Target-oriented light emitting device, and optical module

Patent metadata

Field	Value
Publication number	US-10690323-B2
Application number	US-201716072441-A
Country	US
Kind code	B2
Filing date	Jan 24, 2017
Priority date	Jan 28, 2016
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

An embodiment relates to a target-oriented light emitting device comprising: a light emitting part for emitting light; a light focusing part for focusing the light emitted from the light emitting part; a first light adjusting part to which the light focused by in the light focusing part is incident, adjusting the orientation direction of the light, and emitting the adjusted light; and a second light adjusting part disposed between the light focusing part and the first light adjusting part so as to adjust a focal position of the light incident to the first light adjusting part.

First claim

The invention claimed is:

1. A target-oriented light-emitting device comprising;
a light-emitting unit that emits light;
a light-focusing unit that focuses the light emitted from the light-emitting unit;
a first light adjuster on which the light focused by the light-focusing unit is incident, wherein the first light adjuster moves in a three-dimensional space by moving in three axial directions to adjust an emission direction of the light; and
a second light adjuster disposed between the light-focusing unit and the first light adjuster so as to control a focal position of the light that is incident on the first light adjuster.

2. The target-oriented light-emitting device according to claim 1 , wherein the first light adjuster is moved in linkage with the second light adjuster so as to determine a divergence angle of the light emitted from the first light adjuster.

3. The target-oriented light-emitting device according to claim 1 , wherein the second light adjuster includes at least one of a liquid lens, a liquid crystal lens, and a polymer lens.

4. The target-oriented light-emitting device according to claim 1 , wherein a first surface of the second light adjuster is convex with respect to the light-focusing unit and concave with respect to the first light adjuster.

5. The target-oriented light-emitting device according to claim 1 , comprising a drive unit that moves the first light adjuster.

6. The target-oriented light-emitting device according to claim 1 , wherein the first light adjuster includes a lens group comprising two or more lenses.

7. The target-oriented light-emitting device according to claim 6 , wherein the lens group includes a first lens, a second lens, and a third lens and wherein the light-focusing unit, the second light adjuster, the first lens, the second lens, and the third lens are disposed in one direction.

8. The target-oriented light-emitting device according to claim 1 , wherein the first light adjuster is driven in a first axial direction or a second axial direction.

9. The target-oriented light-emitting device according to claim 1 , comprising a magnifying lens on which light emitted from the first light adjuster is incident.

10. An optical module comprising;
a target-oriented light-emitting device that comprises a light-emitting unit that emits light, a light-focusing unit that focuses the light emitted from the light-emitting unit, a first light adjuster on which the light focused by the light-focusing unit is incident, wherein the first light adjuster moves in a three-dimensional space by moving in three axial directions to adjust an emission direction of the light, and a second light adjuster disposed between the light-focusing unit and the first light adjuster so as to control a focal position of the light that is incident on the first light adjuster;
wherein the light-emitting unit, the light-focusing unit, the second light adjuster, and the first light adjuster are arranged on an optical axis in this order, and
wherein the light-focusing unit includes at least one lens through which the light emitted from the light-emitting unit is transmitted.

11. The target-oriented light-emitting device according to claim 1 , wherein a plurality of the light-focusing units is provided, and each light-focusing unit includes a collimator part forming parallel light and a focusing part.

12. The target-oriented light-emitting device according to claim 1 , wherein the first light adjuster includes a liquid lens or a tunable lens.

13. A target-oriented light-emitting device comprising;
a light-emitting unit that emits light;
a light-focusing unit that focuses the light emitted from the light-emitting unit;
a first light adjuster on which the light focused by the light-focusing unit is incident, wherein the first light adjuster moves in a three-dimensional space by moving in three axial directions to adjust an emission direction of the light in at least one of a first direction and a second direction; and
a second light adjuster disposed between the light-focusing unit and the first light adjuster so as to adjust an emission direction of the light in a third direction,
wherein the first, second, and third directions intersect one another.

14. The target-oriented light-emitting device according to claim 13 , wherein the first light adjuster is moved in linkage with the second light adjuster so as to determine a divergence angle of the light emitted from the first light adjuster.

15. The target-oriented light-emitting device according to claim 13 , wherein the second light adjuster includes at least one of a liquid lens, a liquid crystal lens, and a polymer lens.

16. The target-oriented light-emitting device according to claim 13 , wherein a first surface of the second light adjuster is convex with respect to the light-focusing unit and concave with respect to the first light adjuster.

17. The target-oriented light-emitting device according to claim 13 , comprising a drive unit that moves the first light adjuster to the first axial direction and the second axial direction.

18. The target-oriented light-emitting device according to claim 13 , wherein the first light adjuster includes a lens group comprising two or more lenses.

19. The target-oriented light-emitting device according to claim 18 , wherein the lens group includes a first lens, a second lens, and a third lens and wherein the light-focusing unit, the second light adjuster, the first lens, the second lens, and the third lens are disposed in one direction.

20. The target-oriented light-emitting device according to claim 13 , comprising a magnifying lens on which the light emitted from the first light adjuster is incident.

Assignees

• Lg Innotek Co Ltd

Inventors

• Joo Yang Hyun
• Lee Chang Hyuck

Classifications

• F21V23/0442

  activated by means of a sensor, e.g. motion or photodetectors · CPC title

• F21V14/02

  by movement of light sources {(in vehicle head lamps F21S41/657)} · CPC title

• G02B26/0875

  by means of one or more refracting elements · CPC title

• F21V17/02

  with provision for adjustment (F21V17/04 - F21V17/08 take precedence) · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title