Laser projection structure and electronic device

Patent metadata

Field	Value
Publication number	US-11163225-B2
Application number	US-201916374223-A
Country	US
Kind code	B2
Filing date	Apr 3, 2019
Priority date	Apr 10, 2018
Publication date	Nov 2, 2021
Grant date	Nov 2, 2021

Abstract

A laser projection structure is provided. The laser projection structure includes a laser projector and a sealing member. The laser projector has a light emitting face. The sealing member includes a body and a resisting portion. The body is provided to the light emitting face and joined to the laser projector. The resisting portion extends from the body in a light emission direction of the laser projector.

First claim

What is claimed is:

1. A laser projection structure, comprising:
a laser projector having a light emitting face; and
a sealing member comprising a body and a resisting portion, the body being provided to the light emitting face and joined to the laser projector, and the resisting portion extending from the body in a light emission direction of the laser projector,
wherein a width of a section of the resisting portion decreases in the light emission direction of the laser projector.

2. The laser projection structure according to claim 1 , wherein the laser projector comprises a light emitting opening defined in the light emitting face, and the resisting portion is formed in a ring shape and configure to surround the light emitting opening.

3. The laser projection structure according to claim 1 , wherein the resisting portion comprises an inner side wall and an outer side wall, and in the light emission direction of the laser projector, the inner side wall is inclined outwards, and/or the outer side wall is inclined inwards.

4. The laser projection structure according to claim 1 , wherein the body defines an accommodating cavity and is fitted over the laser projector such that the laser projector extends into the accommodating cavity.

5. The laser projection structure according to claim 4 , wherein the laser projector comprises a lens barrel, and the body is fitted over the lens barrel.

6. The laser projection structure according to claim 4 , wherein the laser projector comprises a lens barrel, a diffractive element and a protective cover, the diffractive element is received in the lens barrel, the protective cover is mounted to the lens barrel to prevent the diffractive element from coming out of the lens barrel, and the body is fitted over the protective cover.

7. The laser projection structure according to claim 6 , wherein the body comprises a top and a side, the top is attached to the protective cover, the side extends from the top, and the side and the top cooperatively define the accommodating cavity.

8. The laser projection structure according to claim 7 , wherein the resisting portion comprises an inner side wall and an outer side wall;
in the light emission direction of the laser projector, the inner side wall is inclined outwards, and the outer side wall is perpendicular to the top; or
in the light emission direction of the laser projector, the outer side wall is inclined inwards, and the inner side wall is perpendicular to the top.

9. The laser projection structure according to claim 1 , wherein the sealing member is made of silicone or rubber.

10. An electronic device, comprising a housing, a cover plate and a laser projection structure, the cover plate being mounted to the housing, and the laser projection structure comprising:
a laser projector having a light emitting face; and
a sealing member comprising a body and a resisting portion, the body being provided to the light emitting face and joined to the laser projector, and the resisting portion extending from the body in a light emission direction of the laser projector;
wherein the laser projection structure is mounted in the housing, the light emitting face faces the cover plate, and the resisting portion abuts against the cover plate and is configured to seal a gap between the light emitting face and the cover plate.

11. The electronic device according to claim 10 , wherein the body comprises a top and a side, the top is attached to the laser projector, the side extends from the top, and the side and the top cooperatively define an accommodating cavity.

12. The electronic device according to claim 10 , wherein the housing comprises a front casing and a rear casing, the cover plate is mounted to the front casing,
the laser projection structure is mounted to the front casing, and the rear casing abuts against a side of the laser projector opposite to the light emitting face; or
the electronic device further comprises a bracket mounted between the front casing and the rear casing, and the laser projection structure is mounted to the bracket.

13. The electronic device according to claim 12 , wherein the front casing defines an through hole, the laser projection structure is inserted into the through hole to be mounted to the front casing, and glue is filled between the laser projection structure and an inner wall of the through hole.

14. A laser projection structure, comprising:
a laser projector having a light emitting face; and
a sealing member comprising a body and a resisting portion, the body defining an accommodating cavity and being fitted over the laser projector, and the resisting portion extending from the body in a light emission direction of the laser projector,
wherein the laser projector comprises a light emitting opening defined in the light emitting face, the body comprises a top and a side, the top defines a light passage opening, and the light passage opening is aligned with the light emitting opening.

15. The laser projection structure according to claim 14 , wherein the resisting portion is formed in a ring shape and configure to surround the light emitting opening.

16. The laser projection structure according to claim 14 , wherein the laser projector comprises a lens barrel, a diffractive element and a protective cover, the diffractive element is received in the lens barrel, the protective cover is mounted to the lens barrel to prevent the diffractive element from coming out of the lens barrel, and the body is fitted over the protective cover.

17. The laser projection structure according to claim 16 , wherein the laser projector further comprises a substrate assembly, and the lens barrel is provided to the substrate assembly.

18. The laser projection structure according to claim 16 , wherein the protective cover and the lens barrel are fixedly coupled in a detachable manner.

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Yang Lang

Classifications

• H01S3/025

  of solid state lasers, e.g. housings or mountings · CPC title

• G02B7/025 Primary

  using glue · CPC title

• G02B5/18

  Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)} · CPC title

• G03B21/2033 Primary

  LED or laser light sources · CPC title

• G03B21/142

  Adjusting of projection optics · CPC title