Light source device and head-up display system
By designing a plastic shaping device in a laser projection optical machine to shape the light, the problem of unbalanced optical expansion amount of MCP laser is solved, effective coupling of light and reduced volume of optical machine is achieved, making it convenient for on-board applications.
Patent Information
- Application Number
- CN202421561651.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In existing laser projection optical machines, the structure and packaging process of the MCP laser lead to an imbalance in the optical expansion amount, making it difficult to effectively couple the laser fiber, affecting the volume and cost of the projector.
By designing a light source device, the shaping device is used to reflect the light emitted by the light emitting chip at least once in the XYZ direction, so that the slow axis direction and fast axis direction of the light rays are shaped to form light arranged in the fast axis direction, so as to facilitate coupling into the optical fiber.
It realizes effective shaping and coupling of light, reduces the volume of the optical machine, facilitates application in environments such as on-board vehicles, and reduces maintenance costs.
Smart Images
Figure CN222704882U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of light source equipment, and in particular to a light source device and a head-up display system. Background Art
[0002] With the development of the projection display industry, more and more companies are using pure laser as a projection light source. Compared with traditional LED light sources, pure laser light sources have higher brightness than LED light sources, can provide brighter and clearer images, and have higher energy efficiency than LED light sources, which can save more energy. Pure laser light sources have a longer life than LED light sources, can provide longer service life and lower maintenance costs; can emit purer colors, have a wide color gamut coverage, and can provide brighter and more realistic colors. In general, projectors using pure laser light sources have obvious advantages in image quality, life, energy efficiency, volume, and stability.
[0003] In addition to the advantages of the light source itself, the solution of coupling the three-color laser into the optical fiber can fundamentally reduce the size of the projector. That is, the light source is completely independent of the whole machine, and through the length of the optical fiber, the light source part can be placed in the car without affecting the vacant area, greatly reducing the size of the projection part of the optical machine.
[0004] In laser projection optical machines, existing new technologies use optical fibers to propagate and shape lasers. MCP lasers are often used in laser projection to reduce size and cost. Due to the structure and packaging process of the laser, MCP lasers are usually arranged along the slow axis, which causes the optical expansion of the laser in the slow axis direction to be much larger than the optical expansion in the fast axis direction. However, the expansion of existing optical fibers is usually very small, and it is difficult for lasers to be fully coupled into the optical fibers. Therefore, how to convert the expansion of the fast and slow axes of the laser optical path is of great significance to achieving efficient coupling of optical fibers. Utility Model Content
[0005] The embodiments of the present application provide a light source device and a head-up display system to at least partially improve the above technical problems.
[0006] In a first aspect, an embodiment of the present application provides a light source device, including a light source, a shaping device, and a light emitting unit, wherein the light source includes a plurality of light emitting chips arranged side by side along the X direction, and the light emitting chip is used to emit light along the Y direction. The shaping device is used to reflect the light emitted by each light emitting chip at least once in the XYZ direction in space, so that the light is shaped to be arranged along the fast axis direction of the light emitting chip, the X direction, the Y direction, and the Z direction are perpendicular to each other, the X direction is the slow axis direction of the light emitting chip, and the Z direction is the fast axis direction of the light emitting chip, and the light emitting unit is used to combine the light shaped by the shaping device and then emit it.
[0007] In one embodiment, the shaping device is used to guide the light emitted by each light-emitting chip to be transmitted into the light-emitting portion along different paths.
[0008] In one embodiment, the shaping device is configured to receive the light, reflect it toward the X direction, reflect it toward the Z direction again, and then reflect it toward the Y direction to the light exiting portion.
[0009] In one embodiment, the shaping device includes a first diaphragm, a second diaphragm, a third diaphragm and a plurality of reflective members for reflecting light, wherein the first diaphragm, the second diaphragm and the third diaphragm are each provided with one or more transmission areas and one or more reflection areas, wherein the reflection areas are used to reflect light and the transmission areas are used to transmit light;
[0010] The light source comprises a plurality of red light emitting chips, and the first membrane, the second membrane and the third membrane are used to make the light emitted by the plurality of red light emitting chips be conducted along different paths.
[0011] In one embodiment, the light source includes a first red light emitting chip, a second red light emitting chip, a third red light emitting chip, and a fourth red light emitting chip;
[0012] The light emitted by the first red light emitting chip is reflected by the first film toward the X direction, passes through the third film, is reflected by the reflector toward the Z direction, and then is reflected toward the Y direction to the light emitting portion;
[0013] The light emitted by the second red light emitting chip passes through the first film, is reflected by the second film toward the X direction, is then reflected by the reflector toward the Z direction, and is then reflected toward the Y direction to the light emitting portion;
[0014] The light emitted by the third red light emitting chip is reflected by the first film toward the X direction, passes through the third film, is reflected by the reflector toward the Z direction, and then is reflected toward the Y direction to the light emitting portion;
[0015] The light emitted by the fourth red light emitting chip passes through the first film and the second film, is reflected by the reflector toward the X direction, is then reflected by the reflector toward the Z direction, and is then reflected toward the Y direction to the light emitting portion.
[0016] In one embodiment, the light source also includes a blue light emitting chip and / or a green light emitting chip, and the shaping device also includes a light combining plate, which can reflect red light and transmit blue light or green light. The first membrane, the second membrane, the third membrane and the light combining plate are also used to make the light emitted by the blue light emitting chip and / or the green light emitting chip be transmitted along different paths.
[0017] In one embodiment, the light source includes a first green light emitting chip, a second green light emitting chip, and a third green light emitting chip;
[0018] The light emitted by the first green light emitting chip is reflected by the first film toward the X direction, passes through the third film, is reflected by the reflector toward the Z direction, and then is reflected toward the Y direction to the light emitting portion;
[0019] The light emitted by the second green light emitting chip is reflected by the first film toward the X direction, and then is reflected multiple times by the third film and the reflector to the light emitting portion;
[0020] The light emitted by the third green light emitting chip is reflected by the first film toward the X direction, then reflected by the third film toward the Z direction, and then reflected by the reflector toward the Y direction, and then passes through the light combining sheet to the light emitting portion.
[0021] In one embodiment, the light source includes a first blue light emitting chip and a second blue light emitting chip;
[0022] The light emitted by the first blue light emitting chip is reflected by the first film toward the X direction, and then is reflected multiple times by the third film and the reflector to the light emitting portion;
[0023] The light emitted by the second blue light emitting chip is reflected by the first film toward the X direction, then reflected by the third film toward the Z direction, and then reflected by the reflector toward the Y direction and then passes through the light combining sheet to the light emitting portion.
[0024] In one embodiment, the blue light emitting chip and the green light emitting chip are arranged side by side along the X direction.
[0025] In a second aspect, an embodiment of the present application further provides a head-up display system, comprising the above-mentioned light source device.
[0026] The light source device and head-up display system provided in the embodiments of the present application reflect the light emitted by the light-emitting chip at least once along the XYZ direction through a shaping device, so that the slow axis direction and the fast axis direction of the light are shaped during the transmission process, and the light entering the light output part is arranged along the fast axis direction, which is convenient for the subsequent coupling of the light emitted by the light source device into the optical fiber, so that the head-up display system using the above-mentioned light source device can reduce the size of the optical machine and the light source device, and is convenient for application in environments such as vehicles. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0028] Figure 1 A light path diagram of a head-up display system provided in an embodiment of the present application.
[0029] Figure 2 A schematic diagram of the structure of a light source device in a head-up display system provided in an embodiment of the present application.
[0030] Figure 3 A schematic structural diagram of a first diaphragm of a light source device provided in an embodiment of the present application.
[0031] Figure 4 A schematic diagram of the structure of the second membrane of the light source device provided in an embodiment of the present application.
[0032] Figure 5 A schematic structural diagram of the third membrane of the light source device provided in an embodiment of the present application.
[0033] Figure 6 This is a light path diagram of the red light emitting chip in the light source device provided in an embodiment of the present application.
[0034] Figure 7 This is a light path diagram of the green light emitting chip in the light source device provided in an embodiment of the present application.
[0035] Figure 8 This is a light path diagram of the blue light emitting chip in the light source device provided in an embodiment of the present application.
[0036] Fig. 9 This is a distribution diagram of light after being shaped by a shaping device in the light source device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0037] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is only a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by those skilled in the art without making creative work are within the scope of protection of the present application.
[0038] In this application, unless otherwise clearly specified or limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements, or it can be only surface contact, or surface contact connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0039] In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as specific or special structures. The descriptions of the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0040] Example
[0041] See also Figure 1 The present embodiment provides a head-up display system 1, including a light source device 10 and an optical machine 2, wherein the light source device 10 is used to emit illumination light and couple it into the optical machine 2 to form image light, wherein the illumination light emitted by the light source device 10 can be coupled into the optical machine 2 by coupling into an optical fiber, and the image light emitted by the optical machine 2 can be projected onto a location such as a windshield of a vehicle.
[0042] Specifically, see Figure 2 The light source device 10 includes a light source 100, a shaping device 200 and a light emitting unit 300. The light source 100 may be a laser light source for emitting light, the shaping device 200 is used to shape the fast and slow axis directions of the light, and the light emitting unit 300 is used to gather the shaped light and emit it outward.
[0043] Specifically, the light source 100 includes a plurality of light emitting chips arranged side by side along the X direction, and the light emitting chip may be a laser chip for emitting laser as the emitted light. In this embodiment, the light source 100 includes a plurality of red light emitting chips, and the plurality of red light emitting chips are arranged side by side along the X direction, and the X direction is the slow axis direction of the light emitting chip. The light emitted from the light source 100 shows that the expansion amount in the slow axis direction is significantly greater than the expansion amount in the fast axis direction (i.e., the Z direction in the figure).
[0044] Specifically in this embodiment, the light source 100 includes a first red light emitting chip, a second red light emitting chip, a third red light emitting chip and a fourth red light emitting chip, and the first red light emitting chip, the second red light emitting chip, the third red light emitting chip and the fourth red light emitting chip are arranged side by side along the X direction. In some other implementations, the light source 100 also includes a blue light emitting chip and / or a green light emitting chip, which is not limited in this embodiment.
[0045] In this embodiment, the light source 100 also includes a blue light emitting chip and a green light emitting chip. Specifically, the light source 100 includes a first green light emitting chip, a second green light emitting chip, a third green light emitting chip, a first blue light emitting chip and a second blue light emitting chip. The first green light emitting chip, the second green light emitting chip, the third green light emitting chip, the first blue light emitting chip and the second blue light emitting chip are sequentially arranged side by side along the X direction, and the column formed by the first green light emitting chip, the second green light emitting chip, the third green light emitting chip, the first blue light emitting chip and the second blue light emitting chip is side by side with the column formed by the first red light emitting chip, the second red light emitting chip, the third red light emitting chip and the fourth red light emitting chip.
[0046] The shaping device 200 is used to reflect the light emitted by each light emitting chip at least once in the XYZ direction in space, so that the light is shaped to be arranged along the fast axis direction of the light emitting chip. The X direction, the Y direction and the Z direction are perpendicular to each other to form a spatial rectangular coordinate system, the X direction is the slow axis direction of the light emitting chip, and the Z direction is the fast axis direction of the light emitting chip.
[0047] In the process of the shaping device 200 reflecting the light emitted by the light emitting chip, the expansion amount of the light is modified by the deviation of the shaping device 200, so that the expansion amount of the light in the slow axis direction is compressed and the expansion amount in the fast axis direction is amplified, thereby making the expansion amount of the light after passing through the shaping device 200 compressed in the slow axis direction and amplified in the fast axis direction. The optical expansion amount distribution in the fast and slow axis directions of different color lasers is balanced and overlapped, which is conducive to the coupling of laser projection equipment.
[0048] Since there are multiple light-emitting chips, in order to avoid the light from different light-emitting chips from overlapping during the light propagation process, which leads to a larger expansion amount (i.e., a larger light spot), a better setting method is: the shaping device 200 is configured to guide the light emitted by each light-emitting chip to be transmitted along different paths into the light-emitting portion 300. In this way, it can avoid the partial overlap or overlap of adjacent light during the transmission process.
[0049] In some embodiments, the shaping device 200 is configured to receive light, and after reflecting it toward the X direction, reflect it toward the Z direction again, and then reflect it toward the Y direction to the light emitting portion 300. In this process, the light is emitted from the light emitting chip toward the Y direction, reflected toward the X direction by the shaping device 200, the expansion amount in the slow axis direction is compressed, and then reflected toward the Z direction. At this time, the expansion amount in the slow axis direction and the fast axis direction alternate, and at this time, compared with the initial light, the expansion amount in the fast axis direction is expanded, while the expansion amount in the slow axis direction is compressed, and finally emitted toward the Y direction to form illumination light.
[0050] It can be understood that the present embodiment does not limit the order in which the shaping device 200 deflects the light. In other implementations, the shaping device 200 may also deflect the light in other orders.
[0051] In this embodiment, please refer to Figure 2-Figure 5 The shaping device 200 includes a first film 210, a second film 220, a third film 230 and a plurality of reflective members for reflecting light. The first film 210, the second film 220 and the third film 230 are all provided with one or more transmission areas 212 and one or more reflection areas 211. The reflection area 211 is used to reflect light, and the transmission area 212 is used to transmit light. The reflection area 211 and the transmission area 212 can be arranged in any manner. In one embodiment, the reflection area 211 and the transmission area 212 can be arranged alternately. This embodiment can make the light emitted by adjacent light-emitting chips propagate along different paths in the reflection area 211 and the transmission area 212, thereby avoiding the overlap of the light emitted by adjacent light-emitting chips.
[0052] Specifically, see Figure 3 , the first film 210 includes a first area and a second area, the first area is provided with two transmission areas 212 and two reflection areas 211, and the two transmission areas 212 and the two reflection areas 211 are alternately arranged, and the first area 213 is arranged in a one-to-one correspondence with the first red light emitting chip, the second red light emitting chip, the third red light emitting chip, and the fourth red light emitting chip. The second area 214 is all transmission area 212, and the second area 214 corresponds to the first green light emitting chip, the second green light emitting chip, the third green light emitting chip, the first blue light emitting chip, and the second blue light emitting chip. That is, the light emitted by the first green light emitting chip, the second green light emitting chip, the third green light emitting chip, the first blue light emitting chip, and the second blue light emitting chip can all pass through the second area 214 of the first film 210.
[0053] See also Figure 4 The second film 220 includes a reflective region 211 and a transmissive region 212. Figure 5 The third film 230 includes two reflective areas 211 and three transmissive areas 212, which are alternately arranged, and transmissive areas 212 are arranged on both sides of each reflective area 211. With the light source 100 as the origin, the first film 210 is arranged on the light output path of the light source 100 and is located in the +Y direction of the light source 100, and is approximately 45° with the optical axis direction (Y direction) of the light. The second film 220 is arranged in the +Y direction of the first film 210, and the third film 230 is arranged in the +X direction of the first film 210.
[0054] Please refer again Figure 2 The reflector is used to reflect light. In this embodiment, the number of reflectors is multiple. Specifically, the multiple reflectors include reflectors 241, 242, 243, 244, 245, 246, 247, 248, 249, and 2410. These reflectors 24 can all adopt a planar diaphragm structure to reduce the volume of the shaping device 200.
[0055] In addition, in this embodiment, the shaping device 200 further includes a light combining plate 250 , which can reflect red light and transmit blue light and green light.
[0056] Specifically, in this embodiment, the path of the light emitted by each light emitting chip is as follows:
[0057] like Figure 6 As shown, the light emitted by the first red light emitting chip is reflected by the first film 210 toward the +X direction, enters the third film 230 and passes through the third film 230, then is reflected by the reflector 246 toward the +Z direction, and then is reflected by the reflector 249 toward the Y direction to the light emitting portion 300.
[0058] The light emitted by the second red light emitting chip passes through the transmission area 212 of the first film 210, propagates toward the +Y direction, is reflected toward the +X direction by the reflection area 211 of the second film 220, is then reflected toward the +Z direction by the reflection element 245, and is then reflected toward the +Y direction by the reflection element 2410 to the light emitting portion 300.
[0059] The light emitted by the third red light emitting chip is reflected by the first film 210 toward the +X direction, passes through the third film 230 , is reflected by the reflector 244 toward the +Z direction, and is then reflected by the reflector 248 toward the +Y direction to the light emitting portion 300 .
[0060] The light emitted by the fourth red light emitting chip passes through the first film 210 and the second film 220 , is reflected by the reflector 241 toward the +X direction, then by the reflector 242 toward the +Z direction, and then by the light combining plate 250 toward the +Y direction to the light emitting portion 300 .
[0061] The light emitted by the first red light emitting chip, the second red light emitting chip, the third red light emitting chip and the fourth red light emitting chip enters the light emitting portion 300 along different paths, and the light emitted by adjacent red light emitting chips is staggered to avoid overlapping of light spots.
[0062] See also Figure 7The light emitted by the first green light emitting chip is reflected by the first film 210 toward the +X direction, passes through the third film 230, is reflected by the reflector 246 toward the +Z direction, and is then reflected by the reflector 249 toward the +Y direction to the light emitting portion 300; the light emitted by the first green light emitting chip is superimposed with the light emitted by the first red light emitting chip at the light emitting portion 300.
[0063] The light emitted by the second green light emitting chip is reflected by the first film 210 toward the +X direction, then reflected by the third film 230 toward the +Z direction, and then reflected multiple times by the reflective element 244 and the reflective element 248 to the light emitting portion 300; the light emitted by the second green light emitting chip and the light emitted by the third red light emitting chip are superimposed at the light emitting portion 300.
[0064] The light emitted by the third green light emitting chip is reflected by the first film 210 toward the +X direction, then reflected by the third film 230 toward the +Z direction, and then reflected by the reflector 247 toward the Y direction and then passes through the light combining sheet 250 to the light emitting portion 300. The light emitted by the third green light emitting chip and the light emitted by the fourth red light emitting chip are superimposed at the light emitting portion 300.
[0065] The light emitted by the first green light emitting chip, the second green light emitting chip and the third green light emitting chip enters the light emitting portion 300 along different paths, and the light emitted by adjacent green light emitting chips is staggered to avoid overlapping of light spots.
[0066] like Figure 8 As shown, the light emitted by the first blue light emitting chip is reflected by the first film 210 toward the +X direction, then reflected by the third film 230 toward the +Z direction, and then reflected by the reflective member 243, the reflective member 246, and the reflective member 249 to the light emitting portion 300. The light emitted by the first blue light emitting chip and the light emitted by the first red light emitting chip are superimposed at the light emitting portion 300.
[0067] The light emitted by the second blue light emitting chip is reflected by the first film 210 toward the +X direction, then reflected by the third film 230 toward the +Z direction, and then reflected by the reflector 247 toward the Y direction and then passes through the light combining sheet 250 to the light emitting portion 300. The light emitted by the second blue light emitting chip and the light emitted by the third red light emitting chip are superimposed at the light emitting portion 300.
[0068] The light emitted by the first blue light emitting chip and the second blue light emitting chip enters the light emitting portion 300 along different paths, and the light emitted by adjacent blue light emitting chips is staggered to avoid overlapping of light spots.
[0069] The shaping device 200 in this embodiment, the first diaphragm 210, the second diaphragm 220, the third diaphragm 230, the reflector 24 and the light combining plate 250 all adopt a diaphragm structure, which on the one hand reduces the volume of the entire shaping device 200, and on the other hand allows the light emitted by adjacent light-emitting chips to be offset from each other to avoid the overlap of adjacent light spots. At the same time, only the principles of reflection and refraction are used to rearrange the expansion amount of the three-color laser, so that the arrangement of the blue-green laser and the red laser is the same. It can be understood that this embodiment does not limit the specific setting method of the shaping device 200. In some other embodiments, the shaping device 200 can also be configured in other forms.
[0070] The light emitting unit 300 may be a lens or a lens group, a light rod or other optical element, which is not limited here. The light emitting unit 300 is used to combine the light shaped by the shaping device 200 and then emit it. Fig. 9 The distribution diagram of the light after the light output unit 300 combines the light is shown. Fig. 9 It can be seen that before the light enters the shaping device 200 , the expansion amount of the light is arranged along the slow axis direction. After passing through the shaping device 200 , the expansion amount of the light is arranged along the fast axis direction, and the light from different light-emitting chips is correspondingly superimposed at the light output portion 300 .
[0071] The light source device 10 and the head-up display system 1 provided in the present embodiment reflect the light emitted by the light emitting chip at least once along the XYZ direction through the shaping device 200, so that the slow axis direction and the fast axis direction of the light are shaped during the transmission process, and the light entering the light output portion 300 is arranged along the fast axis direction, which is convenient for the subsequent coupling of the light emitted by the light source device 10 into the optical fiber, so that the head-up display system 1 using the above-mentioned light source device 10 can reduce the volume of the optical machine 2 and the light source device 10, and the optical machine 2 can be used in an automotive environment.
[0072] The above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the present application, and should all be included in the protection scope of the present application.
Claims
1. A light source device, characterized in that: include: A light source, the light source comprising a plurality of light emitting chips arranged side by side along the X direction, the light emitting chips being used to emit light along the Y direction; A shaping device, the shaping device is used to reflect the light emitted by each light emitting chip at least once in the XYZ direction in space, so that the light is shaped to be arranged along the fast axis direction of the light emitting chip, the X direction, the Y direction and the Z direction are perpendicular to each other, the X direction is the slow axis direction of the light emitting chip, and the Z direction is the fast axis direction of the light emitting chip; as well as The light emitting part is used to combine the light shaped by the shaping device and then emit it.
2. The light source device according to claim 1, characterized in that: The shaping device is used to guide the light emitted by each light-emitting chip to be transmitted into the light-emitting portion along different paths.
3. The light source device according to claim 2, characterized in that: The shaping device is configured to receive the light, reflect it toward the X direction, reflect it toward the Z direction again, and then reflect it toward the Y direction to the light emitting portion.
4. The light source device according to claim 2, characterized in that: The shaping device comprises a first diaphragm, a second diaphragm, a third diaphragm and a plurality of reflective members for reflecting light, wherein the first diaphragm, the second diaphragm and the third diaphragm are each provided with one or more transmission areas and one or more reflection areas, wherein the reflection area is used to reflect light and the transmission area is used to transmit light; The light source includes a plurality of red light emitting chips, and the first film, the second film and the third film are used to transmit the light emitted by the plurality of red light emitting chips along different paths.
5. The light source device according to claim 4, characterized in that: The light source includes a first red light emitting chip, a second red light emitting chip, a third red light emitting chip and a fourth red light emitting chip; The light emitted by the first red light emitting chip is reflected by the first film toward the X direction, passes through the third film, is reflected by the reflector toward the Z direction, and then is reflected toward the Y direction to the light emitting portion; After the light emitted by the second red light emitting chip passes through the first film, it is reflected by the second film toward the X direction, then reflected by the reflector toward the Z direction, and then reflected toward the Y direction to the light emitting portion; The light emitted by the third red light emitting chip is reflected by the first film toward the X direction, passes through the third film, is reflected by the reflector toward the Z direction, and then is reflected toward the Y direction to the light emitting portion; The light emitted by the fourth red light emitting chip passes through the first film and the second film, is reflected by the reflector toward the X direction, is then reflected by the reflector toward the Z direction, and is then reflected toward the Y direction to the light emitting portion.
6. The light source device according to claim 4 or 5, characterized in that: The light source also includes a blue light emitting chip and / or a green light emitting chip, and the shaping device also includes a light combining plate, which can reflect red light and transmit blue light or green light. The first membrane, the second membrane, the third membrane and the light combining plate are also used to make the light emitted by the blue light emitting chip and / or the green light emitting chip be transmitted along different paths.
7. The light source device according to claim 6, characterized in that: The light source includes a first green light emitting chip, a second green light emitting chip and a third green light emitting chip; The light emitted by the first green light emitting chip is reflected by the first film toward the X direction, passes through the third film, is reflected by the reflector toward the Z direction, and then is reflected toward the Y direction to the light emitting portion; The light emitted by the second green light emitting chip is reflected by the first film toward the X direction, and then is reflected multiple times by the third film and the reflector to the light emitting portion; The light emitted by the third green light emitting chip is reflected by the first film toward the X direction, then reflected by the third film toward the Z direction, and then reflected by the reflector toward the Y direction before passing through the light combining sheet to the light emitting portion.
8. The light source device according to claim 6, characterized in that: The light source includes a first blue light emitting chip and a second blue light emitting chip; The light emitted by the first blue light emitting chip is reflected by the first film toward the X direction, and then is reflected multiple times by the third film and the reflector to the light emitting portion; The light emitted by the second blue light emitting chip is reflected by the first film toward the X direction, then reflected by the third film toward the Z direction, and then reflected by the reflector toward the Y direction before passing through the light combining sheet to the light emitting portion.
9. The light source device according to claim 6, characterized in that: The blue light emitting chip and the green light emitting chip are arranged side by side along the X direction.
10. A head-up display system, characterized in that: Comprising the light source device as described in any one of claims 1-9.