Optical fiber point light source capable of enhancing light intensity of corresponding wave band

Abstract

The utility model discloses an optical fiber point light source capable of enhancing light intensity of a corresponding wave band, which comprises a light source shell, a hollow shell inner cavity is formed in the light source shell, a first through hole and a second through hole are respectively arranged on two sides of the light source shell, and the second through hole is connected with an optical fiber cable; the light combining mirror is arranged in the inner cavity of the shell, the setting angle of the light combining mirror is 45 degrees, the light combining mirror is arranged between the first through hole and the second through hole, and the first through hole and the second through hole are separated; the first point light source module is fixedly connected to the first through hole, the second point light source module is fixedly connected to the third through hole, and the axis of the first point light source module and the axis of the optical fiber line are located on the same horizontal line. According to the utility model, the electrode foil can be accurately detected, and errors caused by jumping of the electrode foil during suspension movement can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of detection light sources, and particularly relates to an optical fiber point light source capable of enhancing the light intensity of a corresponding wavelength band. Background Art

[0002] In the field of machine vision, optical fiber light sources are commonly used light sources. An optical fiber light source is a device that uses optical fibers to transmit optical signals and is widely used in multiple fields such as communication, medical treatment, and industrial detection. According to different application requirements and working principles, optical fiber light sources can be divided into various types, and optical fiber point light sources are one of them.

[0003] The method of generating a point light source by means of an optical fiber is very simple. A beam of laser is input from one end of the optical fiber, and the light output at the other end of the optical fiber can be used as a point light source, that is, the so-called optical fiber point light source.

[0004] The light intensity of an optical fiber point light source has a great advantage over that of a conventional point light source. Since the optical fiber is relatively short, the loss of light during optical fiber transmission can be ignored. The intensity of the optical fiber point light source depends on the intensity of the incident light at the other end of the optical fiber and the coupling degree between the incident light beam and the optical fiber. However, in the application of an optical fiber point light source, in addition to its intensity, more attention is paid to the size of the "point" of the point light source, the divergence angle of the point light source, and the light intensity. When a conventional optical fiber point light source is directly irradiated by an LED, due to the receiving area of the optical fiber, the light intensity reaching the surface of the optical fiber may be insufficient. When the illuminance cannot be improved due to the characteristics of the lamp beads and the number of directly irradiated lamp beads, the illuminance received by the optical fiber cannot meet the requirements. Summary of the Invention

[0005] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide an optical fiber point light source capable of enhancing the light intensity of a corresponding wavelength band, which can accurately detect the electrode foil without generating errors due to the jumping of the electrode foil during suspended movement.

[0006] To achieve the above purpose, the utility model provides an optical fiber point light source capable of enhancing the light intensity of a corresponding wavelength band, including:

[0007] A light source housing, a hollow housing cavity is formed inside the light source housing, a first through hole and a second through hole are respectively arranged on both sides of the light source housing, and the second through hole is connected with an optical fiber line;

[0008] A light combining mirror, the light combining mirror is arranged in the housing cavity, the setting angle of the light combining mirror is 45°, and the light combining mirror is placed between the first through hole and the second through hole, separating the first through hole and the second through hole;

[0009] The first point light source module and the second point light source module, the first point light source module is fixedly connected to the first through hole, the second point light source module is fixedly connected to the third through hole, the axis of the first point light source module and the axis of the optical fiber line are on the same horizontal line, and the extension line of the axis of the second point light source module is perpendicular to and intersects the extension lines of the axes of the first point light source module and the optical fiber line, and the intersection point is placed on the light combining mirror.

[0010] Further, the reflectivity of the end of the light combining mirror adjacent to the optical fiber line is ≥99%, and the light transmittance of the other end of the light combining mirror is ≥99%. It can reflect the light of the second point light source directly above the light combining mirror to the light inlet of the optical fiber line. Similarly, another single light transmittance ≥99% can achieve allowing the light of the first point light source to pass through and enter the light inlet.

[0011] Further, the light source housing includes a front end plate, a rear end plate, a left side plate, a right side plate, an upper top plate and a lower bottom plate. The first through hole is arranged at the center of the left side plate, the second through hole is arranged at the center of the right side plate, and the third through hole is arranged at the center of the upper top plate. It is convenient for the assembly and positioning of each light source.

[0012] Further, a first clamping groove is arranged on the upper side of the inner wall of the left side plate, a second clamping groove is arranged on the lower side of the right side plate, and both ends of the light combining mirror are inserted into the first clamping groove and the second clamping groove respectively, so that the light combining mirror is installed at a 45° angle inside the light source housing. The light combining mirror can be installed more quickly and conveniently by means of clamping.

[0013] Further, it also includes an optical fiber ring. The optical fiber ring is provided with an inner hole penetrating through the optical fiber ring. One end of the optical fiber ring is fixedly connected to one side of the light source housing, and the inner hole is communicated with the second through hole. The other end of the optical fiber ring far from the inner hole is provided with a stepped mounting portion, and the optical fiber line is fixedly connected to the stepped mounting portion. By arranging the optical fiber ring, the optical fiber line can be fixed more stably, and it is ensured that the light inlet of the light and the point light source are on the same horizontal line.

[0014] Further, the first point light source module includes a first heat dissipation bracket and a first point light source. The front end of the first heat dissipation bracket is recessed to form a first light source installation cavity. The first point light source is fixedly connected to the first light source installation cavity. The first heat dissipation bracket is fixedly connected to the side of the light source housing provided with the first through hole, and the first point light source is aligned with the first through hole;

[0015] The second point light source module includes a second light source heat dissipation bracket and a second point light source. The front end of the second light source heat dissipation bracket is concave to form a second light source installation cavity. The second point light source is fixedly connected in the second light source installation cavity. The second light source heat dissipation bracket is fixedly connected to the side of the light source housing where the third through hole is provided, and the second point light source faces the third through hole. Through the first heat dissipation bracket and the second light source heat dissipation bracket, not only can the point light source be fixed, but also a good heat dissipation function can be achieved to ensure the stable operation of the point light source.

[0016] Further, a first connecting member is provided between the first heat dissipation bracket and the light source housing. The first connecting member is a hollow tubular structure. The front end of the first connection extends to form a first insertion portion. The first insertion portion passes through the first through hole and is placed in the inner cavity of the housing. The axes of the first point light source, the first connecting member, and the optical fiber line are all on the same horizontal line.

[0017] A second connecting member is also provided between the second light source heat dissipation bracket and the light source housing. The second connecting member is a hollow tubular structure. The front end of the second connection extends to form a second insertion portion. The second insertion portion passes through the third through hole and is placed in the inner cavity of the housing. The axes of the second point light source and the second connecting member are both on the same horizontal line. By providing the first insertion portion and the second insertion portion, the light rays of the first point light source and the second point light source can be directly irradiated onto the light combining mirror, reducing the influence of the environment on the light and increasing the light intensity.

[0018] Further, a conical first transition portion is provided on the first connecting member; a conical second transition portion is provided on the second connecting member. Through the conical first transition portion and the second transition portion, the light source can be better focused, and the light intensity can be enhanced.

[0019] Further, a first guiding portion is also provided between the first transition portion and the first insertion portion, and a second guiding portion is also provided between the second transition portion and the second insertion portion. Through the first guiding portion and the second guiding portion, the connection with the first heat dissipation bracket and the second light source heat dissipation bracket can be realized, and the first point light source and the second point light source can be respectively wrapped to avoid the leakage of light and affect the light intensity.

[0020] Further, first heat dissipation fins are provided on the outer side of the first connecting member, and second heat dissipation fins are provided on the outer side of the second connecting member. The heat dissipation functions of the first connecting member and the second connecting member are improved, and further the working stability of the light source is ensured.

[0021] Compared with the prior art, the utility model has the following advantages: The utility model solves the problem of insufficient light intensity of the fiber optic point light source under a small fiber diameter. A beam combining mirror placed at 45° is arranged inside the light source housing to enhance the light intensity on the fiber receiving surface. Specifically, a positive lens is used on one side of the beam combining mirror to transmit 99% of the original light intensity of the horizontally arranged first point light source module. Then, a second point light source is added directly above the beam combining mirror. When the light from the light source directly above shines downward onto the surface of the 45° beam combining mirror, after surface reflection, 99% of the light is irradiated onto the surface of the fiber optic cable. The light after direct and reflected mixing will increase the light intensity on the fiber receiving surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 FIG. 1 is a schematic structural diagram of a fiber optic point light source capable of enhancing the light intensity of a corresponding wavelength band in Embodiment 1 of the present utility model;

[0024] Figure 2 FIG. Figure 1 is a schematic cross-sectional view taken along line A-A in FIG. 1;

[0025] Figure 3 FIG. Figure 1 is an exploded view of FIG. 1;

[0026] Figure 4 FIG. 3 is a schematic light ray path diagram of the present utility model.

[0027] In the figure, it includes:

[0028] 1. Light source housing; 11. Inner cavity of the housing; 12. First through hole; 13. Second through hole; 14. Front end plate; 15. Rear end plate; 16. Left side plate; 161. First clamping groove; 17. Right side plate; 171. Second clamping groove; 18. Upper top plate; 19. Lower bottom plate; 10. Third through hole; 2. Light combining lens; 21. Reflective surface; 22. Enhancement lens; 3. First point light source module; 31. First heat dissipation bracket; 32. First point light source; 33. First light source installation cavity; 4. Second point light source module; 41. Second light source heat dissipation bracket; 42. Second point light source; 43. Second light source installation cavity; 5. Optical fiber line; 6. Optical fiber ring; 61. Step installation part; 7. First connecting piece; 71. First insertion part; 72. First transition part; 73. First guiding part; 74. First heat dissipation fin; 8. Second connecting piece; 81. Second insertion part; 82. Second transition part; 83. Second guiding part; 84. Second heat dissipation fin. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only one embodiment of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0032] Please refer to Figures 1 to 4 , Embodiment 1 of the present invention provides an optical fiber point light source capable of enhancing the light intensity of a corresponding wavelength band, including a light source housing 1, a light combining lens 2, a first point light source module 3 and a second point light source module 4;

[0033] In this embodiment, a hollow inner cavity 11 is formed inside the light source housing 1. A first through hole 12 and a second through hole 13 are respectively provided on both sides of the light source housing 1. Specifically, the light source housing 1 includes a front end plate 14, a rear end plate 15, a left side plate 16, a right side plate 17, an upper top plate 18, and a lower bottom plate 19. The front end plate 14, the rear end plate 15, the left side plate 16, the right side plate 17, the upper top plate 18, and the lower bottom plate 19 respectively enclose and fix to form the light source housing 1 with the built-in inner cavity 11 as shown in Figure 1 . The above-mentioned first through hole 12 is provided at the center of the left side plate 16, the second through hole 13 is provided at the center of the right side plate 17, and the third through hole 10 is provided at the center of the upper top plate 18;

[0034] The second through hole 13 is connected to an optical fiber line 5. In this embodiment, in order to realize the connection between the optical fiber line 5 and the second through hole 13, an optical fiber ring 6 is further provided. The optical fiber ring 6 is provided with an inner hole penetrating through the optical fiber ring 6. One end of the above-mentioned optical fiber ring 6 is fixedly connected to one side of the right side plate 17, and the inner hole communicates with the second through hole 13. The other end of the optical fiber ring 6 away from the inner hole is provided with a stepped mounting portion 61, and the optical fiber line 5 is fixedly connected to the stepped mounting portion 61;

[0035] As shown in Figure 2 , the beam combining mirror 2 is arranged inside the inner cavity 11 of the housing. Specifically, a first clamping groove 161 is provided on the upper side of the inner wall of the left side plate 16, and a second clamping groove 171 is provided on the lower side of the right side plate 17. Both ends of the beam combining mirror 2 are respectively inserted into the first clamping groove 161 and the second clamping groove 171, so that the beam combining mirror 2 is installed inside the light source housing 1 at an angle of 45°. In this way, the beam combining mirror 2 is placed between the first through hole 12 and the second through hole 13, separating the first through hole 12 and the second through hole 13. In particular, the beam combining mirror 2 uses an increasing lens 22 as the main body, and a reflecting surface 21 is provided on the surface adjacent to the optical fiber line 5, so that the reflectivity of one end of the beam combining mirror 2 adjacent to the optical fiber line 5 is ≥99%, and the light transmittance of the other end of the beam combining mirror 2 is ≥99%.

[0036] The first point light source module 3 is fixedly connected to the first through hole 12, and the second point light source module 4 is fixedly connected to the third through hole 10. The axis of the first point light source module 3 and the axis of the optical fiber line 5 are on the same horizontal line. The extension line of the axis of the second point light source module 4 is perpendicular to the extension lines of the axes of the first point light source module 3 and the optical fiber line 5, and the intersection point is placed on the beam combining mirror 2;

[0037] The above-mentioned first point light source module 3 includes a first heat dissipation bracket 31 and a first point light source 32. The front end of the first heat dissipation bracket 31 is recessed to form a first light source installation cavity 33. The first point light source 32 is fixedly connected in the first light source installation cavity 33. The first heat dissipation bracket 31 is fixedly connected to the side of the light source housing 1 where the first through hole 12 is provided, and the first point light source 32 is aligned with the first through hole 12. A first connecting member 7 is further provided between the first heat dissipation bracket 31 and the light source housing 1. The first connecting member 7 is a hollow tubular structure. The front end of the first connection extends to form a first insertion portion 71. The first insertion portion 71 passes through the first through hole 12 and is placed in the inner cavity 11 of the housing. The axes of the first point light source 32, the first connecting member 7, and the optical fiber line 5 are all on the same horizontal line. A tapered first transition portion 72 is provided on the first connecting member 7. A first guiding portion 73 is further provided between the first transition portion 72 and the first insertion portion 71. The first guiding portion 73 is used to wrap the first point light source 32 and connect to the first heat dissipation bracket 31;

[0038] The second point light source module 4 includes a second light source heat dissipation bracket 41 and a second point light source 42. The front end of the second light source heat dissipation bracket 41 is recessed to form a second light source installation cavity 43. The second point light source 42 is fixedly connected in the second light source installation cavity 43. The second light source heat dissipation bracket 41 is fixedly connected to the side of the light source housing 1 where the third through hole 10 is provided, and the second point light source 42 is aligned with the third through hole 10. A second connecting member 8 is further provided between the second light source heat dissipation bracket and the light source housing 1. The second connecting member 8 is a hollow tubular structure. The front end of the second connection extends to form a second insertion portion 81. The second insertion portion 81 passes through the third through hole 10 and is placed in the inner cavity 11 of the housing. The axes of the second point light source 42 and the second connecting member 8 are both on the same horizontal line. A tapered second transition portion 82 is provided on the second connecting member 8. A second guiding portion 83 is further provided between the second transition portion 82 and the second insertion portion 81. The second guiding portion 83 is used to wrap the second point light source 42.

[0039] To further ensure the stability of the light source, a first heat dissipation fin 74 is provided on the outer side of the first connecting member 7, and a second heat dissipation fin 84 is provided on the outer side of the second connecting member 8.

[0040] Brief description of the working principle of the present utility model: The present utility model opens a first through hole 12 and a second through hole 13 on the left and right sides of the light source housing 1, and installs a first point light source module 3 and an optical fiber line 5, so that the axes of the two can be on the same horizontal line, that is, the direct light of the first point light source module 3 can enter the light inlet of the optical fiber. A second point light source module 4 is provided at the center of the upper top plate 18, so that the extended line of the axis of the second point light source module 4 is perpendicular to and intersects the extended line of the axes of the first point light source module 3 and the optical fiber line 5, and the intersection point is just placed on the light combining mirror 2. The light combining mirror 2 is arranged in the inner cavity 11 of the housing at 45°. The light combining mirror 2 takes the positive lens 22 as the main body, and a reflecting surface 21 is provided on the positive lens 22, so that the transmittance of one side of the light combining mirror 2 can reach ≥99%, and the reflectivity of the other side can reach ≥99%. One end of the light combining mirror 2 provided with the reflecting surface 21 is adjacent to the second through hole 13. The light emitted by the second point light source module 4 enters the second through hole 13 through the reflecting surface 21 and reaches the light inlet of the optical fiber line 5. The light emitted by the first point light source module 3 can directly pass through the light combining mirror 2 and enter the second through hole 13 to reach the light inlet of the optical fiber line 5. In this way, the light intensity of the double light source to improve the received illuminance of the optical fiber is realized.

[0041] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A fiber point light source capable of enhancing the light intensity of a corresponding wavelength band, characterized in that: include: A light source housing (1), wherein a hollow housing cavity (11) is formed inside the light source housing (1), a first through hole (12) and a second through hole (13) are respectively provided on two sides of the light source housing (1), and an optical fiber line (5) is connected to the second through hole (13); A light combining mirror (2), the light combining mirror (2) being arranged in the inner cavity (11) of the housing, the setting angle of the light combining mirror (2) being 45° and the light combining mirror (2) being placed between the first through hole (12) and the second through hole (13), so as to separate the first through hole (12) and the second through hole (13); A first point light source module (3) and a second point light source module (4), wherein the first point light source module (3) is fixedly connected to the first through hole (12), and the second point light source module (4) is fixedly connected to the third through hole (10), the axis of the first point light source module (3) and the axis of the optical fiber (5) are on the same horizontal line, and the axis extension line of the second point light source module (4) intersects perpendicularly with the axis extension lines of the first point light source module (3) and the optical fiber (5), and the intersection point is placed on the light combining mirror (2).

2. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 1, characterized in that: The reflectivity of one end of the light combining mirror (2) adjacent to the optical fiber line (5) is ≥99%, and the transmittance of the other end of the light combining mirror (2) is ≥99%.

3. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 1, characterized in that: The light source housing (1) comprises a front end plate (14), a rear end plate (15), a left side plate (16), a right side plate (17), an upper top plate (18) and a lower bottom plate (19); the first through hole (12) is arranged at the exact center of the left side plate (16), the second through hole (13) is arranged at the exact center of the right side plate (17), and the third through hole (10) is arranged at the exact center of the upper top plate (18).

4. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 3, characterized in that: A first snap-in groove (161) is provided on the upper side of the inner wall of the left side plate (16), and a second snap-in groove (171) is provided on the lower side of the right side plate (17); two ends of the light-combining mirror (2) are respectively plugged into the first snap-in groove (161) and the second snap-in groove (171), so that the light-combining mirror (2) is installed inside the light source housing (1) at an angle of 45 degrees.

5. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 1, characterized in that: It also comprises an optical fiber ring (6), the optical fiber ring (6) being provided with an inner hole penetrating the optical fiber ring (6), one end of the optical fiber ring (6) being fixedly connected to one side of the light source housing (1), and the inner hole being connected to the second through hole (13), and the other end of the optical fiber ring (6) away from the inner hole being provided with a stepped mounting portion (61), and the optical fiber line (5) being fixedly connected to the stepped mounting portion (61).

6. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 1, characterized in that: The first point light source module (3) comprises a first heat dissipation bracket (31) and a first point light source (32); the front end of the first heat dissipation bracket (31) is concave to form a first light source installation cavity (33); the first point light source (32) is fixedly connected to the first light source installation cavity (33); the first heat dissipation bracket (31) is fixedly connected to a side of the light source housing (1) provided with a first through hole (12), and the first point light source (32) is directly opposite to the first through hole (12); The second point light source module (4) comprises a second light source heat dissipation bracket (41) and a second point light source (42); the front end portion of the second light source heat dissipation bracket (41) is concave to form a second light source installation cavity (43); the second point light source (42) is fixedly connected in the second light source installation cavity (43); the second light source heat dissipation bracket (41) is fixedly connected to a side of the light source housing (1) provided with a third through hole (10), and the second point light source (42) is directly opposite to the third through hole (10).

7. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 6, characterized in that: A first connecting member (7) is further provided between the first heat dissipation bracket (31) and the light source housing (1); the first connecting member (7) is a hollow tubular structure; the front end of the first connecting member extends to form a first insertion portion (71); the first insertion portion (71) passes through the first through hole (12) and is placed in the housing inner cavity (11); the axes of the first point light source (32), the first connecting member (7) and the optical fiber (5) are all on the same horizontal line; A second connecting member (8) is also provided between the second light source heat dissipation bracket (41) and the light source housing (1); the second connecting member (8) is a hollow tubular structure; the front end of the second connecting member (8) extends to form a second insertion portion (81); the second insertion portion (81) passes through the third through hole (10) and is placed in the housing inner cavity (11); the axes of the second point light source (42) and the second connecting member (8) are both on the same horizontal line.

8. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 7, characterized in that: A conical first transition portion (72) is provided on the first connecting member (7); and a conical second transition portion (82) is provided on the second connecting member (8).

9. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 8, characterized in that: A first guide portion (73) is further provided between the first transition portion (72) and the first insertion portion (71), and a second guide portion (83) is further provided between the second transition portion (82) and the second insertion portion (81).

10. The optical fiber point light source capable of enhancing the light intensity of the corresponding wavelength band according to claim 7, characterized in that: A first heat dissipation fin (74) is provided on the outer side of the first connecting member (7), and a second heat dissipation fin (84) is provided on the outer side of the second connecting member (8).

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