Light source system, modulation method of light source system, and projection device

Abstract

The invention provides a light source system, a modulation method of the light source system and a projection device, the light source system comprises a laser light source, and the laser light source is used for emitting first laser and second laser; the segmented scattering wheel is arranged on the light emitting side of the laser light source, and the segmented scattering wheel can penetrate through the first laser and reflect the second laser; the segmented fluorescent wheel is arranged on a light path of the second laser, and the segmented fluorescent wheel can be excited by the second laser to form fluorescent light; and the light combining element is arranged on a light path of the first laser and the fluorescent light, and the light combining element is used for mixing and outputting the first laser and the fluorescent light. According to the light source system provided by the invention, the speckle problem can be reduced and the film watching comfort can be improved under the condition of keeping high brightness.

Description

Technical Field

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

[0002] In the field of projection display, the light source system is an important part of the projection device. Traditional projection light sources include xenon lamps, ultra-high pressure gas discharge lamps (such as UHP), LED light sources, laser-excited phosphor light sources (LEP), and laser (RGB Laser / single, double, and three-color) light sources. Traditional light bulbs are increasingly not used due to their own defects, while new light sources such as LED light sources, laser-excited phosphor light sources, and pure three-color lasers have shown excellent characteristics in terms of brightness, color, life, energy consumption, etc., and have gradually become the mainstream light sources in the field of projection display.

[0003] However, although laser light sources have the advantages of high brightness and wide color gamut, lasers are also highly coherent and have speckle problems, which will affect the viewing comfort. Summary of the invention

[0004] The embodiments of the present application provide a light source system, a modulation method of the light source system, and a projection device, which can reduce the speckle problem and improve the viewing comfort while maintaining high brightness.

[0005] The present application provides a light source system, including:

[0006] A laser light source, the laser light source is used to emit a first laser and a second laser;

[0007] A segmented scattering wheel, which is arranged on the light-emitting side of the laser light source and can transmit the first laser and reflect the second laser;

[0008] A segmented fluorescent wheel, the segmented fluorescent wheel is arranged on the optical path of the second laser, and the segmented fluorescent wheel can be excited by the second laser to form fluorescence;

[0009] A light combining element is disposed on an optical path of the first laser and the fluorescence, and is used to mix and output the first laser and the fluorescence.

[0010] The present application also provides a modulation method of a light source system, which is applied to the above light source system. The modulation method includes:

[0011] Providing a laser light source and controlling the laser light source to emit a first laser and a second laser;

[0012] Providing a segmented scattering wheel and arranging the segmented scattering wheel on the light-emitting side of the laser light source, wherein the segmented scattering wheel is used to transmit the first laser and reflect the second laser;

[0013] Providing a segmented fluorescent wheel and arranging the segmented fluorescent wheel on the optical path of the second laser, wherein the segmented fluorescent wheel can be excited by the second laser to form fluorescence;

[0014] A light combining element is provided and arranged on the optical path of the first laser and the fluorescence, and the light combining element is used for mixing the first laser and the fluorescence and outputting them.

[0015] An embodiment of the present application further provides a projection device, comprising the above light source system.

[0016] The light source system, the modulation method of the light source system and the projection device provided in the embodiments of the present application have the following advantages: a small number of light sources, only one laser light source is required; the laser light emitted by the laser light source is divided into a first laser and a second laser, and the second laser is used to excite fluorescence, and finally the first laser is mixed with the fluorescence, so that the high brightness brought by the first laser is maintained, and the coherence can be reduced by adding fluorescence mixing, thereby effectively reducing the speckle problem and improving the viewing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of the first type of light source system provided in an embodiment of the present application.

[0019] Figure 2 A schematic diagram of the structure of a segmented scattering wheel provided in an embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of the structure of a segmented fluorescent wheel provided in an embodiment of the present application.

[0021] Figure 4 A schematic diagram of the structure of a beam splitter reflector provided in an embodiment of the present application.

[0022] Figure 5 This is a schematic diagram of the structure of the second light source system provided in an embodiment of the present application.

[0023] Figure 6 A schematic flow chart of a modulation method for a light source system provided in an embodiment of the present application.

[0024] Figure 7 A schematic diagram of the structure of a projection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] In the prior art, although laser light sources have many advantages, their high coherence brings about the speckle problem. The speckle phenomenon will cause the projection image to have a grainy feeling, affecting the viewing comfort and clarity.

[0027] In order to solve this problem, the present application proposes a light source system, a modulation method of the light source system and a projection device, which can reduce the speckle problem and improve the viewing comfort while maintaining high brightness.

[0028] See also Figure 1 , Figure 1 This is a schematic structural diagram of the first type of light source system provided in an embodiment of the present application.

[0029] The embodiment of the present application provides a light source system 10, which includes a laser light source 101, a segmented scattering wheel 102, a segmented fluorescent wheel 103 and a light combining element 104. The laser light source 101 is used to emit a first laser and a second laser. The segmented scattering wheel 102 is arranged on the light-emitting side of the laser light source 101, and the segmented scattering wheel 102 can transmit the first laser and reflect the second laser to ensure that the two lasers can be processed separately to avoid mutual interference. The light combining element 104 is arranged on the optical path of the first laser and the fluorescent light, and the light combining element 104 is used to mix and output the first laser and the fluorescent light.

[0030] Specifically, the light source system 10 of the present application works as follows: the laser light source 101 first emits the first laser and the second laser; then, the segmented scattering wheel 102 performs beam splitting processing on the two lasers, wherein the first laser is directly transmitted and the second laser is reflected; after the reflected second laser encounters the segmented fluorescent wheel 103, it is excited to become fluorescent light; the first laser and the fluorescent light are both guided to the light combining element 104. Finally, the light combining element 104 mixes the two lights together to form a unified output light.

[0031] The light source system 10 provided in the present application has the following characteristics: first, by retaining the high brightness characteristics of the first laser, the brightness requirements of the projection image are ensured; second, by adding fluorescence, the coherence of the overall light source is reduced, the speckle phenomenon is effectively reduced, and the viewing comfort is improved; finally, the design of the segmented scattering wheel 102 and the segmented fluorescent wheel 103 gives the system a high degree of flexibility, enabling it to be flexibly adjusted and optimized according to actual needs.

[0032] See also Figure 2 as well as Figure 3 , Figure 2 A schematic diagram of the structure of a segmented scattering wheel provided in an embodiment of the present application, Figure 3 A schematic diagram of the structure of a segmented fluorescent wheel provided in an embodiment of the present application. In some scenarios, the first laser is a red laser, and the second laser is a blue laser and / or a green laser. For example, when the first laser is a red laser, the second laser can be a blue laser and a green laser. At this time, the segmented scattering wheel 102 rotates to the red-transmitting and anti-blue-green scattering area 1021, and the red laser will directly pass through the segmented scattering wheel 102, while the blue laser and the green laser will be reflected. Subsequently, when the segmented fluorescent wheel 103 rotates to the red fluorescent area 1031, the reflected blue laser and green laser will be excited into red fluorescence. Both the red laser and the red fluorescence are guided to the light combining element 104, and the light combining element 104 mixes the two to form a unified output light.

[0033] In other scenarios, the first laser is a green laser, and the second laser is a red laser and / or a blue laser. For example, when the first laser is a green laser, the second laser can be a red laser and a blue laser. At this time, the segmented scattering wheel 102 rotates to the green-transmitting and red-and-blue-reflecting scattering area 1022, and the green laser will directly pass through the segmented scattering wheel 102, while the red laser and the blue laser will be reflected. Subsequently, when the segmented fluorescent wheel 103 rotates to the green fluorescent area 1032, the reflected red laser and the blue laser will be excited into green fluorescence. Both the green laser and the green fluorescence are guided to the light combining element 104, and the light combining element 104 mixes the two to form a unified output light.

[0034] In the above scenario, the light source system 10 has the advantages mentioned above, and also has the characteristics of rich color difference and high efficiency and energy saving. By mixing red laser and red fluorescence, richer color performance can be produced. At the same time, the high energy efficiency of the laser light source 101 also helps to reduce energy consumption.

[0035] The present application also provides a third scenario, that is, the first laser is a blue laser. In this scenario, the segmented scattering wheel 102 rotates to the blue-transmitting scattering area 1023, and the blue laser directly passes through the segmented scattering wheel 102. Since the blue laser has a shorter wavelength and higher energy, it has unique advantages in the transmission and light-emitting process, so it is usually used directly without going through the fluorescence conversion process. As one of the three primary colors of laser display, the luminescence characteristics of blue laser enable it to be directly used as a light source in system design.

[0036] In the projection display process of some optical systems, the red, green and blue primary color lasers can be set with a fixed emission order and time arrangement. That is, in different time periods, the light source system 10 has and only produces one color of light (laser or a mixture of laser and fluorescent light). By utilizing the time mixing effect of the human eye, the red, green and blue primary color sequential pictures are mixed to present a complete color picture on the screen. Therefore, the optical system can combine the above multiple scenes to form a red, green, blue or other light emission timing design, thereby ensuring color accuracy, picture quality and stability during projection display.

[0037] As mentioned above, the segmented scattering wheel 102 is an optical element whose main function is to split the incident laser beam. The element is usually composed of multiple regions with different scattering characteristics, and each region has a different scattering effect on the laser beam.

[0038] The dispersed scattering wheel includes a red-transmitting, blue-reflecting, green-transmitting scattering region 1021, a green-transmitting, red-reflecting, blue-reflecting scattering region 1022, and a blue-transmitting scattering region 1023. The rotation of the segmented scattering wheel 102 can achieve selective scattering of lasers of different colors. In the laser display system, by precisely controlling the rotation angle and speed of the segmented scattering wheel 102, it can be ensured that lasers of different colors are scattered and transmitted according to a predetermined timing and path, thereby meeting the needs of the display system.

[0039] When the laser is irradiated onto one of the regions (transmitting red and anti-blue and green scattering region 1021, transmitting green and anti-red and blue scattering region 1022 or transmitting blue scattering region 1023) of the segmented scattering wheel 102, it will scatter according to the characteristics of each irradiated region. Each region can be divided into a transmission sub-region and a reflection sub-region. For example, if the first laser is irradiated onto the transmission sub-region, the first laser will directly pass through the transmission sub-region without scattering; if the second laser is irradiated onto the reflection sub-region, the second laser will be reflected by the reflection sub-region, that is, the reflection sub-region can change the propagation direction of the second laser.

[0040] As mentioned above, the segmented fluorescent wheel 103 is another optical element, which is mainly used to convert laser light into fluorescent light. The segmented fluorescent wheel 103 is usually composed of multiple areas coated with different fluorescent substances, and each area will emit fluorescent light of a specific color when excited by laser light.

[0041] The segmented fluorescent wheel 103 includes a red fluorescent area 1031 and a green fluorescent area 1032. The red fluorescent area 1031 can convert green laser and blue laser into red fluorescent light, and the green fluorescent area 1032 can convert red laser and blue laser into green fluorescent light.

[0042] The segmented fluorescent wheel 103 is provided with fluorescent powder to meet the requirements of light type and color conversion. The fluorescent powder can be calcium halophosphate fluorescent powder, rare earth fluorescent powder, silicate fluorescent powder, aluminate fluorescent powder and quantum dot fluorescent powder.

[0043] It is worth noting that the segmented fluorescent wheel 103 may also include a blank area 1033. When the first laser is a blue laser, as described above, the blue laser does not need to be excited into blue fluorescence, so when the first laser light source 101 only emits blue laser (first laser), since there is no second laser, the segmented fluorescent light temporarily does not work, and can be rotated to the blank area 1033. Of course, since there is no second laser, the segmented fluorescent wheel 103 may not be provided with a blank area 1033, and it is only necessary to rotate the segmented fluorescent wheel 103 to any position when the first laser only emits blue laser.

[0044] In the light source system 10 provided in the embodiment of the present application, the segmented fluorescent wheel 103 is used in conjunction with the segmented scattering wheel 102. First, the laser beam is split by the segmented scattering wheel 102, and then a portion of the laser beam is reflected to the segmented fluorescent wheel 103. On the segmented fluorescent wheel 103, the reflected laser beam excites the fluorescent material to emit fluorescence, and the fluorescence is then guided to the subsequent light combining element 104 together with the directly transmitted laser beam for mixing.

[0045] By precisely controlling the rotation angle and speed of the segmented fluorescent wheel 103 and selecting appropriate fluorescent materials, precise control of fluorescent light of different colors can be achieved, thereby meeting the color and brightness requirements of the light source system 10 .

[0046] Please continue reading Figure 1In the above light combining element 104, the light combining element 104 includes a first side surface 1041 and a second side surface 1042 opposite to each other, the first side surface 1041 faces the segmented fluorescent wheel 103, and the second side surface 1042 faces the segmented scattering wheel 102 to receive the fluorescent light and the first laser. The first laser can be output after being reflected on the second side surface 1042. The fluorescent light can be output after being sequentially transmitted through the first side surface 1041 and the second side surface 1042. The function of the light combining element 104 is to combine the light from the two sources to form a composite light, ensuring that they can propagate in the same direction.

[0047] Please continue reading Figure 1 The light source system 10 also includes a laser reflector 105, which is arranged between the segmented scattering wheel 102 and the light combining element 104. The laser reflector 105 can reflect the first laser that passes through the segmented scattering wheel 102 to the second side 1042 of the light combining element 104. The laser reflector 105 helps to achieve precise control and positioning of the first laser, and at the same time helps to save the space occupied by the light source system 10, thereby reducing the overall cost of the light source system 10.

[0048] Please continue reading Figure 1 The light source system 10 also includes a beam splitter reflector 106, which is disposed between the segmented scattering wheel 102 and the segmented fluorescent wheel 103. After the second laser passes through the beam splitter reflector 106, it is reflected by the segmented fluorescent wheel 103 and converted into fluorescence, and the fluorescence is reflected to the light combining element 104 via the beam splitter reflector 106.

[0049] See also Figure 4 , Figure 4 Schematic diagram of the structure of the beam splitter reflector provided in an embodiment of the present application. The beam splitter reflector 106 includes a transparent substrate 1061 and a reflective film 1062, wherein the reflective film 1062 is disposed on one side of the transparent substrate 1061, and a through hole or a regional film layer is disposed on the transparent substrate 1061. The second laser can penetrate the through hole or the regional film layer, and the fluorescence can be reflected by the reflective film 1062.

[0050] When a through hole (referred to as a first through hole) is provided on the transparent substrate 1061, a second through hole is provided on the reflective film 1062, and the first through hole is connected to the second through hole. The second laser can penetrate the first through hole and the second through hole.

[0051] When a regional film layer is provided on the transparent substrate 1061, the regional film layer can be an anti-reflection film to improve the transmittance of the second laser passing through the beam splitter 106. The anti-reflection film is provided on the transparent substrate 1061, and a reflective film 1062 is provided around the anti-reflection film. The light can pass through the transparent substrate 1061 and the anti-reflection film in sequence and enter the segmented fluorescent wheel 103.

[0052] See also Figure 5 , Figure 5 The light source system 10 provided in the embodiment of the present application may further include a first relay lens 107 , a second relay lens 108 , a third relay lens 109 , a light homogenizing element 110 and / or a lens assembly 111 .

[0053] The first relay lens 107 may be disposed between the beam splitting mirror 106 and the light combining element 104 .

[0054] The second relay lens 108 may be disposed between the segmented scattering wheel 102 and the laser reflecting mirror 105 .

[0055] The third relay lens 109 may be disposed on the light emitting side of the light combining element 104 .

[0056] The relay lens can be arranged between various optical elements, and its light expansion effect can be utilized to enhance the stability of light propagation, thereby significantly improving the imaging quality.

[0057] The light homogenizing element 110 may be a micro lens array or a fly-eye lens. The light homogenizing element 110 is disposed on the light-emitting side of the light combining element 104 to achieve high light energy utilization and uniform illumination over a large area.

[0058] The lens assembly 111 may include a plurality of convex lenses arranged in sequence, and the convex lenses are disposed between the segmented fluorescent wheel 103 and the beam splitting reflector 106 , or between the segmented fluorescent wheel 103 and the light combining element 104 , and can converge the divergent fluorescence.

[0059] Please continue reading Figure 1 as well as Figure 6 , Figure 6 A schematic flow chart of a modulation method for a light source system provided in an embodiment of the present application.

[0060] The present application also provides a modulation method of the light source system 10, which is applied to the light source system 10 in the above embodiment. The modulation method includes the following steps.

[0061] S1 . Provide a laser light source 101 and control the laser light source 101 to emit a first laser and a second laser.

[0062] S2, providing a segmented scattering wheel 102 and arranging the segmented scattering wheel 102 on the light-emitting side of the laser light source 101, wherein the segmented scattering wheel 102 is used to transmit the first laser and reflect the second laser;

[0063] S3, providing a segmented fluorescent wheel 103 and arranging the segmented fluorescent wheel 103 on the optical path of the second laser, so that the segmented fluorescent wheel 103 can be excited by the second laser to form fluorescence;

[0064] S4, providing a light combining element 104 and disposing the light combining element 104 on the optical path of the first laser and the fluorescent light, wherein the light combining element 104 is used to mix the first laser and the fluorescent light and output them.

[0065] In some embodiments, when the first laser includes a red laser and the second laser includes a blue laser and / or a green laser; the segmented scattering wheel 102 is rotated to the red-transmitting and anti-blue-green-transmitting scattering area 1021, the red laser is transmitted through the segmented scattering wheel 102, and the blue laser and / or the green laser is reflected by the segmented scattering wheel 102; the segmented fluorescent wheel 103 is rotated to the red fluorescent area 1031, and the blue laser and / or the green laser are excited into red fluorescence via the segmented fluorescent wheel 103.

[0066] In some embodiments, when the first laser includes a green laser and the second laser includes a red laser and / or a blue laser; the segmented scattering wheel 102 is rotated to the green-transmitting and red-and-blue-reflecting scattering area 1022, the green laser is transmitted through the segmented scattering wheel 102, and the red laser and / or the blue laser is reflected from the segmented scattering wheel 102; the segmented fluorescent wheel 103 is rotated to the green fluorescent area 1032, the red laser and / or the blue laser are excited into green fluorescence via the segmented fluorescent wheel 103.

[0067] In some embodiments, when the first laser includes a blue laser, the segmented scattering wheel 102 rotates to the blue-transmitting scattering region 1023 , and the blue laser transmits through the segmented scattering wheel 102 .

[0068] In some scenarios, the laser light source 101 of the light source system 10 can emit red, green and blue lasers, so that the light source system 10 can emit red, green and blue light in sequence, that is, in different time periods, the light source system 10 has and only produces one color of light (laser, or a mixture of laser and fluorescence). Subsequently, the time mixing effect of the human eye is used to mix the red, green and blue primary color sequence pictures, so as to present a complete color picture on the screen. Therefore, the optical system can combine the above-mentioned multiple scenes to form a red, green, blue or other light emission timing design to ensure color accuracy, picture quality and stability during projection display.

[0069] Please continue reading Figure 5When in the red field sequence, the segmented scattering wheel 102 rotates to the red-transmitting and blue-green-reflecting scattering area 1021, and the red laser passes through the segmented scattering wheel 102, passes through the second relay lens 108 for beam integration, and then is reflected by the laser reflector 105 to the light combining element 104 and then enters the light homogenizing element 110. After being homogenized by the light homogenizing element 110, it passes through the third relay lens 109 and enters the imaging display component 20 for projection display; while the blue laser and the green laser are reflected by the segmented scattering wheel 102 and then pass through The beam splitter reflector 106 is passed through the lens assembly 111, and then stimulates the red fluorescent area 1031 on the segmented fluorescent wheel 103 to stimulate red fluorescence. The lens assembly 111 collects the red fluorescence and then it is incident on the beam splitter reflector 106, reflected to the first relay lens 107 for beam shaping, and then passes through the light combining element 104 and is incident on the light homogenizing element 110. After homogenization, it enters the imaging display component 20 through the third relay lens 109 together with the red laser for projection display.

[0070] When in the green field sequence, the segmented scattering wheel 102 rotates to the green-transmitting and red-and-blue-reflecting scattering area 1022, and the green laser passes through the segmented scattering wheel 102, passes through the second relay lens 108 for beam integration, and then is reflected by the laser reflector 105 to the light combining element 104 and then enters the light homogenizing element 110. After being homogenized by the light homogenizing element 110, it passes through the third relay lens 109 and enters the imaging display component 20 for projection display; while the red laser and the blue laser are reflected by the segmented scattering wheel 102 and then pass through The beam splitter reflector 106 is passed through the lens assembly 111, and then stimulates the green fluorescent area 1032 on the segmented fluorescent wheel 103 to stimulate green fluorescence. The lens assembly 111 collects the green fluorescence and then it is incident on the beam splitter reflector 106, reflected to the first relay lens 107 for beam shaping, and then passes through the light combining element 104 and is incident on the light homogenizing element 110. After homogenization, it enters the imaging display component 20 through the third relay lens 109 together with the red laser for projection display.

[0071] When in the blue field sequence, the segmented scattering wheel 102 rotates to the blue-transmitting scattering area 1023, and the blue laser passes through the segmented scattering wheel 102, is integrated by the second relay lens 108, is reflected by the laser reflector 105 to the light combining element 104, and then is incident on the light homogenizing element 110. After being homogenized by the light homogenizing element 110, it enters the imaging display component 20 through the third relay lens 109 for projection display.

[0072] Please continue reading Figure 6 , Figure 7The present application also provides a projection device 100, which includes the light source system 10 in the above embodiment. The projection device 100 also includes an imaging display component 20, and the first laser and the fluorescence are output through the light combining element 104 and then enter the imaging display component 20, thereby realizing image output.

[0073] In the light source system 10, the modulation method of the light source system 10, and the projection device 100 provided in the embodiment of the present application, the light source system 10 includes a laser light source 101, a segmented scattering wheel 102, a segmented fluorescent wheel 103, and a light combining element 104. The laser light source 101 is used to emit a first laser and a second laser. The segmented scattering wheel 102 is arranged on the light-emitting side of the laser light source 101, and the segmented scattering wheel 102 transmits the first laser and reflects the second laser, and the second laser is excited into fluorescence via the segmented fluorescent wheel 103. The first laser and the fluorescence are finally emitted into the light combining element 104, and the light combining element 104 mixes and emits the first laser and the fluorescence. It can be seen that the number of light sources in the light source system 10 provided by the present application is small, which is only the laser light source 101. The laser emitted by the laser light source 101 is divided into the first laser and the second laser, and the second laser is excited into fluorescence, and finally the first laser is mixed with the fluorescence, so that it can not only maintain high brightness due to the first laser, but also add fluorescence for mixing to reduce coherence, thereby reducing the speckle problem and improving the viewing comfort.

[0074] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0076] The light source system, the modulation method of the light source system, and the projection device provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A light source system, characterized in that: include: A laser light source, the laser light source is used to emit a first laser and a second laser; A segmented scattering wheel, which is arranged on the light-emitting side of the laser light source and can transmit the first laser and reflect the second laser; A segmented fluorescent wheel, the segmented fluorescent wheel is arranged on the optical path of the second laser, and the segmented fluorescent wheel can be excited by the second laser to form fluorescence; A light combining element is disposed on an optical path of the first laser and the fluorescence, and is used to mix and output the first laser and the fluorescence.

2. The light source system according to claim 1, characterized in that: The first laser includes a red laser, and the second laser includes a blue laser and / or a green laser; or, the first laser includes a green laser, and the second laser includes a red laser and / or a blue laser; or, the first laser includes a blue laser.

3. The light source system according to claim 1 or 2, characterized in that: The segmented scattering wheel includes a red-transmitting and blue-green-reflecting scattering area, a green-transmitting and red-blue-reflecting scattering area, and a blue-transmitting scattering area; the segmented fluorescent wheel includes a red fluorescent area and a green fluorescent area.

4. The light source system according to claim 1 or 2, characterized in that: The light combining element includes a first side and a second side facing each other, the first side faces the segmented fluorescent wheel, and the second side faces the segmented scattering wheel. The first laser can be output after being reflected on the second side, and the fluorescence can be output after being transmitted through the first side and the second side in sequence.

5. The light source system according to claim 4, characterized in that: It also includes a laser reflection mirror, which is arranged between the segmented scattering wheel and the light combining element, and can reflect the first laser that passes through the segmented scattering wheel to the second side surface of the light combining element.

6. A modulation method of a light source system, characterized in that: Applied to the light source system according to any one of claims 1 to 5, the modulation method comprises: Providing a laser light source and controlling the laser light source to emit a first laser and a second laser; Providing a segmented scattering wheel and arranging the segmented scattering wheel on the light-emitting side of the laser light source, wherein the segmented scattering wheel is used to transmit the first laser and reflect the second laser; Providing a segmented fluorescent wheel and arranging the segmented fluorescent wheel on the optical path of the second laser, wherein the segmented fluorescent wheel can be excited by the second laser to form fluorescence; A light combining element is provided and arranged on the optical path of the first laser and the fluorescence, and the light combining element is used for mixing the first laser and the fluorescence and outputting them.

7. The modulation method of the light source system according to claim 6, characterized in that: When the first laser includes a red laser, and the second laser includes a blue laser and / or a green laser; The segmented scattering wheel is rotated to a red-transmitting and blue-green-reflecting scattering area, the red laser light is transmitted through the segmented scattering wheel, and the blue laser light and / or the green laser light are reflected from the segmented scattering wheel; The segmented fluorescence wheel is rotated to a red fluorescence area, and the blue laser and / or the green laser are excited into red fluorescence via the segmented fluorescence wheel.

8. The modulation method of the light source system according to claim 6, characterized in that: Also includes: When the first laser includes a green laser, and the second laser includes a red laser and / or a blue laser; The segmented scattering wheel is rotated to a green-transmitting and red-and-blue-reflecting scattering area, so that the green laser light passes through the segmented scattering wheel, and the red laser light and / or the blue laser light are reflected by the segmented scattering wheel; The segmented fluorescence wheel is rotated to a green fluorescence area, and the red laser and / or the blue laser are excited to become green fluorescence via the segmented fluorescence wheel.

9. The modulation method of the light source system according to claim 6, characterized in that: When the first laser includes a blue laser, the segmented scattering wheel rotates to a blue-transmitting scattering region, and the blue laser transmits through the segmented scattering wheel.

10. A projection device, characterized in that: A light source system comprising any one of claims 1 to 5.

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