A low-loss light source module for multiplexing light

Abstract

This invention discloses a low-loss multi-path light source module. The light-combining component has a green light source, a blue light source, an auxiliary blue light source, and a mixing lens arranged sequentially around its four outer sides. A red light source is positioned on its bottom or top surface. The green light source's optical axis is directed towards the green-reflecting surface of a first dichroic filter; the auxiliary blue light source's optical axis is directed towards the red-blue light-transmitting surface of the first dichroic filter; the blue light source's optical axis is directed towards the green-blue light-transmitting surface of a second dichroic filter; and the red light source's optical axis is directed towards the red-reflecting surface of the second dichroic filter. Multiple independently controllable circular LED light sources and an adjustable light-scattering angle and uniform light-collecting structure are provided at each light source. This light source module optimizes the component structure layout, sets up a dedicated mixing optical path, improves the excitation and utilization efficiency of the green light source, enhances the optical performance of the light source module, and significantly strengthens its energy-saving lighting effect, demonstrating outstanding technical advantages.

Description

Technical Field

[0001] This invention belongs to the field of lighting optical light source technology, specifically relating to a low-loss multi-path light combining light source module. Background Technology

[0002] RGB / BP multicolor beam combining optical paths primarily utilize multiple monochromatic light source components in conjunction with dichroic beam splitters to achieve the superposition and combined output of beams of different colors, resulting in high-purity, high-brightness color composite beams. Currently, this type of multicolor beam combining optical path is gradually being introduced into stage lighting source module design to improve the beam concentration and output brightness of stage lighting fixtures, becoming one of the mainstream light source solutions for small-angle, narrow-beam stage lighting fixtures. However, existing traditional multicolor beam combining optical path structures adapted for stage lighting fixtures still have many inherent technical defects in practical applications. These defects stem from inherent deficiencies in structural design, component selection, and light source driving methods: Firstly, existing beam combining optical paths generally use conventional green-transparent dichroic lenses to complete the splitting and transmission of the green light path. These lenses have limited transmittance for green light, resulting in significant light energy loss and failing to maximize the output efficiency of the green light path and the green light excitation path. Firstly, the overall light energy utilization rate is low. Secondly, existing stage lighting combined light sources mostly adopt a single-point or single-circle high-energy-density LED full-power drive mode. To meet the high illuminance requirements of small-angle light output, the LED chip is in a full-load working state for a long time. Under this condition, the photoelectric conversion efficiency of the LED chip is low. Under the premise that the input power of the entire lamp is the same or close, it is impossible to simultaneously achieve high illuminance performance at small angles and high luminous flux performance at large angles. The optical output indicators of the two working states cannot be optimized synchronously. In summary, existing stage lighting multi-channel combined light paths have shortcomings such as large light energy loss and poor adaptability to working conditions, which greatly limits the improvement of the comprehensive optical performance and structural adaptability of high-performance stage lighting light source modules. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a low-loss multi-path light source module. By optimizing the selection of optical components, adding multiple light sources and setting up a zoned control structure, while matching and adjusting a dedicated mixing optical path and simplifying the overall component layout, the optical performance of the light source module is improved, and the overall energy-saving lighting effect of the light source module is significantly enhanced.

[0004] To achieve the above objectives, the present invention provides a low-loss multi-path light source module, comprising a light combining component, multiple monochromatic LED light source components, and a light mixing lens; the multiple monochromatic LED light source components are respectively configured as a red light source, a green light source, a blue light source, and an auxiliary blue light source; the light mixing lens is arranged in a hexahedral geometric orientation with the red light source, green light source, blue light source, and auxiliary blue light source, and a light combining cavity is configured inside it, wherein the optical axes of the green light source and the auxiliary blue light source coincide and their emission directions are opposite, the blue light source is disposed between the green light source and the auxiliary blue light source, and its optical axis is perpendicular to the optical axes of the green light source and the auxiliary blue light source, the light mixing lens is disposed opposite to the blue light source, and the red light source is disposed adjacent to the light mixing lens, the green light source, the blue light source, and the auxiliary blue light source on the bottom or top surface, respectively, and its optical axis is perpendicular to the optical axes of the green light source, the blue light source, and the auxiliary blue light source, respectively; the green light source is configured as an excitation-type green light source, including an excitation LED light source and a light mixing lens disposed with the auxiliary blue light source. The green fluorescent conversion element is located in front of the excitation LED light source; the auxiliary blue light source is used to assist in the secondary excitation of the green light source; the light combining component includes a first dichroic filter and a second dichroic filter. The first dichroic filter is vertically and laterally inclined in the light combining cavity. The second dichroic filter and the first dichroic filter are vertically and laterally inclined in different spatial diagonal directions in the light combining cavity. The first dichroic filter and the second dichroic filter are intersected and intersected, and their intersection center point is set as the coupling core of the light source module. The reflective surface of the first dichroic filter is coated with a beam-splitting film that reflects green light and transmits red and blue light. Its reflective surface is biased towards the optical axis emission direction of the green light source, and its transmission surface is biased towards the optical axis emission direction of the auxiliary blue light source. The reflective surface of the second dichroic filter is coated with a beam-splitting film that reflects red light and transmits blue and green light. Its reflective surface is biased towards the optical axis emission direction of the red light source, and its transmission surface is biased towards the optical axis emission direction of the blue light source.

[0005] Furthermore, each of the monochrome LED light source components includes a light source backplate and a plurality of concentrically nested, radially increasing ring-shaped LED light sources disposed on the light source backplate. The ring-shaped LED light source at the center is provided with a reference LED, and the remaining peripheral ring-shaped LED light sources are provided with a plurality of secondary LEDs. The secondary LEDs are arranged in a ring array around the reference LED as the center, outside the reference LED.

[0006] Furthermore, the monochromatic LED light source assembly is also provided with a light-collecting structure. The light-collecting structure is located on the side of the optical axis of the monochromatic LED light source assembly and includes three collimating lenses arranged coaxially. The collimating lenses are parallel to the mounting surface of the circular LED light source. At the same time, multiple collimating plano-convex lenses are provided on the collimating lenses in a honeycomb pattern. The number of collimating plano-convex lenses corresponds to the sum of the number of the reference LED and the secondary LED, and the positions of the collimating plano-convex lenses correspond to the positions of the reference LED and each secondary LED, respectively, for collecting the light emitted by the reference LED and the secondary LED into approximately parallel light rays.

[0007] Furthermore, the three collimating lenses of the light-collecting structure are arranged sequentially from the optical axis of the corresponding circular LED light source outward as a first collimating lens, a second collimating lens, and a third collimating lens; the size of the collimating plano-convex lenses on the first, second, and third collimating lenses increases sequentially according to the order of the collimating lenses they are on, and the curvature of the transmission surface of the collimating plano-convex lens also gradually increases accordingly.

[0008] Furthermore, the light-collecting structure also includes a light-diffusing plate, which is parallel to the first collimating lens, the second collimating lens, and the third collimating lens, and is disposed away from the second collimating lens and the third collimating lens.

[0009] Furthermore, a light-diffusing plate is provided on one side of the light-emitting surface of the light-mixing lens, and the light-diffusing plate is configured as a single-sided compound eye-shaped lens structure.

[0010] Furthermore, the green fluorescent conversion element can be configured as green fluorescent powder, green fluorescent ceramic, green fluorescent crystal, or green fluorescent sheet.

[0011] Furthermore, the red light source can be configured as an excitation-type red light source, which includes a second excitation LED light source and a red fluorescent conversion element disposed in front of the second excitation LED light source.

[0012] Furthermore, it also includes a control component, which is electrically connected to the circular LED light source of each monochrome LED light source assembly. The control component can independently control the lighting or turning off of the circular LED light source and the luminous flux of the circular LED light source.

[0013] Furthermore, it also includes a multi-faceted, cube-shaped module frame with an embedded mounting structure on each edge of the module frame. The back plates of the light mixing lens, green light source, blue light source, and auxiliary blue light source are sequentially arranged around the module frame and mounted on each side of the module frame through the mounting structure. The back plate of the red light source is mounted on the bottom or top surface of the module frame through the mounting structure.

[0014] Compared to existing technologies, the beneficial effects of this invention are as follows: This invention provides a low-loss multi-path light source module. The light combining component employs a first dichroic filter with high green light reflectivity and red-blue light transmission, and a second dichroic filter with high red light reflectivity and green-blue light transmission. Combined with an excitation-type green light source, the spatial arrangement of the red, green, and blue light sources and the auxiliary blue light source for secondary excitation is optimized and adjusted. This improves the green light reflection utilization rate, greatly reduces the transmission loss of the green light path, achieves efficient utilization of light energy in the green light path and excitation light path, reduces ineffective light loss, improves light energy utilization from the optical transmission level, and achieves energy-saving and efficient lighting effects. Secondly, the array of inner and outer rings of LED beads enables independently controllable monochrome LED light source components. Based on ring-controlled zone lighting logic, under the premise of a relatively consistent overall input power, only the inner ring LED beads are activated at small angles to ensure high illuminance output, while the inner and outer ring LED beads are activated simultaneously at large angles. By distributing the workload of individual LED beads across multiple light sources, the operating power of a single LED bead is effectively reduced, significantly improving the photoelectric conversion efficiency of the LED beads. This avoids the drawbacks of high power consumption and low luminous efficiency caused by full-power driving of traditional single-ring, single-point LED beads, without increasing the overall light output. Based on energy efficiency, this invention simultaneously achieves optimal output of high illuminance at small angles and high luminous flux at large angles, demonstrating excellent energy-saving lighting performance. Furthermore, a dedicated light-collecting structure with mixing and homogenizing capabilities is installed at the output front end of each monochrome LED light source component to homogenize multi-path composite color light, thoroughly improving the problems of color layering and uneven brightness in traditional combined light spots, thus enhancing light projection quality and lighting consistency. Finally, this invention optimizes the compact arrangement of multiple light paths, reducing the overall space occupied by the module, improving equipment integration, adapting to the miniaturization and lightweight design requirements of luminaires, and further optimizing the overall energy efficiency of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the exploded structure of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the structure of a monochrome LED light source assembly according to Embodiment 1 of the present invention; Figure 4This is a schematic diagram of the structure of the circular LED light source according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of the excitation-type green light source according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the structure of the excitation-type red light source according to Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

[0016] In the diagram: 1-Module frame, 11-Mounting screws, 12-Light combining cavity, 13-Protective baffle, 2-Light combining assembly, 21-First dichroic filter, 22-Second dichroic filter, 31-Red light source, 311-Second excitation LED light source, 312-Red phosphor converter, 32-Green light source, 321-Excitation LED light source, 322-Green phosphor converter, 33-Blue light source, 34-Auxiliary blue light source, 41-Light source backplate, 42-Circular LED light source, 43-Reference LED bead, 44-Secondary LED bead, 5-Light collecting structure, 51-First collimating lens, 52-Second collimating lens, 53-Light homogenizer, 54-Third collimating lens, 55-Collimating plano-convex lens, 56-Light mixing lens, 57-Concentrated light homogenizer. Detailed Implementation

[0017] To provide a more detailed description of the present invention, the following description is provided in conjunction with the accompanying drawings. It should be noted that the embodiments described below are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example 1

[0018] See Figure 1 and Figure 2 This embodiment provides a low-loss multi-path light source module, including a module frame 1, a light combining component 2, multiple monochrome LED light source components, a light mixing lens 56, and a control component; the module frame 1 is a multi-faceted hollow cube, and multiple mounting screws 11 are embedded in each edge, and the hollow inner cavity is set as a light combining cavity 12.

[0019] The light combining component 2 is disposed within the light combining cavity 12, specifically including a first dichroic filter 21 and a second dichroic filter 22. The first dichroic filter 21 has a reflective surface coated with a beam-splitting film that reflects green light and transmits red and blue light. This reflective surface has a green light reflection efficiency of up to 99.9% and extremely low green light loss. The second dichroic filter 22 has a reflective surface coated with a beam-splitting film that reflects red light and transmits blue and green light. Both the first and second dichroic filters 21 and 22 have slots at one of their diagonals, allowing them to interlock and be fixed together. In this embodiment, the bottom edge of the first dichroic filter 21 is longitudinally perpendicular to the bottom of the module frame 1. The first dichroic filter 21 and the second dichroic filter 22 are disposed within the light-combining cavity 12, obliquely facing the side surface of the module frame 1 along the body diagonal direction of the module frame 1, and the angle between them and the side surface of the module frame 1 is set to 45°; the second dichroic filter 22 and the first dichroic filter 21 are disposed within the light-combining cavity 12, obliquely facing the top and bottom surfaces of the module frame 1 along different body diagonal directions of the module frame 1, and the angle between them and the top and bottom surfaces of the module frame 1 is set to 45°; the center point where the first dichroic filter 21 and the second dichroic filter 22 intersect is set as the coupling core of the light source module, and the reflection direction of their reflective surfaces points to the same side surface of the module frame 1.

[0020] See Figures 1 to 4The monochromatic LED light source assembly is arranged on each side of the module frame 1 around the light combining cavity 12. Specifically, the monochromatic LED light source assembly includes a red light source 31, a green light source 32, a blue light source 33, and an auxiliary blue light source 34. Each of the red light source 31, green light source 32, blue light source 33, and auxiliary blue light source 34 is equipped with a light source backplate 41, multiple ring-shaped LED light sources 42, and a light-collecting structure 5. The outer edge of the light source backplate 41 has a mounting groove, and the assembly is mounted on the module frame 1 through the mounting groove and matching mounting screws 11, thereby achieving fixed installation of the monochromatic LED light source. Other structural components of the LED light source assembly facilitate the modular grouping of each group of monochromatic LED light source assemblies. The circular LED light source 42 is mounted on the inner surface of the light source back plate 41. The light-collecting structure 5 is located on the optical axis emitting side of the circular LED light source 42, and its outer edge is fixed to the inner surface of the light source back plate 41 surrounding the circular LED light source 42. The light mixing lens 56, the green light source 32, the blue light source 33, and the auxiliary blue light source 34 are sequentially arranged around the respective sides of the module frame 1 on the light source back plate 41. Specifically, the green light source 32 and the auxiliary blue light source 34... The optical axes of the light sources coincide and their emission directions are opposite. The optical axis emission direction of the green light source 32 points towards the reflective surface of the first dichroic filter 21, and the optical axis emission direction of the auxiliary blue light source 34 points towards the transmissive surface of the first dichroic filter 21. The blue light source 33 is disposed between the green light source 32 and the auxiliary blue light source 34, and its optical axis is perpendicular to the optical axes of the green light source 32 and the auxiliary blue light source 34, and points towards the transmissive surface of the second dichroic filter 22. The red light source 31 is adjacent to the mixing lens 56, the green light source 32, the blue light source 33, and the auxiliary blue light source 34, respectively, and its light source backplate 41... The light-mixing lens 56 is positioned on the bottom or top surface, with its optical axis perpendicular to the optical axes of the green light source 32, the blue light source 33, and the auxiliary blue light source 34, respectively, and pointing towards the reflective surface of the second dichroic filter 22. The light-mixing lens 56 is positioned opposite the blue light source 33, and the reflection direction of the optical axis of the green light source 32, the reflection direction of the optical axis of the red light source 31, and the transmission direction of the optical axis of the blue light source 33 all point in the same direction and converge at the light-mixing lens 56. In this embodiment, the red light source 31 is positioned on the bottom surface of the module frame 1, and a protective baffle 13 is installed on the top surface of the module frame 1 opposite to it. See Figure 4 and Figure 5In this embodiment, the green light source 32 is configured as an excitation-type green light source 32, including an excitation LED light source 321 and a green phosphor converter 322. The excitation LED light source 321 is also provided with multiple circular LED light sources 42. The green phosphor converter 322 is disposed in front of the circular LED light sources 42. The green phosphor converter 322 can be configured as green phosphor, green phosphor ceramic, green phosphor crystal or green phosphor sheet according to actual production and use requirements. If green phosphor is used as the green phosphor converter 322, a carrier is required to uniformly place the green phosphor to ensure green light excitation efficiency. The optical axis transmission direction of the auxiliary blue light source 34 is pointed to the green phosphor converter 322, which is used to assist the secondary excitation of the green light source and improve the green light generation efficiency of the excitation-type green light source 32. See Figure 4 and Figure 6 The red light source 31 can be configured as a direct-emission red light source 31 or an excitation-type red light source 31. If the red light source 31 is configured as an excitation-type red light source 31, then the excitation-type red light source 31 includes a second excitation LED light source 311 and a red phosphor converter 312 disposed in front of the second excitation LED light source 311. The second excitation LED light source 311 is also provided with multiple circular LED light sources 42. The red phosphor converter 312 can be configured as red phosphor, red phosphor ceramic, red phosphor crystal, or red phosphor sheet according to actual production and use requirements. If red phosphor is used as the red phosphor conversion element 312, a carrier needs to be set up to evenly place the red phosphor to ensure the red light excitation efficiency. In this embodiment, a protective baffle 13 can be set on the side of the module frame 1 opposite to the red light source 31. Alternatively, a second auxiliary blue light source (not shown in the figure) can be set up to improve the red light excitation efficiency. The optical axis of the second auxiliary blue light source coincides with the optical axis of the second excitation LED light source 311 and the emission directions are opposite to each other. This is used to assist the secondary excitation of the red light source and improve the red light generation efficiency of the excitation red light source 31.

[0021] See Figure 4Among multiple ring-shaped LED light sources 42, the central ring-shaped LED light source 42 is equipped with a high-energy reference LED bead 43. The reference LED bead 43 can be one or multiple. Each of the remaining outer ring-shaped LED light sources 42 is equipped with several high-energy secondary LED beads 44. These secondary LED beads 44 are arranged in a circular array around the reference LED bead 43, with the reference LED bead 43 as the center. The multiple outer ring-shaped LED light sources 42 are concentrically nested outside the reference LED bead 43, with their diameter increasing with distance from the reference LED bead 43, and the number of LED beads they contain also increasing with distance from the reference LED bead 43. Each ring-shaped LED light source... Each of the light sources 42 can be individually controlled and adjusted. In this embodiment, the central reference LED bead 43 is set to one, and the outer ring-shaped LED light source 42 is set to two rings. The innermost ring-shaped LED light source 42 is set with 7 secondary LED beads 44, and the outermost ring-shaped LED light source 42 is set with 14 secondary LED beads 44. In actual application, when the light source module pursues maximum illuminance, the central reference LED bead 43 is controlled to output maximum brightness. When the light source module pursues maximum output luminous flux, the reference LED bead 43 and the secondary LED beads 44 are fully lit, while maintaining the same or close input power as when pursuing maximum illuminance. This reduces the power used by each LED chip and improves the luminous efficiency. As a result, the total output luminous flux and illuminance of the light source module are significantly improved.

[0022] See Figure 3 and Figure 4The light-collecting structure 5 is provided with a first collimating lens 51, a second collimating lens 52, a light-diffusing plate 53, and a third collimating lens 54 arranged coaxially outward along the optical axis of the corresponding circular LED light source 42. The first collimating lens 51, the second collimating lens 52, and the third collimating lens 54 are all parallel to the mounting surface of the circular LED light source 42. Multiple collimating plano-convex lenses 55 are arranged in a honeycomb pattern on the three collimating lenses, and the number of collimating plano-convex lenses 55 on the three collimating lenses corresponds to the sum of the number of the reference LED bead 43 and the secondary LED bead 44. The positions of the reference LED 43 and each secondary LED 44 correspond to the positions of the reference LED 43 and each secondary LED 44, so that the light emitted by the corresponding reference LED 43 and each secondary LED 44 is collected into approximately parallel light rays. At the same time, the size of the collimating plano-convex lens 55 on the first collimating lens 51, the second collimating lens 52 and the third collimating lens 54 gradually increases as the distance of the collimating lens from the circular LED light source 42 increases, and the curvature of its transmission surface also gradually increases as the size increases. The light homogenizer 53 is parallel to the three collimating lenses, which makes the color of the light spot more uniform after the multiple light paths are combined.

[0023] The control component (not shown in the figure) is electrically connected to the circular LED light source 42 of each monochrome LED light source component. It can independently control the lighting or shutdown of the circular LED light source 42 and the illumination luminous flux of the circular LED light source 42. In this embodiment, the control component can be a partition level control component, a dual-channel PWM dimming component, an intelligent linkage dimming component, or other existing mature control components to realize the independent start-up and shutdown, luminous flux adjustment, and mixed beam angle adaptation of the circular light source in each monochrome LED light source. At the same time, the wiring, electrical control matching, assembly and debugging processes of the various control components that can be selected above are all conventional technologies known in the art and will not be described in detail here.

[0024] See Figures 1 to 4In practical applications, the light emitted by the circular LED light source 42 can reach a maximum scattering angle of 120 degrees before entering the light-collecting structure 5. The first collimating lens 51, the second collimating lens 52, and the third collimating lens 54 collect this light into approximately parallel light through the collimating plano-convex lenses 55 that change stepwise, and finally direct it toward the light-combining component 2. The light-combining component 2 uniformly transmits the light from the blue light source 33 to the light-mixing lens 56, and reflects the light from the green and red light sources 31 to the light-mixing lens 56, and finally focuses it onto its focal plane to complete the light mixing. The light from the auxiliary blue light source 34, after being collected into approximately parallel light, is transmitted to the three collimating lenses of the green light source 32, and is then reverse-focused by the collimating plano-convex lenses 55 on the three collimating lenses, thereby concentrating for secondary excitation, increasing the amount of green light, improving the green light excitation efficiency, and the green light generated by the secondary excitation has the same reflection path as the previous green light. Example 2

[0025] See Figure 7 The light-diffusing plate 57 is provided on one side of the light-emitting surface of the light-mixing lens 56, and the light-diffusing plate 57 is configured as a single-sided compound eye lens structure; at the same time, the light-receiving structure 5 is provided with a first collimating lens 51, a second collimating lens 52, and a third collimating lens 54 arranged coaxially outward along the optical axis of the corresponding circular LED light source 42, and the first collimating lens 51, the second collimating lens 52, and the third collimating lens 54 are all parallel to the mounting surface of the circular LED light source 42; multiple collimating plano-convex lenses 55 are provided on the three collimating lenses in a honeycomb pattern, and the collimating plano-convex lenses 55 on the three collimating lenses are... The number of lenses 55 corresponds to the sum of the number of reference LED beads 43 and secondary LED beads 44, and their positions also correspond to the positions of the reference LED beads 43 and each secondary LED bead 44, so that they can collect the light emitted by the corresponding reference LED beads 43 and each secondary LED bead 44 into approximately parallel light rays; at the same time, the size of the collimating plano-convex lenses 55 on the first collimating lens 51, the second collimating lens 52 and the third collimating lens 54 gradually increases as the distance of the collimating lens from the circular LED light source 42 increases, and the curvature of their transmission surface also gradually increases as the size increases; See Figures 1 to 4 In this embodiment, the reflection direction of the optical axis of the green light source 32, the reflection direction of the optical axis of the red light source 31, and the transmission direction of the optical axis of the blue light source 33 all point in the same direction and converge at the light mixing lens 56 to perform light mixing. After the multiple optical paths have completed light mixing at the light mixing lens 56, they will pass through the light homogenizer 57, thereby improving the light mixing efficiency through the light homogenizer 57 and making the color of the light spot more uniform after the multiple optical paths are combined.

[0026] Except for the difference in the placement of the light homogenizer 57 in the light-collecting structure 5 and the light-mixing lens 56 between Example 2 and Example 1, the other structures and optical path operation are the same as in Example 1.

[0027] In this embodiment, the above is merely an example and is not intended to limit the scope of protection of this application.

[0028] The embodiments disclosed above are merely for illustrative purposes and should not be construed as limiting the scope of the invention. Therefore, any simple modifications or variations made in accordance with the claims of this invention are still within the scope of protection of this invention.

[0029] The scope of protection of this invention should be determined by the defined scope. For those skilled in the art, various improvements and modifications can be made without departing from the spirit and scope of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A low-loss multi-path light source module, characterized in that, The system includes a light combining component (2), multiple monochromatic LED light source components, and a light mixing lens (56). The multiple monochromatic LED light source components are respectively configured as a red light source (31), a green light source (32), a blue light source (33), and an auxiliary blue light source (34). The light mixing lens (56) is arranged in a hexahedral geometric orientation with the red light source (31), green light source (32), blue light source (33), and auxiliary blue light source (34), and is configured with a light combining cavity (12) inside. The optical axes of the green light source (32) and the auxiliary blue light source (34) coincide and their emission directions are opposite. The blue light source (33) is located between the green light source (32) and the auxiliary blue light source (34), and its optical axis is aligned with that of the green light source (32). The optical axis of the auxiliary blue light source (34) is perpendicular to that of the blue light source (33). The mixing lens (56) is arranged opposite to the blue light source (33). The red light source (31) is arranged adjacent to the mixing lens (56), the green light source (32), the blue light source (33), and the auxiliary blue light source (34) on the bottom or top surface, respectively. Its optical axis is perpendicular to the optical axes of the green light source (32), the blue light source (33), and the auxiliary blue light source (34), respectively. The green light source (32) is configured as an excitation-type green light source (32), including an excitation LED light source (321) and a green phosphor converter (322) arranged in front of the excitation LED light source (321). The auxiliary blue light source (34) is used to assist the secondary excitation of the green light source. The light combining component (2) includes a first dichroic filter (21) and a second dichroic filter (22). The first dichroic filter (21) is vertically and laterally inclined in the light combining cavity (12). The second dichroic filter (22) and the first dichroic filter (21) are vertically and laterally inclined in different spatial diagonal directions in the light combining cavity (12). The first dichroic filter (21) and the second dichroic filter (22) are interlocked and intersecting. The center point of their intersection is set as the coupling core of the light source module. The reflective surface of the first dichroic filter (21) is coated with a beam splitting film that reflects green light and transmits red and blue light. Its reflective surface is set towards the optical axis emission direction of the green light source (32), and its transmission surface is set towards the optical axis emission direction of the auxiliary blue light source (34). The reflective surface of the second dichroic mirror is coated with a beam splitting film that reflects red light and transmits blue and green light. Its reflective surface is set towards the optical axis emission direction of the red light source (31), and its transmission surface is set towards the optical axis emission direction of the blue light source (33).

2. The low-loss multi-path light source module according to claim 1, characterized in that, Each monochrome LED light source assembly includes a light source backplate (41) and multiple concentrically nested radially increasing ring-shaped LED light sources (42) arranged on the light source backplate (41). The ring-shaped LED light source (42) at the center is provided with a reference LED bead (43), and the other peripheral ring-shaped LED light sources (42) are provided with several secondary LED beads (44). The secondary LED beads (44) are arranged in a ring array around the reference LED bead (43) with the reference LED bead (43) as the center.

3. A low-loss multi-path light source module according to claim 2, characterized in that, The monochrome LED light source assembly is also provided with a light-collecting structure (5). The light-collecting structure (5) is located on the side of the optical axis of the monochrome LED light source assembly. Each structure includes three collimating lenses arranged coaxially. The collimating lenses are parallel to the mounting surface of the circular LED light source (42). At the same time, multiple collimating plano-convex lenses (55) with a honeycomb distribution are provided on the collimating lenses. The number of collimating plano-convex lenses (55) corresponds to the sum of the number of the reference LED beads (43) and the number of the secondary LED beads (44). The position of the collimating plano-convex lenses (55) corresponds to the position of the reference LED beads (43) and each of the secondary LED beads (44). They are used to collect the light emitted by the reference LED beads (43) and the secondary LED beads (44) into approximately parallel light.

4. A low-loss multi-path light source module according to claim 3, characterized in that, The three collimating lenses of the light-collecting structure (5) are arranged outward from the optical axis of the corresponding circular LED light source (42) as a first collimating lens (51), a second collimating lens (52), and a third collimating lens (54); the size of the collimating plano-convex lens (55) on the first collimating lens (51), the second collimating lens (52), and the third collimating lens (54) increases in the order of the collimating lenses they are on, and the curvature of the transmission surface of the collimating plano-convex lens (55) also gradually increases accordingly.

5. A low-loss multi-path light source module according to claim 4, characterized in that, The light-collecting structure (5) further includes a light-diffusing plate (53), which is parallel to the first collimating lens (51), the second collimating lens (52) and the third collimating lens (54), and is disposed away from the second collimating lens (52) and the third collimating lens (54).

6. A low-loss multi-path light source module according to claim 4, characterized in that, The light-discharging lens (56) has a light-diffusing plate (57) on one side of its light-emitting surface, and the light-diffusing plate (57) is configured as a single-sided compound eye-shaped lens structure.

7. A low-loss multi-path light source module according to claim 1, characterized in that, The green fluorescent conversion element (322) can be configured as green fluorescent powder, green fluorescent ceramic, green fluorescent crystal or green fluorescent sheet.

8. A low-loss multi-path light source module according to claim 1, characterized in that, The red light source (31) can be configured as an excitation-type red light source (31), which includes a second excitation LED light source (311) and a red fluorescent converter (312) disposed in front of the second excitation LED light source (311).

9. A low-loss multi-path light source module according to claim 2, characterized in that, It also includes a control component, which is electrically connected to the circular LED light source (42) of each monochrome LED light source component. It can independently control the lighting or turning off of the circular LED light source (42) and the illumination luminous flux of the circular LED light source (42).

10. A low-loss multi-path light source module according to claim 2, characterized in that, It also includes a multi-faceted hollow cube-shaped module frame (1), with an installation structure embedded on each edge of the module frame (1). The back plates (41) of the light mixing lens (56), green light source (32), blue light source (33) and auxiliary blue light source (34) are arranged around each other and through the installation structure on each side of the module frame (1). The back plate (41) of the red light source (31) is arranged on the bottom or top surface of the module frame (1) through the installation structure.

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