WO2020151628A1

WO2020151628A1 - Light source system and lighting apparatus comprising light source system

Info

Publication number: WO2020151628A1
Application number: PCT/CN2020/073086
Authority: WO
Inventors: 张贤鹏
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2019-01-24
Filing date: 2020-01-20
Publication date: 2020-07-30
Also published as: CN111474731A

Abstract

Provided are a light source system (10) and a lighting apparatus comprising said light source system (10), the light source system (10) comprising at least one laser (200), at least one reflective mirror (300), and a uniform light conversion assembly (400). Excitation light emitted by the laser (200) is reflected by the reflective mirror (300) and then enters the uniform light conversion assembly (400), is converted into a laser beam, and then exits the uniform light conversion assembly (400), the area of the region of the uniform light conversion assembly (400) from which the laser beam exits being smaller than the area of the surface of the uniform light conversion assembly (400) that receives the excitation light. The present light source system (10) and lighting apparatus comprising said light source system (10) reduce the volume of the light source, and enhance the uniformity of the colour and brightness of the emergent light.

Description

Light source system and lighting device including the light source system

Technical field

This application relates to the field of laser illumination, and in particular to a light source system and an illumination device including the light source system.

Background technique

Laser fluorescence technology is the main technical route to realize GaN-based blue laser white light illumination, and can also be used for monochromatic illumination of spectrum conversion, with the advantages of high brightness and stable performance.

In the laser fluorescence technology, in order to obtain the exiting beam with good directivity, it is usually necessary to use technologies such as laser excitation fluorescence, fluorescence collection, and beam shaping to achieve a smaller exit angle. At the same time, in order to obtain a high-brightness outgoing beam, it can be achieved by increasing the power of the light source or reducing the light-emitting area.

Considering the actual preparation and assembly requirements, when the laser beam irradiates the phosphor sheet, the beam is usually smaller than the area of the phosphor sheet. Since the luminous intensity of the laser fluorescent material is affected by the power density of the excitation laser, it is prone to the problem of uneven luminescence of the fluorescent sheet. After being collected, converged and shaped by the imaging system, the non-uniformity of the fluorescent light will affect the quality of the emitted light beam, so the light beam needs to be homogenized by the homogenization system.

However, the homogenization device in the usual light source system is limited by processing capacity and accuracy. For sizes below 1 mm, the use of traditional processing methods will result in a large amount of processing costs and reduce the yield.

Summary of the invention

The present application provides a light source system and a lighting device including the light source system, which can solve the problem of poor beam uniformity of the light source system in the prior art.

In order to solve the above technical problem, a technical solution adopted in this application is to provide a light source system, including: at least one laser for emitting excitation light; at least one mirror located on the optical path of the excitation light for reflecting the excitation light; The uniform light conversion component is located on the optical path of the excitation light reflected by the reflector, and is used to receive the excitation light and emit the laser light. The area of the uniform light conversion component where the laser light is emitted is smaller than that of the uniform light conversion component that receives the excitation light. The area of the surface.

According to an embodiment of the present application, the uniform light conversion assembly includes: a first uniform light element, the excitation light enters the first uniform light element from the top surface of the first uniform light element, and the top surface of the first uniform light element includes a first transparent element The light area and the selective transflective area surrounding the first light transmission area, the sidewall of the first light homogenizing element is a reflective structure, and the bottom surface of the first light homogenizing element is the second light transmission area; the wavelength conversion element is arranged in the first The bottom surface of the homogenizing element is used to absorb the excitation light and emit the received laser light, and the bottom surface of the wavelength conversion element is provided with a reflective surface; wherein the selective transflective area is used to transmit the excitation light and reflect the received laser light.

According to an embodiment of the present application, there is a gap between the first homogenizing element and the wavelength conversion element.

According to an embodiment of the present application, the area of the first light-transmitting region is smaller than the area of the second light-transmitting region.

According to an embodiment of the present application, the uniform light conversion assembly includes: a second uniform light element, the excitation light enters the second uniform light element from the top surface of the second uniform light element, and the top surface of the second uniform light element includes the first transparent element. The light area and the selective transflective area surrounding the first light transmission area, the sidewall of the second light homogenizing element is a reflective structure, and the bottom of the second light homogenizing element is provided with a wavelength conversion structure for absorbing excitation light and emitting laser light. The bottom surface of the second homogenizing element is provided with a reflective surface; wherein the selective transflective area is used to transmit the excitation light and reflect the received laser light.

According to an embodiment of the present application, the cross-section of the uniform light conversion component in the top-to-bottom direction gradually becomes smaller.

According to an embodiment of the present application, the reflecting mirror is a concave reflecting mirror or a total internal reflecting mirror.

According to an embodiment of the present application, the light source system further includes a housing, and a first heat sink and a second heat sink fixed to the housing; wherein the laser is carried on the first heat sink, and the uniform light conversion component is carried on the second heat sink. Above, the combined structure of the first heat sink and the second heat sink may be an integrated structure.

According to an embodiment of the present application, the light source system further includes a shaping lens, which is arranged on the optical path of the emitted light of the uniform light conversion component.

According to an embodiment of the present application, the main optical axis of the received laser light emitted by the uniform light conversion component is parallel to the main optical axis of the excitation light emitted by the laser.

In order to solve the above-mentioned problem, another technical solution adopted in this application is to provide a lighting device, which includes the above-mentioned light source system.

Different from the prior art, the light source system and the lighting device including the light source system provided in this application are provided with a laser, a reflector, and a homogenization conversion component, so that the excitation light emitted by the laser undergoes wavelength conversion in the homogenization conversion component to form a laser beam. After homogenization, the emitted light enhances the uniformity of the color and brightness of the emitted light.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

Fig. 1 is a schematic structural diagram of a light source system according to an embodiment of the present application;

2 is a schematic top view of a uniform light conversion component in a light source system according to an embodiment of the present application;

3 is a schematic top view of a uniform light conversion component in a light source system according to another embodiment of the present application;

4 is a schematic structural diagram of a light source system according to another embodiment of the present application;

Fig. 5 is a schematic structural diagram of a light source system according to another embodiment of the present application;

FIG. 6 is a schematic diagram of the laser light path in the uniform light conversion component in FIG. 1 of the present application.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of this application, the directional indication is only used to explain that it is in a specific posture (as shown in the drawings). If the specific posture changes, the relative positional relationship, movement, etc. of the components below will also change the directional indication accordingly.

In addition, if there are descriptions related to "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as instructions or implications Its relative importance or implicitly indicates the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions conflicts or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the scope of protection required by this application.

As shown in FIG. 1, the present application provides a light source system 10, the light source system 10 includes a laser 200, a mirror 300 and a uniform light conversion component 400.

Among them, the laser 200 is used to emit excitation light, specifically, it can be used to emit blue laser; the reflector 300 is located on the optical path of the excitation light, and is used to reflect the excitation light emitted by the laser 200; the uniform light conversion component 400 is located in the reflected light. The light path of the excitation light reflected by the mirror 300 is used to receive the excitation light and emit the received laser light, and then emit the received laser light after being homogenized. Specifically, the uniform light conversion component 400 implements wavelength conversion through fluorescent materials, and implements uniform light through multiple reflective surfaces.

In a specific embodiment, the light source system 10 may further include a housing 100, and the housing 100 may specifically be a metal housing, the material of which may be aluminum alloy or a material with good heat dissipation, and the shape of the housing 100 may be cylindrical. The housing 100 can be enclosed to form a receiving space 110.

As shown in FIG. 1, the laser 200 is arranged at the bottom of the containing space 110, and the direction of the excitation light is the direction from the bottom to the top of the containing space 110. The reflecting mirror 300 is arranged at the top position of the containing space 110, and the reflecting mirror 300 is arranged on the optical path of the excitation light emitted from the laser 200 to reflect the excitation light and make the excitation light incident into the uniform light conversion component 400.

In a specific embodiment, the reflector 300 may be a concave reflector or a total internal reflector (TIR reflector), which can greatly reduce the loss of excitation light and maximize lossless reflection.

In a specific embodiment, the uniform light conversion assembly 400 may be a whole integrated structure or a combined structure.

As shown in FIG. 4, in a specific embodiment, the homogenization conversion assembly 400 includes a first homogenization element 500a and a wavelength conversion element 600a. The wavelength conversion element 600a is disposed at the bottom of the first homogenization element 500a; The top surface of the homogenizing element 500a includes a first light-transmitting area 410 and a selective light-transmitting area 420 surrounding the first light-transmitting area 410. The first light-transmitting area 410 is used for transmitting excitation light and receiving laser light, and is selectively transmitted and reflected. The area 420 is used to transmit the excitation light and reflect the received laser light.

FIG. 2 is a top view of the uniform light conversion assembly 400. As shown in FIG. 2, the first light-transmitting area 410 may be disposed at the center of the top surface, and the selective transmission and reflection area 420 is disposed around the first light-transmitting area 410. In other embodiments, according to design requirements, as shown in FIG. 3, the first light-transmitting area 410' may also be located at a position other than the center of the top surface, and its shape may also be a circle, a square, or an ellipse. The selective transflective region 420' is arranged around the first light transmissive region 410'. The top surface of the uniform light conversion assembly 400 includes a first light transmission area 410 and a selective transmission and reflection area 420. The area of the first light transmission area 410 is smaller than that of the top surface of the uniform light conversion assembly 400, so that the uniform light conversion assembly 400 is At least a part of the received laser light reflected from the bottom surface of the uniform light conversion component 400 to the top surface of the uniform light conversion component 400 can be reflected back to the uniform light conversion component 400 by the selective transflective area 420, and reflected back and forth in the uniform light conversion component 400, until finally from the first The light-transmitting area 410 emits light, which improves the uniform light effect. The selective transflective area 420 is preferably a highly reflective mirror surface to keep the reflection angle of the fluorescent light (and/or laser light) unchanged, and the amount of optical expansion does not change when it reaches the bottom of the uniform light conversion component. The reflective structure can also be a total internal (TIR) reflective mirror surface, which can reduce its light loss and achieve lossless reflection. The bottom surface of the first homogenizing element 500 a is the second light-transmitting area 510.

The top surface of the wavelength conversion element 600a and the bottom surface of the first homogenizing element 500a are arranged directly opposite to each other, that is, the wavelength conversion element 600a is arranged at the right bottom of the first homogenizing element 500a. The wavelength conversion element 600a is provided with a wavelength conversion structure 430, the top surface is a light-transmitting surface, the bottom surface is provided with a reflective surface, the side surface of the wavelength conversion element 600a is a scattering surface, and the main part of the wavelength conversion structure 430 is a fluorescence conversion layer .

Specifically, the first homogenizing element 500a has an inverted truncated cone-shaped or inverted frustum-shaped structure, and the cross section of the top is larger than the width of the cross section. Specifically, the cross section gradually becomes smaller in the direction from the top to the bottom. , So that all the excitation light incident from the top is guided to the bottom.

In a specific embodiment, after the excitation light enters the first homogenization element 500a from the top surface of the first homogenization element 500a, since the excitation light is blue, the selective transflective region 420 is plated on the first homogenization element 500a For the blue and reflective yellow film on the top surface, the excitation light can be incident through the first light transmission region 410 or/and the selective transmission and reflection region 420. After the excitation light enters the first homogenization element 500a, it passes through the first homogenization element 500a. The light element 500a reflects back and forth and enters the wavelength conversion element 600a through the second light-transmitting area 510 at the bottom thereof, and is converted by the fluorescence conversion layer in the wavelength conversion element 600a to form a received laser light. In this embodiment, the received laser light is yellow light. The received laser light is reflected by the reflective surface at the bottom of the wavelength conversion element 600a and re-enters the first homogenizing element 500a, and is further reflected back and forth in the first homogenizing element 500a until The light exits from the first light-transmitting area 410. It can be understood that, in this embodiment, the first homogenizing element is a solid homogenizing rod, and the selective transflective area is the area on the top surface of the first homogenizing element coated with a blue translucent and yellow reflective film. In other embodiments, The first homogenizing element may also be a hollow homogenizing rod. In this case, the selective transflective region may be a selective filter covering the top opening of the first homogenizing element.

In an improved embodiment, the selective transflective region 420 also has the characteristics of transmitting excitation light with a small incident angle (for example, less than or equal to 17°) and reflecting excitation light with a large incident angle (for example, greater than 17°). In this way, part of the excitation light that enters the first homogenization element 500a but is not absorbed by the wavelength conversion element 600a will also be reflected at the selective transflective region 420, and circulate again in the first homogenization element 500a until it passes from the first transmission element. The light area 410 is emitted, which improves the utilization rate of the excitation light; another part of the excitation light is emitted from the selective transflective area 420 at a smaller angle, that is, the light emission angle of the blue light is also improved.

Since the selective transflective area 420 is coated with a transflective blue and yellow film, when the received laser light (yellow light) reaches the selective transflective area 420, it will be reflected and recirculate in the first homogenizing element 500a, thereby improving uniform light effect. Moreover, by designing the area of the first light-transmitting region 410, the angle of light emitted through the first light-transmitting region 410 can be controlled.

Further, there is a gap between the first homogenizing element 500a and the wavelength conversion element 600a, that is, the top surface of the first homogenizing element 500a and the wavelength conversion element 600a are not arranged in close contact, and there is an air gap of a certain height. The existence of the gap can make the emergent light refraction from the air to the optically dense medium when entering the first light homogenizing element 500a, and have a smaller light exit angle. In the case of a certain light-emitting area, the amount of optical expansion is further reduced, and at the same time, the refraction phenomenon makes it easier for light to undergo total internal reflection after entering the first homogenizing element 500a.

In the above-mentioned embodiment, through the cooperation of the combined first homogenization element 500a and the wavelength conversion structure 600a, the first light transmission area 410 and the selective transmission and reflection area 420 are provided on the top surface of the first homogenization element 500a to enhance The color and brightness of the emitted light are uniform, and the optical quality of the emitted light is guaranteed.

As shown in FIG. 5, in a specific embodiment, the homogenization conversion assembly 400' includes a second homogenization element 500b. The second homogenization element 500b is similar to the first homogenization element 500a, and the top surface is also provided with excitation The optical path of the light includes a first light-transmitting area and a selective transflective area surrounding the first light-transmitting area, so that the excitation light is incident from the top surface of the second homogenizing element 500b, and the sidewall of the second homogenizing element is Reflection structure.

Specifically, the bottom of the second homogenizing element 500b is provided with a wavelength conversion structure 600b, which can also be a fluorescent layer structure. It acts similarly to the wavelength conversion element in the above-mentioned embodiment, and performs wavelength conversion to absorb excitation light. In addition, the received laser light is emitted. Specifically, the bottom surface of the second homogenizing element 500b is provided with a reflective surface.

In the above embodiment, by arranging the wavelength conversion structure in the second homogenization element 500b, the volume of the entire light source system is effectively saved, and the intensity of the entire homogenization conversion assembly 400 is enhanced, and because the homogenization conversion assembly 400' It can directly contact with the heat sink, which can enhance heat dissipation.

In a specific embodiment, the incident angle of the excitation light into the uniform light conversion component 400' is smaller than the emission angle of the laser light, and the incident angle of the excitation light is smaller than the blue transmission angle of the transparent blue and reflective yellow film, so that it can be more Preferably, it enters the uniform light conversion component 400' through the selective light transmission area 420.

As shown in FIG. 5, the light source system 10 further includes a first heat sink 120 and a second heat sink 130. The laser 200 is carried on the first heat sink 120, and the uniform light conversion component 400' is carried on the second heat sink 130. The first heat sink 120 and the second heat sink 130 are fixed on the housing 100, so that the laser 200 and the uniform light conversion assembly 400' are fixed on the housing 100.

Furthermore, the first heat sink 120 and the second heat sink 130 preferably have a heat dissipation structure, which can enhance the heat dissipation of the laser 200 and the uniform light conversion component 400'.

In a specific embodiment, the first heat sink 120 and the second heat sink 130 have a combined structure and are separately assembled on the housing. The first heat sink 120 can be arranged on the base of the housing 100, and the second heat sink The sink 130 may be provided on the side wall of the housing 100.

In other embodiments, the first heat sink 120 and the second heat sink 130 are preferably an integrated structure, which can concentrate scattering, facilitate assembly, and enhance heat dissipation.

As shown in FIG. 4, in a specific embodiment, the light source system 10 further includes a shaping lens 700, and the shaping lens 70 is arranged on the optical path of the received laser light emitted from the uniform light conversion assembly 400 to shape the received laser light and emit it to form an output Shoot light. The direction of the light emitted after being shaped is the same as the direction of the excitation light emitted by the laser 200.

In a specific embodiment, as shown in FIG. 4, the light source system 10 further includes a collimating lens 800, which is arranged between the laser 200 and the mirror 300, and is used to adjust the first laser light emitted by the laser 200. With high collimation, more first laser light can be collected and emitted to the mirror 300.

As shown in FIG. 4, in a specific embodiment, there may be two lasers 100 and mirrors 300. Correspondingly, there are two second lenses 800, and the two sets of lasers 100 are arranged in the uniform light conversion assembly. 400 sides.

In other embodiments, there may be four groups, which are arranged around the uniform light conversion assembly 400 on four sides. Thus, the brightness of the light source system 10 is further enhanced.

In a specific embodiment, the reflecting mirror 300, the collimating lens 800, the shaping lens 700, etc. can all be installed and fixed on the housing 100 through a bracket.

As shown in FIG. 6, FIG. 6 is a light path diagram in a uniform light conversion assembly 400" provided by the present application. When the excitation light enters from the top surface thereof, specifically, the light-transmitting area 410" enters , It can also be incident from the selective transflective region 420", and the incident excitation light 910 is reflected back and forth to the bottom by the reflective structure provided on the side wall. Specifically, part of the excitation light 910 may be reflected multiple times At the bottom, part of the received laser light 910 can also be directly directed to the bottom for wavelength conversion, thereby forming the received laser light 920. Part of the received laser light 920 will directly exit from the light-transmitting area 410" to form the emitted received laser light 930. It will continue to reflect on the inner wall and then exit. After being reflected on the inner wall, part of the received laser light 920 will be reflected on the selective transmission and reflection area 420". Due to the selective transmission and reflection area 420, the received laser 920 will be It emits and reflects back and forth on its inner wall until it exits from the light-transmitting area 410". On the one hand, the light is circulated in the uniform light conversion assembly 400", which enhances the uniform light effect. On the one hand, the selective transmission and reflection area 420" makes the incident light area large, but on the other hand, it limits the light transmission area 410". The size of the output light makes the exit area of the emitted light small and will not escape, thereby improving the light utilization rate.

What needs to know is that for the homogenization element, if it is a square rod structure, the illuminance and color coordinates can be homogenized, but based on the principle of optical expansion, it can be known that the angle of the square rod structure will not change, and the exit is still Lambertian distribution, so it is not conducive to the light collection of the subsequent shaping lens. However, if a conical rod is used, the purpose of reducing the angle and improving the efficiency of light receiving and shaping can be achieved, but uniform color and uniform illumination cannot be achieved.

In a specific embodiment, the hollow or solid polygonal cone-rod homogenizing element can realize the uniformity of color and illuminance, and at the same time, can reduce the light emitting angle of the light source to facilitate light receiving and shaping.

However, in order to maintain high brightness and uniform light effect, it is also necessary to restrict the physical size of the uniform light element, that is, reduce the light-emitting area of the uniform light element to increase the brightness of the light source, while maintaining a certain aspect ratio to ensure the uniform light effect.

In order to achieve the homogenization effect of the homogenization element, the physical size of the homogenization element is generally less than 1mm. In terms of existing technologies such as machining and polishing, the use of traditional processing methods will lead to a large amount of processing Cost and reduce yield. However, the processing scale is limited, and the brightness of the light source will be reduced in the case of a low luminous flux light source. Especially in the optical homogenizing element, the smoothness of the optical surface, the sharpness of the corners and the inclination will affect the final optical quality.

In the grinding and polishing process, due to the mechanical fixing method, the surface of the optical element may be scratched or the optical element surface is usually fixed by wax sealing and bonding. However, with a size smaller than 1mm and a certain inclination, the machining accuracy is difficult to guarantee. Especially processing one by one will seriously affect the production rate and processing accuracy.

In the light source system provided in the present application, the homogenizing component provided by it is a cone-rod structure with a larger size, thereby avoiding processing difficulties, and a small-area transparent window is prepared on the top of the cone-rod to control the optical quantity of the cone-rod system, while other Regional high-reflection coating or equivalent process realizes the light recycling of laser fluorescence and improves the light output efficiency of the system; adopts a folded reflective optical path to achieve the consistency of the laser light direction and the light source system light direction, and realizes laser protection; adopts reflective fixed fluorescence The film realizes the separation of light and heat, improves the withstand power of the light transfer material to the laser, and reduces the reliability problems caused by the use of motors; the blue and yellow reflective film or reflective film of the top light cycle has specular reflection characteristics to maintain reflection The amount of optical expansion remains unchanged, so that the non-transmissive light can return to the fluorescent layer or the bottom of the light rod to reflect again, thereby increasing the light recycling rate.

Furthermore, while pursuing high-brightness, small-area light sources and homogenizing devices, while taking into account the problems of component processing and production, through optimized optical system and optical core component improvement, reasonable optical components and optical systems are designed to achieve ideal homogenization characteristics It also provides a reasonable preparation plan, solves the preparation problems of the core homogenization device, and provides a compact laser fluorescent light source structure with excellent optical characteristics, and at the same time provides a light source that combines the advantages of a square rod and can realize a circular spot without a diaphragm. Structural scheme.

The application also provides a lighting device, which includes the above-mentioned light source system 10, which can be applied to portable laser fluorescent lighting light source systems, laser fluorescent systems for vehicles, and corresponding laser fluorescent light source products, especially with fixed light conversion The ultra-small laser light source of the component.

The above are only implementations of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made by using the description and drawings of this application, or directly or indirectly applied to other related technical fields, The same reasoning is included in the scope of patent protection of this application.

Claims

A light source system, characterized in that the light source system includes:

At least one laser for emitting excitation light;

At least one reflecting mirror, located on the optical path of the excitation light, for reflecting the excitation light;

The uniform light conversion component is located on the optical path of the excitation light reflected by the reflector, and is used to receive the excitation light and emit the received laser. The area of the uniform light conversion component where the laser is emitted is smaller than the area The area of the surface of the uniform light conversion component that receives the excitation light.
The light source system according to claim 1, wherein the uniform light conversion component comprises:

The first homogenizing element, the excitation light enters the first homogenizing element from the top surface of the first homogenizing element, and the top surface of the first homogenizing element includes a first light-transmitting area and surrounding the The selective transflective area of the first light-transmitting area, the sidewall of the first light homogenizing element is a reflective structure, and the bottom surface of the first light homogenizing element is the second light-transmitting area;

A wavelength conversion element arranged on the bottom surface of the first homogenizing element for absorbing the excitation light and emitting the received laser light, and the bottom surface of the wavelength conversion element is provided with a reflective surface;

Wherein, the selective transflective area is used to transmit the excitation light and reflect the received laser light.
The light source system according to claim 2, wherein there is a gap between the first homogenizing element and the wavelength conversion element.
The light source system according to claim 2, wherein the area of the first light-transmitting area is smaller than the area of the second light-transmitting area.
The light source system according to claim 1, wherein the uniform light conversion component comprises:

The second homogenizing element, the excitation light enters the second homogenizing element from the top surface of the second homogenizing element, and the top surface of the second homogenizing element includes a first light-transmitting area and surrounding the The selective transflective area of the first light-transmitting area, the sidewall of the second light homogenizing element is a reflective structure, and the bottom of the second light homogenizing element is provided with a wavelength conversion structure for absorbing the excitation light and emitting laser , The bottom surface of the second homogenizing element is provided with a reflective surface;

Wherein, the selective transflective area is used to transmit the excitation light and reflect the received laser light.
The light source system according to claim 2 or 5, wherein the cross section of the uniform light conversion component gradually becomes smaller in the direction from the top to the bottom.
The light source system according to claim 1, wherein the reflecting mirror is a concave reflecting mirror or a total internal reflecting mirror.
4. The light source system according to claim 1, further comprising a housing, and a first heat sink and a second heat sink fixed to the housing;

Wherein, the laser is carried on a first heat sink, the uniform light conversion component is carried on a second heat sink, and the first heat sink and the second heat sink have a combined structure or an integrated structure.
The light source system according to claim 1, wherein the light source system further comprises a shaping lens, and the shaping lens is arranged on the optical path of the received laser light emitted from the uniform light conversion component.
The light source system according to claim 1, wherein the main optical axis of the received laser light emitted by the uniform light conversion component is parallel to the main optical axis of the excitation light emitted by the laser.
A lighting device, characterized in that the lighting device comprises the light source system according to any one of claims 1-10.