Light source system

Abstract

The utility model relates to the technical field of projection optical systems, in particular to a light source system which comprises a first light source, a light splitting element and a wavelength conversion assembly, the light splitting element is provided with a reflecting area and a transmitting area, and the light splitting element moves dynamically to enable the reflecting area and the transmitting area to be sequentially switched to an emergent light path of the first light source. The light emitted by the first light source is sequentially switched between generating fluorescent light by irradiating the wavelength conversion assembly and outputting combined light. The light source system can efficiently utilize the light emitted by the first light source, improve the utilization rate of the light source, reduce the length of a light path through which the light emitted by the first light source serving as a component of a combined light beam passes, reduce the number of passing elements, reduce the light loss, improve the utilization rate of the first light source, reduce the loss of the first light source during light combination, and improve the quality of the light source. Meanwhile, a blue light path and a fluorescent light path are separated, residual blue light in fluorescent light can be filtered on the fluorescent light path, the system color gamut is improved, and the projection light emitting brightness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection optical systems, in particular to a light source system. Background Art

[0002] At present, home projectors on the market often use lasers as light sources. Laser light sources have high brightness, good color, high image levels and long life. However, laser light sources have uneven light field distribution, and due to the high coherence of lasers, speckle will appear after reflection on the projection surface, affecting the presentation of the projected image. The hybrid light source system that combines laser light sources with wide-spectrum light sources can combine the advantages of each light source and reduce speckle. However, the existing hybrid light source system has low utilization of light sources, high power consumption and low light efficiency. The green color in the fluorescent light path is poor. When it is on the same light path as blue light, the short-wave part of the green fluorescence cannot be filtered, and the color point cannot be improved to 100% DCIP3 coverage. In addition, the blue light path reaches the fluorescent wheel and then reflects, and passes through many lenses, resulting in a large loss of blue light and light efficiency. Utility Model Content

[0003] The technical problem to be solved and the technical task proposed by the utility model are to improve the existing technology and provide a light source system to solve the problems of low utilization rate of light sources, high power consumption and low light efficiency of the light source system in the current technology.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A light source system comprises a light source one, a beam splitter, a wavelength conversion component and a light combining component, wherein the beam splitter is provided with a reflection area and a transmission area, and the beam splitter moves dynamically so that the reflection area and the transmission area are switched to the output light path of the light source one in a timely manner, the light emitted by the light source one is reflected by the reflection area and guided to the light path one, and the light emitted by the light source one is transmitted from the transmission area to the light path two, and the wavelength conversion component is arranged on the light path of one of the light path one and the light path two, and the wavelength conversion component is excited to generate fluorescence by being irradiated by the light emitted by the light source one, and the fluorescence is combined with the light emitted by the light source one propagating along the other of the light path one and the light path two through the light combining component and output. In the light source system described in the present invention, the light emitted by the light source one is used as an excitation source for fluorescence excitation and directly as a component of the combined light output by a spectroscopic element in a time-sharing manner, so that the light emitted by the light source one is efficiently used and the utilization rate of the light source is improved. The light source system described in the present invention adopts a time-sequential light combining method, which means that within a frame, different colored lights are successively lit up for light combining, that is, the fluorescence and the light emitted by the light source one as components of the combined light beam are emitted in a time-sharing manner. In the prior art, the light emitted by the light source one as a component of the combined light beam is usually formed by a reflection area or a transmission area set on a wavelength conversion component, so that the optical path is long, the light passes through many components, resulting in large light loss, reducing the utilization rate of the light source one, and affecting the brightness of the light output. The present invention uses a spectroscopic element to guide the light emitted by the light source one to different optical paths in a time-sequential manner, which can reduce the length of the optical path passed by the light emitted by the light source one as a component of the combined light beam, reduce the number of components passed through, reduce light loss, improve the utilization rate of the light source one, and improve the brightness of the projected light.

[0006] Furthermore, it also includes a second light source, wherein the light emitted by the second light source has a different color from the light emitted by the first light source;

[0007] The light emitted by the second light source is processed by the dissipation element and then emitted to the light combining component for combined emission, and / or a polarization conversion element is provided on the optical path of the light emitted by the second light source to the light combining component, and the polarization conversion element performs phase shift on a part of the light emitted by the second light source. The light emitted by the second light source is combined and emitted, and the brightness of the corresponding color light in the combined light beam is increased. In order to reduce speckle, a dissipation element or a polarization conversion element is used to reduce the coherence of the light, effectively suppress speckle, and improve the light emission quality.

[0008] Furthermore, the dissipation element and the wavelength conversion component are connected as an integral part, the integral part rotates dynamically, the dissipation element is distributed on the radial inner side or outer side of the wavelength conversion component, or the dissipation element and the wavelength conversion component are arranged in zones in the rotation circumferential direction. The structure is compact, only one motor is needed for driving, the cost is reduced, and the occupied space is reduced.

[0009] Further, at least one of light source 2 and light source 3 is included, light source 2 is a laser light source, light source 3 is an LED light source, light emitted by light source 2 and light source 3 is different in color from light emitted by light source 1, light emitted by light source 3 is the same color as light emitted by light source 2 but has a different wavelength, and light emitted by light source 3 and light emitted by light source 2 are emitted to a light combining component. By combining the advantages of multiple light sources, low power consumption, high light efficiency, high color gamut, and low implementation cost are achieved.

[0010] Furthermore, the transmission area is provided with a diffusion layer to diffuse the light emitted by the light source 1 passing through the transmission area, thereby reducing the coherence, thereby effectively suppressing speckle, improving the light output quality, and enhancing the projection picture quality.

[0011] Furthermore, a filter layer is provided on the wavelength conversion component, and the wavelength range of the fluorescence generated by excitation is wide. The filter layer is used to filter the fluorescence to improve the color purity and achieve a high color gamut.

[0012] Furthermore, a filter device is provided on the fluorescence output light path of the wavelength conversion component, and the filter device includes a filter element 1, and the filter element 1 is provided on the fluorescence output light path, and the filter element 1 is placed statically or switched between being on the fluorescence output light path and being moved out of the fluorescence output light path. When high brightness and low color gamut are required, the filter element 1 is moved out of the fluorescence output light path, and when high color gamut is required, the filter element 1 is on the fluorescence output light path, so as to flexibly meet different needs.

[0013] Furthermore, the filter device includes a second filter element, which is fixedly arranged on the fluorescence emission light path. The first filter element cooperates with the second filter element, and the second filter element always filters the fluorescence to improve the color purity and ensure that the color gamut meets the basic requirements, while the movement and switching of the first filter element further performs selective filtering to achieve the switching of high and low color gamuts.

[0014] Furthermore, a guiding element is also provided on the optical path from the light splitting element to the wavelength conversion component. The guiding element is provided with an opening for the light emitted by the light source 1 to pass through and then obliquely enter the wavelength conversion component. The guiding element reflects and guides the fluorescence generated by the wavelength conversion component to the light combining component. The guiding element is a reflective sheet or a dichroic sheet that transmits the light emitted by the light source 1 and reflects the fluorescence. The structure is simple and easy to implement. The light emitted by the light source 1 passes directly through the opening, so there is no loss of penetrating the medium, which can improve the utilization rate of the light source 1 and is conducive to improving the brightness of the light output.

[0015] Furthermore, it also includes a light source 4, the light emitted by the light source 4 has a different wavelength or polarization state from the light emitted by the light source 1, and the light emitted by the light source 4 is emitted to the light combining component for light combining;

[0016] And / or, it also includes a light source 5, the light emitted by the light source 5 is the same as one of the fluorescent colors generated by the wavelength conversion component, and the light emitted by the light source 5 is emitted to the light combining component for light combining. The light output brightness of the corresponding color light in the combined light beam is improved, and the color cast of the corresponding color projection image is effectively improved.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The light source system described in the utility model can efficiently utilize the light emitted by light source one, improve the utilization rate of the light source, reduce the length of the optical path passed by the light emitted by light source one as a component of the combined light beam, reduce the number of components passed by, reduce light loss, improve the utilization rate of light source one, and improve the brightness of the projected light. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a light source system of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a light splitting element of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a wavelength conversion component of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of a wavelength conversion component combined with a dissipation element of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of another wavelength conversion component combined with a dissipation element of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of another wavelength conversion component combined with a dissipation element of the utility model;

[0025] Figure 7 It is a structural schematic diagram of another light source system of the utility model;

[0026] Figure 8 It is a structural schematic diagram of another light source system of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of another light source system of the utility model;

[0028] Fig.10 It is a structural schematic diagram of another light source system of the utility model;

[0029] Fig.11 It is a structural schematic diagram of another light source system of the utility model.

[0030] In the figure:

[0031] Light source one 1, light source two 11, light source three 12, light source four 13, light source five 14, beam splitter element 2, reflection area 21, transmission area 22, wavelength conversion component 3, light combining component 4, light combining element one 41, light combining element two 42, light combining element three 43, light combining element four 44, guiding element 5, focusing shaping lens group 6, filter device 7, filter element one 71, filter element two 72, filter layer 73, dissipation element 8, polarization conversion element 9, and light homogenizing element 10. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The light source system disclosed in the embodiment of the utility model improves the utilization efficiency of the light source, reduces light loss, is conducive to reducing power consumption, efficiently combines light, and improves light output brightness.

[0034] like Figure 1 As shown, a light source system mainly includes a light source 1, a light splitting element 2, a wavelength conversion component 3 and a light combining component 4, such as Figure 2As shown, the spectroscopic element 2 is provided with a reflection area 21 and a transmission area 22. The spectroscopic element 2 moves dynamically so that the reflection area 21 and the transmission area 22 are switched to the outgoing light path of the light source 1 in a timely manner. Specifically, the spectroscopic element 2 can be rotated or moved back and forth in a straight line, etc., as long as the reflection area 21 and the transmission area 22 can be periodically switched to the light path. In this embodiment, the spectroscopic element 2 is described by using a rotating dynamic activity mode. When the spectroscopic element 2 is switched to the reflection area 21 on the outgoing light path of the light source 1, the reflection area 21 is inclined to the outgoing light path of the light source 1, so as to reflect and guide the light emitted by the light source 1 to the light path 1. The reflection area 21 has The body can be a metal coated with a reflective film or a transparent medium coated with a reflective film. When the spectroscopic element 2 is switched to the transmission area 22 and is located on the output light path of the light source 1, the light emitted by the light source 1 is transmitted from the transmission area 22 to the light path 2. The transmission area 22 can be a through-port area without any obstruction, or a transparent medium coated with a transmission film, or a diffusion layer can be provided in the transmission area 22. The light source 1 can usually adopt a laser light source or an LED light source. The laser light source has strong coherence and has a speckle problem. The diffusion layer is used for diffusion processing to reduce the coherence of the light, which is conducive to eliminating the speckle. Since the spectroscopic element 2 is dynamically active, the light emitted by the light source 1 can be dynamically diffused. The light emitted by the light source 1 propagating along the optical path 1 is directed toward the light combining component 4, and the light emitted by the light source 1 constitutes a component of the combined light beam. A wavelength conversion component 3 is arranged on the optical path 2, and the light emitted by the light source 1 propagates along the optical path 2 to irradiate the wavelength conversion component 3. The wavelength conversion component 3 is excited to generate fluorescence, and the fluorescence is guided to the light combining component 4, so that the fluorescence and the light emitted by the light source 1 are combined and emitted through the light combining component 4. In addition, the light emitted by the light source 1 propagating along the optical path 1 reflected by the reflection area 21 may be directed toward the wavelength conversion component 3, and the light emitted by the light source 1 propagating along the optical path 2 transmitted from the transmission area 22 may be directed toward the light combining component 4. In this embodiment, the light emitted by the light source 1 is guided to different optical paths in a timely manner by the light splitting element 2, which can reduce the optical path length of the light emitted by the light source 1 as a component of the combined light beam to the light splitting element 2, and reduce the number of elements through which the light emitted by the light source 1 passes, thereby reducing light loss, improving the utilization rate of the light source 1, and further improving the brightness of the projected light.

[0035] In this embodiment, the wavelength conversion component 3 can be a dynamic component, and the wavelength conversion component 3 can perform rotational motion or linear reciprocating motion, etc. The wavelength conversion component 3 is driven by a motor to perform rotational motion for illustration. The wavelength conversion component 3 is provided with wavelength conversion zones distributed along the rotation circumference, and the wavelength conversion zones are provided with wavelength conversion media, such as various phosphors. Specifically, only one or more wavelength conversion zones can be provided, which means that when the wavelength conversion component 3 is irradiated, it can be stimulated to produce only a single color of fluorescence, or different wavelength conversion zones of the wavelength conversion component 3 are stimulated to produce fluorescence of different colors. Usually, the light source 1 adopts a blue excitation light source, and the wavelength conversion zones on the wavelength conversion component 3 can include yellow phosphor zones, green phosphor zones, red phosphor zones, orange phosphor zones, cyan phosphor zones, etc., which produce corresponding colors of fluorescence when irradiated with excitation light.

[0036] More specifically, the light source system further includes a guiding element 5 disposed on the optical path 2 from the light splitting element 2 to the wavelength conversion component 3. The guiding element 5 may specifically be a dichroic mirror. The guiding element 5 transmits the light emitted by the light source 1 and reflects the fluorescence generated by the wavelength conversion component 3. The light emitted by the light source 1 transmits through the guiding element 5 to illuminate the wavelength conversion component 3. The fluorescence generated by the wavelength conversion component 3 is reversely emitted to hit the guiding element 5. The guiding element 5 reflects the fluorescence toward the light combining component 4 to combine and emit the fluorescence. The fluorescence generated by the wavelength conversion component 3 has a large divergence angle. In order to effectively collect light and reduce light loss, a focusing and shaping lens group 6 is disposed between the guiding element 5 and the wavelength conversion component 3. The fluorescence generated by the wavelength conversion component 3 is collected by the focusing and shaping lens group 6 for shaping.

[0037] like Figure 1As shown, the light combining component 4 includes a light combining element 41, which can be a dichroic mirror. The light combining element 41 transmits the fluorescence generated by the wavelength conversion component 3 and reflects the light emitted by the light source 1. Alternatively, the light combining element 41 reflects the fluorescence generated by the wavelength conversion component 3 and transmits the light emitted by the light source 1. The fluorescence and the light emitted by the light source 1 as a component of the light combining beam are incident from both sides of the light combining component 41 and then emitted in the same direction to achieve light combining. The structure is simple and easy to implement. For example, if the light source 1 is a blue laser light source and the fluorescence generated by the wavelength conversion component 3 is green light or yellow light, the transmissive and reflective characteristics of the light combining element 41 can be specifically to reflect light in the wavelength range of 450 to 470 nm and transmit light in the wavelength range of 500 to 540 nm. In the optical path 1, a reflector is still provided between the light splitting element 2 and the light combining element 41, so that the light from the light source 1 reflected by the reflection area of ​​the light splitting element 2 is guided to the light combining element 41 for light combining. A filter device 7 is arranged on the fluorescence output light path of the wavelength conversion component 3. Specifically, the filter device 7 can be arranged between the guiding element 5 and the light combining component 4. The filter device 7 includes a filter element 71. The filter element 71 is arranged on the fluorescence output light path. The filter element 71 is placed statically or switched between being on the fluorescence output light path and being moved out of the fluorescence output light path. The wavelength conversion component 3 excites the fluorescence with a wide wavelength band. Directly using it for light combining can easily lead to a low color gamut. The fluorescence is filtered by the filter element 71 to improve the color purity and achieve a high color gamut. When high brightness and low color gamut are required, the filter element 71 is moved out of the fluorescence output light path. When a high color gamut is required, the filter element 71 is on the fluorescence output light path, so as to flexibly meet different needs. Further, if Figure 1 As shown, the filter device 7 may also include a second filter element 72, which is fixedly arranged on the fluorescence emission light path, that is, the second filter element 72 always filters the fluorescence to improve the color purity and ensure that the color range meets the basic requirements, and the movement and switching of the filter element 1 71 further performs selective filtering to achieve the switching of high and low color ranges. In addition, a filter layer 73 may be arranged on the wavelength conversion component 3, that is, as Figure 3 As shown, a filter layer 73 is added to the surface of the wavelength conversion area of ​​the wavelength conversion component 3, so that the fluorescence generated by the wavelength conversion component 3 when stimulated is immediately filtered through the filter layer 73 at the wavelength conversion component 3, thereby improving the fluorescence color purity, thereby achieving a high color gamut, a compact structure, and small space occupation.

[0038] like Figure 1 and Figure 7As shown, the light source system may further include a light source 11. The light emitted by the light source 11 is different in color from the light emitted by the light source 1, and may also be different in color from the fluorescence generated by the wavelength conversion component 3. For example, the light source 1 emits blue light, while the fluorescence generated by the wavelength conversion component 3 is yellow or green, and the light emitted by the light source 11 is red. The light emitted by the light source 1, the fluorescence generated by the wavelength conversion component 3, and the light emitted by the light source 11 are combined to obtain a required combined light beam. The light source 11 may specifically be a laser light source. Since the high coherence of the laser may cause speckle, in order to suppress and eliminate the speckle, the light emitted by the light source 11 is processed by the dissipation element 8 and then emitted to the light combining component 4 for combined light emission. The dissipation element 8 may specifically be a diffuser or a compound eye, etc. The dissipation element 8 is used to reduce the coherence of the light, effectively suppress the speckle, and improve the light output quality.

[0039] Specifically, the dissipation element 8 can be a static diffuser for static diffusion processing, or a dynamic diffuser for dynamic diffusion processing. The dynamic diffuser can be a dynamic activity such as rotation, linear reciprocating movement, vibration, etc. Figure 7 As shown, the wavelength conversion component 3 and the dissipation element 8 can be independent components, and both can be static components, so that when the light emitted by the light source 1 1 irradiates the wavelength conversion component 3, only one color of fluorescence can be generated, and the dissipation element 8 performs static diffusion processing on the light emitted by the light source 2 11; the wavelength conversion component 3 and the dissipation element 8 can also be dynamic components, and the wavelength conversion component 3 rotates, so that a plurality of different wavelength conversion zones distributed along the rotation circumference can be set on the wavelength conversion component 3, and each wavelength conversion zone generates fluorescence of different colors when irradiated by the light emitted by the light source 1, and the dissipation element 8 rotates to dynamically diffuse the light emitted by the light source 2 11. It is also possible to Figure 1 As shown, the dissipation element 8 and the wavelength conversion component 3 are connected as an integral part, and the integral part rotates dynamically, as shown in FIG. Figures 4 to 6 As shown, the dissipation element 8 is distributed on the radial inner side or outer side of the wavelength conversion component 3, or the dissipation element 8 and the wavelength conversion component 3 are arranged in partitions in the rotational circumferential direction. The structure is compact and only requires one motor for driving, which reduces costs and occupancy space. When the integrated component rotates, the light emitted by the light source 1 can illuminate the wavelength conversion component 3 to generate fluorescence, and the dissipation element 8 can also dynamically diffuse the light emitted by the light source 2 11, and the two do not interfere with each other.

[0040] Or, if Figure 8As shown, a polarization conversion element 9 is provided on the optical path from the light emitted by the second light source 11 to the light combining component 4, and the polarization conversion element 9 performs phase shift on a part of the light emitted by the second light source 11. The polarization conversion element 9 can be specifically a single half-wave plate, and the half-wave plate is located on the outgoing optical path of the second light source 11. The half-wave plate only blocks a part of the light beam emitted by the second light source 11, so that only a part of the light emitted by the second light source 11 passes through the half-wave plate, that is, only a part of the light emitted by the second light source 11 is phase shifted, thereby effectively reducing the phase coherence of the light emitted by the second light source 11, and effectively suppressing speckle. In addition, the polarization conversion element 9 can also be composed of a deflection conversion area and a light transmission area, the deflection conversion area can be specifically a half-wave plate, and the light transmission area can be specifically an unobstructed opening area or a transparent medium area, and the deflection conversion area and the light transmission area are alternately distributed, so that a part of the light emitted by the second light source 11 passes through the deflection conversion area for phase shift, and the other part passes through the light transmission area without phase shift, thereby effectively reducing the phase coherence of the overall light beam.

[0041] The light emitted by the second light source 11 is dissipated by the dissipation element 8 or the polarization conversion element 9 and then emitted to the light combining component 4. Specifically, the light combining component 4 also includes a second light combining element 42. The second light combining element 42 can be the light emitted by the reflected light source 11 and the light emitted by the light source 1 and the fluorescence generated by the wavelength conversion component 3. The transmittance and reflection characteristics of the second light combining element 42 can be specifically transmitted light of 450 to 540 nm and reflected light of 600 to 620 nm. The light of the light source 1 emitted from the first light combining element 41 and the fluorescence of the wavelength conversion component 3 are emitted to the second light combining element 42, and the light emitted by the second light source 11 is emitted to the second light combining element 42 from the other side, and finally a total combined light beam is obtained. A uniform light element 10 is arranged on the light combining output light path of the light combining component 4. The uniform light element 10 can be specifically a light rod or a compound eye lens, etc. The light rod can be specifically a solid or hollow structure. When using the light rod, it is preferably necessary to arrange a lens group on the light incident side of the light rod to better shape and focus the combined light beam into the light rod.

[0042] like Figure 1 , Figure 7 as well as Figure 8As shown, the light source system can also include a light source three 12, which is an LED light source. The light emitted by the light source three 12 is different in color from the light emitted by the light source one 1, and can also be different in color from the fluorescent color generated by the wavelength conversion component 3. The light emitted by the light source three 12 is the same color as the light emitted by the light source two 11 but has a different wavelength. Specifically, the light source three 12 and the light source two 11 can both emit red, but have different central wavelengths. The light emitted by the light source three 12 is emitted to the light combining component 4, so that the entire light source system integrates three types of light sources, including a laser light source, a fluorescent light source and an LED light source, and combines the advantages of multiple light sources to achieve low power consumption, high light efficiency, high color gamut, and low implementation cost. Preferably, the light emitted by the light source three 12 is combined with the light emitted by the light source two 11 first and then combined with the light emitted by the light source one 1 and the fluorescence generated by the wavelength conversion component 3. Specifically, the light emitted by the light source three 12 and the light emitted by the light source two 11 are combined through the light combining element three 43 of the light combining component 4. The light combining element three 43 is a dichroic mirror, which reflects one of the light emitted by the light source three 12 and the light emitted by the light source two 11 and transmits the other. The combined light emitted from the light combining element three 43 is directed to the light combining element two 42 for total light combination. In the light source system, only one of the light source two 11 and the light source three 12 can be set, or both can be set to flexibly meet different needs.

[0043] like Fig. 9 In a specific embodiment shown in the figure, an opening is provided on the guiding element 5 for the light emitted by the light source 1 to pass through, and then the light emitted by the light source 1 is incident on the focusing shaping lens group 6 off-axis, and the light emitted by the light source 1 is shaped and focused on the wavelength conversion component 3 by the focusing shaping lens group 6. Since the light emitted by the light source 1 is incident on the focusing shaping lens group 6 in an off-axis state, the light emitted by the light source 1 is obliquely irradiated on the wavelength conversion component 3, and the fluorescence divergence angle generated by the wavelength conversion component 3 is large, and the fluorescence spot formed after the light is collected by the focusing shaping lens group 6 is also located on the optical axis of the focusing shaping lens group 6, so that the fluorescence will not return from the opening of the guiding element 5 along the incident light path of the light source 1, and the fluorescence generated by the wavelength conversion component 3 is reflected by the guiding element 5 and guided to the light combining component 4. The guiding element 5 can specifically be a reflective plate or a dichroic plate that transmits the light emitted by the light source 1 and reflects the fluorescence. It has a simple structure and is easy to implement. The light emitted by the light source 1 passes directly through the opening, so there is no loss of penetrating the medium, which can improve the utilization rate of the light source 1 and is conducive to improving the brightness of the light output.

[0044] like Fig.10In a specific embodiment shown, the light source system may further include a light source 4 13. The light emitted by the light source 4 13 has a different wavelength or polarization state from the light emitted by the light source 1. The light emitted by the light source 4 13 is emitted to the light combining component 4 for light combining. The light source 4 13 is used to increase the brightness of the corresponding color light in the light combining beam, thereby improving the overall light output quality. The light emitted by the light source 4 13 can be combined with the light emitted by the light source 1 first and then with the fluorescence of the wavelength conversion component 3. To facilitate light combining, the light emitted by the light source 4 13 has the same color as the light emitted by the light source 1 but a different wavelength. The wavelength combining method can be used. Fig.10 The light combining element 44 is specifically a dichroic mirror for light combining, or the light emitted by the light source 413 is in a different polarization state from the light emitted by the light source 1, for example, one is a linearly polarized light in a P state and the other is a linearly polarized light in an S state, then Fig.10 The light combining element 44 is specifically a polarization light combining element, which can achieve light combining by polarization light combining. The light emitted by the light source 4 13 can first be combined with the light emitted by the light source 1 and then emitted to the light combining element 41 to be combined with the fluorescence generated by the wavelength conversion component 3.

[0045] like Fig.11 In one embodiment shown, the light source system may further include a light source five 14, wherein the light emitted by the light source five 14 is the same as one of the fluorescent colors generated by the wavelength conversion component 3, for example, the green fluorescence generated by the wavelength conversion component 3, and the light source five 14 may adopt a green light source, specifically a green laser light source or a green LED light source, etc., which may increase the brightness and enhance the color gamut. The light emitted by the light source five 14 is emitted to the light combining component 4 for light combining. In a specific embodiment, the light emitted by light source five 14 is guided by the beam splitting element 2 to the light combining component 4 for light combining. At a certain moment, the beam splitting element 2 switches to the transmission area 22 which is on the output light path of the light source one 1. The light emitted by light source one 1 is transmitted through the transmission area 22 to propagate along the light path two and illuminate the wavelength conversion component 3. The wavelength conversion component 3 is stimulated to generate fluorescence, and the fluorescence enters the light combining component 4 and emits light from the light combining component 4. At the same time, light source five 14 is working, and light source five 14 is incident on the transmission area 22 from the other side of the beam splitting element 2, so that the light emitted by light source five 14 is transmitted through the transmission area to propagate along the light path one. The light emitted by light source five 14 is the same color as the fluorescence generated by the wavelength conversion component 3 but has a different wavelength, so that wavelength combination can be performed through the light combining element one 41, so that the light output of the light source system at this moment is monochromatic green light.

[0046] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A light source system, characterized in that: The invention comprises a light source (1), a light splitting element (2), a wavelength conversion component (3) and a light combining component (4); the light splitting element (2) is provided with a reflection area (21) and a transmission area (22); the light splitting element (2) is dynamically movable so that the reflection area (21) and the transmission area (22) are switched to the output light path of the light source (1) in a timely manner; the light emitted by the light source (1) is reflected by the reflection area (21) and guided to the light path (1); the light emitted by the light source (1) is transmitted from the transmission area (22) to the light path (2); the wavelength conversion component (3) is arranged on the light path of one of the light path (1) and the light path (2); the wavelength conversion component (3) is irradiated by the light emitted by the light source (1) and excited to generate fluorescence; the fluorescence is combined with the light emitted by the light source (1) propagating along the other of the light path (1) and the light path (2) through the light combining component (4) and output.

2. The light source system according to claim 1, characterized in that: It also includes a second light source (11), wherein the light emitted by the second light source (11) has a different color from the light emitted by the first light source (1); The light emitted by the second light source (11) is processed by the dissipation element (8) and then emitted to the light combining component (4) for light combining and emission, and / or a polarization conversion element (9) is provided on the optical path from the light emitted by the second light source (11) to the light combining component (4), and the polarization conversion element (9) performs phase shift on a part of the light emitted by the second light source (11).

3. The light source system according to claim 2, characterized in that: The dissipation element (8) and the wavelength conversion component (3) are connected as an integral part, the integral part rotates dynamically, and the dissipation element (8) is distributed on the radial inner side or outer side of the wavelength conversion component (3), or the dissipation element (8) and the wavelength conversion component (3) are arranged in partitions in the rotation circumferential direction.

4. The light source system according to claim 1, characterized in that: The invention comprises at least one of a second light source (11) and a third light source (12), wherein the second light source (11) is a laser light source, and the third light source (12) is an LED light source. The light emitted by the second light source (11) and the third light source (12) is different in color from the light emitted by the first light source (1). The light emitted by the third light source (12) is the same in color as the light emitted by the second light source (11) but has a different wavelength. The light emitted by the third light source (12) and the light emitted by the second light source (11) are emitted to a light combining component (4).

5. The light source system according to claim 1, characterized in that: The transmission area (22) is provided with a diffusion layer.

6. The light source system according to claim 1, characterized in that: A filter layer (73) is provided on the wavelength conversion component (3).

7. The light source system according to claim 1, characterized in that: A filter device (7) is arranged on the fluorescence output light path of the wavelength conversion component (3), and the filter device (7) comprises a filter element 1 (71). The filter element 1 (71) is arranged on the fluorescence output light path, and the filter element 1 (71) is statically placed or movably switched between being on the fluorescence output light path and being moved out of the fluorescence output light path.

8. The light source system according to claim 7, characterized in that: The filter device (7) comprises a second filter element (72), and the second filter element (72) is fixedly arranged on the fluorescence emission light path.

9. The light source system according to claim 1, characterized in that: A guiding element (5) is also provided on the optical path from the light splitting element (2) to the wavelength conversion component (3); an opening is provided on the guiding element (5) for light emitted by the light source one (1) to pass through and then obliquely enter the wavelength conversion component (3); the guiding element (5) reflects and guides the fluorescence generated by the wavelength conversion component (3) to the light combining component (4); the guiding element (5) is a reflective sheet or a dichroic sheet that transmits the light emitted by the light source one (1) and reflects the fluorescence.

10. The light source system according to claim 1, characterized in that: It also includes a light source four (13), wherein the light emitted by the light source four (13) has a different wavelength or a different polarization state from the light emitted by the light source one (1), and the light emitted by the light source four (13) is emitted to the light combining component (4) for light combining; And / or, it also includes a light source five (14), the light source five (14) emits light of the same color as one of the fluorescent colors generated by the wavelength conversion component (3), and the light emitted by the light source five (14) is emitted to the light combining component (4) for light combining.

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