Laser light source device and projection equipment

Abstract

The invention discloses a laser light source device and projection equipment, the laser light source device comprises a first laser, a second laser and an optical mirror assembly, the optical mirror assembly comprises a first reflector group and a second reflector group, and the number and size of lamp beads on the second laser are larger than those of lamp beads on the first laser; the light emitting direction of the first laser is parallel to the first direction, and the first laser directly faces the first reflector group so as to reflect light emitted by the first laser towards the main axis direction; the light emitting direction of the second laser is parallel to the main axis direction, and the second laser directly faces the second reflector group so as to reflect the light emitted by the second laser towards the main axis direction; wherein the first direction is perpendicular to the main axis direction, and light rays reflected by the first reflecting mirror group towards the main axis direction and light rays reflected by the second reflecting mirror group towards the main axis direction are staggered in the main axis direction. According to the invention, by cooperating with the ingenious light path design, the effects of brightness, compactness and high contrast are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of projection equipment, and in particular to a laser light source device and projection equipment. Background Art

[0002] With the development of projection technology, projectors are widely used in home, education, office and other fields. The light sources of projectors can be roughly divided into laser light sources and LED light sources. Laser light sources are more widely used due to their advantages in brightness, lifespan and color gamut. However, due to the coherence of lasers, a large number of decoherence devices and optical path spaces are often required in the optical machine, making it impossible to achieve a compact design of the optical machine. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a laser light source device and a projection device, which, with a clever optical path design, achieve the effects of brightness, compactness and high contrast.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention discloses a laser light source device, comprising a first laser, a second laser and an optical mirror assembly, wherein the optical mirror assembly comprises a first reflector group and a second reflector group, the number and size of lamp beads on the second laser are both larger than those on the first laser; the light emission direction of the first laser is parallel to the first direction, and the first laser is directly facing the first reflector group to reflect the light emitted by the first laser toward the main axis direction; the light emission direction of the second laser is parallel to the main axis direction, and the second laser is directly facing the second reflector group to reflect the light emitted by the second laser toward the main axis direction; wherein the first direction is perpendicular to the main axis direction, and the light reflected by the first reflector group toward the main axis direction and the light reflected by the second reflector group toward the main axis direction are offset from each other in the main axis direction.

[0006] Preferably, the first laser includes two rows of first lamp beads of different colors, the first reflector group includes two first dichroic mirrors, each row of the first lamp beads faces one of the first dichroic mirrors in the first direction, wherein each row of the first lamp beads is arranged along the main axis direction, and each of the first dichroic mirrors is arranged at intervals along the main axis direction.

[0007] Preferably, at least one row of the first lamp beads in the first laser includes lamp beads of two different colors.

[0008] Preferably, the number of the first lasers and the number of the first reflector groups are both two, each of the first lasers is opposite to a first reflector group in the first direction, the light emission directions of the two first lasers are opposite, and the two first lasers are staggered in the first direction, the first reflector groups corresponding to the two first lasers are arranged at intervals in the second direction, and the second directions are respectively perpendicular to the first direction and the main axis direction.

[0009] Preferably, the second laser includes multiple rows of second lamp beads, the second reflector group includes second dichroic mirrors and polarizing mirrors, each of the second dichroic mirrors and the polarizing mirrors is respectively opposite to a row of second lamp beads in the direction of the principal axis, each row of the second lamp beads is arranged along the first direction, and each of the second dichroic mirrors and the polarizing mirrors are arranged at intervals in the first direction; the second dichroic mirror is used to reflect the light emitted by the corresponding second lamp bead to the polarizing mirror, and the polarizing mirror is used to pass through the corresponding second lamp bead and reflect the light from each second dichroic mirror along the principal axis direction, and the second direction is perpendicular to the first direction and the principal axis direction in pairs.

[0010] Preferably, the second laser includes a row of the second lamp beads for emitting green light, a row of the second lamp beads for emitting blue light, and two rows of the second lamp beads for emitting red light, and the optical lens assembly also includes a half-wave plate, wherein the light-emitting side of one row of the second lamp beads for emitting red light is provided with the half-wave plate, and one row of the second lamp beads for emitting red light is directly opposite to the polarizing reflector.

[0011] Preferably, the first laser includes two rows of first lamp beads of different colors, the length of each row of the second lamp beads in the second laser is greater than the length of each row of the first lamp beads in the first laser, and the lengths of the second dichroic mirror and the polarizing reflector are both greater than the length of the first reflector group.

[0012] Preferably, the length of each row of the second lamp beads in the second laser is greater than or equal to twice the length of each row of the first lamp beads in the first laser, and the lengths of the second dichroic mirror and the polarizing reflector are both greater than or equal to twice the length of the first reflector group.

[0013] Preferably, the first laser includes at least one row of first lamp beads for emitting green light, the second laser includes at least one row of second lamp beads for emitting green light, and the optical lens assembly further includes a diffuser, which is arranged on the light-emitting sides of the first lamp beads and the second lamp beads for emitting green light.

[0014] In a second aspect, the present invention discloses a projection device, comprising the laser light source device described in the first aspect and a solid diffuser, a dynamic diffuser, a first fly-eye lens, a first relay mirror, a cemented lens, a second relay mirror, a second fly-eye lens, a third relay mirror, a fourth relay mirror, a prism, a DMD chip and a projection lens arranged in sequence along the light output path of the laser light source device, wherein the optical mirror assembly is arranged directly opposite to the solid diffuser.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: in the laser light source device and projection equipment disclosed in the present invention, the second laser with a larger number of lamp beads and a larger size is arranged opposite to the main axis, while the first laser with a smaller number of lamp beads and a smaller size is perpendicular to the main axis, and the light reflected by the first laser and the second laser in the direction of the main axis is offset from each other in the direction of the main axis, thereby reducing the complexity of the optical path and avoiding the light beam from the second laser with a larger number of lamp beads and a larger size being weakened due to passing through too many mirrors; by using the first laser and the second laser in combination, the overall brightness of the laser light source device can be enhanced, which helps to improve the contrast, and because they are arranged perpendicularly to each other, the compactness of the laser light source device can be maximized.

[0016] In a further solution, the number of first lasers is two, and the two first lasers are staggered, so that the size of the two first lasers with smaller number and size of lamp beads set by the optical machine can be reduced in the first direction; and the two first lasers are arranged at intervals in the second direction, and this part of the interval space can be fully utilized to vertically place the second laser with larger number and size of lamp beads, thereby achieving greater brightness without increasing the overall volume of the laser light source device too much. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a laser light source device disclosed in Embodiment 1 of the present invention;

[0018] Figure 2 yes Figure 1 A side view of the laser light source device;

[0019] Figure 3 is a schematic diagram of the arrangement of first lamp beads of the first laser in some embodiments;

[0020] Figure 4 It is a schematic diagram of the optical path of the projection device disclosed in the second embodiment of the present invention.

[0021] Description of Figure Numbers:

[0022] 100. Laser light source device;

[0023] 10, the first laser; 10A, the first A laser; 10B, the first B laser; 11, the first lamp bead; 11A, the first A lamp bead; 11B, the first B lamp bead; 11C, the first C lamp bead; 11D, the first D lamp bead; 11D1, the first D1 lamp bead; 11D2, the first D2 lamp bead;

[0024] 20, second laser; 21, second lamp bead; 21A, second A lamp bead; 21B, second B lamp bead; 21C, second C lamp bead; 21D, second D lamp bead;

[0025] 31, a first dichroic mirror; 31A, a first A dichroic mirror; 31B, a first B dichroic mirror; 31C, a first C dichroic mirror; 31D, a first D dichroic mirror;

[0026] 32, second dichroic mirror; 32A, second A dichroic mirror; 32B, second B dichroic mirror; 32C, second C dichroic mirror;

[0027] 33. Polarizing reflector; 34. Half-wave plate; 35. Diffuser;

[0028] 40. Spindle;

[0029] 201, solid diffuser; 202, dynamic diffuser; 301, first fly-eye lens; 302, second fly-eye lens; 401, first relay lens; 402, second relay lens; 403, third relay lens; 404, fourth relay lens; 500, cemented lens; 600, aperture; 700, prism; 800, DMD chip; 900, projection lens. DETAILED DESCRIPTION

[0030] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope and application of the present invention.

[0031] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit / signal communication.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] like Figure 1 and Figure 2 As shown, the first embodiment of the present invention discloses a laser light source device 100, including a first laser 10, a second laser 20 and an optical mirror assembly, wherein the optical mirror assembly includes a first reflector group and a second reflector group. The first laser 10 is a small laser, and the second laser 20 is a large laser. The number and size of the lamp beads on the second laser 20 are larger than those on the first laser 10. The light emission direction of the first laser 10 is parallel to the first direction, and the first laser 10 is directly opposite to the first reflector group to reflect the light emitted by the first laser 10 toward the main axis direction. The main axis direction is parallel to the Z axis and the main axis 40 of the laser light source device 100, and the first direction is parallel to the X axis. The light emission direction of the second laser 20 is parallel to the main axis direction, and the second laser 20 is directly opposite to the second reflector group to converge the light emitted by each lamp bead in the second laser 20 and reflect it toward the main axis direction. The first direction is perpendicular to the main axis direction, and the light reflected by the first reflector group toward the main axis direction and the light reflected by the second reflector group toward the main axis direction are mutually offset in the main axis direction, that is, the light from the two is separated in the main axis direction.

[0035] In some embodiments, the first laser 10 includes two rows of first lamp beads 11 with different colors, the first reflector group includes two first dichroic mirrors 31, each row of first lamp beads 11 faces a first dichroic mirror 31 in the first direction, wherein each row of first lamp beads 11 is arranged along the main axis direction, and correspondingly, each first dichroic mirror 31 in the same first reflector group is arranged at intervals along the main axis direction.

[0036] In a further embodiment, the number of the first lasers 10 and the number of the first reflector groups are both two, each first laser 10 is opposite to a first reflector group in the first direction, the emission directions of the two first lasers 10 are opposite but parallel to the first direction, and the two first lasers 10 are staggered in the first direction, that is, the projections of the two in the first direction do not overlap. The first reflector groups corresponding to the two first lasers 10 are arranged at intervals in the second direction, the second direction is parallel to the Y axis, and the second direction is perpendicular to the first direction and the main axis direction in pairs; in this way, the space in the first direction can be fully utilized, so that the size of the laser light source device 100 in the first direction can be reduced.

[0037] Combination Figure 1 and Figure 2 In this specific embodiment, the two first lasers 10 are respectively a first A laser 10A and a first B laser 10B, and the light emission directions of the first A laser 10A and the first B laser 10B are parallel to the X-axis, but in opposite directions, and are complementary and staggered, that is, the two are staggered and not facing each other in the X-axis direction. The first A laser 10A includes two rows of first lamp beads 11, namely, first A lamp beads 11A for emitting red light and first B lamp beads 11B for emitting green light and / or blue light; the first B laser 10B includes two rows of first lamp beads 11, namely, first C lamp beads 11C for emitting red light and first D lamp beads 11D for emitting green light and / or blue light; each row of first lamp beads 11 on each first laser 10 is arranged along the main axis (Z axis) direction, and the light emitting direction of each row of first lamp beads 11 is directly opposite to a first dichroic mirror 31, and each first dichroic mirror 31 is used to reflect the light emitted by the corresponding first lamp beads 11 toward the main axis direction to the diffuser 35.

[0038] Specifically, the light-emitting side of the first A lamp bead 11A faces the first A dichroic mirror 31A, which reflects red light and transmits green light and / or blue light; the light-emitting side of the first B lamp bead 11B faces the first B dichroic mirror 31B, which reflects green light and / or blue light; the light-emitting side of the first C lamp bead 11C faces the first C dichroic mirror 31C, which reflects red light and transmits green light and / or blue light; the light-emitting side of the first D lamp bead 11D faces the first D dichroic mirror 31D, which reflects green light and / or blue light. The first A lamp bead 11A for emitting red light and the first C lamp bead 11C for emitting red light are provided with at least three wavelengths of red light lamp beads, for example, at least red light lamp beads with wavelengths of 638nm, 640nm, and 642nm, which can help reduce the coherence of red light and weaken the color spot phenomenon.

[0039] In this embodiment, the first A dichroic mirror 31A, the first B dichroic mirror 31B, the first C dichroic mirror 31C, and the first D dichroic mirror 31D are all located on one side of the main axis 40 close to the first A laser 10A, and the first A dichroic mirror 31A and the first B dichroic mirror 31B facing the first A laser 10A and the first C dichroic mirror 31C and the first D dichroic mirror 31D facing the first B laser 10B are arranged in the Y-axis direction.

[0040] In some embodiments, the second laser 20 includes multiple rows of second lamp beads 21, and the second reflector group includes a second dichroic mirror 32 and a polarizing reflector 33. Each second dichroic mirror 32 and the polarizing reflector 33 correspond to each row of second lamp beads 21 in the main axis direction, and each row of second lamp beads 21 is arranged along the first direction. Correspondingly, each second dichroic mirror 32 and the polarizing reflector 33 are arranged at intervals in the first direction, and the polarizing reflector 33 and the first reflector group are distributed on opposite sides of the main axis 40 in the first direction; the second dichroic mirror 32 is used to reflect the light emitted by the corresponding second lamp bead 21 to the polarizing reflector 33, and the polarizing reflector 33 is used to pass the light of the second lamp bead 21 corresponding to it in the main axis direction, and reflect the light from each second dichroic mirror 32 along the main axis direction, and the second direction is perpendicular to the first direction and the main axis direction.

[0041] In a further embodiment, the second laser 20 includes a row of second lamp beads 21 for emitting green light, a row of second lamp beads 21 for emitting blue light, and two rows of second lamp beads 21 for emitting red light. The optical lens assembly further includes a half-wave plate 34, wherein a half-wave plate 34 is provided on the light-emitting side of a row of second lamp beads 21 for emitting red light, and a row of second lamp beads 21 for emitting red light is directly opposite to the polarizing reflector 33. The polarization directions of the red light emitted by the two second lamp beads 21 for emitting red light are the same, and the half-wave plate 34 is used to adjust the polarization direction of the transmitted red light to a direction perpendicular to the original polarization direction. The polarizing reflector 33 is used to transmit light with a certain polarization direction and reflect light with a polarization direction perpendicular thereto, so the polarizing reflector 33 can transmit the red light of the second lamp beads 21 corresponding to the main axis direction and reflect the red light of the other row of second lamp beads 21 from the second dichroic mirror 32.

[0042] In a further embodiment, the length of each row of second lamp beads 21 in the second laser 20 is greater than the length of each row of first lamp beads 11 in the first laser 10, and the lengths of the second dichroic mirror 32 and the polarizing mirror 33 are both greater than the length of the first dichroic mirror 31 to match the light emitting range of each second lamp bead 21. Further, the length of each row of second lamp beads 21 in the second laser 20 is greater than or equal to twice the length of each row of first lamp beads 11 in the first laser 10, and the lengths of the second dichroic mirror 32 and the polarizing mirror 33 are both greater than or equal to twice the length of the first dichroic mirror 31. In the optical path cross section perpendicular to the main axis 40, the light from the first dichroic mirror 31 and the light from the polarizing mirror 33 are arranged in the first direction, and the beam area of ​​the light from the polarizing mirror 33 is greater than or equal to the beam area of ​​the light from the first dichroic mirror 31.

[0043] Combination Figure 1 and Figure 2In this specific embodiment, the light emission direction of the second laser 20 is parallel to the Z axis, and 4 rows of second lamp beads 21 are arranged thereon, and the size and number of the second lamp beads 21 are larger than the first lamp beads 11 on the first laser 10; the orientation distribution of such a large laser (the second laser 20) and a small laser (the first laser 10) can improve the utilization rate of space. The second laser 20 includes a row of second A lamp beads 21A for emitting green light, a row of second B lamp beads 21B for emitting blue light, and a row of second C lamp beads 21C and a row of second D lamp beads 21D for emitting red light, and a row of second A lamp beads 21A, a row of second B lamp beads 21B, a row of second C lamp beads 21C, and a row of second D lamp beads 21D are arranged in sequence along the X axis direction. Among them, the light-emitting side of the second A lamp bead 21A faces the second A dichroic mirror 32A, and the second A dichroic mirror 32A can reflect green light, and it reflects the light from the second A lamp bead 21A to the second B dichroic mirror 32B; the light-emitting side of the second B lamp bead 21B faces the second B dichroic mirror 32B, and the second B dichroic mirror 32B can reflect blue light and transmit green light, and it reflects the light from the second B lamp bead 21B to the second C dichroic mirror 32C; the light-emitting side of the second C lamp bead 21C faces the half-wave plate 34 and the second C dichroic mirror 32C, the half-wave plate 34 is used to change the polarization state of the red light passing through, and the second C dichroic mirror 32C can reflect red light and transmit The light-emitting side of the second D lamp bead 21D faces the polarizing mirror 33, and the polarization direction of the light beam from the second A dichroic mirror 32A, the second B dichroic mirror 32B, and the second C dichroic mirror 32C is perpendicular to the polarization direction of the light beam of the second D lamp bead 21D. The polarizing mirror 33 can transmit light of a certain polarization direction and reflect light perpendicular to the polarization direction. Therefore, in this specific embodiment, the polarizing mirror 33 is used to transmit the light of the second D lamp bead 21D used to emit red light, and reflect the light perpendicular to the polarization direction of the second D lamp bead 21D from the second A lamp bead 21A, the second B lamp bead 21B, and the second C lamp bead 21C. In this way, the polarization states of the two beams of red light coming out of the polarizing mirror 33 are perpendicular to each other, so that the overall coherence of the red light can be further reduced on the basis of maintaining high brightness.

[0044] In this embodiment, the polarizing mirror 33 is located below the main axis 40, so that the light from the polarizing mirror 33 can pass from below the main axis 40 without passing through the first dichroic mirrors 31 above, thereby reducing the complexity of the optical path and avoiding the light beam from the large laser (second laser 20) from being weakened due to passing through too many mirrors.

[0045] In a further implementation, the optical lens assembly further includes a diffuser, and diffusers are added to the light-emitting sides of the first D lamp bead 11D for emitting green light in the first B laser 10B and a row of second A lamp beads 21A for emitting green light in the second laser 20 to reduce the coherence of the emitted green light.

[0046] In addition, in some embodiments, at least one row of first lamp beads 11 in the first laser 10 includes lamp beads of two different colors. Figure 3 As shown, the first row and the second row of the first B laser 10B have 5 first lamp beads 11 respectively, the first row is 5 first C lamp beads 11C for emitting red light, and the second row can be 3 first D1 lamp beads 11D1 for emitting green light and 2 first D2 lamp beads 11D2 for emitting blue light; correspondingly, in the two rows of lamp beads in the first A laser 10A, the first row is all first A lamp beads 11A for emitting red light, and the second row is all first B lamp beads 11B for emitting blue light. By setting multiple colors in one row of at least one of the two first lasers 10, the color component proportion of the total light beam finally converged can be adjusted, which can provide more and reasonable proportions of green light and blue light, and improve the color gamut and contrast; otherwise, if the entire light source is of the same color, it is impossible to achieve good color gamut adjustment.

[0047] In summary, the laser light source device 100 disclosed in the first embodiment of the present invention, first, the two first lasers 10 are staggered, so that the size of the two small lasers (the first A laser 10A and the first B laser 10B) arranged by the optical machine in the X-axis direction can be reduced; second, the large laser (the second laser 20) is arranged opposite to the main axis 40, and the two small lasers (the first A laser 10A and the first B laser 10B) are perpendicular to the main axis 40, wherein the two small lasers (the first A laser 10A and the first B laser 10B) have a large spacing in the Y-axis direction, and this spacing can be fully utilized to vertically place a large laser (the second laser 20), while achieving greater brightness without excessively increasing the overall volume of the laser light source device 100; third, the introduction of the large laser (the second laser 20) can increase the overall brightness of the laser light source device 100, and has a richer number of lamp beads and color ratio options, which helps to improve the contrast. Fourth, through the different optical paths of the two small lasers (the first A laser 10A and the first B laser 10B) and the large laser (the second laser 20), a phase difference is generated to reduce the laser coherence and the speckle fringes.

[0048] like Figure 4As shown, the second embodiment of the present invention discloses a projection device, including the laser light source device 100 in the first embodiment and a solid diffuser 201, a dynamic diffuser 202, a first fly-eye lens 301, a first relay lens 401, a cemented lens 500, a second relay lens 402, a second fly-eye lens 302, an aperture 600, a third relay lens 403, a fourth relay lens 404, a prism 700, and a DMD chip 800 arranged in sequence along the light output path of the laser light source device, and finally projected after being magnified by a projection lens 900, wherein the optical mirror assembly is arranged opposite to the solid diffuser 300.

[0049] Among them, the solid diffuser 200 and the dynamic diffuser 300 are used to eliminate the coherence of the laser; the first fly-eye lens 301 and the second fly-eye lens 302 are used to disperse the light beam and reduce the coherence; the first relay lens 401, the second relay lens 402, the third relay lens 403 and the fourth relay lens 404 are converging lenses for collimating the light beam; the cemented lens 500 is made of quartz material and is used to disrupt the polarization state of the light beam and further reduce the coherence; the aperture 600 is used to modulate the contrast of the light beam.

[0050] The background section of the present invention may contain background information about the problem or environment of the present invention, rather than describing the prior art by others. Therefore, the content contained in the background section is not an admission by the applicant that the prior art is available.

[0051] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description of reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of mutual contradiction, the technical personnel in this field can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope defined by the attached claims.

Claims

1. A laser light source device, characterized in that: It comprises a first laser, a second laser and an optical mirror assembly, wherein the optical mirror assembly comprises a first reflector group and a second reflector group, and the number and size of the lamp beads on the second laser are greater than those on the first laser; The light emission direction of the first laser is parallel to the first direction, and the first laser is directly facing the first reflector group to reflect the light emitted by the first laser toward the main axis direction; The light emission direction of the second laser is parallel to the main axis direction, and the second laser is directly facing the second reflector group to reflect the light emitted by the second laser toward the main axis direction; The first direction is perpendicular to the main axis direction, and the light reflected by the first reflector group toward the main axis direction and the light reflected by the second reflector group toward the main axis direction are offset from each other in the main axis direction.

2. The laser light source device according to claim 1, characterized in that: The first laser includes two rows of first lamp beads of different colors, the first reflector group includes two first dichroic mirrors, each row of the first lamp beads faces one of the first dichroic mirrors in the first direction, wherein the first lamp beads in each row are arranged along the main axis direction, and the first dichroic mirrors are arranged at intervals along the main axis direction.

3. The laser light source device according to claim 2, characterized in that: At least one row of the first lamp beads in the first laser includes lamp beads of two different colors.

4. The laser light source device according to claim 1, characterized in that: The number of the first lasers and the first reflector groups are both two, each of the first lasers is opposite to a first reflector group in the first direction, the light emission directions of the two first lasers are opposite, and the two first lasers are staggered in the first direction, the first reflector groups corresponding to the two first lasers are arranged at intervals in the second direction, and the second directions are perpendicular to the first direction and the main axis direction in pairs.

5. The laser light source device according to claim 1, characterized in that: The second laser includes multiple rows of second lamp beads, the second reflector group includes second dichroic mirrors and polarizing reflectors, each of the second dichroic mirrors and the polarizing reflectors are respectively opposite to a row of the second lamp beads in the direction of the principal axis, each row of the second lamp beads is arranged along the first direction, and each of the second dichroic mirrors and the polarizing reflectors are arranged at intervals in the first direction; The second dichroic mirror is used to reflect the light emitted by the corresponding second lamp bead to the polarizing reflector, and the polarizing reflector is used to pass through the corresponding second lamp bead and reflect the light from each second dichroic mirror along the main axis direction, and the second direction is perpendicular to the first direction and the main axis direction in pairs.

6. The laser light source device according to claim 5, characterized in that: The second laser includes a row of the second lamp beads for emitting green light, a row of the second lamp beads for emitting blue light, and two rows of the second lamp beads for emitting red light. The optical lens assembly also includes a half-wave plate, wherein the light-emitting side of one row of the second lamp beads for emitting red light is provided with the half-wave plate, and one row of the second lamp beads for emitting red light is directly opposite to the polarizing reflector.

7. The laser light source device according to claim 5, characterized in that: The first laser includes two rows of first lamp beads of different colors, the length of each row of the second lamp beads in the second laser is greater than the length of each row of the first lamp beads in the first laser, and the lengths of the second dichroic mirror and the polarizing reflector are both greater than the length of the first reflector group.

8. The laser light source device according to claim 7, characterized in that: The length of each row of the second lamp beads in the second laser is greater than or equal to twice the length of each row of the first lamp beads in the first laser, and the lengths of the second dichroic mirror and the polarizing reflector are both greater than or equal to twice the length of the first reflector group.

9. The laser light source device according to claim 1, characterized in that: The first laser includes at least one row of first lamp beads for emitting green light, the second laser includes at least one row of second lamp beads for emitting green light, and the optical lens assembly also includes a diffuser, which is arranged on the light-emitting sides of the first lamp beads and the second lamp beads for emitting green light.

10. A projection device, characterized in that: The laser light source device comprises the laser light source device as claimed in any one of claims 1 to 9, and a solid diffuser, a dynamic diffuser, a first fly-eye lens, a first relay lens, a cemented lens, a second relay lens, a second fly-eye lens, a third relay lens, a fourth relay lens, a prism, a DMD chip and a projection lens arranged in sequence along the light output path of the laser light source device, wherein the optical mirror assembly is arranged directly opposite to the solid diffuser.

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