IP Library Granted Patent US 10,451,259
Granted Patent B2
US 10,451,259 · App. 15/761,993 · Granted Oct 22, 2019

Headlight, vehicle with headlight and method for monitoring a headlight

Inventors: Bernd Fischer (Salzkotten, DE); Susanne Köhler (Lippstadt, DE); Philip Stroop (Schloβ Holte-Stukenbrock, DE); Benjamin Willeke (Lippstadt, DE)
Assignee: Hella GmbH & Co. KGaA
F21V23/0457F21S41/14F21S41/16F21S41/176F21S41/28F21S41/285F21S41/30F21S41/32F21S45/70
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Quick Facts
Patent No.
US 10,451,259
App. No.
15/761,993
Granted
Oct 22, 2019
Kind
B2
Abstract

A headlight featuring a laser light source and a converter for converting a short-wave laser beam generated by the laser light source into white light. The headlight also includes a light-forming element for creating a beam path using the white light of the laser light source, as well as an IR sensor for measuring the IR radiation generated by the converter.

Claims (36)

1. A headlight comprising:

a laser light source;

a converter for converting a short-wave laser beam generated by the laser light source into white light;

a light-forming element for creating a beam path using the white light of the laser light source

an IR sensor for measuring the IR radiation generated by the converter; and

a lens is positioned in the beam path generated by the light-forming element, where the lens has a material or a coating that is configured to reflect the IR radiation to the IR sensor.

2. The headlight in accordance with claim 1 , wherein the light-forming element is a reflector.

3. The headlight in accordance with claim 1 , wherein the IR sensor is positioned outside of the beam path generated by the light-forming element.

4. The headlight in accordance with claim 1 , wherein the light-forming element features a refractive element, whereby the refractive element features a material or a coating that is configured to reflect and/or refract the IR radiation to the IR sensor.

5. The headlight in accordance with claim 4 , wherein the refractive element is configured for light-guiding and/or light-forming.

6. The headlight in accordance with claim 1 , wherein a deflector is provided that is configured to reflect the IR radiation to the IR sensor.

7. The headlight in accordance with claim 1 , wherein the IR sensor is set up to switch off the laser light source as soon as an IR radiation measurement decreases below a certain IR emission limit value.

8. A headlight comprising:

a laser light source;

a converter for converting a short-wave laser beam generated by the laser light source into white light;

a light-forming element for creating a beam path using the white light of the laser light source, wherein the light-forming element features a refractive element,

an IR sensor for measuring the IR radiation generated by the converter; and

the refractive element features a material or a coating that is configured to reflect and/or refract the IR radiation to the IR sensor.

9. The headlight in accordance with claim 8 , wherein the light-forming element is a reflector.

10. The headlight in accordance with claim 8 , wherein the IR sensor is positioned outside of the beam path generated by the light-forming element.

11. The headlight in accordance with claim 8 , wherein a lens is positioned in the beam path generated by the light-forming element, where the lens has a material or a coating that is configured to reflect the IR radiation to the IR sensor.

12. The headlight in accordance with claim 8 , wherein the refractive element is configured for light-guiding and/or light-forming.

13. The headlight in accordance with claim 8 , wherein a deflector is provided that is configured to reflect the IR radiation to the IR sensor.

14. The headlight in accordance with claim 8 , wherein the IR sensor is set up to switch off the laser light source as soon as an IR radiation measurement decreases below a certain IR emission limit value.

15. A headlight comprising:

a laser light source;

a converter for converting a short-wave laser beam generated by the laser light source into white light;

a light-forming element for creating a beam path using the white light of the laser light source; and

an IR sensor for measuring the IR radiation generated by the converter; and

a deflector is provided that is configured to reflect the IR radiation to the IR sensor.

16. The headlight in accordance with claim 15 , wherein the light-forming element is a reflector.

17. The headlight in accordance with claim 15 , wherein the IR sensor is positioned outside of the beam path generated by the light-forming element.

18. The headlight in accordance with claim 15 , wherein a lens is positioned in the beam path generated by the light-forming element, where the lens has a material or a coating that is configured to reflect the IR radiation to the IR sensor.

19. The headlight in accordance with claim 15 , wherein the light-forming element features a refractive element, whereby the refractive element features a material or a coating that is configured to reflect and/or refract the IR radiation to the IR sensor.

20. The headlight in accordance with claim 19 , wherein the refractive element is configured for light-guiding and/or light-forming.

21. The headlight in accordance with claim 15 , wherein the IR sensor is set up to switch off the laser light source as soon as an IR radiation measurement decreases below a certain IR emission limit value.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2018
From: FISCHER, BERND; KÖHLER, SUSANNE; STROOP, PHILIP; WILLEKE, BENJAMIN
To: HELLA KGAA HUECK & CO.
Reel/Frame 046885/0844 →
CHANGE OF NAME Recorded Sep 17, 2018
From: HELLA KGAA HUECK & CO.
To: HELLA GMBH & CO. KGAA
Reel/Frame 047577/0337 →
Priority Claims (1)
DE 10 2015 116 211 · Sep 25, 2015 · national
Continuity (1)
Related Publication 20180274770A1 · Sep 27, 2018