WO2019085252A1

WO2019085252A1 - Light source system, and automobile headlamp

Info

Publication number: WO2019085252A1
Application number: PCT/CN2018/071424
Authority: WO
Inventors: 张宝英; 郭祖强; 李屹
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2017-10-30
Filing date: 2018-01-04
Publication date: 2019-05-09
Also published as: CN109724048A; CN109724048B

Abstract

A light source system (1) and an automobile headlamp. The light source system comprises an excitation light source (11), a light-emitting device (12) and a control device (13). The excitation light source (11) emits excitation light. The light-emitting device (12) comprises multiple light-emitting units (121, 121a-121d), each of the light-emitting units (121, 121a-121d) switching between a first position and a second position according to the control of the control device (13), and receiving the excitation light and generating excited light at least when at the first position. The control device (13) is used for controlling, according to a pattern needing to be projected in front of the headlamp of the automobile, each of the light-emitting units (121, 121a-121d) so same is respectively located at the first position or the second position, so as to form a desired pattern in front of the headlamp of the automobile, wherein, when at the first position, the excited light generated by each of the light-emitting units (121, 121a-121d) enters a first path (L1) and emerges in front of the headlamp of the automobile; and when at the second position, the excited light generated by each of the light-emitting units (121, 121a-121d) enters a second path (L2) to avoid emerging in front of the headlamp of the automobile, or, each of the light-emitting units (121, 121a-121d) cannot receive the excitation light so as to generate excited light. The application field of a light source system is expanded, and the indication functions of an automobile headlamp are enriched.

Description

Light source system and car headlights

Technical field

The present invention relates to the field of automobiles, and in particular to a light source system and an automobile headlight using the same.

Background technique

The development of the modern automobile industry has put forward more and higher demand for automobile lamps. For example, traditional car lights are only used for lighting and simple indications for pedestrians or front and rear vehicles. However, with the development of the automobile industry, automotive lights are required. It is also possible to give instructions to the driver of the vehicle, such as indicating the driving route, etc., therefore, the car lights need to be able to change the displayed pattern as required.

technical problem

In Chinese Patent Application No. 201480060009.X, entitled "Wavelength Conversion Element, Manufacturing Method, and Light-Emitting Semiconductor Component Having Wavelength-Converting Element", it is disclosed that each grid of the ceramic grid array of the wavelength conversion element is filled. The conversion section, however, it is not disclosed that each grid can be individually controlled such that each grid produces or does not generate a laser according to the requirements of the pattern to be displayed, therefore, the wavelength conversion element and illumination disclosed in the above patent application When a semiconductor component is applied to an automobile lamp, the need to change the display pattern as needed cannot be satisfied.

Technical solution

In view of the above circumstances, the present invention provides a light source system and a car headlight that can enrich the vehicle indicating function to solve the above problems.

In one aspect, the present invention provides a light source system for use in a vehicle headlight of a vehicle, the light source system including an excitation light source, a light emitting device, and a control device.

The excitation light source is for emitting excitation light;

The light emitting device includes a plurality of light emitting units, each of the light emitting units for switching between a first position and a second position according to control of the control device, and each of the light emitting units is at least Receiving the excitation light and generating a laser light in a first position; and

The control device is configured to control each of the light-emitting units to be respectively located at a first position or a second position according to a pattern projected to a front of the headlight of the automobile, thereby forming a desired pattern in front of the headlight of the automobile, wherein In a position, the laser light generated by each of the light-emitting units enters a first path and exits to the front of the headlight of the automobile. In the second position, the laser light generated by each of the light-emitting units enters a second path. To avoid exiting to the front of the headlights of the car, or each of the lighting units is unable to receive the excitation light to generate a laser.

In another aspect, the present invention also provides an automotive headlight using the above light source system.

Beneficial effect

The light source system and the automobile headlight provided by the embodiments of the present invention have the advantages that: since the light emitting device of the light source system includes a plurality of light emitting units, each of the light emitting units can be independently controlled to switch between the first position and the second position. Therefore, by controlling the position of each light-emitting unit, a desired pattern can be formed in front of the headlight of the automobile, and changing the position of any of the light-emitting units can change the pattern formed in front of the headlight of the automobile, thereby expanding the application of the light source system. The field enriches the indication function of the car headlights.

DRAWINGS

1 is a schematic structural view of a light source system of a car headlight of the present invention.

2 is a schematic structural view of a light emitting unit of the light source system shown in FIG. 1.

3 is a schematic view showing another structure of a light emitting unit of the light source system shown in FIG. 1.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1. FIG. 1 is a schematic structural view of a light source system of an automobile headlight according to an embodiment of the present invention. The light source system 1 includes an excitation light source 11, a light-emitting device 12, and a control device 13. The excitation light source 11 emits excitation light, and the excitation light excites the illumination device 12 to generate a laser beam. The laser-receiving device 13 is controlled. Control exits along a particular route, creating a specific pattern that is projected into front of the headlights of the car. In the embodiment, the excitation light source 11 may be a laser light source or an LED light source. The illuminating device 12 is a fluorescent illuminating device, and includes a plurality of illuminating units 121 arranged in a certain order. Each of the illuminating units 121 generates laser light under the excitation of the excitation light, and each of the illuminating units 121 can be controlled by the control device. 13 controls switching between a first position and a second position. In the first position, the laser light generated by the light emitting unit 121 is emitted to the front of the headlight of the automobile, and in the second position, the laser light generated by the light emitting unit 121 cannot be emitted to the front of the headlight of the automobile. Therefore, the control unit 13 according to the The pattern needs to be projected to the front of the headlight of the car, and the control signal is sent to control each of the light-emitting units 121 to be in the first position or the second position, thereby transmitting the specific pattern to the front of the headlight of the automobile.

Please refer to FIG. 2 , which is a schematic diagram of the structure and operation of the light-emitting unit 121 . For convenience of description, four light-emitting units 121 a 121 d are arranged in FIG. 2 . Each of the light-emitting units 121a-121d includes a light-emitting panel 1211a-1211d and a driving device 1212a-1212d. Each of the illuminating plates 1211a-1211d generates a laser beam under the excitation of the excitation light, and each of the driving devices 1212a-1212d receives the control signal of the control device 13 and drives the corresponding illuminating plates 1211a-1211d at two positions according to the received control signal. When the corresponding illuminating plates 1211a-1211d are located at the first position, the generated laser light enters the first path and finally exits to the front of the headlights along the first path L1, and is located at the illuminating boards 1211a-1211d. In the second position, the generated laser light enters the second path L2, and after entering the second path L2, the laser light cannot be emitted to the front of the automobile headlight. In the present embodiment, each of the driving units 1212a-1212d is disposed in the corresponding light. The plates 1211a-1211d are away from the side of the excitation light source 11. Each of the driving units 1212a-1212d rotates the corresponding illuminating plates 1211a-1211d to switch the corresponding illuminating plates 1211a-1211d between the first position and the second position. As shown in FIG. 2, the illuminating plates 1211a, 1211d are in the first position, so that the laser light generated by the illuminating plates 1211a, 1211d enters the first path L1 and finally exits to the front of the car headlight, and the illuminating plates 1211b, 1211c are corresponding. The driving units 1212b and 1212d are driven to the second position, so that the laser light generated by the illuminating plates 1211b and 1211c enters the second path L2 and cannot be emitted to the front of the headlight of the automobile.

It can be understood that, in another embodiment, each of the illuminating panels 1211 can receive the excitation light emitted by the excitation light source 11 and generate a laser light in the first position, and the laser light is emitted to the front of the automobile headlight via the first path. In the second position, the excitation light emitted by the excitation light source 11 cannot be received, and therefore the laser light is not emitted to the front of the automobile headlight. For example, the light-emitting panel 1211 includes a fluorescent layer and a reflective layer, and the fluorescent layer is disposed on the light-emitting panel. a first surface of the 1211, and the reflective layer is disposed on the second surface of the light-emitting panel 1211 opposite to the first surface. In the first position, the first surface of the light-emitting panel 1211 faces the excitation light source 11, and the fluorescent layer can receive the excitation light. In the second position, the second surface of the illuminating panel 1211 faces the excitation light source 11, and the reflective layer separates the phosphor layer from the excitation light source 11 so that the phosphor layer cannot receive the excitation light emitted from the excitation light source 11.

It can be understood that the embodiment shown in FIG. 2 is that the illuminating panel 1211 of each illuminating unit 121 is independently controlled, but in other embodiments, the illuminating unit 121 can be controlled in units of groups, that is, two or more illuminating units. 121 is a group, each group drives its light-emitting unit 121 to be in the first position or the second position according to the received control signal by a corresponding driving device.

In one embodiment, the illuminating plate 1211 includes a fluorescent layer and a reflective layer, wherein the fluorescent layer is a fluorescent plate, and the reflective layer is a reflective film disposed on a side of the fluorescent plate facing away from the incident surface of the excitation light, and the fluorescent plate may be fluorescent The material and the glass powder are molded by mixing with glue, or may be formed by mixing a fluorescent substance or a resin by glue.

In another embodiment, the illuminating panel 1211 includes a fluorescent layer and a reflective layer, wherein the fluorescent layer is a fluorescent plate, and the reflective layer is a reflective substrate disposed on a side of the fluorescent plate facing away from the incident surface of the excitation light, and the surface of the reflective substrate The reflective surface, or the reflective substrate comprises a substrate and a reflective film disposed on the substrate.

In still another embodiment, the illuminating panel 1211 includes a fluorescent layer and a reflective layer, wherein the reflective layer is a reflective substrate, and the fluorescent layer is a fluorescent film disposed on the reflective substrate, and the fluorescent film is sprayed or coated. The fluorescent substance is placed on the reflective substrate.

In one embodiment, the reflective substrate is a flat plate, and the fluorescent layer is disposed on the flat plate.

In another embodiment, the reflective substrate includes a bottom wall and a peripheral wall, and the bottom wall and the peripheral wall together form an accommodating space, and the fluorescent layer is disposed in the accommodating space.

In one embodiment, the bottom wall of the reflective substrate has a function of reflecting light, and the peripheral wall is transparent.

In another embodiment, both the bottom wall and the peripheral wall of the reflective substrate have a function of reflecting light.

In one embodiment, the height of the peripheral wall of the reflective substrate is equal to the thickness of the fluorescent layer or the fluorescent plate.

In another embodiment, the height of the peripheral wall of the reflective substrate is greater than the thickness of the fluorescent layer. As shown in FIG. 3, in another embodiment, the light emitting unit 121 may further include a focusing lens 1213. The condensing lens 1213 is fixed on the fluorescent layer of the illuminating plate 1211 through the peripheral wall of the reflective substrate 1213 for concentrating the incident excitation light on the fluorescent layer of the illuminating plate 1211, and is used to generate the illuminating plate Collected and/or collimated by a laser.

It can be understood that the focusing lens 1213 can also be fixed on the fluorescent layer of the illuminating panel 1211 by other means.

In summary, the light source system and the automobile headlight of the present invention, since the light emitting device of the light source system includes a plurality of light emitting units, and each of the light emitting units can be independently controlled to switch between the first position and the second position, By controlling the position of each light-emitting unit, a desired pattern can be formed in front of the headlight of the automobile, and the position of any of the light-emitting units can be changed to change the pattern formed in front of the headlight of the automobile, thereby expanding the application field of the light source system. It enriches the indication function of the car headlights and has low cost and high brightness.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments of the present invention. Neither should the spirit and scope of the technical solutions of the present invention be deviated.

Claims

A light source system for use in a vehicle headlight of a vehicle, characterized in that the light source system comprises an excitation light source, a lighting device and a control device, wherein:

The excitation light source is for emitting excitation light;

The light emitting device includes a plurality of light emitting units, each of the light emitting units for switching between a first position and a second position according to control of the control device, and each of the light emitting units is at least Receiving the excitation light and generating a laser light in a first position; and

The control device is configured to control each of the light-emitting units to be respectively located at a first position or a second position according to a pattern projected to a front of the headlight of the automobile, thereby forming a desired pattern in front of the headlight of the automobile;

Wherein, in the first position, the laser light generated by each of the light-emitting units enters a first path and exits to the front of the headlight of the automobile;

In the second position, the laser light generated by each of the light-emitting units enters a second path to avoid exiting to the front of the automobile headlight, or each of the light-emitting units cannot receive the excitation light to generate a laser.
A light source system according to claim 1, wherein each of said light emitting units comprises a light emitting panel and a driving device, said light emitting panel receiving said excitation light and generating a laser beam, said driving device being said control device The illuminating panel is driven to switch between the first position and the second position.
The light source system according to claim 2, wherein said driving means is disposed on a side of said illuminating panel that faces away from excitation light.
The light source system according to claim 2, wherein said driving means drives said illuminating panel to rotate between said first position and said second position under control of said control means Switch.
A light source system according to claim 2, wherein said luminescent panel comprises a phosphor layer and a reflective layer disposed on a side of the phosphor layer facing away from the excitation light.
The light source system according to claim 5, wherein the reflective layer is a reflective substrate, the surface of the reflective substrate is a reflective surface, or the reflective substrate comprises a substrate and a reflective film disposed on the substrate.
A light source system according to claim 6, wherein said reflective substrate is a flat plate.
The light source system according to claim 6, wherein the reflective substrate comprises a bottom wall and a peripheral wall, the bottom wall and the peripheral wall together form an accommodating space, and the fluorescent film or the fluorescent plate is disposed in the accommodating In space.
The light source system according to claim 8, wherein the light emitting unit further comprises:

a collecting lens fixed in the accommodating space, the concentrating lens for concentrating incident excitation light to the illuminating panel, and for collecting laser light generated by the illuminating panel and/or Or collimate.
The light source system according to claim 9, wherein said converging lens is fixed in said accommodating space by said peripheral wall.
An automotive headlight comprising the light source system of any of claims 1-10.