Laser light source device and projection system

Abstract

The invention discloses a laser light source device and a projection system. The laser light source device at least comprises a first laser, a second laser and a light combining assembly. The first laser comprises a plurality of first laser chips, the second laser comprises a plurality of second laser chips and a plurality of third laser chips, the number of the first laser chips is larger than that of the second laser chips, and the number of the first laser chips is larger than that of the third laser chips. The light combining assembly combines the laser emitted by the first laser and the laser emitted by the second laser. In order to improve the brightness proportion of the laser emitted by the first laser chips, the first laser device is arranged, so that the number of the first laser chips is increased, and the brightness cannot be greatly changed when the white balance is adjusted.

Description

Technical Field

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

[0002] Projection display is a technology that uses a flat image to control the light source, utilizing an optical system and projection space to magnify the image and display it on the projection surface. With the development of projection display technology, it has gradually been applied to business activities, conferences and exhibitions, scientific education, military command, traffic management, centralized monitoring, advertising and entertainment, and other fields. Its advantages, such as large display size and clear display, also meet the requirements of large-screen display.

[0003] Laser light sources offer the advantages of wide color gamut and high brightness compared to other light sources, making them increasingly popular in the projection field. Currently, mainstream lasers have evolved from monochromatic lasers to tri-color lasers. Tri-color lasers, in which laser chips emitting three colors are packaged within a single laser, often suffer from uneven brightness across the three lasers, leading to significant brightness variations during white balance adjustment, which can affect projection display quality. Summary of the Invention

[0004] According to a first aspect of an embodiment of the present invention, a laser light source device is provided, comprising at least:

[0005] A first laser and a second laser; the first laser includes a plurality of first laser chips, and the second laser includes a plurality of second laser chips and a plurality of third laser chips; the number of the first laser chips is greater than the number of the second laser chips, and the number of the first laser chips is greater than the number of the third laser chips;

[0006] The light combining component is located on the light output side of the first laser and the second laser, and is used to combine the lasers emitted by the first laser and the second laser.

[0007] In some embodiments of the present invention, the first laser and the second laser are both divided into a first light-emitting area and a second light-emitting area; a plurality of laser chips are disposed in each of the first light-emitting area and the second light-emitting area;

[0008] A plurality of first laser chips are disposed in both the first light emitting area and the second light emitting area of ​​the first laser;

[0009] A plurality of second laser chips are arranged in the first light emitting area of ​​the second laser, and a plurality of third laser chips are arranged in the second light emitting area of ​​the second laser;

[0010] The light combining assembly includes: a first light combining component, a second light combining component, and a third light combining component; the first light combining component is located on the light exit side of the second light exit area of ​​the second laser, the second light combining component is located on the light exit side of the first light exit area of ​​the second laser, and the third light combining component is located on the light exit side of the first laser;

[0011] The first light combining component is used to reflect the laser light emitted from the second light emitting area of ​​the second laser toward the second light combining component; the second light combining component is used to combine the laser light emitted from the first light emitting area of ​​the second laser with the laser light emitted from the second light emitting area of ​​the second laser, and emit them toward the third light combining component; the third light combining component is used to combine the laser light emitted from the first laser with the laser light emitted from the second laser.

[0012] In some embodiments of the present invention, the number of the first laser chips is twice the number of the second laser chips, and the number of the first laser chips is twice the number of the third laser chips.

[0013] In some embodiments of the present invention, the light combining component further includes: a beam reducing component located between the first laser and the third light combining component, and the beam reducing component is used to transfer the laser emitted from the second light emitting area of ​​the first laser toward the first light emitting area of ​​the first laser.

[0014] In some embodiments of the present invention, the beam reducing member comprises a parallel flat plate, the parallel flat plate comprising a first surface and a second surface arranged opposite and parallel to each other, and a third surface and a fourth surface located on either side of the first surface and the second surface; the third surface and the fourth surface are provided with a reflective layer;

[0015] The first surface is a light incident surface, and the second surface is a light exit surface; the laser light emitted from the second light exit area of ​​the first laser is incident on the third surface of the parallel plate from the first surface, the third surface reflects the incident laser light toward the fourth surface, and the fourth surface reflects the incident laser light toward the second surface.

[0016] In some embodiments of the present invention, the beam reducing member includes a first light reflecting portion and a second light reflecting portion; the first light reflecting portion and the second light reflecting portion are arranged parallel to each other;

[0017] The first light reflecting portion is used to reflect the laser light emitted from the second light emitting area of ​​the first laser toward the second light reflecting portion; the second light reflecting portion is used to reflect the incident laser light toward the third light combining component.

[0018] In some embodiments of the present invention, the laser light source device further includes a third laser, and the third laser includes a plurality of first laser chips, a plurality of second laser chips, and a plurality of third laser chips;

[0019] The first laser includes a light emitting area, in which a plurality of first laser chips are arranged;

[0020] The second laser includes a first light emitting area and a second light emitting area; a plurality of second laser chips are arranged in the first light emitting area of ​​the second laser, and a plurality of third laser chips are arranged in the second light emitting area of ​​the second laser;

[0021] The third laser includes a first light emitting area and a second light emitting area; a plurality of first laser chips are arranged in the first light emitting area of ​​the third laser, and a plurality of second laser chips and a plurality of third laser chips are arranged in the second light emitting area of ​​the third laser;

[0022] The light combining component includes: a first component and a second component; the first component is used to combine the laser light emitted by the first laser and the laser light emitted by the second light emitting area of ​​the third laser; the second component is used to combine the laser light emitted by the first light emitting area of ​​the third laser and the laser light emitted by the second laser.

[0023] In some embodiments of the present invention, the laser light source device includes a first laser and two second lasers;

[0024] The first laser and the second laser are both divided into a first light emitting area and a second light emitting area; a plurality of laser chips are arranged in the first light emitting area and the second light emitting area;

[0025] A plurality of first laser chips are disposed in both the first light emitting area and the second light emitting area of ​​the first laser;

[0026] A plurality of second laser chips are arranged in the first light emitting area of ​​the second laser, and a plurality of third laser chips are arranged in the second light emitting area of ​​the second laser;

[0027] The light combining component includes: a first component and a second component; the first component is used to combine the laser light emitted from the first light emitting area of ​​the first laser with the laser light emitted by one second laser; the second component is used to combine the laser light emitted from the second light emitting area of ​​the first laser with the laser light emitted by another second laser.

[0028] In some embodiments of the present invention, the first laser chip is a red laser chip, the second laser chip is a green laser chip, and the third laser chip is a blue laser chip; the red laser chip is used to emit red laser light, the green laser chip is used to emit green laser light, and the blue laser chip is used to emit blue laser light.

[0029] A second aspect of an embodiment of the present invention provides a projection system, comprising any one of the above-mentioned laser light source devices, an illumination system, and a projection lens;

[0030] The lighting system includes: a light homogenizing element and a light modulator located on the light-emitting side of the laser light source device; and the projection lens is located on the light-emitting side of the light modulator.

[0031] The laser light source device and projection system provided by the embodiments of the present invention include at least a first laser, a second laser, and a light combining component; the first laser includes a plurality of first laser chips, the second laser includes a plurality of second laser chips and a plurality of third laser chips, and the number of first laser chips is greater than the number of second laser chips, which in turn is greater than the number of third laser chips. The light combining component combines the laser light emitted by the first laser and the second laser. In order to increase the brightness ratio of the laser light emitted by the first laser chip, a first laser is provided, thereby increasing the number of first laser chips, so that the brightness does not change significantly when adjusting the white balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings introduced below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic diagram of a planar structure of a laser provided by an embodiment of the present invention;

[0034] Figure 2 A schematic structural diagram of a light-emitting device provided in an embodiment of the present invention;

[0035] Figure 3 The second schematic diagram of the planar structure of the laser provided by the embodiment of the present invention;

[0036] Figure 4 The third schematic diagram of the planar structure of the laser provided by the embodiment of the present invention;

[0037] Figure 5 This is a schematic side view of the structure of a laser light source device provided in an embodiment of the present invention;

[0038] Figure 6 For passing Figure 5 Schematic diagram of the combined light spot after the combined light path is shown;

[0039] Figure 7 A second side structural diagram of a laser light source device provided in an embodiment of the present invention;

[0040] Figure 8 for Figure 7 Schematic diagram of the principle of the central attenuation component;

[0041] Figure 9 The third side structural diagram of the laser light source device provided by an embodiment of the present invention;

[0042] Figure 10 Schematic diagram of the combined light spot with a beam reduction component set in the combined light path;

[0043] Figure 11 This is a fourth side structural diagram of the laser light source device provided in an embodiment of the present invention;

[0044] Figure 12 One of the planar structural schematic diagrams of the first laser provided in an embodiment of the present invention;

[0045] Figure 13 One of the schematic planar structures of the second laser and the third laser provided in an embodiment of the present invention;

[0046] Figure 14 A second schematic diagram of the planar structure of the first laser provided in an embodiment of the present invention;

[0047] Figure 15 The second schematic diagram of the planar structure of the second laser and the third laser provided in the embodiment of the present invention;

[0048] Figure 16 A fifth side structural diagram of a laser light source device provided in an embodiment of the present invention;

[0049] Figure 17 For passing Figure 16 Schematic diagram of the combined light spot after the combined light path is shown;

[0050] Figure 18 A sixth side structural diagram of a laser light source device provided in an embodiment of the present invention;

[0051] Figure 19 The seventh side structural diagram of the laser light source device provided by an embodiment of the present invention;

[0052] Figure 20 For passing Figure 18 or Figure 19 Schematic diagram of the combined light spot after the combined light path is shown;

[0053] Figure 21 This is a schematic structural diagram of a projection system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described below with reference to the accompanying drawings and examples. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein; on the contrary, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concepts of the example embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and their repeated descriptions will be omitted. The words expressing position and direction described in the present invention are all explained with reference to the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the present invention. The drawings of the present invention are only used to illustrate the relative position relationship and do not represent the true proportion.

[0055] Projection display is a technology that uses a flat image to control the light source, utilizing an optical system and projection space to magnify the image and display it on the projection surface. With the development of projection display technology, it has gradually been applied to business activities, conferences and exhibitions, scientific education, military command, traffic management, centralized monitoring, advertising and entertainment, and other fields. Its advantages, such as large display size and clear display, also meet the requirements of large-screen display.

[0056] Compared with other light sources, laser light sources have the advantages of high color gamut and high brightness, making them increasingly widely used in the projection field. Figure 1 This is one of the schematic diagrams of the planar structure of the laser provided in an embodiment of the present invention.

[0057] like Figure 1 As shown, the laser includes a mounting substrate 1101 and a light-emitting device 1102 located on the mounting substrate. Circuits and electrical connections are provided on the mounting substrate 1101. An insulating layer is located on the surface of the circuits and electrical connections, and the insulating layer has multiple openings, exposing areas that need to be connected to the light-emitting device 1102 and electrical connections to external circuits.

[0058] In some embodiments, one or more light-emitting devices 1102 may be mounted on each mounting substrate 1101 . The light-emitting devices 1102 on one mounting substrate 1101 may be controlled individually or electrically connected to each other for unified control.

[0059] Figure 2 A schematic structural diagram of a light-emitting device provided in an embodiment of the present invention.

[0060] like Figure 2 As shown, the light emitting device 1102 includes: a tube shell 11021, a laser chip x, a heat sink 11022, a wire 11023, a reflective portion 11024, a cover plate 11025, a connecting portion 11026, a support plate 11027 and a lens portion 11028.

[0061] Shell 11021 forms a housing for encapsulating light-emitting elements. Laser chip x, heat sink 11022, wire 11023, and reflector 11024 are all located within shell 11021. Shell 11021 and cover 11025 are sealed to form a sealed space for encapsulating light-emitting elements. Laser chip x and heat sink 11022 are welded using a high-precision eutectic welder to form a laser chip assembly, also known as a Cos (Chip on Submount) assembly. Each laser chip assembly corresponds to a reflector 11024, and each laser chip assembly corresponds to a lens 11028. Laser light emitted from the laser chip assembly is incident on the corresponding reflector 11024 and reflected by the reflector 11024 toward the opening of shell 11021, thereby entering the corresponding lens 11028, which then collimates the laser light. The laser chip assemblies within the same housing 11021 can be electrically connected to each other via wires 11023. The laser chip assemblies at the edge are connected to the electrical connections within the housing, thereby conducting electrical current through the electrical connections within the housing to the electrical connections at the bottom of the housing. By connecting the housing to the mounting substrate 1101, an electrical connection is established between the mounting substrate 1101 and the laser chips within the housing. Connecting portions 11026 are used to secure support plate 11027 and cover plate 11025 to each other. Support plate 11027 serves as a support component for lens unit 11028.

[0062] Depend on Figure 2 As can be seen, each light-emitting device 1102 can be provided with multiple laser chips x, and the multiple laser chips x can be arranged in a row along the long side of the light-emitting device 1102. When two or more light-emitting devices 1102 are provided on the mounting substrate 1101, the long sides of the light-emitting devices 1102 are arranged adjacent to each other, and the laser chips in the laser can be arranged in multiple rows and columns.

[0063] In order to facilitate the reflection of the type of laser chip in the laser, the position of the laser chip indicated in the drawings of the embodiments of the present invention is actually the position of the lens portion 11028. Since the laser chip is located under the lens portion 11028, in order to reflect the overall structure of the laser and the type of laser chip it contains, the lens position indicated in the following drawings of the embodiments of the present invention is to refer to the laser chip thereunder.

[0064] In some embodiments, as Figure 1 As shown in FIG, the laser chip in the laser can include multiple types for emitting lasers of different wavelengths. Figure 1 For example, the laser may include a first laser chip x1, a second laser chip x2, and a third laser chip x3, wherein the wavelengths of lasers emitted by the first laser chip x1, the second laser chip x2, and the third laser chip x3 are different.

[0065] In some embodiments, as Figure 1 As shown, the first laser chip x1 is arranged in a row, and the second laser chip x2 and the third laser chip x3 are arranged in a row. Optionally, the first laser chip x1 can be a red laser chip, the second laser chip x2 can be a green laser chip, and the third laser chip x3 can be a blue laser chip. The red laser chip can emit red laser light, the green laser chip can emit green laser light, and the blue laser chip can emit blue laser light.

[0066] The laser used in the embodiment of the present invention can be a semiconductor laser. Since different laser chips use different materials, the luminous efficiency varies, resulting in uneven brightness of the three-color laser. Although various means are used to increase the power of the laser, the brightness varies greatly when adjusting the white balance, affecting the projection display effect.

[0067] In view of this, an embodiment of the present invention provides a laser light source device, Figure 3 The second schematic diagram of the planar structure of the laser provided by the embodiment of the present invention; Figure 4 The third schematic diagram of the planar structure of the laser provided by the embodiment of the present invention; Figure 5 This is one of the side structural schematic diagrams of the laser light source device provided in an embodiment of the present invention.

[0068] like Figure 3 、 Figure 4 and Figure 5 As shown, the laser light source device comprises at least: a first laser 111, a second laser 112 and a light combining component 12. The first laser 111 comprises a plurality of first laser chips x1, and the second laser 112 comprises a plurality of second laser chips x2 and a plurality of third laser chips x3.

[0069] The lasers used in laser light source devices are mostly semiconductor lasers. The laser light emitted by semiconductor lasers has a certain divergence angle, and the emitted laser light forms an elliptical pattern in the far field. Among them, the laser chip is composed of multiple stacked semiconductor layers. The long axis direction of the ellipse corresponds to the plane parallel to the stacking structure of the laser chip, and the short axis direction of the ellipse corresponds to the stacking direction of the laser chip. The divergence angle of the laser light emitted by the laser chip along the plane parallel to the stacking structure is greater than the divergence angle along the stacking direction. Therefore, the long axis direction of the ellipse can be called the fast axis direction of the laser, and the short axis direction of the ellipse can be called the slow axis direction of the laser.

[0070] like Figure 3 and Figure 4The laser shown in FIG. 1 may include a first side parallel to the fast axis direction and a second side parallel to the slow axis direction. The first laser 111 and the second laser 112 may be arranged along a first direction x, and the first side of the laser is parallel to the first direction x, so the fast axis direction of the laser emitted by the laser is parallel to the first direction x. The second side of the laser is parallel to the second direction y, and the plane formed by the first direction x and the second direction y is the plane on which the laser is installed. The third direction z is the height direction of the laser, and is also the laser emission direction of the laser. As shown in FIG. Figure 5 As shown, the light combining component 12 is located at the light output side of the first laser 111 and the second laser 112 , and is used to combine the lasers emitted by the first laser 111 and the second laser 112 .

[0071] In the embodiment of the present invention, Figure 3 and Figure 4 As shown, the first laser 111 includes multiple first laser chips x1, and the second laser 112 includes multiple second laser chips x2 and multiple third laser chips x3; the number of first laser chips x1 is greater than the number of second laser chips x2, and the number of first laser chips x1 is greater than the number of third laser chips x3.

[0072] By increasing the number of first laser chips x1, the brightness ratio of the laser light emitted by the first laser chip x1 can be increased, thereby making the brightness of laser light of different colors more balanced and avoiding significant brightness changes when adjusting the white balance.

[0073] In some applications, the red brightness of a three-color laser is low. Therefore, in a specific implementation, the first laser chip x1 is a red laser chip, the second laser chip x2 is a green laser chip, and the third laser chip x3 is a blue laser chip. The red laser chip is used to emit red laser light, the green laser chip is used to emit green laser light, and the blue laser chip is used to emit blue laser light. Increasing the number of red laser chips can thus improve the brightness of the red laser light.

[0074] In some embodiments, as Figure 3 and Figure 4 As shown, the first laser 111 and the second laser 112 each include two light-emitting devices, each of which can be used as a light-emitting area. Therefore, the first laser 111 and the second laser 112 each include two light-emitting areas, which can be called first light-emitting areas c1 and second light-emitting areas c2. The first light-emitting areas c1 and the second light-emitting areas c2 of the first laser 111 and the second laser 112 are alternately arranged along the first direction x.

[0075] Multiple first laser chips x1 are disposed in the first light exit area c1 and the second light exit area c2 of the first laser 111; multiple second laser chips x2 are disposed in the first light exit area c1 of the second laser 112; multiple third laser chips x3 are disposed in the second light exit area c2 of the second laser 112.

[0076] like Figure 5 As shown, the light combining component 12 includes: a first light combining component 121, a second light combining component 122 and a third light combining component 123. The first light combining component 121 is located at the light emitting side of the second light emitting area c2 of the second laser 112, the second light combining component 122 is located at the light emitting side of the first light emitting area c1 of the second laser 112, and the third light combining component 123 is located at the light emitting side of the first laser 111. The first light combining component 121 receives the laser light emitted from the second light emitting area c2 of the second laser 112, and reflects the laser light emitted from the second light emitting area c2 of the second laser 112 received to the second light combining component 122; the second light combining component 122 transmits the laser light emitted from the second light emitting area c2 of the second laser 112 received, and receives the laser light emitted from the first light emitting area c1 of the second laser 112, and reflects the laser light emitted from the first light emitting area c1 of the second laser 112 received, thereby converting the second laser 111 into a laser beam. The laser emitted from the first light emitting area c1 of the optical device is combined with the laser emitted from the second light emitting area c2 and emitted to the third light combining component 123; the third light combining component 123 receives the laser emitted by the second laser 112 after the combination, and transmits the laser emitted by the second laser 112, while receiving the laser emitted by the first laser 111 and reflecting the received laser emitted by the first laser 111, thereby achieving the combination of the laser emitted by the first laser 111 and the laser emitted by the second laser 112.

[0077] In some embodiments, the first light combiner 121 can utilize a reflective film or mirror to reflect light across the entire wavelength range. The second and third light combiners 122 and 123 can utilize dichroic films or mirrors to combine laser beams of different wavelengths. In some embodiments, the first laser chip x1 is a red laser chip, the second laser chip x2 is a green laser chip, and the third laser chip x3 is a blue laser chip. In this case, the second light combiner 122 reflects green laser light and transmits blue laser light, while the third light combiner 123 reflects red laser light and transmits both blue and green laser light.

[0078] In some embodiments, as Figure 3As shown, the first laser 111 may include two light-emitting devices, each including four first laser chips x1. The second laser 112 may include two light-emitting devices, each including five laser chips. The light-emitting device corresponding to the first light-emitting area c1 of the second laser 112 may include five second laser chips x2, and the light-emitting device corresponding to the second light-emitting area c2 of the second laser 112 may include five third laser chips x3. This results in a ratio of the number of first laser chips x1, second laser chips x2, and third laser chips x3 of 8:5:5. This increases the number of first laser chips x1, thereby improving the brightness of the laser light emitted by the first laser chips x1.

[0079] In some embodiments, as Figure 4 As shown, the first laser 111 may include two light-emitting devices, each including five first laser chips x1. The second laser 112 may include two light-emitting devices, each including five laser chips. The light-emitting device corresponding to the first light-emitting area c1 of the second laser 112 may include five second laser chips x2, and the light-emitting device corresponding to the second light-emitting area c2 of the second laser 112 may include five third laser chips x3. This results in a ratio of 10:5:5 between the number of first laser chips x1, the number of second laser chips x2, and the number of third laser chips x3. The number of first laser chips is twice the number of second or third laser chips. This further improves the brightness of the laser light emitted by the first laser chip x1.

[0080] The laser provided in the embodiment of the present invention adopts a modular packaging form, and each light-emitting device is packaged separately. Each light-emitting device can be installed on a mounting substrate as an independent module as required, and the mounting substrate is then connected to an external circuit board. Therefore, it is easy to make individual improvements to the wiring inside the light-emitting device or the circuit board, and it is more versatile.

[0081] When connecting the laser used in the embodiments of the present invention to an external circuit, it can be soldered to the circuit board via the pads on the bottom or plugged into the circuit board via the plug pins. This eliminates the need for rigid pins around the laser, reduces the area occupied on the circuit board, and facilitates miniaturization.

[0082] The first laser 111 provided in the embodiments of the present invention includes two light-emitting devices, each of which is equipped with four or five first laser chips. The second laser 112 includes two light-emitting devices, each of which includes five second laser chips or five third laser chips. The number of light-emitting devices included in the above lasers and the number of laser chips included in each light-emitting device are for illustrative purposes only.

[0083] Figure 6 For passing Figure 5Schematic diagram of the combined light spot after the combined light path is shown.

[0084] In some embodiments, as Figure 6 As shown, the first laser chip x1 can emit red laser, the second laser chip x2 can emit green laser, and the third laser chip x3 can emit blue laser. The divergence angles of lasers of different colors are different. The red laser has a larger divergence angle than the green laser and the blue laser. Therefore, as the optical path increases, the size of the red laser spot R will be larger. The size of the combined light spot restricts the size of the focusing lens in the subsequent optical path, and thus affects the size of the optical engine to a certain extent. Due to the physical distance between the two light-emitting devices in the first laser 111, according to Figure 5 After the three-color lasers are combined in the combined optical path shown, the size of the red laser spot is relatively large, which is not conducive to the miniaturization of the optical engine.

[0085] In view of this, a beam reduction component 12s may be provided in the light combining assembly 12 to reduce the beam of the laser light emitted by the first laser, thereby reducing the size of the combined light spot.

[0086] Figure 7 A second side structural diagram of a laser light source device provided in an embodiment of the present invention; Figure 8 for Figure 7 Schematic diagram of the principle of the central attenuation component; Figure 9 This is the third side structural schematic diagram of the laser light source device provided in an embodiment of the present invention.

[0087] like Figure 7 and Figure 9 As shown, the light combining component 12 also includes: a beam reducing component 12s, which is located between the first laser 111 and the third light combining component 123. The beam reducing component 12s is used to transfer the laser emitted from the second light emitting area c2 of the first laser 111 toward the first light emitting area c1 of the first laser 111, thereby making the laser spots emitted by the two light emitting devices of the first laser closer.

[0088] In some embodiments, as Figure 7 and Figure 8 As shown, the attenuation component 12s includes parallel plates, which include a first surface s1 and a second surface s2 that are opposite and parallel to each other, and a third surface s3 and a fourth surface s4 located on both sides of the first surface s1 and the second surface s2; a reflective layer is provided on the third surface s3 and the fourth surface s4, which can reflect incident light.

[0089] The first surface s1 is the light incident surface, the second surface s2 is the light emitting surface, and the parallel plate is arranged on the light emitting side of the second light emitting area c2 of the first laser 111. The laser light emitted from the first light emitting area c1 of the first laser 111 is incident from the first surface s1 to the interior of the parallel plate. When the laser light is incident on the third surface s3 of the parallel plate, it is reflected by the third surface s3 to the fourth surface s4, thereby causing the laser light to propagate within the parallel plate. When the laser light is incident on the fourth surface s4, the incident laser light is reflected toward the second surface s2, thereby emitting outward from the second surface s2.

[0090] The first surface s1 and the second surface s2 are perpendicular to the incident laser light, and the third surface s3 and the fourth surface s4 are inclined relative to the incident laser light. The third surface s3 and the fourth surface s4 can be parallel to each other and inclined at 45 degrees relative to the incident laser light. The distance between the third surface s3 and the fourth surface s4 can be set according to the travel distance of the laser light.

[0091] The cut angles produced during the processing of the parallel plates may cause light leakage. In order to avoid the loss of efficiency, in some embodiments, such as Figure 8 As shown, the beam reduction component 12s may include a first light reflecting portion 12f1 and a second light reflecting portion 12f2, and the first light reflecting portion 12f1 and the second light reflecting portion 12f2 are arranged parallel to each other and at a certain distance from each other. The first light reflecting portion 12f1 is used to receive the laser light emitted from the second light emitting area c2 of the first laser 111, and reflect the received laser light emitted from the second light emitting area c2 of the first laser 111 toward the second light reflecting portion 12f2; the second light reflecting portion 12f2 then reflects the received laser light toward the third light combining component 123. The laser light emitted from the first light emitting area c1 of the first laser 111 directly enters the third light combining component 123, so the laser light emitted from the second light emitting area c1 can be transferred toward the direction of the first light emitting area c1 by setting two light reflecting portions, so that the light spots of the laser light emitted from the two light emitting areas are closer, which is beneficial to reducing the size of the light combining spot.

[0092] The first reflective portion 12f1 and the second reflective portion 12f2 can be made of a reflective film or a reflective mirror. By using the first reflective portion 12f1 and the second reflective portion 12f2 to compress the light spot of the laser emitted by the first laser, the uniformity of the final projection image of the entire device can reach 93%.

[0093] Figure 10 Schematic diagram of the combined light spot with a beam reduction component set in the combined light path.

[0094] contrast Figure 6 and Figure 10By setting a beam reduction component 12s on the light output side of the first laser 111, the spot size of the three-color laser after combining can be reduced by nearly 30%, thereby achieving the miniaturization of the optical engine while ensuring the uniformity and speckle of the entire screen.

[0095] Figure 11 This is the fourth side structural schematic diagram of the laser light source device provided in an embodiment of the present invention.

[0096] In some embodiments, as Figure 11 As shown, the laser light source device further includes: phase delay elements (12z1 and 12z2), a focusing lens 13 and diffusion elements (141 and 142).

[0097] The phase delay element may include a first phase delay element 12z1 and a second phase delay element 12z2, wherein the first phase delay element 12z1 may be located on the light-emitting side of the first laser 111 and the first light-emitting area c1 or the second light-emitting area c2; the second phase delay element 12z2 may be located on half of the emission path of the second laser.

[0098] The laser light emitted by the laser is all polarized light, and the phase retarder element can delay the phase of the incident laser light by π, thereby rotating the polarization direction of the laser light by 90 degrees. The polarization directions of the laser light that has not passed through the phase retarder element 13 are perpendicular to the polarization directions of the laser light that has passed through the phase retarder element 13. This can significantly reduce the coherence between the laser light and thus reduce the contrast of the speckle. In some embodiments, the phase retarder element can be a half-wave plate or a liquid crystal wave plate, which is not limited here.

[0099] When a light guide 21 or other light homogenizing element is provided in the projection device, it is necessary to focus the outgoing laser so that more light can be incident on the light guide 21. Therefore, a focusing lens 13 is required to be provided in the light path. Figure 11 Taking only one convex lens as the focusing lens 13 as an example for illustration, in specific implementation, a lens group may also be provided as needed to achieve the focusing effect, which is not limited here.

[0100] The diffusion element can be located on the light-emitting side of the light-combining assembly 12 to further diffuse the incident laser light, thereby improving the uniformity of the combined light beam and reducing laser speckle. The diffusion element can be a diffuser 141, a moving diffuser 142, a diffusion wheel, etc., without limitation.

[0101] The combined laser beams pass through a diffuser to increase the transmission angle, reduce speckle, and improve image uniformity. The beams are then converged by a focusing lens and enter a light guide, where they undergo multiple reflections. A speckle reduction device, such as a vibrating diffuser or a diffuser wheel, is placed between the focusing lens and the light guide. The rapid rotation of the diffuser wheel increases the emission angles of the three wavelengths. Combined with the light guide, this achieves high-brightness, low-speckle, and highly uniform laser illumination.

[0102] The embodiment of the present invention increases the number of first laser chips by providing first lasers, thereby improving the brightness of the laser light emitted by the first laser chips and facilitating white balance adjustment. However, the brightness of the laser light source device needs to be further improved.

[0103] Figure 12 One of the planar structural schematic diagrams of the first laser provided in an embodiment of the present invention; Figure 13 One of the schematic planar structures of the second laser and the third laser provided in an embodiment of the present invention; Figure 14 A second schematic diagram of the planar structure of the first laser provided in an embodiment of the present invention; Figure 15 The second schematic diagram of the planar structure of the second laser and the third laser provided in the embodiment of the present invention; Figure 16 This is the fifth side structural schematic diagram of the laser light source device provided in an embodiment of the present invention.

[0104] In some embodiments, as Figures 12 to 16 As shown, the laser light source device further includes a third laser 113 , which includes a plurality of first laser chips x1 , a plurality of second laser chips x2 , and a plurality of third laser chips x3 .

[0105] like Figure 12 and Figure 14 As shown, the first laser 111 can be provided with a light emitting device, and the first laser 111 includes a light emitting area, in which a plurality of first laser chips x1 are provided. Figure 13 and Figure 15 As shown, the second laser 112 and the third laser 113 each include two light-emitting devices, each of which can serve as a light-emitting area. Therefore, the second laser 112 and the third laser 113 each include a first light-emitting area c1 and a second light-emitting area c2. The first light-emitting areas c1 and the second light-emitting areas c2 of the second laser 112 and the third laser 113 are arranged alternately along the first direction x. A plurality of second laser chips x2 are disposed within the first light-emitting area c1 of the second laser 112, and a plurality of third laser chips x3 are disposed within the second light-emitting area c2 of the second laser 112. A plurality of first laser chips x1 are disposed within the first light-emitting area c1 of the third laser 113, and a plurality of second laser chips x2 and a plurality of third laser chips x3 are disposed within the second light-emitting area c1 of the third laser 113.

[0106] like Figure 16 As shown, the second laser 112 and the third laser 113 are located in the same plane, and the first laser and the third laser 113 are arranged perpendicular to each other. The light combining component includes: a first component 12a and a second component 12b; the first component 12a includes a light combining component, and the second component 12b includes a first light combining component 121, a second light combining component 122, and a third light combining component 123. The first component 12a is located at the output light intersection plate of the second light output area c2 of the first laser 111 and the third laser 113. The first component 12a is used to combine the laser light emitted by the first laser 111 with the laser light emitted by the second light output area c2 of the third laser 113, and emit them to the first light combining component 121. The first light combining element 121 receives the laser light emitted from the first light emitting area c1 of the third laser 113, and emits the received laser light to the second light combining element 122; the second light combining element 122 transmits the laser light emitted from the first light emitting area c1 of the third laser 113, and at the same time receives the laser light emitted from the second light emitting area c2 of the second laser 112, and reflects the laser light emitted from the second light emitting area c2 of the second laser 112, thereby combining the laser light emitted from the first light emitting area c1 of the third laser 113 and the laser light emitted from the second light emitting area c2 of the second laser 112. The lasers emitted from the two light emitting areas c2 are combined and emitted to the third light combining component 123; the third light combining component 123 transmits the combined laser beams received from the first light emitting area c1 of the third laser 113 and the second light emitting area c2 of the second laser 112, and at the same time receives the laser beam emitted from the first light emitting area c1 of the second laser 112, and reflects the laser beam emitted from the first light emitting area c1 of the second laser 112, thereby combining the laser beam emitted from the first light emitting area c1 of the third laser 113 and the laser beam emitted from the second laser 112.

[0107] In some embodiments, the first light-combining element 121 can utilize a reflective film or a reflective mirror to reflect light across the entire wavelength range. The first component 12a, the second light-combining element 122, and the third light-combining element 123 can utilize dichroic films or dichroic mirrors to combine lasers of different wavelengths. In some embodiments, the first laser chip x1 is a red laser chip, the second laser chip x2 is a green laser chip, and the third laser chip x3 is a blue laser chip. In this case, the first component 12a reflects green and blue lasers and transmits red lasers. The second light-combining element 122 reflects blue lasers and transmits red lasers. The third light-combining element 123 reflects green lasers and transmits blue and red lasers.

[0108] In some embodiments, the first laser 111 in the laser light source device can be used as follows Figure 12 The laser shown, the second laser 112 and the third laser 113 can be used as Figure 13The laser shown. The first laser 111 includes a light-emitting device, which is equipped with four first laser chips x1. The second laser 112 includes two light-emitting devices, each of which includes five laser chips. The light-emitting device corresponding to the first light-emitting area c1 of the second laser 112 includes five second laser chips x2, and the light-emitting device corresponding to the second light-emitting area c2 of the second laser 112 includes five third laser chips x3. The third laser 113 includes two light-emitting devices. The light-emitting device corresponding to the first light-emitting area c1 includes four first laser chips x1, and the light-emitting device corresponding to the second light-emitting area c2 includes three second laser chips x2 and two third laser chips x3. This results in a ratio of the number of first laser chips x1, second laser chips x2, and third laser chips x3 of 8:8:7. Based on the above embodiment, the number of second laser chips x2 and third laser chips x3 is increased, thereby improving the output brightness of the laser light source device.

[0109] In some embodiments, the first laser 111 in the laser light source device can be used as follows Figure 14 The laser shown, the second laser 112 and the third laser 113 can be used as Figure 15 The laser shown. The first laser 111 includes a light-emitting device containing five first laser chips x1. The second laser 112 includes two light-emitting devices, each containing five laser chips. The light-emitting device corresponding to the first light-emitting area c1 of the second laser 112 includes five second laser chips x2, and the light-emitting device corresponding to the second light-emitting area c2 of the second laser 112 includes five third laser chips x3. The third laser 113 includes two light-emitting devices. The light-emitting device corresponding to the first light-emitting area c1 includes five first laser chips x1, and the light-emitting device corresponding to the second light-emitting area c2 includes three second laser chips x2 and two third laser chips x3. This results in a ratio of the number of first laser chips x1, second laser chips x2, and third laser chips x3 of 10:8:7. By adding two more first laser chips x1 to the above embodiment, the brightness of the laser light source device is increased while also increasing the brightness of the laser light emitted by the first laser chip x1.

[0110] Figure 17 For passing Figure 16 Schematic diagram of the combined light spot after the combined light path is shown.

[0111] In some embodiments, the first laser chip x1 may emit red laser light, the second laser chip x2 may emit green laser light, and the third laser chip x3 may emit blue laser light. Figure 17As shown, in the light spot after the first laser 111, the second laser 112 and the third laser 113 are combined by the light combining component, the arrangement of the second laser chip x2 and the third laser chip x3 of the third laser 113 is asymmetric, resulting in an asymmetric arrangement of the green laser spot G and the blue laser spot B in the combined light spot, resulting in uneven color of the combined light spot.

[0112] In view of this, an embodiment of the present invention further provides a combined light path. Figure 18 This is a sixth side structural diagram of a laser light source device provided by an embodiment of the present invention. Figure 19 This is the seventh side structural schematic diagram of the laser light source device provided in an embodiment of the present invention.

[0113] In some embodiments, the laser light source device may include a first laser 111 and two second lasers 112. The first laser 111 and the second laser may both be Figure 4 The first laser and the second laser in.

[0114] like Figure 4 As shown, the first laser 111 and the second laser 112 are each equipped with two light-emitting devices, thereby dividing the first light-emitting area c1 and the second light-emitting area c2. Each light-emitting device includes five laser chips. Specifically, the light-emitting devices corresponding to the first light-emitting area c1 and the second light-emitting area c2 of the first laser 111 are each equipped with five first laser chips x1; the light-emitting device corresponding to the first light-emitting area c1 of the second laser 112 is equipped with five second laser chips x2, and the light-emitting device corresponding to the second light-emitting area c2 of the second laser 112 is equipped with five third laser chips x3.

[0115] In some embodiments, as Figure 18 As shown, the first laser 111 and the two second lasers 112 have the same light emission direction. The light combining assembly includes: a first assembly and a second assembly; the first assembly includes a first light combining element 121, a second light combining element 122, and a third light combining element 123; the second assembly includes a fourth light combining element 124, a fifth light combining element 125, and a sixth light combining element 126; and the first and second assemblies share a seventh light combining element 127 and an eighth light combining element 128.

[0116] The first light combining element 121 receives the laser light emitted from the second light emitting area c2 of the second laser 112 and reflects the received laser light toward the second light combining element 122. The second light combining element 122 transmits the laser light emitted from the second light emitting area c2 of the second laser 112 and simultaneously receives and reflects the laser light emitted from the first light emitting area c1 of the second laser 112, thereby combining the laser light emitted from the second laser 112 and emitting it toward the seventh light combining element 127. The third light combining element 123 receives the laser light emitted from the first light emitting area c1 of the first laser 111 and reflects the received laser light toward the eighth light combining element 128. The eighth light combining element 128 transmits the laser light emitted from the first light emitting area c1 of the first laser 111 toward the seventh light combining element 127. The seventh light combining element 127 combines the laser light emitted from the first light emitting area c1 of the first laser 111 with the laser light emitted from the second laser 112.

[0117] The fourth light combining element 124 receives the laser light emitted from the second light emitting area c2 of the other second laser 112 and reflects the received laser light toward the fifth light combining element 125. The fifth light combining element 125 transmits the laser light emitted from the second light emitting area c2 of the second laser 112 and simultaneously receives and reflects the laser light emitted from the first light emitting area c1 of the second laser 112, thereby combining the laser light emitted from the other second laser 112 and emitting it toward the seventh light combining element 127. The sixth light combining element 126 receives the laser light emitted from the second light emitting area c2 of the first laser 111 and reflects the received laser light toward the eighth light combining element 128. The eighth light combining element 128 transmits the laser light emitted from the second light emitting area c2 of the first laser 111 toward the seventh light combining element 127. The seventh light combining element 127 combines the laser light emitted from the second light emitting area c2 of the first laser 111 with the laser light emitted from the other second laser 112.

[0118] In order to avoid obstruction between the optical paths, the light combining elements located on the light-emitting sides of the two lasers are set at different heights in the third direction z, and the light combining elements located on the light-emitting sides of the first light-emitting area and the second light-emitting area of ​​the first laser are set at different heights in the third direction z. Among them, the first light combining element 121, the third light combining element 123, the fourth light combining element 124, the sixth light combining element 126 and the eighth light combining element 128 can use reflective films or reflective mirrors to reflect light of the entire wavelength band; the second light combining element 122, the fifth light combining element 125 and the seventh light combining element 127 can use dichroic films or dichroic mirrors to combine lasers of different wavelengths. In some embodiments, the first laser chip x1 is a red laser chip, the second laser chip x2 is a green laser chip, and the third laser chip x3 is a blue laser chip. The second light combining element 122 is used to reflect green laser light and transmit blue laser light, the fifth light combining element 125 is used to reflect green laser light and transmit blue laser light, and the seventh light combining element 127 is used to reflect red laser light and transmit green laser light and blue laser light.

[0119] In some embodiments, as Figure 19 As shown, two second lasers 112 are arranged opposite each other, and the first laser 111 is arranged side by side with one of the second lasers 112. The light combining assembly includes: a first assembly and a second assembly; the first assembly and the second assembly share a first light combining component 121, the first assembly also includes a second light combining component 122 and a third light combining component 123, and the second assembly also includes a fourth light combining component 124 and a fifth light combining component 125.

[0120] The second light combining component 122 receives the laser light emitted from the second light emitting area c2 of the second laser 112, and reflects the received laser light toward the third light combining component 123; the third light combining component 123 transmits and receives the laser light emitted from the second light emitting area c2 of the second laser 112, and at the same time receives and reflects the laser light emitted from the first light emitting area c1 of the second laser 112, thereby combining the laser light emitted by the second laser 112 and emitting it toward the first light combining component 121.

[0121] The fourth light combining component 124 receives the laser light emitted from the second light emitting area c2 of another second laser 112, and reflects the received laser light to the fifth light combining component 125; the fifth light combining component 125 transmits and receives the laser light emitted from the second light emitting area c2 of the above-mentioned second laser 112, and at the same time receives and reflects the laser light emitted from the first light emitting area c1 of the second laser 112, thereby combining the laser light emitted by the other second laser 112 and emitting it to the first light combining component 121.

[0122] The first light combining element 121 transmits and receives the laser light emitted by the second laser 112 , and simultaneously receives and reflects the laser light emitted by the first laser 111 , thereby combining the laser lights emitted by the first laser 111 and the two second lasers 112 .

[0123] The second and fourth light combiners 122 and 124 can utilize reflective films or mirrors to reflect light across the entire wavelength range. The third and fifth light combiners 123 and 125, along with the first light combiner 121, can utilize dichroic films or mirrors to combine laser beams of different wavelengths. In some embodiments, the first laser chip x1 is a red laser chip, the second laser chip x2 is a green laser chip, and the third laser chip x3 is a blue laser chip. The third and fifth light combiners 123 and 125 are configured to reflect green laser light and transmit blue laser light, while the first light combiner 121 is configured to reflect red laser light and transmit both green and blue laser light.

[0124] Figure 20 For passing Figure 18 or Figure 19 Schematic diagram of the combined light spot after the combined light path is shown.

[0125] When using Figure 18 or Figure 19 In the combined light path shown, since the number of the second laser chip and the third laser chip in the second laser is the same and the arrangement is symmetrical, the color distribution of the combined light spot is more uniform. In some embodiments, the first laser chip x1 can emit red laser, the second laser chip x2 can emit green laser, and the third laser chip x3 can emit blue laser. Figure 20 As shown, in the light spots after the first laser 111 and the second laser 112 are combined by the light combining component, the red laser spot R, the green laser spot G and the blue laser spot B are arranged symmetrically, and the combined light spots have uniform colors.

[0126] The laser light source device provided by the embodiment of the present invention can achieve small size and high uniformity while supporting the overall luminous flux requirement of 1000lm to 2000lm.

[0127] Based on the same inventive concept, an embodiment of the present invention further provides a projection system. Figure 21 This is a schematic structural diagram of a projection system provided by an embodiment of the present invention.

[0128] like Figure 21 As shown, the projection system includes: a laser light source device 1, an illumination system 2 and a projection lens 3.

[0129] The laser light source device 1 can be any of the aforementioned laser light source devices. The illumination system 2 is located on the light-emitting side of the laser light source device 1 and is used to shape and homogenize the laser beam emitted by the laser light source device. The illumination system 2 includes a light homogenization element 21, a shaping lens 22, and an optical modulator 23.

[0130] The light homogenizing element 21 may be a light pipe or a fly-eye lens, etc. The shaping lens 22 may adjust the shape and size of the laser spot incident on the light modulator 23 so that the laser beam is incident on the light modulator 23 at a suitable angle.

[0131] The light modulator 23 is used to modulate the incident light to form an image. In a specific implementation, the light modulator can be a transmissive light modulator or a reflective light modulator.

[0132] In some embodiments, the light modulator 23 can use Liquid Crystal on Silicon (LCoS) or a Digital Micromirror Device (DMD). LCoS is based on semiconductor technology and is formed by laminating a complementary metal oxide semiconductor (CMOS) substrate to a glass substrate containing transparent electrodes, and then injecting liquid crystal packaging. LCoS has the characteristics of high aperture ratio and high resolution of each pixel, which can form high-resolution images. The DMD includes many tiny mirrors, each of which can be driven individually for deflection. By controlling the deflection angle of the DMD, the brightness of the light incident on the projection lens is controlled.

[0133] After the light modulator 23 modulates the incident light to form an image, the light is reflected toward the projection lens 3 , which forms an image, thereby projecting the image into a suitable size for viewing.

[0134] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0135] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A laser light source device, characterized in that: At least: A first laser and a second laser; the first laser includes a plurality of first laser chips, and the second laser includes a plurality of second laser chips and a plurality of third laser chips; the number of the first laser chips is greater than the number of the second laser chips, and the number of the first laser chips is greater than the number of the third laser chips; The light combining component is located on the light output side of the first laser and the second laser, and is used to combine the lasers emitted by the first laser and the second laser.

2. The laser light source device according to claim 1, wherein The first laser and the second laser are both divided into a first light emitting area and a second light emitting area; a plurality of laser chips are arranged in the first light emitting area and the second light emitting area; A plurality of first laser chips are disposed in both the first light emitting area and the second light emitting area of ​​the first laser; A plurality of second laser chips are arranged in the first light emitting area of ​​the second laser, and a plurality of third laser chips are arranged in the second light emitting area of ​​the second laser; The light combining assembly includes: a first light combining component, a second light combining component, and a third light combining component; the first light combining component is located on the light exit side of the second light exit area of ​​the second laser, the second light combining component is located on the light exit side of the first light exit area of ​​the second laser, and the third light combining component is located on the light exit side of the first laser; The first light combining component is used to reflect the laser light emitted from the second light emitting area of ​​the second laser toward the second light combining component; the second light combining component is used to combine the laser light emitted from the first light emitting area of ​​the second laser with the laser light emitted from the second light emitting area of ​​the second laser, and emit them toward the third light combining component; the third light combining component is used to combine the laser light emitted from the first laser with the laser light emitted from the second laser.

3. The laser light source device according to claim 2, wherein: The number of the first laser chips is twice the number of the second laser chips, and the number of the first laser chips is twice the number of the third laser chips.

4. The laser light source device according to claim 2, wherein: The light combining assembly further includes a beam reducing component located between the first laser and the third light combining component, and the beam reducing component is used to transfer the laser light emitted from the second light emitting area of ​​the first laser toward the first light emitting area of ​​the first laser.

5. The laser light source device according to claim 4, wherein: The beam reducing member includes a parallel flat plate, the parallel flat plate including a first surface and a second surface that are opposite and parallel to each other, and a third surface and a fourth surface located on both sides of the first surface and the second surface; the third surface and the fourth surface are provided with a reflective layer; The first surface is a light incident surface, and the second surface is a light exit surface; the laser light emitted from the second light exit area of ​​the first laser is incident on the third surface of the parallel plate from the first surface, the third surface reflects the incident laser light toward the fourth surface, and the fourth surface reflects the incident laser light toward the second surface.

6. The laser light source device according to claim 4, wherein: The beam reducing component includes a first light reflecting portion and a second light reflecting portion; the first light reflecting portion and the second light reflecting portion are arranged parallel to each other; The first light reflecting portion is used to reflect the laser light emitted from the second light emitting area of ​​the first laser toward the second light reflecting portion; the second light reflecting portion is used to reflect the incident laser light toward the third light combining component.

7. The laser light source device according to claim 1, wherein: The laser light source device further includes a third laser, and the third laser includes a plurality of first laser chips, a plurality of second laser chips, and a plurality of third laser chips; The first laser includes a light emitting area, in which a plurality of first laser chips are arranged; The second laser includes a first light emitting area and a second light emitting area; a plurality of second laser chips are arranged in the first light emitting area of ​​the second laser, and a plurality of third laser chips are arranged in the second light emitting area of ​​the second laser; The third laser includes a first light emitting area and a second light emitting area; a plurality of first laser chips are arranged in the first light emitting area of ​​the third laser, and a plurality of second laser chips and a plurality of third laser chips are arranged in the second light emitting area of ​​the third laser; The light combining component includes: a first component and a second component; the first component is used to combine the laser light emitted by the first laser and the laser light emitted by the second light emitting area of ​​the third laser; the second component is used to combine the laser light emitted by the first light emitting area of ​​the third laser and the laser light emitted by the second laser.

8. The laser light source device according to claim 1, wherein The laser light source device includes a first laser and two second lasers; The first laser and the second laser are both divided into a first light emitting area and a second light emitting area; a plurality of laser chips are arranged in the first light emitting area and the second light emitting area; A plurality of first laser chips are disposed in both the first light emitting area and the second light emitting area of ​​the first laser; A plurality of second laser chips are arranged in the first light emitting area of ​​the second laser, and a plurality of third laser chips are arranged in the second light emitting area of ​​the second laser; The light combining component includes: a first component and a second component; the first component is used to combine the laser light emitted from the first light emitting area of ​​the first laser with the laser light emitted by one second laser; the second component is used to combine the laser light emitted from the second light emitting area of ​​the first laser with the laser light emitted by another second laser.

9. The laser light source device according to any one of claims 1 to 8, wherein: The first laser chip is a red laser chip, the second laser chip is a green laser chip, and the third laser chip is a blue laser chip; the red laser chip is used to emit red laser light, the green laser chip is used to emit green laser light, and the blue laser chip is used to emit blue laser light.

10. A projection system, characterized in that: Comprising the laser light source device, the lighting system and the projection lens according to any one of claims 1 to 9; The lighting system includes: a light homogenizing element and a light modulator located on the light-emitting side of the laser light source device; and the projection lens is located on the light-emitting side of the light modulator.

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