Laser collimator and laser system

Abstract

The utility model provides a laser collimator and a laser system, and the laser collimator comprises a collimation part which is of a through hole structure, and the front end and the rear end of the collimation part are respectively provided with a first installation position and a second installation position; the lens assembly is mounted at the first mounting position, the light source assembly is mounted at the second mounting position, and the first mounting position, the second mounting position, the lens assembly and the light source assembly are coaxially arranged; and the shell assembly is of a cavity structure and wraps the light source assembly and the lens assembly, the end face of the front end of the shell assembly is provided with a hole opening structure, and the hole opening structure and the lens assembly are coaxially arranged. The laser collimator is compact in structure, adopts the concentric shaft design, shortens the distance between the light source assembly and the lens assembly, ensures the collimation of the output light beam of the laser collimator, is small in overall size, and effectively reduces the total heat production of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a laser collimator and a laser system. Background Art

[0002] Laser collimator is a device used to generate parallel laser beams. It is widely used in industries, scientific research, and medical fields. Its characteristics are high measurement accuracy, simple operation, and the ability to achieve long-distance transmission of collimated lines, which greatly improves the efficiency and accuracy of engineering construction and equipment installation. However, with the advancement of technology, the requirements for the collimation of the laser beam of the laser collimator are becoming higher and higher. At the same time, while meeting the collimation of the laser beam, the structure inside the laser is becoming more and more complex. Therefore, the size of the laser collimator itself, heat dissipation performance, etc. also need to be further improved.

[0003] In the related art, although the design of laser collimators has been continuously improved, there are still many drawbacks: First, the lens assembly and laser assembly of the laser collimator are usually spliced, and its structure is not compact enough, resulting in low concentricity between the optical fiber and the lens, which in turn reduces the collimation of the output beam of the laser collimator; Second, the distance between the laser diode and the lens is far, resulting in a larger divergence angle of the light beam; Third, the precision optical components are very sensitive to vibration, and there are no corresponding anti-vibration measures, which causes the light beam to deviate from the predetermined path and affect the collimation effect; Fourth, the heat dissipation design of the laser collimator is insufficient, resulting in an increase in the internal temperature of the laser collimator, affecting the stability and collimation of the laser beam; Fifth, after long-term use, the optical components will short-circuit due to aging, causing failure of the entire laser collimator. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a laser collimator and a laser system to solve at least one of the above-mentioned technical problems.

[0005] The utility model provides a laser collimator, which comprises: a collimator, which is a through-hole structure, wherein the front end and the rear end of the collimator are respectively provided with a first mounting position and a second mounting position; Installation position mirror assembly, and a light source assembly installed at the second installation position, the first installation position , the second mounting position, the lens assembly and the light source assembly are arranged coaxially; the outer shell assembly is in a cavity structure, wrapped around the outside of the light source assembly and the lens assembly, and the front end face of the outer shell assembly is provided with an opening structure, and the opening structure is arranged coaxially with the lens assembly.

[0006] In one embodiment of the present invention, the light source assembly includes a laser diode and a driving board, the laser diode and the rear end of the collimating portion are mounted on the front end of the driving board, and the laser diode is embedded in the second mounting position.

[0007] In an embodiment of the present invention, the light source assembly further includes a clamping nut, and the laser diode and the second mounting position are fixed by the clamping nut.

[0008] In one embodiment of the utility model, the lens assembly includes a fixing ring, a lens sleeve and a lens, the lens sleeve is a through-hole structure, the rear end portion of the lens sleeve is embedded in the first mounting position, the lens is embedded in the front end of the lens sleeve, the fixing ring is embedded in the rear end of the lens sleeve, and the fixing ring, the lens sleeve and the lens are arranged concentrically.

[0009] In an embodiment of the present invention, the laser collimator further includes an aperture, and the aperture is embedded between the lens sleeve and the first mounting position and is coaxially arranged with the first mounting position.

[0010] In one embodiment of the present invention, a limiting structure is provided at the front end of the lens sleeve, the fixing ring and the limiting structure form a limiting groove, and the lens is embedded in the limiting groove.

[0011] In one embodiment of the utility model, the shell assembly includes an inner lining, an insulating sleeve and an outer sleeve, the insulating sleeve is arranged between the inner lining and the outer sleeve, a thread is arranged on the left end of the outer sleeve, and the opening structure is composed of a first opening arranged on the front end face of the inner lining, a second opening arranged on the front end face of the insulating sleeve and a third opening arranged on the front end of the outer sleeve, and the first opening, the second opening and the third opening are arranged coaxially.

[0012] In an embodiment of the present invention, the collimating portion is in close contact with the inner lining, and the driving plate and the inner lining are glued together.

[0013] In an embodiment of the present invention, the inner lining and the outer casing are made of aluminum alloy.

[0014] The utility model provides a laser system, which comprises the laser collimator as mentioned above.

[0015] Beneficial effects of the utility model:

[0016] The laser collimator includes a collimating part, a lens assembly, a light source assembly and a shell assembly, wherein the collimating part is a through-hole structure, and a first mounting position and a second mounting position are respectively arranged at the front end and the rear end, so that the lens assembly is installed at the first mounting position, and the light source assembly is installed at the second mounting position, and the first mounting position, the second mounting position, the lens assembly and the light source assembly are arranged coaxially. In this way, the lens assembly and the light source assembly are compactly structured based on the collimating part, which reduces the volume of the entire laser collimator and shortens the distance between the light source assembly and the lens assembly, thereby reducing the total heat generation of the device and reducing the divergence angle of the light beam, so that the laser collimator has better collimation performance, and the shell assembly also has a cavity structure and is wrapped around the outside of the light source assembly and the lens assembly. The front end face of the shell assembly is provided with an open hole structure, and the open hole structure is arranged coaxially with the lens assembly. The light source assembly and the lens assembly are further fastened by the shell assembly, thereby avoiding the problem of the light beam deviating from the predetermined path due to vibration factors, thereby improving the collimation effect.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of a laser collimator shown in an exemplary embodiment of the utility model;

[0020] Among them, 1-collimation part; 2-lens assembly; 21-fixing ring; 22-lens sleeve; 23-lens; 3-light source assembly; 31-driving plate; 32-laser diode; 33-pressing nut; 4-housing assembly; 41-lining; 42-insulating sleeve; 43-outer sleeve; 44-opening structure; 5-aperture. DETAILED DESCRIPTION

[0021] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0023] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0024] Laser technology: a technology that produces highly monochromatic, coherent and directional light. The laser is the core component of the laser collimator and is responsible for generating the laser beam.

[0025] Optical collimation: refers to the process of making the light in the beam as parallel as possible. In a laser collimator, the direction of the laser beam is adjusted and corrected by using optical elements such as lenses or mirrors to achieve a highly collimated effect.

[0026] Optical components: Commonly used optical components in laser collimators include collimating lenses, reflectors, etc. The quality and accuracy of these components are crucial to the performance of the collimator.

[0027] Thermal effect: The laser collimator generates heat when working, which will affect the temperature of the optical components and further affect the wavelength and collimation of the laser. Therefore, the design of the laser collimator needs to consider heat dissipation and temperature control measures.

[0028] With the advancement of technology, although the design of laser collimators has been continuously improved, the inventors of this application have found that there are still many disadvantages: First, the lens assembly and laser assembly of the laser collimator are usually spliced, and its structure is not compact enough, resulting in low concentricity between the optical fiber and the lens, which in turn reduces the collimation of the output light beam of the laser collimator; second, the distance between the laser diode and the lens is far, resulting in a larger divergence angle of the light beam; third, the precision optical components are very sensitive to vibration, and there are no corresponding anti-vibration measures, which causes the light beam to deviate from the predetermined path and affect the collimation effect; fourth, the heat dissipation design of the laser collimator is insufficient, resulting in an increase in the internal temperature of the laser collimator, affecting the stability and collimation of the laser beam; fifth, after long-term use, the optical components will short-circuit due to aging, causing failure problems of the entire laser collimator.

[0029] Therefore, the utility model proposes a laser collimator and a laser system, please refer to Figure 1 , Figure 1 FIG. 1 is a schematic diagram of a laser collimator shown in an exemplary embodiment of the present utility model. Figure 1 As shown, the laser collimator at least comprises a collimating part 1, a lens assembly 2, a light source assembly 3 and a housing assembly 4, which are described in detail as follows:

[0030] The collimating part 1 is a through-hole structure, and a first mounting position and a second mounting position are respectively provided at the front and rear ends of the collimating part 1; a lens assembly 2 is installed at the first mounting position, and a light source assembly 3 is installed at the second mounting position, and the first mounting position, the second mounting position, the lens assembly 2 and the light source assembly 3 are coaxially arranged; the outer shell assembly 4 is a cavity structure, wrapped around the outside of the light source assembly 3 and the lens assembly 2, and an opening structure 44 is provided on the front end face of the outer shell assembly 4, and the opening structure 44 is coaxially arranged with the lens assembly 2.

[0031] The first mounting position and the second mounting position on the collimating portion 1 are strictly set according to the size and shape of the lens assembly 2 and the light source assembly 3 respectively.

[0032] It should be noted that in the embodiments of the present application, Figure 1 The direction to the left is called the front end or left end. Figure 1 The direction to the right is called the rear end or right end.

[0033] In this embodiment, the lens assembly 2 and the light source assembly 3 are compactly structured based on the collimating portion 1, which reduces the volume of the entire laser collimator and shortens the distance between the light source assembly 3 and the lens assembly 2, thereby reducing the total heat generation of the device and reducing the divergence angle of the light beam, so that the laser collimator has better collimation performance. In addition, the light source assembly 3 and the lens assembly 2 are further fastened by the outer shell assembly 4, avoiding the problem of the light beam deviating from the predetermined path due to vibration factors, thereby improving the collimation effect.

[0034] In one embodiment, the light source assembly 3 includes a laser diode 32 and a driving board 31 . The laser diode 32 and the rear end of the collimating portion 1 are mounted on the front end of the driving board 31 , and the laser diode 32 is embedded in the second mounting position.

[0035] In this embodiment, the laser diode 32 is embedded in the second mounting position, so that the laser diode 32 is fastened and the distance between the laser diode 32 and the light source assembly 3 is shortened, so that the divergence angle of the laser is reduced, and the laser convergence is better. In addition, the driving board 31 and the laser diode 32 are fixedly installed by wires.

[0036] In one embodiment, the light source assembly 3 further includes a clamping nut 33 , and the laser diode 32 and the second mounting position are fixed by the clamping nut 32 .

[0037] In this embodiment, the laser diode 32 is further tightened by the compression nut 32, which effectively avoids the problem that the light beam of the laser diode 32 deviates from the predetermined path due to external vibration.

[0038] In one embodiment, the lens assembly 2 includes a fixing ring 21, a lens sleeve 22 and a lens 23. The lens sleeve 22 is a through-hole structure. The rear end portion of the lens sleeve 22 is embedded in the first mounting position. The lens 23 is embedded in the front end of the lens sleeve 22. The fixing ring 21 is embedded in the rear end of the lens sleeve 22. The fixing ring 21, the lens sleeve 22 and the lens 23 are arranged concentrically.

[0039] In this embodiment, the light source assembly 2 is tightly fixed to the collimating part 1 through the lens sleeve 22. The light source assembly 2 is embedded in the first installation position, so that the light source assembly 2 is fastened, and the distance between the laser diode 32 and the lens 23 is shortened, so that the divergence angle of the laser is reduced, so that the laser convergence is better. In addition, the lens 23 is embedded in the front end of the lens sleeve 22, and the fixing ring 21 is embedded in the rear end of the lens sleeve 22. Through the cooperation of the fixing ring 21 and the lens sleeve 22, the lens 23 is fastened to prevent the lens 23 from sliding, vibrating, and deflecting. The setting of the concentric axis of the fixing ring 21, the lens sleeve 22 and the lens 23 also improves the parallelism of the laser output by the laser collimator.

[0040] In one embodiment, a limiting structure is provided at the front end of the lens sleeve 22, the fixing ring 21 and the limiting structure form a limiting groove, and the lens 23 is embedded in the limiting groove.

[0041] In this embodiment, since the lens sleeve 22 is a through-hole structure, the design of the limiting structure at the front end of the lens sleeve 22 can effectively prevent the lens 23 from moving toward the front end of the lens sleeve 22, thereby preventing the lens 23 from sliding or deflecting. It should be noted that the embodiment of the present application does not impose any specific restrictions on the design of the limiting structure, and it only needs to have the effect of preventing the lens 23 from sliding or deflecting. Figure 1 The clamping plate designed with the front end of the middle lens sleeve 22 facing the inner side of the lens sleeve 22 is only an example.

[0042] In a possible embodiment, a plurality of locking points of the fixing ring 21 are provided inside the lens sleeve 22. The lens 23 is installed in the lens sleeve 22, and the fixing ring 21 is locked at a suitable locking point. The fixing ring 21 and the lens sleeve 22 lock the lens 23 from the front and rear ends of the lens 23.

[0043] In one embodiment, the laser collimator further includes an aperture 5 , which is embedded between the lens sleeve 22 and the first mounting position and is coaxially arranged with the first mounting position.

[0044] In this embodiment, the aperture 5 is used to limit the stray light emitted by the laser diode 32 from passing through the optical path and to make the main light generated by the laser diode 32 have better convergence. The aperture 5 is embedded in the lens sleeve 22, which not only makes the main light have better convergence, but also ensures the compact structure of the laser collimator.

[0045] In one embodiment, the shell assembly 4 includes an inner lining 41, an insulating sleeve 42 and an outer sleeve 43. The insulating sleeve 42 is arranged between the inner lining 41 and the outer sleeve 43. The left end of the outer sleeve 43 is provided with a thread. The opening structure 44 is composed of a first opening arranged on the front end face of the inner lining 41, a second opening arranged on the front end face of the insulating sleeve 42 and a third opening arranged on the front end of the outer sleeve 43. The first opening, the second opening and the third opening are arranged concentrically.

[0046] In this embodiment, considering the installation method of the laser collimator, a thread for installation is provided at the left end of the outer sleeve 43, which can facilitate the installation and fixation of the laser collimator in various scenarios. In addition, the lining 41 is equivalent to a bracket for placing the driving board 31, and the collimation part 1 is also placed, so that the entire light source assembly 3 and the lens assembly 2 are also fastened in the lining 41. Since the driving board 31 and the laser diode 32 are fixed by wires, in certain vibration environments, or some metal debris (solder debris) brought about during the installation process, the wires are loose, if the driving board 31 power supply is accidentally touched, or the device is aged, a short circuit fault may occur. The design of the insulating sleeve 42 is used to protect the cable line, prevent the charged devices of the light source assembly 3 from short circuiting, and ensure the safe and stable operation of the line.

[0047] In one embodiment, the collimating portion 1 is in close contact with the inner lining 41 , and the driving plate 31 and the inner lining 41 are glued together.

[0048] In this embodiment, all gaps between the lining 41 and the driving plate 31 need to be filled with insulating glue. On the one hand, it can further prevent short-circuit failures of the driving plate 31, and on the other hand, it can further tighten the driving plate 31, ensuring that the laser collimator can still emit stable and parallel lasers under harsh working conditions such as high-frequency vibration, thereby further improving its concentricity. In addition, the clamping nut 33, the laser diode 32, the aperture 5, the fixing ring 21, the lens sleeve 22 and the lens 23 are fastened as a whole through the collimating part 1. During installation, these devices need to be fixed and sealed, and then the outer periphery of the whole is tightly fitted to the lining 41, so the injected glue will only exist in the driving plate 31 part, which is used to fix the driving plate 31, and will not cover the laser diode 32 or the lens 23, nor will it flow into other gaps in the lens assembly 2 or the light source assembly 3.

[0049] Preferably, the glue is a two-component AB glue, which has a fast solidification speed, high strength after curing, and good heat dissipation. Of course, the embodiment of the present application does not limit the type of glue.

[0050] In a possible embodiment, a shell cover is provided on the left end surface of the outer sleeve 43 , and the shell cover is opened so that glue between the driving plate 31 and the lining 41 can be injected there.

[0051] In one embodiment, the material of the liner 41 and the outer shell 43 is aluminum alloy.

[0052] In this embodiment, the materials of the lining 41 and the outer sleeve 43 are both aluminum alloy, such as 2A12 aluminum alloy, so that the entire shell assembly 4 has good strength, light weight and good heat dissipation.

[0053] The laser collimator has a compact structure, a small volume, good collimation performance, a simple structure, and low assembly difficulty, and can significantly reduce the production and maintenance costs of this type of laser collimator.

[0054] The above-mentioned laser collimator includes a collimating part, a lens assembly, a light source assembly and a shell assembly, wherein the collimating part is a through-hole structure, and a first mounting position and a second mounting position are respectively provided at the front end and the rear end, so that the lens assembly is installed at the first mounting position, and the light source assembly is installed at the second mounting position, and the first mounting position, the second mounting position, the lens assembly and the light source assembly are arranged coaxially. In this way, the lens assembly and the light source assembly are compactly structured based on the collimating part, which reduces the volume of the entire laser collimator and shortens the distance between the light source assembly and the lens assembly, thereby reducing the total heat generation of the device and reducing the divergence angle of the light beam, so that the laser collimator has better collimation performance, and the shell assembly also has a cavity structure and is wrapped around the outside of the light source assembly and the lens assembly. The front end face of the shell assembly is provided with an opening structure, and the opening structure is arranged coaxially with the lens assembly. The light source assembly and the lens assembly are further fastened by the shell assembly, thereby avoiding the problem of the light beam deviating from the predetermined path due to vibration factors, thereby improving the collimation effect.

[0055] The utility model also provides a laser system, comprising the laser collimator as mentioned above.

[0056] It should be noted that the laser system provided in the above embodiment and the laser collimator provided in the above embodiment belong to the same concept, and the laser collimator in the system has been described in detail in the above embodiment, which will not be repeated here.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A laser collimator, characterized in that: The laser collimator comprises: The collimating part is in a through-hole structure, and the front end and the rear end of the collimating part are respectively provided with a first mounting position and a second mounting position; A lens assembly installed at the first installation position, and a light source assembly installed at the second installation position, wherein the first installation position, the second installation position, the lens assembly and the light source assembly are arranged coaxially; The shell component is in a cavity structure and is wrapped around the light source component and the lens component. The front end surface of the shell component is provided with an opening structure, and the opening structure is arranged coaxially with the lens component.

2. The laser collimator according to claim 1, characterized in that: The light source assembly comprises a laser diode and a driving board. The laser diode and the rear end of the collimating portion are mounted on the front end of the driving board, and the laser diode is embedded in the second mounting position.

3. The laser collimator according to claim 2, characterized in that: The light source assembly further comprises a clamping nut, and the laser diode and the second mounting position are fixed by the clamping nut.

4. The laser collimator according to claim 1, characterized in that: The lens assembly includes a fixing ring, a lens sleeve and a lens. The lens sleeve is a through-hole structure. The rear end portion of the lens sleeve is embedded in the first mounting position. The lens is embedded in the front end of the lens sleeve. The fixing ring is embedded in the rear end of the lens sleeve. The fixing ring, the lens sleeve and the lens are arranged concentrically.

5. The laser collimator according to claim 4, characterized in that: The laser collimator further comprises an aperture, which is embedded between the lens sleeve and the first mounting position and is arranged coaxially with the first mounting position.

6. The laser collimator according to any one of claims 4 or 5, characterized in that: A limiting structure is provided at the front end of the lens sleeve, the fixing ring and the limiting structure form a limiting groove, and the lens is embedded in the limiting groove.

7. The laser collimator according to claim 2, characterized in that: The shell component includes an inner lining, an insulating sleeve and an outer sleeve, the insulating sleeve is arranged between the inner lining and the outer sleeve, and a thread is arranged on the left end of the outer sleeve. The opening structure consists of a first opening arranged on the front end face of the inner lining, a second opening arranged on the front end face of the insulating sleeve and a third opening arranged on the front end of the outer sleeve, and the first opening, the second opening and the third opening are arranged coaxially.

8. The laser collimator according to claim 7, characterized in that: The collimating portion is in close contact with the inner liner, and the driving plate and the inner liner are glued together.

9. The laser collimator according to any one of claims 7 or 8, characterized in that: The material of the lining and the outer sleeve is aluminum alloy.

10. A laser system, characterized in that: The system comprises the laser collimator according to any one of claims 1-9.

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