Phosphor arrangement, Laser Activated Remote Phosphor (LARP) system and spotlight/headlight

Patent metadata

Field	Value
Publication number	US-10359157-B2
Application number	US-201816052689-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Aug 4, 2017
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

A phosphor arrangement for at least partly converting an excitation radiation is provided. The phosphor arrangement includes a phosphor and a fracture detector used for monitoring the phosphor. The fracture detector includes at least one line track which is operatively connected to the phosphor. The line track extends around the phosphor at least in sections with at least one loop.

First claim

What is claimed is:

1. A phosphor arrangement for at least partly converting an excitation radiation, the phosphor arrangement comprising:
a phosphor; and
a fracture detector used for monitoring the phosphor;
wherein the fracture detector comprises at least one line track which is operatively connected to the phosphor;
wherein the line track extends around the phosphor at least in sections with at least one loop.

2. The phosphor arrangement of claim 1 ,
wherein the line track is radially spaced apart from the edge of the phosphor.

3. The phosphor arrangement of claim 1 ,
wherein the line track is at least one of provided at the edge region of the phosphor or extends around an irradiation region of the phosphor.

4. The phosphor arrangement of claim 1 ,
wherein the line track extends around the phosphor at least one in the edge region or around the irradiation region in a meandering and approximately concentric fashion.

5. The phosphor arrangement of claim 1 ,
wherein the line track is arranged on at least one of a coupling-in side or a coupling-out side of the phosphor or in the phosphor.

6. The phosphor arrangement of claim 1 ,
wherein the line track extends in sections on a substrate provided for the phosphor.

7. The phosphor arrangement of claim 6 ,
wherein the line track is arranged on the substrate by one or two end sections, which is/are configured as contact pad(s).

8. The phosphor arrangement of claim 6 ,
wherein at least one end section of the line track extends along a circle arc at the transition region between the substrate and the phosphor.

9. The phosphor arrangement of claim 1 ,
wherein the line track is configured in a bifilar fashion and extends helically.

10. The phosphor arrangement of claim 1 ,
wherein a radially inner track section of the line track extends circumferentially around the irradiation region.

11. The phosphor arrangement of claim 10 ,
wherein a width of the inner track section is widened in comparison with the rest of the line track.

12. The phosphor arrangement of claim 1 ,
wherein at least one turning loop is provided at the line track.

13. The phosphor arrangement of claim 1 ,
wherein at least one of an enclosure element or the line track extend(s) around an edge wall of the phosphor.

14. A Laser Activated Remote Phosphor system, comprising:
a radiation source comprising a phosphor arrangement disposed downstream of said radiation source;
wherein the phosphor arrangement comprises:
a phosphor; and
a fracture detector used for monitoring the phosphor;
wherein the fracture detector comprises at least one line track which is operatively connected to the phosphor;
wherein the line track extends around the phosphor at least in sections with at least one loop.

15. A spotlight/headlight, comprising:
a phosphor arrangement, comprising:
a phosphor; and
a fracture detector used for monitoring the phosphor;
wherein the fracture detector comprises at least one line track which is operatively connected to the phosphor;
wherein the line track extends around the phosphor at least in sections with at least one loop.

Assignees

• Osram Gmbh

Inventors

• Vogt Peter
• Hammer Andreas
• Forster Georg

Classifications

• F21S41/176

  Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title

• F21Y2115/30

  Semiconductor lasers · CPC title

• G01N27/20

  Investigating the presence of flaws · CPC title

• F21V25/02

  coming into action when lighting device is disturbed, dismounted, or broken · CPC title

• F21V7/28

  characterised by coatings · CPC title