Light source device and lighting equipment
By using a homogenizing module with polygonal and circular light-monopolating rods in lighting equipment to homogenize the laser light, the problem of poor light homogenization effect of lighting fixtures is solved, and high-quality lighting effect is achieved.
Patent Information
- Application Number
- CN202520520949.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing lighting fixtures suffer from poor light uniformity.
A homogenizing module including a first homogenizing rod and a second homogenizing rod is adopted. The first homogenizing rod and the second homogenizing rod are arranged sequentially on the laser light path, and one of them is a polygonal homogenizing rod and the other is a circular homogenizing rod. The polygonal homogenizing rod homogenizes the surface distribution of the specified laser, and the circular homogenizing rod homogenizes the diagonal distribution, thereby improving the homogenizing effect.
It improves the uniformity of the specified laser light, making the lighting equipment more effective in scenarios where the quality of the lighting light is critical.
Smart Images
Figure CN223807060U_ABST
Abstract
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, in order to improve the overall brightness of the lighting light, a technical scheme of wavelength light mixing by using red, green and blue three-color lasers is usually adopted.
[0003] However, the existing lighting lamps have the problem of poor light uniformity of the lighting light. 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 a laser light source and a light uniformity module. The laser light source is configured to generate specified laser light. The light uniformity module comprises a first light uniformity rod and a second light uniformity rod. The first light uniformity rod and the second light uniformity rod are arranged in sequence on a light path of the specified laser light, so that the specified laser light is emitted after being uniformly lightened by the first light uniformity rod and the second light uniformity rod in sequence. One of the first light uniformity rod and the second light uniformity rod is a polygonal light uniformity rod, and the other is a circular light uniformity rod.
[0006] In some possible embodiments, the first light uniformity rod is a polygonal light uniformity rod, and the second light uniformity rod is a circular light uniformity rod.
[0007] In some possible embodiments, a long side of a light spot corresponding to the specified laser light matches a longest diagonal line of a polygonal cross section corresponding to the first light uniformity rod.
[0008] In some possible embodiments, an outer contour of the polygonal cross section corresponding to the first light uniformity rod circumscribes an outer contour of a circular cross section corresponding to the second light uniformity rod.
[0009] In some possible embodiments, the light uniformity module further comprises a diaphragm member. The diaphragm member is arranged on a side of the second light uniformity rod away from the first light uniformity rod. The diaphragm member comprises a plurality of diaphragms. The plurality of diaphragms are switchably arranged on a light path of the specified laser light emitted through the second light uniformity rod. The plurality of diaphragms have different shapes.
[0010] In some possible embodiments, the second light uniformity rod is a circular light uniformity rod. The plurality of diaphragms comprise a circular diaphragm. An aperture of the circular diaphragm matches an aperture of the circular cross section corresponding to the second light uniformity rod.
[0011] In some possible embodiments, the light uniformity module further includes a first scattering sheet and a second scattering sheet. The first scattering sheet is arranged between the laser light source and the first light uniformity rod and located on the light path of the specified laser light. The second scattering sheet is arranged between the second light uniformity rod and the diaphragm and located on the light path of the specified laser light.
[0012] In some possible embodiments, the laser light source includes a red laser unit, a green laser unit, a blue laser unit and a light combining unit. The red laser unit is configured to generate red laser light. The green laser unit is configured to generate green laser light. The blue laser unit is configured to generate blue laser light. The light combining unit is configured to combine the red laser light, the green laser light and the blue laser light to generate the specified laser light.
[0013] In some possible embodiments, the laser light source further includes a focusing lens. The focusing lens is arranged between the light combining unit and the first light uniformity rod and located on the light path of the specified laser light. The optical path of the red laser light between the red laser unit and the focusing lens is shorter than the optical path of the green laser light between the green laser unit and the focusing lens. The optical path of the green laser light between the green laser unit and the focusing lens is shorter than the optical path of the blue laser light between the blue laser unit and the focusing lens.
[0014] In some possible embodiments, the light combining unit includes a reflecting element, a first light combining element and a second light combining element. The reflecting element is arranged on the light path of the blue laser light and configured to reflect the blue laser light. The first light combining element is arranged on the light path of the green laser light and the blue laser light reflected by the reflecting element and configured to reflect the green laser light and transmit the blue laser light to form specified combined light. The second light combining element is arranged on the light path of the red laser light and the specified combined light and configured to reflect the specified combined light and transmit the red laser light to form the specified laser light.
[0015] According to a second aspect of the present application, an embodiment of the present application further provides a lighting device. The lighting device includes a housing and the light source device described above. The light source device is arranged in the housing.
[0016] The light source device and the lighting device provided by the embodiments of the present application include a laser light source and a light uniformity module. The light uniformity module includes a first light uniformity rod and a second light uniformity rod. The first light uniformity rod and the second light uniformity rod are arranged in sequence on the light path of the specified laser light generated by the laser light source and are configured to emit the specified laser light after uniformity processing. Since the two light uniformity rods are used to perform uniformity processing on the specified laser light, the uniformity processing effect of the specified laser light can be improved. Therefore, the lighting device configured with the light source device can be applied to a lighting scene with high requirements for lighting light quality.
[0017] Specifically, one of the first light uniformization rod and the second light uniformization rod is a polygonal light uniformization rod, and the other is a circular light uniformization rod. Among them, the polygonal light uniformization rod can uniformize the surface distribution of the specified laser, and the circular light uniformization rod can uniformize the angular distribution of the specified laser. Therefore, the light uniformization module in the present application can uniformize the surface distribution and the angular distribution of the specified laser respectively, so that the specified laser has a higher light uniformization quality. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used 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 is a structural schematic diagram of the lighting device provided by the embodiments of the present application.
[0020] Figure 2 is Figure 1 is a light path structure schematic diagram of the light source device in the lighting device shown.
[0021] Figure 3 is Figure 2 is a light path structure schematic diagram of the laser light source in the light source device shown.
[0022] Figure 4 is Figure 2 is a projection schematic diagram of the spot of the specified laser, the polygonal cross section of the polygonal light uniformization rod and the circular edge cross section of the circular light uniformization rod.
[0023] Figure 5 is Figure 1 is another light path structure schematic diagram of the light source device in the lighting device shown.
[0024] Figure 6 is Figure 5 is a schematic diagram of the diaphragm element in the light source device shown. DETAILED DESCRIPTION
[0025] In order to make those skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0026] The light source device 100 and the lighting device 200 provided with the light source device 100 are provided in the embodiments of the present application, wherein the lighting device 200 refers to a device for lighting by using laser, for example, the lighting device 200 can be a laser stage light, a laser flashlight, a laser projection light, etc.
[0027] Referring to Figure 1 The lighting device 200 can include a housing 201 and the light source device 100, and 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 the specified laser 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] In other possible embodiments, the specified laser L generated by the light source device 100 can also be used as excitation light of fluorescence, in which case the lighting light generated by the lighting device 200 can be mixed light of the specified laser L and fluorescence.
[0029] Referring to Figure 2 The light source device 100 can include a laser light source 10 and a light homogenization module 20. The laser light source 10 is used to generate the specified laser L. The light homogenization module 20 can include a first light homogenization rod 210 and a second light homogenization rod 230, and the first light homogenization rod 210 and the second light homogenization rod 230 are arranged in sequence on a light path of the specified laser L, so that the specified laser L is emitted after being homogenized by the first light homogenization rod 210 and the second light homogenization rod 230 in sequence. One of the first light homogenization rod 210 and the second light homogenization rod 230 is a polygonal light homogenization rod, and the other is a circular light homogenization rod.
[0030] Since two light homogenization rods are used to homogenize the specified laser L in the embodiment, the homogenization effect of the specified laser L can be improved, so that the lighting device 200 provided with the light source device 100 can be applied to lighting scenes with high requirements on the quality of lighting light.
[0031] Specifically, one of the first light homogenization rod 210 and the second light homogenization rod 230 is a polygonal light homogenization rod, and the other is a circular light homogenization rod. The polygonal light homogenization rod can homogenize the surface distribution of the specified laser L, and the circular light homogenization rod can homogenize the angular distribution of the specified laser L. Therefore, the light homogenization module 20 in the present application can homogenize the surface distribution and the angular distribution of the specified laser L respectively, so that the specified laser L has high light homogenization quality.
[0032] The specific implementation of the light source device 100 will be introduced below.
[0033] In the embodiment, the laser light source 10 is configured to generate the specified laser light L. In some possible embodiments, the laser light source 10 can be a monochromatic laser, such that the specified laser light L generated thereby is monochromatic laser light, for example, blue laser light, green laser light, or the like. In this case, the specified laser light L generated by the light source device 100 can not only serve as illumination light, but also as excitation light for fluorescence, so as to enrich the application scenarios of the light source device 100.
[0034] In some other possible embodiments, the laser light source 10 can include a plurality of monochromatic lasers, such that the specified laser light L generated thereby is light composed of a plurality of monochromatic lasers, so as to make the color of the specified laser light L more diverse.
[0035] Referring to Figure 3 , the laser light source 10 can include a red laser unit 120, a green laser unit 140, a blue laser unit 160, and a light combining unit 180. The red laser unit 120 is configured to generate red laser light L1, the green laser unit 140 is configured to generate green laser light L2, and the blue laser unit 160 is configured to generate blue laser light L3.
[0036] Specifically, each laser unit can include a plurality of lasers, which can be arranged in an M*N array. In some possible embodiments, the red laser unit 120, the green laser unit 140, and the blue laser unit 160 have the same number of lasers and the same laser arrangement manner, such that the red laser light L1, the green laser light L2, and the blue laser light L3 have the same light emitting aperture (i.e., the same surface distribution), so as to ensure that the subsequent light combining can be successfully performed to generate the specified laser light L.
[0037] In the embodiment, the light combining unit 180 is configured to combine the red laser light L1, the green laser light L2, and the blue laser light L3, so as to generate the specified laser light L. Therefore, by adjusting the energy intensity of the red laser light L1, the green laser light L2, and the blue laser light L3, the color of the specified laser light L can be adjusted, so as to enrich the illumination effect of the light source device 100. Specifically, the red laser light L1, the green laser light L2, and the blue laser light L3 are combined by wavelength combining.
[0038] In Figure 3In the illustrated embodiment, red laser unit 120, green laser unit 140, and blue laser unit 160 are arranged sequentially at intervals. As one implementation, the laser source 10 may further include a support member (not shown in the figure), and the red laser unit 120, green laser unit 140, and blue laser unit 160 may be sequentially fixedly disposed on the same side of the support member, so that the red laser L1, green laser L2, and blue laser L3 are emitted in the same direction. Specifically, the support member may be made of a metallic material (e.g., copper, aluminum, stainless steel, etc.) to achieve centralized heat dissipation for the red laser unit 120, green laser unit 140, and blue laser unit 160.
[0039] Specifically, the beam combining unit 180 may include a reflector 1810, a first beam combining member 1830, and a second beam combining member 1850. The reflector 1810 is disposed in the optical path containing the blue laser L3 and is used to reflect the blue laser L3. For example, the reflector 1810 may be a blue light reflector. The first beam combining member 1830 is disposed in the optical path containing the green laser L2 and the blue laser L3 reflected by the reflector 1810. It is used to reflect the green laser L2 and transmit the blue laser L3 to form a designated beam combining L23. For example, the first beam combining member 1830 may be a blue-transmitting, green-reflecting mirror. The second beam combining member 1850 is disposed in the optical path containing the red laser L1 and the designated beam combining L23. It is used to reflect the designated beam combining L23 and transmit the red laser L1 to form a designated laser L. For example, the second beam combining member 1850 may be a red-transmitting, blue-reflecting, green-reflecting mirror.
[0040] It should be noted that, when the laser L is designated as white light, the green laser L2, compared to the blue laser L3, has a lower required brightness ratio in white light than its maximum output brightness, and the reflection efficiency of the first light combiner 1830 is higher than its transmission efficiency. Therefore, in this embodiment, the first light combiner 1830 reflects the green laser L2 and transmits the blue laser L3, resulting in a more reasonable brightness ratio between the green laser L2 and the blue laser L3 in white light.
[0041] exist Figure 3 In the illustrated embodiment, the laser source 10 may further include a focusing lens 190, which is disposed between the beam combining unit 180 and the first beam homogenizing rod 210, and located in the optical path of the designated laser L. Specifically, the focusing lens 190 can converge and compress the designated laser L, thereby reducing the spot size corresponding to the designated laser L, so that the subsequent designated laser L can be smoothly coupled into the first beam homogenizing rod 210, thereby improving the light transmission efficiency of the designated laser L. Exemplarily, the focusing lens 190 may be a convex lens (e.g., a biconvex lens, a plano-convex lens, etc.), and the number of focusing lenses 190 may be one or more, which is not limited in this embodiment.
[0042] It can be found that, in the case where the laser light source 10 adopts the light combination mode as shown in FIG. 1B, the optical path of the red laser L1 between the red laser unit 120 and the focusing lens 190 is shorter than the optical path of the green laser L2 between the green laser unit 140 and the focusing lens 190; the optical path of the green laser L2 between the green laser unit 140 and the focusing lens 190 is shorter than the optical path of the blue laser L3 between the blue laser unit 160 and the focusing lens 190. Figure 3
[0043] The "optical path of the XX laser between A and B" described above can be understood as the propagation distance of the XX laser between A and B. Since the divergence angle of the red laser L1 is large, the optical etendue dilution is also large when the propagation distance of the red laser L1 is large. Therefore, the optical path of the red laser L1 in the embodiment is the shortest, so as to reduce the optical etendue of the red laser L1 and ensure the energy utilization efficiency of the red laser L1. Further, since the luminance margin of the blue laser L3 is large, the blue laser L3 can accept more light combination loss. Therefore, the optical path of the blue laser L3 in the embodiment is the longest.
[0044] In summary, when the light combination unit 180 performs wavelength light combination, the laser scattering angle, the transmission and reflection efficiency of the optical element, and the matching luminance of the three colors of light in the white light are comprehensively considered, so as to ensure the energy intensity of the specified laser L.
[0045] Of course, other arrangement orders of the red laser unit 120, the green laser unit 140, and the blue laser unit 160 can also be adopted, in which case the transmission and reflection characteristics of the light combination elements in the light combination unit 180 can be adjusted accordingly, which is not limited in the embodiment.
[0046] In the embodiment, the light homogenization module 20 is arranged on the optical path of the specified laser L emitted by the laser light source 10, and is used for homogenizing the specified laser L, adjusting the energy distribution intensity of the corresponding light spot of the specified laser L, and eliminating the speckle in the specified laser L, so as to improve the light quality of the specified laser L. Specifically, the light homogenization module 20 can include a first light homogenization rod 210 and a second light homogenization rod 230.
[0047] In some possible embodiments, the first light homogenization rod 210 is a polygonal light homogenization rod (for example, a hexagonal light homogenization rod, an octagonal light homogenization rod, or the like), and the second light homogenization rod 230 is a circular light homogenization rod, so that the specified laser L is sequentially emitted after passing through the polygonal light homogenization rod and the circular light homogenization rod. Specifically, the polygonal light homogenization rod can homogenize the surface distribution of the specified laser L and polygonalize the angular distribution of the specified laser L. For example, in the case where the polygonal light homogenization rod is a hexagonal light homogenization rod, the angular distribution of the specified laser L emitted after passing through the hexagonal light homogenization rod becomes hexagonal.
[0048] The circular homogenizing rod can homogenize (i.e., circularize) the angular distribution of the specified laser L. Specifically, the polygonal angular distribution can be homogenized into a circular angular distribution. Meanwhile, the circular homogenizing rod can also increase the energy intensity (i.e., illuminance) at the middle position of the surface distribution, so that the surface distribution and the angular distribution of the specified laser L emitted successively via the polygonal homogenizing rod and the circular homogenizing rod are both homogenized into a circular shape, and the energy intensity at the middle position of the surface distribution is greater than the energy intensity at the peripheral position of the surface distribution, which can increase the central illuminance of the specified laser L.
[0049] Further, since the surface distribution and the angular distribution of the specified laser L are both circular, the exit area of the circular homogenizing rod can be equivalent to an aperture stop, so that there is no need to set an additional aperture stop to "cut" the surface distribution of the specified laser L into a circular shape in the subsequent optical path. On the one hand, the luminance loss of the specified laser L can be reduced, and the energy transmission efficiency of the specified laser L can be ensured; on the other hand, the hardware cost of the light source device 100 can be reduced, which is conducive to the miniaturization and compact design of the light source device 100.
[0050] In some other possible embodiments, the first homogenizing rod 210 is a circular homogenizing rod, and the second homogenizing rod 230 is a polygonal homogenizing rod, so that the specified laser L is emitted successively via the circular homogenizing rod and the polygonal homogenizing rod. Specifically, the specified laser L in the present embodiment has the same homogenizing effect as the specified laser L emitted successively via the polygonal homogenizing rod and the circular homogenizing rod in the above description, and thus will not be described in detail here. In the following description, the first homogenizing rod 210 is taken as a polygonal homogenizing rod, and the second homogenizing rod 230 is taken as a circular homogenizing rod.
[0051] In the present embodiment, the spot shape of the specified laser L emitted by the laser light source 10 is approximately a long strip shape, which can be approximated as a rectangular spot in Figure 4 . Please refer to Figure 4 , the long side B1 of the spot of the specified laser L emitted by the laser light source 10 matches the longest diagonal line B2 of the polygonal cross section (the hexagonal cross section in Figure 4 ) corresponding to the first homogenizing rod 210. Here, "A and B match" can be understood as the length of A being equal to the length of B, or the ratio between the length of A and the length of B being greater than or equal to 0.9 and less than or equal to 1.1.
[0052] Therefore, the specified laser L in the present embodiment can be fully coupled into the first homogenizing rod 210, so as to ensure the energy transmission efficiency of the specified laser L. Meanwhile, the problem of the hardware size of the first homogenizing rod 210 being too large can also be avoided, which is conducive to the miniaturization and compact design of the light source device 100.
[0053] In some possible embodiments, the outer contour of the polygonal cross section corresponding to the first homogenizing rod 210 circumscribes the outer contour of the circular cross section corresponding to the second homogenizing rod 230. Thus, the cross-sectional area corresponding to the first homogenizing rod 210 and the cross-sectional area corresponding to the second homogenizing rod 230 are substantially equal in the present embodiment, so as to ensure that the specified laser L can be fully coupled from the first homogenizing rod 210 to the second homogenizing rod 230, thereby ensuring the energy transmission efficiency of the specified laser L. Of course, in other possible embodiments, the size of the area of the polygonal cross section and the size of the area of the circular cross section can also be determined based on the distance between the first homogenizing rod 210 and the second homogenizing rod 230, which is not limited in the present embodiment.
[0054] Referring to Figure 5 and Figure 6 In some possible embodiments, the homogenizing module 20 further comprises a diaphragm 250, which is arranged on the side of the second homogenizing rod 230 away from the first homogenizing rod 210. The diaphragm 250 can include a plurality of diaphragms 2520, which are switchably arranged on the light path of the specified laser L emitted via the second homogenizing rod 230, and the shapes of the plurality of diaphragms 2520 are different. Specifically, the diaphragm 250 can be a rotatable diaphragm disc, and the plurality of diaphragms 2520 are integrated on the diaphragm disc and are sequentially and spaced arranged on the outer periphery of the rotation center O. Thus, by rotating the diaphragm disc, any one of the plurality of diaphragms 2520 can be selectively located on the light path of the specified laser L.
[0055] It should be noted that, in the case that the diaphragm 2520 is a polygonal diaphragm (for example, a triangular diaphragm, a pentagonal diaphragm, etc.), the light spot of the specified laser L on the diaphragm 250 covers the through hole region of the diaphragm 2520, so that the light spot of the specified laser L can be "cut" into different shapes under the action of different diaphragms 2520, so as to make the beam shape of the specified laser L more diverse.
[0056] In some possible embodiments, the second homogenizing rod 230 is a circular homogenizing rod, and the plurality of diaphragms 2520 can include a circular diaphragm 2521, and the aperture of the circular diaphragm 2521 matches the aperture of the circular cross section corresponding to the second homogenizing rod 230. For example, the aperture of the circular diaphragm 2521 can be equal to the aperture of the circular cross section corresponding to the second homogenizing rod 230, or the aperture of the circular diaphragm 2521 can be slightly larger than the aperture of the circular cross section corresponding to the second homogenizing rod 230, so that the specified laser L can pass through the circular diaphragm 2521 smoothly, avoiding the case that the circular diaphragm 2521 "blocks" the specified laser L and causes brightness loss, so as to ensure the energy transmission efficiency of the specified laser L.
[0057] In some possible embodiments, the light homogenizing module 20 can further include a first diffusion sheet 270 and a second diffusion sheet 290. The first diffusion sheet 270 is arranged between the laser light source 10 and the first light homogenizing rod 210 and located on the light path of the specified laser L. The second diffusion sheet 290 is arranged between the second light homogenizing rod 230 and the diaphragm 250 and located on the light path of the specified laser L. Specifically, the diffusion angle of the specified laser L emitted by the first diffusion sheet 270 is less than or equal to 15 degrees, and the diffusion angle of the specified laser L emitted by the second light homogenizing rod 230 is less than or equal to 15 degrees.
[0058] Therefore, the first diffusion sheet 270 and the second diffusion sheet 290 in the embodiment can be small-angle diffusion sheets, which can further eliminate the tolerance of the optical elements in the light source device 100 due to materials or processes and improve the product manufacturing yield of the lighting apparatus 200 provided with the light source device 100 in the case of scattering and homogenizing the specified laser L.
[0059] In some possible embodiments, referring again to Figure 5 , the light source device 100 can further include a light condensing module 30 arranged on the light path of the specified laser L emitted via the light homogenizing module 20, which is configured to condense the light emitted by the light homogenizing module 20. Specifically, the light condensing module 30 can include one or more light condensing lenses 320, where the light condensing lens 320 can be a double-convex lens or a plano-convex lens. In the embodiment shown in Figure 5 , the number of light condensing lenses 320 is two, and the positions of the two light condensing lenses 320 can be adjusted to further adjust the focal length of the specified laser L, so as to enrich the application scenarios of the lighting apparatus 200 provided with the light source device 100.
[0060] The embodiment of the present application provides a light source device 100 and a lighting apparatus 200 provided with the light source device 100. The light source device 100 can include a laser light source 10 and a light homogenizing module 20. The laser light source 10 is configured to generate a specified laser L. The light homogenizing module 20 can include a first light homogenizing rod 210 and a second light homogenizing rod 230. The first light homogenizing rod 210 and the second light homogenizing rod 230 are arranged in sequence on the light path of the specified laser L, so that the specified laser L is emitted after being homogenized by the first light homogenizing rod 210 and the second light homogenizing rod 230 in sequence. One of the first light homogenizing rod 210 and the second light homogenizing rod 230 is a polygonal light homogenizing rod, and the other is a circular light homogenizing rod.
[0061] Since the embodiment uses two light homogenizing rods to homogenize the specified laser L, the homogenization effect of the specified laser L can be improved, so that the lighting apparatus 200 provided with the light source device 100 can be applied to lighting scenes with high requirements for the quality of lighting light.
[0062] Specifically, one of the first light homogenizing rod 210 and the second light homogenizing rod 230 is a polygonal light homogenizing rod, and the other is a circular light homogenizing rod. Among them, the polygonal light homogenizing rod can homogenize the surface distribution of the specified laser L, and the circular light homogenizing rod can homogenize the angular distribution of the specified laser L. Therefore, the light homogenizing module 20 in the present application can homogenize the surface distribution and the angular distribution of the specified laser L respectively, so that the specified laser L has a higher light homogenization quality.
[0063] In the present application, some terms are used in the specification and claims to refer to certain components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components by name, but by functional differences. As mentioned throughout the specification and claims, "including" is an open term, which should be interpreted as "including but not limited to"; "approximately" means that those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.
[0064] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside" and the like indicate the orientation or positional 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.
[0065] In the present application, unless otherwise expressly specified or limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood 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 the communication between two elements, or it can be only surface contact. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0066] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the 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, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0067] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "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, for example, two, three, etc., unless otherwise specifically limited.
[0068] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions out of 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 laser light source and a light homogenizing module. The laser light source comprises a laser light source for generating specified laser light; and a light homogenizing module comprising a first light homogenizing rod and a second light homogenizing rod, which are arranged in sequence on a light path of the specified laser light so that the specified laser light is homogenized by the first light homogenizing rod and the second light homogenizing rod in sequence and then emitted. One of the first light homogenizing rod and the second light homogenizing rod is a polygonal light homogenizing rod, and the other is a circular light homogenizing rod. The first light homogenizing rod is a polygonal light homogenizing rod, and the second light homogenizing rod is a circular light homogenizing rod. The long side of a light spot corresponding to the specified laser light emitted by the laser light source matches the longest diagonal of a polygonal cross section corresponding to the first light homogenizing rod.
2. The light source apparatus according to claim 1, wherein The outer contour of the polygonal cross section corresponding to the first light homogenizing rod circumscribes the outer contour of a circular cross section corresponding to the second light homogenizing rod.
3. The light source apparatus according to claim 2, wherein The light homogenizing module further comprises a diaphragm element arranged on a side of the second light homogenizing rod away from the first light homogenizing rod.
4. The light source apparatus according to claim 2, wherein The diaphragm element comprises a plurality of diaphragms which are switchably arranged on a light path of the specified laser light emitted by the second light homogenizing rod, and the shapes of the diaphragms are different.
5. The light source apparatus according to claim 1, wherein The second light homogenizing rod is a circular light homogenizing rod, and the plurality of diaphragms comprise a circular diaphragm, the aperture of the circular diaphragm matching the aperture of the circular cross section corresponding to the second light homogenizing rod. The light homogenizing module further comprises a first scattering sheet and a second scattering sheet, the first scattering sheet being arranged between the laser light source and the first light homogenizing rod and located on the light path of the specified laser light; and the second scattering sheet being arranged between the second light homogenizing rod and the diaphragm element and located on the light path of the specified laser light.
6. The light source apparatus according to claim 5, wherein The laser light source comprises a red laser unit, a green laser unit, a blue laser unit and a light combining unit, wherein the red laser unit is used for generating red laser light, the green laser unit is used for generating green laser light, and the blue laser unit is used for generating blue laser light.
7. The light source apparatus according to claim 5, wherein The light combining unit is used for combining the red laser light, the green laser light and the blue laser light to generate the specified laser light. The laser light source further comprises a focusing lens arranged between the light combining unit and the first light homogenizing rod and located on the light path of the specified laser light.
8. The light source apparatus according to any one of claims 1 to 7, wherein The optical path of the red laser light between the red laser unit and the focusing lens is shorter than the optical path of the green laser light between the green laser unit and the focusing lens, and the optical path of the green laser light between the green laser unit and the focusing lens is shorter than the optical path of the blue laser light between the blue laser unit and the focusing lens. The light combining unit comprises a reflecting element, a first light combining element and a second light combining element.
9. The light source apparatus according to claim 8, wherein The reflecting element is arranged on a light path of the blue laser light and is used for reflecting the blue laser light. The first light combining element is arranged on a light path of the green laser light and the blue laser light reflected by the reflecting element, and is used for reflecting the green laser light and transmitting the blue laser light to form specified combined light.
10. The light source apparatus according to claim 8, wherein The second light combining element is arranged on a light path of the red laser light and the specified combined light, and is used for reflecting the specified combined light and transmitting the red laser light to form the specified laser light. The application relates to a laser light source and a light homogenizing module. The laser light source comprises a laser light source for generating specified laser light; and a light homogenizing module comprising a first light homogenizing rod and a second light homogenizing rod, which are arranged in sequence on a light path of the specified laser light so that the specified laser light is homogenized by the first light homogenizing rod and the second light homogenizing rod in sequence and then emitted. One of the first light homogenizing rod and the second light homogenizing rod is a polygonal light homogenizing rod, and the other is a circular light homogenizing rod.
11. An illumination device, characterized by The first light homogenizing rod is a polygonal light homogenizing rod, and the second light homogenizing rod is a circular light homogenizing rod. The long side of a light spot corresponding to the specified laser light emitted by the laser light source matches the longest diagonal of a polygonal cross section corresponding to the first light homogenizing rod. The outer contour of the polygonal cross section corresponding to the first light homogenizing rod circumscribes the outer contour of a circular cross section corresponding to the second light homogenizing rod. The light homogenizing module further comprises a diaphragm element arranged on a side of the second light homogenizing rod away from the first light homogenizing rod. The diaphragm element comprises a plurality of diaphragms which are switchably arranged on a light path of the specified laser light emitted by the second light homogenizing rod, and the shapes of the diaphragms are different. The second light homogenizing rod is a circular light homogenizing rod, and the plurality of diaphragms comprise a circular diaphragm, the aperture of the circular diaphragm matching the aperture of the circular cross section corresponding to the second light homogenizing rod. The light homogenizing module further comprises a first scattering sheet and a second scattering sheet, the first scattering sheet being arranged between the laser light source and the first light homogenizing rod and located on the light path of the specified laser light; The second scattering sheet being arranged between the second light homogenizing rod and the diaphragm element and located on the light path of the specified laser light. The laser light source comprises a red laser unit, a green laser unit, a blue laser unit and a light combining unit, wherein the red laser unit is used for generating red laser light, the green laser unit is used for generating green laser light, and the blue laser unit is used for generating blue laser light. The light combining unit is used for combining the red laser light, the green laser light and the blue laser light to generate the specified laser light. The laser light source further comprises a focusing lens arranged between the light combining unit and the first light homogenizing rod and located on the light path of the specified laser light. The optical path of the red laser light between the red laser unit and the focusing lens is shorter than the optical path of the green laser light between the green laser unit and the focusing lens, and the optical path of the green laser light between the green laser unit and the focusing lens is shorter than the optical path of the blue laser light between the blue laser unit and the focusing lens. The light combining unit comprises a reflecting element, a first light combining element and a second light combining element. The reflecting element is arranged on a light path of the blue laser light and is used for reflecting the blue laser light. The first light combining element is arranged on a light path of the green laser light and the blue laser light reflected by the reflecting element, and is used for reflecting the green laser light and transmitting the blue laser light to form specified combined light. The second light combining element is arranged on a light path of the red laser light and the specified combined light, and is used for reflecting the specified combined light and transmitting the red laser light to form the specified laser light. The application relates to a laser light source and a light homogenizing module. The laser light source comprises a laser light source for generating specified laser light; and a light homogenizing module comprising a first light homogenizing rod and a second light homogenizing rod, which are arranged in sequence on a light path of the specified laser light so that the specified laser light is homogenized by the first light homogenizing rod and the second light homogenizing rod in sequence and then emitted. One of the first light homogenizing rod and the second light homogenizing rod is a polygonal light homogenizing rod, and the other is a circular light homogenizing rod. The first light homogenizing rod is a polygonal light homogenizing rod, and the second light homogenizing rod is a circular light homogenizing rod. The long side of a light spot corresponding to the specified laser light emitted by the laser light source matches the longest diagonal of a polygonal cross section corresponding to the first light homogenizing rod. The outer contour of the polygonal cross section corresponding to the first light homogenizing rod circumscribes the outer contour of a circular cross section corresponding to the second light homogenizing rod. The light homogenizing module further comprises a diaphragm element arranged on a side of the second light homogenizing rod away from the first light homogenizing rod. The diaphragm element comprises a plurality of diaphragms which are switchably arranged on a light path of the specified laser light emitted by the second light homogenizing rod, and the shapes of the diaphragms are different. The second light homogenizing rod is a circular light homogenizing rod, and the plurality of diaphragms comprise a circular diaphragm, the aperture of the circular diaphragm matching the aperture of the circular cross section corresponding to the second light homogenizing rod. The light homogenizing module further comprises a first scattering sheet and a second scattering sheet, the first scattering sheet being arranged between the laser light source and the first light The light source device according to any one of claims 1 to 10, which is provided in the housing.