Laser

Abstract

The embodiment of the invention provides a laser, and relates to the technical field of laser packaging. According to the laser, by changing the arrangement sequence of the first-type light-emitting assemblies and the second-type light-emitting assemblies and arranging at least one second-type light-emitting chip between every two adjacent first-type light-emitting assemblies, the arrangement sequence of laser light of different colors emitted by the laser is correspondingly changed, the light emitting uniformity of the laser is improved, and the light emitting efficiency of the laser is improved. Meanwhile, the conductive part is arranged on one side, deviating from the bottom plate, of the steering part, so that the steering part can also be used as an adapter table, the light-emitting assemblies are electrically connected through the conductive part, the number of the adapter tables is reduced, the size of the laser is reduced, and the limitation of internal wiring and the size on the arrangement of the light-emitting assemblies is improved.

Description

Technical Field

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

[0002] In the development of laser display devices, ensuring uniform image quality and preventing color casts are currently key research areas. Color casts in laser TVs and projection devices are caused by the uneven distribution of the spectrum composed of different colors of light in the light source.

[0003] In related technologies, in order to achieve miniaturization and integration of equipment, multi-chip packaging technology is usually used to package lasers, and multiple light-emitting chips of different colors are packaged in a light-emitting module. Due to internal wiring limitations, light-emitting chips of the same color are usually arranged adjacent to each other. Taking blue-green light-emitting chips as an example, the arrangement order of blue and green light-emitting chips is "BBGGG". This arrangement causes the blue and green lasers to deviate to one side, which is not conducive to uniform light in the rear-end optical path. Summary of the Invention

[0004] The exemplary embodiment of the present application provides a laser for solving the problem of how to improve the uniformity of laser light output.

[0005] This application provides the following technical solutions:

[0006] The present invention provides a laser device, comprising:

[0007] A first tube shell includes a bottom plate and a side wall, wherein the side wall is located on one side of the bottom plate and forms an enclosed space with the bottom plate;

[0008] a light-emitting assembly located on the same side of the bottom plate as the sidewall and within the enclosed space, the light-emitting assembly comprising a first type of light-emitting assembly and a second type of light-emitting assembly, the first type of light-emitting assembly and the second type of light-emitting assembly being configured to respectively emit lasers of different colors, the first type of light-emitting assembly and the second type of light-emitting assembly being arranged along a first direction, with at least one second type of light-emitting assembly being disposed between two adjacent first type of light-emitting assemblies;

[0009] a deflection component, located 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;

[0010] Wherein, a conductive portion is provided on a side of the steering component facing away from the bottom plate, and the conductive portion is used to achieve electrical connection of the light-emitting component.

[0011] It can be seen from the above technical solution that the laser provided by the present application, by changing the arrangement order of the first type of light-emitting components and the second type of light-emitting components, at least one second type of light-emitting component is arranged between two adjacent first type light-emitting components, which correspondingly changes the arrangement order of different color lasers emitted by the laser, thereby improving the uniformity of the laser light output. At the same time, a conductive part is provided on the side of the steering component away from the base plate, so that the steering component can also be used as a transfer station. The light-emitting components are electrically connected through the conductive part, which reduces the number of transfer stations, is conducive to reducing the volume of the laser, and improves the restrictions of the internal wiring and volume of the laser on the arrangement of the light-emitting components. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 This is an exploded diagram of the structure of a laser in the related art;

[0014] Figure 2 Schematic diagram of the structure of a laser in related technology;

[0015] Figure 3 Schematic diagram of the structure of another laser in the related art;

[0016] Figure 4 Schematic diagram of the structure of an oblique prism in the related art;

[0017] Figure 5 Schematic diagram of the optical path of laser passing through rhombic prism in 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] Figure 9 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0022] Figure 10 A schematic top view of a steering component provided in an embodiment of the present application;

[0023] Figure 11for Figure 10 A side structural view of the steering component shown;

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

[0025] Figure 13 A schematic top view of another steering component provided in an embodiment of the present application;

[0026] Figure 14 for Figure 13 A side structural diagram of the steering component shown;

[0027] Figure 15 for Figure 13 Another side structural view of the steering component shown;

[0028] Figure 16 A schematic side view of the first step provided in an embodiment of the present application;

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

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

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

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

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

[0034] Figure 22 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0035] Figure 23 A schematic diagram of the structure of another laser provided in an embodiment of the present application;

[0036] Figure 24 This is a schematic diagram of the structure of another laser provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

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

[0039] The terms "comprise," "include," and "have," 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] like Figure 1-2 As shown, the multi-chip packaged laser mainly includes a tube shell, a light-emitting component 2, a steering component 3, a cover plate 4, a sealing glass 5 and a collimating lens 6, wherein the tube shell includes a bottom plate 112 and a side wall 111, the light-emitting component 2 includes a light-emitting chip 21 and a heat sink substrate 22, the light-emitting component 2 and the steering component 3 are mounted on the mounting area of ​​the bottom plate 112, the steering component 3 is located on the light-emitting side of the light-emitting chip 21, the sealing glass 5 is fixed to the cover plate 4 by green glue to form a glass cover plate, the glass cover plate is located on the side of the side wall 111 away from the bottom plate 112, and the collimating lens 6 is located on the side of the glass cover plate away from the side wall 111.

[0041] In related technologies, one of the methods to solve the color cast of image quality is to evenly distribute the RGB light emitted by the laser, which is beneficial to the uniform light in the rear optical path. Figure 3 As shown, the laser encapsulates the red light-emitting components (serial number 1 to 4) in a tube shell (i.e., the second tube shell 12), and the blue-green light-emitting components (serial number 5 to 9) in a tube shell (i.e., the first tube shell 11). Due to internal wiring limitations, the blue-green light-emitting components are arranged in the order of "BBGGG". This arrangement causes the blue light and green light to be biased to one side, which is not conducive to uniform light in the rear-end optical path.

[0042] For the arrangement of blue-green light emitting components, a rhombus prism is added to the external optical path of the laser in the related art, such as Figure 4-5 As shown, the rhombus prism has two parallel reflective surfaces. Using these two reflective surfaces, the blue laser light emitted by one of the two blue light-emitting components is deflected to the right of the green light-emitting component group. The emitted laser light is arranged in a "BGGGB" sequence, resulting in a uniform distribution of the emitted light. However, placing the rhombus prism outside the laser package structure requires that its size be determined based on the laser spot size. Different sizes require different light source housings, resulting in poor compatibility.

[0043] In order to solve at least some of the above-mentioned technical problems, an embodiment of the present application provides a laser, which includes: a first tube shell, including a base plate and a side wall, the side wall is located on one side of the base plate and forms an enclosed space with the base plate; a light-emitting component, which is located on the same side of the base plate as the side wall and is located in the enclosed space, the light-emitting component includes a first type of light-emitting component and a second type of light-emitting component, the first type of light-emitting component and the second type of light-emitting component are used to emit lasers of different colors respectively, the first type of light-emitting component and the second type of light-emitting component are arranged along a first direction, and at least one second type of light-emitting component is arranged between two adjacent first type light-emitting components; a steering component, which is located on the light-emitting side of the light-emitting component, and is used to deflect the laser emitted by the light-emitting component to the light-emitting surface side of the laser; wherein a conductive portion is provided on the side of the steering component facing away from the base plate, and the conductive portion is used to achieve electrical connection of the light-emitting component. Therefore, by changing the arrangement order of the first type of light-emitting components and the second type of light-emitting components, at least one second type of light-emitting component is set between two adjacent first type light-emitting components, which correspondingly changes the arrangement order of different color lasers emitted by the laser, thereby improving the uniformity of the laser light output. At the same time, a conductive part is set on the side of the steering component away from the base plate, so that the steering component can also be used as a transfer station. The light-emitting components are electrically connected through the conductive part, which reduces the number of transfer stations, is conducive to reducing the volume of the laser, and improves the restrictions of the internal wiring and volume of the laser on the arrangement of the light-emitting components.

[0044] The following is an illustrative description of a laser provided in an embodiment of the present application with reference to the accompanying drawings.

[0045] In some embodiments, as Figure 6 As shown, the laser includes a first tube shell 11 , a light-emitting component 2 and a steering component 3 .

[0046] The first tube shell 11 includes a base plate 112 and a sidewall 111. Sidewall 111 is located on one side of base plate 112, and together they form an enclosed space. Base plate 112 is made of a material with good thermal conductivity, such as oxygen-free copper or ceramics. Other materials include metals such as copper, aluminum, iron, nickel, and molybdenum, or ceramics such as aluminum nitride and silicon carbide. Sidewall 111 is made of ceramic or Kovar alloy.

[0047] Among them, the light-emitting component 2 and the steering component 3 are mounted on one side of the base plate 112, and are located in the enclosed space formed by the side wall 111 and the base plate 112. The steering component 3 is located on the light-emitting side of the light-emitting component 2, and 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 reflecting surface 32 of the steering component 3 is coated with an anti-reflection film to improve the reflectivity. The embodiment of the present application does not limit the correspondence between the steering component 3 and the light-emitting component 2. The steering component 3 can correspond one-to-one with the light-emitting component 2, or at least two light-emitting components 2 in the same row can share one steering component 3.

[0048] The light-emitting assembly 2 includes a first type of light-emitting assembly 23 and a second type of light-emitting assembly 24. The first type of light-emitting assembly 23 and the second type of light-emitting assembly 24 are used to emit lasers of different colors, respectively. The embodiment of the present application does not limit the color of the laser emitted by the light-emitting assembly 2 and can be set as required. For example, the first type of light-emitting assembly 23 emits blue laser light and the second type of light-emitting assembly 24 emits green laser light, or the first type of light-emitting assembly 23 emits green laser light and the second type of light-emitting assembly 24 emits blue laser light.

[0049] Each 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 112, and the light-emitting chip 21 is located on the side of the heat sink substrate 22 facing away from the base plate 112. The light-emitting chip 21 emits light from the side, and the direction of the emitted laser is perpendicular to the stacking direction. The heat sink substrate 22 has a high thermal conductivity coefficient, which can quickly dissipate heat generated by the light-emitting chip 21, thereby preventing damage to the light-emitting chip 21. The material of the heat sink substrate 22 may include one or more of aluminum nitride and silicon carbide.

[0050] The first-type light-emitting components 23 and the second-type light-emitting components 24 are arranged along the first direction X, with at least one second-type light-emitting component 24 disposed between two adjacent first-type light-emitting components 23. By changing the arrangement order of the first-type light-emitting components 23 and the second-type light-emitting components 24, the arrangement order of the different colors of laser light emitted by the laser is correspondingly changed, thereby improving the uniformity of the laser light output.

[0051] The first type of light emitting components 23 and the second type of light emitting components 24 can be arranged in a manner such that the second type of light emitting components 24 are located in the middle and the first type of light emitting components 23 are located on both sides. Figure 6As shown, the arrangement order of the first type light-emitting components 23 and the second type light-emitting components 24 is "abbba". The first type light-emitting components 23 and the second type light-emitting components 24 can also be arranged in a one-to-one alternating manner, that is, a second type light-emitting component 24 is provided between every two first type light-emitting components 23, and the arrangement order is "ababa". The first type light-emitting components 23 and the second type light-emitting components 24 can also be arranged in a two-by-two alternating manner, and the arrangement order is "aabbaa". The number of alternating first type light-emitting components 23 and second type light-emitting components 24 can also be other values, which are not limited here.

[0052] The same type of light emitting components within the same tube shell are connected in series, that is, all first type light emitting components 23 within the first tube shell 11 are connected in series, and all second type light emitting components 24 within the first tube shell 11 are connected in series. Wires are provided between the same type of light emitting components through a gold wire bonding process to achieve electrical connection between the same type of light emitting components.

[0053] Because the tensile force of a wire is related to its length, typically 1 gf is applied to a 1 cm length of wire. To ensure secure connections, a transfer platform 8 is provided to connect the wires between two similar light-emitting components that are far apart, ensuring that each wire segment is short, which improves laser reliability. Transfer platform 8 and the light-emitting components are located on the same side of base plate 112, with the side of transfer platform 8 facing away from base plate 112 comprising a metal layer.

[0054] The laser provided in this embodiment changes the arrangement order of the first-type light-emitting components 23 and the second-type light-emitting components 24, thereby changing the arrangement order of the different colored lasers emitted by the laser and improving the uniformity of the laser light output. However, the circuit connection method of the laser also changes, requiring the installation of a larger number of adapters 8. This circuit connection cannot be achieved within the original size of the tube shell, requiring the increase in the tube shell space volume, which is not conducive to achieving miniaturization of the device.

[0055] In some embodiments, as Figure 7-9 As shown in any figure, in the laser, at least one steering component 3 is provided with a conductive portion 31 on a side facing away from the base plate 112 , and the conductive portion 31 is used to achieve electrical connection of the light-emitting component.

[0056] In this embodiment, Figure 10-11 As shown, the upper surface of the steering component 3 (i.e., the surface on the side facing away from the base plate 112) does not participate in the laser emission light path. By gold plating on the upper surface of the steering component 3, a conductive part 31 is formed. The steering component 3 with the conductive part 31 can also be used as a transfer station. The light-emitting component 2 (the first type of light-emitting component 23 and / or the second type of light-emitting component 24) can be electrically connected through the conductive part, which reduces the number of transfer stations, is beneficial to reducing the volume of the laser, and improves the restrictions of the internal wiring and volume of the laser on the arrangement of the light-emitting component 2.

[0057] For example, Figure 7 As shown, the laser includes two first-class light-emitting components 23, three second-class light-emitting components 24, five steering components 3 and two transfer platforms 8. The three second-class light-emitting components 24 are located between the two first-class light-emitting components 23, wherein the upper surface of the four steering components 3 is provided with a conductive portion 31, the first-class light-emitting components 23 are electrically connected to the conductive portion 31 through a wire, and the second-class light-emitting components 24 are electrically connected to the two transfer platforms 8 through a wire, thereby respectively realizing the electrical connection between the first-class light-emitting components 23 and the second-class light-emitting components 24, and Figure 6 Compared with the laser shown, the number of transfer platforms 8 is reduced, which is beneficial to reducing the volume of the laser and improving the restrictions of the internal wiring and volume of the laser on the arrangement of the light-emitting component 2.

[0058] For example, Figure 8 As shown, the laser includes two first-class light-emitting components 23, three second-class light-emitting components 24, five steering components 3 and four transfer platforms 8. The three second-class light-emitting components 24 are located between the two first-class light-emitting components 23, wherein the upper surfaces of the two steering components 3 are provided with conductive portions 31. The second-class light-emitting components 24 are connected in series via wires and the conductive portions 31, and the first-class light-emitting components 23 are connected in series via wires and the four transfer platforms 8, thereby respectively realizing electrical connections between the first-class light-emitting components 23 and the second-class light-emitting components 24. Figure 6 Compared with the laser shown, the number of transfer platforms 8 is reduced, which is beneficial to reducing the volume of the laser and improving the restrictions of the internal wiring and volume of the laser on the arrangement of the light-emitting component 2.

[0059] For example, Figure 9 As shown, the laser includes three first-class light-emitting components 23, two second-class light-emitting components 24, five steering components 3 and three transfer platforms 8. The two first-class light-emitting components 23 and the second-class light-emitting components 24 are arranged alternately one by one, wherein the upper surface of the four steering components 3 is provided with a conductive portion 31. The first-class light-emitting components 23 are connected in series with the conductive portion 31 through a wire, and the second-class light-emitting components 24 are connected in series with the wire and the three transfer platforms 8. In this way, the circuit connection between the first-class light-emitting components 23 and the second-class light-emitting components 24 is realized respectively, and Figure 6 Compared with the laser shown, the number of transfer platforms 8 is reduced, which is beneficial to reducing the volume of the laser and improving the restrictions of the internal wiring and volume of the laser on the arrangement of the light-emitting component 2.

[0060] In some embodiments, as Figure 12-14As shown, the conductive part 31 includes a first conductive part 311 and / or a second conductive part 312 insulated from each other, the first type light-emitting component 23 is electrically connected through one of the first conductive part 311 and the second conductive part 312, and the second type light-emitting component 24 is electrically connected through the other of the first conductive part 311 and the second conductive part 312.

[0061] In this embodiment, a first conductive portion 311 and / or a second conductive portion 312 that are insulated from each other are formed on the upper surface of the steering component 3 (i.e., the surface on the side facing away from the base plate 112), including the following three situations: only the first conductive portion 311 is provided on the upper surface of the steering component 3, only the second conductive portion 312 is provided on the upper surface of the steering component 3, and both the first conductive portion 311 and the second conductive portion 312 are provided on the upper surface of the steering component.

[0062] For example, Figure 12 As shown, the first type of light-emitting component 23 is electrically connected to the first conductive portion 311 via a wire, and the second type of light-emitting component 24 is electrically connected to the second conductive portion 312 via a wire. Alternatively, the first type of light-emitting component 23 is electrically connected to the second conductive portion 312 via a wire, and the second type of light-emitting component 24 is electrically connected to the first conductive portion 311 via a wire. This eliminates the need for a transfer station, helps reduce the size of the laser, and alleviates the limitations on the arrangement of the light-emitting components 2 caused by the internal wiring and volume of the laser.

[0063] For example, Figure 13-14 As shown, along the third direction Z (i.e., the direction in which the steering component 3 moves away from the base plate 112), a first conductive portion 311, an insulating portion 313, and a second conductive portion 312 are sequentially arranged on the side of the steering component 3 away from the base plate. The first conductive portion 311 and the second conductive portion 312 are stacked, and an insulating portion 313 is arranged between the overlapping areas.

[0064] It should be noted that Figure 13-14 The first conductive portion 311 and the second conductive portion 312 are stacked, and the insulating portion 313 is provided between the overlapping regions, which is only exemplified. However, this does not constitute a limitation on the laser provided in the embodiments of the present application. In other embodiments, the first conductive portion 311 and the second conductive portion 312 can also be provided in other structures, for example, the first conductive portion 311 and the second conductive portion 312 are located in the same plane, the first conductive portion 311 surrounds the second conductive portion 312, or the first conductive portion 311 semi-surrounds the second conductive portion 312, which is not limited here.

[0065] In some embodiments, as Figure 15 As shown, along the third direction Z, the steering component 3 further includes: a welding layer 33 , which is located on a side of the steering component 3 facing the bottom plate 112 and is used for being fixedly connected to the bottom plate 112 .

[0066] In this configuration, the base plate 112 is usually made of oxygen-free copper or ceramic material. By setting a welding layer 33 on the lower surface of the steering component 3, the welding layer 33 can form a stronger connection with the base plate 112, preventing the steering component 3 from falling off, which is beneficial to improving the stability of the laser.

[0067] In some embodiments, as Figure 6-9 As shown in any one of the figures in Figure 12, along the first direction X, the side wall 111 includes two first inner walls arranged opposite to each other, and a first step 91 is provided at one end of the first inner wall close to the base plate 112. The side of the first step 91 facing away from the base plate 112 includes at least two mutually insulated first conductive layers 911, and the first type of light-emitting component 23 and the second type of light-emitting component 24 are electrically connected to different first conductive layers 911 respectively, and the first conductive layer 911 is used to be electrically connected to an external power supply.

[0068] The first step 91 is made of an insulating material, thereby insulating the first conductive layer 911 from the base plate 112. The first step 91 and the sidewall 111 can be made of the same material, with the sidewall 111 and the first step 91 integrated. The first conductive layers 911 located on the same first step 91 are insulated from each other. The first conductive layer 911 is electrically connected to the light-emitting assembly 2 within the first tube shell 11 and is also electrically connected to an external power source to power the light-emitting assembly 2.

[0069] For example, Figure 6-9 As shown in any of the figures in FIG12 , the first step 91 includes two first conductive layers 911 , one of which is electrically connected to the first type light emitting component 23 via a wire, and the other first conductive layer 911 is electrically connected to the first type light emitting component 23 via a wire.

[0070] For example, Figure 16 As shown, along the third direction Z, at least two first conductive layers 911 are provided on the side of the first step 91 facing away from the bottom plate 112. Adjacent first conductive layers 911 are spaced a distance apart, that is, the first conductive layers 911 are insulated from each other. In some embodiments, an insulating layer ( Figure 16 medium black rectangle).

[0071] In some embodiments, as Figure 17-19 As shown in any figure, along the second direction Y, the side wall 111 also includes two second inner walls arranged opposite to each other, and at least one second inner wall is provided with a second step 92 at one end close to the base plate 112. The side of the second step 92 facing away from the base plate 112 includes a second conductive layer 921, and the second conductive layer 921 is used to realize the electrical connection of the light-emitting component 2. The second direction Y is perpendicular to the first direction X.

[0072] The second step 92 is made of an insulating material, thereby insulating the second conductive layer 921 from the bottom plate 112. The second step 92 and the sidewall 111 can be made of the same material, with the sidewall 111 and the second step 92 integrated. The second step 92, with the second conductive layer 921, functions similarly to the transfer platform 8. The second step 92 extends along the first direction X and can be configured as a narrow strip. This allows for connecting wires without increasing the width of the package in the second direction Y.

[0073] For example, Figure 17 As shown, the laser includes two first-class light-emitting components 23, three second-class light-emitting components 24, five steering components 3 and two second steps 92. The three second-class light-emitting components 24 are located between the two first-class light-emitting components 23, wherein the upper surfaces of the four steering components 3 are provided with conductive portions 31, and the first-class light-emitting components 23 are electrically connected to the conductive portions 31 through wires. The two second steps 92 are provided with a second conductive layer 921 on the side away from the bottom plate 112, and the second-class light-emitting components 24 are electrically connected through the wires and the second conductive layer 921, thereby respectively realizing the electrical connection between the first-class light-emitting components 23 and the second-class light-emitting components 24, and Figure 6 Compared with the laser shown, there is no need to set up the transfer platform 8, which is beneficial to reducing the volume of the laser and improving the restrictions of the internal wiring and volume of the laser on the arrangement of light-emitting components.

[0074] For example, Figure 18 As shown, the laser includes three first-class light-emitting components 23, two second-class light-emitting components 24, five steering components 3 and three second steps 92. The two first-class light-emitting components 23 and the second-class light-emitting components 24 are arranged alternately one by one, wherein the upper surface of the four steering components 3 is provided with a conductive portion 31, and the first-class light-emitting components 23 are electrically connected to the conductive portion 31 through a wire. The three second steps 92 are provided with a second conductive layer 921 on the side away from the bottom plate 112, and the second-class light-emitting components 24 are electrically connected through a wire and the second conductive layer 921. In this way, the electrical connection between the first-class light-emitting components 23 and the second-class light-emitting components 24 is realized respectively, and Figure 6 Compared with the laser shown, there is no need to set up the transfer platform 8, which is beneficial to reducing the volume of the laser and improving the restrictions of the internal wiring and volume of the laser on the arrangement of light-emitting components.

[0075] In some embodiments, as Figure 20 As shown, the second conductive layer 921 includes a third conductive part 9211 and a fourth conductive part 9212 that are insulated from each other; the structure of the third conductive part 9211 and the fourth conductive part 9212 is similar to that of the first conductive layer 911, and the third conductive part 9211 and the fourth conductive part 9212 are arranged along the second direction Y, and the first conductive layer 911 is also arranged along the second direction Y.

[0076] The first type light emitting component 23 is electrically connected via one of the third conductive portion 9211 and the fourth conductive portion 9212 , and the second type light emitting component 24 is electrically connected via the other of the third conductive portion 9211 and the fourth conductive portion 9212 .

[0077] For example, Figure 20 As shown, the laser includes two first-class light-emitting components 23, three second-class light-emitting components 24, five steering components 3 and two second steps 92. The three second-class light-emitting components 24 are located between the two first-class light-emitting components 23. The two second steps 92 are provided with a second conductive layer 921 on the side away from the bottom plate 112. The second conductive layer 921 includes a third conductive portion 9211 and a fourth conductive portion 9212. The first-class light-emitting components 23 are electrically connected to the third conductive portion 9211 through a wire, and the second-class light-emitting components 24 are electrically connected to the fourth conductive portion 9212 through a wire. In this way, the electrical connection between the first-class light-emitting components 23 and the second-class light-emitting components 24 is realized respectively, and the first-class light-emitting components 23 and the second-class light-emitting components 24 are electrically connected. Figure 6 Compared with the laser shown, there is no need to set up the transfer platform 8, which is beneficial to reducing the volume of the laser and improving the restrictions on the arrangement of the light-emitting component 2 caused by the internal wiring and volume of the laser.

[0078] In other embodiments, the first type light emitting component 23 is connected in series with the fourth conductive portion 9212 via a wire, and the second type light emitting component 24 is connected in series with the third conductive portion 9211 via a wire, which is not limited here.

[0079] In some embodiments, as Figure 21 As shown, the laser further includes a protective element 25, which is located on the side of the light-emitting assembly facing away from the base plate 112 and corresponds one-to-one with the light-emitting assembly 2. Specifically, the protective element 25 is located on the side of the heat sink substrate 22 facing away from the base plate 112. The protective element 25 serves to prevent high voltage from instantly breaking down the light-emitting chip 21. The protective elements 25 corresponding to the same type of light-emitting assembly are connected in series, that is, the protective elements 25 on the first type of light-emitting assembly 23 are connected in series, and the protective elements 25 on the second type of light-emitting assembly 24 are connected in series. The protective elements 25 can be electrically connected via the second conductive layer 921 of the second step 92, and can also be electrically connected via the conductive portion 31 on the steering component 3. For example, the protective element 25 includes a Zener diode.

[0080] For example, Figure 21As shown, the thick solid line represents the wires connecting the light-emitting components, and the thin dotted line represents the wires connecting the protection element 25. The laser includes two first-class light-emitting components 23, three second-class light-emitting components 24, five steering components 3, two second steps 92 and a protection element 25. The three second-class light-emitting components 24 are located between the two first-class light-emitting components 23. Among them, a conductive part 31 is provided on the side of the steering component 3 facing away from the base plate 112, and the conductive part 31 includes a first conductive part 311 and a second conductive part 312. The two second steps 92 are provided on the side facing away from the base plate 112 with a second conductive layer 921, and the second conductive layer 921 includes a third conductive part 9211 and a fourth conductive part 9212. The first type of light-emitting component 23 is electrically connected to the third conductive part 9211 through a wire, and the protection element 25 corresponding to the first type of light-emitting component 23 is electrically connected to the fourth conductive part 9212 through a wire. The second type of light-emitting component 24 is electrically connected to the first conductive part 311 through a wire, and the protection element 25 corresponding to the second type of light-emitting component 24 is electrically connected through a wire and the second conductive part 312. In this way, the electrical connection of the first type of light-emitting component 23, the second type of light-emitting component 24 and the corresponding protection element 25 is realized respectively, and Figure 6 Compared with the laser shown, there is no need to set up the transfer platform 8, which is beneficial to reducing the volume of the laser and improving the restrictions on the arrangement of the light-emitting component 2 caused by the internal wiring and volume of the laser.

[0081] In some embodiments, as Figure 22 As shown, the laser also includes: a mounting substrate 7, which is located on the side of the bottom plate 112 away from the side wall 111, and the mounting substrate includes a connecting pad 71, which is used to electrically connect to an external power supply, and the connecting pad 71 is electrically connected to the light-emitting component 2.

[0082] The connection pads 71 ​​include a first pad 711 and a second pad 712. The first pad 711 includes one of a positive polarity pad and a negative polarity pad, and the second pad 712 includes the other of a positive polarity pad and a negative polarity pad. Each type of light-emitting component is electrically connected to its corresponding first pad and second pad. For example, the laser includes two types of light-emitting components, blue and green. The two ends of the series circuit of the blue light-emitting component are electrically connected to the blue positive polarity pad (B+) and the blue negative polarity pad (B-), respectively. The two ends of the series circuit of the green light-emitting component are electrically connected to the green positive polarity pad (G+) and the green negative polarity pad (G-), respectively.

[0083] In some embodiments, a connecting wire is provided in the side wall 111 and / or the bottom plate 112, one end of the connecting wire is connected to the first conductive layer 911, and the other end is electrically connected to the conductive structure located at the bottom of the tube shell (i.e., the side of the bottom plate 112 facing the mounting substrate 7); a connecting pattern corresponding to the conductive structure is provided on the mounting substrate 7, and when the tube shell and the mounting substrate 7 are welded together, the conductive structure is electrically connected to the connecting pattern, and the connecting pattern is electrically connected to the connecting pad 71 through the interconnection area within the board, thereby realizing the electrical connection between the light-emitting component 2 and the connecting pad.

[0084] In some embodiments, as Figure 23 As shown, the connection pads include: a first pad 711 and a second pad 712. The first type light emitting component 23 and the second type light emitting component 24 are electrically connected to the same first pad 711, and the first type light emitting component 23 and the second type light emitting component 24 are electrically connected to different second pads 712. In this arrangement, the first type light emitting component 23 and the second type light emitting component share the same first pad 711, which can reduce the number of connection pads 71.

[0085] For example, Figure 23 As shown, two first-type light-emitting components 23 are connected in series, and three second-type light-emitting components 24 are connected in series. The first-type light-emitting components 23 and the second-type light-emitting components 24 are electrically connected to the same positive polarity pad, and the first-type light-emitting components 23 and the second-type light-emitting components 24 are electrically connected to different negative polarity pads respectively.

[0086] In some embodiments, as Figure 22 and 24 As shown, the laser further includes: a second housing 12 and a third-type light-emitting assembly 26. The second housing 12 and the first housing 11 are arranged along a second direction Y, which is perpendicular to the first direction X. The third-type light-emitting assembly 26 is encapsulated within the second housing 12, and all third-type light-emitting assemblies 26 within the second housing 12 are connected in series. The second housing 12 also includes a steering member 3, a first step 91, and a first conductive layer 911. The layout and circuit connections are similar to those of the first-type light-emitting assembly 23 (or second-type light-emitting assembly 24) within the first housing 11 and are not further described here.

[0087] The first, second, and third light-emitting components 23, 24, and 26 each emit lasers of different colors. For example, the first light-emitting component 23 emits blue laser light, the second light-emitting component 24 emits green laser light, and the third light-emitting component 26 emits red laser light. The first, second, and third light-emitting components 23, 24, and 26 are electrically connected to the same first soldering pad 711, and are electrically connected to different second soldering pads 712.

[0088] For example, Figure 24 As shown, two first-type light-emitting components 23 and three second-type light-emitting components 24 are encapsulated in the first tube shell 11, and the two first-type light-emitting components 23 are connected in series, and the three second-type light-emitting components 24 are connected in series. Five third-type light-emitting components 26 are encapsulated in the second tube shell 12, and the five third-type light-emitting components 26 are connected in series; the first-type light-emitting components 23, the second-type light-emitting components 24, and the third-type light-emitting components 26 are electrically connected to the same positive polarity pad, and the first-type light-emitting components 23, the second-type light-emitting components 24, and the third-type light-emitting components 26 are electrically connected to different negative polarity pads, respectively.

[0089] It should be noted that Figure 23 and 24 The example of different types of light-emitting components being electrically connected to the same positive polarity pad, i.e., sharing a common anode, is merely shown, and does not constitute a limitation on the laser provided in the embodiments of this application. In other embodiments, different types of light-emitting components may also be electrically connected to the same negative polarity pad, i.e., sharing a common cathode, which is not limited here.

[0090] 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 them. 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0091] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A laser, characterized in that: include: A first tube shell includes a bottom plate and a side wall, wherein the side wall is located on one side of the bottom plate and forms an enclosed space with the bottom plate; a light-emitting assembly located on the same side of the bottom plate as the sidewall and within the enclosed space, the light-emitting assembly comprising a first type of light-emitting assembly and a second type of light-emitting assembly, the first type of light-emitting assembly and the second type of light-emitting assembly being configured to respectively emit lasers of different colors, the first type of light-emitting assembly and the second type of light-emitting assembly being arranged along a first direction, with at least one second type of light-emitting assembly being disposed between two adjacent first type of light-emitting assemblies; a deflection component, located 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, a conductive portion is provided on a side of the steering component facing away from the base plate, and the conductive portion is used to achieve electrical connection of the light-emitting component.

2. The laser according to claim 1, characterized in that The conductive part includes a first conductive part and / or a second conductive part that are insulated from each other, the first type of light-emitting component is electrically connected through one of the first conductive part and the second conductive part, and the second type of light-emitting component is electrically connected through the other of the first conductive part and the second conductive part.

3. The laser according to claim 2, characterized in that The steering component also includes: The welding layer is located on a side of the steering component facing the bottom plate and is used for being fixedly connected to the bottom plate.

4. The laser according to claim 1, characterized in that Along the first direction, the side wall includes two first inner walls arranged opposite to each other, and a first step is provided at one end of the first inner wall close to the base plate. The side of the first step facing away from the base plate includes at least two mutually insulated first conductive layers, and the first type of light-emitting component and the second type of light-emitting component are electrically connected to different first conductive layers respectively, and the first conductive layer is used to be electrically connected to an external power supply.

5. The laser according to claim 4, characterized in that Along the second direction, the side wall also includes two second inner walls arranged opposite to each other, at least one of the second inner walls is provided with a second step at one end close to the base plate, and the side of the second step facing away from the base plate includes a second conductive layer, and the second conductive layer is used to realize the electrical connection of the light-emitting component, and the second direction is perpendicular to the first direction.

6. The laser according to claim 5, characterized in that The second conductive layer includes a third conductive portion and a fourth conductive portion that are insulated from each other; The third conductive portion and the fourth conductive portion are arranged along the second direction; The first type of light emitting components are electrically connected via one of the third conductive portion and the fourth conductive portion, and the second type of light emitting components are electrically connected via the other of the third conductive portion and the fourth conductive portion.

7. The laser according to claim 5, characterized in that Also includes: The protection element is located on a side of the light emitting component away from the bottom plate and corresponds to the light emitting component one by one. The protection elements corresponding to the same light emitting components are electrically connected through the second conductive layer and / or the conductive part.

8. The laser according to any one of claims 1 to 7, characterized in that: Also includes: The mounting substrate is located on a side of the bottom plate away from the side wall. The mounting substrate includes a connecting pad, which is used to be electrically connected to an external power source and is electrically connected to the light-emitting component.

9. The laser according to claim 8, characterized in that The connecting pad includes: A first soldering pad and a second soldering pad, the first type of light-emitting component and the second type of light-emitting component are electrically connected to the same first soldering pad, and the first type of light-emitting component and the second type of light-emitting component are electrically connected to different second soldering pads respectively.

10. The laser according to claim 9, characterized in that Also includes: a second tube shell, wherein the second tube shell and the first tube shell are arranged along a second direction, and the second direction is perpendicular to the first direction; A third type of light emitting component is encapsulated in the second tube shell; Among them, the first type of light-emitting component, the second type of light-emitting component and the third type of light-emitting component are electrically connected to the same first solder pad, and the first type of light-emitting component, the second type of light-emitting component and the third type of light-emitting component are electrically connected to different second solder pads respectively.

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