Light source device and optical system

Abstract

A light source device (100) and an optical system (200). The light source device (100) comprises a laser module (10), a fluorescent module (20), a guide module (30), a light combining module (40) and a control module (50). Each laser unit (120) comprised in the laser module (10) is used for generating one red laser, one green laser and one blue laser; the guide module (30) is arranged on an optical path where the N blue lasers, N green lasers and N red lasers generated by N laser units (120) are located; the fluorescent module (20) is arranged on an optical path where N-M second blue lasers are located; the light combining module (40) is arranged on an optical path where M first blue lasers, the N green lasers, the N red lasers and specified fluorescence are located, and is used for generating specified combined light; the control module (50) is electrically connected to the laser module (10), and is used for regulating operating parameters of the N laser units (120) so as to regulate a parameter of the specified combined light. On the basis of an actual application requirement of the optical system (200) provided with the light source device (100), the control module (50) can adjust the color of the specified combined light, improving the flexibility of color adjustment.

Description

Light source device and optical system Technical Field

[0001] This application relates to the field of optical imaging technology, and more specifically, to a light source device and an optical system. Background Technology

[0002] As living standards continue to improve, people's demand for entertainment lighting is growing. A wide variety of lighting fixtures have emerged on the market, playing an important role not only in outdoor lighting but also in stage lighting.

[0003] The color performance of existing lighting fixtures mainly depends on the inherent color of their built-in light source, which limits the flexibility of color adjustment. Summary of the Invention

[0004] This application provides a light source device and an optical system.

[0005] According to a first aspect of this application, embodiments of this application provide a light source device, which includes a laser module, a fluorescence module, a guiding module, a combining module, and a control module. The laser module includes N laser units, each laser unit generating one red laser, one green laser, and one blue laser; wherein the N blue lasers generated by the N laser units include M first blue lasers and NM second blue lasers, where N and M are both greater than 1, and N is greater than M. The guiding module is disposed on the optical paths of the N blue lasers, N green lasers, and N red lasers generated by the N laser units, and is used to guide the M first blue lasers, N green lasers, and N red lasers to the combining module, and also to guide the NM second blue lasers to the fluorescence module. The fluorescence module is disposed on the optical path of the NM second blue lasers, and is used to generate specified fluorescence under the excitation of the NM second blue lasers. The light combining module is positioned on the optical paths of the M-channel first blue laser, N-channel green laser, N-channel red laser, and the designated fluorescence. It is used to combine the light incident on the light combining module to produce the designated combined light. The control module is electrically connected to the laser module and is used to adjust the operating parameters of the N laser units to adjust the light parameters of the designated combined light; the light parameters include at least one of color coordinates and brightness.

[0006] According to a second aspect of this application, embodiments of this application also provide an optical system, which includes the above-described light source device and an imaging module. The light source device is used to generate a specified combined light, and the imaging module is disposed on the optical path where the specified combined light is located.

[0007] This application provides a light source device and an optical system. The light combining module in the light source device is used to combine M-channel first blue lasers, N-channel green lasers, N-channel red lasers, and a specified fluorescence to generate a specified combined light. Therefore, the specified combined light in this embodiment is light composed of a mixture of lasers and fluorescence. The lasers can improve the brightness of the specified combined light, and the fluorescence can improve the color rendering index of the specified combined light, thereby enriching the application scenarios of the light source device.

[0008] Furthermore, the control module is electrically connected to the laser module and is used to adjust the operating parameters of the N laser units. For example, the control module can selectively activate some lasers to adjust the proportion of different colors (different spectra) of light in a specified combined light, thereby adjusting the color coordinates of the specified combined light. Therefore, the control module in this embodiment can adjust the color of a specified combined light according to the actual application requirements of the optical system equipped with a light source device, improving the flexibility of color adjustment.

[0009] Of course, the control module can also adjust the brightness of a specified combined light. For example, when the light source device is working in a scenario requiring high brightness, the control module can increase the number of lasers turned on to improve the overall brightness of the specified combined light, thus increasing the flexibility of brightness adjustment.

[0010] Since a portion of the blue laser is used to excite a specific fluorescence and another portion is used to directly participate in light combination, the light source device in this embodiment can achieve more flexible light display. For example, the light source device can achieve a higher brightness lighting mode or a higher color rendering index projection mode, thus enriching the application scenarios of the light source device.

[0011] Furthermore, the blue laser used to excite the specified fluorescence is a portion of the N blue laser beams generated by the N laser units (i.e., NM second blue laser beams). Therefore, no additional light source to generate excitation light is needed in the light source device, and the optical path design can be simplified. Specifically, there is no need to set up time-division switching components in the optical path, nor is there a need to set up complex optical path detours, which can save layout space and hardware costs of the light source device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 is a schematic diagram of the structure of the optical system provided in an embodiment of this application.

[0014] Figure 2 is a schematic diagram of the light source device in the optical system shown in Figure 1.

[0015] Figure 3 is a schematic diagram of the laser unit in the light source device shown in Figure 2.

[0016] Figure 4 is a schematic diagram of the structure of the laser module and the guide module in the light source device shown in Figure 2.

[0017] Figure 5 is another structural schematic diagram of the laser module and the guide module in the light source device shown in Figure 2.

[0018] Figure 6 is a schematic diagram of another structure of the light source device in the optical system shown in Figure 1.

[0019] Figure 7 is a schematic diagram of the optical combining element in the optical system shown in Figure 6.

[0020] Figure 8 is a cross-sectional structural diagram of the light-combining component shown in Figure 7.

[0021] Figure 9 is another structural schematic diagram of the light source device in the optical system shown in Figure 1.

[0022] Figure 10 is a schematic diagram of another structure of the optical system provided in an embodiment of this application.

[0023] Figure 11 is a first working parameter mapping table provided in an embodiment of this application.

[0024] Figure 12 is a second working parameter mapping table provided in an embodiment of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0026] Referring to Figure 1, this application provides a light source device 100 and an optical system 200 configured with the light source device 100. The optical system 200 can be applied to lighting fixtures (e.g., stage lights, floodlights) to enrich the application scenarios of lighting fixtures. Specifically, the optical system 200 may include the light source device 100 and an imaging module 210. The light source device 100 is used to generate a specified combined light beam D, and the imaging module 210 is disposed in the optical path where the specified combined light beam D is located. It is used to image the specified combined light beam D, and the imaged specified combined light beam D is suitable for emission to the outside world.

[0027] Imaging module 210 may include imaging lens group 2120 and imaging component 2140, wherein imaging lens group 2120 and imaging component 2140 are sequentially arranged on the optical path where the specified combined beam D is located, and imaging lens group 2120 is used to converge the specified combined beam D to image onto imaging component 2140. Specifically, imaging lens group 2120 may include one or more imaging lenses. For example, in FIG1, the number of imaging lenses is four. Imaging lenses may be positive lenses, negative lenses, spherical lenses, aspherical lenses, etc.

[0028] Imaging component 2140 is used to image a specified combined light beam D. Specifically, imaging component 2140 can be a Digital Light Processing (DLP) system, which can modulate the specified combined light beam D to generate light carrying a specified pattern. Imaging component 2140 can also be an imaging lens; this embodiment does not limit the implementation of imaging lens group 2120 and imaging component 2140.

[0029] In some possible embodiments, the imaging module 210 may further include a pattern disk 2160, which is disposed between the imaging lens group 2120 and the imaging component 2140 and located on the optical path of the specified combined light D. The pattern disk 2160 is used to adjust the shape of the light spot of the specified combined light D. For example, the light spot of the specified combined light D can be adjusted to a circular light spot, a triangular light spot, a pentagonal light spot, etc., to enrich the application scenarios of the lighting fixture.

[0030] Referring to Figures 2 and 3, the light source device 100 may include a laser module 10, a fluorescence module 20, a guiding module 30, a light combining module 40, and a control module 50. The laser module 10 may include N laser units 120, each laser unit 120 generating one red laser R, one green laser G, and one blue laser B. The N blue lasers B generated by the N laser units 120 include M first blue lasers B1 and NM second blue lasers B2, where N and M are both greater than 1, and N is greater than M. Specifically, N can be a natural number greater than or equal to 2; for example, N can be 2, 4, 6, 8, etc. For example, when N equals eight and M equals six, the eight blue lasers B include six first blue lasers B1 and two second blue lasers B2.

[0031] It should be noted that "first blue laser" and "second blue laser" are merely names used for the convenience of describing the optical path below. First blue laser B1 and second blue laser B2 are essentially both blue lasers and are indistinguishable from each other. Specifically, a portion of the N-path blue lasers B is referred to as first blue laser B1, and the other portion is referred to as second blue laser B2.

[0032] A guiding module 30 is positioned on the optical paths of the N blue lasers B, N green lasers G, and N red lasers R generated by the N laser units 120. It guides M first blue lasers B1, N green lasers G, and N red lasers R to the combining module 40, and also guides NM second blue lasers B2 to the fluorescence module 20. In other words, the NM second blue lasers B2 in this embodiment serve as the excitation light for the fluorescence module 20. The fluorescence module 20 is positioned on the optical path of the NM second blue lasers B2 and is used to generate a specified fluorescence F1 under the excitation of the NM second blue lasers B2. Therefore, no additional light source for generating excitation light is needed in the light source device 100, saving layout space and hardware costs.

[0033] The light combining module 40 is positioned on the optical paths of the M-path first blue laser B1, the N-path green laser G, the N-path red laser R, and the designated fluorescence F1. It is used to combine the light incident on the light combining module 40 to generate the designated combined light D. Therefore, in this embodiment, the designated combined light D is a mixture of laser and fluorescence. The laser can increase the brightness of the designated combined light D, and the fluorescence can increase the color rendering index of the designated combined light D, thus enriching the application scenarios of the light source device 100.

[0034] The control module 50 is electrically connected to the laser module 10 and is used to adjust the operating parameters of the N laser units 120 to adjust the light parameters of a specified combined beam D. The light parameters include at least one of chromaticity and brightness. For example, the control module 50 can selectively activate some lasers to adjust the proportion of different colors (different spectra) in the specified combined beam D, thereby adjusting the chromaticity of the specified combined beam D. For example, if the specified combined beam D is reddish, the control module 50 can activate all red lasers R and deactivate all or some of the M first blue lasers B1 and N green lasers G to increase the proportion of red light in the specified combined beam D.

[0035] Therefore, in this embodiment, the control module 50 can adjust the color of the specified combined light D according to the actual application requirements of the optical system 200 equipped with the light source device 100, thereby improving the flexibility of color adjustment. Of course, the control module 50 can also adjust the brightness of the specified combined light D. For example, when the light source device 100 is operating in a scenario requiring high brightness, the control module 50 can increase the number of lasers activated to improve the overall brightness of the specified combined light D, thus improving the flexibility of brightness adjustment.

[0036] The specific implementation of the light source device 100 is described below.

[0037] Referring to Figure 3, each laser unit 120 may include a blue laser generator 1210, a green laser generator 1230, and a red laser generator 1250. The blue laser generator 1210 is used to generate blue laser B; the green laser generator 1230 is used to generate green laser G; and the red laser generator 1250 is used to generate red laser R. The blue laser generator 1210, green laser generator 1230, and red laser generator 1250 can be integrated on a substrate to improve the assembly convenience of a single laser unit 120.

[0038] Specifically, the number of blue laser generator 1210, green laser generator 1230, and red laser generator 1250 can each be one or more. Researchers can configure these according to the actual needs of the light source device 100; this embodiment does not impose a limitation. It should be noted that, taking the red laser generator 1250 as an example, when there are multiple red laser generators 1250, the mixed red light from the multiple red laser beams generated by the multiple red laser generators 1250 is considered as one red laser beam R generated by the laser unit 120.

[0039] In the embodiment shown in Figure 3, there is one blue laser generator 1210 and one green laser generator 1230, and two red laser generators 1250. The blue laser generator 1210 and the green laser generator 1230 are spaced apart in the first direction W to form a first laser array, and the two red laser generators 1250 are spaced apart in the first direction W to form a second laser array. The first laser array and the second laser array are spaced apart in the second direction H. The first direction W and the second direction H intersect. For example, the first direction W and the second direction H can be perpendicular. Of course, researchers can also use other arrangements, and this embodiment does not impose specific limitations.

[0040] Referring to Figure 4, the N laser units 120 may include a plurality of first laser units 140 arranged sequentially in a specified direction X. Here, "a plurality of first laser units 140" can refer to all or some of the N laser units 120. Specifically, the plurality of first laser units 140 are arranged on the same side of the light combining module 40, and the specified direction X is the direction from the light combining module 40 to the first laser units 140. In some possible embodiments, the specified direction X is parallel to the second direction H.

[0041] The plurality of first laser units 140 may include a first target laser unit 1410, which is the first laser unit 140 that is furthest from the beam combining module 40 among the plurality of first laser units 140. The blue laser B generated by the first target laser unit 1410 is a second blue laser B2. Because the first target laser unit 1410 is located far from the beam combining module 40, the second blue laser B2 generated by the first target laser unit 1410 can be guided to the fluorescence module 20 more smoothly, so as to facilitate the optical path design of the guiding module 30. Specifically, the number of first target laser units 1410 can be one or more. For example, in Figure 4, the number of first target laser units 1410 is one.

[0042] In the embodiment shown in Figure 4, the guiding module 30 may include a first guide 320 and a first reflector 340. The first guide 320 is disposed in the optical path of the green laser G and the second blue laser B2 generated by the first target laser unit 1410, and is used to transmit the green laser G to the first reflector 340 and reflect the second blue laser B2. Specifically, the first guide 320 may be a blue-reflecting and green-transmitting beam combiner.

[0043] The first reflector 340 is disposed in the optical path of the green laser G transmitted through the first guide 320 and the red laser R generated by the first target laser unit 1410, and is used to reflect the green laser G and the red laser R to the light combining module 40. The second blue laser B2, reflected by the first guide 320, propagates away from the light combining module 40, so that the second blue laser B2 can be guided more smoothly to the fluorescence module 20; the green laser G and the red laser R, reflected by the first reflector 340, propagate towards the light combining module 40, so that the green laser G and the red laser R can participate in light combining smoothly. Specifically, the first reflector 340 can be a total reflection mirror.

[0044] It is easy to understand here that the number of the first guide member 320 and the first reflector 340 is the same as the number of the first target laser unit 1410. For example, when there are two first target laser units 1410, there are also two first guide members 320 and two first reflectors 340, which are arranged in a one-to-one correspondence with the first target laser unit 1410.

[0045] In this embodiment, the plurality of first laser units 140 may further include a second target laser unit 1430, wherein the blue laser B generated by the second target laser unit 1430 is a first blue laser B1. Here, "second target laser unit 1430" can be understood as any of the first laser units 140 other than the first target laser unit 1410. The number of second target laser units 1430 can be one or more. For example, if there are two first laser units 140, the number of first target laser units 1410 and second target laser units 1430 can each be one. Alternatively, if there are four first laser units 140, the number of first target laser units 1410 and second target laser units 1430 can each be two; or, the number of first target laser units 1410 can be one, and the number of second target laser units 1430 can be three.

[0046] It should be noted that "first laser unit", "first target laser unit" and "second target laser unit" are all names used for the convenience of describing the optical path, and all three are essentially laser unit 120.

[0047] In the embodiment shown in Figure 4, the guiding module 30 may further include a second reflector 360, which is disposed in the optical path of the green laser G, red laser R, and first blue laser B1 generated by the second target laser unit 1430. The second reflector 360 is used to reflect the green laser G, red laser R, and first blue laser B1 to the light combining module 40. Specifically, the second reflector 360 may be a total reflection mirror.

[0048] It is easy to understand here that the number of second reflectors 360 is the same as the number of second target laser units 1430. For example, if there are three second target laser units 1430, the number of second reflectors 360 is also three, and they are arranged in a one-to-one correspondence with the second target laser units 1430. Furthermore, the first reflectors 340 and the second reflectors 360 are staggered in the target direction Y to ensure that the laser light reflected by the reflectors can smoothly enter the light combining module 40. Here, "target direction Y" can be the emission direction of the laser light at the first laser unit 140.

[0049] In some possible embodiments, N is an even number greater than or equal to 4, and the number of first laser units 140 is N / 2. For example, N can be equal to 4, 6, 8, etc. Exemplarily, when N equals 8, the number of first laser units 140 is 4. That is, the first laser units 140 are a portion of the N laser units 120.

[0050] Referring to Figure 5, the N laser units 120 may further include N / 2 second laser units 160 arranged sequentially in the specified direction X. That is, in this embodiment, the N laser units 120 are divided into two groups, one group including N / 2 first laser units 140, and the other group including N / 2 second laser units 160. Specifically, the light-emitting surfaces of the N / 2 second laser units 160 are opposite to the light-emitting surfaces of the N / 2 first laser units 140. Here, the "light-emitting surface" can be a plane perpendicular to the target direction Y.

[0051] Therefore, in this embodiment, the N laser units 120 are arranged in a 2*(N / 2) array. By setting the N laser units 120 array in the same spatial area, it is convenient to centrally control and dissipate heat from the N laser units 120, and also makes the overall optical path of the light source device 100 more compact and reasonable.

[0052] Specifically, the N / 2 second laser units 160 may include a third target laser unit 1610. The third target laser unit 1610 is the second laser unit 160 that is furthest from the light combining module 40 among the multiple second laser units 160. The light-emitting surface of the third target laser unit 1610 is opposite to the light-emitting surface of the first target laser unit 1410. The blue laser B generated by the third target laser unit 1610 is the second blue laser B2. Because the third target laser unit 1610 is located far from the light combining module 40, the second blue laser B2 generated by the third target laser unit 1610 can be guided to the fluorescence module 20 more smoothly, which facilitates the optical path design of the guiding module 30. Specifically, the number of third target laser units 1610 can be one or more. For example, in Figure 5, the number of third target laser units 1610 is one.

[0053] In the embodiment shown in Figure 5, the guiding module 30 may further include a second guide 310 and a third reflector 330. The second guide 310 is disposed in the optical path of the green laser G and the second blue laser B2 generated by the third target laser unit 1610, and is used to transmit the green laser G to the third reflector 330 and reflect the second blue laser B2. Specifically, the second guide 310 may be a blue-reflecting and green-transmitting beam combiner.

[0054] The third reflector 330 is disposed in the optical path of the green laser G transmitted through the second guide 310 and the red laser R generated by the third target laser unit 1610, and is used to reflect the green laser G and the red laser R to the beam combining module 40. Specifically, the second blue laser B2 reflected by the second guide 310 propagates away from the beam combining module 40, so that the second blue laser B2 can be guided more smoothly to the fluorescence module 20; the green laser G and the red laser R reflected by the third reflector 330 propagate towards the beam combining module 40, so that the green laser G and the red laser R can participate in beam combining smoothly. Specifically, the third reflector 330 can be a total reflection mirror.

[0055] It is easy to understand here that the number of the second guide 310 and the third reflector 330 is the same as the number of the third target laser unit 1610. For example, when there are two third target laser units 1610, there are also two second guides 310 and two third reflectors 330, which are arranged in a one-to-one correspondence with the third target laser unit 1610.

[0056] In this embodiment, the plurality of second laser units 160 may further include a fourth target laser unit 1630, wherein the blue laser B generated by the fourth target laser unit 1630 is the first blue laser B1. Here, "fourth target laser unit 1630" can be understood as any of the second laser units 160 other than the third target laser unit 1610. The number of fourth target laser units 1630 can be one or more. For example, if there are two second laser units 160, the number of third target laser units 1610 and fourth target laser units 1630 can each be one. Alternatively, if there are four second laser units 160, the number of third target laser units 1610 and fourth target laser units 1630 can each be two; or, the number of third target laser units 1610 can be one, and the number of fourth target laser units 1630 can be three.

[0057] It should be noted that the names "second laser unit", "third target laser unit" and "fourth target laser unit" are all names given for the convenience of describing the optical path, and all three are essentially laser unit 120.

[0058] In the embodiment shown in Figure 5, the guiding module 30 may further include a fourth reflector 350, which is disposed in the optical path of the green laser G, red laser R, and first blue laser B1 generated by the fourth target laser unit 1630. The fourth reflector 350 is used to reflect the green laser G, red laser R, and first blue laser B1 to the light combining module 40. Specifically, the fourth reflector 350 may be a total reflection mirror.

[0059] It is easy to understand here that the number of fourth reflectors 350 is the same as the number of fourth target laser units 1630. For example, if there are three fourth target laser units 1630, the number of fourth reflectors 350 is also three, and they are arranged in a one-to-one correspondence with the fourth target laser units 1630. In addition, the third reflectors 330 and the fourth reflectors 350 are staggered in the target direction Y to ensure that the laser light reflected by the reflectors can be smoothly incident on the beam combining module 40.

[0060] In some possible embodiments, the guiding module 30 may further include a plurality of fifth reflectors 370. A portion of the fifth reflectors 370 are disposed in the optical path of the second blue laser B2 reflected by the first guide 320, and another portion of the fifth reflectors 370 are disposed in the optical path of the second blue laser B2 reflected by the second guide 310. The plurality of fifth reflectors 370 are used to reflect the NM-path second blue laser B2 to the fluorescence module 20. Specifically, the plurality of fifth reflectors 370 can reduce the spacing between the NM-path second blue lasers B2, so that the NM-path second blue lasers B2 are emitted from the guiding module 30 in approximately a single beam.

[0061] In some possible embodiments, the laser module 10 and at least part of the guide module 30 can be integrated and packaged in the same device to improve the convenience of installation and debugging of the corresponding optical path of the light source device 100. Here, "at least part of the guide module 30" may include one or more of the first guide 320, the first reflector 340, the second reflector 360, the second guide 310, the third reflector 330, the fourth reflector 350, and the fifth reflector 370.

[0062] Referring to Figure 6, the guiding module 30 may further include multiple reflectors 270. These reflectors 270 are sequentially arranged in the optical path of the NM-path second blue laser B2 emitted from the laser module 10. They are used to reflect the NM-path second blue laser B2 to the fluorescence module 20, ensuring that the second blue laser B2 can successfully excite the designated fluorescence F1. Specifically, the multiple reflectors 270 may be sequentially arranged in the optical path of the second blue laser B2 reflected by the fifth reflector 370.

[0063] It should be noted that the laser module 10 and the guide module 30 in this embodiment are only illustrative. Researchers can flexibly adjust the specific number of laser units 120 and adapt the specific implementation of the guide module 30 according to the actual application requirements of the light source device 100. This embodiment does not limit this.

[0064] Referring to Figures 6 and 7 respectively, the light combining module 40 may include a light combining member 410. The light combining member 410 has adjacent reflective portions 4120 and transmissive portions 4140. The reflective portion 4120 is disposed on the optical path where the designated fluorescence F1 is located, and it is used to reflect the designated fluorescence F1. The transmissive portion 4140 is disposed on the optical path where the M-path first blue laser B1, N-path green laser G, and N-path red laser R are located, and it is used to transmit the M-path first blue laser B1, N-path green laser G, and N-path red laser R. Specifically, the reflective portion 4120 may be located approximately at the center of the light combining member 410, and the transmissive portion 4140 is disposed around the reflective portion 4120.

[0065] Referring to Figure 8, the light combining member 410 may include a body 4102, a reflective layer 4104, and a transmissive layer 4106. The body 4102 is generally sheet-like (e.g., circular or square) and may be made of a transparent substrate (e.g., glass). The surface of the body 4102 is divided into a first region (not shown) and a second region (not shown). The first region is approximately located at the center of the body 4102, and the transmissive layer 4106 covers the first region to form a transmissive portion 4140. For example, the transmissive layer 4106 may be a full-band transmissive film, which may be deposited or attached to the first region.

[0066] The second region surrounds the outer periphery of the first region and is located around the body 4102. The reflective layer 4104 covers the second region to form the reflective portion 4120. For example, the transmissive layer 4106 can be a full-band reflective film, which can be deposited or attached to the second region. Therefore, the light combining member 410 in this embodiment is implemented by a regional coating method.

[0067] In some possible embodiments, the laser generated by the laser unit 120 is in a first polarization state. This "first polarization state" can be either a P-polarization state or an S-polarization state. The transmission layer 4106 is used to transmit light in the first polarization state and reflect light in the second polarization state. Both the second and first polarization states are linearly polarized and orthogonal to each other. For example, if the first polarization state is P-polarized, the second polarization state is S-polarized; if the first polarization state is S-polarized, the second polarization state is P-polarized. Therefore, in this embodiment, the transmission layer 4106 is a polarized transmission layer, and the light combiner 410 uses a regional polarization light combining method for light combining.

[0068] During the reflection of the designated fluorescence F1 by the light combining member 410, a portion of the designated fluorescence F1 is transmitted through the transmission section 4140, resulting in this portion of the designated fluorescence F1 being unable to participate in the light combining, thus causing a certain energy loss. In this embodiment, by setting the transmission layer 4106 as a polarization transmission layer, taking a polarization transmission layer that transmits P and reflects S as an example, the polarization transmission layer reflects the S-light component in a portion of the designated fluorescence F1, thereby reducing the energy loss of the designated fluorescence F1 and improving the overall brightness of the designated combined light D.

[0069] Referring again to Figure 6, the beam combining module 40 may further include a compression lens 430. The compression lens 430 is located between the beam combining member 410 and the guide module 30, and is situated on the optical paths of the M-path first blue laser B1, N-path green laser G, and N-path red laser R emitted from the guide module 30. The compression lens 430 is used to compress the M-path first blue laser B1, N-path green laser G, and N-path red laser R, so that the compressed M-path first blue laser B1, N-path green laser G, and N-path red laser R are incident on the transmission section 4140 of the beam combining member 410.

[0070] It is easy to understand that when the number of laser units 120 is large (e.g., N equals 8), the M-path first blue laser B1, N-path green laser G, and N-path red laser R will form a large light spot. If the overall area of ​​this light spot is larger than the projected area of ​​the transmission part 4140 in the specified direction X, some lasers will not be able to participate in the light combining. Therefore, this embodiment, by setting the compression lens 430, can reduce the overall area of ​​the light spot formed by the M-path first blue laser B1, N-path green laser G, and N-path red laser R, ensuring that the M-path first blue laser B1, N-path green laser G, and N-path red laser R can be smoothly incident on the transmission part 4140 of the light combining member 410, thus ensuring the normal operation of the light source device 100. Specifically, the compression lens 430 can be a composite lens composed of multiple thin lens sheets. This embodiment does not limit the specific implementation of the compression lens 430.

[0071] In some possible embodiments, to improve the compression efficiency of the laser by the compression lens 430, multiple first laser units 140 and multiple second laser units 160 can be symmetrically arranged about the optical axis of the compression lens 430. Some structures in the guide module 30 can also be symmetrically arranged about the optical axis of the compression lens 430. For example, the first guide 320 and the second guide 310 can be symmetrically arranged about the optical axis of the compression lens 430; the first reflector 340 and the third reflector 330 can be symmetrically arranged about the optical axis of the compression lens 430; the second reflector 360 and the fourth reflector 350 can be symmetrically arranged about the optical axis of the compression lens 430, so that the overall structure of the laser module 10 and the guide module 30 is more compact and reasonable.

[0072] In this embodiment, the fluorescence module 20 may include a fluorescent element 230 and a collecting lens 250. The fluorescent element 230 is disposed in the optical path where the second blue laser B2 of the NM path is located, and is used to generate a specified fluorescence F1 under the excitation of the second blue laser B2 of the NM path. Specifically, the specified fluorescence F1 may be red fluorescence, yellow fluorescence, green fluorescence, red-green mixed fluorescence, etc.

[0073] In the embodiment shown in Figure 6, the fluorescent element 230 may include a reflective fluorescent color wheel 2320, which is disposed on the optical path of the second blue laser B2 in the NM path. In some possible embodiments, the reflective fluorescent color wheel 2320 may include multiple fluorescent parts (not shown in the figure), which may include red fluorescent parts, green fluorescent parts, etc., and are arranged around the rotation center of the reflective fluorescent color wheel 2320. During the rotation of the reflective fluorescent color wheel 2320, the multiple fluorescent parts will sequentially circulate on the optical path of the second blue laser B2 to generate fluorescence of different colors under the excitation of the second blue laser B2.

[0074] Referring to Figure 9, the phosphor element 230 may include an LED chip 2340 and a phosphor layer 2360. The LED chip 2340 is used to generate blue light (not shown in the figure). For example, the LED chip 2340 may include multiple blue LED beads arranged in an array. The phosphor layer 2360 covers the light-emitting surface of the LED chip 2340 (not shown in the figure) and is used to generate a target fluorescence F2 under blue light excitation. For example, if the phosphor layer 2360 is a yellow phosphor layer, the target fluorescence F2 is yellow fluorescence. In subsequent processes, the target fluorescence F2 participates in the combined light D of a specified combined light. Specifically, the phosphor layer 2360 may be a fluorescent ceramic plate, which can be attached to the light-emitting surface of the LED chip 2340; the phosphor layer 2360 may also be a colloid mixed with fluorescent particles, which can be coated on the light-emitting surface of the LED chip 2340.

[0075] In this embodiment, the fluorescent layer 2360 is also disposed in the optical path where the second blue laser B2 of the NM path is located, so as to generate a specified fluorescence F1 under the excitation of the second blue laser B2 of the NM path. Therefore, the second blue laser B2 in this embodiment is used to perform secondary excitation of the fluorescent layer 2360 to improve the overall brightness of the specified combined light D.

[0076] A collecting lens 250 is disposed between the fluorescent element 230 and the beam combiner 410, and is located in the optical path of the designated fluorescent element F1. The collecting lens 250 is used to converge the designated fluorescent element F1 so that the converged designated fluorescent element F1 is incident on the reflecting part 4120 of the beam combiner 410. Therefore, in this embodiment, the collecting lens 250 plays the role of converging and collecting the designated fluorescent element F1, which improves the energy utilization efficiency of the designated fluorescent element F1. Specifically, the collecting lens 250 can be a positive lens, and there can be multiple collecting lenses 250. For example, in Figure 6, there are two collecting lenses 250.

[0077] In the embodiment shown in Figure 9, the collecting lens 250 is also located in the optical path where the target fluorescence F2 is located. It is used to converge the target fluorescence F2 so that the converged target fluorescence F2 is incident on the reflective part of the light combining member 410, thereby improving the energy utilization efficiency of the target fluorescence F2.

[0078] In some possible embodiments, the light combining module 40 can also be disposed on the optical path of the NM-path second blue laser L2 emitted via the guiding module 30, and it is also used to guide the NM-path second blue laser L2 to the fluorescence module 20. Therefore, in this embodiment, the light combining module 40 is simultaneously located on the optical paths of the M-path first blue laser B1, the NM-path second blue laser L2, the N-path green laser G, the N-path red laser R, and the designated fluorescence F1, making the overall optical path structure of the light source device 100 more compact and reasonable.

[0079] Specifically, the plurality of reflectors 270 may include a target reflector 2720. The target reflector 2720 and the phosphor 230 are respectively located on opposite sides of the light combining member 410. The transmission portion 4140 of the light combining member 410 is also used to transmit the NM-path second blue laser B2. In this embodiment, by folding the optical path of the NM-path second blue laser B2 using multiple reflectors 270, the overall optical path of the light source device 100 can be made more compact, so as to facilitate the miniaturization design of the light source device 100.

[0080] It is not difficult to see that in the embodiments shown in Figures 6 and 9, the fluorescent color wheel adopts a reflective type, which can improve the energy utilization efficiency of the specified fluorescence F1. Of course, the fluorescent color wheel can also adopt a transmissive type. In this case, multiple reflectors 270 are used to reflect the NM-path second blue laser B2 emitted from the laser module 10 to the side of the fluorescent color wheel away from the light combining member 410. In this case, the light combining module 40 does not need to be set on the optical path where the NM-path second blue laser L2 emitted through the guide module 30 is located, so as to reduce the installation and debugging difficulty of the light combining module 40.

[0081] Referring to Figure 10, the light source device 100 may further include a homogenizing module 60, which is disposed on the optical path where the specified combined beam D is located, and is used to homogenize the specified combined beam D. Since the specified combined beam D contains multiple lasers, and the speckle in the lasers can affect the imaging quality of the specified combined beam D, this embodiment can eliminate the speckle in the specified combined beam D through the homogenizing operation of the homogenizing module 60, thereby improving the imaging quality of the specified combined beam D.

[0082] In some possible embodiments, the light homogenizing module 60 may include a lens assembly 610 and a light homogenizer 630, which are sequentially arranged in the optical path where the specified combined light D is located. The lens assembly 610 is used to converge the specified combined light D and then incident it onto the light homogenizer 630. Specifically, the lens assembly 610 may include one or more converging lenses, which converge the specified combined light D and then incident it onto the incident light area of ​​the light homogenizer 630. In the embodiment shown in FIG10, the number of converging lenses is two, and the converging lenses may be compression lenses, positive lenses, etc. The light homogenizer 630 is used to homogenize the specified combined light D. Specifically, the light homogenizer 630 may be a light homogenizing rod (e.g., a square rod) or a compound eye lens. This embodiment does not limit the specific implementation of the lens assembly 610 and the light homogenizer 630.

[0083] In this embodiment, the control module 50 is electrically connected to the laser module 10 and is used to adjust the operating parameters of the N laser units 120 to adjust the light parameters of the specified combined light D. Specifically, the control module 50 can be a microcontroller unit (MCU) or a control circuit with an integrated control chip, etc.

[0084] Specifically, the control module 50 is configured to: determine the operating parameters of N laser units 120 based on the light parameters of a specified combined beam D and a preset operating parameter mapping table; the operating parameters include at least one of the on / off states of the laser generators included in the N laser units 120 and the switching time ratio (DUTY); the operating parameter mapping table represents the mapping relationship between different light parameters and different operating parameters of the N laser units; and control the N laser units 120 to operate based on the operating parameters of the N laser units 120. The switching time ratio (DUTY) refers to the ratio between the on-time and the period duration when the laser generator is in pulse mode. For example, taking an electrical signal period of 100ms and an on-time of 82ms as an example, the switching time ratio is 82%.

[0085] In one implementation, upon receiving a control command, the control module 50 can determine the ray parameters of a specified beam combiner D based on the control command. The ray parameters of the specified beam combiner D may include at least one of color coordinates and luminous flux. The control module 50 then determines the operating parameters of the N laser units 120 corresponding to the ray parameters of the specified beam combiner D by consulting a preset operating parameter mapping table. Specifically, the preset operating parameter mapping table can be pre-set by the developers and stored in the memory of the control module 50.

[0086] For example, when the control command is a red light illumination command, the control module 50 can determine that the chromatic coordinates of the specified combined light D are (0.65, 0.34). Then, by consulting the operating parameter mapping table, it can determine that the operating parameters of the N laser units 120 are: N red lasers are on, N green lasers and M first blue lasers are off. Finally, based on the operating parameters of the N laser units 120, the control module 50 controls the N laser units 120 to operate so that the chromatic coordinates of the specified combined light D are (0.65, 0.34), that is, the specified combined light D emits red light.

[0087] In some possible embodiments, the ray parameters specifying the combined light D include chromaticity coordinates and luminous flux. The control module 50 is also configured to: when the luminous flux is greater than or equal to a specified luminous flux, determine the operating parameters of the N laser units based on the chromaticity coordinates and a first operating parameter mapping table; the first operating parameter mapping table characterizes the mapping relationship between different chromaticity coordinates and different on / off states of the laser generators included in the N laser units; when the luminous flux is less than the specified luminous flux, determine the operating parameters of the N laser units based on the chromaticity coordinates and a second operating parameter mapping table; the second operating parameter mapping table characterizes the mapping relationship between different chromaticity coordinates, different on / off states of the laser generators included in the N laser units, and different switching time ratios.

[0088] The specified luminous flux is a preset value in the control module 50. When the luminous flux is greater than or equal to the specified luminous flux, it indicates that the brightness of the specified combined light D is high, and the control module 50 can control the N laser units to operate in constant current mode. In this case, the operating parameters of the N laser units include the on / off states of the laser generators included in the N laser units. Specifically, the control module 50 can determine the different on / off states of the laser generators included in the N laser units corresponding to different color coordinates by looking up the first operating parameter mapping table.

[0089] Please refer to Figure 11, which shows a first operating parameter mapping table provided in this embodiment. Specifically, in Figure 11, 1# to 8# represent 8 laser units, 0# represents the fluorescence module, and 0# being in the ON state indicates that the second blue laser used to excite the specified fluorescence is in the on state.

[0090] For example, when the chromatic coordinates of the combined beam D are specified as (0.65, 0.34), the control module 50 can determine through the first operating parameter mapping table that the red lasers corresponding to the eight laser units are all in the on state, and the green lasers and the first blue lasers corresponding to the eight laser units are all in the off state. As another example, when the chromatic coordinates of the combined beam D are specified as (0.167, 0.38), the control module 50 can determine through the first operating parameter mapping table that the green lasers corresponding to the eight laser units are all in the on state, and the first blue lasers corresponding to laser units 1 and 2 are in the on state, while the red lasers corresponding to the eight laser units and the first blue lasers corresponding to some laser units are in the off state.

[0091] In some possible embodiments, when the luminous flux is less than a specified luminous flux, indicating that the brightness of the specified combined light D is low, the control module 50 can use a pulse mode to control the N laser units to operate, thereby reducing the overall power consumption of the laser units. In this case, the operating parameters of the N laser units include the on / off states and switching time ratios (DUTY) of the laser generators included in the N laser units. Specifically, the control module 50 can determine the different on / off states and different switching time ratios of the laser generators included in the N laser units corresponding to different color coordinates by looking up a second operating parameter mapping table.

[0092] Please refer to Figure 12, which shows a second operating parameter mapping table provided in this embodiment. Specifically, in Figure 12, 1# to 8# represent 8 laser units, 0# represents the fluorescence module, and the percentage corresponding to 0# is the switching time percentage of the fluorescence module.

[0093] For example, when the color coordinates of the combined light D are specified as (0.45, 0.2), the control module 50 can determine through the second operating parameter mapping table that the red lasers corresponding to the eight laser units are all in the on state, and the on / off time of the red lasers accounts for 82%. It can also be determined that the first blue lasers corresponding to laser units 1 to 6 are in the on state, and the on / off time of the first blue lasers accounts for 16%. The green lasers corresponding to the eight laser units are all in the on / off state.

[0094] In some other possible embodiments, the ray parameters specifying the combined light D include color coordinates. The control module 50 is also configured to: acquire the operating mode of the light source device, including a projection mode and an illumination mode; the luminous flux of the illumination mode is greater than that of the projection mode. When the operating mode is illumination mode, the operating parameters of the N laser units are determined based on the color coordinates and a first operating parameter mapping table; the first operating parameter mapping table characterizes the mapping relationship between different color coordinates and different on / off states of the laser generators included in the N laser units. When the operating mode is projection mode, the operating parameters of the N laser units are determined based on the color coordinates and a second operating parameter mapping table; the second operating parameter mapping table characterizes the mapping relationship between different color coordinates, different on / off states of the laser generators included in the N laser units, and different switching time ratios.

[0095] In one implementation, the control module 50 can, upon receiving a control command, acquire the operating mode status bit in the control command and determine the operating mode of the light source device based on the operating mode status bit. For example, the operating mode status bit can be a binary character; for instance, a value of 0 indicates an illumination mode, while a value of 1 indicates a projection mode.

[0096] Once the operating mode is determined, the control module 50 can determine the operating parameters of the N laser units 120 by looking up the corresponding operating parameter mapping table. Specifically, for a detailed description of the first and second operating parameter mapping tables, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0097] Therefore, in this embodiment, the control module 50 can control N laser units to operate according to the actual application scenario of the light source device 100. For example, in scenarios requiring high brightness (e.g., lighting scenarios), the control module 50 can use a constant current mode to control the N laser units to operate. Similarly, in scenarios emphasizing atmosphere (e.g., projection scenarios), the control module 50 can use a pulse mode to control the N laser units to operate, thus improving the application flexibility of the light source device 100.

[0098] This application provides a light source device 100 and an optical system 200 configured with the light source device 100. The light source device 100 may include a laser module 10, a fluorescence module 20, a guiding module 30, a combining module 40, and a control module 50. The laser module 10 may include N laser units 120, each laser unit 120 being used to generate one red laser R, one green laser G, and one blue laser B. The N blue lasers B generated by the N laser units 120 include M first blue lasers B1 and NM second blue lasers B2, where N and M are both greater than 1, and N is greater than M. The guiding module 30 is disposed on the optical paths of the N blue lasers B, N green lasers G, and N red lasers R generated by the N laser units 120, and is used to guide the M first blue lasers B1, N green lasers G, and N red lasers R to the combining module 40, and also to guide the NM second blue lasers B2 to the fluorescence module 20. The fluorescence module 20 is located in the optical path of the second blue laser B2 in the NM path, and is used to generate a specified fluorescence F1 under the excitation of the second blue laser B2 in the NM path.

[0099] A light combining module 40 is positioned on the optical paths of the M-path first blue laser B1, N-path green lasers G, N-path red lasers R, and a designated fluorescent light F1. It combines the incident light rays to the light combining module 40 to generate a designated combined light D. A control module 50 is electrically connected to the laser module 10 and is used to adjust the operating parameters of the N laser units 120 to adjust the light parameters of the designated combined light D. The light parameters include at least one of color coordinates and brightness. For example, the control module 50 can selectively activate some lasers to adjust the proportion of different colors (different spectra) in the designated combined light D, thereby adjusting the color coordinates of the designated combined light D. For example, if the designated combined light D is reddish, the control module 50 can activate all the red lasers R and deactivate all or some of the lasers in the M-path first blue laser B1 and the N-path green lasers G to increase the proportion of red light in the designated combined light D.

[0100] Therefore, in this embodiment, the control module 50 can adjust the color of the specified combined light D according to the actual application requirements of the optical system 200 equipped with the light source device 100, thereby improving the flexibility of color adjustment. Of course, the control module 50 can also adjust the brightness of the specified combined light D. For example, when the light source device 100 is operating in a scenario requiring high brightness, the control module 50 can increase the number of lasers activated to improve the overall brightness of the specified combined light D, thus improving the flexibility of brightness adjustment.

[0101] Since a portion of the blue laser is used to excite a specific fluorescent F1, and another portion of the blue laser is used to directly participate in light combination, the light source device 100 in this embodiment can achieve more flexible light display. For example, the light source device 100 can achieve a higher brightness lighting mode or a higher color rendering index projection mode, thus enriching the application scenarios of the light source device 100.

[0102] Furthermore, the blue laser used to excite the specified fluorescence F1 is a portion of the N blue laser beams generated by the N laser units (i.e., NM second blue laser beams B2). Therefore, no additional light source to generate excitation light is needed in the light source device 100, and the optical path design can be simplified. Specifically, there is no need to set up a time-division switching component in the optical path, nor is there a need to set up a complex optical path bypass, which can save layout space and hardware costs for the light source device 100.

[0103] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.

[0104] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0105] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0107] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A light source apparatus, characterized by comprising: The laser module, the fluorescence module, the guide module, the light combination module and the control module are included; the laser module includes N laser units, each of which is used to generate a red laser, a green laser and a blue laser; wherein N blue lasers generated by the N laser units include M first blue lasers and N-M second blue lasers, N and M are greater than 1, and N is greater than M; The guide module is arranged on the light path of N blue lasers, N green lasers and N red lasers generated by the N laser units, and is used to guide M first blue lasers, N green lasers and N red lasers to the light combination module, and is also used to guide N-M second blue lasers to the fluorescence module; The fluorescence module is arranged on the light path of N-M second blue lasers, and is used to generate specified fluorescence under the excitation of N-M second blue lasers; The light combination module is arranged on the light path of M first blue lasers, N green lasers, N red lasers and the specified fluorescence, and is used to combine the light incident on the light combination module to generate specified combined light; The control module is electrically connected with the laser module, and is used to adjust the working parameters of the N laser units to adjust the light parameters of the specified combined light; the light parameters include at least one of color coordinates and luminous flux.

2. The light source apparatus according to claim 1, wherein The N laser units include a plurality of first laser units arranged in a specified direction, and the plurality of first laser units are arranged on the same side of the light combination module; the specified direction is the direction from the light combination module to the plurality of first laser units; The plurality of first laser units include a first target laser unit, and the first target laser unit is a first laser unit of the plurality of first laser units farthest from the light combination module; the blue laser generated by the first target laser unit is the second blue laser.

3. The light source apparatus according to claim 2, wherein The guide module includes a first guide and a first reflector; the first guide is arranged on the light path of the green laser and the second blue laser generated by the first target laser unit, and is used to transmit the green laser to the first reflector and reflect the second blue laser; The first reflector is arranged on the light path of the green laser transmitted through the first guide and the red laser generated by the first target laser unit, and is used to reflect the green laser and the red laser to the light combination module; Wherein, the second blue laser reflected through the first guide propagates away from the light combination module; the green laser and the red laser reflected through the first reflector propagate towards the light combination module.

4. The light source apparatus according to claim 2, wherein The plurality of first laser units include a second target laser unit, and the blue laser generated by the second target laser unit is the first blue laser; The guide module further includes a second reflector, and the second reflector is arranged on the light path of the green laser, the red laser and the first blue laser generated by the second target laser unit, and is used to reflect the green laser, the red laser and the first blue laser to the light combination module.

5. The light source apparatus according to claim 2, wherein N is an even number greater than or equal to 4, and the number of first laser units is N / 2. N laser units further include N / 2 second laser units arranged in sequence in the specified direction, light emitting surfaces of the N / 2 second laser units being opposite to light emitting surfaces of the N / 2 first laser units; The N / 2 second laser units include a third target laser unit, the third target laser unit being a second laser unit of the second laser units farthest from the light combination module; the light emitting surface of the third target laser unit is opposite to the light emitting surface of the first target laser unit, and the blue laser generated by the third target laser unit is the second blue laser.

6. The light source apparatus according to any one of claims 1 to 5, wherein The light combination module is further arranged on an optical path of N-M paths of the second blue laser emitted via the guide module, for guiding the N-M paths of the second blue laser to the fluorescent module.

7. The light source apparatus according to any one of claims 1 to 5, wherein The light combination module includes a light combination piece, the light combination piece being provided with an adjacent reflection part and a transmission part; the reflection part is arranged on an optical path of the specified fluorescence, for reflecting the specified fluorescence; The transmission part is arranged on an optical path of M paths of the first blue laser, N paths of the green laser and N paths of the red laser, for transmitting the M paths of the first blue laser, the N paths of the green laser and the N paths of the red laser.

8. The light source apparatus according to claim 7, wherein The light combination piece includes a body, a reflection layer and a transmission layer, a surface of the body being divided into a first region and a second region; the transmission layer covers the first region to form the transmission part; The second region surrounds an outer periphery of the first region; the reflection layer covers the second region to form the reflection part.

9. The light source apparatus according to claim 8, wherein The polarization state of the laser generated by the laser unit is a first polarization state; The transmission layer is used for transmitting light rays of the first polarization state and reflecting light rays of a second polarization state; the second polarization state and the first polarization state are both linear polarization states, and are orthogonal to each other.

10. The light source apparatus according to claim 7, wherein The light combination module further includes a compression lens, the compression lens being located between the light combination piece and the guide module, and being located on an optical path of M paths of the first blue laser, N paths of the green laser and N paths of the red laser emitted by the guide module; The compression lens is used for compressing the M paths of the first blue laser, the N paths of the green laser and the N paths of the red laser, so that the compressed M paths of the first blue laser, the N paths of the green laser and the N paths of the red laser are incident to the transmission part of the light combination piece.

11. The light source apparatus according to claim 7, wherein The guide module includes a plurality of mirrors, the plurality of mirrors being arranged in sequence on an optical path of N-M paths of the second blue laser emitted by the laser module, for reflecting the N-M paths of the second blue laser to the fluorescent module.

12. The light source apparatus according to claim 11, wherein The plurality of mirrors include a target mirror, the target mirror and the fluorescent module being located on opposite sides of the light combination piece, and the transmission part of the light combination piece being further used for transmitting the N-M paths of the second blue laser.

13. The light source apparatus according to any one of claims 1 to 5, wherein The fluorescent module includes a reflective fluorescent color wheel; or The fluorescent module includes an LED chip and a fluorescent layer, the LED chip is used to generate blue light; the fluorescent layer covers the light emitting surface of the LED chip, and is used to generate target fluorescent light under the excitation of the blue light; the light combination module is also arranged on the light path of the target fluorescent light; the fluorescent layer is also arranged on the light path of the N-M second blue laser to generate the specified fluorescent light under the excitation of the N-M second blue laser.

14. The light source apparatus according to any one of claims 1 to 5, wherein The laser unit includes a blue laser generator, a green laser generator and a red laser generator, the blue laser generator is used to generate the blue laser; the green laser generator is used to generate the green laser; the red laser generator is used to generate the red laser; the control module is configured to: determine the working parameters of N laser units based on the light parameter of the specified combined light and a preset working parameter mapping table; the working parameters include at least one of the opening and closing state and the switch time proportion of the laser generator included in the N laser units, and the working parameter mapping table represents the mapping relationship between different light parameters and different working parameters of the N laser units; control N laser units to work based on the working parameters of the N laser units.

15. The light source apparatus according to claim 14, wherein The light parameter of the specified combined light includes color coordinates; the control module is further configured to: obtain the working mode of the light source device, the working mode includes a projection mode and an illumination mode; the luminous flux of the illumination mode is greater than that of the projection mode; in the case that the working mode is the illumination mode, determine the working parameters of N laser units based on the color coordinates and a first working parameter mapping table; the first working parameter mapping table represents the mapping relationship between different color coordinates and different opening and closing states of the laser generator included in the N laser units; in the case that the working mode is the projection mode, determine the working parameters of N laser units based on the color coordinates and a second working parameter mapping table; the second working parameter mapping table represents the mapping relationship between different color coordinates, different opening and closing states of the laser generator included in the N laser units and different switch time proportions.

16. An optical system characterized by, comprise: The light source device according to any one of claims 1 to 15, the light source device is used to generate specified combined light; and an imaging module arranged on the light path of the specified combined light.

Images