RGB coupling white light laser light source structure and light source system

Abstract

The utility model relates to an RGB coupling white light laser light source structure and a light source system. The RGB coupling white light laser light source structure comprises a shell. The converging assembly comprises a mounting seat connected to the shell, and a converging lens is arranged on the mounting seat; the light source comprises a green light source, a red light source and a blue light source which are arranged in the shell; the reflecting mirrors comprise a first reflecting mirror, a second reflecting mirror and a third reflecting mirror which are respectively positioned at the output ends of the light sources; and the beam combiner comprises a first beam combiner and a second beam combiner which are arranged in the shell. According to the laser light source structure, three-color light sources are integrated, and light beams with different wavelengths are combined through a series of light path structures, are converged on the converging lens and are finally coupled into the optical fiber, so that white laser output from the optical fiber is obtained; the whole laser light source is compact in structure, few in component and low in installation and maintenance difficulty, and the manufacturing cost and the use cost of the laser light source are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor laser light sources, in particular to an RGB coupled white light laser light source structure and a light source system. Background Art

[0002] White light is a mixture of the three primary colors of red (R), green (G), and blue (B). In order to obtain white laser output from the optical fiber, the three wavelengths of laser light beams need to be combined and then coupled into the optical fiber for output.

[0003] Existing white light sources usually use an external coupling structure to couple the light beams emitted by three-color laser light source modules into optical fibers. The workload of assembly and debugging is large, and the volume of the entire structure is large, which is not conducive to coupling the light beam into an optical fiber with a smaller diameter. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem that the white light source in the prior art usually adopts the method of coupling the light beams emitted by the three-color laser light source module into the optical fiber through an external coupling structure, the workload of assembly and debugging is large, and the volume of the entire structure is large, which is not conducive to coupling the light beam into the optical fiber with a smaller diameter.

[0005] In order to solve the above technical problems, the utility model provides a RGB coupled white light laser light source structure, comprising:

[0006] a housing, the housing comprising an internal cavity;

[0007] A converging component, the converging component comprising a mounting seat, the mounting seat being connected to the housing, and the mounting seat being provided with a through hole extending along its length direction and communicating with the cavity, wherein a converging lens is coaxially provided in the through hole;

[0008] A light source, comprising a green light source, a red light source and a blue light source respectively disposed in the cavity;

[0009] A reflector, wherein the reflector comprises a first reflector, a second reflector and a third reflector, wherein the first reflector, the second reflector and the third reflector are arranged in the cavity and are respectively located at output ends of the green light source, the red light source and the blue light source;

[0010] A beam combiner, wherein the beam combiner comprises a first beam combiner and a second beam combiner disposed in the cavity, wherein the converging lens, the first beam combiner, the second beam combiner and the third reflector are sequentially spaced apart along the extension direction of the through hole, and the first reflector and the second reflector are spaced apart from the first beam combiner and the second beam combiner respectively in the width direction of the housing;

[0011] The light emitted by the green light source, the red light source and the blue light source is combined by the first beam combiner and the second beam combiner after being reflected and emitted to the converging lens.

[0012] In one embodiment of the utility model, the green light source includes a first base, on which a green laser is mounted; the blue light source includes a second base, on which a blue laser is mounted; and the red light source includes a third base, on which a red laser is mounted.

[0013] In an embodiment of the utility model, a power supply connector is provided on the shell, and the power supply connector includes multiple groups of power supply pins, and the green light source, the blue light source and the red light source are respectively connected to a group of the power supply pins.

[0014] In one embodiment of the present invention, the first beam combiner and the second beam combiner have an included angle with the extension direction of the through hole, and the first reflector, the second reflector and the third reflector are parallel to the first beam combiner and the second beam combiner.

[0015] In one embodiment of the utility model, the mounting seat includes a connecting seat and a positioning frame, both of which are tubular structures, a mounting hole is opened on one side of the shell, the connecting seat is coaxially inserted into the mounting hole, and a flange is installed on the connecting seat and is connected to the shell by bolts, one end of the positioning frame is threadedly connected to one end of the connecting seat close to the cavity, and the other end of the positioning frame is coaxially provided with the converging lens.

[0016] In one embodiment of the utility model, an annular groove is coaxially formed on the circumferential surface of the connecting seat, and a sealing ring is arranged in the annular groove.

[0017] In an embodiment of the present invention, three light source seats are arranged in the cavity, and the green light source, the red light source and the blue light source are respectively arranged on one of the light source seats.

[0018] In an embodiment of the present utility model, a limiting block for limiting the first beam combining mirror and the second beam combining mirror is further provided in the housing.

[0019] In one embodiment of the present invention, the converging lens is a blue light aspherical lens.

[0020] A light source system comprises the RGB coupled white light laser light source structure as described in any one of the above.

[0021] The above technical solution of the utility model has the following advantages compared with the prior art:

[0022] The utility model discloses a laser light source structure and light source system of RGB coupled white light, including a housing; a converging component, which includes a mounting seat connected to the housing, and a converging lens is arranged on the mounting seat; a light source, which includes a green light source, a red light source and a blue light source arranged in the housing; a reflector, which includes a first reflector, a second reflector and a third reflector respectively located at the output ends of the green light source, the red light source and the blue light source; a beam combining mirror, which includes a first beam combining mirror and a second beam combining mirror arranged in the cavity, and the light emitted by the green light source, the red light source and the blue light source is combined by the first beam combining mirror and the second beam combining mirror after reflection and emitted to the converging lens. The laser light source structure of the utility model integrates the three-color light source, and through a series of optical path structures, the light beams of different wavelengths are combined and converged to the converging lens and finally coupled into the optical fiber to obtain the white laser output from the optical fiber. The structure of the entire laser light source is compact, the number of components is small, and the difficulty of installation and maintenance is low, which effectively reduces the manufacturing cost and use cost of the laser light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0024] Figure 1 This is a schematic diagram of the RGB coupled white light laser light source structure connected to an optical fiber in a preferred embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of the RGB coupled white light laser light source structure of the preferred embodiment of the utility model;

[0026] Figure 3 This is a schematic structural diagram of a housing of an RGB-coupled white-light laser light source structure of a preferred embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of a converging component of an RGB coupled white light laser light source structure of a preferred embodiment of the utility model;

[0028] Figure 5 It is a structural schematic diagram of a connection socket of an RGB coupled white light laser light source structure of a preferred embodiment of the utility model;

[0029] Figure 6 It is a structural schematic diagram of a positioning frame of an RGB coupled white light laser light source structure of a preferred embodiment of the utility model.

[0030] Explanation of the reference numerals in the specification: 1. Shell; 2. Converging component; 21. Mounting seat; 211. Connecting seat; 212. Positioning frame; 22. Converging lens; 3. Light source; 31. Green light source; 32. Red light source; 33. Blue light source; 4. Reflector; 41. First reflector; 42. Second reflector; 43. Third reflector; 5. Beam combiner; 51. First beam combiner; 52. Second beam combiner; 6. Power supply connector; 7. Limit block. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] Embodiment 1

[0033] Reference Figure 1-Figure 6 As shown, the utility model is a RGB coupled white light laser light source structure, comprising:

[0034] A shell 1, wherein the shell 1 includes an internal cavity;

[0035] The converging component 2 includes a mounting seat 21, the mounting seat 21 is connected to the housing 1, and the mounting seat 21 is provided with a through hole extending along the length direction thereof and communicating with the cavity, and a converging lens 22 is coaxially arranged in the through hole;

[0036] The light source 3 comprises a green light source 31, a red light source 32 and a blue light source 33 which are respectively arranged in the cavity;

[0037] The reflector 4 includes a first reflector 41, a second reflector 42 and a third reflector 43, which are arranged in the cavity and located at the output ends of the green light source 31, the red light source 32 and the blue light source 33 respectively;

[0038] The beam combiner 5 includes a first beam combiner 51 and a second beam combiner 52 disposed in the cavity. The converging lens 22, the first beam combiner 51, the second beam combiner 52 and the third reflector 43 are sequentially spaced apart along the extension direction of the through hole. The first reflector 41 and the second reflector 42 are spaced apart from the first beam combiner 51 and the second beam combiner 52 in the width direction of the housing 1, respectively.

[0039] The light emitted by the green light source 31 , the red light source 32 and the blue light source 33 is combined by the first beam combiner 51 and the second beam combiner 52 after being reflected and emitted to the converging lens 22 .

[0040] Working process: the red light beam emitted by the red light source 32 is reflected by the second reflector 42 and then emitted to the second beam combining mirror 52 and reflected by the second beam combining mirror to the first beam combining mirror 51; the blue light beam emitted by the blue light source 33 is reflected by the third reflector 43 and then emitted to the second beam combining mirror 52 and is combined with the red light beam emitted to the first beam combining mirror 51 through the second beam combining mirror 52; the green light beam emitted by the green light source 31 is reflected by the first reflector 41 and then emitted to the first beam combining mirror 51 and is reflected to the converging lens 22. The combined red light beam and blue light beam are combined with the green light beam through the first beam combining mirror 51 and converged to the small-sized converging lens 22, and finally coupled into the optical fiber to obtain the white laser output from the optical fiber.

[0041] The laser light source structure of the utility model integrates three-color light sources, and through a series of optical path structures, beams of different wavelengths are combined and converged to the converging lens 22, and finally coupled into the optical fiber to obtain white laser output from the optical fiber. The entire laser light source has a compact structure, a small number of components, and low installation and maintenance difficulty, which effectively reduces the manufacturing cost and use cost of the laser light source.

[0042] Reference Figure 1 and Figure 2 As shown, further, the green light source 31 includes a first base, on which a green laser is mounted; the blue light source 33 includes a second base, on which a blue laser is mounted; and the red light source 32 includes a third base, on which a red laser is mounted. Specifically, the first base is mounted with a plurality of green lasers arranged along its length direction, a plurality of first reflectors 41 are provided and respectively located at the output end of each green laser, and a plurality of first reflectors 41 are arranged in a staggered manner; the blue light source 33 includes a plurality of blue lasers provided on the second base, a plurality of third reflectors 43 are provided and respectively located at the output end of each blue laser, and a plurality of third reflectors 43 are arranged in a staggered manner; the red light source 32 includes a plurality of red lasers provided on the third base, a plurality of second reflectors 42 are provided and respectively located at the output end of each red laser, and a plurality of second reflectors 42 are arranged in a staggered manner. It can be imagined that the green light source 31, the red light source 32 and the blue light source 33 can all emit multiple light beams, most of which converge at the converging lens after reflection and combination, achieving the effect of coupling multiple light beams through fewer components and having a higher coupling efficiency.

[0043] Furthermore, a power supply connector 6 is provided on the housing 1, and the power supply connector 6 includes a plurality of power supply pins, and the green light source 31, the blue light source 33, and the red light source 32 are respectively connected to a group of power supply pins. Specifically, the power supply connector 6 includes a plurality of power supply pins that can provide different voltages to meet the use requirements of each light source.

[0044] Furthermore, the first beam combiner 51 and the second beam combiner 52 have an included angle with the extension direction of the through hole, and the first reflector 41 , the second reflector 42 and the third reflector 43 are all parallel to the first beam combiner 51 and the second beam combiner 52 .

[0045] Reference Figure 4 , Figure 5 and Figure 6 As shown, further, the mounting seat 21 includes a connecting seat 211 and a positioning frame 212, both of which are tubular structures, a mounting hole is opened on one side of the housing 1, the connecting seat 211 is coaxially penetrated in the mounting hole, and a flange is installed on the connecting seat 211 and connected to the housing 1 by bolts, one end of the positioning frame 212 is threadedly connected to one end of the connecting seat 211 close to the cavity, and the other end of the positioning frame 212 is coaxially provided with a converging lens 22. It can be imagined that the connecting seat 211 and the positioning frame 212 can be connected and disassembled through threads, which is convenient for the installation and replacement of the converging lens 22.

[0046] Furthermore, an annular groove is coaxially formed on the circumferential surface of the connection seat 211, and a sealing ring is arranged in the annular groove. Specifically, the sealing ring is located on the section of the connection seat 211 located in the through hole to improve the sealing performance of the connection position.

[0047] Furthermore, three light source seats are arranged in the cavity, and the green light source 31, the red light source 32 and the blue light source 33 are arranged on a light source seat respectively. The light source seat is installed in the housing 1 by bolt connection, which is convenient for installing and removing the light source and can improve the work efficiency.

[0048] Furthermore, a stopper block 7 for limiting the first beam combining mirror 51 and the second beam combining mirror 52 is further provided in the housing 1. Specifically, the stopper block 7 includes two stopper surfaces perpendicular to each other. When the first beam combining mirror 51 or the second beam combining mirror 52 is installed, the two surfaces of the first beam combining mirror 51 or the second beam combining mirror 52 are respectively in close contact with the two stopper surfaces of the stopper block 7, so that the installation angle and posture of the two beam combining mirrors can be ensured.

[0049] Furthermore, the converging lens 22 is a blue light aspherical lens.

[0050] Embodiment 2

[0051] The utility model also discloses a light source system, comprising the RGB coupled white light laser light source structure as in the first embodiment.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A laser light source structure of RGB coupled white light, characterized in that: include: a housing, the housing comprising an internal cavity; A converging component, the converging component comprising a mounting seat, the mounting seat being connected to the housing, and the mounting seat being provided with a through hole extending along its length direction and communicating with the cavity, wherein a converging lens is coaxially provided in the through hole; A light source, comprising a green light source, a red light source and a blue light source respectively disposed in the cavity; A reflector, wherein the reflector comprises a first reflector, a second reflector and a third reflector, wherein the first reflector, the second reflector and the third reflector are arranged in the cavity and are respectively located at output ends of the green light source, the red light source and the blue light source; A beam combiner, wherein the beam combiner comprises a first beam combiner and a second beam combiner disposed in the cavity, wherein the converging lens, the first beam combiner, the second beam combiner and the third reflector are sequentially spaced apart along the extension direction of the through hole, and the first reflector and the second reflector are spaced apart from the first beam combiner and the second beam combiner respectively in the width direction of the housing; The light emitted by the green light source, the red light source and the blue light source is combined by the first beam combiner and the second beam combiner after being reflected and emitted to the converging lens.

2. The RGB coupled white light laser source structure according to claim 1, characterized in that: The green light source comprises a first base, on which a green laser is mounted; the blue light source comprises a second base, on which a blue laser is mounted; and the red light source comprises a third base, on which a red laser is mounted.

3. The RGB coupled white light laser source structure according to claim 1, characterized in that: The housing is provided with a power supply connector, which includes a plurality of power supply pins. The green light source, the blue light source and the red light source are respectively connected to a group of the power supply pins.

4. The RGB coupled white light laser source structure according to claim 1, characterized in that: The first beam combiner, the second beam combiner and the extension direction of the through hole form an included angle, and the first reflector, the second reflector and the third reflector are all parallel to the first beam combiner and the second beam combiner.

5. The RGB coupled white light laser source structure according to claim 1, characterized in that: The mounting seat includes a connecting seat and a positioning frame, both of which are tubular structures. A mounting hole is opened on one side of the shell, the connecting seat is coaxially inserted into the mounting hole, and a flange is installed on the connecting seat and is connected to the shell by bolts. One end of the positioning frame is threadedly connected to one end of the connecting seat close to the cavity, and the converging lens is coaxially arranged on the other end of the positioning frame.

6. The RGB coupled white light laser source structure according to claim 5, characterized in that: An annular groove is coaxially formed on the circumferential surface of the connecting seat, and a sealing ring is arranged in the annular groove.

7. The RGB coupled white light laser source structure according to claim 1, characterized in that: Three light source seats are arranged in the cavity, and the green light source, the red light source and the blue light source are arranged on one of the light source seats respectively.

8. The RGB coupled white light laser source structure according to claim 1, characterized in that: The housing is also provided with a limiting block for limiting the first beam combining mirror and the second beam combining mirror.

9. The RGB coupled white light laser source structure according to claim 1, characterized in that: The converging lens adopts a blue light aspherical lens.

10. A light source system, characterized in that: The invention comprises a laser light source structure of RGB coupled white light as described in any one of claims 1 to 9.

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