Mixed light source system and projection equipment

Abstract

The utility model relates to a mixed light source system and projection equipment. The mixed light source system comprises a laser assembly, an LED assembly and a light guide assembly. The laser assembly comprises a red laser used for emitting a red laser beam, a green laser used for emitting a green laser beam and a blue laser used for emitting a blue laser beam. The LED assembly is used for emitting LED light beams, and the LED light beams at least comprise red LED light beams; the light guide assembly is located on the light emitting sides of the red laser, the green laser, the blue laser and the LED assembly, and the light guide assembly is used for guiding the red laser beam, the green laser beam, the blue laser beam and the LED beam to the same direction for propagation, so that a target beam is formed; according to the invention, the speckle problem of the mixed light source system can be reduced, and the brightness is improved.

Description

Technical Field

[0001] The present application relates to the technical field of projection equipment, and in particular to a hybrid light source system and a projection equipment. Background Art

[0002] The light source system is a very important component of the projection device. It determines the brightness and color of the projected image and also affects the life of the projection device, all of which are closely related to consumers' daily applications.

[0003] LED light sources and laser light sources are the most common light sources for projection equipment on the market. LED light sources have the advantage of low cost, but their luminous brightness has a bottleneck, making it difficult to achieve high brightness, and they are less adaptable to certain scenes, and cannot meet the needs of multi-scene light source display.

[0004] Laser light sources have the advantages of high brightness, wide color gamut, low energy consumption, and long life. At present, in order to ensure the brightness of the projected image, laser light sources are usually used to provide lighting for projection equipment. Compared with monochromatic laser light sources and two-color laser light sources, the red, green, and blue laser beams emitted by three-color laser light sources are all emitted by lasers, and the laser beams emitted by lasers have good monochromaticity. Therefore, as long as the laser with the appropriate wavelength is selected, it can be ensured that the red, green, and blue laser beams emitted by the three-color laser light source have almost no stray light. Therefore, projection equipment using three-color laser light sources can achieve high saturation, more vivid colors, and a wider color gamut coverage, and can truly reproduce the rich and gorgeous colors of the objective world, which makes the application of three-color laser light sources in projection equipment more and more extensive.

[0005] However, in practical applications, speckle is prone to occur due to the high coherence of the laser beam emitted by the laser, especially for red lasers. Since they have the longest line width, the longest coherence length, and the most serious interference, the human eye is also the most sensitive to the speckle effect of red laser beams. The presence of speckle will seriously reduce the quality of the displayed image. Utility Model Content

[0006] Based on this, the utility model provides a hybrid light source system and a projection device, wherein the hybrid light source system solves the speckle problem of the laser projection device in the prior art and also improves the brightness.

[0007] In one aspect, a hybrid light source system is provided, comprising a laser component, an LED component and a light guide component;

[0008] The laser assembly includes a red laser for emitting a red laser beam, a green laser for emitting a green laser beam, and a blue laser for emitting a blue laser beam;

[0009] The LED assembly is used to emit an LED light beam, wherein the LED light beam at least includes a red LED light beam;

[0010] The light guide component is located at the light output side of the red laser, the green laser, the blue laser and the LED component, and is used to guide the red laser beam, the green laser beam, the blue laser beam and the LED beam to propagate in the same direction, thereby forming a target beam;

[0011] The wavelength ranges of the red LED light beam and the red laser light beam partially overlap.

[0012] Optionally, the wavelength range of the red LED light beam is between 582 nm and 642 nm, and the wavelength range of the red laser light beam is between 635 nm and 656 nm.

[0013] Optionally, the red laser beam includes three or more laser beams with different wavelengths, and the bandwidth of each wavelength is within 6 nm.

[0014] Optionally, the laser assembly further comprises a phase vibration plate, wherein the phase vibration plate is located at the light output side of at least one of the red laser, the green laser and the blue laser, and the phase vibration plate is used to suppress the coherence of the laser beam.

[0015] Optionally, a speckle elimination component is further included, which is located on the light-emitting side of the light-guiding component and is used to suppress the coherence of the target light beam.

[0016] Optionally, the speckle elimination component includes a first light shaping component, a rotating diffusion wheel, and a second light shaping component which are arranged in sequence according to the propagation direction of the target light beam, the first light shaping component and the second light shaping component are used to shape the target light beam, and the rotating diffusion wheel is used to suppress the coherence of the target light beam.

[0017] Optionally, the light guide assembly includes a first dichroic mirror, a second dichroic mirror and a third dichroic mirror;

[0018] The first dichroic mirror is located at the intersection of the red LED light beam and the red laser light beam, and the first dichroic mirror is used to combine the red LED light beam and the red laser light beam into a first light beam;

[0019] The second dichroic mirror is located at the intersection of the green laser beam and the blue laser beam, and is used to guide the directions of the green laser beam and the blue laser beam to form a second beam propagating in the same direction;

[0020] The third dichroic mirror is located at the intersection of the first light beam and the second light beam, and is used to guide the directions of the first light beam and the second light beam to form the target light beam propagating in the same direction.

[0021] Optionally, the reflectivity of the first dichroic mirror to light beams with a wavelength above 632 nm reaches above 90%, and the transmittance of the first dichroic mirror to light beams with a wavelength below 632 nm reaches above 90%.

[0022] Optionally, the hybrid light source system also includes a light absorbing component and a heat conducting component, and the light guiding component includes a first dichroic mirror; the first dichroic mirror is located at the intersection of the red LED light beam and the red laser light beam, the light absorbing component is located on the optical path of the red LED light beam reflected by the first dichroic mirror, the light absorbing component is used to absorb the reflected red LED light beam, and the heat conducting component is connected to the light absorbing component and extends outside the housing of the hybrid light source system.

[0023] On the other hand, a projection device is provided, including a light valve assembly, a projection lens, and the hybrid light source system described in any of the above embodiments;

[0024] The mixed light source system is used to provide a target light beam for the light valve assembly. The light valve assembly adjusts the target light beam into an image beam and transmits the image beam to a projection lens. The projection lens is used to project the image beam out of the projection device to form a projection image on an external medium.

[0025] The technical solution provided by the embodiment of the present application brings at least the following beneficial effects:

[0026] The hybrid light source system provided in the embodiment of the present application utilizes a red laser and a red LED light source to provide a mixed red primary color light, a green laser to provide a green primary color light, and a blue laser to provide a blue primary color light. Since the red laser beam generated by the red laser, the green laser beam generated by the green laser, and the blue laser beam generated by the blue laser have good monochromaticity and almost no stray light, high saturation, more vivid colors, and a wider color gamut coverage can be achieved, and the rich and gorgeous colors of the objective world can be reproduced most realistically. The method of providing a mixed red light by using a red laser and a red LED light source can improve the brightness. In the hybrid light source system of the embodiment of the present application, the wavelength ranges of the red LED beam and the red laser beam partially overlap. When the red LED beam and the red laser beam are combined, the spectrum of the red light can be broadened and the coherence of the red light beam can be reduced, thereby suppressing the speckle effect formed by the light source system.

[0027] In addition, on this basis, the red laser beam contains at least three laser beams of different wavelengths, which is conducive to further reducing the coherence of the red laser beam, thereby further suppressing the speckle effect formed by the light source system. Finally, the hybrid light source system provided in the embodiment of the present application also uses a phase vibration plate and a speckle elimination component, which can also further effectively suppress the speckle effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0030] Figure 1 A schematic diagram of the structure of a hybrid light source system provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the structure of a hybrid light source system provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of the structure of a hybrid light source system provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the structure of a hybrid light source system provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of the structure of a hybrid light source system provided in an embodiment of the present application;

[0035] Figure 6 A schematic diagram of the structure of a hybrid light source system provided in an embodiment of the present application;

[0036] Figure 7 A schematic diagram of a projection device provided for an embodiment of the application. DETAILED DESCRIPTION

[0037] 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.

[0038] Figure 1 and Figure 2 It is a structural schematic diagram of a hybrid light source system provided in an embodiment of the present application.

[0039] like Figure 1 and Figure 2 As shown, it includes a laser component, an LED component, and a light guide component. The laser component includes a red laser 11 for emitting a red laser beam 101, a green laser 12 for emitting a green laser beam 102, and a blue laser 13 for emitting a blue laser beam 103; the LED component is used to emit an LED beam, and the LED beam includes at least a red LED beam. In this embodiment, the LED component includes a red LED light source 14 for emitting a red LED beam 104.

[0040] The light guide assembly is located at the light output side of the red laser 11, the green laser 12, the blue laser 13 and the red LED light source 14, and is used to guide the directions of the red laser beam 101, the green laser beam 102, the blue laser beam 103 and the red LED beam 104 to form a target beam 203 propagating in the same direction;

[0041] For example, Figure 1 As shown, the light guide assembly includes a first dichroic mirror 21, a second dichroic mirror 22 and a third dichroic mirror 23; the first dichroic mirror 21 is located at the intersection of the red LED light beam 104 and the red laser light beam 101, and the first dichroic mirror 21 is used to combine the red LED light beam 104 and the red laser light beam 101 to form a first light beam 201 propagating in the same direction; the second dichroic mirror 22 is located at the intersection of the green laser light beam 102 and the blue laser light beam 103, and the second dichroic mirror 22 is used to guide the propagation directions of the green laser light beam 102 and the blue laser light beam 103, thereby forming a second light beam 202 propagating in the same direction; the third dichroic mirror 23 is located at the intersection of the first light beam 201 and the second light beam 202, and the third dichroic mirror 23 is used to guide the propagation directions of the first light beam 201 and the second light beam 202, thereby forming a target light beam 203 propagating in the same direction.

[0042] In other implementations, such as Figure 2As shown, the light guide assembly may further include a first dichroic mirror 21, a fourth dichroic mirror 24 and a fifth dichroic mirror 25; the first dichroic mirror 21 is located at the intersection of the red LED light beam 104 and the red laser light beam 101, and the first dichroic mirror 21 is used to combine the red LED light beam 104 and the red laser light beam 101 to form a first light beam 201 propagating in the same direction; the fourth dichroic mirror 24 is located at the intersection of the green laser light beam 102 and the first light beam 201, and the fourth dichroic mirror 24 is used to guide the propagation directions of the green laser light beam 102 and the first light beam 201, thereby forming a fourth light beam 204 propagating in the same direction; the fifth dichroic mirror 25 is located at the intersection of the fourth light beam 204 and the blue laser light beam 103, and the fifth dichroic mirror 25 is used to guide the propagation directions of the fourth light beam 204 and the blue laser light beam 103, thereby forming a target light beam 203 propagating in the same direction.

[0043] As an example, Figure 1 As shown, the red laser beam 101 and the green laser beam 102 have the same direction and are parallel to each other, the red LED beam 104 and the blue laser beam 103 have opposite directions and are parallel to each other, the red LED beam 104 is perpendicular to the red laser beam 101 and projects toward the red laser beam 104, and the blue laser beam 103 is perpendicular to the green laser beam 102 and projects toward the green laser beam 102. As another example, Figure 2 As shown, the red laser beam 101 , the green laser beam 102 and the blue laser beam 103 have the same direction and are parallel to each other, and the red LED beam 104 is perpendicular to the red laser beam 101 and projects toward the red laser beam 101 .

[0044] In this embodiment, the first dichroic mirror 21 can reflect the red laser beam 101 and transmit the red LED beam 104. Preferably, the reflectivity of the first dichroic mirror to the beam with a wavelength above 632nm reaches more than 90%, and the transmittance to the beam with a wavelength below 632nm reaches more than 90%; the second dichroic mirror 22 can transmit the green laser beam 102 and reflect the blue laser beam 103; the third dichroic mirror 23 can transmit the first beam and reflect the second beam, the fourth dichroic mirror 24 can transmit the first beam 201 and reflect the green laser beam 102, and the fifth dichroic mirror 25 can transmit the fourth beam 204 and reflect the blue laser beam.

[0045] For example, Figure 1As shown, the optical path of the hybrid light source system of this embodiment is as follows: the red LED light beam 104 emitted by the red LED light source 14 is emitted toward the first dichroic mirror 21 and passes through the first dichroic mirror 21; the red laser light beam 101 emitted by the red laser 11 is emitted toward the first dichroic mirror 21 and is reflected by the first dichroic mirror 21; the red LED light beam 104 passing through the first dichroic mirror 21 and the red laser light beam 101 reflected by the first dichroic mirror 21 are combined to form a first light beam 201 propagating in the same direction; the green laser light beam 102 emitted by the green laser 12 is emitted toward the second dichroic mirror 22 and passes through the second dichroic mirror 22, the blue laser beam 103 emitted by the blue laser 13 is emitted to the second dichroic mirror 22 and is reflected by the second dichroic mirror, the green laser beam 102 passing through the second dichroic mirror and the blue laser beam 103 reflected by the second dichroic mirror form a second beam 202 propagating in the same direction; the first beam 201 is emitted to the third dichroic mirror 23 and passes through the third dichroic mirror 23, the second beam 202 is emitted to the third dichroic mirror and is reflected by the third dichroic mirror, the first beam 201 passing through the third dichroic mirror 23 and the second beam reflected by the third dichroic mirror 23 form a target beam 203 propagating in the same direction.

[0046] The hybrid light source system of the embodiment of the present application can output red, green and blue primary color light beams in a time sequence, that is, according to actual needs, the hybrid light source system can be controlled to emit red, green and blue primary color light beams in sequence according to control instructions. Exemplarily, when the hybrid light source system is required to emit red light, the green laser 12 and the blue laser 13 are turned off, the red LED light source 14 and the red laser 11 are turned on, and the red LED light beam 104 emitted by the red LED light source 14 and the red laser light beam 101 emitted by the red laser 11 are guided by the light guide component to form a target light beam 203 propagating in the same direction and output, and at this time the target light beam 203 is red primary color light; when the hybrid light source system is required to emit green light, the red LED light source 14, the red laser 11 and the blue laser 13 are turned off, and the red LED light source 104 and the red laser light beam 101 emitted by the red laser 11 are turned on, and the red LED light beam 104 and the red laser light beam 101 emitted by the red laser 11 are guided by the light guide component to form a target light beam 203 propagating in the same direction and output, and at this time the target light beam 203 is red primary color light; when the hybrid light source system is required to emit green light, the red LED light source 14, the red laser 11 and the blue laser 13 are turned on, and the red LED light source 104 and the red laser light beam 101 emitted by the red laser 1 ... The optical device 13 is turned off, the green laser 12 is turned on, and the green laser light beam 102 emitted by the green laser 12 is guided by the light guide component to form a target light beam 203 and output. At this time, the target light beam 203 is green-primary light; when the mixed light source system is required to emit blue light, the red LED light source 14, the red laser 11 and the green laser 12 are turned off, and the blue laser 13 is turned on. The blue laser light beam 103 emitted by the blue laser 13 is guided by the light guide component to form a target light beam 203 and output. At this time, the target light beam 203 is blue-primary light.

[0047] In the hybrid light source system of the embodiment of the present application, the wavelength ranges of the red LED light beam 104 and the red laser light beam 101 partially overlap. Preferably, the wavelength range of the red LED light beam 104 is between 582 and 642 nm; and the wavelength range of the red laser light beam 101 is between 635 nm and 656 nm. The red laser light beam 101 includes three or more light beams of different wavelengths, and the bandwidth of each wavelength is within 6 nm. When the red LED light beam 104 and the red laser light beam 101 are combined, the spectrum of the red light can be broadened, thereby reducing the coherence of the red light beam. Compared with the green laser beam and the blue laser beam, the human eye is most sensitive to the speckle effect of the red laser beam. Therefore, by reducing the coherence of the red laser beam, the speckle effect of the hybrid light source system can be effectively suppressed, and the red color saturation of the picture can be reduced, making it more comfortable for the human eye to watch.

[0048] In the present application, the red laser beam 101 emitted by the red laser 11 preferably includes at least three laser beams with different wavelengths, the green laser beam 102 emitted by the green laser 12 preferably includes at least three laser beams with different wavelengths, and the blue laser beam 103 emitted by the blue laser 13 preferably includes at least three laser beams with different wavelengths; the red laser beam 101 with at least three wavelengths is conducive to reducing the coherence of the red laser beam 101, the green laser beam 102 with at least three wavelengths is conducive to reducing the coherence of the green laser beam 102, and the blue laser beam 103 with at least three wavelengths is conducive to reducing the coherence of the blue laser beam 103, thereby further suppressing the speckle effect of the light source system.

[0049] like Figure 1 and Figure 2 As shown, since the red LED light beam 104 emitted by the LED light source 14, the red laser light beam 101 emitted by the red laser 11, the green laser light beam 102 emitted by the green laser 12, and the blue laser light beam 103 emitted by the blue laser 13 are slightly divergent, in order to enhance the utilization rate of light, the LED assembly of the embodiment of the present application may further include a collimating assembly 34, and the laser assembly may further include a collimating assembly 31, a collimating assembly 32, and a collimating assembly 33, wherein the collimating assembly 31 is used to collimate the red laser light beam 101; the collimating assembly 32 is used to collimate the green laser light beam 102; the collimating assembly 33 is used to collimate the blue laser light beam 103, and the collimating assembly 34 is used to collimate the red LED light beam 104. The collimating assembly 34 may be a combination of a concave-convex lens and a biconvex lens, and the red LED light beam is incident from the concave surface of the concave-convex lens and emitted from the convex surface, and then emitted toward the biconvex lens and emitted from the biconvex lens, and the collimating assembly 31, the collimating assembly 32, and the collimating assembly 33 may be a biconvex lens respectively.

[0050] For example, Figure 1 As shown, the collimation assembly 34 is located between the red LED light source 14 and the first dichroic mirror 21; the collimation assembly 31 is located between the red laser 11 and the first dichroic mirror 21; the collimation assembly 32 is located between the green laser 12 and the second dichroic mirror 22; and the collimation assembly 33 is located between the blue laser 13 and the second dichroic mirror 22.

[0051] The hybrid light source system of the embodiment of the present application adopts a red laser and a red LED light source to provide a mixed red primary color light, a green laser to provide a green primary color light, and a blue laser to provide a blue primary color light. Since the red laser beam generated by the red laser, the green laser beam generated by the green laser, and the blue laser beam generated by the blue laser have good monochromaticity and almost no stray light, high saturation, more vivid colors, and a wider color gamut coverage can be achieved, and the rich and gorgeous colors of the objective world can be reproduced most realistically; and the method of using a red laser and a red LED light source to provide a mixed red primary color light can reduce costs on the one hand, and further provide brightness on the other hand; in the hybrid light source system of the embodiment of the present application, the wavelength ranges of the red LED beam and the red laser beam partially overlap. When the red LED beam and the red laser beam are combined, the spectrum of the red light can be broadened, thereby reducing the coherence of the red light beam. Compared with the green and blue laser beams, the human eye is most sensitive to the speckle effect of the red laser beam, so the speckle effect formed by the light source system can be effectively suppressed by reducing the coherence of the red laser beam.

[0052] In addition, the red laser beam emitted by the red laser of the present application preferably includes at least three laser beams of different wavelengths. The red laser can emit red laser beams of at least three wavelengths, which reduces the coherence between the beams within the red laser beam. Similarly, the green laser can emit green laser beams of at least three wavelengths, which reduces the coherence between the beams within the green laser beam. Similarly, the blue laser can emit blue laser beams of at least three wavelengths, which reduces the coherence between the beams within the blue laser beam. In this way, by reducing the coherence of the red laser beam, the green laser beam and the blue laser beam, the speckle effect of the hybrid light source system can be further suppressed.

[0053] The LED component of the embodiment of the present application may also include one or both of a green LED light source for emitting a green LED light beam and a blue LED light source for emitting a blue LED light beam. The green LED light source and the green laser can be used to provide a mixed green-primary light, and the blue LED light source and the blue laser can be used to provide a mixed blue-primary light. The principle of this part of the optical path is similar to that of using a red LED light source and a red laser to provide a mixed red-primary light, and will not be repeated here. This structure can further increase the brightness of the light source system, and can reduce the coherence of the green laser beam and the blue laser beam, thereby further suppressing the speckle effect of the light source system.

[0054] Figure 3 It is a structural schematic diagram of a hybrid light source system provided in an embodiment of the present application.

[0055] like Figure 3 As shown, the laser component of the hybrid light source system of the embodiment of the present application may also include at least one of a phase vibration plate 41, a phase vibration plate 42 and a phase vibration plate 43, or include at least one of a phase vibration plate 41 and a phase vibration plate 44, the phase vibration plate 41 is located between the red laser 11 and the first dichroic mirror 21, and is used to reduce the coherence of the red laser beam 101, the phase vibration plate 42 is located between the green laser 12 and the second dichroic mirror 22, and is used to reduce the coherence of the green laser beam 102, the phase vibration plate 43 is located between the blue laser 13 and the second dichroic mirror 22, and is used to reduce the coherence of the blue laser beam 102, and the phase vibration plate 44 is located between the second dichroic mirror 22 and the third dichroic mirror 23, and is used to reduce the coherence of the second beam 202.

[0056] The present embodiment adds a phase vibration plate, which can further reduce the coherence of the laser beam, thereby making the hybrid light source system more effective in suppressing the speckle effect.

[0057] Figure 4-Figure 5 It is a structural schematic diagram of a hybrid light source system provided in an embodiment of the present application.

[0058] The hybrid light source system of the embodiment of the present application may further include a speckle elimination component located on the light emitting side of the light guide component.

[0059] For example, Figure 4 As shown, the hybrid light source system of the embodiment of the present application further includes a speckle elimination component 50 located on the light-emitting side of the third dichroic mirror 23, which is used to reduce the coherence of the target light beam 203, thereby more effectively suppressing the speckle effect of the light source system.

[0060] Further Figure 5As shown, the speckle elimination component 50 includes a first light shaping component 51, a rotating diffusion wheel 52, and a second light shaping component 53 which are sequentially arranged according to the propagation direction of the target light beam 203. The first light shaping component 51 and the second light shaping component 53 are used to shape the target light beam 203, and the rotating diffusion wheel 52 is used to suppress the coherence of the target light beam 203.

[0061] In some embodiments, the first light shaping component 51 includes a light homogenizer 511 and a focusing lens 512, and the light homogenizer 511 may include a diffuser or a fly-eye lens, preferably a fly-eye lens; the second light shaping component 53 includes a collimating lens 531 and a light homogenizer 532, and the light homogenizer 532 may include a fly-eye lens or a light rod or a light pipe, preferably a fly-eye lens.

[0062] The third dichroic mirror 23 emits the target light beam 203 to the light homogenizer 511. The light homogenizer 511 can homogenize the incident target light beam 203. The target light beam 203 homogenized by the light homogenizer 511 is emitted to the focusing lens 512. The focusing lens 512 is used to converge the incident target light beam 203 to the rotating diffusion wheel 52. The rotating diffusion wheel 52 can diffuse the target light beam 203 in a converged state, increase the divergence angle of the light beam, increase the random phase, thereby reducing the coherence of the target light beam 203, and then suppress the speckle effect of the hybrid light source system; after the target light beam 203 is diffused by the rotating diffusion wheel 52, the divergence degree of the light beam becomes larger. In order to improve the light collection effect, a collimating lens 531 is arranged behind the rotating diffusion wheel 52. The target light beam 203 emitted from the rotating diffusion wheel 52 is collimated by the collimating lens 531, and is emitted after being homogenized again by the light homogenizer 532.

[0063] In this embodiment, the target light beam 203 is first homogenized by the light homogenizer 511 and then diffused and homogenized by the rotating diffusion wheel 52, which can enhance the divergence of the target light beam 203, reduce the coherence of the target light beam 203, and thus suppress the speckle effect.

[0064] In other embodiments, the first light shaping component 51 only includes the focusing lens 512, or the second light shaping component 53 only includes the light homogenizer 532, the third dichroic mirror 23 emits the target light beam 203 to the focusing lens 512, the focusing lens 512 converges the incident target light beam 203 to the rotating diffusion wheel 52, and the target light beam 203 diffused by the rotating diffusion wheel 52 enters the light homogenizer 532 for homogenization.

[0065] In this embodiment, the rotating diffusion wheel 52 can diffuse the target light beam 203 in a convergent state, increase the divergence angle of the light beam, increase the random phase, thereby reducing the coherence of the target light beam 203 and suppressing the speckle effect.

[0066] Figure 6It is a structural schematic diagram of a hybrid light source system provided in an embodiment of the present application.

[0067] The hybrid light source system of the present application embodiment further includes a heat dissipation system, which is used to dissipate heat from the LED light source. For example, Figure 6 As shown, the heat dissipation system includes a heat conducting member 61 and a light absorbing member 62 located above the red LED light source 14, the light absorbing member 62 is located on a side close to the red LED light source 14, the heat conducting member 61 is connected to the light absorbing member 62 and is located on a side away from the red LED light source 14, and the heat conducting member 61 extends to the outside of the housing (not shown) of the hybrid light source system; when the red LED light beam 104 emitted by the red LED light source 14 is directed toward the first dichroic mirror 21, part of the light is reflected by the first dichroic mirror 21 and cannot enter the light path behind, this part of the red LED light beam 104 cannot be used by the hybrid light source system and becomes waste light, the light absorbing member 62 can absorb this part of the waste light, and the heat of the waste light absorbed by the light absorbing member 62 is dissipated to the outside through the heat conducting member 61, thereby achieving heat dissipation of the red LED light source. The heat conducting member 61 can be a common heat conducting structure and material such as a copper tube and a graphene sheet, and the light absorbing member 62 can be a material that can efficiently absorb the reflected red LED light beam 104.

[0068] Figure 7 It is a schematic diagram of a projection device provided in an embodiment of the present application.

[0069] like Figure 7 As shown, the projection device includes a light valve assembly 700, a projection lens 740, and a mixed light source system 000. The mixed light source system 000 can be Figures 1 to 7 Any of the mixed light source systems shown, in this embodiment, Figure 7 The hybrid light source system 000 is used to provide the target light beam 203 to the light valve assembly 700, and the light valve assembly 700 is used to adjust the target light beam 203 into an image beam and transmit the image beam to the projection lens 740, and the projection lens 740 is used to project the image beam out of the projection device, thereby forming a projection image on an external medium.

[0070] like Figure 7As shown, the light valve assembly 700 may include a lens 711, a reflector 712, a lens 713, a light valve 720 and a prism group 730. The lens 711, the reflector 712 and the lens 713 are used to guide the target light beam 203 to the prism group 730. The prism group 730 is used to guide the incident target light beam 203 to the light valve 720. In a specific embodiment, the prism group 730 may include a total internal reflection prism (Total Internal Reflection Prism), referred to as a TIR prism. The light valve 720 is used to adjust the incident target light beam 203 into an image beam and transmit the image beam to the projection lens 740. In a specific embodiment, the light valve 720 may include a digital micromirror device (DMD chip), referred to as a DMD chip. There are millions of pixels on the chip, and each pixel has a reflector. These reflectors can be flipped within a certain angle range under current driving to adjust the amount of light entering the lens, so that different colors are presented on the image; or include a liquid crystal on silicon (LCS) chip. The projection lens 740 is used to project the image beam out of the projection device to form a projection image on an external medium.

[0071] In the description of the present invention, it should be understood that 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A hybrid light source system, characterized in that: Including laser components, LED components and light guide components; The laser assembly includes a red laser for emitting a red laser beam, a green laser for emitting a green laser beam, and a blue laser for emitting a blue laser beam; The LED assembly is used to emit an LED light beam, wherein the LED light beam at least includes a red LED light beam; The light guide component is located at the light output side of the red laser, the green laser, the blue laser and the LED component, and is used to guide the red laser beam, the green laser beam, the blue laser beam and the LED beam to propagate in the same direction, thereby forming a target beam; The wavelength ranges of the red LED light beam and the red laser light beam partially overlap.

2. The hybrid light source system according to claim 1, characterized in that: The wavelength range of the red LED light beam is between 582 nm and 642 nm, and the wavelength range of the red laser light beam is between 635 nm and 656 nm.

3. The hybrid light source system according to claim 1, wherein: The red laser beam includes three or more laser beams with different wavelengths, and the bandwidth of each wavelength is within 6nm.

4. The hybrid light source system according to claim 1, wherein: The laser assembly further includes a phase vibration plate, which is located on the light-emitting side of at least one of the red laser, the green laser and the blue laser, and is used to suppress the coherence of the laser beam.

5. The hybrid light source system according to claim 1, wherein: It also includes a speckle elimination component, which is located on the light-emitting side of the light-guiding component and is used to suppress the coherence of the target light beam.

6. The hybrid light source system according to claim 5, characterized in that: The speckle elimination component includes a first light shaping component, a rotating diffusion wheel, and a second light shaping component which are sequentially arranged according to the propagation direction of the target light beam. The first light shaping component and the second light shaping component are used to shape the target light beam, and the rotating diffusion wheel is used to suppress the coherence of the target light beam.

7. The hybrid light source system according to claim 1, wherein: The light guide assembly includes a first dichroic mirror, a second dichroic mirror and a third dichroic mirror; The first dichroic mirror is located at the intersection of the red LED light beam and the red laser light beam, and the first dichroic mirror is used to combine the red LED light beam and the red laser light beam into a first light beam; The second dichroic mirror is located at the intersection of the green laser beam and the blue laser beam, and is used to guide the directions of the green laser beam and the blue laser beam to form a second beam propagating in the same direction; The third dichroic mirror is located at the intersection of the first light beam and the second light beam, and is used to guide the directions of the first light beam and the second light beam to form the target light beam propagating in the same direction.

8. The hybrid light source system according to claim 7, wherein: The reflectivity of the first dichroic mirror to the light beam with a wavelength longer than 632 nm reaches more than 90%, and the transmittance to the light beam with a wavelength shorter than 632 nm reaches more than 90%.

9. The hybrid light source system according to claim 1, wherein: It also includes a light absorbing component and a heat conducting component, and the light guiding component includes a first dichroic mirror; the first dichroic mirror is located at the intersection of the red LED light beam and the red laser light beam, the light absorbing component is located on the optical path of the red LED light beam reflected by the first dichroic mirror, the light absorbing component is used to absorb the reflected red LED light beam, and the heat conducting component is connected to the light absorbing component and extends outside the shell of the hybrid light source system.

10. A projection device, comprising a light valve assembly, a projection lens and the hybrid light source system according to any one of claims 1 to 9; The mixed light source system is used to provide the target light beam to the light valve assembly, and the light valve assembly adjusts the target light beam into an image beam and transmits the image beam to the projection lens. The projection lens is used to project the image beam out of the projection device to form a projection image on an external medium.

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