A light source system

Abstract

The utility model relates to the field of projection display technology, specifically relate to a light source system, including first light source subassembly, second light source subassembly, third light source subassembly and light combing component, wherein, first light source subassembly is separately arranged at one side relative to second light source subassembly and third light source subassembly, in order to carry out individual heat dissipation to first light source subassembly, light combing component includes wavelength light combing component to carry out light combing to the emergent light of first light source subassembly, second light source subassembly and third light source subassembly, wavelength light combing component is compared with the adoption polaroid and so on polarized light combing element, and the cost is lower, in addition, using polarized light combing element to carry out light combing still can cause light source loss, and using wavelength light combing element to carry out light combing can effectively reduce light source loss.

Description

Technical Field

[0001] This utility model relates to the field of projection display technology, specifically to a light source system. Background Technology

[0002] Currently, most home projectors on the market use lasers as their light source. Laser light sources offer high brightness, excellent color, high image detail, and a long lifespan. High-brightness projectors typically contain multiple laser light sources. However, because laser light sources usually require consideration of heat dissipation and power supply, and the size of the light source system itself is limited, this can affect the heat dissipation of the laser light source to some extent. Utility Model Content

[0003] In view of this, the present invention provides a light source system, which aims to optimize the layout of the light source system and ensure heat dissipation of the laser light source as much as possible.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows: A light source system includes a first light source component, a second light source component, a third light source component, and a light combining component; the first light source component emits a first color light; the second light source component emits a second color light; the third light source component emits a third color light; the first color light, the second color light, and the third color light are all lasers; the first light source component is located on a first side in a first direction; the second light source component includes a second light source sub-component one and a second light source sub-component two; both the second light source sub-component one and the second light source sub-component two are located on a second side in the first direction; or, both the second light source sub-component one and the second light source sub-component two are located at the tail end in the first direction; or, one of the second light source sub-component one and the second light source sub-component two is located on a second side in the first direction, and the other is located at the tail end in the first direction; the third light source component is located on a second side in the first direction; the light combining component includes a wavelength light combining component; the wavelength light combining component transmits at least one color light among the first color light, the second color light, and the third color light and reflects at least another color light; different colors of light incident on the wavelength light combining component are combined and emitted by the wavelength light combining component.

[0005] As an optional implementation, at least one of the first light source assembly, the second light source assembly, and the third light source assembly includes at least two parallel outgoing beams; the at least two outgoing beams are spaced apart in a first direction and are guided to the first direction by different elements respectively.

[0006] As an optional implementation, the emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly are all spaced apart in a first direction.

[0007] As an optional implementation, at least one of the first light source assembly, the second light source assembly, and the third light source assembly includes at least two parallel outgoing beams; the at least two outgoing beams are spaced apart perpendicular to the first direction and guided to the first direction by the same element.

[0008] As an optional implementation, the emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly are all spaced apart in a direction perpendicular to the first direction.

[0009] As an optional implementation, the first light source assembly, the second light source assembly, and the third light source assembly each include at least two parallel emitted beams; the emitted beams of at least one of the three light source assemblies are spaced apart in a first direction, and the emitted beams of the other three light source assemblies are spaced apart perpendicular to the first direction.

[0010] As an optional implementation, the emitted beams of the third light source assembly are spaced apart in a first direction; the emitted beams of the first light source assembly and / or the second light source assembly are spaced apart perpendicular to the first direction.

[0011] As an optional implementation, the second and third light source components are arranged in a staggered manner from the first light source component in a first direction.

[0012] As an optional implementation, the first light source component emits four paths of first-color light after being guided by the light combining component; the second light source component emits three or four paths of second-color light after being guided by the light combining component; the third light source component emits two paths of third-color light after being guided by the light combining component; the three paths of second-color light overlap with three of the first-color light paths respectively, or the four paths of second-color light overlap with four of the first-color light paths respectively; the two paths of third-color light overlap with two of the second-color light paths respectively.

[0013] As an optional implementation, the light spots of the first color light, the second color light, and the third color light are all distributed at intervals perpendicular to the first direction, and the spacing between adjacent light spots is the same.

[0014] As an optional implementation, the first light source assembly includes a first light source unit 1, a first light source unit 2, a first light source unit 3, and a first light source unit 4; the second light source sub-assembly 1 includes a second light source unit 1 and a second light source unit 2, and the second light source sub-assembly 2 includes a second light source unit 3; the third light source assembly includes a third light source unit 1 and a third light source unit 2; when both the second light source sub-assembly 1 and the second light source sub-assembly 2 are located on the second side of the first direction, the light combining assembly further includes a reflection assembly; the wavelength light combining assembly includes a first wavelength light combining element, a second wavelength light combining element, a third wavelength light combining element, a fourth wavelength light combining element, and a fifth wavelength light combining element; the reflection assembly includes a first reflection element, a second reflection element, a third reflection element, and a fourth reflection element; the first wavelength light combining element reflects a first color light and transmits a second color light; the second and third wavelength light combining elements reflect the first color light and transmit the second and third color light; the fourth and fifth wavelength light combining elements reflect the second color light and transmit the third color light.

[0015] As an optional implementation, the second light source sub-assembly 2 further includes a second light source unit 4; the wavelength combining assembly further includes a sixth wavelength combining element; the sixth wavelength combining element reflects the second color light and transmits the first color light.

[0016] As an optional implementation, it further includes a first temperature control component and a second temperature control component; the first temperature control component is connected to the first light source component; the second temperature control component is connected to the second light source component and the third light source component.

[0017] In summary, compared with the prior art, this utility model has the following advantages and beneficial effects: the first light source component is set separately on one side, so the first light source component can be cooled separately; while the second and third light source components are set on other sides, so the second and third light source components can share a temperature control component for temperature control. This structural layout is beneficial to heat dissipation design; the light combining component uses a wavelength light combining component for light combining, which is lower in cost than using polarization light combining elements such as polarizers, and can also effectively reduce light source loss. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0019] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0020] Figure 3 for Figure 1 and Figure 2 The diagram shows the light spots emitted from the structure shown, from left to right: red light spot, green light spot, and blue light spot.

[0021] Figure 4 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0022] Figure 5 for Figure 4 The diagram shows the light spots emitted from the structure shown, from left to right: red light spot, green light spot, and blue light spot.

[0023] Figure 6 This is a structural schematic diagram of Embodiment 4 of the present utility model.

[0024] The labels in the diagram are as follows: First light source unit 111, First light source unit 2 112, First light source unit 3 113, First light source unit 4 114, Second light source unit 121, Second light source unit 2 122, Second light source unit 3 123, Second light source unit 4 124, Third light source unit 131, Third light source unit 2 132, Dissipation element 21, First wavelength light combining element 22, Second wavelength light combining element 23, Third wavelength light combining element 24, Fourth wavelength light combining element 25, Fifth wavelength light combining element 26, Sixth wavelength light combining element 27, First reflective element 28, Second reflective element 29, Third reflective element 210, Fourth reflective element 211, First homogenizing element 212, Second homogenizing element 213. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. If terms such as "first," "second," etc., are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features, or implicitly specifying the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Example 1 This application describes a light source system, such as... Figure 1 As shown, it includes a first light source assembly, a second light source assembly, a third light source assembly, and a light combining assembly.

[0030] The first light source component emits a first color light, the second light source component emits a second color light, and the third light source component emits a third color light. Optionally, the first, second, and third color lights are all narrow-spectrum lights, such as lasers. Optionally, the first, second, and third color lights can be any color light selected from red, green, and blue light. For example, the first color light can be a red laser with a wavelength of 642nm to 654nm, the second color light can be a green laser with a wavelength of 521nm to 533nm, and the third color light can be a blue laser with a wavelength of 450nm to 4568nm.

[0031] like Figure 1 As shown, arrow A points in the first direction. Optionally, the first direction can be the light-emitting direction of the entire light source system, or it can be the light-combining direction of the light-combining component.

[0032] The first light source assembly is located on the first side in the first direction.

[0033] The second light source assembly includes a second light source sub-assembly one and a second light source sub-assembly two, both of which are located on the second side of the first direction.

[0034] The third light source component is located on the second side of the first direction.

[0035] Alternatively, from a spatial perspective, the first light source component can be positioned on the left side of the light output direction of the entire light source system, while the second and third light source components can be positioned on the right, upper, or lower side of the light output direction of the entire light source system. These positions are relative, as long as the first light source component is positioned on a separate side as the second and third light source components. The purpose of this arrangement is to isolate the first light source component for separate heat dissipation.

[0036] The advantages of this arrangement include: if the first light source component generates a large amount of heat, or has high heat dissipation requirements, its isolated placement on one side allows for individual heat dissipation. For example, a first temperature control component can be connected to the first light source component to control its temperature independently. Conversely, if the second and third light source components generate less heat, or have lower heat dissipation requirements, they can share a single temperature control component. For instance, a second temperature control component can be connected to both the second and third light source components to control their temperatures simultaneously. This structural layout is beneficial for heat dissipation design.

[0037] The light combining component includes a wavelength combining component, such as a dichroic mirror or a filter. The wavelength combining component transmits at least one of a first color light, a second color light, and a third color light and reflects at least another color light; different colors of light incident on the wavelength combining component are combined and emitted.

[0038] In this embodiment, the light combining component uses a wavelength light combining component, which is less expensive than using polarization light combining elements such as polarizers. Polarization light combining elements are often expensive, while dichroic mirrors or filters are less expensive, thus reducing the overall cost of the light source system. Furthermore, using polarization light combining elements can cause light source loss, while using a wavelength light combining component can effectively reduce this loss.

[0039] As an optional implementation, at least one of the first light source assembly, the second light source assembly, and the third light source assembly includes at least two parallel outgoing beams. The at least two outgoing beams are spaced apart in a first direction and are guided to the first direction by different elements, thereby allowing for flexible configuration of the optical path and reducing the size of the light source system.

[0040] For example, such as Figure 1 As shown, the first light source assembly includes a first light source unit 111, a first light source unit 112, a first light source unit 113, and a first light source unit 114. The first light source assembly emits red light, thus enabling it to emit four paths of first color light, forming four red light spots. These four red light spots are evenly spaced perpendicular to the first direction, as shown... Figure 3 The light spot pattern is shown on the left side of the image.

[0041] As previously described, the second light source assembly includes a second light source sub-assembly one and a second light source sub-assembly two. The second light source sub-assembly one includes a second light source unit one 121 and a second light source unit two 122, and the second light source sub-assembly two includes a second light source unit three 123. The second light source assembly emits green light, thereby emitting three paths of second-color light to form three green light spots. These three green light spots are also evenly spaced perpendicular to the first direction. Figure 3 The light spot pattern in the middle is shown.

[0042] The third light source assembly includes a first third light source unit 131 and a second third light source unit 132. The third light source assembly emits blue light, thus enabling it to emit two paths of third-color light, forming two blue light spots. These two blue light spots are also evenly spaced perpendicular to the first direction. Figure 3 The light spot pattern is shown on the right side of the image.

[0043] The three second-color beams overlap with three of the first-color beams, and the two third-color beams overlap with two of the second-color beams, in order to reduce the area of ​​the emitted light spot of the entire light source system. For example, as shown... Figure 3 As shown, the three paths of the second color light coincide with the three adjacent paths of the first color light, and the two paths of the third color light coincide with the two adjacent paths of the second color light.

[0044] Optionally, the spacing between adjacent light spots in the first, second, and third color lights is the same to facilitate subsequent processing of the light spots.

[0045] Optionally, the first light source unit 111, the first light source unit 2 112, the first light source unit 3 113, the first light source unit 4 114, the second light source unit 121, the second light source unit 2 122, the second light source unit 3 123, the third light source unit 131, and the third light source unit 2 132 all have the same structure, for example, five laser beads arranged in a row, so that each light source unit emits light as... Figure 3 The long, narrow light spot shown.

[0046] by Figure 1 The structure shown is used as an example for illustration. In Embodiment 1, the light combining component includes a wavelength light combining component and a reflection component. The wavelength light combining component includes a first wavelength light combining element 22, a second wavelength light combining element 23, a third wavelength light combining element 24, a fourth wavelength light combining element 25, and a fifth wavelength light combining element 26. The reflection component includes a first reflection element 28, a second reflection element 29, a third reflection element 210, and a fourth reflection element 211.

[0047] The first wavelength combining element 22 can be a dichroic mirror that reflects red light and transmits green light.

[0048] The second wavelength combining element 23 and the third wavelength combining element 24 can be dichroic mirrors that reflect red light and transmit green and blue light.

[0049] The fourth wavelength light combining element 25 and the fifth wavelength light combining element 26 can be dichroic mirrors that reflect green light and transmit blue light.

[0050] The reflective element can be a mirror capable of reflecting all colors of light, or it can be configured as follows: The first reflective element 28 can be a dichroic mirror capable of reflecting green light; The second reflecting element 29 can be a dichroic mirror capable of reflecting red light; The third reflecting element 210 and the fourth reflecting element 211 can be dichroic mirrors capable of reflecting blue light.

[0051] Optional, in Figure 1 In the structure shown, the emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly can all be designed to be spaced apart in the first direction, so as to configure the optical path more flexibly and further reduce the size of the light source system.

[0052] Specifically, the red light emitted from the first light source unit 111 is reflected by the second reflective element 29 and then directed toward the first light path.

[0053] The red light emitted from the first light source unit 212 is reflected by the third wavelength combining element 24 and then directed onto the second light path.

[0054] The red light emitted from the first light source unit 313 is reflected by the second wavelength combining element 23 and then directed onto the third light path.

[0055] The red light emitted from the first light source unit 414 is reflected by the first wavelength combining element 22 and then directed onto the fourth light path.

[0056] The green light emitted from the second light source unit 121 is reflected by the fourth wavelength light combining element 25 and then directed to the third wavelength light combining element 24. After being transmitted through the third wavelength light combining element 24, it is directed to the second optical path.

[0057] The green light emitted from the second light source unit 122 is reflected by the fifth wavelength light combining element 26 and then directed to the second wavelength light combining element 23. After being transmitted through the second wavelength light combining element 23, it is directed to the third optical path.

[0058] The green light emitted from the second light source unit 3123 is reflected by the first reflective element 28 and then directed to the first wavelength combining element 22. After being transmitted through the first wavelength combining element 22, it is directed to the fourth light path.

[0059] The blue light emitted from the third light source unit 131 is reflected by the fourth reflective element 211 and then directed to the fourth wavelength light combining element 25. After being transmitted through the fourth wavelength light combining element 25 and the third wavelength light combining element 24, it is directed to the second optical path.

[0060] The blue light emitted from the third light source unit 2132 is reflected by the third reflective element 210 and then directed to the fifth wavelength light combining element 26. After being transmitted through the fifth wavelength light combining element 26 and the second wavelength light combining element 23, it is directed to the third optical path.

[0061] The first wavelength combining element 22, the second wavelength combining element 23, the third wavelength combining element 24, and the second reflecting element 29 can be combined into a dichroic mirror that reflects red light and transmits green and blue light. However, due to the presence of multiple optical paths, the size of this dichroic mirror would be relatively large, resulting in a large light source system. Therefore, splitting it into four different optical elements allows for flexible configuration of these four optical elements along the optical paths, and the size of each optical element can be chosen to be smaller, thereby helping to reduce the size of the light source system.

[0062] Similarly, the fourth wavelength combining element 25 and the fifth wavelength combining element 26, the third reflective element 210 and the fourth reflective element 211 also use multiple small optical elements to replace a large optical element, thereby reducing the size of the light source system.

[0063] Therefore, the emitted beams from the first, second, and third light source components are guided to the first direction by different optical elements, which helps to reduce the size of the light source system.

[0064] Optionally, the second and third light source components are staggered from the first light source component in the first direction, so that the emitted beams in each light source component are staggered in the first direction. This allows the first wavelength light combining element 22, the second wavelength light combining element 23, the third wavelength light combining element 24, the second reflective element 29, the first reflective element 28, the fourth wavelength light combining element 25, the fifth wavelength light combining element 26, the third reflective element 210, and the fourth reflective element 211 to also be staggered in the first direction, thereby reducing the size of the entire light source system perpendicular to the first direction.

[0065] In addition, a speckle elimination element 21 is provided in the beam path of the beam combining component. For example, the speckle elimination element 21 is located at the front end of the first direction to minimize speckle in the laser and improve the image clarity, contrast and viewing comfort.

[0066] Furthermore, homogenizing elements can be placed on the green and blue light paths to make the green and blue light more uniform. For example, a first homogenizing element 212 is provided at the light output of the second light source unit 3 123, and a second homogenizing element 213 is provided on the light path before the green and blue light are combined with the red light. The first homogenizing element 212 and the second homogenizing element 213 can be diffusers.

[0067] Example 2 like Figure 2 As shown, the main difference from Embodiment 1 is that one of the second light source sub-component 1 and the second light source sub-component 2 in the second light source assembly is located on the second side of the first direction, and the other is located at the tail end of the first direction. For example, the second light source sub-component 1, which is composed of the second light source unit 121 and the second light source unit 122, is located on the second side of the first direction, and the second light source sub-component 2, which is composed of the second light source unit 123, is located at the tail end of the first direction.

[0068] In this way, since one of the light source sub-components in the second light source assembly no longer needs to change the optical path through other optical elements, it can directly emit light into the combining optical path, which can reduce the cost caused by setting up reflective elements. At the same time, it can also effectively reduce the length of the entire light source system in the first direction. In addition, it can also reduce the loss caused by the laser after being reflected by the reflective element in Embodiment 1.

[0069] In Embodiment 2, the positions of the first light source assembly, the second light source assembly, and the third light source assembly are adjusted to a certain extent compared to Embodiment 1, and the number and position of the wavelength combining elements and the reflective elements in the light combining assembly are also adjusted to a certain extent.

[0070] by Figure 2 The structure shown is used as an example for illustration. In Embodiment 2, the wavelength combining component includes a first wavelength combining element 22, a second wavelength combining element 23, a third wavelength combining element 24, a fourth wavelength combining element 25, and a fifth wavelength combining element 26, and the reflection component includes a second reflection element 29, a third reflection element 210, and a fourth reflection element 211.

[0071] The first wavelength combining element 22 can be a dichroic mirror that reflects red light and transmits green light.

[0072] The second wavelength combining element 23 can be a dichroic mirror that reflects red light and transmits green and blue light.

[0073] The third wavelength combining element 24 can be a dichroic mirror that reflects red light and transmits green light.

[0074] The fourth wavelength combining element 25 can be a dichroic mirror that reflects blue light and transmits red and green light.

[0075] The fifth wavelength combining element 26 can be a dichroic mirror that reflects blue light and transmits green light.

[0076] The reflective element can be a mirror capable of reflecting all colors of light, or it can be configured as follows: The second reflecting element 29 can be a dichroic mirror capable of reflecting red light; The third reflecting element 210 and the fourth reflecting element 211 can be dichroic mirrors capable of reflecting green light.

[0077] Optional, in Figure 2 In the structure shown, the emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly can also be designed to be spaced apart in the first direction, so as to configure the optical path more flexibly and further reduce the size of the light source system.

[0078] Specifically, the red light emitted from the first light source unit 111 is reflected by the second reflective element 29 and then directed toward the first light path.

[0079] The red light emitted from the first light source unit 212 is reflected by the third wavelength light combining element 24 and then directed to the fourth wavelength light combining element 25. After being transmitted through the fourth wavelength light combining element 25, it is directed to the second optical path.

[0080] The red light emitted from the first light source unit 313 is reflected by the second wavelength combining element 23 and then directed onto the third light path.

[0081] The red light emitted from the first light source unit 414 is reflected by the first wavelength combining element 22 and then directed onto the fourth light path.

[0082] The green light emitted from the second light source unit 121 is reflected by the fourth reflective element 211 and then directed to the third wavelength light combining element 24. After being transmitted through the third wavelength light combining element 24 and the fourth wavelength light combining element 25 in sequence, it is directed to the second optical path.

[0083] The green light emitted from the second light source unit 122 is reflected by the third reflective element 210 and then directed to the fifth wavelength combining element 26. After being transmitted through the fifth wavelength combining element 26 and the second wavelength combining element 23, it is directed to the third optical path.

[0084] The green light emitted from the second light source unit 3123 is directed towards the first wavelength combining element 22, and after being transmitted through the first wavelength combining element 22, it is directed towards the fourth optical path.

[0085] The blue light emitted from the third light source unit 131 is reflected by the fourth wavelength combining element 25 and then directed onto the second optical path.

[0086] The blue light emitted from the third light source unit 2132 is reflected by the fifth wavelength light combining element 26 and then directed to the second wavelength light combining element 23. After being transmitted through the second wavelength light combining element 23, it is directed to the third optical path.

[0087] As can be seen, compared with Embodiment 1, Embodiment 2 can reduce the number of reflective elements (first reflective element 28), thereby reducing costs and laser loss due to reflection; and because one less optical element is provided in the first direction, the length of the entire light source system in the first direction can also be reduced.

[0088] In addition, in Embodiment 2, the light-diffusing elements on the green light path and the blue light path are arranged in the following manner: a first light-diffusing element 212 is provided on the light path before the green light is combined with the red light and the blue light, and a second light-diffusing element 213 is provided at the light-emitting point of the third light source assembly.

[0089] Example 3 like Figure 4 As shown, the main difference from Embodiment 2 is that the setting angle of the first light source component and the second light source component has been rotated by 90 degrees. Correspondingly, the number and position of the wavelength combining component and the reflection component in the light combining component have also been adjusted.

[0090] Optional, in Figure 4 In the structure shown, the emitted light beams of at least one of the first light source component, the second light source component, and the third light source component are spaced apart in the first direction, and the emitted light beams of the other three light source components are spaced apart perpendicular to the first direction.

[0091] The advantage of this design is that it can reduce the number of wavelength combining components and reflection components in the light combining assembly, which helps to reduce costs, and it can also reduce the length of the entire light source system perpendicular to the first direction.

[0092] For example, the blue light emitted by the third light source component is spaced apart in the first direction, while the red and green light emitted by the first and second light source components are spaced apart perpendicular to the first direction.

[0093] by Figure 4 The structure shown is used as an example for illustration. In Embodiment 3, the wavelength combining component includes a first wavelength combining element 22, a third wavelength combining element 24, a fourth wavelength combining element 25, and a fifth wavelength combining element 26, and the reflection component includes a third reflection element 210.

[0094] Among them, the first wavelength combining element 22 can be a dichroic mirror that reflects red light and transmits green and blue light.

[0095] The third wavelength combining element 24 can be a dichroic mirror that reflects red light and transmits green light.

[0096] The fourth wavelength combining element 25 can be a dichroic mirror that reflects blue light and transmits red and green light.

[0097] The fifth wavelength combining element 26 can be a dichroic mirror that reflects blue light and transmits green light.

[0098] The third reflecting element 210 can be a reflector capable of reflecting all colors of light, or a dichroic mirror capable of reflecting green light.

[0099] Specifically, the red light emitted from the first light source unit 111 and the first light source unit 112 is reflected by the third wavelength light combining element 24 and then directed to the fourth wavelength light combining element 25. After being transmitted through the fourth wavelength light combining element 25, it is directed to the dissipation element 21, as shown below. Figure 5 The light spot pattern is shown on the left side of the image.

[0100] The red light emitted from the first light source unit 3 113 and the first light source unit 4 114 is reflected by the first wavelength combining element 22 and then directed towards the dissipation element 21, such as Figure 5 The light spot pattern is shown on the left side of the image.

[0101] The green light emitted from the second light source unit 121 and the second light source unit 122 is reflected by the third reflective element 210 and then directed to the fifth wavelength combining element 26. After being transmitted through the fifth wavelength combining element 26 and the first wavelength combining element 22, the light is directed to the dissipation element 21. Figure 5 The light spot pattern in the middle is shown.

[0102] The green light emitted from the second light source unit 123 is directed towards the third wavelength light combining element 24, and after being transmitted through the third wavelength light combining element 24 and the fourth wavelength light combining element 25, it is directed towards the dissipation element 21. Figure 5 The light spot pattern in the middle is shown.

[0103] The blue light emitted from the third light source unit 131 is reflected by the fourth wavelength combining element 25 and then directed towards the dissipation element 21, such as... Figure 5 The light spot pattern is shown on the right side of the image.

[0104] The blue light emitted from the third light source unit 2132 is reflected by the fifth wavelength combining element 26 and then directed towards the dissipation element 21, such as... Figure 5 The light spot pattern is shown on the right side of the image.

[0105] As can be seen, compared with Embodiment 2, Embodiment 3 omits the second wavelength combining element 23, the second reflecting element 29 and the fourth reflecting element 211, thereby reducing costs and significantly reducing the length of the entire light source system in the direction perpendicular to the first direction.

[0106] like Figure 5As shown in Example 3, the four red light spots are distributed in a 2×2 pattern. The three green light spots are distributed in a triangular pattern, with two of the green light spots overlapping with the two adjacent red light spots. The two blue light spots are distributed side by side. Furthermore, the length directions of the red and green light spots are perpendicular to those of the blue light spots.

[0107] In Embodiment 3, the red light emitted from the first light source unit 111 and the second light source unit 112 can be guided to the first direction by the same optical element (the third wavelength combining element 24), the red light emitted from the third light source unit 113 and the fourth light source unit 114 can be guided to the first direction by the same optical element (the first wavelength combining element 22), and the green light emitted from the second light source unit 121 and the second light source unit 122 can be guided to the first direction by the same optical element (the third reflective element 210). It is foreseeable that the blue light emitted from the third light source unit 131 and the second light source unit 132 can also be guided to the first direction by the same optical element, for example, by combining the fourth wavelength combining element 25 and the fifth wavelength combining element 26 into a dichroic mirror, which reflects blue light and transmits red and green light. This design significantly reduces the number of optical elements compared to Embodiments 1 and 2.

[0108] Based on Embodiment 3, this invention can further reduce the number of optical elements in the light combining assembly by placing both the second light source sub-assembly one and the second light source sub-assembly two at the tail end in the first direction, thereby further reducing the cost. In this case, the type and number of optical elements in the light combining assembly can be adaptively adjusted.

[0109] Based on this, the present invention can also adopt the following design: the emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly are all distributed at intervals perpendicular to the first direction, and the emitted beams of each light source assembly are guided to the first direction through the same optical element, so as to further reduce the number of optical elements in the light combining assembly and further reduce costs. In this case, the type and number of optical elements in the light combining assembly can be adjusted adaptively.

[0110] Example 4 In this invention, the number of light source units in each light source assembly can be increased or decreased as needed, and correspondingly, the type and number of optical elements in the light combining assembly can also be increased or decreased as needed.

[0111] Here, we will take the example of adding a green light source unit to the first embodiment as an example for explanation.

[0112] like Figure 6As shown, Embodiment 4 adds a second light source unit 124 and a sixth wavelength combining element 27 to Embodiment 1.

[0113] The second light emitted by the second light source unit 4124 is green laser light. At this time, the entire second light source assembly emits four paths of second light, forming four green light spots. These four green light spots are evenly spaced in a direction perpendicular to the first direction, and the light spot pattern is similar to the light spot pattern of the first light in Embodiment 1. Furthermore, these four green light spots coincide with the four red light spots emitted by the first light source assembly.

[0114] The sixth wavelength combining element 27 can be a dichroic mirror that reflects green light and transmits red light.

[0115] The green light emitted from the second light source unit 4124 is reflected by the sixth wavelength combining element 27 and then directed onto the first optical path.

[0116] The red light emitted from the first light source unit 111 is reflected by the second reflective element 29 and then directed to the sixth wavelength combining element 27. After being transmitted through the sixth wavelength combining element 27, it is directed to the first optical path.

[0117] Optionally, the first light-diffusing element 212 may also be disposed at the light-emitting position of the second light source unit 124.

[0118] The other parts of Example 4 are the same as those of Example 1, and will not be described again.

[0119] Compared with Example 1, Example 4 adds a light source unit, which can improve the brightness of a certain color light in the combined light emission spot, and thus ultimately improve the overall brightness of the combined light emission spot.

[0120] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A light source system, characterized in that: It includes a first light source assembly, a second light source assembly, a third light source assembly, and a light combining assembly; The first light source component emits a first color light; the second light source component emits a second color light; the third light source component emits a third color light; the first color light, the second color light, and the third color light are all lasers; The first light source assembly is located on the first side in the first direction; The second light source assembly includes a second light source sub-assembly one and a second light source sub-assembly two; both the second light source sub-assembly one and the second light source sub-assembly two are located on the second side of the first direction; or, both the second light source sub-assembly one and the second light source sub-assembly two are located at the tail end of the first direction; or, one of the second light source sub-assembly one and the second light source sub-assembly two is located on the second side of the first direction, and the other is located at the tail end of the first direction. The third light source assembly is located on the second side of the first direction; The light combining component includes a wavelength light combining component; the wavelength light combining component transmits at least one of a first color light, a second color light, and a third color light and reflects at least another color light; different colors of light directed at the wavelength light combining component are combined and emitted by the wavelength light combining component.

2. The light source system as described in claim 1, characterized in that: At least one of the first light source assembly, the second light source assembly, and the third light source assembly includes at least two parallel outgoing beams; The at least two parallel outgoing beams are spaced apart in the first direction and are guided to the first direction by different elements.

3. The light source system as described in claim 2, characterized in that: The emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly are all spaced apart in the first direction.

4. The light source system as described in claim 1, characterized in that: At least one of the first light source assembly, the second light source assembly, and the third light source assembly includes at least two parallel outgoing beams; The at least two parallel outgoing beams are spaced apart perpendicular to the first direction and guided to the first direction by the same element.

5. A light source system as described in claim 4, characterized in that: The emitted beams of the first light source assembly, the second light source assembly, and the third light source assembly are all distributed at intervals perpendicular to the first direction.

6. A light source system as described in claim 1, characterized in that: The first light source assembly, the second light source assembly, and the third light source assembly each include at least two parallel outgoing beams; The emitted light beams of at least one of the first light source component, the second light source component, and the third light source component are spaced apart in a first direction, and the emitted light beams of the other three light source components are spaced apart perpendicular to the first direction.

7. A light source system as described in claim 6, characterized in that: The emitted beams of the third light source assembly are spaced apart in the first direction; The emitted beams of the first light source assembly and / or the second light source assembly are spaced apart in a direction perpendicular to the first direction.

8. A light source system as described in claim 1, characterized in that: The second and third light source components are arranged in a staggered manner from the first light source component in a first direction.

9. A light source system as described in claim 8, characterized in that: After being guided by the light combining component, the first light source component emits four beams of the first color light; The second light source component emits three or four paths of second-color light after being guided by the light combining component; The third light source component emits two paths of third-color light after being guided by the light combining component; The three second-color lights overlap with three of the first-color lights respectively, or the four second-color lights overlap with the four first-color lights respectively; The two third-color lights overlap with two of the second-color lights.

10. A light source system as described in claim 9, characterized in that: The light spots of the first color light, the second color light, and the third color light are all distributed at intervals perpendicular to the first direction, and the spacing between adjacent light spots is the same.

11. A light source system as described in claim 1 or 8, characterized in that: The first light source assembly includes a first light source unit one, a first light source unit two, a first light source unit three, and a first light source unit four; The second light source sub-assembly one includes a second light source unit one and a second light source unit two, and the second light source sub-assembly two includes a second light source unit three; The third light source assembly includes a third light source unit one and a third light source unit two; When both the second light source sub-assembly one and the second light source sub-assembly two are located on the second side of the first direction, the light combining assembly further includes a reflection assembly; The wavelength combining component includes a first wavelength combining element, a second wavelength combining element, a third wavelength combining element, a fourth wavelength combining element, and a fifth wavelength combining element; The reflective assembly includes a first reflective element, a second reflective element, a third reflective element, and a fourth reflective element; The first wavelength combining element reflects the first color light and transmits the second color light; The second-wavelength light combining element and the third-wavelength light combining element reflect the first color light and transmit the second color light and the third color light; The fourth and fifth wavelength light combining elements reflect the second color light and transmit the third color light.

12. A light source system as described in claim 11, characterized in that: The second light source sub-assembly 2 also includes a second light source unit 4; The wavelength combining component further includes a sixth wavelength combining element; the sixth wavelength combining element reflects the second color light and transmits the first color light.

13. A light source system as described in claim 1, characterized in that: It also includes a first temperature control component and a second temperature control component; the first temperature control component is connected to the first light source component; the second temperature control component is connected to the second light source component and the third light source component.

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