# US 10,502,378 B2 · Hybrid headlamp systems and methods

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- Number: US 10,502,378 B2
- Document ID: US10502378B2
- Status: Granted
- Kind: B2
- Application number: 15/608,357
- Filed: 2017-05-30
- Published: 2018-12-06
- Granted: 2019-12-10
- Earliest claimed: 2017-05-30
- Assignees: Valeo North America, Inc.
- Applicants: Valeo North America, Inc.
- Inventors: Brant Potter; John Orisich
- Web page: https://patentgrep.com/patent/US10502378B2

## CPC

- F21S 41/14: characterised by the type of light source
- F21S 41/26: Elongated lenses
- B60Q 1/1407: {General lighting circuits comprising dimming circuits}
- F21S 41/141: Light emitting diodes [LED]
- F21S 41/147: the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S 41/16: Laser light sources
- F21S 41/18: {Combination of light sources of different types or shapes}
- F21S 41/255: Lenses with a front view of circular or truncated circular outline
- F21S 41/285: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805}
- F21S 41/32: Optical layout thereof
- F21S 41/321: {the reflector being a surface of revolution or a planar surface, e.g. truncated}
- F21S 41/40: characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S 41/663: by switching light sources (by switching incandescent light sources F21S41/162)
- F21S 41/675: by moving reflectors
- B60Q 2300/41: preceding vehicle
- B60Q 2300/42: oncoming vehicle
- F21Y 2115/10: Light-emitting diodes [LED]
- F21Y 2115/30: Semiconductor lasers
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- 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 headlamp assembly includes a low beam assembly configured to generate a low beam distribution. The low beam assembly includes a first low beam solid state light source module having a first laser solid state light source optically configured to emit a first luminous intensity distribution and a second laser solid state light source optically configured to emit a second luminous intensity distribution, and a second low beam solid state light source module having a solid state light source optically configured to emit a third luminous intensity distribution which at least partially overlaps at least one of the first and second luminous intensity distributions. The headlamp assembly also has a high beam assembly configured to generate a high beam distribution.

## Claims

### Claim 1

A headlamp assembly, comprising:
a low beam assembly that generates a low beam distribution including
a first low beam solid state light source module having a first laser solid state light source that emits a first luminous intensity distribution and a second laser solid state light source that emits a second luminous intensity distribution, and
a second low beam solid state light source module haying a solid state light source that emits a third luminous intensity distribution which at least partially overlaps at least one of the first and second luminous intensity distributions; and
a high beam assembly that generates a high beam distribution,
wherein the first, second, and third luminous intensity distributions are each measured at a plane spaced from and parallel to a front emitting face of the headlamp assembly,
wherein each luminous intensity distribution defines an intensity of light, in candelas, across various points of a beam pattern of each light source,
wherein the first luminous intensity distribution differs from the second luminous intensity distribution,
wherein the first luminous intensity distribution includes a maximum intensity hot spot region, and
wherein the second luminous intensity distribution includes a concentrated intensity hot spot region that is smaller in area than the maximum intensity hot spot region of the first luminous intensity distribution and a larger spread distribution compared to the first luminous intensity distribution.

### Claim 2 (depends on 1)

The headlamp assembly of claim 1, wherein the second low beam solid state light source module includes a plurality of light-emitting diode (LED) components.

### Claim 3 (depends on 1)

The headlamp assembly of claim 1, wherein the second low beam solid state light source module includes a plurality of solid state light source modules.

### Claim 4 (depends on 1)

The headlamp assembly of claim 1, wherein each of the first low beam solid state light source module and the second low beam solid state light source module includes at least one of a semiconductor light-emitting diode (LED), an organic light-emitting diode (OLED), a polymer light-emitting diode (PLED), and a monolithic light-emitting diode (MLED).

### Claim 5 (depends on 1)

The headlamp assembly of claim 1, wherein the first, second, and third luminous intensity distributions are patterns that each include:
at least one first area having a high luminous intensity;
a least one second area having a low luminous intensity; and
at least one transition area between the first area and second area such that the transition area has a luminous intensity that is between the high luminous intensity of the first area and the low luminous intensity of the second area.

### Claim 6

The headlamp assembly of claim wherein the first laser solid light source, the second laser solid light source, and the solid state light source each emit white light.

### Claim 7 (depends on 1)

The headlamp assembly of claim 1, wherein a distribution pattern of luminous intensity of the first luminous intensity distribution differs from a distribution pattern of luminous intensity of the second luminous intensity distribution.

### Claim 8 (depends on 1)

The headlamp assembly of claim 1, wherein the maximum intensity hot spot region of the first luminous intensity distribution includes a maximum intensity of the first luminous intensity distribution, and
the maximum intensity hot spot region is located adjacent to an intersection of horizontal and vertical axes of the plane, where the intersection is aligned with a center of the headlamp assembly.
