Light source device and projection equipment

Abstract

The utility model discloses a light source device and projection equipment, the light source device comprises a laser module, a fluorescent module and a dodging piece, and the laser module is used for generating specified laser; the fluorescence module is used for generating specified fluorescence; the dodging piece is arranged on a light path where the specified laser and the specified fluorescent light are located; the dodging piece is provided with a light incident surface, the specified laser is incident to the light incident surface to form a laser spot, the specified fluorescent light is incident to the light incident surface to form a fluorescent light spot, and the laser spot and the fluorescent light spot do not coincide. The laser spot and the fluorescent light spot are not overlapped, so that the specified laser and the specified fluorescent light are not combined in the process of being transmitted to the light uniformizing piece, but are respectively incident to the light uniformizing piece as two paths of independent light rays. Therefore, the light source device can avoid fluorescence loss caused by the arrangement of the light combination part, so that the projection equipment provided with the light source device has higher projection brightness.

Description

Technical Field

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

[0002] Currently, the main light source used in projection devices is the RGB laser light source, which has advantages such as high brightness, wide color gamut, and good monochromaticity. However, for projection devices using small F-number lenses, the RGB laser light source cannot provide significant brightness gain.

[0003] To address these issues, researchers proposed a hybrid light source combining laser and fluorescence (e.g., LED), which enhances the brightness of the projection device by incorporating a fluorescent light source into the laser source. However, when the laser and fluorescent light sources are combined using a light combiner (e.g., a regional light combiner or a polarizing light combiner), the fluorescence produced by the fluorescent light source experiences some loss during the light combining process, reducing the projection brightness of the projection device. Utility Model Content

[0004] This application provides a light source device and a projection device.

[0005] According to a first aspect of this application, an embodiment of this application provides a light source device, which includes a laser module, a fluorescence module, and a light homogenizer. The laser module generates a specified laser beam, and the fluorescence module generates a specified fluorescence beam. The light homogenizer is disposed in the optical path containing the specified laser beam and the specified fluorescence beam. The light homogenizer has an incident surface; the specified laser beam is incident on the incident surface to form a laser spot, and the specified fluorescence beam is incident on the incident surface to form a fluorescence spot; the laser spot and the fluorescence spot do not overlap.

[0006] In some possible embodiments, the optical path of the specified laser and the optical path of the specified fluorescence do not overlap.

[0007] In some possible embodiments, the area of ​​the laser spot is less than or equal to the area of ​​the fluorescent spot.

[0008] In some possible embodiments, the fluorescence module includes a first blue laser and a fluorescence wheel; wherein the first blue laser is used to generate a first blue laser. The fluorescence wheel is disposed in the optical path of the first blue laser, and the fluorescence wheel includes alternating green fluorescence regions, red fluorescence regions, and yellow fluorescence regions. The green fluorescence regions generate green fluorescence under the excitation of the first blue laser, the red fluorescence regions generate red fluorescence under the excitation of the first blue laser, and the yellow fluorescence regions generate yellow fluorescence under the excitation of the first blue laser. The green, red, and yellow fluorescence are emitted sequentially in a first time sequence to form a specified fluorescence. The laser module includes a red laser, a green laser, and a beam combining component; wherein the red laser is used to generate a red laser, and the green laser is used to generate a green laser; the beam combining component is disposed in the optical path of the red and green lasers, and the red and green lasers are emitted sequentially via the beam combining component in a second time sequence to form a specified laser.

[0009] In some possible embodiments, the green fluorescent region, red fluorescent region, and yellow fluorescent region are sequentially located along the optical path of the first blue laser. When the green fluorescent region is located in the optical path of the first blue laser, the fluorescent wheel generates green fluorescence, the green laser operates to generate green laser light, and the homogenizer homogenizes the green fluorescence and green laser light to put the light source device in green field operating mode. When the red fluorescent region is located in the optical path of the first blue laser, the fluorescent wheel generates red fluorescence, the red laser operates to generate red laser light, and the homogenizer homogenizes the red fluorescence and red laser light to put the light source device in red field operating mode. When the yellow fluorescent region is located in the optical path of the first blue laser, the fluorescent wheel generates yellow fluorescence, the red laser operates to generate red laser light, and the homogenizer homogenizes the yellow fluorescence and red laser light to put the light source device in yellow field operating mode.

[0010] In some possible embodiments, the fluorescent wheel is a reflective fluorescent wheel. The fluorescent module also includes a first dichroic filter, which is disposed in the optical path containing the first blue laser and the designated fluorescence. The first dichroic filter reflects the first blue laser to the fluorescent wheel and transmits the designated fluorescence to the homogenizer. The fluorescent module also includes a beam splitter, which includes alternating transmission and reflection regions, which are sequentially and cyclically located in the optical path containing the first blue laser. When the transmission region is located in the optical path containing the first blue laser, the first blue laser is transmitted through the beam splitter and incident on one side of the first dichroic filter. The first dichroic filter reflects the first blue laser to the homogenizer. The homogenizer homogenizes the first blue laser to put the light source device in a blue field operating mode. When the reflection region is located in the optical path containing the first blue laser, the first blue laser is reflected by the beam splitter and incident on the other side of the first dichroic filter. The first dichroic filter reflects the first blue laser to the fluorescent wheel.

[0011] In some possible embodiments, the fluorescent wheel is a reflective fluorescent wheel; the fluorescent module also includes a first dichroic filter, which is disposed on the optical path where the first blue laser and the designated fluorescence are located, for reflecting the first blue laser to the fluorescent wheel and transmitting the designated fluorescence to the homogenizing component; the laser module also includes a second blue laser, which is used to generate the second blue laser; a beam combining component is disposed on the optical path where the red laser, green laser, and second blue laser are located, and the red laser, green laser, and second blue laser are emitted sequentially via the beam combining component in a second sub-time sequence to form the designated laser; when the second blue laser is working to generate the second blue laser, the first blue laser stops working; the homogenizing component homogenizes the second blue laser to put the light source device in blue field working mode.

[0012] In some possible embodiments, the fluorescent wheel is a reflective fluorescent wheel, and the fluorescent wheel also includes a laser reflection area; the fluorescent module also includes a second dichroic filter, which is disposed on the optical path where the first blue laser and the designated fluorescence are located, for transmitting the first blue laser to the fluorescent wheel and reflecting the designated fluorescence to the homogenizer; the green fluorescent area, red fluorescent area, yellow fluorescent area and laser reflection area are sequentially located on the optical path where the first blue laser is located; when the laser reflection area is located on the optical path where the first blue laser is located, the first blue laser is reflected by the laser reflection area to form a third blue laser, and the optical path of the third blue laser does not coincide with the optical path of the first blue laser; the fluorescent module also includes a laser reflector, which is disposed on the side of the second dichroic filter away from the fluorescent wheel and located on the optical path where the third blue laser is located, for reflecting the third blue laser transmitted through the second dichroic filter back to the second dichroic filter, so that the third blue laser is transmitted through the second dichroic filter and incident on the homogenizer; the homogenizer homogenizes the third blue laser so that the light source device is in blue field working mode.

[0013] In some possible embodiments, the fluorescent wheel is a transmissive fluorescent wheel, and the fluorescent wheel also includes a laser transmission region; the green fluorescent region, red fluorescent region, yellow fluorescent region and laser transmission region are sequentially and cyclically located on the optical path where the first blue laser is located; when the laser transmission region is located on the optical path where the first blue laser is located, the first blue laser is transmitted through the laser transmission region and then incident on the homogenizer; the homogenizer homogenizes the first blue laser so that the light source device is in the blue field working mode.

[0014] In some possible embodiments, the fluorescent wheel is a transmissive fluorescent wheel. The laser module also includes a second blue laser for generating a second blue laser; a beam combining component is disposed in the optical path containing the red laser, green laser, and second blue laser, and the red laser, green laser, and second blue laser are emitted sequentially via the beam combining component in a second sub-timing sequence to form a specified laser; when the second blue laser is operating to generate the second blue laser, the first blue laser stops operating; a beam homogenizer homogenizes the second blue laser to put the light source device in blue field operating mode.

[0015] According to a second aspect of this application, an embodiment of this application also provides a projection device, which includes the above-described light source device and light modulator, wherein the light source device is used to generate light to be modulated, and the light modulator is disposed in the optical path where the light to be modulated is located.

[0016] This application provides a light source device and a projection device. The light source device includes a laser module, a fluorescence module, and a light homogenizer. The light homogenizer is disposed in the optical path where a specified laser generated by the laser module and a specified fluorescence generated by the fluorescence module are located. The light homogenizer has an incident surface. The specified laser is incident on the incident surface to form a laser spot, and the specified fluorescence is incident on the incident surface to form a fluorescence spot. The laser spot and the fluorescence spot do not overlap.

[0017] Since the laser spot and the fluorescence spot at the incident surface of the light homogenizer do not overlap, it indicates that the designated laser and the designated fluorescence did not combine during their propagation to the light homogenizer, but rather entered the light homogenizer as two independent light rays. Therefore, the designated laser and designated fluorescence in this application do not adopt the technical solution of "combining light with a light-combining device before entering the light homogenizer," which can avoid fluorescence loss caused by setting a light-combining device, thereby enabling the projection device equipped with this light source to have higher projection brightness. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of a light source device provided in an embodiment of this application.

[0020] Figure 2 yes Figure 1 A schematic diagram of the incident surface of the light homogenizer in the light source device shown.

[0021] Figure 3 yes Figure 2The diagram shows the surface distribution of the laser spot at the incident light surface.

[0022] Figure 4 yes Figure 2 The diagram shows the surface distribution of the fluorescence spot at the incident light surface.

[0023] Figure 5 This is a schematic diagram of the angular distribution of a specified laser beam at the light-emitting surface of a beam homogenizer, provided in an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the surface distribution of a specified laser at the light-emitting surface of a light homogenizer, provided in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the angular distribution of a specified fluorescence at the light-emitting surface of a light homogenizer, provided in an embodiment of this application.

[0026] Figure 8 This is a schematic diagram of the surface distribution of a specified fluorescence at the light-emitting surface of a light homogenizer, provided in an embodiment of this application.

[0027] Figure 9 This is a schematic diagram of the surface distribution of a specified laser and a specified fluorescence at the light-emitting surface of a light homogenizer, provided in an embodiment of this application.

[0028] Figure 10 This is another structural schematic diagram of the light source device provided in the embodiments of this application.

[0029] Figure 11 yes Figure 10 A schematic diagram of the fluorescent wheel in the light source device shown.

[0030] Figure 12 This is another structural schematic diagram of the light source device provided in the embodiments of this application.

[0031] Figure 13 yes Figure 12 A schematic diagram of the beam splitter in the light source device shown.

[0032] Figure 14 yes Figure 12 Another schematic diagram of the fluorescent wheel in the light source device shown.

[0033] Figure 15 This is yet another structural schematic diagram of the light source device provided in the embodiments of this application.

[0034] Figure 16 This is another structural schematic diagram of the light source device provided in the embodiments of this application.

[0035] Figure 17 yes Figure 16 This is another schematic diagram of the fluorescent wheel in the light source device shown.

[0036] Figure 18 This is another structural schematic diagram of the light source device provided in the embodiments of this application.

[0037] Figure 19 yes Figure 18 Another schematic diagram of the fluorescent wheel in the light source device shown.

[0038] Figure 20 This is another structural schematic diagram of the light source device provided in the embodiments of this application.

[0039] Figure 21 This is a light emission timing diagram of the light source device provided in the application embodiment.

[0040] Figure 22 This is a schematic diagram of the projection device provided in the application embodiment. Detailed Implementation

[0041] 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.

[0042] This application provides a light source device 100, which can be applied to a projection device and provides the projection device with light to be modulated, so that the projection device modulates the light to produce a projected image. Specifically, the projection device can be a projector, laser TV, etc.

[0043] Please see Figure 1 and Figure 2 The light source device 100 may include a laser module 20, a fluorescence module 30, and a light homogenizer 40. The laser module 20 generates a specified laser beam L, and the fluorescence module 30 generates a specified fluorescence beam F. The light homogenizer 40 is disposed in the optical path containing the specified laser beam L and the specified fluorescence beam F. The light homogenizer 40 has an incident surface 410. The specified laser beam L is incident on the incident surface 410 to form a laser spot S1, and the specified fluorescence beam F is incident on the incident surface 410 to form a fluorescence spot S2. The laser spot S1 and the fluorescence spot S2 do not overlap. Specifically, the light homogenizer 40 may be a light homogenizer rod (e.g., a four-corner light homogenizer rod, a hexagonal light homogenizer rod), a compound eye lens, etc. Figure 2 In the embodiment shown, the light-diffusing element 40 is a hexagonal light-diffusing rod, and its corresponding incident surface 410 is hexagonal.

[0044] Since the laser spot S1 and the fluorescence spot S2 at the light incident surface 410 of the light homogenizer 40 do not overlap, it indicates that the designated laser L and the designated fluorescence F did not combine during their propagation to the light homogenizer 40, but instead entered the light homogenizer 40 as two independent light rays. Therefore, in this embodiment, the designated laser L and the designated fluorescence F do not adopt the technical solution of "setting up a light combining element to combine the light before entering the light homogenizer", which can avoid fluorescence loss caused by setting up a light combining element, so that the projection device equipped with the light source device 100 has higher projection brightness.

[0045] In some possible embodiments, the optical paths of the designated laser L and the designated fluorescence F do not overlap. Here, "the optical path of the designated laser L" should be understood as the optical path of the designated laser L propagating from the laser module 20 to the incident surface 410; "the optical path of the designated fluorescence F" should be understood as the optical path of the designated fluorescence F propagating from the fluorescence module 30 to the incident surface 410. The fact that their optical paths do not overlap indicates that during propagation to the incident surface 410, no beam combiner is used to combine the designated laser L and the designated fluorescence F, so that when the designated laser L and the designated fluorescence F are incident on the incident surface 410, they can form two independent light spots respectively.

[0046] It's easy to understand here that if a beam combiner is used to combine a specified laser L and a specified fluorescence F—for example, a beam combiner that transmits the specified laser L and reflects the specified fluorescence F—the specified laser L and the specified fluorescence F will be combined into a single beam after exiting the beam combiner. Therefore, only one light spot will be formed on the incident surface 410. Furthermore, due to the presence of the beam combiner, some light will be lost from the specified fluorescence F during the beam combining process.

[0047] Therefore, by eliminating the light combining component and using the light equalizing component 40 to directly combine and equalize the specified laser L and the specified fluorescence F, this embodiment can reduce the hardware cost of the light source device 100 on the one hand, and avoid the light combining loss caused by setting the light combining component on the other hand, so that the projection device has higher projection brightness.

[0048] Please see Figure 3 and Figure 4 The diagram shows simulation schematics of the laser spot S1 and the fluorescence spot S2 at the incident surface 410, respectively. Figure 3 A schematic diagram of the surface distribution corresponding to laser spot S1. Figure 4A schematic diagram of the surface distribution corresponding to the fluorescence spot S2. Specifically, the area of ​​the laser spot S1 is less than or equal to the area of ​​the fluorescence spot S2, so that the specified laser L and the specified fluorescence F can obtain a surface distribution with good uniformity after being homogenized by the homogenizer 40. For example, the ratio of the area of ​​the fluorescence spot S2 to the area of ​​the laser spot S1 can be greater than or equal to 50 and less than or equal to 200. For example, the ratio can be 50, 80, 100, 120, 150, 180, 200, etc., and this embodiment does not make a specific limitation.

[0049] Please see Figure 5 and Figure 6 It shows a simulation diagram of a specified laser L at the light-emitting surface of the homogenizer 40, wherein, Figure 5 A schematic diagram showing the angular distribution of the specified laser L at the light-emitting surface. Figure 6 A schematic diagram showing the surface distribution of the specified laser L at the emission surface. (Combined with...) Figure 5 and Figure 6 It is not difficult to see that when emitted through the homogenizer 40, the specified laser L has a relatively uniform surface and angular distribution.

[0050] Please see Figure 7 and Figure 8 It shows a simulation diagram of a specified fluorescence F at the light-emitting surface of the light homogenizer 40, wherein, Figure 7 A schematic diagram of the angular distribution of the specified fluorescence F at the light-emitting surface. Figure 8 A schematic diagram showing the surface distribution of the specified fluorescence F at the light-emitting surface. (Combined with...) Figure 7 and Figure 8 It is not difficult to see that when emitted through the homogenizer 40, the specified fluorescence F has a relatively uniform surface and angular distribution.

[0051] Please see Figure 9 It shows a schematic diagram of the surface distribution of a specified laser L and a specified fluorescence F at the light-emitting surface of the homogenizer 40 after the light is combined. This is combined with... Figure 3 , Figure 4 and Figure 9 It is easy to see that even if the specified laser L and the specified fluorescence F are two independent light rays that are incident on the light-incident surface 410 of the light-incident element 40 respectively, after being homogenized by the light-incident element 40, the two light rays will be combined into a light ray with uniform energy distribution on the surface and emitted from the light-out surface to ensure the projection quality of the projection device.

[0052] The specific optical path structure of the light source device 100 is described below.

[0053] Please see Figure 10 and Figure 11The fluorescence module 30 may include a first blue laser 310 and a phosphor wheel 320. The first blue laser 310 is used to generate a first blue laser LB1. Specifically, the first blue laser 310 may be a solid-state laser, a semiconductor laser, etc., and the center wavelength of the first blue laser LB1 may be greater than or equal to 400 nm and less than or equal to 500 nm. For example, the center wavelength may be 415 nm, 435 nm, 445 nm, 450 nm, and 488 nm, etc. This embodiment does not impose specific limitations.

[0054] A fluorescent wheel 320 is positioned on the optical path of the first blue laser LB1, and may include alternating green fluorescent regions 3210, red fluorescent regions 3230, and yellow fluorescent regions 3250. Figure 11 In the fluorescent wheel 320, green fluorescent region 3210, red fluorescent region 3230, and yellow fluorescent region 3250 are sequentially arranged around the outer periphery of the rotation center O1 of the fluorescent wheel 320. Specifically, green fluorescent region 3210 generates green fluorescence FG under the excitation of the first blue laser LB1, red fluorescent region 3230 generates red fluorescence FR under the excitation of the first blue laser LB1, and yellow fluorescent region 3250 generates yellow fluorescence FY under the excitation of the first blue laser LB1. Exemplarily, the surface of the fluorescent wheel 320 can be coated with different fluorescent particles to form different fluorescent regions, and different fluorescent ceramics can also be attached to the surface of the fluorescent wheel 320 to form different fluorescent regions. This embodiment does not limit the specific implementation of the fluorescent wheel 320.

[0055] It is easy to understand here that as the fluorescent wheel 320 rotates around the rotation center O1, the green fluorescent region 3210, the red fluorescent region 3230, and the yellow fluorescent region 3250 will sequentially and cyclically occupy the optical path of the first blue laser LB1, so that the green fluorescent FG, red fluorescent FR, and yellow fluorescent FY will be emitted in a first time sequence to form the designated fluorescence F. That is to say, in this embodiment, the designated fluorescence F refers to the combined light ray of the green fluorescent FG, red fluorescent FR, and yellow fluorescent FY in a time sequence. At a certain specified moment, the designated fluorescence F is one of the green fluorescent FG, red fluorescent FR, and yellow fluorescent FY.

[0056] It should be noted that in this embodiment, the fluorescence emission sequence (i.e., the first sequence) is "green-red-yellow". In some possible embodiments, the fluorescence emission sequence can be other sequences, such as green-yellow-red. In this case, the positions of the green fluorescent region 3210, red fluorescent region 3230, and yellow fluorescent region 3250 on the fluorescent wheel 320 can be adjusted accordingly. Of course, in other possible embodiments, the yellow fluorescence can also be omitted. In this case, the fluorescent wheel 320 may only include the green fluorescent region 3210 and the red fluorescent region 3230. This embodiment does not limit the specific emission method of the fluorescent wheel 320.

[0057] In some possible embodiments, the fluorescence module 30 may further include a collecting lens 330, which is disposed in the optical path of the designated fluorescence F to converge and collect the designated fluorescence F, thereby improving the energy utilization efficiency of the designated fluorescence F. Specifically, the collecting lens 330 may be a convex lens (e.g., a biconvex lens, a plano-convex lens, etc.), and the number of collecting lenses 330 may be one or more, to improve the collection efficiency of the designated fluorescence F. Figure 10 As shown, there are two collecting lenses 330, namely a first collecting lens 3320 and a second collecting lens 3340. The first collecting lens 3320 and the second collecting lens 3340 are sequentially arranged in the optical path where the specified fluorescence F is located, so as to improve the energy utilization efficiency of the specified fluorescence F.

[0058] In some possible embodiments, the fluorescence module 30 may further include a first converging lens 3410, which is disposed in the optical path of the designated fluorescence F emitted by the collecting lens 330, to converge the designated fluorescence F, thereby reducing the light spot of the designated fluorescence F so that the designated fluorescence F can be smoothly incident on the light incident surface 410 of the homogenizing member 40. Figure 10 As shown, the first converging lens 3410 can be disposed between the light homogenizer 40 and the second collecting lens 3340. It can be a convex lens (e.g., a biconvex lens, a plano-convex lens, etc.). The number of the first converging lens 3410 can be one or more. This embodiment does not specifically limit this.

[0059] In some possible embodiments, the fluorescence module 30 may further include a laser homogenizer 3430, which is disposed between the first blue laser 310 and the phosphor wheel 320, and located in the optical path of the first blue laser LB1. Specifically, the laser homogenizer 3430 can eliminate speckle in the first blue laser LB1, so that when the first blue laser LB1 is incident on the phosphor wheel 320, the energy distribution of the corresponding spot is more uniform, thereby improving the excitation efficiency of fluorescence. In addition, the laser homogenizer 3430 can also enlarge the spot size of the first blue laser LB1, so that the first blue laser LB1 can cover more area of ​​the phosphor wheel 320, thereby improving the excitation efficiency of fluorescence. Specifically, the laser homogenizer 3430 may be a homogenizing rod (e.g., a four-corner homogenizing rod, a hexagonal homogenizing rod), a compound eye lens, etc.

[0060] Please refer to it again. Figure 10The laser module 20 may include a red laser 210, a green laser 220, and a beam combiner 230. The red laser 210 generates a red laser (LR), and the green laser 220 generates a green laser (LG). Specifically, the red laser 210 and the green laser 220 may be solid-state lasers, semiconductor lasers, etc. The center wavelength of the red laser (LR) may be greater than or equal to 600 nm and less than or equal to 700 nm; for example, the center wavelength may be 600 nm, 635 nm, 638 nm, 650 nm, 680 nm, and 700 nm, etc., and this embodiment does not impose a specific limitation. The center wavelength of the green laser (LG) may be greater than or equal to 500 nm and less than or equal to 560 nm; for example, the center wavelength may be 500 nm, 515 nm, 520 nm, 532 nm, 550 nm, and 560 nm, etc., and this embodiment does not impose a specific limitation.

[0061] The beam combining component 230 is disposed in the optical path containing the red laser LR and the green laser LG. The red laser LR and the green laser LG are emitted sequentially via the beam combining component 230 in a second timing sequence to form a designated laser L. That is, in this embodiment, the designated laser L refers to the combined beam of the red laser LR and the green laser LG in a timing sequence. At a certain specified moment, the designated laser L is one of the red laser LR and the green laser LG.

[0062] Specifically, in Figure 10 In the illustrated embodiment, the light combining component 230 may include a first reflector 2310 and a first light combining element 2320. The first reflector 2310 is disposed in the optical path where the green laser LG is located, and is used to reflect the green laser LG to the first light combining element 2320. The first light combining element 2320 is disposed in the optical path where the green laser LG and the red laser LR are located, which are reflected by the first reflector 2310, and is used to reflect the red laser LR and transmit the green laser LG. Specifically, the first light combining element 2320 may be a green-transparent and red-reflective film.

[0063] It should be noted here that... Figure 10 The light combining component 230 in the figure is only schematic. The arrangement of the red laser 210 and the green laser 220 can be flexibly adjusted according to the emission direction of the specified laser L. This embodiment does not make specific limitations on this.

[0064] In some possible embodiments, the laser module 20 may further include a second converging lens 240, a second reflecting mirror 250, and a reflective scattering sheet 260, which are sequentially arranged in the optical path of the designated laser L. The second converging lens 240 is used to converge the designated laser L, thereby reducing the beam size of the designated laser L so that the designated laser L can be smoothly incident on the incident surface 410 of the homogenizer 40. Specifically, the second converging lens 240 may be a convex lens (e.g., a biconvex lens, a plano-convex lens, etc.), and the number of second converging lenses 240 may be one or more; this embodiment does not specifically limit this.

[0065] The second reflector 250 is used to reflect the designated laser L, which acts as an optical path folding mechanism to make the overall optical path structure of the laser module 20 more compact. The reflective scattering plate 260 can reflect and scatter the designated laser L. On the one hand, the reflective scattering plate 260 can reflect the designated laser L so that the designated laser L can be smoothly incident on the incident surface 410 of the homogenizer 40; on the other hand, the reflective scattering plate 260 can scatter the designated laser L to eliminate speckle in the designated laser L and improve the energy uniformity of the designated laser L.

[0066] The following is about Figure 10 The operating modes of the light source device 100 shown are described, which may include a green field operating mode, a red field operating mode, and a yellow field operating mode.

[0067] When the green fluorescent region 3210 is located in the optical path of the first blue laser LB1, the phosphor wheel 320 generates green fluorescence FG. The green laser 220 operates to generate green laser LG, and the homogenizer 40 homogenizes the green fluorescence FG and the green laser LG so that the light source device 100 is in green field operating mode.

[0068] When the red fluorescence region 3230 is located in the optical path of the first blue laser LB1, the phosphor wheel 320 generates red fluorescence FR. The red laser 210 operates to generate red laser LR, and the homogenizer 40 homogenizes the red fluorescence FR and the red laser LR so that the light source device 100 is in red field operating mode.

[0069] When the yellow fluorescence region 3250 is located in the optical path of the first blue laser LB1, the phosphor wheel 320 generates yellow fluorescence FY. The red laser 210 operates to generate red laser LR, and the homogenizer 40 homogenizes the yellow fluorescence FY and the red laser LR so that the light source device 100 is in yellow field operating mode.

[0070] It is easy to understand that the light source device 100 can emit light of the corresponding color when it is in different operating modes. For example, the light source device 100 in green field operating mode can emit green light, and the light source device 100 in red field operating mode can emit red light.

[0071] Therefore, the light source device 100 in this embodiment, by employing a novel laser and fluorescence light-combining method, can cyclically generate green, red, and yellow light. On one hand, by adjusting the power supply to control the emission sequence of each color light, the fluorescence and laser colors correspond, which facilitates wide color gamut imaging and enhances the market competitiveness of projection devices equipped with this light source device 100. On the other hand, compared to the scheme of combining fluorescence and laser light and then filtering it with a color filter, this embodiment eliminates the need for a color filter, reducing the hardware cost of the light source device 100 and avoiding light loss caused by color filter filtering, thereby improving the imaging brightness of the projection device.

[0072] In some possible embodiments, the light source device 100 may only generate green, red and yellow light. The projection device equipped with the light source device 100 may additionally provide a blue light source device for generating blue light. The blue light source device and the light source device 100 work together to meet the light modulation requirements of the projection device.

[0073] In some other possible embodiments, the light source device 100 can also generate blue light. In this case, the light source device 100 is in blue field working mode. Therefore, the light source device 100 in this embodiment can cyclically generate blue light, green light, red light and yellow light to meet the light modulation requirements of the projection device. For specific implementation methods, please refer to the embodiments below.

[0074] Please see Figure 12 and Figure 13 As one embodiment provided in this application, the laser module 20 and the fluorescence module 30 have some or all of the features or a combination of multiple features in the above embodiments (without conflict), which will not be repeated here.

[0075] exist Figure 12 In the illustrated embodiment, the fluorescent wheel 320 is a reflective fluorescent wheel, which may be provided with a reflective layer (not shown in the figure) to reflect the fluorescence generated by the fluorescent wheel 320. Therefore, compared with a transmissive fluorescent wheel, a reflective fluorescent wheel can achieve "dual excitation" of the first blue laser LB1 to improve the energy intensity of the fluorescence.

[0076] Specifically, the fluorescence module 30 may further include a first dichroic filter 3510, which is disposed in the optical path where the first blue laser LB1 and the designated fluorescence F are located. The first dichroic filter 3510 is used to reflect the first blue laser LB1 to the fluorescence wheel 320 and transmit the designated fluorescence F to the light homogenizer 40. Specifically, the first dichroic filter 3510 may be a blue-reflecting, red-green-transmitting film, or a blue-reflecting, yellow-transmitting film. Figure 12 In the embodiment shown, the first dichroic filter 3510 is located between the first converging lens 3410 and the second collecting lens 3340.

[0077] The fluorescence module 30 may further include a beam splitter 3520, which is disposed in the optical path of the first blue laser LB1. The beam splitter 3520 may include a phase-separated transmission region 3521 and a reflection region 3523. Figure 13 In the illustrated embodiment, the transmission region 3521 and the reflection region 3523 are disposed around the outer periphery of the rotation center O2 of the beam splitter 3520. Therefore, during the rotation of the beam splitter 3520, the transmission region 3521 and the reflection region 3523 will sequentially cycle along the optical path of the first blue laser LB1. Specifically, the beam splitter 3520 can be made of a transparent material (e.g., glass), and a portion of its side facing away from the first blue laser 310 can be fitted with or coated with a reflective film to form the reflection region 3523; while the area without a reflective film forms the transmission region 3521.

[0078] In some possible embodiments, the surface of the transmission region 3521 may also be provided with multiple scattering microstructures (not shown in the figure) so that the transmission region 3521 can scatter the first blue laser LB1 during the transmission of the first blue laser LB1, thereby eliminating speckle in the first blue laser LB1 and improving the energy distribution uniformity of the first blue laser LB1.

[0079] On one hand, when the transmission region 3521 is located in the optical path of the first blue laser LB1, the first blue laser LB1 is transmitted through the beam splitter 3520 and incident on one side of the first dichroic filter 3510. The first dichroic filter 3510 reflects the first blue laser LB1 to the homogenizer 40. The homogenizer 40 homogenizes the first blue laser LB1 so that the light source device 100 is in blue field operating mode.

[0080] Specifically, in Figure 11In the illustrated embodiment, the fluorescence module 30 may further include a third reflector 3530 and a fourth reflector 3540. The third reflector 3530 and the fourth reflector 3540 are sequentially arranged in the optical path where the first blue laser LB1 is transmitted through the beam splitter 3520. They respectively reflect the first blue laser LB1 to one side of the first dichroic filter 3510, so that the first blue laser LB1 can be smoothly reflected by the first dichroic filter 3510 and then incident on the homogenizer 40.

[0081] On the other hand, when the reflection region 3523 is located in the optical path of the first blue laser LB1, the first blue laser LB1 is reflected by the beam splitter 3520 and incident on the other side of the first dichroic filter 3510. The first dichroic filter 3510 reflects the first blue laser LB1 to the phosphor wheel 320. At this time, the first blue laser LB1 serves as the excitation light to excite fluorescence.

[0082] Specifically, in Figure 11 In the illustrated embodiment, the laser homogenizer 3430 is disposed on the optical path of the first blue laser LB1 after reflection by the beam splitter 3520, to homogenize the first blue laser LB1. The fluorescence module 30 may further include a fifth reflector 3550, which is disposed on the side of the laser homogenizer 3430 away from the beam splitter 3520 and located on the optical path of the first blue laser LB1 emitted after homogenization by the laser homogenizer 3430. The fifth reflector 3550 is used to reflect the first blue laser LB1 to the other side of the first dichroic filter 3510, so that the first blue laser LB1 can be smoothly reflected by the first dichroic filter 3510 and then incident on the phosphor wheel 320.

[0083] Therefore, in this embodiment, the first blue laser LB1 not only serves as the blue light generated by the light source device 100 in the blue field working mode, but also as the excitation light for fluorescence, realizing the reuse of the first blue laser LB1. This eliminates the need to set up an additional blue laser in the light source device 100, thus saving the hardware cost of the light source device 100.

[0084] It is not difficult to observe that when the transmission region 3521 is located within the optical path of the first blue laser LB1, the first blue laser LB1 will be reflected by the first dichroic filter 3510 and then incident on the homogenizer 40. In this case, the first blue laser LB1 will not be used as excitation light incident on the phosphor wheel 320. For further details, please refer to... Figure 14 The fluorescent wheel 320 may also include a blank area 3260, a green fluorescent area 3210, a red fluorescent area 3230, a yellow fluorescent area 3250, and a blank area 3260 arranged sequentially around the outer periphery of the rotation center O1 of the fluorescent wheel 320. Specifically, the blank area 3260 can be understood as an area where no fluorescent particles are set.

[0085] Specifically, when the beam splitter 3520 and the phosphor wheel 320 rotate, when the transmission region 3521 is located in the optical path of the first blue laser LB1, the phosphor wheel 320 rotates to the blank region 3260 and does not produce fluorescence; when the reflection region 3523 is located in the optical path of the first blue laser LB1, the phosphor wheel 320 rotates sequentially to the green fluorescence region 3210, the red fluorescence region 3230 and the yellow fluorescence region 3250, so that the phosphor wheel 320 sequentially emits green fluorescence FG, red fluorescence FR and yellow fluorescence FY.

[0086] Therefore, by setting a blank area 3260 on the fluorescent wheel 320, the manufacturing cost of the fluorescent wheel 320 can be saved, thereby reducing the hardware cost of the light source device 100.

[0087] Please see Figure 15 As another embodiment provided in this application, the laser module 20 and the fluorescence module 30 have some or all of the features or a combination of multiple features in the above embodiments (without conflict), which will not be described again here.

[0088] exist Figure 15 In the illustrated embodiment, the fluorescent wheel 320 is a reflective fluorescent wheel. The fluorescent module 30 may further include a first dichroic filter 3510, which is disposed in the optical path where the first blue laser LB1 and the designated fluorescent light F are located. The first dichroic filter 3510 is used to reflect the first blue laser LB1 to the fluorescent wheel 320 and transmit the designated fluorescent light F to the light homogenizer 40.

[0089] Specifically, in Figure 15 In the illustrated embodiment, the fluorescence module 30 may further include a transmissive scattering sheet 3610 and a sixth reflecting mirror 3630. The transmissive scattering sheet 3610 is disposed between the first blue laser 310 and the laser homogenizer 3430, and is located in the optical path of the first blue laser LB1. It is used to scatter the first blue laser LB1 to eliminate speckle in the first blue laser LB1, making the overall energy distribution of the first blue laser LB1 more uniform. The sixth reflecting mirror 3630 is disposed in the optical path of the first blue laser LB1 emitted through the transmissive scattering sheet 3610. It is used to reflect the first blue laser LB1 to the first dichroic filter 3510, which can act as an optical path folding mechanism, making the overall optical path structure of the fluorescence module 30 more compact. Therefore, in this embodiment, the first blue laser LB1 is only used as the excitation light for fluorescence.

[0090] exist Figure 15In the illustrated embodiment, the laser module 20 may further include a second blue laser 270, which generates a second blue laser LB2. Specifically, the second blue laser 270 may be a solid-state laser, a semiconductor laser, etc. The center wavelength of the second blue laser LB2 may be greater than or equal to 400 nm and less than or equal to 500 nm. For example, the center wavelength may be 415 nm, 435 nm, 445 nm, 450 nm, and 488 nm, etc. The center wavelength of the second blue laser LB2 may or may not be equal to the center wavelength of the first blue laser LB1. This embodiment does not impose specific limitations on this.

[0091] A beam combining component 230 is positioned on the optical path containing the red laser LR, the green laser LG, and the second blue laser LB2. The red laser LR, green laser LG, and second blue laser LB2 are emitted sequentially via the beam combining component 230 in a second sub-timing sequence to form a designated laser L. In other words, in this embodiment, the designated laser L refers to the combined beam of the second blue laser LB2, the red laser LR, and the green laser LG in a specific timing sequence. At a given moment, the designated laser L is one or two of the second blue laser LB2, the red laser LR, and the green laser LG. For example, when the second blue laser LB2 is emitted, the green laser LG can be emitted simultaneously to correct the blue field color.

[0092] Specifically, in Figure 15 In the illustrated embodiment, the light combining component 230 may include a seventh reflector 2330, a second light combining element 2340, and a third light combining element 2350. The seventh reflector 2330 is disposed in the optical path where the second blue laser LB2 is located, and is used to reflect the second blue laser LB2 to the second light combining element 2340. The second light combining element 2340 is disposed in the optical path where the second blue laser LB2 and the green laser LG are reflected by the seventh reflector 2330, and is used to reflect the green laser LG and transmit the second blue laser LB2. Specifically, the second light combining element 2340 may be a blue-transparent, green-reflecting film. The third light combining element 2350 is disposed in the optical path where the second blue laser LB2 transmitted by the second light combining element 2340, the green laser LG reflected by the second light combining element 2340, and the red laser LR are located, and is used to reflect the red laser LR and transmit the green laser LG and the second blue laser LB2. Specifically, the first light combining element 2320 may be a green-blue-transparent, red-reflecting film.

[0093] It should be noted here that... Figure 15 The light combining component 230 in the figure is only schematic. It can be flexibly adjusted according to the emission direction of the specified laser L, and the arrangement of the red laser 210, green laser 220 and second blue laser 270 is not specifically limited in this embodiment.

[0094] Specifically, when the second blue laser 270 is operating to generate the second blue laser LB2, the first blue laser 310 stops operating to prevent fluorescence from being excited, thus avoiding color mixing between the fluorescence (e.g., red fluorescence) and the second blue laser LB2. The homogenizer 40 homogenizes the second blue laser LB2 to put the light source device 100 into a blue field operating mode.

[0095] Therefore, in this embodiment, blue light is generated by additionally setting a second blue laser 270 in the laser module 20. Compared to Figure 12 The optical path structure shown is simpler in this embodiment than in the light source device 100. Since there is no need to set up a beam splitter 3520, the first blue laser LB1 can be directly reflected to the phosphor wheel 320 through the first dichroic color filter 3510.

[0096] It should be noted that the first dichroic color filter 3510 in this embodiment can also be implemented by transmitting the first blue laser LB1 and reflecting the specified fluorescence F, and no specific limitation is made here.

[0097] Please see Figure 16 and Figure 17 As another embodiment provided in this application, the laser module 20 and the fluorescence module 30 have some or all of the features or a combination of multiple features in the above embodiments (where there is no conflict), which will not be repeated here.

[0098] exist Figure 16 In the illustrated embodiment, the fluorescent wheel 320 is a reflective fluorescent wheel, and the fluorescent wheel 320 may further include a laser reflective region 3270. For example... Figure 17 As shown, the green fluorescent region 3210, the red fluorescent region 3230, the yellow fluorescent region 3250, and the laser reflective region 3270 are sequentially arranged around the outer periphery of the rotation center O1 of the fluorescent wheel 320. Specifically, a reflective film can be attached or plated on a portion of the surface area of ​​the fluorescent wheel 320 to form the laser reflective region 3270.

[0099] The fluorescence module 30 may further include a second dichroic filter 3710, which is disposed in the optical path where the first blue laser LB1 and the designated fluorescence F are located. The second dichroic filter 3710 transmits the first blue laser LB1 to the fluorescence wheel 320 and reflects the designated fluorescence F to the homogenizer 40. Specifically, the second dichroic filter 3710 may be a blue-transparent, red-green-reflecting film, or a blue-transparent, yellow-reflecting film. Figure 16 In the embodiment shown, the second dichroic filter 3710 is located between the laser homogenizer 3430 and the second collecting lens 3340.

[0100] In this embodiment, during the rotation of the fluorescent wheel 320, the green fluorescent region 3210, the red fluorescent region 3230, the yellow fluorescent region 3250, and the laser reflection region 3270 are sequentially located on the optical path of the first blue laser LB1. When the laser reflection region 3270 is located on the optical path of the first blue laser LB1, the first blue laser LB1 is reflected by the laser reflection region 3270 to form a third blue laser LB3. The optical path of the third blue laser LB3 does not coincide with the optical path of the first blue laser LB1.

[0101] Specifically, the optical axis of the first blue laser LB1 can be deviated from the optical axis of the collecting lens 330, so that the first blue laser LB1 will be incident on the laser reflection area 3270 at a certain angle (not 90 degrees) under the action of the collecting lens 330, so that the laser reflection area 3270 will also reflect the first blue laser LB1 at a certain angle, thereby making the optical path of the emitted third blue laser LB3 not coincide with the optical path of the first blue laser LB1.

[0102] exist Figure 16 In the illustrated embodiment, the fluorescence module 30 may further include a laser reflector 3720. The laser reflector 3720 is disposed on the side of the second dichroic filter 3710 opposite to the phosphor wheel 320 and located in the optical path of the third blue laser LB3. It reflects the third blue laser LB3 transmitted through the second dichroic filter 3710 back to the second dichroic filter 3710, so that the third blue laser LB3, after being transmitted through the second dichroic filter 3710, is incident on the homogenizer 40. The homogenizer 40 homogenizes the third blue laser LB3, so that the light source device 100 is in blue field operating mode.

[0103] Specifically, since the laser reflector 3720 and the first blue laser 310 are located on the same side of the second dichroic filter 3710, the laser reflector 3720 is offset from the optical path of the first blue laser LB1 to avoid the situation where the laser reflector 3720 blocks the first blue laser LB1, thereby ensuring that the first blue laser LB1 can be successfully incident on the phosphor wheel 320.

[0104] Therefore, in this embodiment, the first blue laser LB1 not only serves as the blue light generated by the light source device 100 in the blue field working mode, but also as the excitation light for fluorescence, realizing the reuse of the first blue laser LB1. This eliminates the need to set up an additional blue laser in the light source device 100, thus saving the hardware cost of the light source device 100.

[0105] Please see Figure 18 and Figure 19 As another embodiment provided in this application, the laser module 20 and the fluorescence module 30 have some or all of the features or a combination of multiple features in the above embodiments (where there is no conflict), which will not be repeated here.

[0106] exist Figure 18 In the illustrated embodiment, the phosphor wheel 320 is a transmissive phosphor wheel, and its body can be made of a transparent material (e.g., glass) so that the fluorescence formed after excitation can be smoothly transmitted through the phosphor wheel 320. Therefore, compared with a reflective phosphor wheel, the optical path structure using a transmissive phosphor wheel does not require a dichroic filter, making the overall structure of the light source device 100 simpler and more compact. For details, please refer to... Figure 19 The fluorescent wheel 320 may further include a laser transmission region 3280, a green fluorescent region 3210, a red fluorescent region 3230, a yellow fluorescent region 3250, and a laser transmission region 3280 sequentially arranged around the outer periphery of the rotation center O1 of the fluorescent wheel 320. Specifically, the body of the fluorescent wheel 320 may be a transparent material (e.g., glass), and a portion of this body may not be coated with fluorescent particles or have fluorescent ceramic attached, thereby forming the laser transmission region 3280.

[0107] In some other possible embodiments, the location corresponding to the laser transmission region 3280 can be "hollowed out" so that the first blue laser LB1 can pass directly through the laser transmission region 3280.

[0108] In this embodiment, during the rotation of the fluorescent wheel 320, the green fluorescent region 3210, the red fluorescent region 3230, the yellow fluorescent region 3250, and the laser transmission region 3280 are sequentially located in the optical path of the first blue laser LB1. When the laser transmission region 3280 is located in the optical path of the first blue laser LB1, the first blue laser LB1 is transmitted through the laser transmission region 3280 and then incident on the homogenizer 40. The homogenizer 40 homogenizes the first blue laser LB1 to ensure that the light source device 100 is in blue field operating mode.

[0109] Specifically, in Figure 18 In the embodiment shown, the fluorescence module 30 may further include an eighth reflector 3810, a third collecting lens 3820 and a fourth collecting lens 3830. The eighth reflector 3810, the third collecting lens 3820 and the fourth collecting lens 3830 are disposed between the laser homogenizer 3430 and the fluorescence wheel 320, and are located sequentially on the optical path of the first blue laser LB1.

[0110] The eighth reflector 3810 is used to reflect the first blue laser LB1, which can fold the optical path to make the overall optical path structure of the phosphor module 30 more compact. The third collecting lens 3820 and the fourth collecting lens 3830 are sequentially arranged on the optical path where the first blue laser LB1 is reflected by the eighth reflector 3810. They are used to converge and collect the first blue laser LB1 to improve the energy utilization efficiency of the first blue laser LB1.

[0111] Therefore, in this embodiment, the first blue laser LB1 not only serves as the blue light generated by the light source device 100 in the blue field working mode, but also as the excitation light for fluorescence, realizing the reuse of the first blue laser LB1. This eliminates the need to set up an additional blue laser in the light source device 100, thus saving the hardware cost of the light source device 100.

[0112] Please see Figure 20 As another embodiment provided in this application, the laser module 20 and the fluorescence module 30 have some or all of the features or a combination of multiple features in the above embodiments (where there is no conflict), which will not be repeated here.

[0113] exist Figure 20 In the illustrated embodiment, the phosphor wheel 320 is a transmissive phosphor wheel. The laser module 20 may further include a second blue laser 270, which generates a second blue laser LB2. A beam combining component 230 is disposed in the optical path containing the red laser LR, the green laser LG, and the second blue laser LB2. The red laser LR, the green laser LG, and the second blue laser LB2 are emitted sequentially via the beam combining component 230 in a second sub-timing sequence to form a designated laser L. Specifically, the specific implementation of the second blue laser 270 and the beam combining component 230 can be found in [reference needed]. Figure 15 The descriptions in the illustrated embodiments will not be repeated here to save space.

[0114] While the second blue laser 270 is operating to generate the second blue laser LB2, the first blue laser 310 stops operating to prevent fluorescence from being excited, thus avoiding color mixing between the fluorescence (e.g., red fluorescence) and the second blue laser LB2. The homogenizer 40 homogenizes the second blue laser LB2 to put the light source device 100 into blue field operating mode.

[0115] Therefore, in this embodiment, blue light is generated by additionally setting a second blue laser 270 in the laser module 20. Compared to Figure 18 As shown in the optical path structure, the fluorescent wheel 320 in this embodiment does not need to have a laser transmission area 3280, which makes its overall structure simpler and can reduce the processing cost of the fluorescent wheel 320.

[0116] Please see Figure 21This diagram illustrates the light emission timing of a light source device 100 provided in this embodiment. The horizontal axis represents time: 0 to t1 corresponds to "blue field B", t2 to t3 to "green field G", t4 to t5 to "red field R", and t6 to t7 to "yellow field Y". The vertical axis represents the light emission of laser and fluorescence at different times: in blue field B, blue laser (B laser) is emitted; in green field G, green laser (G laser) and green fluorescence (G fluorescence) are emitted; in red field R, red laser (R laser) and red fluorescence (R fluorescence) are emitted; and in yellow field Y, red laser (R laser) and yellow fluorescence (Y fluorescence) are emitted.

[0117] In some possible embodiments, during the blue field B, the light source device 100 may also add a green laser LG to correct the blue field color, thereby improving the imaging quality of the projection device.

[0118] It should be noted here that... Figure 21 The light emission sequence shown is only illustrative. This embodiment uses a "blue-green-red-yellow" light emission sequence. In other possible embodiments, "blue-green-yellow-red" or "blue-yellow-red-green" light emission sequences may also be used. This embodiment does not impose any specific limitations.

[0119] Please see Figure 22 This application also provides a projection device 500, which may include the light source device 100 in the above embodiments. Specifically, the projection device 500 may be a micro projector, a short-throw projector, a laser TV, an engineering projector, or a laser video wall, etc. The light source device 100 is used to generate light rays M to be modulated. The light rays M to be modulated may refer to blue light, green light, red light, and yellow light cyclically emitted by the light source device 100. For details on the specific implementation of the light source device 100, please refer to the relevant description above; further details will not be repeated here.

[0120] exist Figure 22 In the illustrated embodiment, the projection device 500 may further include a lens module 510, a prism module 520, a light modulator 530, and a projection lens 540. The lens module 510 is positioned in the optical path of the light beam M to be modulated, serving to converge the light beam M. Specifically, the lens module 510 may include a single lens or a lens group composed of multiple lenses. Figure 22In the illustrated embodiment, the lens module 510 may include a first lens 5100, a ninth reflector 5120, and a second lens 5140. The first lens 5100, the ninth reflector 5120, and the second lens 5140 are sequentially arranged in the optical path of the light ray M to be modulated. The ninth reflector 5120 is used to adjust the emission direction of the light ray M to be modulated, and the first lens 5100 and the second lens 5140 respectively serve to converge the light ray M to be modulated, thereby improving the energy utilization efficiency of the light ray M to be modulated.

[0121] A prism module 520 is disposed between the lens module 510 and the light modulator 530. It is used to reflect the light beam M to be modulated and focus it onto the light modulator 530. The light modulator 530 is disposed in the optical path of the light beam M to be modulated. It is used to modulate the light beam to form an image beam carrying image information. The prism module 520 is also used to transmit the light beam carrying image information to the projection area, such as a wall, projection screen, etc.

[0122] Specifically, the optical modulator 530 can be a Digital Micromirror Device (DMD). The DMD is composed of an array of digital micromirrors, with each micromirror forming a modulation unit. Each modulation unit modulates the image corresponding to one pixel. Each micromirror flips under the drive signal generated by the controller. The number of flips of each micromirror is determined by the drive signal. The flipped micromirrors modulate the light reflected from the prism module 520, forming light carrying image information. In other possible embodiments, the optical modulator 530 can also be an HTPS LCD display chip, a reflective LCD device (LCOS), etc. This embodiment does not limit the specific implementation of the optical modulator 530.

[0123] The projection lens 540 is positioned in the optical path of the light rays carrying image information emitted from the prism module 520. It is used to adjust the focal length of the light rays so that the light rays can be successfully imaged on the projection area. Specifically, the projection lens 540 may include a single lens or multiple lenses; this embodiment does not impose a specific limitation on it.

[0124] This application provides a light source device 100 and a projection device 500 equipped with the light source device 100. The light source device 100 may include a laser module 20, a fluorescence module 30, and a light homogenizer 40. The laser module 20 is used to generate a specified laser L, and the fluorescence module 30 is used to generate a specified fluorescence F. The light homogenizer 40 is disposed in the optical path where the specified laser L and the specified fluorescence F are located. The light homogenizer 40 has an incident surface 410. The specified laser L is incident on the incident surface 410 to form a laser spot S1, and the specified fluorescence F is incident on the incident surface 410 to form a fluorescence spot S2. The laser spot S1 and the fluorescence spot S2 do not overlap.

[0125] Since the laser spot S1 and the fluorescence spot S2 at the light incident surface 410 of the light homogenizer 40 do not overlap, it indicates that the designated laser L and the designated fluorescence F did not combine during their propagation to the light homogenizer 40, but instead entered the light homogenizer 40 as two independent light rays. Therefore, in this embodiment, the designated laser L and the designated fluorescence F do not adopt the technical solution of "setting up a light combining element to combine the light before entering the light homogenizer", which can avoid fluorescence loss caused by setting up a light combining element, so that the projection device equipped with the light source device 100 has higher projection brightness.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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: include: Laser module, used to generate a specified laser; The fluorescence module is used to generate the specified fluorescence. as well as A light homogenizer is disposed in the optical path where the specified laser and the specified fluorescence are located; the light homogenizer has an incident surface, the specified laser is incident on the incident surface to form a laser spot, the specified fluorescence is incident on the incident surface to form a fluorescence spot, and the laser spot and the fluorescence spot do not overlap.

2. The light source apparatus according to claim 1, wherein The optical path of the specified laser and the optical path of the specified fluorescence do not overlap.

3. The light source apparatus according to claim 1, wherein The area of ​​the laser spot is less than or equal to the area of ​​the fluorescent spot.

4. The light source apparatus according to any one of claims 1 to 3, wherein The fluorescence module includes a first blue laser and a fluorescence wheel; wherein, the first blue laser is used to generate a first blue laser. The fluorescent wheel is disposed in the optical path of the first blue laser. The fluorescent wheel includes alternating green fluorescent regions, red fluorescent regions, and yellow fluorescent regions. The green fluorescent regions generate green fluorescence when excited by the first blue laser, the red fluorescent regions generate red fluorescence when excited by the first blue laser, and the yellow fluorescent regions generate yellow fluorescence when excited by the first blue laser. The green fluorescence, the red fluorescence, and the yellow fluorescence are emitted sequentially in a first time sequence to form the specified fluorescence. The laser module includes a red laser, a green laser, and a beam combiner; wherein the red laser is used to generate red laser light, and the green laser is used to generate green laser light; the beam combiner is disposed in the optical path where the red laser light and the green laser light are located, and the red laser light and the green laser light are emitted sequentially via the beam combiner in a second time sequence to form the specified laser light.

5. The light source apparatus according to claim 4, wherein The green fluorescent region, the red fluorescent region, and the yellow fluorescent region are sequentially and cyclically located on the optical path of the first blue laser. When the green fluorescent region is located in the optical path of the first blue laser, the fluorescent wheel generates green fluorescence, the green laser operates to generate green laser, and the homogenizing element homogenizes the green fluorescence and the green laser so that the light source device is in green field working mode. When the red fluorescence region is located in the optical path of the first blue laser, the fluorescent wheel generates red fluorescence, the red laser operates to generate red laser, and the homogenizing element homogenizes the red fluorescence and the red laser so that the light source device is in red field working mode. When the yellow fluorescent region is located in the optical path of the first blue laser, the fluorescent wheel generates yellow fluorescence, the red laser operates to generate red laser, and the homogenizing element homogenizes the yellow fluorescence and the red laser so that the light source device is in yellow field operating mode.

6. The light source apparatus according to claim 4, wherein The fluorescent wheel is a reflective fluorescent wheel; the fluorescent module further includes a first dichroic filter, which is disposed in the optical path where the first blue laser and the specified fluorescence are located, for reflecting the first blue laser to the fluorescent wheel and transmitting the specified fluorescence to the light homogenizer; The fluorescence module further includes a beam splitter, which includes a phase-separated transmission region and a reflection region, wherein the transmission region and the reflection region are sequentially and cyclically located on the optical path of the first blue laser. When the transmission region is located in the optical path of the first blue laser, the first blue laser is transmitted through the beam splitter and incident on one side of the first dichroic filter. The first dichroic filter reflects the first blue laser to the homogenizer. The homogenizer homogenizes the first blue laser to make the light source device work in the blue field mode. When the reflection area is located in the optical path of the first blue laser, the first blue laser is reflected by the beam splitter and incident on the other side of the first dichroic filter, and the first dichroic filter reflects the first blue laser to the phosphor wheel.

7. The light source apparatus according to claim 4, wherein The fluorescent wheel is a reflective fluorescent wheel; the fluorescent module further includes a first dichroic filter, which is disposed in the optical path where the first blue laser and the specified fluorescence are located, for reflecting the first blue laser to the fluorescent wheel and transmitting the specified fluorescence to the light homogenizer; The laser module further includes a second blue laser, which is used to generate a second blue laser; the beam combining component is disposed in the optical path where the red laser, the green laser and the second blue laser are located, and the red laser, the green laser and the second blue laser are emitted sequentially via the beam combining component in a second sub-time sequence to form the designated laser; When the second blue laser is operating to generate the second blue laser, the first blue laser stops operating; the homogenizing element homogenizes the second blue laser to put the light source device into blue field operating mode.

8. The light source apparatus according to claim 4, wherein The fluorescent wheel is a reflective fluorescent wheel, and the fluorescent wheel also includes a laser reflection area; the fluorescent module also includes a second dichroic filter, which is disposed in the optical path where the first blue laser and the specified fluorescence are located, for transmitting the first blue laser to the fluorescent wheel and reflecting the specified fluorescence to the light homogenizer; The green fluorescent region, the red fluorescent region, the yellow fluorescent region, and the laser reflection region are sequentially located on the optical path of the first blue laser. When the laser reflection region is located on the optical path of the first blue laser, the first blue laser is reflected by the laser reflection region to form a third blue laser, and the optical path of the third blue laser does not coincide with the optical path of the first blue laser. The fluorescence module further includes a laser reflector, which is disposed on the side of the second dichroic filter away from the fluorescence wheel and located in the optical path of the third blue laser. The laser reflector is used to reflect the third blue laser transmitted through the second dichroic filter back to the second dichroic filter, so that the third blue laser is transmitted through the second dichroic filter and then incident on the homogenizer. The homogenizer homogenizes the third blue laser to put the light source device in blue field working mode.

9. The light source apparatus according to claim 4, wherein The fluorescent wheel is a transmissive fluorescent wheel, and the fluorescent wheel also includes a laser transmission area; The green fluorescent region, the red fluorescent region, the yellow fluorescent region, and the laser transmission region are sequentially and cyclically located on the optical path of the first blue laser. When the laser transmission region is located on the optical path of the first blue laser, the first blue laser is transmitted through the laser transmission region and then incident on the homogenizer. The homogenizer homogenizes the first blue laser to make the light source device work in the blue field mode.

10. The light source apparatus according to claim 4, wherein The fluorescent wheel is a transmissive fluorescent wheel; The laser module further includes a second blue laser, which is used to generate a second blue laser; the beam combining component is disposed in the optical path where the red laser, the green laser and the second blue laser are located, and the red laser, the green laser and the second blue laser are emitted sequentially via the beam combining component in a second sub-time sequence to form the designated laser; When the second blue laser is operating to generate the second blue laser, the first blue laser stops operating; the homogenizing element homogenizes the second blue laser to put the light source device into blue field operating mode.

11. A projection apparatus, characterized by comprising: include: The light source device according to any one of claims 1 to 10, wherein the light source device is used to generate light to be modulated; as well as An optical modulator is disposed on the optical path of the light to be modulated.

Images