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.

公开(公告)号：US20220196698A1

公开(公告)日：2022-06-23

申请号：US17556789

申请日：2021-12-20

Applicant: TDK CORPORATION

Inventor： Ardalan HESHMATI ,  Mahdi HEYDARI ,  Jibran AHMED

IPC: G01P15/097 ,  G01P15/08

Abstract: In a method for determining vibrations generated by a device, first vibration measurements are received from a first accelerometer coupled to the device, the first vibration measurements comprising a first device vibration contribution and a first environmental vibration contribution, wherein the device is located within an environment comprising a plurality of devices capable of generating vibrations. Second vibration measurements are received from a second accelerometer located within the environment and not connected to the device, the second vibration measurements comprising a second device vibration contribution and a second environmental vibration contribution. The first vibration measurements and the second vibration measurements are compared. Based on the comparing, the first device vibration contribution is estimated. An operational condition of the device is determined based on the estimating, wherein the operational condition is indicative of device performance that may be impacted by device vibration contributions.

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：US20240142787A1

公开(公告)日：2024-05-02

申请号：US18383642

申请日：2023-10-25

Applicant: TDK CORPORATION

Inventor： Hideaki FUKUZAWA ,  Tsuyoshi KOMAKI ,  Ardalan HESHMATI

IPC: G02B27/18 ,  G02B5/00 ,  G02B6/42 ,  G02B26/10 ,  G02B27/01

CPC classification number: G02B27/18 ,  G02B5/005 ,  G02B6/4257 ,  G02B26/101 ,  G02B27/0172 ,  G02B26/0833

Abstract: A laser module includes a laser light source, a package in which the laser light source is housed and a light transmission window through which laser light output from the laser light source can be optically transmitted is provided on a wall portion, and an output light aperture provided inside or outside of the package and arranged in a traveling direction of the laser light to adjust an area of a passage port of the laser light.

公开(公告)号：US20240288937A1

公开(公告)日：2024-08-29

申请号：US18660696

申请日：2024-05-10

Applicant: TDK CORPORATION

Inventor： Ardalan HESHMATI ,  Hideaki FUKUZAWA

IPC: G06F3/01 ,  G02B26/08 ,  G02B26/10 ,  G02B27/01

CPC classification number: G06F3/013 ,  G02B26/0833 ,  G02B26/105 ,  G02B27/0172 ,  G02B27/0179 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A retinal projection display system includes at least one visible light source for projecting a visible light image, an infrared light source for projecting infrared light, a scanning mirror having a field of view larger than the visible light image, a reflective surface on which the visible light image is projected and on which the infrared light is reflected at least partially towards an eye of a user, wherein the reflective surface is larger than the visible light image, at least one infrared photodetector for receiving reflected infrared light that reflects off of the eye of the user, and a hardware computation module comprising a processor and a memory, the hardware computation module configured to determine a gaze direction of the user based at least in part on the reflected infrared light.