Laser

Abstract

The embodiment of the utility model provides a laser, and relates to the technical field of laser packaging. The laser includes: a base plate; the light-emitting assembly is located on one side of the bottom plate and used for emitting laser; the steering component is located on one side of the bottom plate, located on the light-emitting side of the light-emitting assembly and used for deflecting the laser emitted by the light-emitting assembly to the light-emitting surface side of the laser; wherein the bottom plate comprises a first positioning part, the first positioning part is located on the side, facing the steering component, of the bottom plate, the steering component comprises a second positioning part, the second positioning part is located on the side, facing the bottom plate, of the steering component, and the first positioning part and the second positioning part are matched and embedded. Therefore, the first positioning part on the bottom plate is embedded with the second positioning part on the steering component, so that the steering component can be accurately attached to the preset position of the bottom plate, the attaching precision of the steering component is improved, efficiency loss caused by attaching tolerance is reduced, and the light emitting quality of the laser is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of laser packaging, and more specifically, to a laser. Background Art

[0002] At present, the laser projection industry is developing very rapidly. As one of the key core components, laser plays an irreplaceable role. Semiconductor lasers are produced by packaging chips after they are manufactured. Therefore, the level of packaging capacity has a significant impact on the application, cost, performance and other indicators of the final laser.

[0003] In the related technologies, laser packaging technology can be divided into bank packaging, multi-chip (Multichip LaserDiode, MCL) packaging and ceramic packaging. Multi-chip packaging of MCL and ceramic modules has become a packaging technology that is widely used today due to its advantages such as small size, high integration and low cost. However, multi-chip packaging also has disadvantages such as many processes, high requirements for bonding process and many combination tolerances. Each step of the process will introduce mounting tolerances, which will have a significant impact on the quality of the final output beam. Utility Model Content

[0004] The exemplary embodiment of the present application provides a laser for solving the problem of how to improve the mounting accuracy of components inside the laser.

[0005] This application provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a laser, including:

[0007] Base plate;

[0008] A light emitting component, located on one side of the bottom plate, for emitting laser light;

[0009] A deflection component, located on one side of the bottom plate and on the light-emitting side of the light-emitting component, and used to deflect the laser light emitted by the light-emitting component to the light-emitting surface side of the laser;

[0010] The bottom plate includes a first positioning portion, which is located on a side of the bottom plate facing the steering component, and the steering component includes a second positioning portion, which is located on a side of the steering component facing the bottom plate, and the first positioning portion and the second positioning portion are interlocked.

[0011] It can be known from the above technical scheme that the laser provided by the present application includes: a base plate; a light-emitting component, located on one side of the base plate, for emitting laser light; a steering component, located on one side of the base plate and on the light-emitting side of the light-emitting component, for deflecting the laser light emitted by the light-emitting component to the light-emitting surface side of the laser; wherein the base plate includes a first positioning portion, the first positioning portion is located on the side of the base plate facing the steering component, the steering component includes a second positioning portion, the second positioning portion is located on the side of the steering component facing the base plate, and the first positioning portion and the second positioning portion are engaged. Thus, by engaging the first positioning portion on the base plate with the second positioning portion on the steering component, the steering component can be accurately attached to the preset position of the base plate, thereby improving the attachment accuracy of the steering component and reducing the efficiency loss caused by the mounting tolerance, which is beneficial to improving the light-emitting quality of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0013] Figure 1 It is a schematic diagram of the structure of a laser in the related art;

[0014] Figure 2 It is a schematic diagram of a top view structure of a laser in the related art;

[0015] Figure 3 for Figure 2 A schematic diagram of the side view structure of the laser shown;

[0016] Figure 4 A schematic diagram of a process of a laser packaging method in the related art;

[0017] Figure 5 It is a structural schematic diagram of a laser packaging method in the related art;

[0018] Figure 6 A schematic diagram of the structure of a laser provided in an embodiment of the present application;

[0019] Figure 7 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0020] Figure 8 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0021] Fig. 9 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0022] Fig.10 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0023] Fig.11 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0024] Fig.12 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0025] Fig.13 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0026] Fig.14 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0027] Fig.15 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0028] Fig.16 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0029] Fig.17 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0030] Fig.18 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0031] Fig.19 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0032] Fig. 20 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0033] Fig.21 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0034] Fig. 22 A schematic diagram of the structure of a steering component provided in an embodiment of the present application;

[0035] Fig.23 A schematic diagram of a top view structure of a laser provided in an embodiment of the present application;

[0036] Fig.24 A schematic diagram of the top view structure of a laser provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0038] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0039] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0040] In related technologies, such as Figure 1-3 As shown, the multi-chip packaged laser mainly includes a tube shell, a light-emitting component 2, a steering component 3, a cover plate 5, a sealing glass 6 and a collimating lens 7, wherein the tube shell includes a bottom plate 1 and an annular side wall 4, and the light-emitting component 2 includes a light-emitting chip 21 and a heat sink substrate 22.

[0041] The process of multi-chip packaging is as follows: Figure 4 As shown, the tube shell is first made, and then the light-emitting chip 21 and the heat sink substrate 22 are welded using a high-precision eutectic welding machine. The welded light-emitting chip 21 and the heat sink substrate 22 are also called Cos components. Next, the light-emitting component 2 and the steering component 3 are mounted. This process is completed using a chip mounter, and the heat sink substrate 22 and the steering component 3 are bonded relative to the base plate 1 by high-temperature sintering. Then the wire bonding is completed using a wire bonding machine, and the glass cover plate subassembly (i.e., the assembly formed by welding the glass cover plate to the metal frame) is welded using parallel sealing welding technology, wherein the sealing glass 6 is fixed to the cover plate 5 by green glue to form a glass cover plate. Finally, the alignment process control is used to complete the alignment and debugging of the aspheric collimating lens 7, and the collimating lens 7 is fixed to the tube shell by UV glue.

[0042] like Figure 5 As shown, it is a structural schematic diagram of a laser packaging method in the related art. First, a light-emitting chip 21 is provided, and the light-emitting chip 21 is welded with a heat sink substrate 22 to form a light-emitting component 2. Then, the light-emitting component 2 and the steering component 3 are mounted on the bottom plate 1. Next, wire bonding and glass cover welding are performed to achieve the sealing of the tube shell. Finally, the collimation lens 7 is aligned, debugged and mounted.

[0043] Multi-chip packaging also has disadvantages such as multiple processes, high bonding process requirements, and multiple combination tolerances. Each step of the process will introduce mounting tolerances, which will have a significant impact on the quality of the final output beam. Among them, the most critical is the mounting of the light-emitting component 2 and the steering component 3 with the base plate 1. The mounting accuracy directly affects the light-emitting quality of the laser.

[0044] At the same time, as laser display technology is applied to micro-projection, car-mounted and vehicle-mounted fields, it has strict restrictions on the volume of the optical engine. The volume of the laser package plays a key influencing factor. Therefore, the current packaging trend is to develop small-volume laser modules, and the volume of the components packaged in the module must also be reduced. The reduction of optical components means that the internal arrangement will be more compact and dense, and also increases the precision requirements for mounting tolerances.

[0045] In order to solve at least part of the above technical problems, an embodiment of the present application provides a laser, which includes: a base plate; a light-emitting component, located on one side of the base plate, for emitting laser light; a steering component, located on one side of the base plate and on the light-emitting side of the light-emitting component, for deflecting the laser light emitted by the light-emitting component to the light-emitting surface side of the laser; wherein the base plate includes a first positioning portion, the first positioning portion is located on the side of the base plate facing the steering component, the steering component includes a second positioning portion, the second positioning portion is located on the side of the steering component facing the base plate, and the first positioning portion and the second positioning portion are engaged. Thus, by matching and engaging the first positioning portion on the base plate with the second positioning portion on the steering component, the steering component can be accurately mounted at a preset position on the base plate, thereby improving the mounting accuracy of the steering component and reducing the efficiency loss caused by mounting tolerances, thereby facilitating improving the light-emitting quality of the laser.

[0046] A laser provided in an embodiment of the present application is exemplarily described below in conjunction with the accompanying drawings.

[0047] In some embodiments, Figure 6-21 As shown, the laser includes: a base plate 1, a light-emitting component 2 and a steering component 3.

[0048] The base plate 1 is made of a material with good thermal conductivity, for example, oxygen-free copper or ceramics, or metal materials such as copper, aluminum, iron, nickel and molybdenum, or ceramic materials such as aluminum nitride and silicon carbide.

[0049] Among them, the light-emitting component 2 is located on one side of the base plate 1 and is used to emit laser. The light-emitting component 2 includes a light-emitting chip 21 and a heat sink substrate 22. The light-emitting chip 21 and the heat sink substrate 22 are stacked. The heat sink substrate 22 is located on the side of the light-emitting component 2 facing the base plate 1, and the light-emitting chip 21 is located on the side of the heat sink substrate 22 away from the base plate 1. The light-emitting chip 21 is a side light-emitting mode, and the direction of the emitted laser is perpendicular to the stacking direction. The heat sink substrate 22 has a large thermal conductivity, and can quickly export the heat when the light-emitting chip 21 emits light to generate heat, thereby avoiding damage to the light-emitting chip 21 by the heat. The material of the heat sink substrate 22 may include one or more of aluminum nitride and silicon carbide.

[0050] The steering component 3 and the light emitting component 2 are located on the same side of the bottom plate 1, and the steering component 3 is located on the light emitting side of the light emitting component 2. The steering component 3 is used to deflect the laser emitted by the light emitting component 2 to the light emitting side of the laser. The steering component 3 is made of materials such as borosilicate glass, quartz and silicon, and the reflective surface of the steering component 3 is coated with an anti-reflection film to improve the reflectivity.

[0051] The bottom plate 1 includes a first positioning portion 11, which is located on the side of the bottom plate 1 facing the steering component 3. The steering component 3 includes a second positioning portion 31, which is located on the side of the steering component 3 facing the bottom plate 1, and the first positioning portion 11 and the second positioning portion 31 are engaged. The first positioning portion 11 is located at a preset position of the bottom plate 1, which is the mounting position of the steering component 3 on the bottom plate 1. The second positioning portion 31 is located at a corresponding position on the side of the steering component 3 facing the bottom plate 1. By wedging and engaging the first positioning portion 11 and the second positioning portion 31, the steering component 3 is accurately fixed at the preset position of the bottom plate 1, thereby improving the mounting accuracy of the steering component 3 and reducing the efficiency loss caused by the mounting tolerance, which is beneficial to improving the light emission quality of the laser.

[0052] The laser provided in the embodiment of the present application is provided with a first positioning portion 11 on the side of the base plate 1 facing the steering component 3, and a second positioning portion 31 which is mutually engaged with the first positioning portion 11 is provided at a corresponding position on the side of the steering component 3 facing the base plate 1. By matching and engaging the first positioning portion 11 on the base plate 1 with the second positioning portion 31 on the steering component 3, the steering component 3 can be accurately mounted at a preset position of the base plate 1, thereby improving the mounting accuracy of the steering component 3 and reducing the efficiency loss caused by the mounting tolerance, which is beneficial to improving the light emission quality of the laser.

[0053] In some embodiments, the machining accuracy of the first positioning portion 11 satisfies ±50 μm, including the position accuracy of the first positioning portion 11 on the bottom plate 1 and the size accuracy of the first positioning portion 11. This arrangement ensures that the first positioning portion 11 can be engaged with the second positioning portion 31 and that the mounting accuracy of the steering component 3 fixed on the bottom plate 1 is ensured.

[0054] In some embodiments, Figure 6-21 As shown, the first positioning portion 11 includes one of a convex structure and a concave structure, and the second positioning portion 31 includes the other of a convex structure and a concave structure.

[0055] If the first positioning portion 11 is a convex structure, the second positioning portion 31 is a concave structure. If the first positioning portion 11 is a concave structure, the second positioning portion 31 is a convex structure. The convex structure and the concave structure are interlocked with each other, so as to realize the connection between the steering component 3 and the bottom plate 1, and accurately fix the steering component 3 at the preset position of the bottom plate.

[0056] In addition, the steering component 3 is usually fixed to the base plate 1 by welding glue. By setting the pit structure, the welding glue will overflow to the pit structure and will not overflow to the reflective surface of the steering component 3.

[0057] For example, Figure 6-9 As shown in any of Figures 14-17, the first positioning portion 11 is a protruding structure, and the second positioning portion 31 is a concave structure.

[0058] For example, Figure 10-13 As shown in any of the Figures 18-21, the first positioning portion 11 is a concave structure, and the second positioning portion 31 is a convex structure.

[0059] In some embodiments, Figure 14-17 As shown in any of the figures, the first positioning portion 11 includes a protruding structure, and the protruding structure is integrated with the bottom plate.

[0060] In some embodiments, Figure 18-21 As shown in any of the figures, the second positioning portion 31 includes a protruding structure, and the protruding structure is integrated with the steering component.

[0061] In some embodiments, the shape of the protrusion structure includes at least one of a cylinder, a cone, a prism, a pyramid, and a frustum; and the shape of the concave structure is the same as the shape of the corresponding protrusion structure.

[0062] Among them, prisms include but are not limited to triangular prisms, quadrangular prisms or polygonal prisms, pyramids include but are not limited to triangular pyramids, quadrangular pyramids or polygonal pyramids, and frustums include but are not limited to triangular prisms, quadrangular pyramids or polygonal pyramids.

[0063] For example, Figure 6 , 10 As described in any of Figures 14 and 18, the cross-sectional shape of the protruding structure is a triangle, and the corresponding shape of the protruding structure is a cone or a pyramid.

[0064] For example, Figure 8 , 12As shown in any of Figures 16 and 20, the cross-sectional shape of the protruding structure is a rectangle, and the corresponding shape of the protruding structure is a cylinder or a prism.

[0065] For example, Fig. 9 , 13 As shown in any of Figures 17 and 21, the cross-sectional shape of the protruding structure is a trapezoid, and the corresponding shape of the protruding structure is a prism.

[0066] For example, Figure 7 , 11 As shown in any one of Figures 15 and 19, the cross-sectional shape of the protruding structure is U-shaped, and the corresponding shape of the protruding structure is a cylinder or a prism, and the outward end of the cylinder or prism is rounded.

[0067] In some embodiments, in order to ensure that the protruding structure can be completely embedded in the concave structure, the size of the protruding structure is set to be slightly smaller than the size of the concave structure, but the size difference between the two cannot be too large, that is, the difference between the size of the concave structure and the size of the protruding structure is less than the maximum accuracy threshold.

[0068] Exemplarily, the maximum accuracy threshold is less than or equal to 50 μm.

[0069] In some embodiments, Figure 6-9 As shown in any of Figures 14-17, the first positioning portion 11 is a protruding structure, and the second positioning portion 31 is a concave structure.

[0070] The steering component 3 is usually made of glass material. If the second positioning portion 31 on the steering component 3 is set as a convex structure, the convex structure protrudes from the surface of the steering component and is easily damaged by collision before mounting. Therefore, the second positioning portion 31 of the steering component 3 is set as a concave structure, which is sunken inside the steering component 3 and will not be damaged by collision.

[0071] In some embodiments, along the direction perpendicular to the plane of the base plate 1 (i.e., the height direction of the steering component 3), the height of the pit structure is less than or equal to half of the height of the steering component 3, i.e., H3≤1 / 2H1, wherein H1 represents the height of the steering component 3, and H3 represents the height of the pit structure.

[0072] In some embodiments, along the direction in which the light-emitting component 2 emits laser light (i.e., the length direction of the turning component 3), the length of the pit structure is less than or equal to half of the length of the turning component 3, i.e., L3≤1 / 2L1, wherein L1 represents the length of the turning component 3, and L3 represents the length of the pit structure in this direction.

[0073] By setting in this way, by limiting the height and / or length of the pit structure in the steering component 3, it is prevented that the pit structure damages the reflection surface of the steering component 3 and affects the reflection efficiency of the reflection surface.

[0074] In some embodiments, Fig. 22 As shown, along the direction perpendicular to the plane where the bottom plate 1 is located, the height H1 of the steering component is greater than or equal to 0.95 mm, and may also be less than or equal to 1.15 mm.

[0075] In some embodiments, along the direction in which the light emitting component 2 emits laser light, the length L1 of the turning component is greater than or equal to 0.77 mm, and may also be less than or equal to 0.83 mm.

[0076] In the related art, the size (length×height) of the steering component 3 is: 1.84 mm×1.0 mm. In order to achieve miniaturization of the laser, the embodiment of the present application reduces the length and height of the steering component 3 while meeting the requirements for laser reflection.

[0077] Exemplarily, if the height H1 of the steering component 3 is equal to 1.0 mm, the height H3 of the second positioning portion 31 is less than 0.5 mm; if the length L1 of the steering component 3 is equal to 0.8 mm, the length L3 of the second positioning portion 31 is less than 0.4 mm.

[0078] In some embodiments, Fig. 22 As shown, along the row direction of the light emitting components 2, the shape of the steering component 3 is a right-angled trapezoid, the length of the bottom side of the right-angled trapezoid is equal to the length L1 of the steering component 3, the length of the right-angled side of the right-angled trapezoid is equal to the height H1 of the steering component 3, the length of the top side of the right-angled trapezoid is L2, L2 is greater than or equal to 0.25mm, and L2 can also be less than or equal to 0.35mm. The hypotenuse of the right-angled trapezoid is the reflection surface of the steering component 3, the angle ∠A between the reflection surface and the bottom side is equal to 45°±10′, and the angle ∠B between the reflection surface and the top side is equal to 135°±0.5°.

[0079] In some embodiments, Fig. 22 As shown, the bottom sharp corner of the angle ∠A between the reflecting surface and the bottom edge is cut off, which solves the edge collapse problem and effectively controls the length of the steering component 3, which is conducive to miniaturization of the device.

[0080] In some embodiments, Fig. 22 As shown, the vertical distance between the lower edge of the reflecting surface of the deflection component 3 and the bottom edge is H2, H2 is greater than or equal to 0 mm, and H2 may also be less than or equal to 0.05 mm.

[0081] It should be noted that Fig. 22 The steering component 3 is only exemplarily shown as a right-angle prism, but it does not constitute a limitation on the laser provided in the embodiment of the present application. In other embodiments, the steering component 3 includes all optical devices known to those skilled in the art that have the function of deflecting the propagation direction of the laser, such as anisotropic prisms or Si prisms, which are not limited here.

[0082] In some embodiments, Fig.23 As shown in FIG. 24 , the steering component 3 corresponds to the light emitting assembly 2 one by one, that is, one light emitting assembly 2 corresponds to one steering component 3 .

[0083] In some embodiments, one turning component 3 corresponds to at least two light-emitting components 2 .

[0084] Exemplarily, the laser includes a plurality of light-emitting components 2 and a steering component 3, and the plurality of light-emitting components are arranged in a row-column matrix. By increasing the width of the steering component 3, at least two light-emitting components 2 in the same row share the same steering component 3.

[0085] In some embodiments, all light emitting components 2 in the same row share the same turning component 3 .

[0086] In some embodiments, Fig.23 Or as shown in 24, the laser also includes: an annular side wall 4, the annular side wall 4 and the light-emitting component 2 are located on the same side of the base plate 1, and surround the light-emitting component 2 and the steering component 3; wherein, the side surface of the base plate 1 facing the annular side wall 4 includes at least two positioning marks 12, the annular side wall 4 also surrounds the positioning mark 12, and the positioning mark 12 is symmetrically arranged on the opposite sides of the annular side wall 4, and the positioning mark 12 is used to guide the mounting of the light-emitting component 2.

[0087] The annular side wall 4 is made of ceramic material or Kovar alloy material. The positioning mark 12 can be formed on the surface of the bottom plate 1 facing the annular side wall 4 (or the light-emitting component 2) by etching process, and the positioning mark can also be formed on the surface of the bottom plate 1 by spraying, electroplating, pasting and other processes, which are not limited here. The positioning mark 12 is located on the bottom plate 1 surrounded by the annular side wall 4.

[0088] For example, Fig.23 As shown, the bottom plate 1 located in the annular side wall 4 includes two positioning marks 12, which are symmetrically arranged on the first side and the second side opposite to the annular side wall 4, and the first side and the second side extend along the second direction Y, and the second direction Y is parallel to the direction in which the light emitting component 2 emits the laser. A rectangular coordinate system is established with the midpoint of the line connecting the center points of the two positioning marks 12 as the origin O, and the origin O as the origin of the coordinate axis (0,0). The light emitting component 2 is mounted in combination with the mounting position of the steering component 3 and the position of the light emitting component 2 simulated theoretically, thereby improving the mounting accuracy of the light emitting component 2.

[0089] For example, Fig.24As shown, the bottom plate 1 located in the annular side wall 4 includes two positioning marks 12, and the two positioning marks are symmetrically arranged on the third side and the fourth side opposite to the annular side wall 4, and the third side and the fourth side extend along the first direction X, and the first direction X is perpendicular to the second direction Y. The midpoint of the line connecting the center points of the two positioning marks 12 is taken as the origin O, and the origin O is taken as the origin of the coordinate axis (0,0) to establish a rectangular coordinate system, and the light-emitting component 2 is mounted in combination with the mounting position of the steering component 3 and the position of the light-emitting component 2 simulated theoretically, thereby improving the mounting accuracy of the light-emitting component 2.

[0090] It should be noted that Fig.23 Or 24 only shows by way of example that the number of positioning marks 12 is two, and the two positioning marks 12 are located at the middle position of the two opposite sides of the annular side wall 4, and the corresponding origin O is located at the middle position of the area surrounded by the annular side wall 4, but it does not constitute a limitation on the laser provided in the embodiment of the present application. In other embodiments, the number of positioning marks 12 can be set according to demand, for example, three or more, and the positioning marks 12 can also be set at one end of the two opposite sides of the annular side wall, and the corresponding origin O is located at one side of the area surrounded by the annular side wall 4, which is not limited here.

[0091] In some embodiments, the shape of the positioning mark 12 includes all shapes with a center point, such as a circle, a regular polygon, a rectangle, a pentagram, and a cross. Regular polygons include regular triangles, squares, regular pentagons, and regular hexagons.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0093] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A laser, characterized in that: include: Base plate; A light emitting component, located on one side of the bottom plate, for emitting laser light; A deflection component, located on one side of the bottom plate and on the light-emitting side of the light-emitting component, and used to deflect the laser light emitted by the light-emitting component to the light-emitting surface side of the laser; The bottom plate includes a first positioning portion, which is located on a side of the bottom plate facing the steering component, and the steering component includes a second positioning portion, which is located on a side of the steering component facing the bottom plate, and the first positioning portion and the second positioning portion are interlocked.

2. The laser according to claim 1, characterized in that The first positioning portion includes one of a protruding structure and a concave structure, and the second positioning portion includes the other of a protruding structure and a concave structure.

3. The laser according to claim 2, characterized in that The shape of the protrusion structure includes at least one of a cylinder, a cone, a prism, a pyramid and a frustum; The shape of the concave structure is the same as the shape of the corresponding convex structure.

4. The laser according to claim 1, characterized in that The first positioning portion includes a protrusion structure, and the second positioning portion includes a concave structure; Along a direction perpendicular to the plane where the bottom plate is located, the height of the pit structure is less than or equal to half of the height of the steering component; and / or, Along the direction in which the light emitting component emits laser light, the length of the pit structure is less than or equal to half of the length of the turning component.

5. The laser according to claim 4, characterized in that In a direction perpendicular to the plane where the bottom plate is located, the height of the steering component is greater than or equal to 0.95 mm and / or less than or equal to 1.15 mm; Along the direction in which the light-emitting component emits laser light, the length of the steering component is greater than or equal to 0.77 mm and / or less than or equal to 0.83 mm.

6. The laser according to claim 1, characterized in that The first positioning portion includes a protruding structure, and the protruding structure is integrated with the bottom plate; or, The second positioning portion includes a protruding structure, and the protruding structure is integrated with the steering component.

7. The laser according to claim 1, characterized in that The steering components correspond one to one with the light emitting components; or, One of the turning components corresponds to at least two of the light-emitting components.

8. The laser according to any one of claims 1 to 7, characterized in that: Also includes: an annular side wall, located on the same side of the bottom plate as the light emitting component, and the annular side wall surrounds the light emitting component and the turning component; Among them, the side surface of the base plate facing the annular side wall includes at least two positioning marks, the annular side wall surrounds the positioning marks, and the positioning marks are symmetrically arranged on two opposite sides of the annular side wall, and the positioning marks are used to guide the mounting of the light-emitting component.

9. The laser according to claim 8, characterized in that The shape of the positioning mark includes at least one of a circle, an equilateral triangle, a regular polygon, a rectangle, a five-pointed star and a cross.

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