CN106895271B - Lighting device and vehicle headlamp device - Google Patents
Lighting device and vehicle headlamp device Download PDFInfo
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- CN106895271B CN106895271B CN201510963632.2A CN201510963632A CN106895271B CN 106895271 B CN106895271 B CN 106895271B CN 201510963632 A CN201510963632 A CN 201510963632A CN 106895271 B CN106895271 B CN 106895271B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/17—Discharge light sources
- F21S41/173—Fluorescent light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a lighting device and a vehicle headlamp device, comprising: a laser light source for emitting laser light; the reflecting cover is arranged on the first substrate, a light outlet is formed between the reflecting cover and the first substrate, and one surface of the reflecting cover facing the first substrate is a reflecting surface; the wavelength conversion device is arranged on the first substrate and positioned between the first substrate and the reflecting cover, the wavelength conversion device comprises a plurality of wavelength conversion areas, the wavelength conversion areas are used for receiving laser and converting the laser into received laser to be emitted to the reflecting surface, and the reflecting surface reflects the received laser out of the light outlet in a set direction; and the control device is connected with the wavelength conversion device and is used for driving the wavelength conversion device to switch the corresponding wavelength conversion region to receive the laser. The lighting device provided by the invention not only has high light-emitting brightness, but also has a simple structure and a small volume.
Description
Technical Field
The present invention relates to the field of lighting technologies, and more particularly, to a lighting device and a vehicle headlamp device.
Background
A vehicle headlamp apparatus is one of important components of a vehicle, and the light emission luminance of the vehicle headlamp apparatus is closely related to safe driving of a driver at night. With the development of the lighting technology field, in order to improve the brightness of the vehicle headlamp apparatus, a conventional vehicle headlamp apparatus generally employs a Light Emitting Diode (LED) as a Light emitting source. However, the conventional vehicle headlamp apparatus using the light emitting diodes as the light emitting source has reached a limit in the emission luminance, and if the vehicle headlamp apparatus is to be improved again, it is necessary to increase the number of the light emitting diodes.
Disclosure of Invention
In view of this, the present invention provides an illumination device with high brightness, simple structure and small volume.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
an illumination device, comprising:
a laser light source for emitting laser light;
the reflecting cover is arranged on the first substrate, a light outlet is formed between the reflecting cover and the first substrate, and one surface of the reflecting cover facing the first substrate is a reflecting surface;
the wavelength conversion device is arranged on the first substrate and positioned between the first substrate and the reflecting cover, the wavelength conversion device comprises a plurality of wavelength conversion areas, the wavelength conversion areas are used for receiving the laser and converting the laser into a received laser and then emitting the received laser to the reflecting surface, and the reflecting surface reflects the received laser out of the light outlet in a given direction;
and the control device is connected with the wavelength conversion device and is used for driving the wavelength conversion device to switch the corresponding wavelength conversion region to receive the laser.
Preferably, the wavelength conversion device includes:
a second substrate;
the plurality of fluorescent powder layers are arranged on one side, facing the reflecting surface, of the second substrate in a circular ring manner, and each fluorescent powder layer corresponds to one wavelength conversion area;
the control device is used for driving the second substrate to switch the corresponding fluorescent powder layer to receive the laser.
Preferably, in the wavelength conversion device, at least one of the phosphor layers has a surface facing the reflection surface that receives the laser light with a different spot from a surface facing the reflection surface of the other phosphor layer that receives the laser light.
Preferably, in the wavelength conversion device, a surface of the at least one phosphor layer facing the reflection surface is higher than surfaces of the remaining phosphor layers facing the reflection surface.
Preferably, in the wavelength conversion device, a spot conversion device is fixed to the side of the at least one phosphor layer facing the reflection surface.
Preferably, the spot conversion device is a light scattering device or a first light condensing device.
Preferably, the colors of all the phosphor layers are the same;
alternatively, at least one phosphor layer has a color different from the colors of the remaining phosphor layers.
Preferably, the concentration of the phosphor layers is different for all colors that are the same.
Preferably, the second substrate is a ceramic substrate, a metal substrate, an aluminum nitride ceramic substrate, an aluminum oxide ceramic substrate, a single crystal silicon substrate, or a silicon carbide substrate.
Preferably, the material of the fluorescent powder layer is YAG luminescent ceramic.
Preferably, the laser light source is located outside the reflector, and the reflector has a light-transmitting opening, wherein the laser light is incident to the wavelength conversion region through the light-transmitting opening.
Preferably, the method further comprises the following steps: and the second light condensation device is arranged on the light emitting path of the laser light source and is positioned between the laser light source and the wavelength conversion device.
Preferably, the reflecting surface is a cambered surface reflecting surface.
The invention also provides a vehicle headlamp device comprising the lighting device.
Compared with the prior art, the technical scheme provided by the invention at least has the following advantages:
the present invention provides a lighting device comprising: a laser light source for emitting laser light; the reflecting cover is arranged on the first substrate, a light outlet is formed between the reflecting cover and the first substrate, and one surface of the reflecting cover facing the first substrate is a reflecting surface; the wavelength conversion device is arranged on the first substrate and positioned between the first substrate and the reflecting cover, the wavelength conversion device comprises a plurality of wavelength conversion areas, the wavelength conversion areas are used for receiving the laser and converting the laser into a received laser and then emitting the received laser to the reflecting surface, and the reflecting surface reflects the received laser out of the light outlet in a given direction; and the control device is connected with the wavelength conversion device and is used for driving the wavelength conversion device to switch the corresponding wavelength conversion region to receive the laser.
According to the technical scheme provided by the invention, after the illuminating device irradiates the wavelength conversion region with the laser, the obtained received laser emits light in a given direction, and the high brightness of the emitted light of the illuminating device is ensured due to the high brightness of the laser light source; the lighting device has a simple structure, and the volume of each component formed by the lighting device is limited, so that the lighting device is ensured to be small; the semi-closed fixing mode of the reflecting cover and the first substrate ensures that the laser light is totally emitted, so that the waste of light is avoided; in addition, the control device controls the wavelength conversion device to switch different wavelength conversion areas to receive the laser, so that different light emitting effects of the lighting device are achieved, and the applicability and flexibility of the lighting device are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an illumination device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a wavelength conversion device according to an embodiment of the present disclosure;
fig. 3a is a schematic structural diagram of another illumination device provided in the embodiment of the present application;
fig. 3b is a schematic structural diagram of another lighting device provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of another lighting device provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background art, the conventional vehicle headlamp apparatus using the light emitting diodes as the light emitting source has reached the limit of the emission luminance, and if the vehicle headlamp apparatus is to be improved again, it is necessary to increase the number of the light emitting diodes.
Based on this, this application embodiment provides a lighting device, and lighting device not only goes out luminance height, and simple structure is small moreover. In order to achieve the above object, the technical solutions provided by the embodiments of the present application are described in detail below, specifically with reference to fig. 1 to 4.
Referring to fig. 1, a schematic structural diagram of an illumination device provided in an embodiment of the present application is shown, where the illumination device includes:
a laser light source 10 for emitting laser light;
the light source comprises a first substrate 20 and a reflector 30 arranged on the first substrate 20, wherein a light outlet 21 is formed between the reflector 30 and the first substrate 20, and one surface of the reflector 30 facing the first substrate 20 is a reflecting surface 31;
a wavelength conversion device 40 disposed on the first substrate 20 and located between the first substrate 20 and the reflective cover 30, wherein the wavelength conversion device 40 includes a plurality of wavelength conversion regions 41, the wavelength conversion regions 41 are configured to receive the laser light, convert the laser light into a received laser light, and emit the received laser light to the reflective surface 31, and the reflective surface 31 reflects the received laser light out of the light outlet 21 in a predetermined direction;
and a control device 50 connected to the wavelength conversion device 40 for driving the wavelength conversion device 40 to switch the respective wavelength conversion regions 41 to receive the laser light.
As can be seen from the above, in the technical scheme provided in the embodiment of the present application, after the illumination device irradiates the wavelength conversion region with the laser, the obtained received laser emits light in a predetermined direction, and because the brightness of the laser light source is high, the high brightness of the emitted light of the illumination device is ensured; in addition, the lighting device has a simple structure, and the volume of each component formed by the lighting device is limited, so that the lighting device is ensured to be small; in addition, by the semi-closed fixing mode of the reflecting cover and the first substrate, the laser can be completely emitted, and the waste of light is avoided; and the control device controls the wavelength conversion device to switch different wavelength conversion areas to receive the laser, so as to realize different light emitting effects of the lighting device, and improve the applicability and flexibility of the lighting device
The wavelength conversion region provided by the embodiment of the application can be composed of fluorescent powder, and the fluorescent powder is irradiated by laser to generate laser serving as a light-emitting light source of the lighting device. Specifically, referring to fig. 2, a schematic structural diagram of a wavelength conversion device provided in an embodiment of the present application is shown, where the wavelength conversion device includes:
a second substrate 42;
a plurality of phosphor layers 41 disposed on one side of the second substrate 42 facing the reflective surface and arranged in a circular ring shape, wherein each phosphor layer 41 corresponds to one of the wavelength conversion regions;
the control device is configured to drive the second substrate 42 to switch the corresponding phosphor layer 41 to receive the laser light, that is, the laser light emitted by the laser light source 10.
Specifically, the wavelength conversion device is a reflection type wavelength conversion device in which the optical path of the laser light emitted from the laser light source is fixed, and thus the direction of irradiation to the wavelength conversion device is fixed, and the wavelength conversion device is driven by the control device so that each wavelength conversion region thereof can receive the laser light emitted from the laser light source. The control device provided by the embodiment of the application can drive the second substrate to rotate so as to switch the corresponding fluorescent powder layer to receive laser; because the plurality of fluorescent powder layers are arranged in a circular ring shape, the laser can be irradiated to a certain position on the circular ring by arranging the light path of the laser emitted by the laser light source, and then the second substrate is driven to rotate by the control device so as to achieve the purpose of switching different fluorescent powder layers to receive the laser; the control device drives the second substrate to rotate by taking the direction which passes through the center of the circular ring and is vertical to the circular ring as an axis, so that different fluorescent powder layers are switched to receive laser.
The control device can comprise a rotating shaft, a motor, a controller and the like, the rotating shaft and the center of the ring of the second substrate are fixed, the controller controls the motor to rotate so as to drive the second substrate to rotate, and then control signals can be sent to the controller so as to control the motor to drive the second substrate to rotate, so that different fluorescent powder layers can be switched to receive laser.
In addition, according to the lighting device provided by the embodiment of the application, the positions of the laser light source, the wavelength conversion device and the reflector, and the parameters of the reflecting surface of the reflector and the like can be optimized, so that when the laser light source irradiates the preset wavelength conversion region, the obtained received laser light can be emitted in a high beam mode or a low beam mode of the vehicle headlamp device through the reflection of the reflector. Because the direction of the laser irradiation to the wavelength conversion device is fixed, the lighting device provided by the embodiment of the application can change the light emitting direction of the lighting device by changing the difference of parameters such as the position, the size and the like of light spots irradiated to different wavelength conversion areas by the laser; that is, in the wavelength conversion device, the spot at which the surface of at least one phosphor layer facing the reflection surface receives the laser light is different from the spot at which the surface of the other phosphor layer facing the reflection surface receives the laser light.
Specifically, referring to fig. 3a and fig. 3b, which are schematic structural diagrams of two illumination devices according to embodiments of the present disclosure, respectively, in the wavelength conversion device 40, a surface of the at least one phosphor layer 41' facing the reflection surface side is higher than a surface of the remaining phosphor layers 41 facing the reflection surface side.
By optimizing the positions of the laser light source, the wavelength conversion device, and the reflector, and the parameters of the reflector, referring to fig. 3a, when the laser light from the laser light source 10 is irradiated to the phosphor layer 41 with a lower height, the received laser light emitted from the phosphor layer 41 is reflected by the reflector 31 of the reflector 30 and then emitted as high beam; in addition, referring to fig. 3b, when the phosphor layer 41 'with a high height is rotated to the laser irradiation region, the direction of the laser beam emitted from the phosphor layer 41' is changed due to the change of parameters such as the size and position of the light spot, and the laser beam is reflected by the reflection surface 31 of the reflection cover 30 and emitted as a low beam.
It should be noted that fig. 3a and 3b are only examples for illustrating the high beam type and the low beam type, and parameters such as the thickness of the phosphor layer in the high beam type and the low beam type and the laser path of the laser light source provided in the embodiments of the present application need to be specifically designed according to the actual application, and the present application is not particularly limited.
In addition, in the embodiment of the application, besides that the surface heights of the phosphor layers can be made to be different, parameters such as the position and the size of the light spot irradiated to the phosphor layers by the laser can be changed through the light spot conversion device, that is, in the wavelength conversion device, a light spot conversion device is fixed on one side of the at least one phosphor layer facing the reflection surface. After the light spot conversion device receives the laser, the laser is processed, so that the light spots irradiated to the fluorescent powder layer corresponding to the light spot conversion device by the laser are different from the light spots irradiated to the rest of the fluorescent powder layers. The light spot conversion device provided by the embodiment of the application is fixed on one side of the fluorescent powder layer facing the reflecting surface, so that the light spot conversion device can move along with the fluorescent powder layer when the control device switches the fluorescent powder layer, and the position relation between the light spot conversion device and the fluorescent powder layer is kept. It should be noted that, in the embodiment of the present application, the distance between the light spot conversion device and the phosphor layer is not particularly limited, and needs to be specifically designed according to practical applications. The light spot conversion device provided by the embodiment of the application is a light scattering device or a first light condensing device. The light scattering device can be a light scattering lens, a light scattering sheet and the like, and the first light gathering device can be a light gathering lens, in particular a plano-concave cylindrical mirror, a biconcave cylindrical mirror and the like. The light scattering device enables the light spot to be enlarged before the light spot irradiates the fluorescent powder layer, the light spot size directly causes different laser beam divergences when the laser beam irradiates different wavelength conversion areas, and the light spot size also causes different laser densities on the surface of the wavelength conversion areas when the laser beam irradiates different wavelength conversion areas, so that the laser beam brightness and the light density are different. The arrangement of the plano-concave cylindrical mirror and the biconcave cylindrical mirror enables light spots to be diffused in the direction perpendicular to the light emergent direction, and the light beam is further expanded laterally while the emergent light density is reduced, so that the lighting requirements of the light beam on two sides of the light advancing direction are met.
In addition, in order to enrich the light emitting color and effect of the lighting device, the colors of all the phosphor layers provided by the embodiment of the application are the same;
alternatively, at least one phosphor layer has a color different from the colors of the remaining phosphor layers.
When the colors of the multiple phosphor layers are the same, the concentrations of the multiple phosphor layers can be changed, that is, the concentrations of the phosphor layers with the same color are different, so as to change the brightness of the laser light received by the phosphor layers after receiving the laser light.
Further, in order to improve the effect of the laser emitted from the laser light source, referring to fig. 4, a schematic structural diagram of another lighting device provided in the embodiment of the present application is shown, where the lighting device further includes: and the second light condensation device 60 is arranged on the light outgoing path of the laser light source 10 and is positioned between the laser light source 10 and the wavelength conversion device 40.
Specifically, the laser light source may include one laser, or the laser light source includes a plurality of lasers; the second condensing device may include a plurality of condensing lenses, each condensing lens corresponds to a light path of one laser, and the lasers emitted from all the lasers are all converged to the same position of the wavelength conversion device, or the second condensing device includes one condensing lens, and the lasers emitted from all the lasers are converged to the same position of the wavelength conversion device, which is not specifically limited in this application and needs to be specifically designed according to practical application.
In any of the above embodiments, the laser of the laser light source provided by the present application may be a high power threshold laser, which may be a semiconductor laser. When the lighting device is used as part of a vehicle headlamp device, a blue laser can be adopted, the fluorescent powder layer can be yellow fluorescent powder, and parameters such as the concentration of the fluorescent powder layer and the position and the size of a light spot irradiated to the fluorescent powder layer by laser are optimized to realize a high beam form and a low beam form and realize different brightness. In addition, as for the position of the laser light source, it may be located inside the reflection housing, and may also be located outside the reflection housing, and the application is not particularly limited; the laser source is located outside the reflector, and the reflector has a light-transmitting opening, wherein the laser penetrates through the light-transmitting opening and enters the wavelength conversion region.
In the process of irradiating the phosphor layer with laser, the phosphor layer generates a large amount of heat, and therefore, the second substrate provided by the present application needs to be designed as a high thermal conductivity substrate, which can withstand high temperature without deformation, and has a thermal conductivity greater than 140W/(m × k), wherein the second substrate may be a ceramic substrate, a metal substrate, an aluminum nitride ceramic substrate, an aluminum oxide ceramic substrate, a single crystal silicon substrate, or a silicon carbide substrate, or may be a substrate made of other materials, and the present application is not particularly limited thereto. In this application, first base plate is the barn door, and first base plate leads the emergent light direction with the structure that the bowl formed partly closed, in addition, because first base plate and second base plate contact, this application can set up first base plate into high heat conduction base plate equally, improves lighting device's radiating effect. The phosphor layer provided in the embodiment of the present application may be made of YAG (yttrium aluminum garnet) luminescent ceramic.
In order to optimize the reflecting surface of the reflecting cover, the reflecting surface provided by the embodiment of the application can be an arc surface reflecting surface, a parabolic curved surface design is adopted, the light loss can be effectively reduced, and the angle of the reflecting surface reflecting the received laser and the spatial structure of the reflecting surface can be simulated through computer modeling to determine the design parameters of the reflecting surface; the reflection cover provided by the present application may be made of a material such as resin, glass, metal, or alloy, and the reflection surface may be formed by depositing a highly reflective aluminum film or silver film on the surface thereof.
Optionally, the lighting device provided by the embodiment of the application is a vehicle headlamp device. Alternatively, the illumination device may also be applied to an illumination system of a projector.
The embodiment of the application provides a lighting device, includes: a laser light source for emitting laser light; the reflecting cover is arranged on the first substrate, a light outlet is formed between the reflecting cover and the first substrate, and one surface of the reflecting cover facing the first substrate is a reflecting surface; the wavelength conversion device is arranged on the first substrate and positioned between the first substrate and the reflecting cover, the wavelength conversion device comprises a plurality of wavelength conversion areas, the wavelength conversion areas are used for receiving the laser and converting the laser into a received laser and then emitting the received laser to the reflecting surface, and the reflecting surface reflects the received laser out of the light outlet in a given direction; and the control device is connected with the wavelength conversion device and is used for driving the wavelength conversion device to switch the corresponding wavelength conversion region to receive the laser.
As can be seen from the above, in the technical scheme provided in the embodiment of the present application, after the illumination device irradiates the wavelength conversion region with the laser, the obtained received laser emits light in a predetermined direction, and because the brightness of the laser light source is high, the high brightness of the emitted light of the illumination device is ensured; in addition, the lighting device has a simple structure, and the volume of each component formed by the lighting device is limited, so that the lighting device is ensured to be small; in addition, by the semi-closed fixing mode of the reflecting cover and the first substrate, the laser can be completely emitted, and the waste of light is avoided; and the control device controls the wavelength conversion device to switch different wavelength conversion areas to receive the laser, so that different light emitting effects of the lighting device are realized, and the applicability and flexibility of the lighting device are improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. An illumination device, comprising:
a laser light source for emitting laser light;
the reflecting cover is arranged on the first substrate, a light outlet is formed between the reflecting cover and the first substrate, and one surface of the reflecting cover facing the first substrate is a reflecting surface;
a wavelength conversion device disposed on the first substrate and located between the first substrate and the reflective cover, the wavelength conversion device being a reflective wavelength conversion device, the wavelength conversion device including a plurality of wavelength conversion regions, the wavelength conversion regions being configured to receive the laser light, convert the laser light into a received laser light, and emit the received laser light to the reflective surface, the reflective surface reflecting the received laser light out of the light exit port in a predetermined direction; wherein the light spot of the laser received by at least one wavelength conversion region is different from the light spots of the laser received by other wavelength conversion regions;
and the control device is connected with the wavelength conversion device and is used for driving the wavelength conversion device to switch the corresponding wavelength conversion region to receive the laser.
2. A lighting device as recited in claim 1, wherein said wavelength conversion device comprises:
a second substrate;
the plurality of fluorescent powder layers are arranged on one side, facing the reflecting surface, of the second substrate in a circular ring manner, and each fluorescent powder layer corresponds to one wavelength conversion area;
the control device is used for driving the second substrate to switch the corresponding fluorescent powder layer to receive the laser.
3. A lighting device as recited in claim 2, wherein in said wavelength conversion device, a surface of at least one of said phosphor layers facing said reflective surface receives said laser light at a different spot than a surface of the other phosphor layers facing said reflective surface.
4. A lighting device as recited in claim 3, wherein in said wavelength conversion device, a surface of said at least one phosphor layer facing said reflective surface is higher than a surface of remaining phosphor layers facing said reflective surface.
5. A lighting device as recited in claim 3, wherein a spot conversion device is secured to said at least one phosphor layer on a side facing said reflective surface in said wavelength conversion device.
6. A lighting device as recited in claim 5, wherein said spot conversion device is a light dispersing device or a first light concentrating device.
7. A lighting device as recited in claim 2, wherein all of said phosphor layers are the same color;
alternatively, at least one phosphor layer has a color different from the colors of the remaining phosphor layers.
8. A lighting device as recited in claim 7, wherein the concentration of said phosphor layers of all colors being the same is different.
9. The lighting device according to claim 2, wherein the second substrate is a ceramic substrate, a metal substrate, an aluminum nitride ceramic substrate, an aluminum oxide ceramic substrate, a single crystal silicon substrate, or a silicon carbide substrate.
10. The lighting device according to claim 2, wherein the phosphor layer is made of YAG luminescent ceramic.
11. The illumination device of claim 1, wherein the laser light source is located outside the reflector, and the reflector has a light-transmissive opening, wherein the laser light is incident on the wavelength conversion region through the light-transmissive opening.
12. A lighting device as recited in claim 1, further comprising: and the second light condensation device is arranged on the light emitting path of the laser light source and is positioned between the laser light source and the wavelength conversion device.
13. A lighting device as recited in claim 1, wherein said reflective surface is a curved reflective surface.
14. A vehicular headlamp device comprising the lighting device defined in any one of claims 1-13.
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| CN201510963632.2A CN106895271B (en) | 2015-12-21 | 2015-12-21 | Lighting device and vehicle headlamp device |
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| CN201510963632.2A CN106895271B (en) | 2015-12-21 | 2015-12-21 | Lighting device and vehicle headlamp device |
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| CN106895271B true CN106895271B (en) | 2020-09-22 |
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| CN106895271A (en) | 2017-06-27 |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20171016 Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xi Li Light Road No. 1089 Shenzhen integrated circuit design and application of Industrial Park Building 4 Applicant after: Shenzhen Yili Ruiguang Technology Development Co.,Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Xi Li Light Road No. 1089 Shenzhen integrated circuit design and application of Industrial Park Building 4 Applicant before: Shenzhen Appotronics Co., Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: The utility model relates to a lighting device and a headlamp device for vehicles Effective date of registration: 20210701 Granted publication date: 20200922 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: APPOTRONICS CHINA Corp. Registration number: Y2021980005630 |