A laser and LED hybrid light source projection system

Abstract

The application relates to the technical field of light source illumination systems, in particular to a laser and LED mixed light source projection system which comprises an LED component for emitting a first light beam, a second light beam and a third light beam, a laser component for emitting a laser light beam, a light combining component and a first light splitter; the first light beam is shot to the light combining component, the second light beam is shot to the light combining component after passing through the first light splitter, the third light beam is shot to the light combining component after passing through the first light splitter, the light beam of the laser emitting component is shot to the light combining component after passing through the segmented light filter wheel, and the light combining component is used for light combining of the first light beam, the second light beam, the third light beam and the laser light beam. The brightness of the light source projection system can be improved through light combining, meanwhile, the production manufacturing cost can be effectively reduced through combined light output of the LED and the laser, and the problem that brightness and cost cannot be simultaneously considered in the related art light source system is solved.

Description

Technical Field

[0001] This invention relates to the field of light source lighting system technology, and more specifically to a laser and LED hybrid light source projection system. Background Technology

[0002] With the development of light source technology, using a single light source can no longer meet the brightness requirements. Especially after solid-state light sources such as light-emitting diodes (LEDs) and lasers (LDs) gradually entered the lighting and display market, high-power light sources commonly employ multiple light sources arranged in an array to ensure brightness. This involves using LED or LD arrays within the light source, combining the light from these sources to output the highest power output.

[0003] However, in practical applications, while using LEDs alone offers lower costs, their inherent brightness is limited, limiting their applicability to various scenarios and failing to meet the needs of multi-scenario light source displays. Conversely, while using semiconductor laser arrays provides sufficient brightness, their higher cost leads to higher manufacturing costs. In short, the light source systems in these technologies suffer from a difficulty in balancing brightness and cost. Summary of the Invention

[0004] Therefore, in order to improve the problem that light source systems in related technologies are difficult to balance brightness and cost, the present invention provides a light source projection system that combines laser and LED.

[0005] A laser and LED hybrid light source projection system includes an LED component, a laser component, and a light combining component;

[0006] The LED assembly includes a first light source for emitting a first beam, a second light source for emitting a second beam, and a third light source for emitting a third beam. The first beam and the second beam are in the same direction and parallel to each other. The third beam is perpendicular to the first beam and the second beam and is directed toward the first beam and the second beam. A first beam splitter is provided at the intersection of the second beam and the third beam.

[0007] The laser assembly is located on the side of the third light source that is away from the first and second light sources. The laser assembly includes a laser emitter capable of emitting red, green, or blue laser beams and an optical wheel disposed on the beam path of the laser assembly.

[0008] The beam combining component includes a beam combining mirror for combining the first beam, the second beam, the third beam, and the laser beam, and the beam combining mirror is disposed at the intersection of the first light source and the third light source.

[0009] The first beam is directed toward the beam combiner, the second beam is directed toward the beam combiner after passing through the first beam splitter, the third beam is directed toward the beam combiner after passing through the first beam splitter, and the beam from the laser emitter is directed toward the beam combiner after passing through the optical wheel.

[0010] Furthermore, the third light source includes a third light source module and a third collecting lens. The third light source module includes a blue light chip with green phosphor coated on its surface. The third collecting lens is located between the third light source module and the first beam splitter.

[0011] Furthermore, the laser emitter is located on the side of the beam combiner that is away from the first light source and is opposite to the first light source. The optical wheel is a scattering wheel. A first lens is provided between the laser emitter and the beam combiner. The laser beam passes through the scattering wheel and the lens and then shines on the beam combiner.

[0012] Furthermore, the LED assembly also includes a fourth light source for emitting a fourth beam. The fourth light source is located on the side of the first beam splitter away from the second light source and is opposite to the second light source. The fourth light source includes a fourth light source module and a fourth collecting lens. The fourth light source module is a blue LED. After passing through the first beam splitter, the fourth beam is directed towards the third light source module to excite the green light of the third light source module.

[0013] Furthermore, the laser emitter is located on the side of the first beam splitter away from the second light source and opposite to the second light source. The optical wheel is a segmented filter wheel. A laser compound eye is provided between the laser emitter and the first beam splitter. The blue light of the laser beam passes through the segmented filter wheel and the laser compound eye and is then directed towards the first beam splitter, and then towards the third light source module to excite the green light of the third light source module.

[0014] Furthermore, the laser assembly also includes a second beam splitter and a second lens. The second beam splitter is located on the side of the beam combiner away from the first light source and opposite to the first light source. The second lens is located between the second beam splitter and the beam combiner. The red and green light of the laser beam is reflected by the segmented filter wheel and first shines on the second beam splitter, and then shines on the beam combiner through the second lens.

[0015] Furthermore, the beam combiner includes a beam splitter and a beam splitting strip mounted on the beam splitter. The beam splitter has a through hole, and the beam splitting strip passes through and is fitted into the through hole of the beam splitter and is fixedly connected to the beam splitter.

[0016] Furthermore, the first light source includes a first light source module and a first collecting lens, the first light source module being a blue LED, and the first collecting lens being located between the first light source module and the light combining mirror.

[0017] Furthermore, the second light source includes a second light source module and a second collecting lens. The second light source module is a red LED, and the second collecting lens is located between the second light source module and the first beam splitter.

[0018] Furthermore, the light combining component also includes a light equalizing device disposed on the side of the light combining mirror away from the third light source, the light equalizing device comprising a compound eye or a square rod.

[0019] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0020] 1. This application discloses a laser and LED hybrid light source projection system, comprising an LED component, a laser component, and a beam combining component. The LED component emits a first beam, a second beam, and a third beam, which are then incident into the beam combining component. The laser component emits a red, green, or blue laser beam. The laser beam emitted by the laser component passes through an optical wheel and is incident into the beam combining component to combine with the first, second, and third beams for output. This improves the brightness of the light source projection system. Furthermore, using a combination of LEDs and lasers for beam combining output can effectively reduce manufacturing costs and address the problem in related technologies where light source systems struggle to balance brightness and cost.

[0021] 2. This application discloses a laser and LED hybrid light source projection system, which can emit a blue beam by setting a fourth light source component. After passing through a first beam splitter, the blue beam is directed to the third light source module of the third light source component and converted into a green fluorescent beam, thereby further improving the brightness.

[0022] 3. This application discloses a laser and LED hybrid light source projection system, which can filter the green light of the laser component by setting a segmented filter wheel. This allows the green laser beam of the laser component to be converted into a green fluorescent beam by the third light source module of the third light source component after passing through the first beam splitter, thereby further improving the brightness. This makes the light source projection system of this application compact in structure, and reduces manufacturing costs while further ensuring brightness. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a laser and LED hybrid light source projection system according to an embodiment of this application, using compound eye light homogenization.

[0025] Figure 2 This is a schematic diagram of the beam combiner in a laser and LED hybrid light source projection system according to this application.

[0026] Figure 3 This is a schematic diagram of a laser and LED hybrid light source projection system according to an embodiment of this application, using a square rod for light uniformation.

[0027] Figure 4 This is a timing diagram of a first embodiment of a laser and LED hybrid light source projection system according to this application;

[0028] Figure 5 This is a schematic diagram of a second embodiment of a laser and LED hybrid light source projection system according to this application;

[0029] Figure 6 This is a timing diagram of a second embodiment of a laser and LED hybrid light source projection system according to this application;

[0030] Figure 7 This is a schematic diagram of a third embodiment of a laser and LED hybrid light source projection system according to this application;

[0031] Figure 8 This is a timing diagram of a third embodiment of a laser and LED hybrid light source projection system according to this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. LED assembly; 11. First light source; 111. First light source module; 112. First collecting lens; 12. Second light source; 121. Second light source module; 122. Second collecting lens; 13. Third light source; 131. Third light source module; 132. Third collecting lens; 14. Fourth light source; 141. Fourth light source module; 142. Fourth collecting lens; 2. First beam splitter; 3. Laser assembly; 31. Laser emitter; 32. Optical wheel; 33. First lens; 34. Laser compound eye; 35. Second beam splitter; 36. Second lens; 4. Beam combining assembly; 41. Beam combining mirror; 411. Beam splitter; 412. Beam splitter strip; 4121. Reflective film layer; 42. Beam homogenizer. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1:

[0037] Reference Figure 1 A laser and LED hybrid light source projection system includes an LED component 1, a laser component 3, and a beam combiner 4. The LED component 1 includes a first light source element 11 for emitting a first beam, a second light source element 12 for emitting a second beam, and a third light source element 13 for emitting a third beam. The first beam and the second beam are in the same direction and parallel to each other, while the third beam is perpendicular to and directed towards both the first and second beams. A first beam splitter 2 is disposed at the intersection of the second and third beams.

[0038] The laser assembly 3 is located on the side of the third light source 13 away from the first light source 11 and the second light source 12. The laser assembly 3 includes a laser emitter 31 capable of emitting red, green, or blue laser beams and an optical wheel 32 disposed on the beam path of the laser assembly 3. The beam combining assembly 4 includes a beam combining mirror 41 for combining the first beam, the second beam, the third beam, and the laser beam. The beam combining mirror 41 is disposed at the intersection of the first and third light sources. The first beam is directed towards the beam combining mirror 41, the second beam is directed towards the beam combining mirror 41 after passing through the first beam splitter 2, the third beam is directed towards the beam combining mirror 41 after passing through the first beam splitter 2, and the beam from the laser emitter 31 is directed towards the beam combining mirror 41 after passing through the segmented filter wheel.

[0039] Specifically, the first light source 11 includes a first light source module 111 and a first collecting lens 112. The first light source module 111 is a blue LED, that is, the first beam is blue light. The first collecting lens 112 is located between the first light source module 111 and the beam combining mirror 41 of the beam combining assembly 4. When the first light source module 111 emits the first beam, the first beam passes through the first collecting lens 112 and is directed towards the beam combining mirror 41.

[0040] Similarly, the second light source 12 includes a second light source module 121 and a second collecting lens 122. The second light source module 121 is a red LED, that is, the second beam is red light. The second collecting lens 122 is located between the second light source module 121 and the first beam splitter 2. When the second light source module 121 emits the second beam, the second beam passes through the second collecting lens 122 and is directed towards the first beam splitter 2. The first beam splitter 2 reflects the second beam to the beam combiner 41.

[0041] The third light source 13 includes a third light source module 131 and a third collecting lens 132. The third light source module 131 includes a blue light chip coated with green phosphor. When the blue light chip emits a third beam, the beam is directed onto the green phosphor on the chip's surface and converted into a green fluorescent beam. The third collecting lens 132 is located between the third light source module 131 and the first beam splitter 2. After the third light source module 131 emits a third beam, the beam passes through the third collecting lens 132 and then is directed towards the first beam splitter 2. After passing through the third beam splitter, the beam is directed towards the beam combiner 41.

[0042] In this embodiment, the laser emitter 31 is located on the side of the beam combiner 41 away from the first light source 11 and is opposite to the first light source 11. Meanwhile, the optical wheel 32 is a scattering wheel, and a first lens 33 is disposed between the laser emitter 31 and the beam combiner 41. The laser beam passes through the scattering wheel and the lens before being directed towards the beam combiner 41. It should be noted that the laser emitter 31 can emit one, any combination of two, or all of red, green, or blue laser beams.

[0043] Reference Figure 2 The beam combiner 41 is used to combine the first beam, the second beam, the third beam, the fourth beam, and the laser beam. It includes a beam splitter 411 and beam-splitting strips 412 mounted on the beam splitter 411. Specifically, refer to... Figure 2Above is a schematic diagram of the beam combiner 41. The beam splitter 411 is a flat rectangular parallelepiped. A through-hole is formed in the middle of the beam splitter 411. The cross-section of the through-hole is rectangular to accommodate the beam splitter 412. The beam splitter 412 passes through and is fitted into the through-hole of the beam splitter 411. The beam splitter 412 and the beam splitter 411 are fixedly connected. The included angle between the beam splitter 412 and the beam splitter 411 is 90°. A reflective film layer 4121 is coated in the middle area of ​​the beam splitter 412. (Refer to...) Figure 2 Below is a schematic diagram of the use of the beam combiner 41. When a laser beam is directed towards the beam combiner 41, the laser beam passes through the through-hole of the beam splitter 411 and is directed towards the reflective film layer 4121 of the beam splitter 412. Subsequently, the reflective film layer 4121 reflects the laser beam. A relay lens is provided between the beam combiner 41 and the first beam splitter 2.

[0044] Reference Figure 1 and Figure 3 In addition, the light combining assembly 4 also includes a light equalizing device 42 disposed on the side of the light combining mirror 41 away from the third light source 13. The light equalizing device 42 includes a compound eye or a square rod, which can be selected as needed in practical applications. When a square rod is selected for light equalization, a lens needs to be added between the square rod and the light combining assembly 4.

[0045] Reference Figure 4 When using the light source projection system, the first light source 11, the second light source 12, and the third light source 13 will be turned on as the system timing changes. The system timing will switch between the blue segment, the red segment, and the green segment. The system timing cycle corresponds to the display frame rate. When the display frame rate is 60 frames, it is 1 / 60 second, and when the display frame rate is 144 frames, it is 1 / 144 second.

[0046] When the system timing is in the blue segment, the second light source 12 and the third light source 13 are turned off, and the first light source module 111 is turned on to emit the first beam. The first beam is directed at the beam splitter 411 of the beam combiner 41 as the blue primary color. At the same time, the laser emitter 31 emits a blue laser beam. After passing through the scattering wheel and the first lens 33, the blue laser beam is directed at the reflective film layer 4121 in the middle of the beam splitter 412 of the beam combiner 41. The blue laser beam, as a supplementary primary color, is combined with the first beam, which is the blue primary color, and then directed to the homogenizing device 42 for homogenization and output.

[0047] When the system timing is in the red segment, the first light source 11 and the third light source 13 are turned off, and the second light source module 121 is turned on to emit a second beam. The second beam is directed towards the first beam splitter 2, which reflects the second beam and directs it towards the beam splitter 411 of the beam combiner 41 as the red primary color. At the same time, the laser emitter 31 emits a red laser beam. After passing through the scattering wheel and the first lens 33, the red laser beam is directed towards the reflective film layer 4121 in the middle of the beam splitter 412 of the beam combiner 41. The red laser beam, as a supplementary primary color, is combined with the second beam, which is the red primary color, and then directed towards the homogenizing device 42.

[0048] When the system timing is in the green segment, the first and second light sources are turned off, and the third light source module 131 turns on to emit a third beam. The third beam passes through the third lens and is directed towards the first beam splitter 2. After passing through the first beam splitter 2, the third beam is directed towards the beam splitter 411 of the beam combiner 41 as the green primary color. At the same time, the laser emitter 31 emits a green laser beam. After passing through the overscattering wheel and the first lens 33, the green laser beam is directed towards the reflective film layer 4121 in the middle of the beam splitter 412 of the beam combiner 41. The green laser beam, as a supplementary primary color, is combined with the third beam, which is the green primary color, and then directed towards the homogenizing device 42.

[0049] By setting up LED component 1 and laser component 3 in this way, and using light combining component 4 to combine the light from LED component 1 and laser component 3 for output, the brightness of the light source output by the light source projection system can be guaranteed. Taking advantage of the fact that the scattering wheel does not have high requirements for the stability of the light source, the combination of LED component 1 and laser component 3 can effectively reduce the production and manufacturing cost of the light source projection system.

[0050] Example 2:

[0051] Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that the LED component 1 also includes a fourth light source 14.

[0052] Specifically, in order to further improve the output brightness of the light source projection system, the LED component 1 also includes a fourth light source 14 for emitting a fourth beam. The fourth light source 14 is located on the side of the first beam splitter 2 away from the second light source 12 and is opposite to the second light source 12. The fourth light source 14 includes a fourth light source module 141 and a fourth collecting lens 142. The fourth light source module 141 is a deep blue LED, that is, the fourth beam is deep blue light. After the fourth beam passes through the fourth collecting lens 142, it is directed towards the first beam splitter 2. After being reflected by the first beam splitter 2, the fourth beam is directed towards the third light source module 131. When the fourth beam hits the shell of the third light source module 131 coated with green phosphor, the fourth beam will be converted from a deep blue beam into a green fluorescent beam.

[0053] By setting a fourth light source 14, when the system timing is in the green segment, the first and second light sources are turned off, and the third light source module 131 is turned on to emit a third beam as the green primary color. In addition, the fourth light source module 141 also emits a fourth beam that hits the third light source module 131 and is converted into a green fluorescent beam as a supplementary primary color, distinct from the laser emitter 31. That is, the laser emitter 31 emits a green laser beam, which, as a supplementary primary color, combines with the third beam (which is the green primary color) and the fourth beam (which is another supplementary primary color) and is then directed towards the homogenizing device 42, further improving the output brightness of the light source projection system. It should be noted that in practical applications, the fourth light source 14 is not necessary and can be added or omitted as needed.

[0054] Example 3:

[0055] Reference Figure 7 and Figure 8 The difference between this embodiment and embodiment one is that the position of the laser emitter 31 is different, and the laser emitter 31 is used as a component to excite the green light of the third light source.

[0056] Specifically, the laser emitter 31 is located on the side of the first beam splitter 2 away from the second light source 12 and is opposite to the second light source 12. In this embodiment, the optical wheel 32 is a segmented filter wheel, also known as a color filter wheel. Its structure consists of a glass disk coated with a beam-splitting film, thus having a region that reflects blue light, reflects red light, and reflects green light while transmitting blue light. The regions of the segmented filter wheel can be switched by rotating it. A laser compound eye 34 is provided between the laser emitter 31 and the first beam splitter 2. The blue light of the laser beam passes through the transmission section of the segmented filter wheel and the laser compound eye 34 before being directed towards the first beam splitter 2, and then towards the third light source module 131 to excite the green light of the third light source module 131.

[0057] The laser assembly 3 also includes a second beam splitter 35 and a second lens 36. The second beam splitter 35 is located on the side of the beam combiner 41 away from the first light source and opposite to the first light source. The second lens 36 is located between the second beam splitter 35 and the beam combiner 41. The red and green light of the laser beam is reflected by the reflective section of the segmented filter wheel and then directed towards the second beam splitter 35, and finally passes through the second lens 36 before being directed towards the beam combiner 41.

[0058] When the system timing is in the blue segment, the second light source 12 and the third light source 13 are turned off, and the first light source module 111 is turned on to emit the first beam. The first beam is directed at the beam splitter 411 of the beam combiner 41 as the blue primary color. At the same time, the laser emitter 31 emits a blue laser beam, rotates the segmented filter wheel to the blue light reflection segment, and after being reflected by the segmented filter wheel reflection segment, the blue laser beam is directed at the second beam splitter 35. After being reflected by the second beam splitter 35, the blue laser beam is directed at the reflective film layer 4121 of the beam splitter 411 in the beam combiner 41. The blue laser beam, as a supplementary primary color, is combined with the first beam, which is the blue primary color, and then directed at the homogenizing device 42 for homogenization and output.

[0059] When the system timing is in the red segment, the first light source 11 and the third light source 13 are turned off, and the second light source module 121 is turned on to emit a second beam. The second beam is directed towards the first beam splitter 2, which reflects the second beam and directs it towards the beam splitter 411 of the beam combiner 41 as the red primary color. At the same time, the laser emitter 31 emits a red laser beam, rotates the segmented filter wheel to the red light reflection segment, and after being reflected by the segmented filter wheel reflection segment, the red laser beam is reflected by the second beam splitter 35 and then directed towards the reflective film layer 4121 of the beam splitter 411 in the beam combiner 41. The red laser beam, as a supplementary primary color, is combined with the second beam, which is the red primary color, and then directed towards the homogenizing device 42.

[0060] When the system timing is in the green segment, the first and second light sources are turned off, and the third light source module 131 turns on to emit a third beam. The third beam passes through the third lens and is directed towards the first beam splitter 2. After passing through the first beam splitter 2, the third beam is directed towards the beam splitter 411 of the beam combiner 41 as the green primary color. At the same time, the laser emitter 31 emits both a green laser beam and a blue laser beam. At this time, the segmented filter wheel rotates to reflect the green light through the blue light segment. The green laser beam is reflected by the segmented filter wheel to the second beam splitter 35. The second beam splitter 35 reflects the green laser beam to the beam splitter 412 of the beam combiner 41. The blue laser beam passes through the segmented filter wheel and the laser compound eye 34 and is directed towards the first beam splitter 2. The first beam splitter 2 reflects it to the third light source module 131, where it is converted into a green fluorescent beam. The green fluorescent beam, as a supplementary primary color, is combined with the third beam (which serves as the green primary color) and the green laser beam and then directed towards the homogenizing device 42.

[0061] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A projection system using a hybrid laser and LED light source, characterized in that, It includes LED components (1), laser components (3), and light combining components (4); The LED assembly (1) includes a first light source (11) for emitting a first light beam, a second light source (12) for emitting a second light beam, and a third light source (13) for emitting a third light beam. The first light beam and the second light beam are in the same direction and parallel to each other. The third light beam is perpendicular to the first light beam and the second light beam and is directed toward the first light beam and the second light beam. A first beam splitter (2) is provided at the intersection of the second light beam and the third light beam. The laser component (3) is located on the side of the third light source (13) away from the first light source (11) and the second light source (12). The laser component (3) includes a laser emitter (31) that can emit red, green or blue laser beams and an optical wheel (32) disposed on the beam path of the laser component (3). The beam combining component (4) includes a beam combining mirror (41) for combining the first beam, the second beam, the third beam and the laser beam, and the beam combining mirror (41) is disposed at the intersection of the first light source and the third light source. The first beam is directed toward the beam combiner (41), the second beam is directed toward the beam combiner (41) after passing through the first beam splitter (2), the third beam is directed toward the beam combiner (41) after passing through the first beam splitter (2), and the beam of the laser emitter (31) is directed toward the beam combiner (41) after passing through the optical wheel (32). The third light source (13) includes a third light source module (131) and a third collecting lens (132). The third light source module (131) includes a blue light chip with green phosphor coated on its surface. The third collecting lens (132) is located between the third light source module (131) and the first beam splitter (2). The laser emitter (31) is located on the side of the first beam splitter (2) away from the second light source (12) and opposite to the second light source (12). The optical wheel (32) is a segmented filter wheel. A laser compound eye (34) is provided between the laser emitter (31) and the first beam splitter (2). The blue light of the laser beam passes through the segmented filter wheel and the laser compound eye (34) and then shines on the first beam splitter (2), and then shines on the third light source module (131) to excite the green light of the third light source module (131).

2. The laser and LED hybrid light source projection system according to claim 1, characterized in that, The laser assembly (3) further includes a second beam splitter (35) and a second lens (36). The second beam splitter (35) is located on the side of the beam combiner (41) away from the first light source and opposite to the first light source. The second lens (36) is located between the second beam splitter (35) and the beam combiner (41). The red and green light of the laser beam are reflected by the segmented filter wheel and first shot to the second beam splitter (35), and then shot to the beam combiner (41) through the second lens (36).

3. A laser and LED hybrid light source projection system according to claim 1 or 2, characterized in that, The beam combiner (41) includes a beam splitter (411) and a beam splitter strip (412) mounted on the beam splitter (411). The beam splitter (411) has a through hole, and the beam splitter strip (412) passes through and is fitted into the through hole of the beam splitter (411) and is fixedly connected to the beam splitter (411).

4. The laser and LED hybrid light source projection system according to claim 3, characterized in that, The first light source (11) includes a first light source module (111) and a first collecting lens (112). The first light source module (111) is a blue LED, and the first collecting lens (112) is located between the first light source module (111) and the light combining mirror (41).

5. A laser and LED hybrid light source projection system according to claim 4, characterized in that, The second light source (12) includes a second light source module (121) and a second collecting lens (122). The second light source module (121) is a red LED, and the second collecting lens (122) is located between the second light source module (121) and the first beam splitter (2).

6. The laser and LED hybrid light source projection system according to claim 5, characterized in that, The light combining component (4) further includes a light equalizing device (42) disposed on the side of the light combining mirror (41) away from the third light source (13), and the light equalizing device (42) includes a compound eye or a square rod.

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