Illuminating system and projection equipment

Abstract

The invention provides an illumination system and projection equipment. The lighting system comprises a light source module, a wavelength conversion device, a first light guide assembly, a second light guide assembly and a micro-lens array module. The light source module is used for providing a plurality of green and blue laser beams. The wavelength conversion device is used for generating fluorescent light beams. The first light guiding assembly and the second light guiding assembly are used for guiding a fluorescent light beam and a green laser light beam respectively. The fluorescent light beams form fluorescent light spots on the first area of the first side face of the micro-lens array module. The plurality of green laser beams form a plurality of green light spots on a second area of the first side surface of the micro-lens array module. The first region is adjacent to the second region. The illumination system and the projection equipment provided by the invention avoid energy loss and have good light uniformity.

Description

Technical Field

[0001] This invention relates to a lighting system and a projection device. Background Technology

[0002] A projector includes an illumination system, a light modulation system, and a projection lens. The light beam provided by the illumination system mainly comes from three-color pure lasers, laser-excited phosphors to generate fluorescence, and light-emitting diodes (LEDs). Currently, three-color pure lasers have problems such as laser speckle and brightness limitations due to packaging. Therefore, combining three-color pure lasers with phosphors that can generate fluorescence can solve these problems to some extent.

[0003] However, since the wavelengths of green or red lasers overlap with some of the emission wavelengths of fluorescence, when combining green or red lasers and fluorescence, some optical elements (e.g., partially reflective lenses and beam splitters) placed in the paths of the green or red lasers or fluorescence often need to sacrifice the overlapping wavelengths to achieve optical path overlap, resulting in light energy loss. If the green or red laser and fluorescence are incident at different positions on the homogenizing element to avoid the aforementioned light loss, it may lead to poor light uniformity of the illumination system.

[0004] The "Background Art" paragraph is only used to help understand the content of this invention. Therefore, the content disclosed in the "Background Art" paragraph may include some known technologies that are not known to those skilled in the art. The content disclosed in the "Background Art" paragraph does not mean that the content or the problem to be solved by one or more embodiments of this invention was known or recognized by those skilled in the art prior to this application. Summary of the Invention

[0005] This invention provides a lighting system and projection device that avoids energy loss and has good light uniformity.

[0006] Other objects and advantages of the present invention can be further understood from the technical features disclosed herein.

[0007] To achieve one, some, or all of the above objectives, or other objectives, an illumination system is provided according to an embodiment of the present invention. This system provides an illumination beam and includes a light source module, a wavelength conversion device, a first light guiding component, a second light guiding component, and a microlens array module. The light source module provides multiple green laser beams and multiple blue laser beams. The wavelength conversion device includes a wavelength conversion region and a non-wavelength conversion region, which are used to enter the transmission path of the multiple blue laser beams at different times. The wavelength conversion region converts the multiple blue laser beams to generate a fluorescent beam. The microlens array module is disposed on the transmission path of the multiple green laser beams, the multiple blue laser beams, and the fluorescent beam. The multiple green laser beams, the multiple blue laser beams, and the fluorescent beam enter the microlens array module from a first side surface, the first side surface including adjacent first and second regions. The multiple green laser beams, the multiple blue laser beams, and the fluorescent beam exit from a second side surface of the microlens array module as the illumination beam. A first optical guiding component is disposed on the transmission path of the plurality of blue laser beams to guide the plurality of blue laser beams from the light source module to the wavelength conversion device, and to guide the fluorescent beam from the wavelength conversion region to the first region on the first side of the microlens array module, wherein the fluorescent beam forms a fluorescent spot on the first region. A second optical guiding component is disposed on the transmission path of the plurality of green laser beams to guide the plurality of green laser beams to the second region on the first side of the microlens array module, wherein the plurality of green laser beams form a plurality of green spots on the second region.

[0008] According to another embodiment of the present invention, a projection device is provided, including an illumination system, a light modulation system and a projection lens as described above, wherein the illumination system is used to provide the illumination beam, the light modulation system is used to convert the illumination beam to provide an image beam, and the projection lens is used to project the image beam out of the projection device.

[0009] Based on the above, in the lighting system according to an embodiment of the present invention, the fluorescent beam is not blocked by the second light guiding component, and therefore the fluorescent spot and the green spot do not overlap on the light-incident surface of the first microlens array element. Accordingly, energy loss within the lighting system can be avoided. Furthermore, the multiple spots of the green laser beam and the fluorescent beam on the light-incident surface of the second microlens array element at least partially overlap, giving the lighting system good light uniformity.

[0010] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0011] Figure 1 A schematic diagram of a projection device according to an embodiment of the present invention is shown.

[0012] Figure 2A , Figure 2C as well as Figure 2E A schematic diagram of a lighting system according to a first embodiment of the present invention is shown.

[0013] Figure 2B , Figure 2D as well as Figure 2F Show respectively Figure 2A , Figure 2C as well as Figure 2E A schematic diagram of the light spot on the first microlens array element.

[0014] Figure 2G The power curves of each laser element in the lighting system of the first embodiment are shown.

[0015] Figure 2H A schematic diagram of the wavelength conversion device of the first embodiment is shown.

[0016] Figure 2I A schematic diagram showing the emission wavelength of a tri-color laser element and a fluorescent beam generated using green phosphor is shown.

[0017] Figure 2J A schematic diagram showing the emission wavelength of a tri-color laser element and a fluorescent beam generated using yellow phosphor is shown.

[0018] Figure 2K A schematic diagram showing the emission wavelength of a tri-color laser element and a fluorescent beam generated using red phosphor is shown.

[0019] Figure 3A , Figure 3B , Figure 3C as well as Figure 3D A schematic diagram of the lighting system according to the second embodiment is shown.

[0020] Figure 3E Show Figure 3A , Figure 3B , Figure 3C as well as Figure 3D A schematic diagram of the light spot on the first microlens array element.

[0021] Figure 3F The power curves of each laser element in the lighting system according to the second embodiment of the present invention are shown.

[0022] Figure 3G A schematic diagram of the wavelength conversion device according to the second embodiment is shown.

[0023] Figure 4A , Figure 4B , Figure 4C as well as Figure 4D A schematic diagram of the lighting system according to the third embodiment is shown.

[0024] Figure 4E Show Figure 4A , Figure 4B , Figure 4C as well as Figure 4D A schematic diagram of the light spot on the first microlens array element.

[0025] Figure 5A A schematic diagram of a lighting system according to a fourth embodiment of the present invention is shown.

[0026] Figure 5B Show Figure 5A A schematic diagram of the light spot on the first microlens array element.

[0027] Figure 6A A schematic diagram of a lighting system according to a fifth embodiment of the present invention is shown.

[0028] Figure 6B Show Figure 6A A schematic diagram of the light spot on the first microlens array element. Detailed Implementation

[0029] The foregoing descriptions and other technical contents, features, and effects of this invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms used in the following embodiments, such as up, down, left, right, front, or back, are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0030] Reference Figure 1 The diagram illustrates a projection device according to an embodiment of the present invention. The projection device 100 includes an illumination system 1, a light modulation system 2, and a projection lens 3. The illumination system 1 provides an illumination beam. The light modulation system 2 converts the illumination beam to provide an image beam. The projection lens 3 projects the image beam out of the projection device 100 to form an image on a projection surface 4.

[0031] Reference Figures 2A to 2H . Figure 2A , Figure 2C as well as Figure 2E A schematic diagram of a lighting system according to a first embodiment of the present invention is shown. Figure 2B , Figure 2D as well as Figure 2F Show respectively Figure 2A , Figure 2C as well as Figure 2E A schematic diagram of the light spot on the first microlens array element. Figure 2GThe power curves of each laser element in the lighting system of the first embodiment are shown. Figure 2H A schematic diagram of the wavelength conversion device of the first embodiment is shown.

[0032] The lighting system 1 includes a light source module 30, a wavelength conversion device 40, a first light guiding component 10, a second light guiding component 20, and a microlens array module 50. The light source module 30 provides multiple green laser beams GL and multiple blue laser beams BL. The wavelength conversion device 40 includes a wavelength conversion region 401 and a non-wavelength conversion region 402, which are used to enter the transmission path of the multiple blue laser beams BL at different times. The wavelength conversion region 401 converts the multiple blue laser beams BL to generate a fluorescent beam PL. The microlens array module 50 is positioned on the transmission path of the multiple green laser beams GL, multiple blue laser beams BL, and fluorescent beam PL. The multiple green laser beams GL, multiple blue laser beams BL, and fluorescent beam PL enter the microlens array module 50 from its first side 504, which includes adjacent first regions A1 and second regions A2. The multiple green laser beams GL, multiple blue laser beams BL, and fluorescent beam PL exit from the second side 505 of the microlens array module 50 as illumination beams. The first optical guiding component 10 is disposed in the transmission path of multiple blue laser beams BL, for guiding the multiple blue laser beams BL from the light source module 30 to the wavelength conversion device 40, and guiding the fluorescent beam PL from the wavelength conversion region 401 to the first region A1 of the first side surface 504 of the microlens array module 50, whereby the fluorescent beam PL forms a fluorescent spot PS on the first region A1. The second optical guiding component 20 is disposed in the transmission path of multiple green laser beams GL, for guiding the multiple green laser beams GL to the second region A2 of the first side surface 504 of the microlens array module 50, whereby the multiple green laser beams GL form multiple green spots GS on the second region A2.

[0033] The light source module 30 includes a plurality of blue laser elements 301 and a plurality of green laser elements 302. The laser elements are, for example, laser diodes, but are not limited thereto. The plurality of blue laser elements 301 are arranged along the Z-direction to provide a plurality of blue laser beams BL. The plurality of green laser elements 302 are arranged along the Z-direction to provide a plurality of green laser beams GL.

[0034] The microlens array module 50 includes a first microlens array element 501, a focusing lens 503, and a second microlens array element 502 arranged sequentially along the Y direction, wherein the Y direction is perpendicular to the Z direction. The focusing lens 503 is located between the first microlens array element 501 and the second microlens array element 502. The microlens array module 50 includes a first side surface 504 for light entry and a second side surface 505 for light exit. Specifically, the first microlens array element 501 has a first side surface 504, and the second microlens array element 502 has a second side surface 505. Multiple green laser beams GL, multiple blue laser beams BL, and a fluorescent beam PL enter through the first side surface 504 of the first microlens array element 501, pass through the focusing lens 503, and exit through the second side surface 505 of the second microlens array element 502. The first microlens array element 501 has an incident surface 5011 and an exit surface 5012, and the incident surface 5011 of the first microlens array element 501 is the first side surface 504. The first microlens array element 501 has a light-incident surface 5011 with a plurality of first microlens structures 501C, and a light-exiting surface 5012 with a plurality of second microlens structures corresponding to the plurality of first microlens structures 501C. The central axis of each first microlens structure 501C on the light-incident surface 5011 overlaps with the central axis of the corresponding second microlens structure on the light-exiting surface 5012. The curvature of each first microlens structure 501C on the light-incident surface 5011 and the curvature of the corresponding second microlens structure on the light-exiting surface 5012 may be the same or different. In one embodiment, the shape of the first microlens structure 501C may be hexagonal or quadrilateral, but is not limited thereto. The second microlens array element 502 has a light-incident surface 5021 and a light-exiting surface 5022, and the light-exiting surface 5022 of the second microlens array element 502 is the second side surface 505. The second microlens array element 502 has multiple micromirror structures on its light-incident surface 5021 and corresponding multiple micromirror structures on its light-exit surface 5022. The central axis of each micromirror structure on the light-incident surface 5021 overlaps with the central axis of the corresponding micromirror structure on the light-exit surface 5022. The curvature of each micromirror structure on the light-incident surface 5021 and the curvature of the corresponding micromirror structure on the light-exit surface 5022 may be the same or different. In one embodiment, the shape of the micromirror structure on the light-incident surface 5021 may be rectangular, but it is not limited thereto. In this embodiment, both the first microlens array element 501 and the second microlens array element 502 are integral double-sided microlens array structure elements, but they are not limited thereto. In some embodiments, the first microlens array element 501 and the second microlens array element 502 may be composed of two single-sided microlens array structure elements arranged back to back.

[0035] Please refer to Figure 2HThe wavelength conversion device 40 may include a color wheel, which is a rotating component, and includes a wavelength conversion region 401 and a non-wavelength conversion region 402 arranged in a ring or C-shape around a rotation axis. By rotating the color wheel, the wavelength conversion region 401 and the non-wavelength conversion region 402 can enter the transmission paths of multiple blue laser beams BL at different times. The wavelength conversion region 401 is equipped with phosphor to convert the multiple blue laser beams BL into a fluorescent beam PL. Specifically, the wavelength conversion region 401 may include a red light region 4011 and a green light region 4012. The red light region 4011 is used to enter the transmission path of multiple blue laser beams BL in the red light sequence, and the green light region 4012 is used to enter the transmission path of multiple blue laser beams BL in the green light sequence. In one embodiment, both the red light region 4011 and the green light region 4012 may be yellow phosphor used to convert into a yellow fluorescent beam PL, but this is not a limitation. In other embodiments, the red light region 4011 may be a red phosphor used to convert into a red fluorescent beam PL, and the green light region 4012 may be a green phosphor used to convert into a green fluorescent beam PL. The non-wavelength conversion region 402 may be provided with a reflector to reflect the multiple blue laser beams BL in the transmission path of the multiple blue laser beams BL entering the blue light sequence.

[0036] Specifically, refer to Figure 2G In the red light timing T RL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL, and the power P of multiple green laser elements 302. GL A value of 0 indicates no green laser beam GL is provided. In the green light timing T... GL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL and multiple green laser elements 302 with power P. GL Greater than 0 to provide multiple green laser beams GL. In blue light timing T BL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL, and the power P of multiple green laser elements 302. GL The value is 0, and no green laser beam GL is provided. Furthermore, the light source module 30 periodically repeats the following... Figure 2G The red light timing T shown RL Green light timing T GL And Blu-ray timing T BL .

[0037] like Figure 2E , Figure 2F as well as Figure 2G As shown, in the red light timing T RLMultiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and the red light region 4011 of the wavelength conversion region 401 enters the transmission path of the multiple blue laser beams BL. The phosphor on the red light region 4011 of the wavelength conversion region 401 is irradiated by the multiple blue laser beams BL and generates a fluorescent beam PL. The fluorescent beam PL is transmitted to the microlens array module 50 via the guidance of the first light guiding component 10, and forms a fluorescent spot PS on the first region A1 of the light incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501, as shown. Figure 2F As shown.

[0038] like Figure 2C , Figure 2D as well as Figure 2G As shown, in the green light timing T GL Multiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and multiple green laser elements 302 are enabled to provide multiple green laser beams GL. At this time, the green region 4012 of the wavelength conversion region 401 enters the transmission path of the multiple blue laser beams BL. The phosphor on the green region 4012 of the wavelength conversion region 401 is irradiated by the multiple blue laser beams BL and generates a fluorescent beam PL. The fluorescent beam PL is guided by the first optical guiding component 10 to the microlens array module 50, and forms a fluorescent spot PS on the first region A1 of the light-incident surface 5011 of the first microlens array element 501. Simultaneously, the second optical guiding component 20 guides the multiple green laser beams GL to the microlens array module 50, causing the multiple green laser beams GL to form multiple green spots GS on the second region A2 of the light-incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501, such as... Figure 2D As shown.

[0039] like Figure 2A , Figure 2B as well as Figure 2G As shown, in the blue light timing T BL Multiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and a non-wavelength conversion region 402 enters the transmission path of the multiple blue laser beams BL. The multiple blue laser beams BL are reflected in the non-wavelength conversion region 402. The first optical guiding component 10 guides the multiple blue laser beams BL from the non-wavelength conversion region 402 to the microlens array module 50, so that the multiple blue laser beams BL form multiple blue spots BS on the first region A1 of the light incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501, such as... Figure 2B As shown.

[0040] By means of Figure 2GAs shown in the periodic timing sequence, the illumination system 1 of this embodiment can output an illumination beam from the second microlens array element 502 of the microlens array module 50. The illumination beam is emitted from the light-emitting surface 5022 (i.e., the second side surface 505) of the second microlens array element 502 and includes the aforementioned red light timing sequence T. RL Green light timing T GL And Blu-ray timing T BL The fluorescent beam PL, the green laser beam GL, and the blue laser beam BL.

[0041] In this embodiment, the first optical guiding component 10 includes a beam splitter 101, a reflector 102, and a refractive mirror 103. The beam splitter 101 is located between the light source module 30 and the wavelength conversion device 40. The beam splitter 101 includes an optically effective region. The optically effective region refers to the area that allows multiple blue laser beams BL from the light source module 30 to pass through and allows fluorescent beams PL from the wavelength conversion device 40 to be reflected. Specifically, the optically effective region includes a first sub-effective region 1011 and a second sub-effective region 1012 that do not overlap. The first sub-effective region 1011 is located on the transmission path of the multiple blue laser beams BL from the light source module 30, and allows the multiple blue laser beams BL transmitted from the light source module 30 to the wavelength conversion device 40 to pass through, and reflects the fluorescent beam PL from the wavelength conversion device 40. The second sub-effective region 1012 allows the first portion of the multiple blue laser beams BL from the non-wavelength conversion region 402 to be reflected, allows the second portion of the multiple blue laser beams BL from the non-wavelength conversion region 402 to pass through, and reflects the fluorescent beam PL from the wavelength conversion device 40. The second effective region 1012 is not located on the transmission path of the multiple blue laser beams BL from the light source module 30 to the wavelength conversion device 40. A reflector 102 is disposed on the transmission path of the second portion of the multiple blue laser beams BL to reflect the second portion of the multiple blue laser beams BL. A curved mirror 103 is located between the beam splitter 101 and the wavelength conversion device 40 to focus the multiple blue laser beams BL from the beam splitter 101 onto the wavelength conversion device 40. Accordingly, as... Figure 2A as well as Figure 2B As shown, multiple blue laser beams BL form two rows of blue light spots BS on the first region A1 of the incident surface 5011, improving the light uniformity of the illumination system 1.

[0042] In this embodiment, as Figure 2C as well as Figure 2DAs shown, the second light guiding component 20 includes a partially reflective and partially permeable lens 201 and a reflector 202 arranged along the X direction, wherein the X, Y, and Z directions are perpendicular to each other. The second region A2 of the first side surface 504 of the microlens array module 50 includes a first sub-region A21 and a second sub-region A22, which are respectively adjacent to the first region A1, such that the first region A1 is located between the first sub-region A21 and the second sub-region A22, and the first sub-region A21, the first region A1, and the second sub-region A22 are arranged sequentially along the X direction. The partially reflective and partially permeable lens 201 is used to reflect a first portion of multiple green laser beams GL from the light source module 30 and allow a second portion of the multiple green laser beams GL to pass through. In one embodiment, the partially reflective and partially permeable lens 201 can achieve a 50% penetration and 50% reflection ratio for the multiple green laser beams GL; however, in other embodiments, the penetration and reflection ratio of the partially reflective and partially permeable lens 201 can be adjusted as needed and is not limited to this.

[0043] The first portion of multiple green laser beams GL is transmitted to the first sub-region A21 of the second region A2 by a partially reflective, partially permeable lens 201, forming multiple green light spots GS arranged along the Z-direction. A reflector 202 is disposed on the transmission path of the second portion of the multiple green laser beams GL to reflect the second portion of the multiple green laser beams GL to the second sub-region A22 of the second region A2 of the first side surface 504 of the microlens array module 50. The multiple green laser beams GL form multiple green light spots GS arranged along the Z-direction in the second sub-region A22 of the second region A2. Accordingly, the multiple green laser beams GL form multiple green light spots GS on both the first sub-region A21 and the second sub-region A22, improving the light uniformity of the illumination system 1.

[0044] Please refer to Figures 2I to 2K The diagrams illustrate the emission bands of a three-color laser element and a fluorescent beam generated using green, yellow, and red phosphors, respectively. Since the emission band of the fluorescent beam PL in this embodiment completely covers the emission band of the green laser beam GL, if the second light guide component 20 is positioned in the transmission path of the fluorescent beam PL, partial reflection through the lens 201 may cause some bands of the fluorescent beam PL to be reflected, and the reflector 202 may also block the passage of the fluorescent beam PL, resulting in energy loss. Therefore, in this embodiment, the orthographic projection of the optically effective area of ​​the beam splitter 101 onto the light-incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501 does not overlap with the orthographic projection of the second light guide component 20 onto the light-incident surface 5011 (i.e., the first side surface 504). This avoids energy loss in the fluorescent beam PL.

[0045] Furthermore, in this embodiment, the fluorescent spot PS is formed on the first region A1 of the incident surface 5011 (i.e., the first side surface 504), and the green spot GS is formed on the second region A2 that is adjacent to the first region A1 and does not overlap with it (e.g., ...). Figure 2D As shown), by placing the focusing lens 503 between the first microlens array element 501 and the second microlens array element 502, the spots of multiple green laser beams GL on the incident surface 5021 of the second microlens array element 502 can at least partially overlap the spot of the fluorescent beam PL (as shown). Figure 2C (As shown). More specifically, as Figure 2A , Figure 2C as well as Figure 2E As shown, on the light-incident surface 5021 of the second microlens array element 502, multiple spots of the fluorescent beam PL, multiple green laser beams GL, and multiple blue laser beams BL at least partially overlap, forming an overlapping region, thereby giving the illumination system 1 good light uniformity. In some embodiments, the ratio of the area of ​​the overlapping region to the area of ​​the spot of the fluorescent beam PL on the light-incident surface 5021 is greater than 0.5, but is not limited thereto.

[0046] To fully illustrate the various embodiments of the present invention, other embodiments will be described below. It must be noted that the following embodiments use the same element reference numerals and some content as those in the foregoing embodiments, with the same reference numerals representing the same or similar elements, and descriptions of identical technical content omitted. For explanations of the omitted parts, please refer to the foregoing embodiments; these will not be repeated in the following embodiments.

[0047] Reference Figures 3A to 3G . Figure 3A , Figure 3B , Figure 3C as well as Figure 3D A schematic diagram of the lighting system according to the second embodiment is shown. Figure 3E Show Figure 3A , Figure 3B , Figure 3C as well as Figure 3D A schematic diagram of the light spot on the first microlens array element. Figure 3F The power curves of each laser element in the lighting system according to the second embodiment of the present invention are shown. Figure 3G A schematic diagram of the wavelength conversion device according to the second embodiment is shown.

[0048] The lighting system 1 includes a light source module 30, a wavelength conversion device 40, a first light guiding component 10, a second light guiding component 20, and a microlens array module 50.

[0049] The light source module 30 includes multiple blue laser elements 301, multiple green laser elements 302, and multiple red laser elements 3031 and 3032. The multiple blue laser elements 301 are arranged along the Z-direction to provide multiple blue laser beams BL. The multiple green laser elements 302 are arranged along the Z-direction to provide multiple green laser beams GL. The multiple red laser elements 3031 and 3021 are each arranged along the Z-direction to provide multiple red laser beams RL. In this embodiment, the multiple red laser elements 3031 and 3021 are arranged in a two-column array, but this is not a limitation.

[0050] Please refer to Figure 3G Unlike the wavelength conversion device 40 in the first embodiment, in this embodiment, the wavelength conversion region 401' of the wavelength conversion device 40' may include a red light region 4011, a green light region 4012, and a yellow light region 4013. The yellow light region 4013 is used to enter the transmission path of multiple blue laser beams BL in the yellow light timing sequence. The yellow light region 4013 may be at least one of yellow phosphor for converting into a yellow fluorescent beam PL, green phosphor for converting into a green fluorescent beam PL, and red phosphor for converting into a red fluorescent beam PL. In one embodiment, the wavelength conversion device 40 as in the first embodiment may also be used, but it is not limited thereto.

[0051] Reference Figure 3F In the red light timing T RL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL and multiple green laser elements 302 with power P. GL The power is 0, no green laser beam GL is provided, and the power P of multiple red laser elements 3031 and 3032 is 0. RL Greater than 0, to provide multiple red laser beams RL.

[0052] In green light timing T GL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL and multiple green laser elements 302 with power P. GL Greater than 0, to provide multiple green laser beams GL, and multiple red laser elements 3031, 3032 with power P RL A value of 0 indicates that no red laser beam (RL) is provided.

[0053] In blue light timing T BL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL and multiple green laser elements 302 with power P. GLThe power is 0, no green laser beam GL is provided, and the power P of multiple red laser elements 3031 and 3032 is 0. RL A value of 0 indicates that no red laser beam (RL) is provided.

[0054] In the yellow light time series T YL The power P of multiple blue laser elements 301 BL Greater than 0, to provide multiple blue laser beams BL and multiple green laser elements 302 with power P. GL Greater than 0, to provide multiple green laser beams GL, and multiple red laser elements 3031, 3032 with power P RL Greater than 0, to provide multiple red laser beams RL.

[0055] The light source module repeats 30 cycles periodically, as follows: Figure 3F The red light timing T shown RL Green light timing T GL Blue light timing T BL and yellow light timing T YL .

[0056] Reference Figure 3B and Figure 3EIn this embodiment, the second light guiding component 20 is also disposed on the transmission path of the multiple red laser beams RL, to guide the multiple red laser beams RL to the second region A2 of the light incident surface 5011 (i.e., the first side surface 504) of the microlens array module 50, where the multiple red laser beams RL form multiple red light spots RS on the second region A2. Specifically, the second light guiding component 20 includes a partially reflective and partially penetrating lens 201, a reflector 202, a first red light beam splitter 203, and a second red light beam splitter 204. The first red light beam splitter 203 is disposed on the transmission path of the first part of the multiple red laser beams RL (corresponding to the multiple red laser elements 3031), to reflect the first part of the multiple red laser beams RL to the microlens array module 50, and to allow the first part of the multiple green laser beams GL to pass through. The first portion of multiple red laser beams RL is transmitted by the first red beam splitter 203 of the second optical guiding assembly 20 to the first sub-region A21 of the second region A2 of the incident surface 5011 (i.e., the first side surface 504), to form multiple red spots RS in the first sub-region A21. The second red beam splitter 204 is disposed on the transmission path of the second portion of the multiple red laser beams RL (corresponding to multiple red laser elements 3032) to reflect the second portion of the multiple red laser beams RL to the microlens array module 50 and allow the second portion of multiple green laser beams GL to pass through. The second portion of the multiple red laser beams RL is transmitted by the second red beam splitter 204 of the second optical guiding assembly 20 to the second sub-region A22 of the second region A2 of the incident surface 5011 (i.e., the first side surface 504), to form multiple red spots RS in the second sub-region A22. The partially reflective transmissive lens 201 at least partially overlaps with the orthographic projection of the first red light beam splitter 203 onto the light-incident surface 5011 of the first microlens array element 501, and the reflective mirror 202 at least partially overlaps with the orthographic projection of the second red light beam splitter 204 onto the light-incident surface 5011 of the first microlens array element 501. This allows for a reduction in the size of the lighting system 1.

[0057] like Figure 3D , Figure 3E as well as Figure 3F As shown, in the red light timing T RLMultiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and the red light region 4011 of the wavelength conversion region 401' enters the transmission path of the multiple blue laser beams BL. The phosphor on the red light region 4011 of the wavelength conversion region 401' is irradiated by the multiple blue laser beams BL and generates a fluorescent beam PL. The fluorescent beam PL is guided by the first light guiding component 10 to the microlens array module 50, and forms a fluorescent spot PS on the first region A1 of the light incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501. At the same time, multiple red laser beams RL provided by multiple red laser elements 3031 are reflected by the first red light beam splitter 203, and then form multiple red spots RS arranged along the Z direction on the first sub-region A21 of the second region A2. Multiple red laser beams RL provided by multiple red laser elements 3032 are reflected by the second red light beam splitter 204, and then form multiple red spots RS arranged along the Z direction on the second sub-region A22 of the second region A2. Multiple red laser beams RL form multiple red light spots RS on the first sub-region A21 and the second sub-region A22 respectively, which improves the light uniformity of the illumination system 1.

[0058] like Figure 3C , Figure 3E as well as Figure 3F As shown, in the green light timing T GL Multiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and the green light region 4012 of the wavelength conversion region 401' enters the transmission path of the multiple blue laser beams BL. The phosphor on the green light region 4012 of the wavelength conversion region 401' is irradiated by the multiple blue laser beams BL and generates a fluorescent beam PL. The fluorescent beam PL is guided by the first light guiding component 10 and transmitted to the microlens array module 50, forming a fluorescent spot PS on the first region A1 of the light incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501. At the same time, the first part of the multiple green laser beams GL provided by the multiple green laser elements 302 is reflected by the partially reflective partially permeable lens 201, and the second part of the multiple green laser beams GL is transmitted. The first part of the multiple green laser beams GL is reflected by the partially reflective partially permeable lens 201, and after passing through the first red light beam splitter 203, it forms multiple green spots GS on the first sub-region A21 of the second region A2. The second part of the multiple green laser beams GL that pass through the penetrating and reflecting lens 201 are reflected on the reflecting mirror 202, and then pass through the second red beam splitter 204 to form multiple green light spots GS on the second sub-region A22 of the second region A2.

[0059] like Figure 3A , Figure 3E as well as Figure 3FAs shown, in the blue light timing T BL Multiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and a non-wavelength conversion region 402 enters the transmission path of the multiple blue laser beams BL. The multiple blue laser beams BL are reflected in the non-wavelength conversion region 402 and return to the first optical guiding assembly 10. The first optical guiding assembly 10 guides the multiple blue laser beams BL from the non-wavelength conversion region 402 to the first microlens array element 501, so that the multiple blue laser beams BL form multiple blue spots BS on the first region A1 of the incident surface 5011 (i.e., the first side surface 504), such as... Figure 3E As shown.

[0060] like Figure 3B , Figure 3E as well as Figure 3F As shown, in the yellow light timing T YL Multiple blue laser elements 301 are enabled to provide multiple blue laser beams BL, and the yellow light region 4013 of the wavelength conversion region 401' enters the transmission path of the multiple blue laser beams BL. The phosphor on the yellow light region 4013 of the wavelength conversion region 401' is irradiated by the multiple blue laser beams BL and generates a fluorescent beam PL. The fluorescent beam PL is transmitted to the microlens array module 50 via the guidance of the first light guiding component 10, and forms a fluorescent spot PS on the first region A1 of the light incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501. At the same time, the first part of the multiple green laser beams GL provided by the multiple green laser elements 302 is reflected by the partially reflective partially permeable lens 201, and the second part of the multiple green laser beams GL is transmitted. The first part of the multiple green laser beams GL is reflected by the partially reflective partially permeable lens 201, and after passing through the first red light beam splitter 203, forms multiple green spots GS on the first sub-region A21 of the second region A2. The second portion of multiple green laser beams GL, passing through lens 201, is reflected by mirror 202 and then passes through second red beam splitter 204, forming multiple green spots GS in the second sub-region A22 of second region A2. Simultaneously, multiple red laser beams RL provided by multiple red laser elements 3031 are reflected by first red beam splitter 203, forming multiple red spots RS in the first sub-region A21 of second region A2. Similarly, multiple red laser beams RL provided by multiple red laser elements 3032 are reflected by second red beam splitter 204, forming multiple red spots RS in the second sub-region A22 of second region A2.

[0061] By means of Figure 3FAs shown in the periodic timing sequence, the illumination system 1 of this embodiment can output an illumination beam from the second microlens array element 502 of the microlens array module 50. The illumination beam is emitted from the light-emitting surface 5022 (i.e., the second side surface 505) of the second microlens array element 502 and includes the aforementioned red light timing sequence T. RL Green light timing T GL Blue light timing T BL and yellow light timing T YL The fluorescent beam PL, the red laser beam RL, the green laser beam GL, and the blue laser beam BL.

[0062] In this embodiment, the positions of multiple red light spots RS on the first sub-region A21 and the second sub-region A22 can at least partially overlap with the positions of multiple green light spots GS on the first sub-region A21 and the second sub-region A22. Accordingly, the size of the light-incident surface 5011 of the first microlens array element 501 can be reduced. However, this is not a limitation; in some embodiments, the positions of the multiple red light spots RS and the multiple green light spots GS may not overlap at all. Furthermore, the number of multiple red light spots RS on the first sub-region A21 and the second sub-region A22 may be the same as or different from the number of multiple green light spots GS.

[0063] Please refer to Figures 2I to 2K Since the emission band of the fluorescent beam PL in this embodiment completely covers the emission bands of the red laser beam RL and the green laser beam GL, if the second light guiding component 20 is placed on the transmission path of the fluorescent beam PL, the partial reflection of the partial-passing lens 201 and the first and second red light beam splitters 203 and 204 may cause some bands in the fluorescent beam PL to be reflected, and the reflecting mirror 202 may also block the passage of the fluorescent beam PL, resulting in energy loss. Therefore, in this embodiment, the orthographic projection of the optically effective area of ​​the beam splitter 101 on the light-incident surface 5011 (i.e., the first side surface 504) of the first microlens array element 501 does not overlap with the orthographic projection of the second light guiding component 20 on the light-incident surface 5011 (i.e., the first side surface 504). Accordingly, energy loss of the fluorescent beam PL can be avoided.

[0064] Furthermore, in this embodiment, the fluorescent spot PS is formed on the first region A1 of the incident surface 5011 (i.e., the first side surface 504), and multiple green spots GS and multiple red spots RS are formed on the second region A2 adjacent to the first region A1 and not overlapping (e.g., ...). Figure 3E As shown), by placing the focusing lens 503 between the first microlens array element 501 and the second microlens array element 502, multiple green laser beams GL and multiple red laser beams RL on the light incident surface 5021 of the second microlens array element 502 can at least partially overlap the spot of the fluorescent beam PL (as shown). Figure 3C (As shown). More specifically, as Figure 3A , Figure 3B , Figure 3C as well as Figure 3D As shown, on the light-incident surface 5021 of the second microlens array element 502, multiple spots of the fluorescent beam PL, multiple red laser beams RL, multiple green laser beams GL, and multiple blue laser beams BL at least partially overlap to form an overlapping area, thereby giving the illumination system 1 good light uniformity.

[0065] It should be noted that, Figure 3E Simultaneously shown Figure 3A , Figure 3B , Figure 3C as well as Figure 3D The schematic diagram of the light spots on the first microlens array element 501 is a schematic diagram of the superposition of light spots of various colors in all time sequences. However, the timing of multiple light spots appearing on the light-incident surface 5011 of the first microlens array element 501 is based on the above content.

[0066] In this embodiment, multiple green laser elements 302 are located between multiple blue laser elements 301 and multiple red laser elements 3031, 3032. Correspondingly, a partially reflective transmissive lens 201 is located between the first light guiding assembly 10 and the first red beam splitter 203, and a reflector 202 is located between the first light guiding assembly 10 and the second red beam splitter 204. However, the present invention is not limited thereto. According to another embodiment of the present invention, multiple blue laser elements 301 are disposed between multiple green laser elements 302 and multiple red laser elements 3031, 3032. Correspondingly, the first light guiding assembly 10 is disposed between the partially reflective transmissive lens 201 and the first red beam splitter 203, and the first light guiding assembly 10 is disposed between the reflector 202 and the second red beam splitter 204.

[0067] Reference Figures 4A to 4E . Figure 4A , Figure 4B , Figure 4C as well as Figure 4D A schematic diagram of the lighting system according to the third embodiment is shown. Figure 4E Show Figure 4A , Figure 4B , Figure 4C as well as Figure 4D A schematic diagram of the light spot on the first microlens array element 501.

[0068] In the aforementioned first and second embodiments, the non-wavelength conversion region 402 of the wavelength conversion devices 40 and 40' is used to reflect multiple blue laser beams BL, i.e., the wavelength conversion devices 40 and 40' are reflective color wheels. However, in this third embodiment, the wavelength conversion device 40 is a transmissive color wheel, meaning that the non-wavelength conversion region 402 is used to allow multiple blue laser beams BL to pass through. Furthermore, the first light guiding component 60 of this embodiment is used to guide the multiple blue laser beams BL from the non-wavelength conversion region 402 to the microlens array module 50. The multiple blue laser beams BL, guided by the first light guiding component 60, form multiple blue spots BS on the second region A2 of the light-incident surface 5011 (i.e., the first side surface 504) of the microlens array module 50. Specifically, the first light guiding component 60 includes a red-green light splitter 601, a curved mirror 602, a steering component, a partially reflective and partially transmissive lens 605, and a reflector 606. Reflectors 603 and 604 constitute the steering component. The red-green light splitter 601 is located between the light source module 30 and the wavelength conversion device 40. It allows multiple blue laser beams BL from the light source module 30 to pass through and reflects fluorescent beams PL from wavelength conversion regions 4011, 4012, and 4013, thus transmitting the fluorescent beams PL to the first region A1 of the microlens array module 50. The steering assembly, which may consist of mirrors 603 and 604, is positioned at the end of the wavelength conversion device 40 relatively far from the light source module 30. It transmits the multiple blue laser beams BL passing through the non-wavelength conversion region 402 to the partially reflective partially permeable lens 605. The partially reflective partially permeable lens 605 allows the first portion of the multiple blue laser beams BL from the wavelength conversion device 40 to pass through and reflects the second portion of the multiple blue laser beams BL. A mirror 606 is positioned along the transmission path of the first portion of the multiple blue laser beams BL to reflect the first portion of the multiple blue laser beams BL. In one embodiment, the partially reflective partially penetrating lens 605 can transmit and reflect multiple blue laser beams BL in a 50% ratio. However, in other embodiments, the transmission and reflection ratio of the partially reflective partially penetrating lens 605 can be adjusted as needed and is not limited to this.

[0069] The first portion of multiple blue laser beams BL is transmitted by the first optical guiding component 60 to the first sub-region A21 of the microlens array module 50 to form multiple blue light spots BS in the first sub-region A21. The second portion of the multiple blue laser beams BL is transmitted by the first optical guiding component 60 to the second sub-region A22 of the microlens array module 50 to form multiple blue light spots BS in the second sub-region A22.

[0070] Furthermore, in this embodiment, the fluorescent spot PS is formed on the first region A1 of the incident surface 5011 (i.e., the first side surface 504), and multiple green spots GS and multiple red spots RS are formed on the second region A2 adjacent to the first region A1 and not overlapping (e.g., ...). Figure 4E As shown), by placing the focusing lens 503 between the first microlens array element 501 and the second microlens array element 502, multiple green laser beams GL and multiple red laser beams RL on the light incident surface 5021 of the second microlens array element 502 can at least partially overlap the spot of the fluorescent beam PL (as shown). Figure 4C (As shown). More specifically, as Figure 4A , Figure 4B , Figure 4C as well as Figure 4D As shown, on the light-incident surface 5021 of the second microlens array element 502, multiple spots of the fluorescent beam PL, multiple red laser beams RL, multiple green laser beams GL, and multiple blue laser beams BL at least partially overlap to form an overlapping area, thereby giving the illumination system 1 good light uniformity.

[0071] Reference Figure 5A as well as Figure 5B . Figure 5A A schematic diagram of a lighting system according to a fourth embodiment of the present invention is shown. Figure 5B Show Figure 5A A schematic diagram of the light spot on the first microlens array element. For ease of understanding, the optical path of the illumination system 1 at different times is shown in the diagram. Figure 1 and with Figure 5A As shown.

[0072] The difference between this fourth embodiment and the aforementioned second embodiment is that the second optical guiding component 70 in this embodiment includes a red beam splitter 701 and a reflector 702. The reflector 702 reflects multiple green laser beams GL provided by multiple green laser elements 302. The red beam splitter 701 reflects multiple red laser beams RL provided by multiple red laser elements 3031 and 3032, and allows the multiple green laser beams GL from the reflector 702 to pass through. The multiple green laser beams GL from the light source module 30 sequentially pass through the reflector 702 and the red beam splitter 701, forming multiple green spots GS on the second region A2. The multiple red laser beams RL from the light source module 30 are reflected by the red beam splitter 701, and then form multiple red spots RS on the second region A2.

[0073] In this embodiment, the fluorescent spot PS is formed on the first region A1 of the light-incident surface 5011 (i.e., the first side surface 504), and multiple green spots GS and multiple red spots RS are formed on a second region A2 that is adjacent to the first region A1 and does not overlap (e.g., ...). Figure 5B As shown), by placing the focusing lens 503 between the first microlens array element 501 and the second microlens array element 502, multiple green laser beams GL and multiple red laser beams RL on the light incident surface 5021 of the second microlens array element 502 can at least partially overlap the spot of the fluorescent beam PL (as shown). Figure 5A (As shown). More specifically, as Figure 5A As shown, on the light-incident surface 5021 of the second microlens array element 502, multiple spots of the fluorescent beam PL, multiple red laser beams RL, multiple green laser beams GL, and multiple blue laser beams BL at least partially overlap to form an overlapping area, thereby giving the illumination system 1 good light uniformity.

[0074] Reference Figure 6A as well as Figure 6B . Figure 6A A schematic diagram of a lighting system according to a fifth embodiment of the present invention is shown. Figure 6B Show Figure 6A A schematic diagram of the light spot on the first microlens array element. For ease of understanding, the optical path of the illumination system 1 at different times is shown in the diagram. Figure 1 and with Figure 6A As shown.

[0075] The difference between this fifth embodiment and the aforementioned fourth embodiment is that the second optical guiding component 80 in this embodiment includes a red beam splitter 701, a reflector 702, and a partially reflective and partially penetrating lens 703. The partially reflective and partially penetrating lens 703 is used to reflect the first portion of the multiple green laser beams GL provided by the multiple green laser elements 302, and allows the second portion of the multiple green laser beams GL to pass through. In one embodiment, the partially reflective and partially penetrating lens 703 can achieve a 50% penetration and 50% reflection ratio for the multiple green laser beams GL; however, in other embodiments, the penetration and reflection ratio of the partially reflective and partially penetrating lens 703 can be adjusted as needed and is not limited to this. The reflector 702 is disposed on the transmission path of the second portion of the multiple green laser beams GL to reflect the second portion of the multiple green laser beams GL. The red beam splitter 701 is used to reflect the multiple red laser beams RL provided by the multiple red laser elements 3031 and 3032, and allows the first portion and the second portion of the multiple green laser beams GL from the partially reflective and partially penetrating lens 703 and the reflector 702 to pass through. The first portion of multiple green laser beams GL, after passing through the red beam splitter 701, forms multiple green spots GS1 on the second region A2. The second portion of the multiple green laser beams GL, after passing through the red beam splitter 701, forms multiple green spots GS2 on the second region A2. Accordingly, the multiple green laser beams GL can form two rows of multiple green spots GS on the second region A2.

[0076] In this embodiment, the fluorescent spot PS is formed on the first region A1 of the light-incident surface 5011 (i.e., the first side surface 504), and multiple green spots GS and multiple red spots RS are formed on a second region A2 that is adjacent to the first region A1 and does not overlap (e.g., ...). Figure 6B As shown), by placing the focusing lens 503 between the first microlens array element 501 and the second microlens array element 502, multiple green laser beams GL and multiple red laser beams RL on the light incident surface 5021 of the second microlens array element 502 can at least partially overlap the spot of the fluorescent beam PL (as shown). Figure 6A (As shown). More specifically, as Figure 6A As shown, on the light-incident surface 5021 of the second microlens array element 502, multiple spots of the fluorescent beam PL, multiple red laser beams RL, multiple green laser beams GL, and multiple blue laser beams BL at least partially overlap to form an overlapping area, thereby giving the illumination system 1 good light uniformity.

[0077] In summary, in the lighting system according to embodiments of the present invention, the fluorescent beam is not blocked by the second light guiding component, and therefore the fluorescent spot and the green spot (or red spot) do not overlap on the light-incident surface of the first microlens array element. Accordingly, energy loss within the lighting system can be avoided. Furthermore, the multiple spots of the fluorescent beam, multiple red laser beams, multiple green laser beams, and multiple blue laser beams at least partially overlap on the light-incident surface of the second microlens array element, giving the lighting system good light uniformity.

[0078] This invention utilizes an optical path design to ensure that, in a single time sequence, the spot positions of light rays with wavelength overlap with the fluorescent beam (such as green or red laser) are separated from the fluorescent spot when incident on the microlens array module. Furthermore, the microlens array module spatially combines the fluorescent and laser beams, achieving the combined light effect without sacrificing the wavelength overlap, thus improving the light uniformity of the illumination system.

[0079] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the invention are still within the scope of this patent. Furthermore, no embodiment or claim of the present invention needs to achieve all the objectives, advantages, or features disclosed in the invention. In addition, the abstract and title (invention title) are only used to assist in patent document retrieval and are not intended to limit the scope of the invention. Furthermore, the terms "first," "second," etc., mentioned in this specification or claims are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

Claims

1. A lighting system for providing a light beam, characterized in that, The lighting system includes a light source module, a wavelength conversion device, a first light guiding component, a second light guiding component, and a microlens array module, wherein: The light source module is used to provide multiple green laser beams and multiple blue laser beams; The wavelength conversion device includes a wavelength conversion region and a non-wavelength conversion region. The wavelength conversion region and the non-wavelength conversion region are used to enter the transmission path of the plurality of blue laser beams at different times. The wavelength conversion region is used to convert the plurality of blue laser beams to generate a fluorescent beam. The microlens array module is configured on the transmission paths of the plurality of green laser beams, the plurality of blue laser beams, and the fluorescent beam. The plurality of green laser beams, the plurality of blue laser beams, and the fluorescent beam are incident on the microlens array module from a first side surface, the first side surface including a first region and a second region, and the plurality of green laser beams, the plurality of blue laser beams, and the fluorescent beam are emitted from a second side surface of the microlens array module as the illumination beam. The first optical guiding component is disposed on the transmission path of the plurality of blue laser beams to guide the plurality of blue laser beams from the light source module to the wavelength conversion device, and to guide the fluorescent beam from the wavelength conversion region to the first region on the first side of the microlens array module, wherein the fluorescent beam forms a fluorescent spot on the first region; and The second light guiding component is disposed on the transmission path of the plurality of green laser beams to guide the plurality of green laser beams to the second region on the first side of the microlens array module, wherein the plurality of green laser beams form a plurality of green light spots on the second region.

2. The lighting system according to claim 1, characterized in that, The first optical guiding component is also used to guide the plurality of blue laser beams from the non-wavelength conversion region to the first region on the first side of the microlens array module, wherein the plurality of blue laser beams form a plurality of blue spots on the first region.

3. The lighting system according to claim 2, characterized in that, The first optical guiding component includes a beam splitter located between the light source module and the wavelength conversion device. The beam splitter includes an optically effective region that allows the plurality of blue laser beams from the light source module to pass through and reflects the fluorescent beams from the wavelength conversion device. The orthographic projection of the optically effective region onto the first side of the microlens array module does not overlap with the orthographic projection of the second optical guiding component onto the first side of the microlens array module.

4. The lighting system according to claim 3, characterized in that, The first optical guiding component further includes a reflector, wherein the optically effective region includes a first sub-effective region and a second sub-effective region. The first sub-effective region is used to allow the plurality of blue laser beams transmitted from the light source module to the wavelength conversion device to pass through. The second sub-effective region is used to allow a first portion of the plurality of blue laser beams from the non-wavelength conversion region to be reflected and to allow a second portion of the plurality of blue laser beams from the non-wavelength conversion region to pass through. The reflector is disposed on the transmission path of the second portion of the plurality of blue laser beams to reflect the second portion of the plurality of blue laser beams.

5. The lighting system according to claim 1, characterized in that, The second light guiding component includes a reflector for reflecting the plurality of green laser beams to the second region on the first side of the microlens array module.

6. The lighting system according to claim 5, characterized in that, The second light guiding component further includes a partially reflective and partially penetrating lens for reflecting a first portion of the plurality of green laser beams from the light source module and allowing a second portion of the plurality of green laser beams to pass through. The reflector of the second light guiding component is disposed on the transmission path of the second portion of the plurality of green laser beams to reflect the second portion of the plurality of green laser beams.

7. The lighting system according to claim 6, characterized in that, The second region of the first side of the microlens array module includes a first sub-region and a second sub-region. The first sub-region and the second sub-region are respectively adjacent to the first region, such that the first region is located between the first sub-region and the second sub-region. The first part of the plurality of green laser beams is transmitted to the first sub-region by the partially reflective partially permeable lens, and the second part of the plurality of green laser beams is transmitted to the second sub-region by the reflector of the second light guiding component.

8. The lighting system according to claim 1, characterized in that, The light source module is also used to provide multiple red laser beams, and the second light guiding component is also disposed on the transmission path of the multiple red laser beams to guide the multiple red laser beams to the second region on the first side of the microlens array module, wherein the multiple red laser beams form multiple red light spots on the second region.

9. The lighting system according to claim 8, characterized in that, The second optical guiding component includes a first red beam splitter, which is disposed on the transmission path of the first part of the plurality of red laser beams to reflect the first part of the plurality of red laser beams to the microlens array module and allow the first part of the plurality of green laser beams to pass through.

10. The lighting system according to claim 9, characterized in that, The second light guiding component further includes a second red light beam splitter, which is disposed on the transmission path of the second part of the plurality of red laser beams to reflect the second part of the plurality of red laser beams to the microlens array module and allow the second part of the plurality of green laser beams to pass through.

11. The lighting system according to claim 10, characterized in that, The second region on the first side of the microlens array module includes a first sub-region and a second sub-region. The first sub-region and the second sub-region are respectively adjacent to the first region, such that the first region is located between the first sub-region and the second sub-region. The first portion of the plurality of red laser beams is transmitted to the first sub-region by the second light guiding component, and the second portion of the plurality of red laser beams is transmitted to the second sub-region by the second light guiding component.

12. The lighting system according to claim 1, characterized in that, The first optical guiding component is also used to guide the plurality of blue laser beams from the non-wavelength conversion region to the microlens array module, wherein the plurality of blue laser beams are guided by the first optical guiding component to form a plurality of blue light spots on the second region of the first side of the microlens array module.

13. The lighting system according to claim 12, characterized in that, The first optical guiding component includes a red-green light splitter, a steering component, a partially reflective and partially transmissive lens, and a reflector. The red-green light splitter is located between the light source module and the wavelength conversion device, allowing the plurality of blue laser beams from the light source module to pass through and reflecting the fluorescent beams from the wavelength conversion region, thereby transmitting the fluorescent beams to the first region of the microlens array module. The steering component is disposed at one end of the wavelength conversion device relatively away from the light source module, and is used to transmit the plurality of blue laser beams passing through the non-wavelength conversion region to the partially reflective and partially transmissive lens. The partially reflective and partially transmissive lens is used to allow a first portion of the plurality of blue laser beams from the wavelength conversion device to pass through and reflect a second portion of the plurality of blue laser beams. The reflector is disposed on the transmission path of the first portion of the plurality of blue laser beams, and is used to reflect the first portion of the plurality of blue laser beams.

14. The lighting system according to claim 13, characterized in that, The second region on the first side of the microlens array module includes a first sub-region and a second sub-region, which are respectively adjacent to the first region, such that the first region is located between the first sub-region and the second sub-region. The first portion of the plurality of blue laser beams is transmitted to the first sub-region of the microlens array module by the first light guiding component, and the second portion of the plurality of blue laser beams is transmitted to the second sub-region of the microlens array module by the first light guiding component.

15. The lighting system according to claim 1, characterized in that, The microlens array module includes a first microlens array element, a focusing lens, and a second microlens array element, wherein the focusing lens is located between the first microlens array element and the second microlens array element. The first microlens array element has a first side surface, and the second microlens array element has a second side surface. The plurality of green laser beams, the plurality of blue laser beams, and the fluorescent beam enter through the first side surface of the first microlens array element, pass through the focusing lens, and exit through the second side surface of the second microlens array element.

16. The lighting system according to claim 15, characterized in that, The first microlens array element is an integrated double-sided microlens array structure element, or is composed of two single-sided microlens array structure elements arranged back to back, and the second microlens array element is an integrated double-sided microlens array structure element, or is composed of two single-sided microlens array structure elements arranged back to back.

17. The lighting system according to claim 15, characterized in that, The light-incident surface of the first microlens array element is the first side surface, which has a plurality of first micromirror structures. The light-exit surface of the first microlens array element has a plurality of second micromirror structures, and the plurality of first micromirror structures correspond to the plurality of second micromirror structures respectively.

18. The lighting system according to claim 15, characterized in that, The plurality of green laser beams, the plurality of blue laser beams, and the fluorescent beam at least partially overlap on the incident surface of the second microlens array element to form an overlapping region.

19. The lighting system according to claim 18, characterized in that, The ratio of the area of ​​the overlapping region to the area of ​​the spot of the fluorescent beam on the second side of the second microlens array element is greater than 0.

5.

20. A projection device, characterized in that, The projection device includes an illumination system, a light modulation system, and a projection lens according to any one of claims 1-19, wherein: the illumination system is used to provide the illumination beam, the light modulation system is used to convert the illumination beam to provide an image beam, and the projection lens is used to project the image beam out of the projection device.

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