Light source device and lighting equipment

Abstract

The utility model discloses a light source device and lighting equipment. The light source device comprises an exciting light source, a dodging module and a wavelength conversion module. Wherein the exciting light source is used for generating exciting light, and the exciting light has a fast axis direction and a slow axis direction. The light uniformizing module comprises a diffusion piece and a beam expanding piece, and the diffusion piece and the beam expanding piece are sequentially arranged on a light path where the exciting light is located; wherein in the slow axis direction, the beam expanding piece is used for expanding the exciting light scattered by the diffusion piece, so that beam-expanded exciting light is formed. The wavelength conversion module is arranged on a light path where the beam-expanded exciting light is located and used for generating specified fluorescence under excitation of the beam-expanded exciting light. The diffusion piece in the light uniformizing module can scatter and uniformize the whole exciting light, and the beam expanding piece can expand and uniformize the exciting light, so that the light spot energy distribution of the beam-expanded exciting light emitted by the beam expanding piece can be more uniform, and the excitation efficiency of specified fluorescence is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting, and more particularly, to a light source device and a lighting device. BACKGROUND

[0002] In the existing lighting lamps, a lighting mode of laser exciting fluorescence is usually adopted, for example, a blue laser exciting yellow fluorescence can be mixed to form white light.

[0003] However, since the laser is usually a Gaussian beam, the energy distribution of the light spot is strong in the center and weak in the periphery, which leads to the problem of low fluorescence excitation efficiency when exciting fluorescence. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a light source device and a lighting device.

[0005] According to a first aspect of the present application, the present application provides a light source device, which comprises an excitation light source, a uniform light module and a wavelength conversion module. The excitation light source is used to generate excitation light, and the excitation light has a fast axis direction and a slow axis direction. The uniform light module comprises a diffusion member and a beam expander, and the diffusion member and the beam expander are sequentially arranged on the light path of the excitation light; wherein, in the slow axis direction, the beam expander is used to expand the excitation light scattered by the diffusion member to form expanded excitation light. The wavelength conversion module is arranged on the light path of the expanded excitation light and is used to generate specified fluorescence under the excitation of the expanded excitation light.

[0006] In some possible embodiments, the beam expander is a cylindrical mirror; and the expanded excitation light is a flat-top beam in both the fast axis direction and the slow axis direction.

[0007] In some possible embodiments, the uniform light module further comprises a condenser and a diffuser, and the condenser and the diffuser are arranged on the side of the diffusion member away from the beam expander and are both located on the light path of the excitation light; wherein, the excitation light sequentially passes through the condenser and the diffuser and then is incident on the diffusion member.

[0008] In some possible embodiments, the excitation light source comprises a first laser array, a second laser array and a light combining member; wherein, the first laser array is used to generate M*N first sub-excitation light, and the second laser array is used to generate P*Q second sub-excitation light; the light combining member is arranged on the light path of the M*N first sub-excitation light and is arranged on the light path of the P*Q second sub-excitation light, and is used to combine the M*N first sub-excitation light and the P*Q second sub-excitation light to form the excitation light.

[0009] In some possible embodiments, the excitation light source further comprises a heat dissipation member and a reflection member; the first laser array and the second laser array are integrated on the same side of the heat dissipation member, so that the M*N first sub excitation lights and the P*Q second sub excitation lights are emitted in the same direction; and the reflection member is arranged on the light path of the P*Q second sub excitation lights, and is configured to reflect the P*Q second sub excitation lights to the light combining member.

[0010] In some possible embodiments, the light combining member is provided with a plurality of transmission regions and a plurality of reflection regions, and the plurality of transmission regions and the plurality of reflection regions are arranged in sequence and at intervals; the plurality of transmission regions are arranged on the light path of the M*N first sub excitation lights, and are configured to transmit the M*N first sub excitation lights; and the plurality of reflection regions are arranged on the light path of the P*Q second sub excitation lights, and are configured to reflect the P*Q second sub excitation lights.

[0011] In some possible embodiments, the light source device further comprises a light splitting member, the light splitting member is arranged between the light homogenizing module and the wavelength conversion module, and is located on the light path of the expanded excitation light; the light splitting member is configured to transmit the expanded excitation light; the wavelength conversion module comprises a wavelength conversion member, the wavelength conversion member generates specified fluorescence under excitation of the expanded excitation light, and reflects the specified fluorescence to the light splitting member; and the light splitting member is further configured to reflect the specified fluorescence.

[0012] In some possible embodiments, the light splitting member is configured to transmit a part of the expanded excitation light to form a first light path, and reflect another part of the expanded excitation light to form a second light path; the wavelength conversion member is arranged on the first light path; the light source device further comprises a scattering reflection module, the scattering reflection module is arranged on the second light path, and is configured to scatter and then reflect the other part of the expanded excitation light to the light splitting member; and the light splitting member is further configured to transmit the other part of the expanded excitation light, and combine the other part of the expanded excitation light with the specified fluorescence to form the illumination light.

[0013] In some possible embodiments, the light source device further comprises a condenser lens and an optical fiber, the condenser lens and the optical fiber are arranged in sequence on the light path of the illumination light, and the illumination light is coupled into the optical fiber after being converged by the condenser lens.

[0014] According to a second aspect of the present application, the embodiments of the present application further provide a lighting device, which comprises a housing and the above-mentioned light source device, and the light source device is arranged in the housing.

[0015] The embodiment of the present application provides a light source device and a lighting device, the light source device comprises an excitation light source, a light homogenizing module and a wavelength conversion module. The light homogenizing module comprises a diffusion member and a beam expander, and the diffusion member and the beam expander are sequentially arranged on a light path of the excitation light. The excitation light has a fast axis direction and a slow axis direction, and the divergence angle of the excitation light in the fast axis direction is greater than the divergence angle of the excitation light in the slow axis direction, so that the size of the light spot of the excitation light in the fast axis direction is greater than the size of the light spot in the slow axis direction.

[0016] In an aspect, the diffusion member in the light homogenizing module can uniformly scatter the whole excitation light, and the beam expander can uniformly expand the excitation light, so that the light spot energy distribution of the expanded excitation light emitted through the beam expander can be more uniform, and the expanded excitation light can excite more specified fluorescence under the tolerable power density of the wavelength conversion module, so that the excitation efficiency of the specified fluorescence is improved.

[0017] In another aspect, in the slow axis direction, the beam expander is specifically used for expanding the excitation light scattered through the diffusion member to form the expanded excitation light. That is, the beam expander can increase the scattering angle of the excitation light in the slow axis direction, so as to expand the size of the light spot of the excitation light in the slow axis direction. Therefore, when the expanded excitation light (that is, the expanded excitation light) is incident on the wavelength conversion module, the corresponding light spot area can be larger, so that the light spot of the expanded excitation light can cover more areas on the wavelength conversion module, and the excitation efficiency of the specified fluorescence is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 FIG. 1 is a structural schematic diagram of a lighting device provided by the embodiment of the present application.

[0020] Figure 2 FIG. 2 is a structural schematic diagram of a light source device in the lighting device shown in FIG. 1. Figure 1 FIG. 3 is a light path structural schematic diagram of the light source device shown in FIG. 2.

[0021] Figure 3 FIG. 4 is a structural schematic diagram of a light homogenizing module in the light source device shown in FIG. 2. Figure 2 FIG. 5 is a schematic diagram of light spots corresponding to excitation light and expanded excitation light in FIG. 2.

[0022] Figure 4 FIG. 6 is a light path structural schematic diagram of an excitation light source in the light source device shown in FIG. 2. Figure 2 FIG. 7 is a light path structural schematic diagram of the excitation light source in the light source device shown in FIG. 2.

[0023] Figure 5 is Figure 4 a schematic view of a light combining element in the excitation light source shown in

[0024] Figure 6 is Figure 1 another schematic view of a light path structure of the light source device in the illumination device shown in DETAILED DESCRIPTION

[0025] In order to enable persons skilled in the art to better understand the schemes of the present application, the technical schemes in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] The present application provides a light source device 100 and an illumination device 200 provided with the light source device 100, wherein the illumination device 200 refers to a device for illumination by laser, for example, the illumination device 200 can be a laser stage light, a laser flashlight, a laser projection light, etc.

[0027] Please refer to Figure 1 , the illumination device 200 can include a housing 201 and a light source device 100, the light source device 100 is arranged in the housing 201. The housing 201 is used to provide a mounting space for accommodating the light source device 100, and plays a role of fixing and protecting the light source device 100. The light source device 100 is used to generate illumination light L, and the housing 201 can also be provided with a light outlet 2010, so that the specified laser L is emitted to the outside through the light outlet 2010.

[0028] Please refer to Figure 2 and Figure 3 , the light source device 100 can include an excitation light source 10, a uniform light module 30 and a wavelength conversion module 50. Among them, the excitation light source 10 is used to generate excitation light J1, the excitation light J1 has a fast axis direction X and a slow axis direction Y, the fast axis direction X and the slow axis direction Y are perpendicular. Because the divergence angle of the excitation light J1 in the fast axis direction X is greater than the divergence angle of the excitation light J1 in the slow axis direction Y, the size of the spot of the excitation light J1 in the fast axis direction X is greater than the size of the spot in the slow axis direction Y. Specifically in the (a) region in Figure 3 , which shows the spot of the excitation light J1 at the first plane, which is approximately "elliptical". Among them, the first plane is the plane Figure 2 perpendicular to the optical axis of the excitation light J1, the long axis of the ellipse corresponds to the fast axis direction X, and the short axis of the ellipse corresponds to the slow axis direction Y.

[0029] The light homogenizing module 30 can include a diffusion member 320 and a beam expanding member 340, which are sequentially arranged on the light path of the excitation light J1. The beam expanding member 340 is configured to expand the excitation light J1 scattered by the diffusion member 320 in the slow axis direction Y to form the expanded excitation light J2. The wavelength conversion module 50 is arranged on the light path of the expanded excitation light J2 and is configured to generate the specified fluorescent light F under the excitation of the expanded excitation light J2.

[0030] In an aspect, the diffusion member 320 in the light homogenizing module 30 can scatter and homogenize the whole excitation light J1, and the beam expanding member 340 can expand and homogenize the excitation light J1, so that the spot energy distribution of the expanded excitation light J2 emitted by the beam expanding member 340 can be more uniform, and the expanded excitation light J1 can excite more specified fluorescent light F at a tolerable power density of the wavelength conversion module 50, thereby improving the excitation efficiency of the specified fluorescent light F.

[0031] In another aspect, the beam expanding member 340 can increase the scattering angle of the excitation light J1 in the slow axis direction Y to expand the size of the spot of the excitation light J1 in the slow axis direction Y. Specifically, in the (b) region in Figure 3 which shows the spot of the expanded excitation light J2 at the second plane, the spot is approximately circular, i.e., the size of the spot of the expanded excitation light J2 in the fast axis direction X is approximately equal to the size of the spot in the slow axis direction Y. The second plane is Figure 2 a plane perpendicular to the optical axis of the expanded excitation light J2 in

[0032] Therefore, when the expanded excitation light J1 (i.e., the expanded excitation light J2) is incident on the wavelength conversion module 50, the corresponding spot area can be larger, so that the spot of the expanded excitation light J2 can cover more areas on the wavelength conversion module 50, further improving the excitation efficiency of the specified fluorescent light F.

[0033] In some possible embodiments, the excitation light J1 is a Gaussian beam in the fast axis direction X and the slow axis direction Y, and the expanded excitation light J2 is a flat-top beam in the fast axis direction X and the slow axis direction Y. Therefore, the spot energy distribution of the expanded excitation light J2 in different spot regions is approximately equal in the embodiment, which can avoid the situation that the energy density of some spot regions (e.g., the central region of the spot) is too high and exceeds the tolerable power density of the wavelength conversion module 50, thereby ensuring the working reliability and safety of the wavelength conversion module 50.

[0034] The specific implementation of the light source device 100 is described below.

[0035] In the embodiment, the diffusion member 320 is used to homogenize the excitation light J1. In some possible embodiments, the diffusion member 320 can be a diffusion sheet, which can be made by adding scattering particles (for example, chemical particles) in a substrate, so that the excitation light J1 will be refracted, reflected and scattered between different scattering particles when passing through the diffusion sheet, to achieve the effect of scattering and homogenizing light. In other possible embodiments, the diffusion member 320 can also be a micro-structured light diffusion plate, the surface of which is provided with a micro-structure array (for example, a micro-lens array), so that the excitation light J1 will be refracted in different directions when passing through, to achieve the effect of homogenizing light. Specifically, the implementation of the diffusion member 320 is not limited in the embodiment.

[0036] In the embodiment, the beam expander 340 plays a role of expanding the excitation light J1 in a single direction (the slow axis direction Y in the embodiment). As an implementation, the beam expander 340 can be a cylindrical lens. In the embodiment shown in the figure, the beam expander 340 is a plano-convex cylindrical lens, the convex surface of which is arranged to face the diffusion member 320 as the light entrance surface of the beam expander 340. In other possible embodiments, the beam expander 340 can also be a plano-concave cylindrical lens, the concave surface of which is arranged to face away from the diffusion member 320 as the light exit surface of the beam expander 340. Of course, the beam expander 340 can also be a meniscus cylindrical lens, the convex surface of which is arranged to face the diffusion member 320, and the concave surface of which is arranged to face away from the diffusion member 320. Figure 2

[0037] As another implementation, the beam expander 340 can be a diffractive optical element (DOE), an aspherical lens, etc. Specifically, the implementation of the beam expander 340 is not limited in the embodiment. It should be noted that, in the embodiment, the beam expander 340 is used to expand the excitation light J1 in a single direction (the slow axis direction Y in the embodiment). In other possible embodiments, the beam expander 340 can also be used to expand the excitation light J1 in two directions (the slow axis direction Y and the fast axis direction X in the embodiment). Figure 2 In the optical path schematic diagram shown in the figure, the beam expander 340 is a refractive beam expander; in other implementations, the beam expander 340 can also be a reflective beam expander.

[0038] In some possible embodiments, please refer to the description of the first aspect of the embodiment again. Figure 2 ​The homogenizing module 30 can further include a condenser 360 and a diverging lens 380, which are disposed on the side of the diffusion member 320 away from the beam expander 340 and are both located on the light path of the excitation light J1. The excitation light J1 passes through the condenser 360 and the diverging lens 380 in sequence and then is incident on the diffusion member 320. Specifically, by adjusting the positions of the condenser 360 and the diverging lens 380 on the light path, the focal position of the excitation light J1 can be changed to achieve different defocusing effects, so as to further homogenize the excitation light J1. For example, the condenser 360 can be a convex lens, such as a biconvex lens, a plano-convex lens, etc.; the diverging lens 380 can be a concave lens, such as a biconcave lens, a plano-concave lens, etc. The implementation of the condenser 360 and the diverging lens 380 is not limited in the present embodiment.

[0039] In the present embodiment, the excitation light source 10 is configured to generate excitation light J1, which can be laser light or LED light. Hereinafter, the excitation light J1 is taken as an example of laser light.

[0040] Referring to Figure 4 The excitation light source 10 can include a first laser array 120, a second laser array 140, and a light combiner 160. The first laser array 120 can include a plurality of first laser generators (not shown in the figure), which can be arranged in an M*N array. Each first laser generator is configured to generate a first sub-excitation light J11, so that the first laser array 120 can generate M*N first sub-excitation lights J11. Specifically, M and N are both positive integers greater than 1, for example, M*N can be 3*2, 5*3, etc.

[0041] The second laser array 140 can include a plurality of second laser generators (not shown in the figure), which can be arranged in a P*Q array. Each second laser generator is configured to generate a second sub-excitation light J12, so that the second laser array 140 can generate P*Q second sub-excitation lights J12. Specifically, P and Q are both positive integers greater than 1, for example, P*Q can be 3*2, 5*3, etc.

[0042] As an implementation, the first sub-excitation light J11 and the second sub-excitation light J12 are both blue laser light. The wavelengths of the first sub-excitation light J11 and the second sub-excitation light J12 can be equal or not equal, which is not limited in the present embodiment.

[0043] The light combining member 160 is arranged on the light path of the M*N first sub excitation light J11 and on the light path of the P*Q second sub excitation light J12, and is configured to combine the M*N first sub excitation light J11 and the P*Q second sub excitation light J12 to form the excitation light J1. Therefore, the excitation light J1 in the embodiment is formed by combining the multiple first sub excitation light J11 and the multiple second sub excitation light J12, which can improve the energy intensity of the excitation light J1 and ensure the excitation efficiency of the specified fluorescent light F.

[0044] In some possible embodiments, the light combining member 160 combines the M*N first sub excitation light J11 and the P*Q second sub excitation light J12 by wavelength combination. Referring to Figure 5 , the light combining member 160 is provided with a plurality of transmission regions 1610 and a plurality of reflection regions 1630, and the plurality of transmission regions 1610 and the plurality of reflection regions 1630 are arranged in sequence and at intervals. That is, one reflection region 1630 is arranged between two transmission regions 1610, and one transmission region 1610 is arranged between two reflection regions 1630. The plurality of transmission regions 1610 are arranged on the light path of the M*N first sub excitation light J11 and are configured to transmit the M*N first sub excitation light J11; and the plurality of reflection regions 1630 are arranged on the light path of the P*Q second sub excitation light J12 and are configured to reflect the P*Q second sub excitation light J12.

[0045] As an implementation, the light combining member 160 can include a transparent substrate (for example, a glass plate) and a plurality of reflection layers, and the plurality of reflection layers can be arranged in sequence and at intervals on the same side of the transparent substrate to form the plurality of reflection regions 1630. The region of the transparent substrate without the reflection layer can be regarded as a “transmission region 1610”.

[0046] Specifically, the number of the transmission regions 1610 can be determined based on the arrangement mode of the light spots of the first sub excitation light J11. In Figure 5 , the light spots of the first sub excitation light J11 are arranged in a 3*2 array, that is, there are two columns, and each column has three light spots of the first sub excitation light J11. Therefore, the number of the transmission regions 1610 can be two, and each transmission region 1610 is arranged on the light path of three first sub excitation light J11, so that the three first sub excitation light J11 in a single column can be incident on the corresponding transmission region 1610. Similarly, the number of the reflection regions 1630 can be determined based on the arrangement mode of the light spots of the second sub excitation light J12. In Figure 5In the embodiment, the second sub-excitation light J12 is arranged in a 3*2 array, i.e., two columns, each column having three second sub-excitation light J12. Therefore, the number of the reflection regions 1630 can be two, each reflection region 1630 is arranged on the light path of the three second sub-excitation light J12, so that the single column of three second sub-excitation light J12 can be incident on the corresponding reflection region 1630.

[0047] Please refer again to Figure 4 The excitation light source 10 can further include a heat dissipation member 180 and a reflection member 190. The first laser array 120 and the second laser array 140 are integrated on the same side of the heat dissipation member 180, so that the M*N first sub-excitation light J11 and the P*Q second sub-excitation light J12 are emitted in the same direction. Specifically, the heat dissipation member 180 can be a metal (e.g., copper, aluminum, alloy, etc.) substrate. The embodiment integrates the first laser array 120 and the second laser array 140 on the same heat dissipation member 180, which, on the one hand, facilitates simultaneous heat dissipation of the two laser arrays, thereby improving the heat dissipation efficiency of the excitation light source 10. On the other hand, integrating the two laser arrays can also reduce the installation and debugging difficulty of the light path, which is conducive to the integration design of the excitation light source 10.

[0048] The reflection member 190 is arranged on the light path of the P*Q second sub-excitation light J12, which is used to reflect the P*Q second sub-excitation light J12 to the light combining member 160, so that the P*Q second sub-excitation light J12 can be successfully combined subsequently. Specifically, the reflection member 190 can be a mirror.

[0049] In the embodiment, the wavelength conversion module 50 is arranged on the light path of the expanded beam excitation light J2, which is used to generate the specified fluorescence F under the excitation of the expanded beam excitation light J2. It is not difficult to understand that, in the case that the expanded beam excitation light J2 has uniform spot energy distribution, the specified fluorescence F also has uniform spot energy distribution. Therefore, the lighting device 200 configured with the light source device 100 can be applied in lighting scenes with uniform spot requirements, which can improve the product competitiveness of the lighting device 200.

[0050] In some possible embodiments, the wavelength conversion module 50 can adopt a transmissive light path architecture, so that the overall light path structure of the light source device 100 is more simple and compact.

[0051] In other possible embodiments, the wavelength conversion module 50 can adopt a reflective light path architecture to improve the excitation efficiency of the specified fluorescence F. Please refer to Figure 6The light source device 100 can further include a light splitting member 60, which is disposed between the light homogenizing module 30 and the wavelength conversion module 50 and located on a light path of the expanded excitation light J2, and is configured to transmit the expanded excitation light J2.

[0052] The wavelength conversion module 50 and the light homogenizing module 30 are respectively disposed on opposite sides of the light splitting member 60. The wavelength conversion module 50 can include a wavelength conversion member 520, which is configured to generate specified fluorescent light F under excitation of the expanded excitation light J2 and reflect the specified fluorescent light F to the light splitting member 60. The light splitting member 60 is further configured to reflect the specified fluorescent light F.

[0053] Specifically, the specified fluorescent light F can be yellow fluorescent light, and the surface of the light splitting member 60 can be coated with a light splitting film (for example, a blue-transmitting and yellow-reflecting film). The wavelength conversion member 520 can be a fluorescent ceramic sheet (for example, a yellow fluorescent ceramic sheet), and the side of the fluorescent ceramic sheet facing away from the light splitting member 60 can be coated with a reflecting film to reflect the specified fluorescent light F to the light splitting member 60.

[0054] In some possible embodiments, the wavelength conversion module 50 can further include a first collection lens 540, which is disposed between the wavelength conversion member 520 and the light splitting member 60 and located on a light path of the specified fluorescent light F, and is configured to collect and concentrate the specified fluorescent light F to improve the energy utilization efficiency of the specified fluorescent light F. Specifically, the first collection lens 540 can be a convex lens, for example, a plano-convex lens, a biconvex lens, or the like. The number of the first collection lens 540 can be one or more, which is not limited in the embodiment.

[0055] It should be noted that, since the surface of the light splitting member 60 is coated with a light splitting film, the transmittance of the light splitting film to the expanded excitation light J2 cannot reach 100%, for example, the transmittance is 80%, 85%, or the like. Therefore, the light splitting film will reflect part of the expanded excitation light J2. Specifically, in the embodiment, Figure 6 The light splitting member 60 is configured to transmit part of the expanded excitation light J2 to form a first light path A1, and the wavelength conversion member 520 is disposed on the first light path A1. The light splitting member 60 is further configured to reflect another part of the expanded excitation light J2 to form a second light path A2.

[0056] In some possible embodiments, to improve the energy utilization efficiency of the expanded excitation light J2, the light source device 100 can further include a scattering reflection module 70, which is disposed on the second light path A2 and is configured to scatter and then reflect the other part of the expanded excitation light J2 to the light splitting member 60 to realize collection and reuse of the other part of the expanded excitation light J2. The light splitting member 60 is further configured to transmit the other part of the expanded excitation light J2 and combine the other part of the expanded excitation light J2 with the specified fluorescent light F to form the illumination light L.

[0057] In some possible embodiments, the scattering reflection module 70 can include a scattering reflection member 720, where the scattering reflection member 720 can be a scattering member plated with a reflection layer on a side of the scattering member facing away from the light splitting member 60, so that the other part of the expanded excitation light J2 is incident to the light splitting member 60 again via the scattering member, the reflection layer, and the scattering member in sequence. Therefore, the scattering reflection member 720 in this embodiment can scatter the other part of the expanded excitation light J2 twice, and can expand the spot size of the other part of the expanded excitation light J2 to match the spot size of the specified fluorescence F, so as to ensure that the other part of the expanded excitation light J2 can successfully combine with the specified fluorescence F.

[0058] In some possible embodiments, the scattering reflection module 70 can further include a second collection lens 740, which is arranged between the scattering reflection member 720 and the light splitting member 60 and located on an optical path of the other part of the expanded excitation light J2, and is configured to collect and converge the other part of the expanded excitation light J2, so as to improve the energy utilization efficiency of the expanded excitation light J2. Specifically, the second collection lens 740 can be a convex lens, for example, a plano-convex lens, a biconvex lens, or the like. The number of the second collection lens 740 can be one or more, which is not specifically limited in this embodiment.

[0059] In some possible embodiments, the light source device 100 can further include a condenser lens 810 and an optical fiber 830, which are arranged on an optical path of the illumination light L in sequence, and the illumination light L is coupled into the optical fiber 830 after being converged by the condenser lens 810. Due to the converging effect of the condenser lens 810, the spot size of the illumination light L can be reduced, so that the illumination light L can be coupled into the optical fiber 830 smoothly and efficiently.

[0060] Specifically, the condenser lens 810 can be a convex lens, for example, a plano-convex lens, a biconvex lens, or the like. The number of the condenser lens 810 can be one or more, which is not specifically limited in this embodiment. The optical fiber 830 can be a quartz optical fiber, a multi-component glass optical fiber, a plastic optical fiber, a composite material optical fiber, or the like. The coupling-in end of the optical fiber 830 can be arranged on the focal point of the condenser lens 810, and the coupling-out end of the optical fiber 830 can be arranged opposite to the light outlet 2010 of the housing 201, so that the illumination light L can be emitted to the outside smoothly.

[0061] It is not difficult to understand here that since the spot energy distributions of the specified fluorescent light F and the expanded-beam excitation light J2 are both uniform, the spot energy distribution of the illumination light L formed after the combination of the two is also uniform, and the spot energy distribution of the illumination light L emitted after being converged by the condenser lens 810 is also uniform. Therefore, in the case that the illumination light L can be coupled into the optical fiber 830 efficiently, the situation that the local spot area energy of the illumination light L is too large to exceed the tolerable power density of the optical fiber 830 and thus burn the optical fiber 830 can be avoided, so as to ensure the service life of the optical fiber 830.

[0062] The embodiment of the present application provides a light source device 100 and a lighting apparatus 200 provided with the light source device 100, and the light source device 100 can include an excitation light source 10, a uniform light module 30 and a wavelength conversion module 50. The excitation light source 10 is used to generate excitation light J1, and the excitation light J1 has a fast axis direction X and a slow axis direction Y, and the fast axis direction X and the slow axis direction Y are perpendicular to each other. Since the divergence angle of the excitation light J1 in the fast axis direction X is greater than the divergence angle of the excitation light J1 in the slow axis direction Y, the size of the spot of the excitation light J1 in the fast axis direction X is greater than the size of the spot in the slow axis direction Y.

[0063] The uniform light module 30 can include a diffusion member 320 and an expansion member 340, and the diffusion member 320 and the expansion member 340 are sequentially arranged on the light path of the excitation light J1. In the slow axis direction Y, the expansion member 340 is used to expand the beam of the excitation light J1 scattered by the diffusion member 320 to form expanded-beam excitation light J2. The wavelength conversion module 50 is arranged on the light path of the expanded-beam excitation light J2, and is used to generate specified fluorescent light F under the excitation of the expanded-beam excitation light J2.

[0064] In one aspect, the diffusion member 320 in the uniform light module 30 can scatter and homogenize the whole excitation light J1, and the expansion member 340 can expand and homogenize the excitation light J1, so that the spot energy distribution of the expanded-beam excitation light J2 emitted by the expansion member 340 can be more uniform, and it is ensured that the expanded-beam excitation light J1 can excite more specified fluorescent light F under the tolerable power density of the wavelength conversion module 50, so as to improve the excitation efficiency of the specified fluorescent light F.

[0065] In another aspect, the expansion member 340 can increase the scattering angle of the excitation light J1 in the slow axis direction Y, so as to expand the size of the spot of the excitation light J1 in the slow axis direction Y. Therefore, when the expanded excitation light J1 (i.e., the expanded-beam excitation light J2) is incident on the wavelength conversion module 50, the corresponding spot area can be larger, so that the spot of the expanded-beam excitation light J2 can cover more areas on the wavelength conversion module 50, further improving the excitation efficiency of the specified fluorescent light F.

[0066] In this specification, certain terms are used to refer to particular units. As one of ordinary skill in the art will understand, different manufacturers can refer to a certain component by different names and / or different numbering schemes. Reference to a certain term in this specification is not intended to limit the component to which the term refers to particular units, but is intended to cover all components with equivalent functionality. As used in the specification and in the claims, the phrase "comprises" and variations thereof, such as "comprising" and "comprises," means "including but not limited to," and is intended to cover a non-exclusive inclusion. "Consisting essentially of" means including the elements listed after the term, and any other elements that do not materially affect the basic and novel characteristics of the composition or method. "Consisting of" means including the elements listed after the term, and no other elements.

[0067] In the description of the present application, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only used to simplify the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0068] In this application, unless otherwise clearly specified or limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be internal communication of two elements, or it can be only surface contact. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0069] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the characteristics of different embodiments or examples without contradiction.

[0070] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements 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 the present application.

Claims

1. A light source apparatus, characterized by comprising: The application relates to a light source device. The light source device comprises: an excitation light source for generating excitation light, the excitation light having a fast-axis direction and a slow-axis direction; a uniform light module comprising a diffusion member and a beam expander, the diffusion member and the beam expander being sequentially arranged on an optical path of the excitation light; wherein, in the slow-axis direction, the beam expander is used for expanding the excitation light scattered by the diffusion member to form expanded excitation light; and a wavelength conversion module arranged on an optical path of the expanded excitation light, used for generating specified fluorescence under excitation of the expanded excitation light. The beam expander is a cylindrical lens; and the expanded excitation light is a flat-top beam in both the fast-axis direction and the slow-axis direction. The uniform light module further comprises a condenser and a diffuser, the condenser and the diffuser being arranged on a side of the diffusion member away from the beam expander and located on the optical path of the excitation light; wherein the excitation light sequentially passes through the condenser and the diffuser and then is incident on the diffusion member. The excitation light source comprises a first laser array, a second laser array and a light combiner; wherein the first laser array is used for generating M*N first sub-excitation light, and the second laser array is used for generating P*Q second sub-excitation light.

2. The light source apparatus according to claim 1, wherein The light combiner is arranged on an optical path of the M*N first sub-excitation light and on an optical path of the P*Q second sub-excitation light, and is used for combining the M*N first sub-excitation light and the P*Q second sub-excitation light to form the excitation light.

3. The light source apparatus according to claim 1, wherein The excitation light source further comprises a heat sink and a reflector; the first laser array and the second laser array are integrated on the same side of the heat sink, so that the M*N first sub-excitation light and the P*Q second sub-excitation light are emitted in the same direction.

4. The light source apparatus according to any one of claims 1 to 3, wherein The reflector is arranged on an optical path of the P*Q second sub-excitation light and is used for reflecting the P*Q second sub-excitation light to the light combiner. The light combiner is provided with a plurality of transmission regions and a plurality of reflection regions, and the plurality of transmission regions and the plurality of reflection regions are sequentially and spacedly arranged.

5. The light source apparatus according to claim 4, wherein The plurality of transmission regions are arranged on an optical path of the M*N first sub-excitation light and are used for transmitting the M*N first sub-excitation light; and the plurality of reflection regions are arranged on an optical path of the P*Q second sub-excitation light and are used for reflecting the P*Q second sub-excitation light. The light source device further comprises a light splitter arranged between the uniform light module and the wavelength conversion module and located on an optical path of the expanded excitation light, and the light splitter is used for transmitting the expanded excitation light.

6. The light source apparatus according to claim 4, wherein The wavelength conversion module comprises a wavelength conversion member, which generates the specified fluorescence under excitation of the expanded excitation light and reflects the specified fluorescence to the light splitter; and the light splitter is also used for reflecting the specified fluorescence. The light splitter is used for transmitting a part of the expanded excitation light to form a first optical path and reflecting another part of the expanded excitation light to form a second optical path; and the wavelength conversion member is arranged on the first optical path.

7. The light source apparatus according to any one of claims 1 to 3, wherein ​ ​ 8. The light source apparatus according to claim 7, wherein ​ The light source device further comprises a scattering reflection module arranged on the second light path and configured to scatter and then reflect another part of the expanded and collimated excitation light to the light splitting member; The light splitting member is further configured to transmit another part of the expanded and collimated excitation light and combine the transmitted light with the specified fluorescence to form illumination light.

9. The light source apparatus according to claim 8, wherein The light source device further comprises a condenser lens and an optical fiber, the condenser lens and the optical fiber are arranged in sequence on a light path of the illumination light, and the illumination light is coupled into the optical fiber after being converged by the condenser lens.

10. An illumination device, characterized by Comprise: a housing; and The light source device according to any one of claims 1 to 9 is arranged in the housing.

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