Laser

Abstract

The embodiment of the invention provides a laser, and relates to the technical field of laser packaging. According to the laser, the light path adjusting component is used for adjusting the light path of the first-color laser emitted by part of the first-type light-emitting assembly, so that the first-color laser emitted from the light-transmitting sealing component is located on the two sides of the second-color laser, the arrangement sequence of the different-color laser emitted by the laser is changed, and the light emitting uniformity of the laser is improved; and meanwhile, the light path adjusting component is arranged in the tube shell, so that the external space of the laser is not occupied any more, and the light path and the structure of the laser have better compatibility.

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 (B) and green (G) 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] The technical solutions provided in this application are as follows:

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

[0007] The tube shell comprises 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 side wall 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 emitting a first color laser, the second type of light-emitting assembly emitting a second color laser, the first type of light-emitting assembly and the second type of light-emitting assembly being arranged along a first direction, with light-emitting assemblies of the same type being adjacent to each other;

[0009] a light-transmitting sealing component, located on a side of the side wall facing away from the bottom plate;

[0010] The optical path adjustment component is located on the side of the transparent sealing component facing the side wall, and is used to adjust the optical path of the first color laser emitted by part of the first type light-emitting component so that the first color laser emitted from the transparent sealing component is located on both sides of the second color laser.

[0011] It can be seen from the above technical solution that the laser provided in the present application uses an optical path adjustment component to adjust the optical path of the first color laser emitted by part of the first type of light-emitting component, so that the first color laser emitted from the light-transmitting sealing component is located on both sides of the second color laser, thereby changing the arrangement order of different color lasers emitted by the laser and improving the uniformity of the laser light output; at the same time, the optical path adjustment component is built into the tube shell and no longer occupies the external space of the laser, so that the optical path and structure of the laser have better compatibility. 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 another rhombus prism in the related art;

[0017] Figure 5 Schematic diagram of the optical path of a laser 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 structural diagram of a first adjustment unit provided in an embodiment of the present application;

[0023] Figure 11 A schematic structural diagram of another first adjustment unit provided in an embodiment of the present application;

[0024] Figure 12 A schematic structural diagram of a diffraction unit provided in an embodiment of the present application;

[0025] Figure 13 A schematic structural diagram of a Fresnel structure surface provided in an embodiment of the present application;

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

[0027] Figure 15 A schematic structural diagram of a second lens provided in an embodiment of the present application;

[0028] Figure 16 A schematic structural diagram of another second lens provided in an embodiment of the present application;

[0029] Figure 17 A schematic structural diagram of a step provided in an embodiment of the present application;

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

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

[0032] Figure 20 A schematic structural diagram of an optical path adjustment component provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] like Figure 1-2As shown, the multi-chip packaged laser 100' mainly includes a tube shell 1', 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 1' includes a base plate 11' and a side wall 12', 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 base plate 11', 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 12' away from the base plate 11', and the collimating lens 6' is located on the side of the glass cover plate away from the side wall 12'.

[0037] In the related art, one of the methods to solve the color cast of the image quality is to evenly distribute the RGB light emitted by the laser 100', which is beneficial to the uniform light of the rear optical path. Figure 3 As shown, the laser encapsulates the red light-emitting components (serial number 1 to 4) in one tube shell 1', and the blue-green light-emitting components (serial number 5 to 9) in another tube shell 1'. Due to internal wiring limitations, the blue-green light-emitting components are arranged in the order of "BBGGG". This arrangement causes the blue and green lights to be biased to one side, which is not conducive to uniform light in the rear-end optical path.

[0038] Regarding the arrangement of the blue-green light emitting components, a rhombus prism is added to the external optical path of the laser 100' in the related art, such as Figure 4-5 As shown, the rhombus prism 7' has two parallel reflective surfaces. These reflective surfaces deflect the blue laser light emitted by one of the two blue light-emitting components to the right of the green light-emitting component group. The emitted laser light is arranged in a "BGGGB" pattern, resulting in a uniform distribution of the emitted light. However, placing the rhombus prism 7' 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.

[0039] 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 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, located on the same side of the base plate as the side wall and located in the enclosed space, the light-emitting component including a first type of light-emitting component and a second type of light-emitting component, the first type of light-emitting component emits a first color laser, the second type of light-emitting component emits a second color laser, the first type of light-emitting component and the second type of light-emitting component are arranged along a first direction, and the same type of light-emitting components are arranged adjacent to each other; a light-transmitting sealing component, located on the side of the side wall away from the base plate; an optical path adjustment component, located on the side of the light-transmitting sealing component facing the side wall, for adjusting the optical path of the first color laser emitted by part of the first type of light-emitting component, so that the first color laser emitted from the light-transmitting sealing component is located on both sides of the second color laser. Therefore, the laser uses the optical path adjustment component to adjust the optical path of the first color laser emitted by part of the first type of light-emitting component, so that the first color laser emitted from the light-transmitting sealing component is located on both sides of the second color laser, thereby changing the arrangement order of different color lasers emitted by the laser and improving the uniformity of the laser light output; at the same time, the optical path adjustment component is built into the tube shell and no longer occupies the external space of the laser, so that the optical path and structure of the laser have better compatibility.

[0040] The following is an illustrative description of a laser provided in an embodiment of the present application with reference to the accompanying drawings.

[0041] In some embodiments, as Figure 6 As shown in FIG7 , the laser 100 includes a tube shell 1 , a light-emitting component 2 , a light-transmitting sealing component 4 and an optical path adjustment component 5 .

[0042] The tube shell 1 includes a base plate 11 and sidewalls 12. Sidewalls 12 are located on one side of base plate 11, forming an enclosed space with the base plate 11. Base plate 11 is made of a material with good thermal conductivity, such as oxygen-free copper or ceramic. Other materials include metals such as copper, aluminum, iron, nickel, and molybdenum, or ceramics such as aluminum nitride and silicon carbide. Sidewalls 12 are made of ceramic or Kovar alloy. Base plate 11 and sidewalls 12 can be fixedly connected or integrated, without limitation.

[0043] Among them, the laser 100 includes at least two first-type light-emitting components 21 and at least one second-type light-emitting component 22. The light-emitting component 2 is mounted on one side of the base plate 11 and is located in the enclosed space formed by the side wall 12 and the base plate 11. The light-emitting component 2 includes a first-type light-emitting component 21 and a second-type light-emitting component 22. The first-type light-emitting component 21 and the second-type light-emitting component 22 are used to emit lasers of different colors respectively. The first-type light-emitting component 21 emits a first-color laser, and the second-type light-emitting component 22 emits a second-color laser. The embodiment of the present application does not limit the color of the laser emitted by the light-emitting component 2, and can be set according to requirements. For example, the first-type light-emitting component 21 emits a blue laser, and the second-type light-emitting component 22 emits a green laser, or the first-type light-emitting component 21 emits a green laser, and the second-type light-emitting component 22 emits a blue laser.

[0044] The first type of light emitting components 21 and the second type of light emitting components 22 are arranged along the first direction X, and the same type of light emitting components are arranged adjacent to each other. Figure 6 As shown in FIG7 , the laser 100 includes two first-type light-emitting components 21 and three second-type light-emitting components 22 . The two first-type light-emitting components 21 are arranged adjacent to each other, and the three second-type light-emitting components 22 are arranged adjacent to each other. Correspondingly, the arrangement order of all the light-emitting components 2 is “BBGGG”.

[0045] The light-transmitting sealing component 4 is located on the side of the sidewall 12 facing away from the bottom plate 11. The side of the light-transmitting sealing component 4 facing away from the sidewall 12 is the light-emitting surface of the laser 100. The light-transmitting sealing component 4, the sidewall 12, and the bottom plate 11 form a sealed space. The light-transmitting sealing component 4 can be sealed with glue (such as UV glue) or solder to ensure that the laser 100 has a high airtightness level. The light-transmitting sealing component 4 is made of a light-transmitting material such as sapphire or quartz, and has a high transmittance to the laser light emitted by the light-emitting component 2.

[0046] The optical path adjustment component 5 is located on the side of the light-transmitting sealing component 4 facing the side wall 12, that is, it is located in the sealed space formed by the light-transmitting sealing component 4, the side wall 12, and the bottom plate 11, and does not occupy the external space of the laser 100. The optical path adjustment component 5 is an optical component with high transmittance to laser light, and its manufacturing material is a light-transmitting material such as sapphire or quartz. In the embodiment of the present application, the optical path adjustment component 5 and the light-transmitting sealing component 4 can be fixedly connected or integrally arranged, which is not limited here.

[0047] The optical path adjustment component 5 is used to adjust the optical path of the first color laser emitted by part of the first type light-emitting component 21, so that the first color laser finally emitted from the light-transmitting sealing component 4 is located on both sides of the second color laser, thereby changing the arrangement order of the different color lasers emitted by the laser 100 and improving the uniformity of the light output of the laser 100.

[0048] For example, Figure 6 As shown, the laser 100 includes two first-type light-emitting components 21 and three second-type light-emitting components 22. Along the first direction X, the two first-type light-emitting components 21 are adjacent to each other, and the three second-type light-emitting components 22 are adjacent to each other; the optical path adjustment component 5 only changes the optical path of the first-color laser emitted by the outer one of the two first-type light-emitting components 21, and the optical path of this part of the first-color laser is deflected in the optical path adjustment component 5. After the optical path is adjusted, the first-color laser is incident on the light-transmitting sealing component 4 and is emitted from the light-transmitting sealing component 4. Along the first direction X, the initial position of this part of the first-color laser is located at the light-transmitting sealing component 4. The left area of ​​the sealing component 4, and the final emission position is located in the right area of ​​the light-transmitting sealing component 4; the optical path adjustment component 5 does not change the optical path of the first color laser emitted by the other first-type light-emitting component 21 and the second color laser emitted by the second-type light-emitting component 22. This part of the laser is incident on the light-transmitting sealing component 4 through the optical path adjustment component 5 and is emitted from the light-transmitting sealing component 4. The initial position and the final emission position of the laser are not changed, so that the second color laser emitted from the light-transmitting sealing component 4 is located in the middle, and the first color laser is located on both sides of the second color laser, which improves the uniformity of the light output of the laser 100.

[0049] For example, Figure 7 As shown, the laser 100 includes two first-type light-emitting components 21 and three second-type light-emitting components 22. Along the first direction X, the two first-type light-emitting components 21 are adjacent to each other, and the three second-type light-emitting components 22 are adjacent to each other; the optical path adjustment component 5 only changes the optical path of the first-color laser emitted from the inner side of the two first-type light-emitting components 21, and the optical path of this part of the first-color laser is deflected in the optical path adjustment component 5. After the optical path is adjusted, the first-color laser is incident on the light-transmitting sealing component 4 and emitted from the light-transmitting sealing component 4. Along the first direction X, the initial position of this part of the first-color laser is located at the light-transmitting sealing component 4. The left area of ​​the sealing component 4, and the final emission position is located in the right area of ​​the light-transmitting sealing component 4; the optical path adjustment component 5 does not change the optical path of the first color laser emitted by the other first-type light-emitting component 21 and the second color laser emitted by the second-type light-emitting component 22. This part of the laser is incident on the light-transmitting sealing component 4 through the optical path adjustment component 5 and is emitted from the light-transmitting sealing component 4. The initial position and the final emission position of the laser are not changed, so that the second color laser emitted from the light-transmitting sealing component 4 is located in the middle, and the first color laser is located on both sides of the second color laser, which improves the uniformity of the light output of the laser 100.

[0050] It should be noted that Figure 6FIG7 merely illustrates an exemplary embodiment of a laser 100 including two first-type light-emitting components 21 and three second-type light-emitting components 22, but does not limit the laser provided in the embodiments of the present application. In other embodiments, the number of first-type light-emitting components and second-type light-emitting components can be flexibly set according to needs and is not limited here.

[0051] The laser 100 provided in the embodiment of the present application includes: a tube shell 1, including a base plate 11 and a side wall 12, the side wall 12 is located on one side of the base plate 11 and forms an enclosed space with the base plate; a light-emitting component 2, located on the same side of the base plate 11 as the side wall 12, and located in the enclosed space, the light-emitting component 2 includes a first type of light-emitting component 21 and a second type of light-emitting component 22, the first type of light-emitting component 21 emits a first color laser, and the second type of light-emitting component 22 emits a second color laser, the first type of light-emitting component 21 and the second type of light-emitting component 22 are arranged along a first direction X, and the same type of light-emitting components are arranged adjacent to each other; a light-transmitting sealing component 4, located on the side of the side wall 12 away from the base plate 11; an optical path adjustment component 5, located on the side of the light-transmitting sealing component 4 facing the side wall 12, and used to adjust the optical path of the first color laser emitted by part of the first type of light-emitting component 21, so that the first color laser emitted from the light-transmitting sealing component 4 is located on both sides of the second color laser. Therefore, the laser 100 uses the optical path adjustment component 5 to adjust the optical path of the first color laser emitted by part of the first type light-emitting component 21, so that the first color laser emitted from the light-transmitting sealing component 4 is located on both sides of the second color laser, thereby changing the arrangement order of the different color lasers emitted by the laser 100 and improving the uniformity of the light output of the laser 100; at the same time, the optical path adjustment component 5 is built into the tube shell 1 and no longer occupies the external space of the laser 100, so that the optical path and structure of the laser 100 have better compatibility.

[0052] In some embodiments, as Figure 6-8 As shown in any figure, the laser 100 further includes a steering component 3 , which is located on the light-emitting side of the light-emitting component 2 and is used to deflect the laser light emitted by the light-emitting component 2 to the light-emitting surface side of the laser 100 .

[0053] The steering component 3 is made of materials such as borosilicate glass, quartz, and silicon. The reflective surface 32 of the steering component 3 is coated with an antireflection coating to improve reflectivity. The present embodiment does not limit the correspondence between the steering components 3 and the light-emitting components 2. Steering components 3 can correspond one-to-one with each light-emitting component 2, or at least two light-emitting components 2 in the same row can share a single steering component 3.

[0054] Each light-emitting component 2 includes a light-emitting chip 23 and a heat sink substrate 24. The light-emitting chip 23 and the heat sink substrate 24 are stacked along a direction Z perpendicular to the plane of the base plate. The heat sink substrate 24 is located on the side of the light-emitting component 2 facing the base plate 11, and the light-emitting chip 23 is located on the side of the heat sink substrate 24 facing away from the base plate 11. The light-emitting chip 23 is a side-emitting light-emitting chip. The light-emitting chip emits laser light in a second direction Y. The second direction Y is perpendicular to the first direction X and is also perpendicular to the direction Z perpendicular to the plane of the base plate. The heat sink substrate 24 has a large thermal conductivity coefficient and can quickly dissipate heat when the light-emitting chip 23 emits light to avoid damage to the light-emitting chip 23. The material of the heat sink substrate 24 can include one or more of aluminum nitride and silicon carbide.

[0055] For example, Figure 8 As shown, the first incident surface of the optical path adjusting component 5 matches the reflective surface of the deflecting component 3 , so that the laser light reflected by the deflecting component 3 can be incident on the optical path adjusting component 5 .

[0056] In some embodiments, as Figure 6 As shown in or 7, the optical path adjustment component 5 includes a first adjustment part 51 and a second adjustment part 52, and the first adjustment part 51 is arranged parallel to the second adjustment part 52; the first adjustment part 51 is used to adjust the optical path of the first color laser incident on the first adjustment part 51, so that the first color laser after the optical path is adjusted is incident on the second adjustment part 52; the second adjustment part 52 adjusts the optical path of the first color laser incident on the second adjustment part 52, so that the first color laser after the optical path is adjusted is incident on the light-transmitting sealing component 4.

[0057] In this embodiment, the first adjustment part 51 and the second adjustment part 52 are arranged opposite to and in parallel. The ways in which the two adjust the light path include but are not limited to reflection and scattering, and also include all light path adjustment methods known to those skilled in the art, which are not limited here.

[0058] It should be noted that Figure 6 and 7 The optical path adjustment component 5 is shown as including a rhombus prism, and the first adjustment portion 51 and the second adjustment portion 52 are respectively two internal reflection surfaces of the rhombus prism arranged opposite to each other, but this does not constitute a limitation on the laser 100 provided in the embodiment of the present application. In other embodiments, the types of the first adjustment portion 51 and the second adjustment portion 52 can be set as required. For example, the first adjustment portion 51 and the second adjustment portion 52 can also be two parallel mirrors, and the reflection surfaces of the mirrors are at a predetermined angle with respect to the first direction X, which is not limited here.

[0059] In some embodiments, as Figure 6As shown in FIG7 , the optical path adjustment component 5 also includes a first incident surface and a first exit surface that are relatively arranged. The laser emitted by the light-emitting component 2 enters the optical path adjustment component 5 through the first incident surface. The first color laser incident on the first adjustment part 51 is adjusted (reflected or scattered) to the second adjustment part 52, and then adjusted (reflected or scattered) to the first exit surface through the second adjustment part 52. After passing through the first exit surface and the incident surface of the light-transmitting sealing component 4, it enters the interior of the light-transmitting sealing component 4 and is emitted from the exit surface of the light-transmitting sealing component 4. The first color laser and the second color laser that are not incident on the first adjustment part 51 enter the interior of the light-transmitting sealing component 4 after passing through the first exit surface and the incident surface of the light-transmitting sealing component 4 and are emitted from the exit surface of the light-transmitting sealing component 4. Finally, the second color laser emitted from the exit surface of the light-transmitting sealing component 4 is located in the middle, and the first color laser is located on both sides of the second color laser, thereby improving the uniformity of the light output of the laser 100.

[0060] In this embodiment, the optical path adjustment component 5 is a rhombic prism.

[0061] In some embodiments, as Figure 6-8 As shown in any figure, the optical path adjustment component 5 is fixedly connected to the light-transmitting sealing component 4 .

[0062] In this embodiment, the optical path adjustment component 5 and the light-transmitting sealing component 4 can be fixedly connected by using transparent optical adhesive.

[0063] In some embodiments, as Figure 9 As shown, the optical path adjustment component 5 and the light-transmitting sealing component 4 are integrated.

[0064] In this embodiment, the optical path adjustment component 5 and the light-transmitting sealing component 4 are made of the same material and are integrated into one, which is beneficial to simplifying the installation process.

[0065] In some embodiments, as Figure 10 As shown in FIG11 , the first adjustment portion 51 includes a curved surface and / or a microstructure surface.

[0066] Because the light-emitting chip 23 inherently has a divergence angle, the energy of the first-color laser light incident on the first adjustment portion 51 decreases as the optical path increases, causing the laser beam to diverge and distribute its power over a larger surface, resulting in a lower power density. Therefore, in this embodiment, the first adjustment portion 51 also functions to collimate and converge the laser beam to improve the power density of this portion of the first-color laser light.

[0067] For example, Figure 10 As shown, the first adjustment portion 51 is set as a curved surface, which collimates and / or focuses the incident first color laser, reduces the spot size of the laser beam at the transparent sealing component 4, and thus improves the power density of this part of the first color laser.

[0068] For example, Figure 11 As shown, the first adjustment portion 51 is set as a microstructure surface, which collimates and / or focuses the incident first color laser, reduces the spot size of the laser beam at the transparent sealing component 4, and thus improves the power density of this part of the first color laser.

[0069] In some embodiments, the microstructure surface includes a Fresnel structure surface and / or a diffraction element.

[0070] For example, the microstructure surface includes a diffraction unit, which has an uneven surface. The surface morphology of the diffraction unit can be set according to parameters such as the wavelength of the laser, the beam quality, and the near-field light intensity distribution. The diffraction unit adjusts the phase of the first color laser incident on the first adjustment part 51. When this part of the first color laser passes through the diffraction unit, it can form a collimated beam at a certain distance. The processing effect is as follows: Figure 12 shown.

[0071] For example, the microstructure surface includes a Fresnel structure surface, which can be formed on the first adjustment portion 51 by etching. The Fresnel structure surface includes a series of zigzag grooves, each of which has a different inclination angle. Each groove can be regarded as an independent small lens. When the first color laser with a divergence angle passes through the Fresnel structure surface, it can be corrected into parallel light. The Fresnel structure surface actually uses the principle of light refraction to collimate the first color laser incident on the first adjustment portion 51, thereby achieving collimation of the first color laser of this part. The processing effect is as follows: Figure 13 shown.

[0072] In some embodiments, the first adjustment portion 51 includes a multi-focal curved surface.

[0073] In this embodiment, the first adjustment portion 51 processes the incident first color laser light in a multi-focal curved surface manner, which improves the processing efficiency of the first adjustment portion 51 and is beneficial to improving the light energy utilization rate of the laser 100 .

[0074] The embodiment of the present application does not limit the curvature radius of the multi-focal curved surface. The curvature radius of each curved surface can be the same or different, which is not limited here.

[0075] In some embodiments, the first adjustment portion 51 includes a multi-focal free surface, which includes but is not limited to a diffraction surface and a Fresnel structure surface.

[0076] In some embodiments, the first adjustment portion 51 includes a curved surface and / or a microstructured surface, and the second adjustment portion 52 includes a curved surface and / or a microstructured surface.

[0077] Because the fast-axis divergence angle of laser 100 is greater than the slow-axis divergence angle, the laser beam emitted by light-emitting chip 23, after being reflected by the deflection component, reaches the first adjustment unit 51. After the optical path is adjusted by the first adjustment unit 51, the first-color laser beam is focused to a single point within the optical path adjustment unit 5, forming a virtual light source. The light beam emitted by this virtual light source is then adjusted into a parallel beam by the first adjustment unit 51. Simulation calculations show that the divergence angle of the first-color laser beam emitted from the second adjustment unit 52 is 0°, which is consistent with theoretical analysis, demonstrating that this embodiment can achieve collimation of the first-color laser beam.

[0078] In some embodiments, as Figure 14 As shown, the laser 100 further includes: a first lens 6, which is located on the side of the light-transmitting sealing component 4 away from the side wall 12, that is, on the light-emitting surface side of the laser 100, and is used to collimate the laser emitted from the light-transmitting sealing component 4.

[0079] In this embodiment, the optical path adjusting component 5 is first used to adjust the optical path of the first color laser emitted by part of the first type light emitting components 21 , and then the first lens 6 is used to collimate the laser emitted from the transparent sealing component 4 .

[0080] In some embodiments, as Figure 15 As shown in FIG16 , the laser 100 further includes: a steering component 3 and a second lens 7 . The steering component 3 and the light-emitting component 2 are located on the same side of the base plate 11 and on the light-emitting side of the light-emitting component 2 . The second lens 7 is located on the side of the steering component 3 facing away from the base plate 11 .

[0081] The steering component 3 includes a reflective surface opposite the light-emitting side of the light-emitting assembly 2. The second lens 7 includes a lens portion and a fixed portion. The fixed portion is located on the side of the steering component facing away from the base plate 11. The lens portion includes an incident surface and an exit surface that are arranged opposite each other. The incident surface of the second lens 7 matches the reflective surface of the steering component 3. The exit surface of the second lens 7 is a curved surface for collimating the laser light entering the second lens 7. The laser light emitted by the light-emitting assembly 2 is deflected by the reflective surface of the steering component 3 to the incident surface of the second lens 7. After entering the second lens 7, it is incident on the exit surface and, after being collimated, is emitted from the exit surface of the second lens 7.

[0082] In this embodiment, the laser is first collimated using the second lens 7 to reduce the divergence angle of the laser beam; the collimated laser beam is incident on the optical path adjustment component 5 to adjust the optical path of the first color laser emitted by part of the first type light-emitting component 21, so that the second color laser finally emitted from the light-transmitting sealing component 4 is located in the middle and the first color laser is located on both sides of the second color laser, thereby improving the uniformity of the light output of the laser 100.

[0083] In some embodiments, as Figure 15As shown, along a direction perpendicular to the plane where the base plate 11 is located, the thickness H3 of the second lens 7 may satisfy: H3 ≥ 0.5 mm, and / or H3 ≤ 0.8 mm.

[0084] In some embodiments, as Figure 15 As shown, along the first direction X, the aperture length L2 of the second lens 7 satisfies: L2 ≥ 1.0 mm, and / or, L2 ≤ 2.0 mm.

[0085] The aperture length L2 of the second lens 7 determines the size of the light collected.

[0086] In some embodiments, as Figure 15 As shown, the deflection component 3 is fixedly connected to the second lens 7 .

[0087] In this embodiment, the steering component 3 and the second lens 7 can be fixedly connected by using transparent optical adhesive.

[0088] In some embodiments, as Figure 16 As shown, the deflection component 3 and the second lens 7 are integrated.

[0089] In this embodiment, the steering component 3 and the second lens 7 are made of the same material and are integrated into one body, which is beneficial to simplifying the installation process.

[0090] In some embodiments, as Figure 17 As shown, the laser 100 further includes a step 8 ; the step 8 is located between the first type of light emitting component 21 whose optical path is to be adjusted and the bottom plate 11 , and is used to compensate for the optical path difference caused by the optical path adjustment component 5 .

[0091] The optical path adjustment component 5 adjusts the optical path of the first-color laser light emitted by a portion of the first-type light-emitting components 21, thereby increasing the optical path length of the first-color laser light. The longer the optical path length, the greater the divergence angle, which affects the collimation of the first-color laser light. In this embodiment, a step 8 is provided below the first-type light-emitting component 21 whose optical path is to be adjusted, thereby reducing the distance from the first-type light-emitting component 21 to the light-transmitting sealing component 4. This shortens the optical path length of the first-color laser light from the light-transmitting sealing component 4, compensating for the optical path difference caused by the optical path adjustment component 5.

[0092] The step 8 is made of insulating material to insulate the first type light emitting assembly 21 from the base plate 11. The thickness of the step 8 in a direction Z perpendicular to the base plate 11 is substantially equal to the length of the optical path adjustment component 5 in the first direction X.

[0093] Since a step 8 is set below the first type of light-emitting component 21 whose light path is to be adjusted, the heat dissipation path of the light-emitting chip 23 is long. High thermal conductivity materials, such as diamond copper, can be added to the step 8, which has a high thermal conductivity coefficient and can achieve good heat dissipation efficiency.

[0094] In some embodiments, red, such as Figure 18 As shown, a transfer platform 9 is provided around the step 8 , and the first type of light emitting component 21 is electrically connected to the pad via the transfer platform 9 and the wire.

[0095] In particular, along a direction Z perpendicular to the base plate 11, the height of the transfer platform 9 is less than the height of the step 8. A first metal layer is provided on the side of the transfer platform 9 facing away from the base plate 11 for connection to the wire. A second metal layer is also provided on the side of the transfer platform 9 facing the base plate 11 for fixed connection to the base plate 11. With this arrangement, the base plate 11 is typically made of oxygen-free copper or ceramic material. By providing the second metal layer on the lower surface of the transfer platform 9, the second metal layer can form a more secure connection with the base plate 11, preventing the transfer platform 9 from falling off, which is beneficial for improving the stability of the laser 100. The first metal layer and the second metal layer are insulated.

[0096] The transfer platform 9 around the step 8 is in a step-like shape, and as the distance between the transfer platform 9 and the step 8 increases, the thickness of the transfer platform gradually decreases. The number of levels of the step-like transfer platform 9 is greater than or equal to 2, and / or less than or equal to 5. For example, Figure 18 As shown, the switching platform 9 has three levels.

[0097] In some embodiments, red, such as Figure 19 As shown, along the first direction X, the length L of the optical path adjustment component 5 satisfies: L1 ≥ 5 mm, and / or, L1 ≤ 8 mm.

[0098] In some embodiments, red, such as Figure 19 As shown, along the direction Z perpendicular to the plane of the bottom plate, the thickness H1 of the optical path adjusting component 5 satisfies: H1 ≥ 1.0 mm, and / or H1 ≤ 1.5 mm. For example, the thickness H1 of the optical path adjusting component 5 is equal to 1 mm.

[0099] In some embodiments, red, such as Figure 19 As shown, the angle θ between the first adjustment portion 51 and the plane where the bottom plate 11 is located (ie, the horizontal plane) is equal to 45°.

[0100] In some embodiments, red, such as Figure 20 As shown, along the direction Z perpendicular to the plane where the bottom plate is located, the thickness H2 of the step 8 satisfies: H2 ≥ 5 mm, and / or, H2 ≤ 8 mm.

[0101] 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.

[0102] 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: The tube shell comprises 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 side wall 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 emitting a first color laser, the second type of light-emitting assembly emitting a second color laser, the first type of light-emitting assembly and the second type of light-emitting assembly being arranged along a first direction, with light-emitting assemblies of the same type being adjacent to each other; a light-transmitting sealing component, located on a side of the side wall facing away from the bottom plate; The optical path adjustment component is located on the side of the transparent sealing component facing the side wall, and is used to adjust the optical path of the first color laser emitted by part of the first type light-emitting component so that the first color laser emitted from the transparent sealing component is located on both sides of the second color laser.

2. The laser according to claim 1, characterized in that The optical path adjustment component includes a first adjustment portion and a second adjustment portion, wherein the first adjustment portion and the second adjustment portion are arranged in parallel; The first adjustment unit is used to adjust the optical path of the first color laser beam incident on the first adjustment unit, so that the first color laser beam after the optical path adjustment is incident on the second adjustment unit; The second adjustment unit adjusts an optical path of the first color laser beam incident on the second adjustment unit so that the first color laser beam after the optical path adjustment is incident on the light-transmitting sealing member.

3. The laser according to claim 2, characterized in that The first adjustment portion includes a curved surface and / or a microstructured surface.

4. The laser according to claim 3, characterized in that The microstructure surface includes a Fresnel structure surface and / or a diffraction unit.

5. The laser according to any one of claims 1 to 4, characterized in that: Also includes: A first lens is located on a side of the light-transmitting sealing component away from the side wall and is used to collimate the laser emitted from the light-transmitting sealing component.

6. The laser according to claim 1, characterized in that Also includes: a steering component, located on the same side of the base plate as the light-emitting component and on the light-emitting side of the light-emitting component; a second lens, located on a side of the steering component facing away from the bottom plate; The laser light emitted from the light emitting assembly is deflected by the steering component to the incident surface of the second lens, and is collimated by the second lens before being emitted from the exit surface of the second lens.

7. The laser according to claim 6, characterized in that The steering component is fixedly connected to the second lens; and / or, The steering component is integrated with the second lens.

8. The laser according to claim 1, characterized in that The optical path adjustment component is fixedly connected to the light-transmitting sealing component. and / or, The optical path adjustment component is integrated with the light-transmitting sealing component.

9. The laser according to claim 1, characterized in that Also includes: stairs; It is located between the first type of light emitting component whose optical path is to be adjusted and the base plate, and is used to compensate for the optical path difference caused by the optical path adjustment component.

10. The laser according to claim 9, characterized in that Along the first direction, the length L1 of the optical path adjustment component satisfies: L1 ≥ 5 mm, and / or L1 ≤ 8 mm; Along a direction perpendicular to the plane where the base plate is located, the thickness H1 of the optical path adjustment component satisfies: H1 ≥ 1.0 mm, and / or H1 ≤ 1.5 mm; Along a direction perpendicular to the plane where the bottom plate is located, the thickness H2 of the step satisfies: H2 ≥ 5 mm, and / or H2 ≤ 8 mm.

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