substrate, a mirror part in which an optical scanning mirror element is formed on one main surface of a second substrate, and a lens part in which an optical lens is formed on one main surface of a third substrate, wherein the first substrate and the third substrate are bonded via a metal bonding layer, and the optical module is configured for laser light emitted from the laser light emitting element to be reflected by the optical scanning mirror element via the optical lens.