Light-emitting device, optical device, and information processing apparatus

Patent metadata

Field	Value
Publication number	US-11599610-B2
Application number	US-201916708348-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Mar 5, 2019
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

A light-emitting device includes a light diffusing member that diffuses light emitted from a light source so that an object to be measured is irradiated with the light; and a holding unit that holds the light diffusing member and is provided on a wire connected to the light source so as to be located in an uncoated region of the wire.

First claim

What is claimed is:

1. A light-emitting device comprising:
a light diffusing member that diffuses light emitted from a light source so that an object to be measured is irradiated with the light; and
a holding unit that holds the light diffusing member and is provided on a wire connected to the light source so as to be located in an uncoated region of the wire,
wherein
the light source has an anode electrode and a cathode electrode; and
the wire is at least one of an anode wire connected to the anode electrode and a cathode wire connected to the cathode electrode,
the light source is a light-emitting element array that has a first side surface and a second side surface that face each other and a third side surface and a fourth side surface that connect the first side surface and the second side surface and face each other; and
the holding unit is provided on the anode wire provided on a substrate so as to be located in an uncoated region of the anode wire on both a first side surface side and a second side surface side.

2. The light-emitting device according to claim 1 , wherein
the wire is an anode wire connected to the anode electrode and a cathode wire connected to the cathode electrode.

3. The light-emitting device according to claim 1 , wherein
the holding unit is provided on the cathode wire provided on at least one of a third side surface side and a fourth side surface side so as to be located in an uncoated region of the cathode wire.

4. The light-emitting device according to claim 1 , wherein
the holding unit is provided on the cathode wire provided on a third side surface side and a fourth side surface side so as to be located in an uncoated region of the cathode wire.

5. The light-emitting device according to claim 1 , wherein
the light source is a light-emitting element array that has a first side surface and a second side surface that face each other and a third side surface and a fourth side surface that connect the first side surface and the second side surface and face each other; and
the holding unit is provided on the anode wire provided on a substrate on a first side surface side, a second side surface side, and a third side surface side so as to be located in an uncoated region of the anode wire.

6. The light-emitting device according to claim 1 , wherein
the holding unit is made of ceramic.

7. An optical device comprising:
the light-emitting device according to claim 1 ; and
a light receiving unit that receives light emitted from the light source of the light-emitting device and reflected by the object to be measured,
wherein the light receiving unit outputs a signal corresponding to a period from the emission of the light from the light source to the reception of the light by the light receiving unit.

8. An information processing apparatus comprising:
the optical device according to claim 7 ; and
a shape specifying unit that specifies a three-dimensional shape of the object to be measured based on the light emitted from the light source of the optical device, reflected by the object to be measured, and received by the light receiving unit of the optical device.

9. The information processing apparatus according to claim 8 , further comprising an authentication processing unit that performs authentication processing concerning use of the information processing apparatus based on a result of the specifying of the shape specifying unit.

10. A light-emitting device comprising:
a light diffusing member that diffuses light emitted from a light source so that an object to be measured is irradiated with the light; and
a holding unit that holds the light diffusing member and is provided on a wire connected to the light source so as to be located in an uncoated region of the wire,
wherein
the light source has an anode electrode and a cathode electrode; and
the wire is at least one of an anode wire connected to the anode electrode and a cathode wire connected to the cathode electrode,
the holding unit is provided on the cathode wire provided on at least one of a third side surface side and a fourth side surface side so as to be located in an uncoated region of the cathode wire.

11. The light-emitting device according to claim 10 , wherein
the wire is an anode wire connected to the anode electrode and a cathode wire connected to the cathode electrode.

12. The light-emitting device according to claim 10 , wherein
the holding unit is provided on the cathode wire provided on a third side surface side and a fourth side surface side so as to be located in an uncoated region of the cathode wire.

13. The light-emitting device according to claim 10 , wherein
the holding unit is made of ceramic.

14. An optical device comprising:
the light-emitting device according to claim 10 ; and
a light receiving unit that receives light emitted from the light source of the light-emitting device and reflected by the object to be measured,
wherein the light receiving unit outputs a signal corresponding to a period from the emission of the light from the light source to the reception of the light by the light receiving unit.

15. A light-emitting device comprising:
a light diffusing member that diffuses light emitted from a light source so that an object to be measured is irradiated with the light; and
a holding unit that holds the light diffusing member and is provided on a wire connected to the light source,
wherein
the light source has an anode electrode and a cathode electrode; and
the wire is an anode wire connected to the anode electrode,
the light source is a light-emitting element array that has a first side surface and a second side surface that face each other and a third side surface and a fourth side surface that connect the first side surface and the second side surface and face each other; and
the holding unit is provided on the anode wire provided on a substrate so as to be located in a region of the anode wire on both a first side surface side and a second side surface side.

16. The light-emitting device according to claim 15 , wherein
the holding unit is provided on the cathode wire provided on at least one of a third side surface side and a fourth side surface side so as to be located in an uncoated region of the cathode wire.

Assignees

• Fujifilm Business Innovation Corp

Inventors

• MINAMIRU Takeshi
• Inada Satoshi
• Ono Kenichi
• Higuchi Takafumi
• Otsuka Tsutomu

Classifications

• H10F55/20

  wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers · CPC title

• G01S17/36

  with phase comparison between the received signal and the contemporaneously transmitted signal · CPC title

• G01S7/4816

  of receivers alone · CPC title

• G06F21/32 Primary

  using biometric data, e.g. fingerprints, iris scans or voiceprints · CPC title

• G01S7/4814

  of transmitters alone · CPC title