CN215813711U

CN215813711U - Light emitting device, DLP module and projection equipment

Info

Publication number: CN215813711U
Application number: CN202121824909.0U
Authority: CN
Inventors: 胡飞; 郭祖强; 杨炳柯; 王文杰; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-02-11
Anticipated expiration: 2031-08-05

Abstract

The application discloses illuminator, DLP module and projection equipment relates to digital projection display technical field. The light-emitting device comprises an RGB laser, a fluorescent component and a light combination component; the RGB laser is used for outputting laser, and the laser comprises red laser, green laser and/or blue laser; the fluorescent component is used for outputting yellow fluorescent light; the light combination component is arranged on the light emitting paths of the RGB laser and the fluorescent component and is used for combining the laser and the yellow fluorescent light. The application can give consideration to the miniaturization and the light-emitting effect of the size.

Description

Light emitting device, DLP module and projection equipment

Technical Field

The application relates to the technical field of digital projection display, in particular to a light-emitting device, a DLP module and projection equipment.

Background

With the continuous progress of projection technology, in order to meet the demand for miniaturization, DLP (Digital Light Processing) projection systems, which generally include a projection Light source and a DMD (Digital Micromirror Device) chip, are emerging. The projection light source usually adopts a traditional laser fluorescent light source, an LED light source or a three-color pure laser light source as a light emitting device.

The traditional laser fluorescent light source uses blue laser to excite a fluorescent color wheel, and white light is obtained after mixing. However, the fluorescent color wheel needs a color wheel motor to drive, and the size of the color wheel motor is too large, which results in a larger overall size of the light source.

In the conventional ultra-thin small projection Light source on the market, an LED (Light Emitting Diode) Light source or a three-color pure laser Light source is commonly used. However, the common LED light source emits light in lambertian manner, has a large optical expansion amount, cannot be effectively utilized by an optical machine, and has low brightness and low light source efficiency. And the three-color pure laser light source has serious picture speckle due to the characteristics of the laser.

Therefore, in summary, the conventional light emitting device cannot achieve both the size reduction and the light emitting effect.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application provides a light emitting device to solve the above technical problems.

To achieve the above object, the present application provides a light emitting device, which includes an RGB laser, a fluorescent component, and a light combining component:

the RGB laser is used for outputting laser, and the laser comprises red laser, green laser and/or blue laser;

the fluorescent component is used for outputting yellow fluorescent light;

the light combination component is arranged on the light emitting paths of the RGB laser and the fluorescent component and is used for combining the laser and the yellow fluorescent light.

In order to solve the technical problem, another technical scheme adopted by the application is to provide a DLP module, wherein the DLP module comprises a light-emitting device, a DMD chip and a DLP controller; wherein the content of the first and second substances,

the light-emitting device is the light-emitting device;

the DMD chip is arranged on an emergent light path of the light-emitting device;

the DLP controller is respectively connected with the light-emitting device and the DMD chip and is used for controlling the DMD chip to output the image light beam.

In order to solve the above technical problem, another technical solution adopted by the present application is to provide a projection apparatus, where the projection apparatus includes a DLP module and a projection lens; wherein the content of the first and second substances,

the DLP module is the DLP module;

the projection lens is arranged on an emergent light path of the image light beam output by the DMD chip and is used for projecting the image light beam to an external projection surface.

Has the advantages that: be different from prior art, this application is through will closing the optical subassembly and set up on RGB laser instrument and fluorescence subassembly's emergent light path for close the optical subassembly and can close the light to the laser of RGB laser instrument outgoing and the yellow fluorescence of fluorescence subassembly outgoing, with realize the light of each well colour after closing the light, so can need not to adopt the colour wheel motor, can reduce illuminator's volume. And because the light that light emitting device finally emergent in this embodiment is realized by laser and yellow fluorescence light combination, for the pure laser light source of three-colour, the light emitting device of this application can effectively weaken the speckle. Therefore, the present application can achieve both downsizing and a light emitting effect.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a light-emitting device of the present application;

FIG. 2 is a schematic diagram of a structure of an area membrane of an embodiment of a light emitting device of the present application;

fig. 3 is a schematic structural view of a second embodiment of a light-emitting device of the present application;

fig. 4 is a schematic structural view of a third embodiment of a light-emitting device of the present application;

FIG. 5 is a schematic structural diagram of the DLP module of the present application;

fig. 6 is a schematic structural diagram of a projection apparatus of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the present application is described in further detail below with reference to the accompanying drawings and the detailed description. It is to be understood that the described embodiments are merely some embodiments of the present application and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application belong to the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a light emitting device according to a first embodiment of the present application.

As shown in fig. 1, the light emitting device 100 includes an RGB laser 110, a fluorescent component 120, and a light combining component 130.

The RGB laser 110 is used to output laser light, which includes red laser light, green laser light, and/or blue laser light. In one embodiment, the RGB laser 110 may output red laser light, green laser light, and blue laser light in a time-sharing manner. In another embodiment, the RGB laser 110 may simultaneously output at least two of red laser light, green laser light, and blue laser light. For example, the RGB laser 110 may output blue laser light and green laser light at the same time, or output blue laser light and red laser light at the same time.

The fluorescent member 120 is used to output yellow fluorescence.

The light combining component 130 is disposed on the light emitting paths of the RGB laser 110 and the fluorescent component 120, and is configured to combine the laser light and the yellow fluorescent light.

In the present application, the light combining component 130 is disposed on the light emitting paths of the RGB laser 110 and the fluorescent component 120, so that the light combining component 130 can combine the laser light emitted from the RGB laser 110 and the yellow fluorescent light emitted from the fluorescent component 120, and the light of each color is realized after the light combining, so that a color wheel motor is not needed, and the size of the light emitting device 100 can be reduced.

And because the light that light-emitting device 100 finally emergent in this embodiment is realized by the light of laser and yellow fluorescence combination, for three-colour pure laser light source, light-emitting device 100 of this application can effectively weaken the speckle. Therefore, the present application can achieve both downsizing of the light emitting device 100 and a light emitting effect.

As shown in fig. 1, the light combining assembly 130 may include an area film 131 and a first light uniformizing member 132, and the first light uniformizing member 132 is disposed on an exit light path of the area film 131.

The area film 131 is disposed on the light emitting paths of the RGB laser 110 and the phosphor element 120, and is used for emitting the incident laser light and yellow phosphor light to the first light uniformizer 132.

The first light uniformizing member 132 is used for uniformizing the laser light and the yellow fluorescence emitted from the area film 131 so as to combine the laser light and the yellow fluorescence.

In the present embodiment, the area diaphragm 131 may be divided into a first area (not shown) and a second area (not shown). The first region may be used for incidence of laser light, the second region may be used for incidence of yellow fluorescence, the area of the second region may be larger than that of the first region, the first region may guide the incident laser light to the first light uniformizing member 132, the second region may guide the incident yellow fluorescence light to the first light uniformizing member 132, and the first light uniformizing member 132 may combine the laser light and the fluorescence light emitted by the region diaphragm 131 to realize light of various colors.

In this way, in this embodiment, the yellow fluorescence emitted from the second area in the larger area range and the laser emitted from the first area in the smaller area range are combined, so that the speckle can be effectively reduced.

As shown in FIG. 1, in one embodiment, the phosphor assembly 120 includes a yellow LED121 a. The RGB laser 110 may time-share or turn off the red, green, and blue lasers.

For example, the laser output by the RGB laser 110 is red laser, and the light combining component 130 combines the red laser with the yellow fluorescent light of the yellow LED121a to output red light; or, the laser output by the RGB laser 110 is green laser, and the light combining component 130 combines the green laser with the yellow fluorescent light of the yellow LED121a to output green light; alternatively, the laser output by the RGB laser 110 is blue laser, the yellow LED121a is turned off, and the light combining component 130 outputs blue light.

In this embodiment, the yellow light LED121a outputs yellow fluorescent light, and compared with a conventional laser fluorescent light source that a blue laser is used to excite a fluorescent color wheel, the fluorescent color wheel needs to be driven by a color wheel motor, so that the overall size of the laser fluorescent light source is relatively large. The light emitting device 100 of the present embodiment does not need a color wheel motor for driving, and can significantly reduce the size.

Alternatively, referring to fig. 2, fig. 2 is a schematic structural diagram of an area film of an embodiment of a light emitting device of the present application.

As shown in fig. 2, a first area included in the area membrane 131 may be denoted as 1311, and a second area included in the area membrane 131 may be denoted as 1312. The second region 1312 may surround the periphery of the first region 1311.

The first region 1311 may be used to transmit laser light, and the second region 1312 may be used to reflect yellow fluorescence to emit the laser light and the yellow fluorescence incident to the area film 131 to the first light uniformizer 132. In one embodiment, an anti-reflection film may be disposed in the first region 1311 to transmit laser light, and a yellow reflection film may be disposed in the second region 1312 to reflect yellow fluorescence. The size of the first region 1311 may correspond to the size of a spot generated on the area film 131 after the laser light output from the RGB laser 110 reaches the area film 131. Thus, the loss of yellow fluorescence due to the transmission of yellow fluorescence through the antireflection film can be minimized. It will be appreciated that in other embodiments (not shown), the first region may be arranged to reflect laser light and the second region may be arranged to transmit yellow fluorescence light to exit the incident laser light and yellow fluorescence light to the first light distribution member.

Further, as shown in fig. 1, the light emitting device 100 may include a diffusion sheet 140, a second light uniformizing element 150, a first collecting lens group 160, and a third light uniformizing element 170. The diffusion sheet 140 may diffuse the incident laser light, and the second light uniformizer 150 may uniformize the yellow fluorescence emitted from the diffusion sheet 140. The first collecting lens group 160 can collimate the yellow fluorescent light output by the fluorescent assembly 120, and the third light homogenizing element 170 can homogenize the yellow fluorescent light collimated by the first collecting lens group 160.

The laser light of the RGB laser 110 may be incident on the area film 131 through the diffusion sheet 140 and the second light uniformizing element 150, and the yellow fluorescence of the fluorescence assembly 120 may be incident on the area film 131 through the first collecting lens group 160 and the third light uniformizing element 170.

In this embodiment, the scattering sheet 140 is disposed to scatter the laser light output by the RGB laser 110, and the second light homogenizing element 150 can homogenize the laser light before the laser light is incident on the light combining component 130; the third light homogenizing element 170 can homogenize the yellow fluorescent light before the yellow fluorescent light is incident to the light combining assembly 130, and finally the homogenized laser light and the yellow fluorescent light are combined through the light combining assembly 130 to realize light of various colors. Therefore, the laser and the yellow fluorescence are uniformly mixed after light combination, and speckle reduction can be realized on the basis of remarkably improving the brightness of light with various colors after light combination.

Alternatively, in this first embodiment, the first collection lens group 160 may include a first collection lens 10 and a second collection lens 20, wherein the second collection lens 20 may be disposed on the exit light path of the first collection lens 10; to collimate the incident light by the first collecting lens 10 and the second collecting lens 20. In one embodiment, the incident surface of the first collecting lens 10 may be formed with a concave curved surface, the exit surface may be formed with a convex curved surface, the incident surface of the second collecting lens 20 may be a flat surface, and the exit surface may be formed with a convex curved surface. Of course, the shape and structure of the first collecting lens 10 and the second collecting lens 20 are not limited thereto. In other embodiments, the first collection lens 10 and the second collection lens 20 may have other shapes and configurations. Although the case where the lenses included in the first collecting lens group 160 include two collecting lenses in total of the first collecting lens 10 and the second collecting lens 20 is exemplified here, in other embodiments (not shown), the first collecting lens group may include only one collecting lens or two or more collecting lenses.

Alternatively, in the first embodiment, the fluorescent member 120, the first collecting lens group 160, the third light homogenizing element 170, and the area diaphragm 131 may be sequentially arranged in a line along the first direction, and the RGB laser 110, the scattering sheet 140, the second light homogenizing element 150, the area diaphragm 131, and the first light homogenizing element 132 may be sequentially arranged in a line along the second direction. Wherein the first direction and the second direction may be perpendicular to each other.

Alternatively, the first homogenizing member 132, the second homogenizing member 150, and the third homogenizing member 170 may be compound eyes.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a light emitting device according to a second embodiment of the present application.

The light emitting device 100 of the second embodiment of the present application is modified based on the light emitting device 100 of the first embodiment, and is different from the light emitting device 100 of the first embodiment in that the fluorescent component 120 in the light emitting device 100 of the second embodiment has a different composition from the fluorescent component 120 of the light emitting device 100 of the first embodiment, the fluorescent component 120 in the light emitting device 100 of the second embodiment includes a blue LED121b, a second lens component 122b and a yellow phosphor sheet 123b, and blue light of the blue LED121b is incident on the yellow phosphor sheet through the second lens component 122b to output yellow phosphor.

The RGB laser 110 may time-share or turn off the red, green, and blue lasers.

For example, the laser output by the RGB laser 110 is red laser, and the light combining component 130 combines the red laser and the yellow phosphor powder sheet 123b to output yellow phosphor light, so as to output red light. Or, the laser output by the RGB laser 110 is a green laser, and the light combining component 130 combines the green laser with the yellow fluorescent light output by the yellow fluorescent powder sheet 123b to output a green light; alternatively, the laser output by the RGB laser 110 is blue laser, the blue LED121b is turned off, and the light combining component 130 outputs blue light.

As shown in fig. 3, the second lens assembly 122b may include a second collecting lens group 1221b and a converging lens 1222b, wherein the second collecting lens group 1221b is configured to collimate the incident blue light, and the converging lens 1222b is configured to converge the collimated blue light to the yellow phosphor patch 123b, so as to excite the yellow phosphor patch 123b to output yellow phosphor.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a light emitting device according to a third embodiment of the present application.

As shown in fig. 4, the light emitting device 200 includes an RGB laser 210, a fluorescent member 220, a blue LED230, and a light combining member 240.

The RGB laser 210 is used to output laser light, which includes red laser light, green laser light, and/or blue laser light. In one embodiment, the RGB laser 210 may output red laser light, green laser light, and blue laser light in a time-sharing manner. In another embodiment, the RGB laser 210 may output at least two of red laser light, green laser light, and blue laser light at the same time.

The following description will be given taking an example in which the RGB laser 210 simultaneously outputs blue laser light and green laser light, or simultaneously outputs blue laser light and red laser light. The red laser or the green laser outputted from the RGB laser 210 may be incident on the light combining component 240, and the blue laser outputted from the RGB laser 210 may be incident on the fluorescent component 220.

In the present embodiment, the fluorescent member 220 may be a yellow phosphor sheet 221. The blue laser light output by the RGB laser 210 impinges on the yellow phosphor patch 221 so that the yellow phosphor patch 221 outputs yellow phosphor light. The yellow fluorescence output from the yellow phosphor sheet 221 can be incident on the light combining component 240.

The blue LED230 is configured to output blue light, and the blue light output by the blue LED230 can be incident to the light combining component 240.

The light combining component 240 is disposed on the light emitting paths of the RGB laser 210, the fluorescent component 220, and the blue LED230, and is configured to combine the red laser light or the green laser light with the yellow fluorescent light.

In the present application, the light combining component 240 is disposed on the light emitting paths of the RGB laser 210 and the yellow phosphor sheet 221, so that the light combining component 240 can combine the laser light emitted from the RGB laser 210 and the yellow phosphor light emitted from the yellow phosphor sheet 221, and the light of each color is realized after the light combining.

Because the light that light-emitting device 200 finally emergent is realized by the combination of laser and yellow fluorescence in this embodiment, relative to the pure laser light source of three-colour, light-emitting device 200 of this application can effectively weaken the speckle.

As shown in fig. 4, the light emitting device 200 includes a guiding assembly 250, wherein the guiding assembly 250 is disposed on the emitting light path of the RGB laser 210 and the blue LED230, and is used for guiding the blue light output by the blue LED230, the green laser output by the RGB laser 210, or the red laser output by the RGB laser to the light combining assembly 240, and guiding the blue laser output by the RGB laser 210 to the yellow phosphor sheet 221.

The yellow phosphor sheet 221 is used for outputting yellow fluorescence under excitation of blue laser and making the yellow fluorescence incident to the guide assembly 250; the guiding component 250 is further configured to guide the yellow fluorescence to the light combining component 240 to combine with the green laser or the red laser guided to the light combining component 240.

As shown in fig. 4, the laser output by the RGB laser 210 is blue laser and red laser, the blue LED230 is turned off, so that the yellow phosphor powder sheet 221 outputs yellow phosphor under the excitation of the blue laser, and the light combining component 240 combines the red laser and the yellow phosphor to output red light; or, the laser output by the RGB laser 210 is blue laser and green laser, and the blue LED230 is turned off, so that the yellow phosphor powder sheet 221 outputs yellow phosphor under the excitation of the blue laser, and the light combining component 240 combines the green laser and the yellow phosphor to output green light; alternatively, the RGB laser 210 is turned off, and the blue LED230 outputs blue light, so that the light combining component 240 outputs blue light.

As shown in fig. 4, the guide member 250 includes a first dichroic filter 251, a second dichroic filter 252, and a reflective mirror 253; the light combining component 240 includes an area diaphragm 231 and a first light homogenizing element 232.

The first dichroic filter 251 is disposed on an exit light path of the RGB laser 210, and is configured to emit blue laser light to the second dichroic filter 252 and emit red laser light or green laser light to the reflective mirror 253. For example, the first dichroic plate 251 may be configured to transmit red or green laser light and reflect blue laser light to emit the red or green laser light to the reflective mirror 253 and the blue laser light to the second dichroic plate 252.

The second dichroic filter 252 is configured to emit the blue laser light emitted from the first dichroic filter 251 to the yellow phosphor plate 221, so as to excite the yellow phosphor plate 221 to generate yellow phosphor light, and emit the blue light output from the blue LED230 and the yellow phosphor light to the area diaphragm 231. For example, the second dichroic filter 252 is configured to transmit the blue laser light emitted from the first dichroic filter 251 and the blue light emitted from the blue LED230, and reflect the yellow fluorescent light emitted from the yellow phosphor sheet 221, so as to emit the blue light emitted from the blue LED230 and the yellow fluorescent light to the area diaphragm 231.

The reflective mirror 253 is used to emit the red laser light or the green laser light emitted from the first dichroic filter 251 to the area diaphragm 231.

The area diaphragm 231 is used for emitting the blue light and yellow fluorescence emitted by the second dichroic filter 252 and the green laser or red laser emitted by the reflector to the first light homogenizing element.

The first light uniformizer 232 is used for combining the yellow fluorescence emitted from the area diaphragm 231 with the red laser or the green laser.

The area diaphragm 231 may include a first area (not shown) and a second area (not shown), and the second area may surround the first area. The first region may be used to reflect red laser light or green laser light, and the second region may be used to transmit blue light and yellow fluorescence light, so that the blue light and yellow fluorescence light incident to the area diaphragm 231 and the red laser light or green laser light are emitted to the first light uniformizer 232. For example, a reflective film may be provided in the first region to reflect red laser light or green laser light, and an anti-reflection film may be provided in the second region to transmit blue light and yellow fluorescence. The size of the first region may correspond to the size of a spot generated on the area diaphragm 231 after the laser light output from the RGB laser 210 reaches the area diaphragm 231. Thus, the loss of yellow fluorescence due to reflection from the reflective film can be minimized. It will be appreciated that in other embodiments (not shown), the first region may be configured to transmit laser light and the second region may be configured to reflect yellow and blue light to exit the incident laser light, blue light and yellow light to the first light spreader.

Further, as shown in fig. 4, the light emitting device 200 includes a diffuser plate 260 and a second light homogenizing member 270, and the laser light output by the RGB laser 210 may sequentially exit to the guide assembly 250 through the diffuser plate 260 and the second light homogenizing member 270. For example, the diffuser sheet 260 and the second light homogenizing member 270 may be disposed on an optical path between the RGB laser 210 and the guide assembly 250, wherein the diffuser sheet 260 may be disposed on an optical path between the second light homogenizing member 270 and the RGB laser 210.

As shown in fig. 4, the light emitting device 200 includes a first collecting lens group 280 and a second collecting lens group 290, wherein the first collecting lens group 280 may be disposed between the yellow phosphor sheet 221 and the guide assembly 250, and the second collecting lens group 290 may be disposed between the blue LED230 and the guide assembly 250. The yellow fluorescent light output by the yellow fluorescent powder sheet 221 can be collimated by the first collecting lens group 280 and then enter the guiding assembly 250, and the blue light output by the blue light LED230 can be collimated by the second collecting lens group 290 and then enter the guiding assembly 250.

As shown in fig. 4, further, the guide assembly 250 may include a first relay lens 254, a second relay lens 255, a third relay lens 256, and a fourth relay lens 257. Among them, the first relay lens 254 may be disposed between the first dichroic filter 251 and the second dichroic filter 252, the second relay lens 255 may be disposed between the first dichroic filter 251 and the reflective mirror 253, the third relay lens 256 may be disposed between the second dichroic filter 252 and the area diaphragm 231, and the fourth relay lens 257 may be disposed between the reflective mirror 253 and the area diaphragm 231.

Alternatively, in order to reduce the area of the light emitting device 200, the yellow phosphor sheet 221, the first collecting lens 280, the second dichroic sheet 252, the first relay lens 254, and the first dichroic sheet 251 may be sequentially arranged in a line along the first direction; the area diaphragm 231, the fourth relay lens 257, and the reflective mirror 253 may be sequentially arranged in a line along the first direction; the RGB laser 210, the diffuser plate 260, the second light uniformizing element 270, the first dichroic plate 251, the second relay lens 255, and the reflective mirror 253 may be sequentially arranged in a line along the second direction; the blue LED230, the second collection lens group 290, the second dichroic sheet 252, the third relay lens 256, the area diaphragm 231, and the first light uniforming member 232 may be sequentially arranged in a line along the second direction. And the first direction may be perpendicular to the second direction.

Alternatively, the first and second smoothing

members

232 and 270 may be compound eyes.

Referring to fig. 5, fig. 5 is a schematic structural diagram of the DLP module of the present application.

As shown in fig. 5, the DLP module 30 includes a light emitting device 31, a DMD chip 32, and a DLP controller 33.

The light-emitting device 31 is the light-emitting device of each of the light-emitting device embodiments described above; the DMD chip 32 may be disposed on an outgoing light path of the light emitting device 31; so that the light emitting device 31 can provide the DMD chip 32 with the illumination light beam L1, and the DLP controller 33 can be respectively connected to the light emitting device 31 and the DMD chip 32 for controlling the DMD chip 32 to output the image light beam L2.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a projection apparatus of the present application.

As shown in fig. 6, the projection device 1 may be a DLP projector provided with a DLP module 30, a mobile terminal, a computer, or other device provided with a DLP module 30 for projection.

The projection apparatus 1 may include a DLP module 30 and a projection lens 40, wherein the DLP module 30 may be the DLP module 30 in the above DLP module embodiment. And will not be described in detail herein. The projection lens 40 may be disposed on an exit path of the image light beam L2 output by the DLP module 30, and is configured to project the image light beam L2 onto a corresponding projection surface (not shown).

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings are included in the scope of the present disclosure.

Claims

1. A light-emitting device, comprising:

a fluorescent component for outputting yellow fluorescence;

and the light combination component is arranged on the light emitting paths of the RGB laser and the fluorescent component and is used for combining the laser and the yellow fluorescent light.

2. The lighting device according to claim 1,

the light combination assembly comprises an area diaphragm and a first light homogenizing piece, and the first light homogenizing piece is arranged on an emergent light path of the area diaphragm;

the regional membrane is arranged on the light emitting paths of the RGB laser and the fluorescent component and is used for emitting the incident laser and the yellow fluorescent light to the first light homogenizing piece;

the first light homogenizing member is used for homogenizing the laser light and the yellow fluorescence emitted by the area membrane so as to enable the laser light and the yellow fluorescence to be combined.

3. The lighting apparatus according to claim 2, wherein the fluorescent component comprises a yellow LED, the yellow LED is configured to output the yellow fluorescent light, the laser light output by the RGB laser is the red laser light, and the light combining component combines the red laser light and the yellow fluorescent light of the yellow LED to output a red light;

or the laser output by the RGB laser is the green laser, and the light combining component combines the green laser and the yellow fluorescent light of the yellow LED to output green light;

or, the laser output by the RGB laser is the blue laser, the yellow LED is turned off, and the light combining component outputs blue light.

4. The light-emitting device according to claim 2, wherein the fluorescent component comprises a blue LED, a second lens component and a yellow phosphor sheet, and the blue light of the blue LED is irradiated onto the yellow phosphor sheet through the second lens component to output the yellow phosphor;

the laser output by the RGB laser is the red laser, and the light combination component combines the red laser and the yellow fluorescent powder sheet to output yellow fluorescent light so as to output red light;

or the laser output by the RGB laser is the green laser, and the light combining component combines the green laser and the yellow fluorescent light output by the yellow fluorescent powder sheet to output green light;

or the laser output by the RGB laser is the blue laser, the blue LED is closed, and the light combination component outputs blue light.

5. The lighting device according to any one of claims 2 to 4,

the area diaphragm comprises a first area and a second area, and the second area is arranged around the periphery of the first area;

the first area is used for transmitting the laser, and the second area is used for reflecting the yellow fluorescence so as to emit the incident laser and the yellow fluorescence to the first light homogenizing piece;

or, the first region is used for reflecting the laser, and the second region is used for transmitting the yellow fluorescence so as to emit the incident laser and the yellow fluorescence to the first light homogenizing piece.

6. The light-emitting device according to any one of claims 2 to 4, wherein the light-emitting device comprises a scattering sheet, a second light homogenizing member, a first collecting lens group and a third light homogenizing member, the laser light of the RGB laser is incident to the area membrane through the scattering sheet and the second light homogenizing member in sequence, and the yellow fluorescence light of the fluorescence component is incident to the area membrane through the first collecting lens group and the third light homogenizing member in sequence.

7. The lighting device according to claim 1,

the fluorescent component comprises a yellow fluorescent powder sheet, the light-emitting device comprises a blue light LED and a guide component, the blue light LED is used for outputting blue light, the guide component is arranged on the light emitting paths of the RGB laser and the blue light LED and is used for guiding the blue light output by the blue light LED, the green laser output by the RGB laser or the red laser output by the RGB laser to the light combination component and guiding the blue laser output by the RGB laser to the yellow fluorescent powder sheet;

the yellow fluorescent powder sheet is used for outputting the yellow fluorescent light under the excitation of the blue laser and enabling the yellow fluorescent light to be incident to the guide assembly;

wherein the guiding component is further configured to guide the yellow fluorescence to the light combining component to be combined with the green laser light or the red laser light guided to the light combining component.

8. The lighting device according to claim 7,

the laser output by the RGB laser is the blue laser and the red laser, the blue LED is turned off, so that the yellow fluorescent powder sheet outputs the yellow fluorescent light under the excitation of the blue laser, and the light combining component combines the red laser and the yellow fluorescent light to output red light;

or the laser output by the RGB laser is the blue laser and the green laser, the blue LED is turned off, so that the yellow phosphor sheet outputs the yellow phosphor under excitation of the blue laser, and the light combining component combines the green laser and the yellow phosphor to output green light;

or, the RGB laser is closed, the blue light LED outputs the blue light, and the light combination component outputs the blue light.

9. The DLP module, wherein the DLP module comprises:

a light emitting device according to any one of claims 1 to 8;

and the DLP controller is respectively connected with the light-emitting device and the DMD chip and is used for controlling the DMD chip to output the image light beam.

10. A projection device, characterized in that the projection device comprises:

a DLP module, said DLP module being the DLP module of claim 9 above;

and the projection lens is arranged on an emergent light path of the image light beam output by the DMD chip and is used for projecting the image light beam to an external projection surface.