# US 2015/0176809 A1 · Lighting device with phosphor surface

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- Number: US 2015/0176809 A1
- Document ID: US20150176809A1
- Status: Published application
- Kind: A1
- Application number: 14/554,071
- Filed: 2014-11-26
- Published: 2015-06-25
- Earliest claimed: 2013-12-19
- Assignees: OSRAM GmbH
- Applicants: OSRAM GmbH
- Inventors: Stephan Schwaiger; Oliver Hering; Juergen Hager
- Web page: https://patentgrep.com/patent/US20150176809A1

## CPC

- F21V 13/08: the elements being filters or photoluminescent elements and reflectors
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21S 41/16: Laser light sources
- F21S 41/176: Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
- F21S 41/663: by switching light sources (by switching incandescent light sources F21S41/162)
- F21S 41/675: by moving reflectors
- G02B 26/105: {with one or more pivoting mirrors or galvano-mirrors (G02B26/101 takes precedence)}
- F21V 14/04: by movement of reflectors {(in vehicle head lamps F21S41/675)}
- F21Y 2113/13: comprising an assembly of point-like light sources
- F21Y 2115/10: Light-emitting diodes [LED]
- F21Y 2115/30: Semiconductor lasers
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A lighting device may include a light generating unit configured to generate at least two light beams; at least one phosphor surface which is illuminatable by the light beams; and at least one movable deflection mirror for the scanning deflection of the light beams onto the phosphor surface, such that the light beams impinge on the at least one phosphor surface in a spaced-apart fashion, and such that at least one region of the phosphor surface is illuminatable by at least two light beams in a manner spaced apart temporally.

## Claims

### Claim 1

A lighting device, comprising:
a light generating unit configured to generate at least two light beams;
at least one phosphor surface which is illuminatable by the light beams; and
at least one movable deflection mirror for the scanning deflection of the light beams onto the phosphor surface,
such that the light beams impinge on the at least one phosphor surface in a spaced-apart fashion, and
such that at least one region of the phosphor surface is illuminatable by at least two light beams in a manner spaced apart temporally.

### Claim 2 (depends on 1)

The lighting device of claim 1,
wherein at least two light beams are configured to generate focal spots with a predetermined distance on the phosphor surface.

### Claim 3 (depends on 2)

The lighting device of claim 2,
wherein the lighting device is designed to vary a distance between the focal spots on the phosphor surface.

### Claim 4 (depends on 3)

The lighting device of claim 3,
wherein the lighting device is designed to vary a setting angle of at least one of the light beams relative to an associated deflection mirror.

### Claim 5 (depends on 3)

The lighting device of claim 3,
wherein the lighting device is designed to direct at least two light beams onto respective movable deflection mirrors and is designed to vary an alignment of said deflection mirrors with respect to one another.

### Claim 6 (depends on 1)

The lighting device of claim 1,
wherein the light beams are angled with respect to one another.

### Claim 7 (depends on 1)

The lighting device of claim 1,
wherein at least one movable deflection mirror is embodied as a pivotable deflection mirror.

### Claim 8 (depends on 1)

The lighting device of claim 1,
wherein the light beams can be switched on and off individually.

### Claim 9 (depends on 1)

The lighting device of claim 1, further comprising:
a plurality of light sources configured to generate respective light beams.

### Claim 10 (depends on 9)

The lighting device of claim 9,
a plurality of laser configured to generate respective light beams.

### Claim 11

A method for generating a light emission pattern, the method comprising:
illuminating at least one phosphor surface by at least two light beams such that at least one region of the phosphor surface is illuminated by at least two light beams in a manner spaced apart temporally.