Laser module and optical fiber lighting system

Abstract

The utility model discloses a laser module and an optical fiber illumination system, and belongs to the technical field of optical fiber illumination. The laser module comprises a tube shell, a coupling lens, a connecting tube and a tail fiber assembly, the coupling lens is installed on the tube shell, the tube shell is used for installing a laser, and the coupling lens is used for coupling laser emitted by the laser into the tail fiber assembly. The end, close to the coupling lens, of the connecting pipe is arranged on the pipe shell in a sleeving mode, and the end, away from the coupling lens, of the connecting pipe is arranged on the tail fiber assembly in a sleeving mode. Through the design of the tube shell, the laser, the coupling lens, the connecting tube and other coupling elements are sequentially installed on the tube shell, and the installation precision and the final coupling efficiency of the coupling elements are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of fiber optic lighting, and in particular to a laser module and a fiber optic lighting system. Background Art

[0002] Fiber optic lighting is a new lighting method in recent years. Due to the unique physical properties of optical fiber itself, fiber optic lighting is used in various indications, displays, decorations and backlight sources. It is a typical green lighting source. It has high energy saving, long life, small size and strong directionality.

[0003] However, in the field of fiber-optic lighting, the lasers used in fiber-optic lighting have large divergence angles and are difficult to couple. The design of optical devices also faces relatively severe challenges. Utility Model Content

[0004] The present application provides a laser module and an optical fiber lighting system to solve the problems of difficult coupling and low coupling efficiency of the laser module of the optical fiber lighting system.

[0005] On one hand, the present application provides a laser module, which includes a tube shell, a coupling lens, a connecting tube and a pigtail assembly. The coupling lens is mounted on the tube shell; the tube shell is used to mount a laser; the coupling lens is used to couple the laser emitted by the laser into the pigtail assembly; the end of the connecting tube close to the coupling lens is sleeved on the tube shell, and the end of the connecting tube away from the coupling lens is sleeved on the pigtail assembly.

[0006] According to an embodiment provided by the utility model, a stepped hole is provided in the tube shell, and the stepped hole sequentially forms a plurality of stepped section holes, and the plurality of stepped section holes sequentially install the laser and the coupling lens, wherein the plurality of stepped section holes include stepped section holes respectively located at both ends of the stepped hole, the stepped section hole at one end of the stepped hole is used to install the laser, and the stepped section hole at the other end of the stepped hole is connected to the connecting tube.

[0007] According to an embodiment provided by the utility model, the tube shell is provided with a flange at one end where the laser is mounted.

[0008] According to an embodiment provided by the utility model, the laser module further comprises the laser, and one end of the laser facing away from the coupling lens protrudes out of the tube shell.

[0009] According to an embodiment provided by the utility model, the laser module further includes a sleeve, the sleeve is sleeved on the tube shell, and the connecting tube and part of the pigtail assembly are located in the sleeve.

[0010] According to an embodiment provided by the utility model, a gap is provided between the connecting tube and the pigtail assembly, and a connecting glue is contained in the gap to connect the connecting tube and the pigtail assembly.

[0011] According to an embodiment provided by the utility model, the pigtail assembly includes a ferrule, a pin body and an optical fiber, the ferrule is sleeved on the optical fiber, the connecting tube is sleeved on one end of the ferrule close to the tube shell, and the optical fiber receives and transmits the laser transmitted by the coupling lens; the pin body is provided with a through hole to clamp the end of the ferrule away from the tube shell at one end in the through hole.

[0012] According to an embodiment provided by the utility model, the pigtail assembly further includes a fiber optic connector and a pigtail protective cover; the fiber optic connector is connected to the optical fiber to connect the optical fiber to an optical cable in the lighting system;

[0013] The pigtail protective sleeve is sleeved on the outer periphery of the optical fiber, and the pin body is located inside the pigtail protective sleeve.

[0014] According to an embodiment provided by the utility model, the pin body is located in the sleeve; and one end of the pigtail protective sleeve wrapping the pin body is located in the sleeve.

[0015] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a fiber optic lighting system, which includes the above laser module.

[0016] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a laser module and a fiber optic lighting system. Through the design of the tube shell, the laser, coupling lens, connecting tube and other coupling elements are sequentially installed on the tube shell, ensuring the installation accuracy of each coupling element and the final coupling efficiency; the coupling lens performs spot shaping and focusing on the divergent light of the laser to ensure the coupling efficiency; the setting of the connecting tube plays a role of coarse positioning for coupling, which can improve the working efficiency during coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a laser module according to an embodiment of the present application;

[0018] Figure 2 yes Figure 1 A partial cross-sectional view of the laser module in the illustrated embodiment;

[0019] Figure 3 yes Figure 1 A cross-sectional view of the tube shell in the illustrated embodiment;

[0020] Figure 4 yes Figure 1 An exploded view of the pigtail assembly of the illustrated embodiment;

[0021] Figure 5 yes Figure 1 A cross-sectional view of the pigtail assembly of the illustrated embodiment;

[0022] Figure 6 is a three-dimensional exploded view of a laser module according to another embodiment of the present application;

[0023] Figure 7 yes Figure 6 A partial cross-sectional view of the laser module in the illustrated embodiment;

[0024] Figure 8 yes Figure 6 An assembly diagram of the laser module of the illustrated embodiment;

[0025] Fig. 9 It is a structural schematic diagram of an embodiment of the fiber optic lighting system provided in the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 is a schematic structural diagram of a laser module according to an embodiment of the present application. Figure 2 yes Figure 1 A partial cross-sectional view of the laser module in the illustrated embodiment; Figure 3 yes Figure 1 A cross-sectional view of the tube package in the illustrated embodiment.

[0030] The laser module 100 includes a tube shell 1, a coupling lens 2, a connecting tube 3, a laser 4 and a pigtail assembly 5. The tube shell 1 is used to install the coupling lens 2, the connecting tube 3 and the laser 4. The coupling lens 2 is used to couple the laser emitted by the laser 4 into the pigtail assembly 5. The connecting tube 3 is used to connect the tube shell 1 and the pigtail assembly 5. The laser 4 serves as a light source and can emit laser. The pigtail assembly 5 is used to receive the laser that passes through the coupling lens 2. The laser emitted by the laser 4 is first transmitted in the tube shell 1, then passes through the coupling lens 2, then is transmitted in the connecting tube 3, and is finally received by the pigtail assembly 5.

[0031] Please continue reading Figure 2 and Figure 3 , a stepped hole is provided in the tube shell 1, and the stepped hole forms a plurality of stepped holes in sequence along the axis, including a first step hole 12, a second step hole 13, a third step hole 14 and a fourth step hole 15; wherein the first step hole 12 is used to install the laser 4, the second step hole 13 is used to install the coupling lens 2, the third step hole 14 is used to install the coupling lens 2, and the fourth step hole 15 is used to sleeve the connecting tube 3. Through the design of the stepped hole on the tube shell 1, the optical elements such as the coupling lens 2, the connecting tube 3 and the laser 4 are installed on the tube shell 1, which ensures the installation accuracy of each optical element and the final coupling efficiency, wherein the setting of the connecting tube 3 on the tube shell 1 plays a role of coarse positioning for coupling, which can improve the working efficiency during coupling.

[0032] In some embodiments, the tube shell 1 may be an integrated tube shell, and the tube shell 1 may be made of ceramic or any other suitable material. A plurality of stepped holes may be provided in the tube shell 1 according to the number of optical elements.

[0033] Please continue reading Figure 2 The tube shell 1 is provided with a flange 11 at one end where the laser 4 is installed, and the laser module 100 can be installed in the optical fiber lighting system through the flange 11.

[0034] In some embodiments, the flange is provided with screw holes for screw fixing when the laser module is installed; the flange on the tube shell can also be set as a mounting part in any form, such as snap-on, adhesive or clamping.

[0035] Continue reading Figure 2, the laser 4 is mounted on the tube shell 1, and is installed in the first step hole 12 of the above-mentioned tube shell 1. At the same time, the end of the laser 4 close to the coupling lens 2 is glued to the tube shell 1; the laser 4 emits a laser, passes through the coupling lens 2, is transmitted in the connecting tube 3, and is finally received by the pigtail assembly 5; through the matching tolerance control, the end of the laser 4 facing away from the coupling lens 2 protrudes from the tube shell 1, and when the laser module 100 is installed in the optical fiber lighting system through the flange 11, it can be ensured that the laser 4 is tightly connected to the heat sink, and fully contacted with each other first, so as to ensure that the heat dissipation path is the shortest and the heat dissipation thermal resistance is the smallest, which is beneficial to the heat dissipation of the entire laser module 100, thereby ensuring its stability and service life.

[0036] In some embodiments, the tolerance refers to the absolute value of the difference between the maximum limit dimension allowed and the minimum limit dimension allowed, or the difference between the upper deviation allowed and the lower deviation allowed. The dimensional tolerance is an absolute value without a sign.

[0037] In some embodiments, the laser 4 is a TO-packaged laser, which has the main advantages of good heat dissipation performance and can be easily equipped with a heat sink or other active cooling system. Therefore, it is suitable for packaging various medium-power circuits, such as power supplies, power amplifiers, MOS tubes, etc. The glue used to bond the laser 4 and the tube shell 1 can be any suitable glue such as thermosetting glue. The TO package is a coaxial package, which is the abbreviation of Transistor Outline package in English. The TO package consists of a TO tube seat and a TO tube cap. The TO tube seat serves as the base of the packaged component and provides power for it; the TO tube cap can achieve smooth optical signal transmission; these two components form a sealed package to protect sensitive semiconductor components. MOS is the abbreviation of MOSFET, which is metal- Oxide semiconductors Field Effect transistor , short for Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET).

[0038] Please continue reading Figure 2In order to improve the coupling efficiency, a coupling lens 2 is used to perform spatial spot shaping. The coupling lens 2 in the laser module 100 includes a collimating lens 21 and a focusing lens 22. The collimating lens 21 is installed in the second step hole 13 of the tube shell 1, and the focusing lens 22 is installed in the third step hole 14 of the tube shell 1. First, the divergent laser light beam emitted by the laser 4 is collimated by the collimating lens 21. Collimation is to turn the divergent light into collimated light, which is generally speaking to make the light beams parallel. Then, the laser light beam collimated by the collimating lens 21 is converged by the focusing lens 22. The converged light beam passes through the connecting tube 3 and finally converges at the focal position to form a very small light spot, which is convenient for the optical fiber component 5 to receive and couple.

[0039] It is understandable that the light beams emitted by the laser 4 are divergent, that is, two adjacent light beams will become increasingly distant from each other after propagation.

[0040] Please continue reading Figure 2 , the connecting tube 3 is installed in the fourth step hole 15 of the tube shell 1, and the step hole is connected to the connecting tube. Specifically, the end of the connecting tube 3 close to the focusing lens 22 is sleeved in the fourth step hole 15 of the tube shell 1; the end of the connecting tube 3 away from the focusing lens 22 is sleeved on the pigtail assembly 5. The laser beam emitted by the laser 4 transmitted in the connecting tube 3 and transmitted through the coupling lens 2 is finally received by the pigtail assembly 5.

[0041] Please continue reading Figure 2 , Figure 4 and Figure 5 , Figure 4 yes Figure 1 An exploded view of the pigtail assembly of the illustrated embodiment; Figure 5 yes Figure 1 A cross-sectional view of a pigtail assembly of the illustrated embodiment. The pigtail assembly 5 comprises a ferrule 51, a pin body 52, an optical fiber 53, a pigtail protective sleeve 54 and an optical fiber connector 55. The pigtail assembly 5 is connected to the connecting tube 3 via the ferrule 51. One end of the ferrule 51 is sleeved on the connecting tube 3, and the other end is sleeved and fixed by one end of the pin body. The optical fiber 53 is sleeved in the ferrule 51; one end of the pin body 52 is sleeved on the optical fiber, and the other end is used to sleeve and fix the ferrule 51; one end of the pigtail protective sleeve 54 is sleeved on the optical fiber 53, and the other end covers the ferrule body; the optical fiber connector 55 is connected to the optical fiber 53; the optical fiber 53 is used to receive and couple the laser beam passing through the coupling lens 2, and further transmit it to the optical fiber connector 55.

[0042] In some embodiments, the ferrule 51 is in a through-tube shape, and the end of the ferrule 51 close to the tube shell 1 is sleeved on the connecting tube 3, and the end of the ferrule 51 away from the tube shell 1 is sleeved with a pin body 52, and the end of the optical fiber 53 close to the tube shell 1 is sleeved in the through hole of the ferrule 51. A small gap is set at the position where the ferrule 51 and the connecting tube 3 are sleeved. After the laser module is coupled, the gap can accommodate the connecting glue to connect the connecting tube 3 and the ferrule 51. The existence of the gap can be used to adjust the gap in a small range to adjust the relative position of the ferrule 51 and the connecting tube 3, so that the small light spot converged by the coupling lens 2 is coupled with the optical fiber 53 in the ferrule 51 to improve the coupling efficiency. In addition, the design of the small gap makes it possible to control the amount of connecting glue required after the coupling system is coupled, thereby ensuring the stability of the optical power index of the laser module 100 in the working temperature range, and will not cause some components of the coupling system to be displaced with the temperature change due to excessive use of connecting glue, affecting the coupling efficiency.

[0043] In some embodiments, the above-mentioned connecting glue can be a UV-curing glue; the above-mentioned connecting tube 3 can be a glass tube, or a connecting tube made of any light-transmitting material. Only a light-transmitting connecting tube can allow ultraviolet light to pass through the connecting tube to cure the UV-curing glue in the small gap used to bond the connecting tube 3 and the core 51, thereby stabilizing the coupling of the small light spot converged by the coupling lens 2 and the optical fiber 53, ensuring a higher coupling efficiency.

[0044] In some embodiments, ultraviolet light is called Ultra-Violet ray in English, abbreviated as UV, so ultraviolet light curing glue is also called UV curing glue. The radiation device used for curing UV glue is generally called a light curing machine, which can be divided into crawler type, box type, and point light source series. The performance characteristics of UV glue are: 1. Fast curing, controllable reaction, no solvent, no pollution; 2. Suitable for automated operation; wide range of bonding materials, high bonding strength, structural bonding, and wide application; 3. Excellent optical properties; the glue is colorless and transparent, and the transmittance after curing is >90%, so it is called shadowless glue; 4. Excellent weather resistance, no yellowing; 5. The disadvantage is that the adherend must be transparent on one side, and equipment is required for curing.

[0045] In some embodiments, the ferrule 51 may be a ceramic ferrule, or a ferrule made of any other suitable material.

[0046] Please continue reading Figure 2 and Figure 5 The pin body 52 is provided with a through hole to clamp the end of the ferrule 51 away from the tube shell 1 at one end in the through hole; the remaining part of the pin body 52 is sleeved on the optical fiber 53, and a pigtail protection cover 54 is provided on the periphery of the pin body 52.

[0047] In some embodiments, the pin body 52 may be an alloy pin body, or a pin body made of any other suitable material.

[0048] Please continue reading Figure 2 and Figure 5 The end of the optical fiber 53 close to the tube shell 1 is sleeved in the ferrule 51 and fixed by the ferrule 51. The outer sleeve of the optical fiber 53 is provided with a pin body 52 and a pigtail protection sleeve 54. The end of the optical fiber 53 away from the tube shell 1 is provided with an optical fiber connector 55; the optical fiber 53 first receives and couples the laser spot formed by the light beam passing through the coupling lens 2 and passing through the connecting tube 3, and further transmits it to the optical fiber connector 55.

[0049] Please continue reading Figure 5 The pigtail protective cover 54 is sleeved on the outer periphery of the optical fiber 53 , and the pigtail protective cover 54 covers the ferrule body 52 . The pigtail protective cover 54 is used to protect the optical fiber 53 and the ferrule body 52 .

[0050] In some embodiments, the pigtail protective cover 54 may be made of any suitable material such as rubber.

[0051] Please continue reading Figure 5 , the optical fiber connector 55 is connected to the optical fiber 53 to connect the optical fiber 53 to the optical cable in the lighting system.

[0052] like Figure 6 and Figure 7 As shown, Figure 6 is a three-dimensional exploded view of a laser module according to another embodiment of the present application; Figure 7 yes Figure 6 Partial cross-sectional view of the laser module in the illustrated embodiment. In another embodiment, the laser module 100 includes a sleeve 6 in addition to the tube shell 1, the coupling lens 2, the connecting tube 3, the laser 4 and the pigtail assembly 5. The tube shell 1 is used to install the coupling lens 2, the connecting tube 3 and the laser 4. The coupling lens 2 is used to couple the laser emitted by the laser 4 into the pigtail assembly 5. The connecting tube 3 is used to connect the tube shell 1 and the pigtail assembly 5. The laser 4, as a light source, emits a laser. The pigtail assembly 5 is used to receive the laser that passes through the coupling lens 2. The laser emitted by the laser 4 is first transmitted in the tube shell 1, then passes through the coupling lens 2, then transmitted in the connecting tube 3, and finally received by the pigtail assembly 5. The sleeve 6 is sleeved on the tube shell 1, and the connecting tube 3 and part of the pigtail assembly 5 are located in the sleeve 6. The sleeve 6 is used to protect the connecting tube 3 and the part where the connecting tube 3 is connected to the pigtail assembly 5.

[0053] In some embodiments, the sleeve 6 is configured to be a through tube, and the end of the sleeve 6 close to the laser 4 is sleeved on the tube shell 1, and parts of the third step section hole 14 and the fourth step section hole 15 in the tube shell 1 are located in the through hole of the sleeve 6, and the connecting tube 3, the core 51, the pin body 52 and part of the pigtail protective cover 54 are also arranged in the through hole of the sleeve 6; the material of the sleeve 6 can be any suitable material such as metal.

[0054] See also Figure 6 , Figure 7 and Figure 8 , Figure 8 yes Figure 6 The assembly diagram of the laser module of the provided embodiment shows that after the tube shell 1 sequentially installs the laser 4, coupling lens 2 and connecting tube 3, the laser emitted by the laser passes through the coupling lens 2, is transmitted in the connecting tube 3, and is finally received and coupled by the optical fiber 53 in the pigtail assembly 5, and is further transmitted to the optical fiber connector 55, which is connected to the optical fiber 53 to connect the optical fiber 53 with the optical cable in the lighting system; the pigtail protective sleeve 54 is sleeved on the outer periphery of the optical fiber 53, and the pin body 52 is located in the pigtail protective sleeve 54; the sleeve 6 is sleeved on the tube shell 1, and the connecting tube 3 and part of the pigtail assembly 5 are located in the sleeve 6, that is, one end of the connecting tube 3 pigtail protective sleeve 54 wrapping the pin body 52 is located in the sleeve. The sleeve 6 is used to protect the connecting tube 3 and the part where the connecting tube 3 is connected to the pigtail assembly 5.

[0055] like Fig. 9 As shown, Fig. 9 1 is a schematic diagram of the structure of an embodiment of the fiber optic lighting system provided by the present application. The present application also provides a fiber optic lighting system 200, which includes a power supply, a controller, a heat sink, and a laser module 100 in any of the above embodiments. The power supply, the controller, the heat sink, and the laser module 100 are connected to form a workable fiber optic lighting system 200 through a connecting line. Among them, the power supply is used to provide electrical energy to the fiber optic lighting system 200, the controller is used to control the switch of the fiber optic lighting system 200, and the heat sink is used to dissipate heat for the laser module 100 and the fiber optic lighting system 200.

[0056] In some embodiments, the fiber optic lighting system 200 may include one or more laser modules 100. Since the fiber optic lighting system includes the above-mentioned laser module 100, that is, the fiber optic lighting system 200 has high coupling efficiency, large optical power and good heat dissipation effect, the fiber optic lighting system 200 has good stability and long service life.

[0057] The present application installs the optical components such as coupling lens 2, connecting tube 3 and laser 4 on the tube shell 1 through the stepped structure design of the tube shell 1, ensuring the installation accuracy of each optical component and the final coupling efficiency. The setting of the connecting tube 3 plays a role of coarse positioning for coupling, which can improve the working efficiency during coupling. The connecting tube 3 is sleeved on the ferrule 51 in the pigtail assembly 5, wherein a gap is provided between the connecting tube 3 and the ferrule 51, and the gap can accommodate the connecting glue to connect the connecting tube 3 and the ferrule 51. At the same time, the existence of the gap can be used to adjust the relative position of the ferrule 51 and the connecting tube 3 by adjusting the gap to improve the coupling efficiency. The end of the laser 4 facing away from the coupling lens 2 protrudes from the tube shell 1. When the laser module 100 is installed in the optical fiber lighting system 200 through the flange, it can ensure that the laser 4 is closely connected to the radiator, and fully contact is given priority to ensure that the heat dissipation path is the shortest and the heat dissipation thermal resistance is the smallest, which is beneficial to the heat dissipation of the entire laser module 100, thereby ensuring its stability and service life.

[0058] The present application also provides a fiber optic lighting system 200 , which includes the above-mentioned laser module 100 , so the lighting system 200 has good stability and a long service life.

[0059] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent results or equivalent process changes made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A laser module, characterized in that: It includes a tube shell, a coupling lens, a connecting tube and a pigtail assembly; The coupling lens is mounted on the tube shell, the tube shell is used to mount the laser, the coupling lens is used to couple the laser emitted by the laser into the pigtail assembly, the end of the connecting tube close to the coupling lens is sleeved on the tube shell, and the end of the connecting tube away from the coupling lens is sleeved on the pigtail assembly.

2. The laser module according to claim 1, characterized in that: A stepped hole is arranged in the tube shell, and the stepped hole sequentially forms a plurality of stepped section holes, and the plurality of stepped section holes sequentially install the laser and the coupling lens, wherein the plurality of stepped section holes include stepped section holes respectively located at both ends of the stepped hole, the stepped section hole at one end of the stepped hole is used to install the laser, and the stepped section hole at the other end of the stepped hole is connected to the connecting pipe.

3. The laser module according to claim 1, characterized in that: The tube shell is provided with a flange at one end where the laser is mounted.

4. The laser module according to claim 3, characterized in that: The laser module also includes the laser, and one end of the laser facing away from the coupling lens protrudes out of the tube shell.

5. The laser module according to claim 1, characterized in that: A gap is provided between the connecting tube and the pigtail assembly, and a connecting glue is contained in the gap to connect the connecting tube and the pigtail assembly.

6. The laser module according to claim 1, characterized in that: The pigtail assembly comprises a ferrule, a ferrule body and an optical fiber. The ferrule sleeve is arranged on the optical fiber, the connecting tube sleeve is arranged on one end of the ferrule close to the tube shell, and the optical fiber receives and transmits the laser transmitted by the coupling lens; The pin body is provided with a through hole, so that one end of the pin in the through hole is clamped to an end of the pin away from the tube shell.

7. The laser module according to claim 6, characterized in that: The pigtail assembly also includes an optical fiber connector and a pigtail protective cover; The optical fiber connector is connected to the optical fiber; The pigtail protective sleeve is sleeved on the outer periphery of the optical fiber, and the pin body is located inside the pigtail protective sleeve.

8. The laser module according to claim 7, characterized in that: The laser module also includes a sleeve, which is sleeved on the tube shell, and the connecting tube and part of the pigtail assembly are located in the sleeve.

9. The laser module according to claim 8, characterized in that: The pin body is located in the sleeve; and one end of the pigtail protective sleeve wrapping the pin body is located in the sleeve.

10. A fiber optic lighting system, characterized in that: Comprising the laser module according to any one of claims 1 to 9.

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