Matrix type white laser lamp and projection device

Abstract

The utility model discloses a matrix type white laser lamp and a projection device, and relates to the technical field of laser optical shaping, the matrix type white laser lamp comprises a substrate, a plurality of white laser assemblies and a plurality of offset assemblies; the plurality of white laser assemblies are mounted on the substrate, and each white laser assembly is used for emitting a white laser beam; the multiple offset assemblies are arranged corresponding to at least part of the multiple white laser assemblies, each offset assembly is arranged at the light emitting end of the corresponding white laser assembly, and the multiple offset assemblies are used for reducing the distance between light beams emitted by at least part of the white laser assemblies; according to the technical scheme of the utility model, the plurality of white laser assemblies are installed on the substrate to carry out line integration of the plurality of white laser assemblies, and the offset assemblies are arranged corresponding to at least part of the white laser assemblies, so that the plurality of white laser beams emitted by the plurality of white laser assemblies are close to each other. Mutual interference among the multiple white laser assemblies is avoided, light integration is achieved, and the irradiation distance is long.

Description

Technical Field

[0001] The utility model relates to the technical field of laser optical shaping, in particular to a matrix type white laser lamp and a projection device. Background Art

[0002] Currently, there are two solutions for long-distance white laser light. Solution 1 uses three or more TO9-packaged excitation light sources. Through beam shaping, these three or more excitation light spots are combined into a beam. The beam is then irradiated onto a wavelength conversion board to produce a higher-power white laser. Solution 2 uses a single TO9-packaged excitation light source to directly excite the wavelength conversion board, producing a lower-power white laser.

[0003] Compared to LED light sources, white lasers offer more concentrated light energy and a smaller luminous area, but this also leads to more concentrated heat, requiring a larger heat dissipation volume. Therefore, LED light sources are easier to integrate, while white lasers require the manufacture of discrete laser chips and then integration with a wavelength conversion board. Discrete laser chips have a larger heat dissipation volume, requiring more structural design.

[0004] Therefore, how to achieve the integration of white laser lamps has become an urgent problem to be solved in this field. Utility Model Content

[0005] The main purpose of the utility model is to provide a matrix white laser lamp and a projection device, aiming to realize the integration of white laser lamps.

[0006] To achieve the above objectives, the matrix white laser lamp proposed in the present invention includes a substrate, multiple white laser components, and multiple offset components; the multiple white laser components are mounted on the substrate, each white laser component is used to emit a white laser beam; the multiple offset components are arranged corresponding to at least some of the multiple white laser components, each offset component is arranged at the light-emitting end of the corresponding white laser component, and the multiple offset components are used to reduce the spacing between the light beams emitted by at least some of the white laser components.

[0007] In one embodiment, a white laser assembly includes a heat conducting plate, a packaging shell, and a light source assembly; the heat conducting plate is attached to a substrate; the packaging shell cover is arranged on the side of the heat conducting plate facing away from the substrate to define a packaging cavity with the heat conducting plate, and an exit hole is opened on the outside of the packaging shell; the light source assembly is arranged in the packaging cavity to emit a white laser beam, and the white laser beam can be emitted from the exit hole.

[0008] In one embodiment, the light source assembly includes a laser chip and a wavelength conversion plate; the laser chip is mounted on the heat conduction plate and located in the packaging cavity for emitting laser light; the wavelength conversion plate is mounted on the exit hole for converting the laser light into white laser light.

[0009] In one embodiment, a power circuit is engraved in the substrate, the laser chip has electrodes, and multiple electrodes pass through the packaging shell and are connected to the power circuit with a common anode; and / or, the wavelength conversion plate is configured as one of transparent fluorescent glass, transparent fluorescent ceramics, and fluorescent crystal.

[0010] In one embodiment, a plurality of white laser components are dispersedly arranged on a substrate; each offset component has a first reflective surface and a second reflective surface; the first reflective surface is arranged corresponding to the light-emitting end of the corresponding white laser component; the second reflective surface and the corresponding white laser component are arranged on both sides of the normal of the corresponding first reflective surface; wherein, the plurality of second reflective surfaces in the plurality of offset components are arranged adjacent to each other so that the spacing between the plurality of white laser light beams is reduced after passing through the corresponding first reflective surface and the corresponding second reflective surface.

[0011] In one embodiment, the offset component includes a parallel flat crystal, and two opposite surfaces of the parallel flat crystal form a first reflective surface and a second reflective surface.

[0012] In one embodiment, a direction perpendicular to the propagation direction of the white laser beam is defined as a first direction. The plurality of white laser assemblies form a plurality of column groups arranged along the first direction, and at least one column group includes at least two white laser assemblies.

[0013] In one embodiment, a collimating lens is disposed between each offset assembly and the corresponding white laser assembly.

[0014] In one embodiment, a beam expander is provided on a side of each offset component facing away from the white laser component.

[0015] The present invention further provides a projection device, comprising the matrix type white laser lamp and a receiving screen as described above; the receiving screen is used to receive the white laser light emitted by the matrix type white laser lamp, and has a plurality of adjacent light spots formed thereon.

[0016] The technical solution of the present invention is to install multiple white laser components on a substrate to perform circuit integration of the multiple white laser components, and to set offset components corresponding to at least some of the white laser components, so that the multiple white laser light beams emitted by the multiple white laser components are close to each other, that is, the spacing between the light beams emitted by the white laser components is reduced, avoiding mutual interference between the multiple white laser components while achieving light integration and a long irradiation distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a schematic side view of the structure of an embodiment of a matrix white laser lamp provided by the present invention;

[0019] Figure 2 for Figure 1 A partial enlarged view of the medium white laser component;

[0020] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the matrix white laser lamp;

[0021] Figure 4 for Figure 3 Schematic diagram of the contralateral three-dimensional structure;

[0022] Figure 5 for Figure 3 A schematic diagram of the top view structure of a matrix white laser lamp;

[0023] Figure 6 A schematic diagram of the beam positions of the first embodiment of the matrix white laser lamp provided by the present invention;

[0024] Figure 7 A schematic diagram of the beam positions of the second embodiment of the matrix white laser lamp provided by the present invention;

[0025] Figure 8 This is a schematic diagram of the beam position of the third embodiment of the matrix white laser lamp provided by the present invention.

[0026] Description of Figure Numbers:

[0027] 100. Matrix white laser lamp; 1. Substrate; 2. White laser assembly; 2A. First laser assembly; 2B. Second laser assembly; 2C. Third laser assembly; 2D. Fourth laser assembly; 2E. Fifth laser assembly; 2F. Sixth laser assembly; 21. Heat conduction plate; 22. Package; 221. Exit hole; 23. Light source assembly; 231. Laser chip; 232. Wavelength conversion plate; 24. Kovar transition ring; 25. Transition heat sink; 3. Offset assembly; 3A. First parallel flat crystal; 3B. Second parallel flat crystal; 3C. Third parallel flat crystal; 3D. Fourth parallel flat crystal; 3E. Fifth parallel flat crystal; 31. First reflective surface; 32. Second reflective surface; 4. Collimator; 5. Beam expander;

[0028] 201, first light spot; 202, second light spot; 203, third light spot; 204, fourth light spot; 205, fifth light spot; 206, sixth light spot.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] like Figure 1 As shown in the figure (the arrows indicate the propagation paths of some white laser beams), the present invention proposes a matrix-type white laser lamp 100 for achieving white laser lamp integration. The matrix-type white laser lamp 100 comprises a substrate 1, multiple white laser components 2, and multiple offset components 3. The multiple white laser components 2 are mounted on the substrate 1, each configured to emit a white laser beam. The multiple offset components 3 are disposed corresponding to at least some of the multiple white laser components 2, each disposed at the light-emitting end of a corresponding white laser component 2. The multiple offset components 3 are configured to reduce the spacing between the beams emitted by at least some of the white laser components 2.

[0034] The technical solution of the present invention is to install multiple white laser components 2 on a substrate 1 to perform circuit integration of the multiple white laser components 2, and to set an offset component 3 corresponding to at least part of the white laser components 2, so that the multiple white laser light beams emitted by the multiple white laser components 2 are close to each other, that is, the spacing between the light beams emitted by the white laser components 2 is reduced, avoiding mutual interference between the multiple white laser components 2 while achieving light integration, increasing the irradiation distance and irradiation width, and can be used for searchlights and laser car lights.

[0035] It should be noted that the multiple white laser assemblies 2 can be arranged on the substrate 1 in various ways, arranging them so as to avoid interference and ensure that each has an appropriate heat dissipation volume. In one embodiment, the multiple offset assemblies 3 are provided in a one-to-one correspondence with all white laser assemblies 2, thereby refracting all white laser beams to similar positions, reducing the spacing between the multiple white laser beams. In another embodiment, the multiple offset assemblies 3 are provided in a corresponding correspondence with some white laser assemblies 2, refracting the white laser beams emitted by these white laser assemblies 2 to positions near the white laser beams emitted by other white laser assemblies 2, thereby reducing the spacing between the multiple white laser beams.

[0036] It is easy to understand that the spacing between two white laser beams is the distance between the two white laser beams when the two white laser beams are parallel to each other.

[0037] Currently, there are two common solutions for white laser assembly 2. Solution 1 uses three or more TO9-packaged excitation light sources, combines the three or more excitation light spots through beam shaping, and then excites and irradiates the wavelength conversion plate 232 to output higher-power white laser light. Solution 2 directly uses a single TO9-packaged excitation light source to directly excite the wavelength conversion plate 232, outputting lower-power white laser light. Both of these solutions use packaged blue lasers and lack chip-level packaging design, resulting in larger sizes and unfavorable integration and heat dissipation.

[0038] Based on this, see Figure 2 In one embodiment of the present invention, white laser assembly 2 includes a heat conducting plate 21, an encapsulation shell 22, and a light source assembly 23. Heat conducting plate 21 is attached to substrate 1. Encapsulation shell 22 is positioned over the side of heat conducting plate 21 facing away from substrate 1, defining a package cavity with heat conducting plate 21. Encapsulation shell 22 defines an exit hole 221 on its exterior. Light source assembly 23 is disposed within the package cavity to emit a white laser beam, which can be emitted through exit hole 221. This arrangement, in which light source assembly 23 is disposed within the package cavity, eliminates the TO9 package format, reducing thermal resistance, and adopts a surface-mount connection method to achieve chip-level packaging of white laser assembly 2, facilitating integration and enhancing practicality.

[0039] Furthermore, the packaging shell 22 is made of ceramic material, and the heat conducting plate 21 is made of copper and is fixed on the substrate 1 by soldering, which facilitates heat dissipation and circuit integration.

[0040] In one embodiment of the present invention, the light source assembly 23 includes a laser chip 231 and a wavelength conversion plate 232. The laser chip 231 is mounted on the heat conducting plate 21 within the package cavity and is used to emit laser light. The wavelength conversion plate 232 is mounted on the exit hole 221 and is used to convert the laser light into white laser light. With this arrangement, the blue laser light emitted by the laser chip 231 is converted into white laser light after passing through the optical conversion medium. The white laser light is then emitted from the exit hole 221.

[0041] Specifically, a transition heat sink 25 is provided on the heat conducting plate 21 , and the laser chip 231 is mounted on the transition heat sink 25 , thereby reducing stress caused by thermal expansion coefficient mismatch and quickly and effectively transferring heat generated by the laser chip 231 to the heat conducting plate 21 .

[0042] Specifically, a Kovar transition ring 24 is provided at the connection between the heat conducting plate 21 and the packaging cavity, thereby reducing stress caused by mismatch of thermal expansion coefficients and achieving good sealing.

[0043] In an embodiment of the present invention, the wavelength conversion plate 232 is configured to be one of transparent fluorescent glass, transparent fluorescent ceramics, and fluorescent crystals.

[0044] In one embodiment of the present invention, a power supply circuit is engraved in the substrate 1, and the laser chip 231 has electrodes. Multiple electrodes pass through the packaging shell 22 and are connected to the common anode of the power supply circuit. With this arrangement, each white laser component 2 can be individually controlled and can be switched on and off alternately, thereby adjusting the overall intensity or the intensity along a certain direction of the white laser emitted from the matrix white laser lamp 100.

[0045] In one embodiment of the present invention, please refer to Figure 1 and Figure 3 Multiple white laser assemblies 2 are dispersedly arranged on a substrate 1. Each offset assembly 3 has a first reflective surface 31 and a second reflective surface 32. The first reflective surface 31 corresponds to the light-emitting end of the corresponding white laser assembly 2. The second reflective surface 32 is located on either side of the normal of the corresponding white laser assembly 2. The multiple second reflective surfaces 32 in the multiple offset assemblies 3 are arranged adjacent to each other, so that the spacing between the multiple white laser beams is reduced after passing through the corresponding first reflective surface 31 and the corresponding second reflective surface 32. With this arrangement, refraction by the two reflective surfaces offsets the white laser beams, thereby reducing the spacing between the white laser beams, preventing interference between the multiple white laser assemblies 2 while achieving light integration.

[0046] Furthermore, in one embodiment of the present invention, the offset assembly 3 includes a parallel flat crystal, whose opposing surfaces form a first reflective surface 31 and a second reflective surface 32. The two surfaces of the parallel flat crystal are very flat and highly parallel to each other, with deviations controlled to submicron levels. Using the parallel flat crystal to form the mutually parallel first and second reflective surfaces 31 and 32 allows for accurate offset of the white laser beam.

[0047] In one embodiment of the present invention, a first direction perpendicular to the propagation direction of the white laser beam is defined as the first direction. Multiple white laser assemblies 2 form multiple columns arranged along the first direction, with at least one column comprising at least two white laser assemblies 2. This arrangement allows multiple white laser beams to be arranged in at least two directions perpendicular to the propagation direction, thereby increasing the intensity and width of the illumination.

[0048] Specifically, in the first embodiment of the present invention, please refer to Figure 3-Figure 6 The plurality of white laser components 2 include a first column group and a second column group.

[0049] The second direction is perpendicular to the propagation direction of the white laser beam and perpendicular to the first direction; the first column group includes a first laser assembly 2A, a second laser assembly 2B, and a third laser assembly 2C arranged in sequence along the second direction. The first laser assembly 2A and the third laser assembly 2C are respectively provided with a first parallel flat crystal 3A and a second parallel flat crystal 3B. The first parallel flat crystal 3A and the second parallel flat crystal 3B both extend in the second direction toward the second laser assembly 2B, so that the white laser beams emitted by the first laser assembly 2A and the third laser assembly 2C are closely arranged with the white laser beam emitted by the second laser assembly 2B along the second direction. If a matrix white laser lamp 100 is used for projection, the following is formed: Figure 6 The first light spot 201, the second light spot 202, and the third light spot 203 are shown.

[0050] The second column group includes a fourth laser assembly 2D and a fifth laser assembly 2E arranged in sequence along the second direction. The fourth laser assembly 2D and the fifth laser assembly 2E are staggered with the laser assembly of the first column group. The fourth laser assembly 2D and the fifth laser assembly 2E are respectively provided with a third parallel flat crystal 3C and a fourth parallel flat crystal 3D. The third parallel flat crystal 3C is closely arranged with the first parallel flat crystal 3A and has a second reflecting surface 32 parallel to the first parallel flat crystal 3A. The fourth parallel flat crystal 3D is closely arranged with the second parallel flat crystal 3B and has a second reflecting surface 32 parallel to the second parallel flat crystal 3B. Thus, the following is formed: Figure 6 The fourth light spot 204 and the fifth light spot 205 are shown.

[0051] Specifically, the lengths of the third parallel flat crystal 3C and the fourth parallel flat crystal 3D are longer than the lengths of the first parallel flat crystal 3A and the second parallel flat crystal 3B, so that the fourth laser assembly 2D and the fifth laser assembly 2E will not interfere with the first laser assembly 2A and the third laser assembly 2C.

[0052] Furthermore, the second column group also includes a sixth laser assembly 2F, which is spaced apart from the second laser assembly 2B along the first direction and correspondingly provided with a fifth parallel flat crystal 3E, which extends along the first direction so that the white laser beam emitted by the sixth laser assembly 2F is closely aligned with the white laser beams emitted by the fourth laser assembly 2D and the fifth laser assembly 2E along the first direction. Specifically, the sixth laser assembly 2F is placed at a position where the first laser assembly 2A is rotated 90 degrees clockwise around the second laser assembly 2B. This forms the following: Figure 6 The sixth light spot 206 is shown.

[0053] It should be noted that the number of column groups can be selected according to different requirements, and can also be set to one column, thereby only increasing the width of the outgoing light beam in the second direction.

[0054] In the second embodiment of the present invention, please refer to Figure 7 , the number of column groups is set to one column, and the rest of the structure follows the content of the first embodiment. For the same structure names, reference can be made to some contents of the first embodiment, and the following embodiments will not repeat them.

[0055] Specifically, the difference between the second embodiment and the first embodiment is that the multiple white laser assemblies 2 only form a first column group, and the multiple white laser assemblies 2 include a first laser assembly 2A, a second laser assembly 2B, and a third laser assembly 2C arranged in sequence along the second direction. The first laser assembly 2A and the third laser assembly 2C are respectively provided with a first parallel flat crystal 3A and a second parallel flat crystal 3B. The first parallel flat crystal 3A and the second parallel flat crystal 3B both extend in the second direction toward the second laser assembly 2B, so that the white laser beams emitted by the first laser assembly 2A and the third laser assembly 2C are closely arranged with the white laser beam emitted by the second laser assembly 2B along the second direction, thereby increasing the width of the emitted beams in the first direction. If a matrix white laser lamp 100 is used for projection, the following is formed: Figure 7 The first light spot 201, the second light spot 202, and the third light spot 203 are shown.

[0056] Moreover, in a matrix-type white laser lamp 100 , the number of white laser components 2 in each column group can be different, thereby adapting to different application requirements and saving costs.

[0057] In the third embodiment of the present invention, please refer to Figure 8The number of column groups is set to two, and the number of white laser components 2 in the two columns is different. The rest of the structure follows the content of the second embodiment. For the same structural names, please refer to some contents of the second embodiment, and the following embodiments will not repeat them.

[0058] Specifically, the third embodiment differs from the second embodiment in that: based on the second embodiment, the third embodiment has a second column group, which includes a fourth laser assembly 2D and a fifth laser assembly 2E arranged in sequence along the second direction. The fourth laser assembly 2D and the fifth laser assembly 2E are staggered with the laser assemblies of the first column group. The fourth laser assembly 2D and the fifth laser assembly 2E are respectively provided with a third parallel flat crystal 3C and a fourth parallel flat crystal 3D. The third parallel flat crystal 3C is arranged closely to the first parallel flat crystal 3A and has a second reflective surface 32 parallel to the first parallel flat crystal 3A. The fourth parallel flat crystal 3D is arranged closely to the second parallel flat crystal 3B and has a second reflective surface 32 parallel to the second parallel flat crystal 3B. If a matrix white laser lamp 100 is used for projection, the following is formed: Figure 8 The first light spot 201 , the second light spot 202 , the third light spot 203 , the fourth light spot 204 , and the fifth light spot 205 are shown.

[0059] In one embodiment of the present invention, please refer to Figure 1 A collimator lens 4 is provided between each offset assembly 3 and the corresponding white laser assembly 2. The collimator lens 4 is used to collimate the white laser beam, thereby reducing laser diffusion and increasing the irradiation distance.

[0060] Furthermore, a collimating lens 4 is also provided at the light-emitting end of the white laser component 2 where no corresponding offset component 3 is provided.

[0061] In one embodiment of the present invention, please refer to Figure 1 Each offset assembly 3 is provided with a beam expander 5 on the side facing away from the white laser assembly 2. By properly adjusting the parameters of the beam expander 5, it can meet the application of automobile lights and also meet the application of longer-distance laser searchlighting.

[0062] Furthermore, a beam expander 5 is commonly provided on a side of the multiple offset components 3 facing away from the white laser component 2 .

[0063] This utility model also provides a projection device comprising a matrix white laser lamp 100 and a receiving screen. The specific structure of the matrix white laser is similar to that of the aforementioned embodiments. Since the projection device utilizes all the technical solutions of all of the aforementioned embodiments, it possesses at least all the beneficial effects of the technical solutions of the aforementioned embodiments, and therefore will not be described in detail here. The receiving screen is used to receive the white laser light emitted by the matrix white laser lamp 100, and a plurality of adjacent light spots are formed on the receiving screen.

[0064] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A matrix white laser lamp, characterized in that: include: substrate; A plurality of white laser components are mounted on the substrate, each of the white laser components is used to emit a white laser beam; as well as, Multiple offset components are arranged corresponding to at least some of the multiple white laser components. Each offset component is arranged at the light output end of the corresponding white laser component. The multiple offset components are used to reduce the distance between the light beams emitted by at least some of the white laser components.

2. The matrix white laser lamp according to claim 1, wherein: The white laser assembly comprises: A heat conducting plate is attached to the substrate; A packaging shell is provided on a side of the heat conducting plate facing away from the substrate to define a packaging cavity with the heat conducting plate, and an exit hole is provided on the outside of the packaging shell; and The light source component is arranged in the packaging cavity and is used for emitting a white laser beam, and the white laser beam can be emitted from the emission hole.

3. The matrix white laser lamp according to claim 2, wherein: The light source assembly comprises: a laser chip, mounted on the heat conducting plate and located in the packaging cavity, for emitting laser light; and The wavelength conversion plate is installed at the emission hole and is used to convert the laser into white laser.

4. The matrix white laser lamp according to claim 3, wherein: A power circuit is engraved in the substrate, the laser chip has electrodes, and a plurality of the electrodes pass through the package shell and are connected to a common anode of the power circuit; and / or, The wavelength conversion plate is configured to be one of transparent fluorescent glass, transparent fluorescent ceramics, and fluorescent crystal.

5. The matrix white laser lamp according to claim 1, wherein: The plurality of white laser components are dispersedly disposed on the substrate; Each of the offset assemblies has: A first reflecting surface, the first reflecting surface being arranged corresponding to the light emitting end of the white laser component; and A second reflecting surface, and the corresponding white laser assembly, are disposed on both sides of a normal line corresponding to the first reflecting surface; The plurality of second reflective surfaces in the plurality of offset assemblies are arranged adjacent to each other, so that the spacing between the plurality of white laser beams is reduced after passing through the corresponding first reflective surface and the corresponding second reflective surface.

6. The matrix white laser lamp according to claim 5, wherein: The offset component includes a parallel flat crystal, and two opposite surfaces of the parallel flat crystal form the first reflecting surface and the second reflecting surface.

7. The matrix white laser lamp according to claim 1, wherein: Taking a direction perpendicular to the propagation direction of the white laser beam as a first direction, the plurality of white laser assemblies form a plurality of column groups arranged along the first direction, and at least one column group includes at least two white laser assemblies.

8. The matrix white laser lamp according to claim 1, wherein: A collimating mirror is provided between each offset component and the corresponding white laser component.

9. The matrix white laser lamp according to claim 1, wherein: A beam expander is provided on the side of each offset assembly facing away from the white laser assembly.

10. A projection device, characterized in that: include: The matrix white laser lamp according to any one of claims 1 to 9; as well as, The receiving screen is used to receive the white laser light emitted by the matrix type white laser lamp, and has a plurality of adjacent light spots formed thereon.

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