CN114719199A

CN114719199A - Laser light source and lighting device

Info

Publication number: CN114719199A
Application number: CN202210318992.7A
Authority: CN
Inventors: 王强
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-08

Abstract

The application discloses laser source and lighting device belongs to the projection display field. The laser light source includes: the device comprises a laser, a light splitting component, a first reflecting component, a second reflecting component, a light combining component and a fluorescent component. The laser beam emitted by the laser in the laser source can generate white light only through the matching of the light splitting component, the first reflecting component, the second reflecting component, the fluorescent component and the light combining component. Therefore, the number of optical devices included in the laser light source is reduced, and the volume of the whole laser light source is reduced. Therefore, the overall volume of the lighting device integrated with the laser light source is small.

Description

Laser light source and lighting device

Technical Field

The application relates to the field of projection display, in particular to a laser light source and a lighting device.

Background

With the development of the optoelectronic technology, the color rendering of the light emitted by the lighting device is more and more required. High color rendering illumination devices are commonly used in medical lighting and projection displays.

Currently, lighting devices generally comprise: laser light sources and other optical components. The laser light source generally includes: the device comprises a laser, a diffusion sheet, a dichroic mirror, a collimating lens group, a fluorescent color wheel and a relay loop lens group. The fluorescent color wheel has a laser transmission area and an excitation area coated with phosphor. The relay loop lens group includes: the optical path turning system consists of a plurality of lenses and a plurality of reflectors. Laser beams emitted by the laser are diffused by the diffusion sheet, penetrate through the dichroic mirror, are collimated by the collimating mirror group and are guided to the fluorescent color wheel. When the laser beam irradiates the laser transmission area on the fluorescent color wheel, the laser beam penetrates through the laser transmission area, is bent by the relay circuit mirror group and is emitted out through the dichroic mirror. When the laser beam irradiates the excitation area coated with the fluorescent powder, the laser beam excites the fluorescent powder to emit fluorescent light, and the fluorescent light is guided to the dichroic mirror through the collimating mirror group after being reflected. The laser beam reflected by the dichroic mirror is combined with the laser beam transmitted through the dichroic mirror and guided to other optical components (e.g., a dodging component) at the rear end.

However, the existing laser light source includes more optical devices, which results in a larger volume of the whole laser light source, and further results in a larger volume of the whole illumination device.

Disclosure of Invention

The embodiment of the application provides a laser light source and a lighting device. The problem that the whole volume of a laser light source in the prior art is large can be solved, the technical scheme is as follows:

in one aspect, a laser light source is provided, the laser light source comprising:

the device comprises a laser, a light splitting component, a first reflecting component, a second reflecting component, a light combining component and a fluorescent component;

the laser is used for emitting laser beams;

the light splitting assembly is positioned on the light emitting side of the laser and used for guiding first laser in the laser beams to the first reflecting assembly and guiding second laser in the laser beams to the second reflecting assembly;

the first reflecting assembly is used for guiding the first laser to the light combining assembly;

the second reflecting assembly is used for guiding the second laser to the fluorescent assembly;

the fluorescent component is used for emitting fluorescent light to the second reflecting component under the excitation action of the second laser;

the second reflecting assembly is also used for guiding the fluorescent light to the light combining assembly;

the light combination component is used for combining the first laser and the fluorescence.

In another aspect, there is provided a lighting device, including:

the laser source is any one of the laser sources given in the above.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a laser light source comprising: the device comprises a laser, a light splitting component, a first reflecting component, a second reflecting component, a light combining component and a fluorescent component. The laser beam emitted by the laser in the laser source can generate white light only through the matching of the light splitting component, the first reflecting component, the second reflecting component, the fluorescent component and the light combining component. Therefore, the number of optical devices included in the laser light source is reduced, and the volume of the whole laser light source is reduced. Therefore, the overall volume of the lighting device integrated with the laser light source is small. In addition, since the laser in the laser light source employs the LD laser, the etendue of the LD laser is small. Therefore, the subsequent optical system can receive light conveniently, and the utilization efficiency of light energy is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a laser light source provided in an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating an arrangement of optical devices in a laser light source according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of an arrangement of a fluorescent assembly and other optical devices in a laser light source according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating an arrangement of optical devices in another laser light source provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another laser light source provided in an embodiment of the present application;

fig. 6 is a block diagram of a lighting device according to an embodiment of the present disclosure.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a laser light source according to an embodiment of the present disclosure. The laser light source 000 may include: the laser device comprises a laser 100, a light splitting assembly 200, a first reflecting assembly 300, a second reflecting assembly 400, a light combining assembly 500 and a fluorescent assembly 600.

The laser 100 in the laser light source 000 may be used to emit a laser beam.

The light splitting assembly 200 in the laser light source 000 may be located on the light emitting side of the laser 100, and is configured to direct a first laser light in the laser light beam emitted by the laser 100 to the first reflecting assembly 300 in the laser light source 000, and direct a second laser light 400 in the laser light beam to the second reflecting assembly 400.

The first reflecting assembly 300 in the laser light source 000 may be used to direct the first laser light to the light combining assembly 500 in the laser light source 000. The second reflective assembly 400 in the laser light source 000 may be used to direct the second laser light to the fluorescent assembly 600. The fluorescent component 600 can be used for emitting fluorescent light to the second reflecting component 400 under the excitation of the second laser, and the second reflecting component 400 can also be used for guiding the fluorescent light emitted by the fluorescent component 600 to the light combining component 500.

The light combining component 500 in the laser light source may be configured to combine the first laser light in the laser light beam and the fluorescent light excited by the fluorescent component 600, and emit the combined laser light beam.

The laser 100 in the laser light source 000 may be configured to emit blue laser light to the light splitting assembly 200, where the wavelength of the blue laser light may be 445 nm to 470 nm. Thus, the fluorescent component 600 is excited by the blue light with a short wavelength to generate fluorescence, and the blue light and the fluorescence (e.g., yellow fluorescence) are combined to form white light, and the color rendering property of the white light formed by the combination is good. For example, the Laser 100 may be a semiconductor (LD) Laser, which emits Laser beams with good directivity and controllability and a small etendue. Thus, the etendue of the laser beam emitted from the LD laser is small. Therefore, the subsequent optical system can receive light conveniently, and the utilization efficiency of light energy is effectively improved. It should be noted that in other possible implementations, the laser 100 may also employ other types of lasers, such as a Light Emitting Diode (LED) laser.

In addition, the first laser light and the second laser light in the laser beam emitted by the laser 100 may be laser light of the same color, for example, both blue laser light. The second laser is used for irradiating the fluorescent component 600 to excite the fluorescent component 600 to generate fluorescence, and the first laser is used for combining the fluorescence generated by the fluorescent component 600 with the first laser.

In the present application, the laser 100 in the laser light source 000 may emit a laser beam, and the laser beam is first split by the splitting component 200; then, the light splitting assembly 200 guides the first laser light in the laser beam to the first reflecting assembly 300, and guides the second laser light to the second reflecting assembly 400; then, the first reflection assembly 300 guides the first laser to the light combining assembly 500, the second reflection assembly 400 guides the second laser to the fluorescence assembly 600, the fluorescence assembly 600 generates fluorescence under the excitation of the second laser, and the fluorescence is guided to the light combining assembly 500 through the second reflection assembly 400; finally, the first laser and the fluorescence are combined at the light combining component 500, and the light combining component 500 emits the combined laser beam. In this case, the laser beam emitted by the laser 100 in the laser light source 000 only needs to pass through the matching of the light splitting assembly 200, the first reflecting assembly 300, the second reflecting assembly 400, the fluorescent assembly 600 and the light combining assembly 500, and thus the light can be combined to form white light. Therefore, the number of optical devices included in the laser light source 000 is reduced, and the volume of the entire laser light source 000 is reduced. Thus, the overall volume of the lighting device into which the laser light source 000 is integrated is made small. In addition, since the laser 100 in the laser light source 000 employs an LD laser, the etendue of the LD laser is small. Therefore, the subsequent optical system can receive light conveniently, and the utilization efficiency of light energy is effectively improved.

In summary, the embodiment of the present application provides a laser light source, which may include: the device comprises a laser, a light splitting component, a first reflecting component, a second reflecting component, a light combining component and a fluorescent component. The laser beam emitted by the laser in the laser source can generate white light only through the matching of the light splitting component, the first reflecting component, the second reflecting component, the fluorescent component and the light combining component. Therefore, the number of optical devices included in the laser light source is reduced, and the volume of the whole laser light source is reduced. Therefore, the overall volume of the lighting device integrated with the laser light source is small. In addition, since the laser in the laser light source employs the LD laser, the etendue of the LD laser is small. Therefore, the subsequent optical system can receive light conveniently, and the utilization efficiency of light energy is effectively improved.

Optionally, there are various realizations for the arrangement of the optical devices in the laser light source 000 in the embodiment of the present application, and the embodiment of the present application will be schematically described in the following two alternative realizations:

referring to fig. 2, fig. 2 is a schematic layout diagram of optical devices in a laser light source according to an embodiment of the present disclosure. The laser 100, the light splitting assembly 200, and the second reflection assembly 400 in the laser light source 000 may be arranged in sequence along a target direction (Y-axis direction in the drawing). The arrangement direction of the light splitting assembly 200 and the first reflection assembly 300 is perpendicular to the target direction, the arrangement direction of the light combining assembly 500 and the second reflection assembly 400 is perpendicular to the target direction, and the arrangement direction of the first reflection assembly 300 and the light combining assembly 500 is parallel to the target direction. That is, the arrangement direction of the light splitting assembly 200 and the first reflecting assembly 300 is the X-axis direction in the drawing, the arrangement direction of the light combining assembly 500 and the second reflecting assembly 400 is the X-axis direction in the drawing, and the arrangement direction of the first reflecting assembly 300 and the light combining assembly 500 is the Y-axis direction in the drawing.

The light splitting assembly 200 may be configured to reflect the first laser beam toward the first reflecting assembly 300 and transmit the second laser beam toward the second reflecting assembly 400. In this case, since the arrangement direction of the laser 100, the light splitting assembly 200, and the second reflecting assembly 400 in the laser light source 000 is perpendicular to the arrangement direction of the light splitting assembly 200 and the first reflecting assembly 300, and the arrangement direction of the light combining assembly 500 and the second reflecting assembly 400 is perpendicular to the arrangement direction of the laser 100, the light splitting assembly 200, and the second reflecting assembly 400. And the arrangement direction of the first reflecting assembly 300 and the light combining assembly 500 is parallel to the arrangement direction of the laser 100, the light splitting assembly 200 and the second reflecting assembly 400. Therefore, the arrangement of the laser 100, the light splitting assembly 200, the first reflecting assembly 300, the second reflecting assembly 400 and the light combining assembly 500 in the laser light source 000 is compact, and further, the width of the laser light source 000 in the X-axis direction in the drawing is small, and the width in the Y-axis direction in the drawing is also small. In this manner, the volume of the entire laser light source 000 can be made small. In addition, the laser light source 000 in the embodiment of the present application does not need to arrange a relay loop mirror group in the optical path, so that the volume of the whole laser light source 000 is further reduced.

For example, the laser 100 in the laser light source 000 may emit a laser beam, and the laser beam is first split by the splitting assembly 200; then, the light splitting assembly 200 reflects the first laser light in the laser beam to the first reflecting assembly 300, and transmits the second laser light to the second reflecting assembly 400; then, the first reflecting assembly 300 reflects the first laser light to the light combining assembly 500, the second reflecting assembly 400 guides the second laser light to the fluorescent assembly 600, the fluorescent assembly 600 generates fluorescent light under the excitation of the second laser light, the fluorescent assembly 600 reflects the fluorescent light to the second reflecting assembly 400, and the second reflecting assembly 400 guides the fluorescent light to the light combining assembly 500; finally, the first laser and the fluorescence are combined at the light combining component 500, and the light combining component 500 emits the combined laser beam. For example, the light splitting assembly 200 in the laser light source 000 may be a transmission mirror, and the transmittance and the reflectance of the transmission mirror may be changed by designing different film layers on the transmission mirror in actual needs; the first reflecting assembly 300 may be a mirror that reflects laser light of any color; the second reflective assembly 400 may be a dichroic mirror that transmits blue light and reflects fluorescent light; the light combining component 500 may be a dichroic mirror that reflects blue light and transmits fluorescence, or the light combining component 500 may be a dichroic mirror that transmits blue light and reflects fluorescence.

It should be noted that, in the first alternative implementation, there are many possible situations for the arrangement positions of the fluorescent component 600 and other optical devices in the laser light source 000, and the following embodiments of the present application will be schematically illustrated in the following two possible situations:

in a first possible case, as shown in fig. 2, the laser 100, the light splitting assembly 200, the second reflecting assembly 400, and the fluorescent assembly 600 in the laser light source 000 may be sequentially arranged in a target direction. The second reflection assembly 400 may be configured to transmit the second laser to the fluorescent assembly 600, the second laser excites the fluorescent assembly 600 to generate fluorescence, the second reflection assembly 400 reflects the fluorescence to the light combining assembly 500, and the first laser and the fluorescence are combined at the light combining assembly 500 and then emitted. That is, the arrangement direction of the laser 100, the light splitting assembly 200, the second reflecting assembly 400 and the fluorescent assembly 600 is the Y-axis direction in the figure.

For example, the laser 100 in the laser light source 000 may emit a laser beam, and the laser beam is first split by the splitting assembly 200; then, the light splitting assembly 200 reflects the first laser light in the laser beam to the first reflecting assembly 300, and transmits the second laser light to the second reflecting assembly 400; then, the first reflecting assembly 300 reflects the first laser light to the light combining assembly 500, the second reflecting assembly 400 transmits the second laser light to the fluorescent assembly 600, the fluorescent assembly 600 generates fluorescence under the excitation of the second laser light, the fluorescent assembly 600 reflects the fluorescence to the second reflecting assembly 400, and the second reflecting assembly 400 reflects the fluorescence to the light combining assembly 500; finally, the first laser light and the fluorescence are combined at the light combining assembly 500.

Referring to fig. 3, fig. 3 is a schematic layout diagram of a fluorescent module and other optical devices in a laser light source according to an embodiment of the present disclosure. The fluorescent member 600, the second reflecting member 400 and the light combining member 500 in the laser light source 000 may be sequentially arranged in a direction perpendicular to the target direction. The second reflection assembly 400 may be configured to reflect the second laser in the laser beam to the fluorescent assembly 600, the second laser excites the fluorescent assembly 600 to generate fluorescence, the second reflection assembly 400 transmits the fluorescence to the light combining assembly 500, and the first laser and the fluorescence are combined at the light combining assembly 500 and then emitted. That is, the arrangement direction of the fluorescent assembly 600, the second reflective assembly 400 and the light combining assembly 500 is the X-axis direction in the figure.

For example, the laser 100 in the laser light source 000 may emit a laser beam, and the laser beam is first split by the splitting assembly 200; then, the light splitting assembly 200 reflects the first laser light in the laser beam to the first reflecting assembly 300, and transmits the second laser light to the second reflecting assembly 400; then, the first reflecting assembly 300 reflects the first laser light to the light combining assembly 500, the second reflecting assembly 400 reflects the second laser light to the fluorescent assembly 600, the fluorescent assembly 600 generates fluorescence under the excitation of the second laser light, the fluorescent assembly 600 reflects the fluorescence to the second reflecting assembly 400, and the second reflecting assembly 400 transmits the fluorescence to the light combining assembly 500; finally, the first laser light and the fluorescence are combined at the light combining assembly 500. For example, the light splitting assembly 200 may be a transmission mirror; the first reflecting assembly 300 may be a mirror that reflects laser light of any color; the second reflective assembly 400 may be a dichroic mirror that reflects blue light, transmits fluorescent light; the light combining component 500 may be a dichroic mirror that reflects blue light and transmits fluorescence, or the light combining component 500 may be a dichroic mirror that transmits blue light and reflects fluorescence.

Referring to fig. 4, fig. 4 is a schematic layout diagram of optical devices in another laser light source according to an embodiment of the present application. The laser 100, the light splitting assembly 200, and the first reflecting assembly 300 of the laser light source 000 may be sequentially arranged in a target direction (i.e., a Y-axis direction in the drawing). The arrangement direction of the light splitting assembly 200 and the second reflecting assembly 400 is perpendicular to the target direction, and the arrangement direction of the light combining assembly 500 and the first reflecting assembly 300 is perpendicular to the target direction. And the fluorescent assembly 600, the second reflective assembly 400 and the light combining assembly 500 may be sequentially arranged along a direction parallel to the target direction. The light splitting assembly 200 of the laser light source 000 may be configured to transmit a first laser beam to the first reflection assembly 300 and reflect a second laser beam to the second reflection assembly 400. That is, the arrangement direction of the light splitting assembly 200 and the second reflection assembly 400 is the X-axis direction in the drawing, the arrangement direction of the light combining assembly 500 and the first reflection assembly 300 is the X-axis direction in the drawing, and the arrangement direction of the fluorescence assembly 600, the second reflection assembly 400 and the light combining assembly 500 is the Y-axis direction in the drawing.

For example, the laser 100 in the laser light source 000 may emit a laser beam, and the laser beam is first split by the splitting assembly 200; then, the light splitting assembly 200 transmits the first laser light of the laser beam to the first reflecting assembly 300, and reflects the second laser light to the second reflecting assembly 400; then, the first reflecting assembly 300 reflects the first laser light to the light combining assembly 500, the second reflecting assembly 400 reflects the second laser light to the fluorescent assembly 600, the fluorescent assembly 600 generates fluorescent light under the excitation of the second laser light, the fluorescent assembly 600 reflects the fluorescent light to the second reflecting assembly 400, and the second reflecting assembly 400 transmits the fluorescent light to the light combining assembly 500; finally, the first laser light and the fluorescence are combined at the light combining assembly 500. For example, the light splitting assembly 200 may be a transmission mirror; the first reflecting assembly 300 may be a mirror that reflects laser light of any color; the second reflective assembly 400 may be a dichroic mirror that reflects blue light, transmits fluorescent light; light combining component 500 may be a dichroic mirror that reflects fluorescent light and transmits blue light.

In this case, since the arrangement direction of the laser 100, the optical splitting assembly 200, and the first reflecting assembly 300 is perpendicular to the arrangement direction of the optical splitting assembly 200 and the second reflecting assembly 400. The arrangement directions of the laser 100, the light splitting assembly 200 and the first reflecting assembly 300 are also perpendicular to the arrangement directions of the light combining assembly 500 and the first reflecting assembly 300, and are parallel to the arrangement directions of the fluorescent assembly 600, the second reflecting assembly 400 and the light combining assembly 500. Therefore, the arrangement of the laser 100, the light splitting assembly 200, the first reflecting assembly 300, the second reflecting assembly 400, the light combining assembly 500 and the fluorescent assembly 600 in the laser light source 000 is compact. In this manner, the volume of the entire laser light source 000 can be made small.

In the embodiment of the present application, please refer to fig. 5, and fig. 5 is a schematic structural diagram of another laser light source provided in the embodiment of the present application. When the arrangement direction of the laser 100 and the fluorescent component 600 in the laser light source 000 is perpendicular to the target direction, the laser light source 000 may further include: a heat sink assembly 700, the heat sink assembly 700 may be in contact with both the laser 100 and the phosphor assembly 600. In this case, since the laser 100 generates a certain amount of heat during the emission of the laser beam, in addition, a part of the light energy is converted into heat energy during the process of the laser beam irradiating the fluorescent assembly 600 to excite the fluorescent light. Therefore, in order to ensure the normal operation of the laser 100 and the fluorescent assembly 600, the heat dissipation assembly 700 is required to dissipate heat of the laser 100 and the fluorescent assembly 600. In the present application, the laser 100 and the fluorescent member 600 in the laser light source 000 are arranged in a direction perpendicular to the target direction, so that the laser 100 and the fluorescent member 600 can share one heat dissipation member 700 in the laser light source 000. In this way, heat dissipation of heat generated during operation of the laser 100 and the phosphor assembly 600 can be achieved. And a heat dissipation assembly 700 is not required to be respectively arranged on the laser 100 and the fluorescent assembly 600, so that the overall volume of the laser light source 000 is effectively reduced.

Optionally, because the second laser in the laser beams emitted by the laser 100 is used to irradiate the fluorescent component 600 to excite fluorescence, the first laser is used to combine with the fluorescence at the light combining component 500 to form white light. In addition, a part of light energy of the second laser is converted into heat energy in the process of irradiating the fluorescent component 600 to excite the fluorescent light, and the first laser (i.e. blue light) has little influence on the synthesized white light. Therefore, the first laser light in the laser beam emitted by the laser 100 has a smaller proportion in the laser beam than the second laser light.

For example, the first laser may be a% in the laser beam and the second laser may be b% in the laser beam. For example, 10% of the first laser light is reflected by the first reflecting assembly 300 to the light combining assembly 500, and 90% of the second laser light is used to excite the fluorescent assembly 600 to generate fluorescence, which is combined with the first laser light. The ratio of the first laser beam and the second laser beam in the laser beam may be adjusted appropriately according to the difference in the color temperature of the laser beam, and this embodiment is not particularly limited thereto. For example, the color temperature of blue is generally higher, and in the case that the color temperature set in actual design needs is lower, the color temperature can be achieved by increasing the proportion of the first laser (i.e. blue light) and reducing the proportion of the second laser; when the set color temperature is higher, the method can be realized by reducing the proportion of the first laser and increasing the proportion of the second laser.

In the embodiment of the present application, as shown in fig. 5, the fluorescent member 600 in the laser 000 may include: a reflection part 601, and a fluorescent part 602 located at one side of the reflection part 601 close to the second reflection assembly 400. In this way, when the second laser beam of the laser beam is irradiated onto the fluorescent portion 602 of the fluorescent module 600, the laser beam excites the fluorescent material located on the fluorescent portion 602, the fluorescent material generates fluorescence by the excitation of the laser beam, and the reflective portion 601 reflects the fluorescence.

In the present application, phosphor assembly 600 may be a stationary phosphor assembly, e.g., a stationary phosphor plate. The fixed fluorescent component 600 does not need to be provided with a driving part, so that the occupied space of the fluorescent component 600 in the laser light source 000 is favorably reduced, and the miniaturization design of the laser light source 000 is favorably realized. In some special optical systems, the non-fixed fluorescent components alternately generate fluorescent light under the driving of the driving component, but the driving component may vibrate when driving the fluorescent components to rotate, which may affect the reliability of the system. And the fixed fluorescent component can effectively avoid the bad phenomenon that the fluorescent component vibrates relatively to the non-fixed fluorescent component. It should be noted that the number of the fluorescent members 600 in the present application is at least one. For example, there may be one or two, and the present application is not limited to this.

Alternatively, the fluorescent material on the fluorescent part 602 in the fluorescent assembly 600 may be formed by bonding separated phosphors into layers by organic adhesives such as silicon gel or epoxy resin; or, the separated phosphor is bonded into layers by an inorganic adhesive such as glass; alternatively, the phosphor material may be a phosphor ceramic, which is a structure having a continuous ceramic as a medium and phosphor particles distributed in the ceramic. The fluorescent material is not particularly limited in the examples of the present application.

In the embodiment of the present application, the laser 100 in the laser light source 000 may be a blue laser, both the first laser and the second laser may be blue lasers, and the fluorescent component 600 generates yellow fluorescent light after being excited by the laser beam. In this way, the blue laser irradiates the fluorescent component 600, and the yellow phosphor in the fluorescent component 600 is excited to generate yellow fluorescent light, so that the blue light and the yellow fluorescent light are combined into white light. It should be noted that, in other possible implementation manners, the phosphor in the phosphor assembly 600 may be red phosphor + green phosphor; or, yellow phosphor + green phosphor; or, the yellow phosphor + the red phosphor, which is not specifically limited in this application.

An embodiment of the present application further provides a lighting device, please refer to fig. 6, and fig. 6 is a block diagram of a structure of the lighting device provided in the embodiment of the present application. The lighting device may include: a laser light source 000 and a dodging assembly 001. The laser light source 000 may be any of the laser light sources given in the above embodiments. The laser beams emitted by the laser light source 000 are combined and then guided to the light uniformizing assembly 001, and the light uniformizing assembly 001 can uniformize the laser beams. The illumination device can be applied to medical illumination. For example, the light homogenizing assembly 001 may be a fly-eye lens or a light guide, which is not specifically limited in this embodiment.

It should be noted that the laser light source 000 may also be applied to a laser projection apparatus to provide an illumination beam for imaging of the laser projection apparatus.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended only to illustrate the alternative embodiments of the present application, and should not be construed as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser light source, comprising: the device comprises a laser, a light splitting component, a first reflecting component, a second reflecting component, a light combining component and a fluorescent component;

the laser is used for emitting laser beams;

2. The laser light source according to claim 1, wherein the laser, the beam splitting assembly and the second reflecting assembly are sequentially arranged along a target direction, the arrangement direction of the beam splitting assembly and the first reflecting assembly is perpendicular to the target direction, the arrangement direction of the light combining assembly and the second reflecting assembly is perpendicular to the target direction, and the arrangement direction of the first reflecting assembly and the light combining assembly is parallel to the target direction;

the light splitting assembly is used for reflecting the first laser to the first reflecting assembly and transmitting the second laser to the second reflecting assembly.

3. The laser light source of claim 2, wherein the laser, the light splitting component, the second reflecting component and the fluorescent component are arranged in sequence along the target direction, and the second reflecting component is configured to transmit the second laser light to the fluorescent component and reflect the fluorescent light to the light combining component;

or the fluorescent component, the second reflecting component and the light combining component are sequentially arranged along the direction perpendicular to the target direction, and the second reflecting component is used for reflecting the second laser to the fluorescent component and transmitting the fluorescent light to the light combining component.

4. The laser light source of claim 1, wherein the laser, the light splitting component and the first reflecting component are sequentially arranged along a target direction, the arrangement direction of the light splitting component and the second reflecting component is perpendicular to the target direction, the arrangement direction of the light combining component and the first reflecting component is perpendicular to the target direction, and the fluorescent component, the second reflecting component and the light combining component are sequentially arranged parallel to the target direction;

the light splitting component is used for transmitting the first laser to the first reflecting component and reflecting the second laser to the second reflecting component.

5. The laser light source of claim 4, wherein the laser and the fluorescent component are arranged in a direction perpendicular to the target direction, and the laser light source further comprises: a heat sink assembly in simultaneous contact with the laser and the phosphor assembly.

6. The laser light source according to any one of claims 1 to 5, wherein a proportion of the first laser light in the laser light beam is smaller than a proportion of the second laser light in the laser light beam.

7. The laser light source according to any one of claims 1 to 5, wherein the light splitting component is a transmission reflector, the first reflecting component is a reflector, and the second reflecting component and the light combining component are both dichroic mirrors.

8. The laser light source of any one of claims 1 to 5, wherein the phosphor assembly comprises: the reflecting part and the fluorescent part are positioned on one side of the reflecting part close to the second reflecting component.

9. The laser light source according to any one of claims 1 to 5, wherein the laser is a blue laser, the first laser light and the second laser light are both blue laser light, and the fluorescence is yellow fluorescence.

10. An illumination device, comprising: a laser light source and a dodging assembly, wherein the laser light source is the laser light source in any one of the claims 1 to 9.