# US 2019/0317262 A1 · Fiber light module for vehicle signaling light

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- Number: US 2019/0317262 A1
- Document ID: US20190317262A1
- Status: Published application
- Kind: A1
- Application number: 16/385,754
- Filed: 2019-04-16
- Published: 2019-10-17
- Earliest claimed: 2018-04-17
- Assignees: Lumileds Holding B.V.
- Applicants: Lumileds Holding B.V.
- Inventors: Nils BENTER; Sergej KUNZ
- Web page: https://patentgrep.com/patent/US20190317262A1

## CPC

- G02B 6/001: {the light being emitted along at least a portion of the lateral surface of the fibre}
- F21S 43/14: Light emitting diodes [LED]
- F21S 43/235: Light guides
- F21S 43/237: rod-shaped
- F21S 43/245: emitting light from one or more of its major surfaces
- F21S 43/246: {having two or more output branches}
- F21S 43/26: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255}
- F21S 43/2651: {with several light entry surfaces for two or more light sources having distinct functions, at least one of them being signalling}
- F21S 43/27: Attachment thereof
- G02B 6/02052: {comprising optical elements other than gratings, e.g. filters (comprising gratings G02B6/02057)}
- G02B 6/4403: {with ribbon structure (G02B6/4429, G02B6/4439, G02B6/4479 take precedence)}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS

## Abstract

The invention describes a fiber light module comprising at least two light distribution fibers, wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube, wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure, wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface. The invention further describes a vehicle signaling light assembly comprising such a fiber light module and a vehicle signaling light which comprises such a vehicle signaling light assembly or fiber light module.

## Claims

### Claim 1

A fiber light module comprising:
at least two light distribution fibers,
wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube,
wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure,
wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, and
wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface.

### Claim 2 (depends on 1)

The fiber light module according to claim 1, wherein the stabilization structure is arranged to define a maximum distance between the light distribution fibers in a direction perpendicular to a longitudinal extension of the light distribution fibers.

### Claim 3 (depends on 1)

The fiber light module according to claim 1, wherein the stabilization structure comprises a bendable foil.

### Claim 4 (depends on 3)

The fiber light module according to claim 3, wherein the stabilization structure is arranged to provide a continuous mechanical coupling to the mechanical coupling interface of the guiding structure along a longitudinal extension of the guiding structure.

### Claim 5 (depends on 1)

The fiber light module according to any one of claims 1, wherein the stabilization structure is arranged to provide a discontinuous mechanical coupling to the mechanical coupling interface of the guiding structure along the longitudinal extension of the guiding structure.

### Claim 6 (depends on 5)

The fiber light module according to claim 5, wherein the stabilization structure comprises a multitude of coupling elements arranged at predefined distances along a longitudinal extension of the guiding structure.

### Claim 7 (depends on 1)

The fiber light module according to claim 1, wherein the stabilization structure comprises a stabilization material characterized by a Young's modulus of at least 0.3 GPa, preferably of at least 0.5 GPa and most preferably of at least 1 GPa, wherein the stabilization material rules the mechanical properties of the stabilization structure.

### Claim 8 (depends on 1)

The fiber light module according to claim 1, wherein the guiding structure comprises a guiding material characterized by a Young's modulus of at least 30 GPa, preferably at least 50 GPa, wherein the stabilization material rules the mechanical properties of the guiding structure.

### Claim 9 (depends on 8)

The fiber light module according to claim 8, wherein the guiding structure comprises a bendable metal wire.

### Claim 10 (depends on 8)

The fiber light module according to claim 8, wherein the guiding material is enclosed in a flexible cladding bonded to the stabilization structure.

### Claim 11 (depends on 1)

The fiber light module according to claim 1, wherein the fiber guiding tubes comprises a transparent plastic material bonded to the stabilization structure.

### Claim 12 (depends on 1)

The fiber light module according to claim 1, wherein at least one of the fiber guiding tubes comprises at least one light manipulation structure arranged to locally change light outcoupling of light guided by means of the enclosed light distribution fiber.

### Claim 13

A vehicle signaling light assembly comprising:
a fiber light module including at least two light distribution fibers;
wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube,
wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure,
wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, and
wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface; and
at least one light source, and
wherein the at least one light source is arranged to couple in light in a lateral end surface of the light distribution fiber.

### Claim 14

A vehicle signaling light comprising:
at least one fiber light module including at least two light distribution fibers;
wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube,
wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure,
wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, and
wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface,
at least one light source; and
an electrical interface, and
wherein the electrical interface is arranged to transfer electrical signals to the at least one light source.

### Claim 15 (depends on 14)

The vehicle signaling light according to claim 14 further comprising at least one fixture, wherein the at least one fixture is arranged to mechanically couple the fiber light module to the vehicle signaling light in accordance with a predefined shape.
