Projection apparatus and illumination system therefor

Abstract

This application provides a projection device and its lighting system. The lighting system includes a light source module, an LED light source assembly, an optical path integration component, and a lens array element. A first laser beam emitted from the light source module is incident on the lens array element. The lens array element includes a first array region with a plurality of first microlenses and a second array region connected to the first array region and having a plurality of second microlenses. The first laser beam passes through the first array region of the lens array element to form a first beam. The first beam and an output beam from the LED light source assembly are incident from opposite sides of the optical path integration component. The first beam is guided by the optical path integration component and passes through the second array region of the lens array element to form a second beam. The output beam is guided by the optical path integration component to form an output colored beam that penetrates the second array region of the lens array element. The lighting beam includes at least one of the output colored beam and the second beam.

Description

Technical Field

[0001] This application relates to the technical field of projection equipment, and in particular to a projection device and its lighting system. Background Technology

[0002] The "Background Art" paragraph is only used to help understand the content of this application. Therefore, the content disclosed in the "Background Art" paragraph may include some prior art that is not known to those skilled in the art. The content disclosed in the "Background Art" paragraph does not mean that the content or the problems to be solved by one or more embodiments of this application were known or understood by those skilled in the art before the filing of this application.

[0003] The laser beam emitted by a laser source is a highly coherent laser beam. This beam concentrates most of its light within a small area, creating a speckle effect. When the laser beam is applied to a projection device, the projection device ultimately uses an image modulation device to form an image from the beam. This image modulation device is a component that modulates the beam using a two-dimensional optical structure to form an image. Therefore, the laser beam must undergo multiple optical components to disrupt its coherence and diffuse uniformly to form a two-dimensional beam before it can be used in the projection device.

[0004] In existing projection equipment lighting systems, dynamic components such as diffuser wheels and actuators are included. These dynamic components cause the lighting system to occupy a large space, which is not conducive to the miniaturization of projection equipment. Summary of the Invention

[0005] This application provides a projection device and its lighting system to solve the problem that the lighting system of the projection device in the prior art is not easy to miniaturize due to the setting of dynamic components.

[0006] Other objects and advantages of the present invention can be further understood from the technical features disclosed herein. To achieve one or more of the above objects or other related objects, an embodiment of the lighting system of this application provides an illumination beam, comprising a light source module, an LED light source assembly, an optical path integrator, and a lens array element. The light source module emits a first laser beam, which is incident on the lens array element along a first direction. The LED light source assembly emits an output beam. The lens array element includes a first array region extending along a second direction and a second array region arranged along the first or second direction and connected to the first array region. The first array region is provided with a plurality of first microlenses, and the second array region is provided with a plurality of second microlenses. The first and second directions are perpendicular to each other. The first laser beam passes through the first array region of the lens array element to form a first beam. The optical path integrator is disposed on the optical path of the output beam and the first beam. The first beam and the output beam from the LED light source assembly are incident from opposite sides of the optical path integrator. The first beam is guided by the optical path integrator to the second array region of the lens array element and forms a second beam after passing through the second array region of the lens array element. The output beam is guided by the optical path integration component to form an output colored beam. The output colored beam penetrates the second array region of the lens array element. The illumination beam includes at least one of the output colored beam and the second beam.

[0007] One embodiment of the projection device of this application includes the aforementioned illumination system, light modulation module, and projection lens. At least one of the output color beam and the second beam exits from the illumination system to become an illumination beam. The light modulation module is disposed in the optical path of the illumination beam to receive the illumination beam and convert it into an image beam. The projection lens is disposed in the optical path of the image beam to project the image beam out of the projection device to generate an image.

[0008] Optionally, the light modulation module includes a prism assembly and at least one light modulation component, wherein the illumination beam passes sequentially through the prism assembly and at least one light modulation component, and is converted into the image beam by the at least one light modulation component.

[0009] Optionally, the second direction is parallel to the optical axis of the projection lens.

[0010] As stated above, this application has at least one of the following beneficial effects:

[0011] The projection device and its illumination system of this application achieve a homogenized light effect by sequentially passing the laser beam emitted by the light source module through the first and second array regions of the lens array element, and by passing the output beam emitted by the LED light source through the second array region. In this way, the laser beam, which is prone to producing light spots, can be completely eliminated by passing through the first and second array regions of the lens array element. This eliminates the need for dynamic homogenization components used in existing technologies, such as diffuser wheels and actuators, which facilitates miniaturization of the projection device and reduces operating noise. Attached Figure Description

[0012] Figure 1 The diagram shown is a schematic diagram of a projection device according to the first embodiment of this application.

[0013] Figure 1A This is a schematic diagram of the first laser component according to the first embodiment of this application.

[0014] Figure 1B This is a schematic diagram of the second laser component according to the first embodiment of this application.

[0015] Figure 2 The image shown is a perspective view of a projection device according to a second embodiment of this application.

[0016] Figure 3 The image shown is a side view of a projection device according to a second embodiment of this application.

[0017] Figure 4 The diagram shows the timing sequence of the first output light, second output light, third output light, fourth output light, and LED beam of the LED light source in the lighting system of this application.

[0018] Figure 5 This is a schematic diagram showing the spectrum of the first beam incident on the optical path assembly.

[0019] Figure 6 This is a schematic diagram showing the spectrum of the light beam that can be reflected by the optical path integration component.

[0020] Figure 7 This is a schematic diagram showing the spectrum of an LED beam emitted by an LED light source.

[0021] Figure 8 This diagram shows the spectrum of the output beam formed after the output beam of the LED light source is incident on the filter.

[0022] Figure 9 This diagram shows the spectrum of the reflected light after the output beam is incident on the optical path assembly.

[0023] Figure 10 The diagram shown is a schematic representation of a projection device according to a third embodiment of this application.

[0024] Figure 11 The diagram shown is a schematic representation of a projection device according to the fourth embodiment of this application.

[0025] Figure 12 The diagram shown is a schematic representation of a projection device according to the fifth embodiment of this application.

[0026] Figure 13 The diagram shown is a schematic representation of a projection device according to the sixth embodiment of this application.

[0027] Figure 14 The diagram shown is a schematic representation of a projection device according to the seventh embodiment of this application.

[0028] Figure 15 The diagram shown is a schematic diagram of a projection device according to the eighth embodiment of this application.

[0029] Figure 16 The diagram shows a perspective view of the light path integration component, lens array element, and light path bending assembly of the lighting system of the projection device according to the ninth embodiment of this application.

[0030] Figure 17 The diagram shown is a schematic representation of a projection device according to the tenth embodiment of this application.

[0031] Component labeling explanation

[0032] 1: Projection equipment; 10, 10A, 10B, 10C, 10D, 10E: Lighting system; 11, 11_2, 11_3, 11_4, 11_5, 11_6, 11_7: Light source module; 12: LED light source assembly; 13: Optical path integration component; 14, 14A, 14B, 14C, 14D: Lens array element; 15: Optical path bending assembly; 20: Light modulation module; 21: Optical component; 22: Prism assembly; 23: Light modulation group Component; 30: Projection lens; 111: First laser assembly; 111a: First light source; 111ad: First light-emitting component; 111b: Second light source; 111bd: Second light-emitting component; 111c: First light combining component; 111d: Third light source; 111dd: Third light-emitting component; 111e: Fourth light source; 111ed: Fourth light-emitting component; 111R: First laser reflector; 112: Second laser assembly; 112a: Third light source; 11 2ad: Third light-emitting element; 112b: Fourth light-emitting element; 112bd: Fourth light-emitting element; 112c: Second light-combining element; 112R: Second laser reflector; 121: LED light source; 122: Filter; 141: First array region; 142: Second array region; 143: Third array region; 151: First reflector; 152: Second reflector; 153: Third reflector; 154: Fourth reflector; Ac: Actuator; L1: First beam; LL1: First laser beam; LLL1: First output beam; LL2: Second laser beam; LLL3: Third output beam; LLL4: Fourth output beam; L3: Third beam; LC: Output color beam; LI: Image beam; LLO: LED beam; LM: Illumination beam; L0: Output beam; D1: First direction; D2: Second direction; D3: Third direction; P: Emission period; P1: First timing; P2: Second timing; P3: Third timing. Detailed Implementation

[0033] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application.

[0034] For ease of description, spatial relation terms such as “below,” “under,” “lower than,” “below,” “above,” and “upper” may be used herein to describe the relationship between one component or feature shown in the accompanying drawings and other components or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the accompanying drawings for devices in use or operation.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Please see Figure 1 ,in Figure 1 This is a schematic diagram of a projection device according to the first embodiment of this application. As shown, the projection device 1 of this embodiment includes an illumination system 10, a light modulation module 20, and a projection lens 30. The illumination system 10 emits light to form an illumination beam LM. The light modulation module 20 is disposed in the optical path of the illumination beam LM to receive the illumination beam LM and convert the illumination beam LM into an image beam LI. The projection lens 30 is disposed in the optical path of the image beam LI to project the image beam LI out of the projection device 1 to generate an image.

[0037] The light modulation module 20 includes an optical component 21, a prism component 22, and at least one light modulation component 23. The illumination beam LM passes sequentially through the optical component 21, the prism component 22, and the at least one light modulation component 23, where it is converted into an image beam LI and transmitted to the projection lens 30. The optical component 21 is a condenser lens; the illumination beam LM is focused by the optical component 21 and then incident on the prism component 22, and after being refracted by the prism component 22, it is incident on the light modulation component 23. The light modulation component 23 may include, for example, a digital micromirror device (DMD), a liquid crystal on silicon (LCoS) panel, or a liquid crystal display (LCD), but is not limited to these.

[0038] The projection lens 30 includes one or more optical lenses, which may have the same or different diopter values. The optical lenses of the projection lens 30 can move along the optical axis of the projection lens 30 to focus, so that the image light L1 generated by the light modulation component 23 is imaged onto the projection screen to form an image.

[0039] The lighting system 10 of this embodiment includes a light source module 11, an LED light source assembly 12, an optical path integration component 13, a lens array element 14, and an optical path bending component 15.

[0040] Please see Figure 1 , Figure 1A ,in Figure 1A This is a schematic diagram of the first laser component according to the first embodiment of this application. The light source module 11 in this embodiment is a laser module, including a first laser component 111, which may be, for example, an encapsulated module. The first laser component 111 emits a first laser beam LL1 along a first direction D1. The LED light source component 12 emits an output beam LO along a second direction D2. The second direction D2 is perpendicular to the first direction D1 and parallel to the optical axis of the projection lens 30.

[0041] The lens array element 14 includes a first array region 141 extending along the second direction D2 and a second array region 142 arranged along the second direction D2 and connected to the first array region 141. The first array region 141 is provided with a plurality of first microlenses, and the second array region 142 is provided with a plurality of second microlenses. A first laser beam LL1 passes through the first array region 141 of the lens array element 14 to form a first beam L1. An optical path integrator 13 is disposed on the optical path of the output beam L0 and the first beam L1. The first beam L1 and the laser beam L1 from the first array region LL1... The output beams L0 of the D light source assembly 12 are incident from two opposite sides of the optical path integration member 13; wherein the first beam L1 is guided by the optical path integration member 13 and transmitted to the second array region 142 of the lens array element 14, and forms the second beam L2 after passing through the second array region 142 of the lens array element 14; and the output beam LO is guided by the optical path integration member 13 and forms the output color beam LC, the output color beam LC penetrates the second array region 142 of the lens array element 14, and the illumination beam includes at least one of the output color beam LC and the second beam L2.

[0042] The light source module 11 described above may include only the first laser component. In another embodiment, the light source module 11 is configured as follows: the light source module 11 includes a first laser component 111 and a second laser component 112, wherein the first laser component 111 is as described above and will not be repeated. Figure 1B This is a schematic diagram of the second laser component according to the first embodiment of this application. The second laser component is, for example, a packaged module. The second laser component 112 emits a second laser beam LL2 along the first direction D1, and the second laser beam LL2 and the first laser beam LL1 have different wavelength ranges. In the second direction D2, the first laser component 111 is closer to the LED light source component 12 than the second laser component 112.

[0043] Continuing with the description of another configuration of the first embodiment, please refer to... Figure 1 , Figure 1A , Figure 1B , Figure 2 and Figure 3The lens array element 14 includes a first array region 141, a second array region 142, and a third array region 143 arranged along a second direction D2. The first array region 141 is located between the second array region 142 and the third array region 143, and the opposite ends of the first array region 141 are respectively connected to the second array region 142 and the third array region 143. The first array region 141 is provided with a plurality of first microlenses, the second array region 142 is provided with a plurality of second microlenses, and the third array region 143 is provided with a plurality of third microlenses.

[0044] The optical path bending assembly 15 includes a first reflector 151, a second reflector 152, and a third reflector 153. The first reflector 151 is a dichroic mirror, and the second and third reflectors 152 and 153 are mirrors. In this embodiment, the first reflector 151 reflects laser beams with longer wavelengths, such as red laser beams, but allows laser beams with shorter wavelengths, such as blue and green laser beams, to pass through. The second and third reflectors 152 and 153 can reflect beams of all wavelengths.

[0045] A first laser beam LL1, traveling along the first direction D1, passes through the diffuser 113 and then enters the first array region 141 of the lens array element 14. A second laser beam LL2, also traveling along the first direction D1, enters the third array region 143 of the lens array element 14. Multiple first microlenses in the first array region 141 disrupt the coherence of the first laser beam LL1, thus homogenizing it and forming the first beam L1. Similarly, multiple third microlenses in the third array region 143 disrupt the coherence of the second laser beam LL2, thus homogenizing it and forming the third beam L3.

[0046] The optical path bending component 15 is disposed on the transmission path of the first beam L1 and the third beam L3. The first beam L1 is incident on the first reflector 151 along the second direction D2, and after being reflected by the first reflector 151, it passes through the optical path integration component 13 along the first transmission direction. That is, the first transmission direction and the second direction D2 are orthogonal to each other, and the first transmission direction and the first direction D1 are parallel to each other and opposite to each other. The third beam L3 is incident on the third reflector 153 along the first direction D1, and after being reflected by the third reflector 153, the third beam L3 passes through the first reflector 151 along the second direction D2. In this embodiment, the first beam L1 is, for example, a red laser beam, and the third beam L3 is, for example, a blue laser beam and / or a green laser beam.

[0047] A first light beam L1 or a third light beam L3 is incident on a second reflector 152 along a second direction D2, and after being reflected by the second reflector 152, the first light beam L1 or the third light beam L3 is incident on an optical path integrator 13 along a first transmission direction. In this embodiment, the optical path integrator 13 is a dichroic mirror or a dichroic component. The first light beam L1 and / or the third light beam L3 pass through the optical path integrator 13 and are incident on the second array region 142 of the lens array element 14. The output light beam L0 emitted by the LED light source assembly 12 is incident on the optical path integrator 13 along the second transmission direction and is reflected by the optical path integrator 13 to form an output color beam LC traveling along the first transmission direction. The output color beam LC is incident on the second array region 142 of the lens array element 14. The second transmission direction is parallel to and opposite to the second direction D2. The optical characteristics of the optical path integrator 13 will be described in detail in later paragraphs.

[0048] The first beam L1 or the third beam L3 and the output color beam LC are homogenized again after passing through the second array region 142 of the lens array element 14 to form the aforementioned illumination beam LM. Thus, in this embodiment, the first laser beam LL1 emitted by the light source module 11 of the illumination system 10 forms the first beam L1 after passing through the first array region 141 of the lens array element 14. The first beam L1 then forms the homogenized illumination beam LM after passing through the second array region 142. Similarly, the second laser beam LL2 emitted by the light source module 11 forms the third beam L3 after passing through the third array region 143 of the lens array element 14. The third beam L3 also forms the homogenized illumination beam LM after passing through the second array region 142. The output color beam LC formed by the output beam L0 emitted by the LED light source assembly 12 after passing through the optical path integration member 13 is homogenized to form the illumination beam LM after passing through the second array region 142 of the lens array element 14.

[0049] Please refer to Figure 1 and Figure 1AIn this embodiment, the first laser component 111 includes a first light source 111a, a second light source 111b, a first laser reflector 111R, and a first light combiner 111c. The first light source 111a emits a first output light LLL1, and the second light source 111b emits a second output light LLL2. The first light source 111a includes a plurality of first light-emitting elements 111ad, each of which is, for example, a laser diode. The second light source 111b includes a plurality of second light-emitting elements 111bd, each of which is, for example, a laser diode. In this embodiment, the first output light LLL1 refers to a mixed beam of light emitted by at least a portion of the plurality of first light-emitting elements 111ad, and the second output light LLL2 refers to a mixed beam of light emitted by at least a portion of the plurality of second light-emitting elements 111bd. In this embodiment, the plurality of first light-emitting elements 111ad of the first light source 111a are arranged in an array, such as a 4×2 array, on a substrate. Similarly, the plurality of second light-emitting elements 111bd of the second light source 111b are arranged in another array, such as a 4×2 array, on another substrate. In this embodiment, the first output light LLL1 and the second output light LLL2 are laser beams with the same wavelength range, such as a red laser beam. However, this application is not limited to this; in other embodiments, the first output light LLL1 and the second output light LLL2 can also be laser beams with different wavelength ranges, such as a blue laser beam and a green laser beam, respectively. The first light-combining element 111c is a strip mirror, with a reflective coating formed on a portion of its surface and the other portion allowing the light beam to pass through. The first laser reflector 111R of the first laser assembly 111 is a reflective mirror.

[0050] exist Figure 1A In the light source module configuration, the first light source element 111a and the second light source element 111b are arranged along a first direction D1. For example, a plurality of first light-emitting elements 111ad of the first light source element 111a are formed on a substrate in two rows arranged along the first direction D1, and the first light-emitting elements 111ad in each row are arranged along a third direction D3. Similarly, a plurality of second light-emitting elements 111bd of the second light source element 111b are formed on a substrate in two rows arranged along the first direction D1, and the second light-emitting elements 111bd in each row are arranged along a third direction D3.

[0051] The first light source 111a emits a first output light LLL1 along the second transmission direction. The first output light LLL1 is reflected by the first laser reflector 111R and then enters the first light combiner 111c along the first direction D1 and passes through the first light combiner 111c. The second light source 111b emits a second output light LLL2 along the second transmission direction. The second output light LLL2 enters the first light combiner 111c and is reflected by the first light combiner 111c and travels along the first direction D1. In this way, the first output light LLL1 and the second output light LLL2 are guided by the first light combiner 111c to exit from the same optical path and become the first laser beam LL1 traveling along the first direction D1.

[0052] Please refer to Figure 1 and Figure 1B The second laser component 112 includes a third light source 112a, a fourth light source 112b, a second laser reflector 112R, and a second light combiner 112c. The third light source 112a emits a third output light LLL3, and the fourth light source 112b emits a fourth output light LLL4. The third light source 112a includes multiple third light-emitting elements 112ad, each of which is, for example, a laser diode. The fourth light source 112b includes multiple fourth light-emitting elements 112bd, each of which is, for example, a laser diode. In this embodiment, the third output light LLL3 refers to a mixed beam of light emitted by at least a portion of the multiple third light-emitting elements 112ad, and the fourth output light LLL4 refers to a mixed beam of light emitted by at least a portion of the multiple fourth light-emitting elements 112bd. In this embodiment, the multiple third light-emitting elements 112ad are arranged in an array on a substrate, for example, a 4×2 array, and the multiple fourth light-emitting elements 112bd are arranged in another array on a substrate, for example, a 4×2 array. In this embodiment, the third output light LLL3 and the fourth output light LLL4 are laser beams with different wavelength ranges. For example, the third output light LLL3 is a green laser beam, and the fourth output light LLL4 is a blue laser beam. However, this application is not limited to this; in other embodiments, the third output light LLL3 and the fourth output light LLL4 can also be laser beams with the same wavelength range, such as red laser beams. The second light combining element 112c is a dichroic mirror. The second laser reflector 112R of the second laser assembly 112 is a reflecting mirror.

[0053] exist Figure 1BIn the light source module configuration, the third light source element 112a and the fourth light source element 112b are arranged along a first direction D1. For example, multiple third light-emitting elements 112ad of the third light source element 112a are formed on a substrate in two rows arranged along the first direction D1, and the third light-emitting elements 112ad in each row are arranged along a third direction D3. Similarly, multiple fourth light-emitting elements 112bd of the fourth light source element 112b are formed on a substrate in two rows arranged along the first direction D1, and the fourth light-emitting elements 112bd in each row are arranged along a third direction D3.

[0054] The third light source 112a emits a third output light LLL3 along the second direction D2. The third output light LLL3 is reflected by the second laser reflector 112R and then enters the second light combiner 112c along the first direction D1 and passes through the second light combiner 112c. The fourth light source 112b emits a fourth output light LLL4 along the second direction D2. The fourth output light LLL4 enters the second light combiner 112c and is reflected by the second light combiner 112c and travels along the first direction D1. In this way, the third output light LLL3 and the fourth output light LLL4 are guided by the second light combiner 112c from the same optical path to become the second laser beam LL2 that travels along the first direction D1.

[0055] The first laser beam LL1 (e.g., a red laser beam) and the second laser beam LL2 (e.g., a blue laser beam and / or a green laser beam) in the first embodiment have different wavelength ranges.

[0056] As mentioned above, the first laser beam LL1 and the second laser beam LL2 form a homogenized first beam L1 and a third beam L3 after passing through the first array region 141 and the third array region 143 of the lens array element 14, respectively. Therefore, the first beam L1 has the same wavelength range as the first laser beam LL1, and the third beam L3 has the same wavelength range as the second laser beam LL2.

[0057] Figure 2 This is a perspective view of the projection device according to the second embodiment of this application. Figure 3 This is a side view of a projection device according to a second embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the first embodiment; therefore, identical components are given the same reference numerals and their descriptions are omitted. The difference between the projection device of this embodiment and the first embodiment lies in the configuration of the first laser component 111 and the second laser component 112 in the light source module 11_2 of this embodiment. Figure 2In the configuration of the light source module 11_2, the first light source element 111a and the second light source element 111b in the first laser assembly 111 are arranged along a first direction D1. For example, a plurality of first light-emitting elements 111ad of the first light source element 111a are formed on a substrate in two rows arranged along the first direction D1, and the first light-emitting elements 111ad in each row are arranged along a second direction D2. Similarly, a plurality of second light-emitting elements 111bd of the second light source element 111b are formed on a substrate in two rows arranged along the first direction D1, and the second light-emitting elements 111bd in each row are arranged along the second direction D2. The first light source 111a emits a first output light LLL1 along the third direction D3. The first output light LLL1 is reflected by the first laser reflector 111R and then enters the first light combiner 111c along the first direction D1 and passes through the first light combiner 111c. The second light source 111b emits a second output light LLL2 along the third direction D3. The second output light LLL2 enters the first light combiner 111c and is reflected by the first light combiner 111c and travels along the first direction D1. In this way, the first output light LLL1 and the second output light LLL2 are guided by the first light combiner 111c to exit from the same optical path and become the first laser beam LL1 traveling along the first direction D1.

[0058] The third light source element 112a and the fourth light source element 112b are arranged along a first direction D1. For example, a plurality of third light-emitting elements 112ad of the third light source element 112a are formed on a substrate in two rows arranged along the first direction D1, and the third light-emitting elements 112ad in each row are arranged along a second direction D2. Similarly, a plurality of fourth light-emitting elements 112bd of the fourth light source element 112b are formed on a substrate in two rows arranged along the first direction D1, and the fourth light-emitting elements 112bd in each row are arranged along the second direction D2. The third light source 112a emits a third output light LLL3 along the third direction D3. The third output light LLL3 is reflected by the second laser reflector 112R and then enters the second light combiner 112c along the first direction D1 and passes through the second light combiner 112c. The fourth light source 112b emits a fourth output light LLL4 along the third direction D3. The fourth output light LLL4 enters the second light combiner 112c and is reflected by the second light combiner 112c and travels along the first direction D1. In this way, the third output light LLL3 and the fourth output light LLL4 are guided by the second light combiner 112c from the same optical path to become the second laser beam LL2 that travels along the first direction D1.

[0059] Please see Figure 5 and Figure 6 ,in Figure 5 The spectra of the first beam L1 and the third beam L3 are represented. Figure 6The spectrum of the light beam reflected by the optical path integration component 13 is shown in the figure. In the first and second embodiments, the optical path integration component 13 can allow red laser beams, blue laser beams or green laser beams to pass through. The first beam L1 is a red laser beam and the third beam L3 is a blue laser beam or a green laser beam. Therefore, the first beam L1 and the third beam L3 can pass through the optical path integration component 13.

[0060] Please refer to the following: Figures 1 to 4 In the first and second embodiments, the LED light source assembly 12 includes an LED light source element 121 and a filter element 122. The LED light source element 121 emits an LED beam LLO, and the LED beam LLO passes at least partially through the filter element 122 to form an output beam L0. Please refer to [link to relevant documentation]. Figure 7 , Figure 8 and Figure 9 ,in Figure 7 This indicates the spectrum of the LED beam LLO. Figure 8 This represents the spectrum of the output beam L0 formed after the LED beam LLO passes through the filter 122, from... Figure 7 and Figure 8 It can be understood that blue light with a wavelength less than 480nm in the LED beam LLO is filtered out by the filter 122, that is, the LED beam LLO includes the wavelength range of the output beam L0, and the blue light with a wavelength less than 480nm in the LED beam LLO is reflected back to the LED light source 121 by the filter 122. Figure 9 This represents the spectrum of the output colored beam LC formed after the output beam L0 is reflected by the optical path integrator 13. The optical path integrator 13 absorbs the light that allows the first beam L1 (red light) and the third beam L3 (green light and / or blue light) to pass through. Therefore, a portion of the output beam L0 that overlaps with the first beam L1 (red light) and the third beam L3 is not reflected, resulting in the wavelength of the output colored beam LC being concentrated in the wavelength range of yellow light.

[0061] The illumination beam LM can be, in sequence, a beam homogenized from a red laser beam and a yellow laser beam, a beam homogenized from a green laser beam and a yellow laser beam, and a blue laser beam.

[0062] Please see Figure 4 This indicates the timing sequence of the first output light LLL1, the second output light LLL2, the third output light LLL3, the fourth output light LLL4 of the lighting system 10, and the LED beam LL0 of the LED light source 12. For example... Figure 4As shown, a light emission cycle P includes a first timing sequence P1, a second timing sequence P2, and a third timing sequence P3 in sequence. A first laser beam LL1, a third output light LLL3 (as a second laser beam LL2), and a fourth output light LLL4 (as a second laser beam LL2) are emitted sequentially in the first timing sequence P1, the second timing sequence P2, and the third timing sequence P3, respectively. In this embodiment, the first timing sequence P1, the second timing sequence P2, and the third timing sequence P3 do not overlap. Furthermore, after the third timing sequence P3 in the light emission cycle P of this embodiment ends, the first timing sequence P1 of the next light emission cycle P begins. The output beam L0 is emitted in the first timing sequence P1 and the second timing sequence P2, but not in the third timing sequence P3. In more detail, during the first timing P1 of the emission cycle P, the second laser component 112 is turned off, the first laser component 111 provides a first laser beam LL1 and forms a first beam L1 after passing through the first array region 141 of the lens array element 14, the LED light source 121 provides an output beam L0 and forms an output color beam LC after passing through the optical path integrator 13, the first beam L1 and the output color beam LC form the illumination beam LM (red light) of this timing after passing through the second array region 142 of the lens array element 14; during the second timing P2 of the emission cycle P, the first laser component 111... The fourth light source 112b of the second laser assembly 112 is turned off. The third light source 112a of the second laser assembly 112 provides a third output beam LLL3, and uses the third output beam LLL3 as the second laser beam LL2. After passing through the third array region 143 of the lens array element 14, the second beam L2 is formed. The LED light source 121 provides an output beam L0 and forms an output color beam LC after passing through the optical path integrator 13. The second beam L2 and the output color beam LC form the illumination beam LM (green light) of this sequence after passing through the second array region 142 of the lens array element 14. In the third time sequence P3 of the emission cycle P, the first laser component 111, the LED light source 121, and the third light source 112a of the second laser component 112 are turned off. The fourth light source 112b of the second laser component 112 provides a fourth output beam LLL4, and the fourth output beam LLL4 serves as the second laser beam LL2. After passing through the third array region 143 of the lens array element 14, the second beam L2 is formed. After passing through the second array region 142 of the lens array element 14, the second beam L2 forms the illumination beam LM (blue light) of this time sequence. In another embodiment, the emission cycle P also includes a fourth time sequence following the third time sequence P3. After the fourth time sequence in the emission cycle P ends, the first time sequence P1 of the next emission cycle P continues. The output beam L0 still emits light in the fourth time sequence. That is, in the fourth time sequence, the first output light LLL1, the second output light LLL2, the third output light LLL3, and the fourth output light LLL4 do not emit light, and the output beam L0 emits light alone.

[0063] Please see Figure 10This is a schematic diagram of a projection device according to the third embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the first embodiment; therefore, identical components are given the same reference numerals and their descriptions are omitted. The difference between this embodiment and the first embodiment is that the light source module 11_3 of the lighting system 10 in this embodiment does not have a first laser reflector and a second laser reflector. The first output light LLL1 of the first light source element 111a of the first laser component 111 of the light source module 11_3 is emitted directly along the first direction D1 and incident on the first light combiner 111c. Similarly, the third output light LLL3 of the third light source element 112a of the second laser component 112 is emitted directly along the first direction D1 and incident on the second light combiner 112c. Furthermore, Figure 10 The arrangement of the light sources illustrated is as follows: In the first laser assembly 111, a plurality of first light-emitting elements 111ad of the first light source 111a are arranged in two rows along a third direction D3 on the substrate, and the first light-emitting elements 111ad in each row are arranged along a second direction D2. In the second light source 111b, a plurality of second light-emitting elements 111bd are arranged in two rows along a third direction D3 on the substrate, and the second light-emitting elements 111bd in each row are arranged along a first direction D1. In the second laser assembly 112, a plurality of third light-emitting elements 112ad of the third light source 112a are arranged in two rows along a third direction D3 on the substrate, and the third light-emitting elements 112ad in each row are arranged along a second direction D2. In the fourth light source 112b, a plurality of fourth light-emitting elements 112bd are arranged in two rows along a third direction D3 on the substrate, and the fourth light-emitting elements 112bd in each row are arranged along a first direction D1.

[0064] Please see Figure 11This is a schematic diagram of a projection device according to the fourth embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the second embodiment; therefore, identical components are given the same reference numerals and their descriptions are omitted. The difference between the projection device of this embodiment and the second embodiment is that the light source module 11_4 of the lighting system 10A in this embodiment does not have a second laser component. The first laser component 111a, in addition to the first light source element 111a and the second light source element 111b, also includes a third light source element 111d and a fourth light source element 111e. The third light source element 111d emits a third output light LLL3, and the fourth light source element 111e emits a fourth output light LLL4. Furthermore, in this embodiment, the plurality of first light-emitting elements 111ad of the first light source element 111a and the plurality of third light-emitting elements 111dd of the third light source element 111d are arranged alternately on a substrate to form an array, for example, a 4×4 array. The plurality of second light-emitting elements 111bd of the second light source 111b and the plurality of fourth light-emitting elements 111ed of the fourth light source 111e are arranged alternately on a substrate to form an array, such as a 4×4 array. The first output light LLL1 of the first light source 111a and the third output light LLL3 of the third light source 111d are incident on the first light combiner 111c along the second direction D2 and then reflected by the first light combiner 111c. The second output light LLL2 of the second light source 111b and the fourth output light LLL4 of the fourth light source 111e are incident on the first light combiner 111c along the first direction D1 and pass through the first light combiner 111c. The first output light LLL1 and the second output light LLL2 form a first laser beam LL1 in the first light combiner 111c, and the third output light LLL3 and the fourth output light LLL4 form a second laser beam LL2 in the first light combiner 111c. In this embodiment, both the first laser beam LL1 and the second laser beam LL2 pass through the first array region 141 of the lens array element 14A. Therefore, this embodiment does not include a second beam combiner, and the lens array element 14A only has the first array region 141 and the second array region 142, which simplifies the structure of the illumination system 10A.

[0065] Please see Figure 12This is a schematic diagram of a projection device according to the fifth embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the third embodiment, so the same components are given the same reference numerals and their descriptions are omitted. The difference between the projection device of this embodiment and the third embodiment is that the first laser component 111 in the light source module 11_5 of this embodiment does not have a first light combining element. The plurality of first light-emitting elements 111ad of the first light source component 111a and the plurality of second light-emitting elements 111bd of the second light source component 111b are arranged alternately on a substrate to form an array, and each first light-emitting element 111ad is surrounded by four second light-emitting elements 111bd, and each second light-emitting element 111bd is also surrounded by four first light-emitting elements 111ad to form a densely arranged structure. The second laser assembly 112 does not have a second light combining element. The multiple first light-emitting elements 112ad of the third light source 112a and the multiple fourth light-emitting elements 112bd of the fourth light source 112b are arranged alternately on a substrate to form an array. Each third light-emitting element 112ad is surrounded by four fourth light-emitting elements 112bd, and each fourth light-emitting element 112bd is also surrounded by four third light-emitting elements 112ad, forming a densely arranged structure.

[0066] Please see Figure 13 This is a schematic diagram of a projection device according to the sixth embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the fourth embodiment, therefore the same parts are given the same reference numerals and their descriptions are omitted. The difference between the projection device in this embodiment and the fourth embodiment is that the light source module 11_6 of the lighting system 10A in this embodiment does not have a first light combining element. In the light source module 11_6, the multiple first light-emitting elements 111ad of the first light source component 111a, the multiple second light-emitting elements 111bd of the second light source component 111b, the multiple third light-emitting elements 111dd of the third light source component 111d, and the multiple fourth light-emitting elements 111ed of the fourth light source component 111e are arranged in pairs and are formed into an array on a substrate. Each first light-emitting element 111ad is surrounded by two third light-emitting elements 111dd and two fourth light-emitting elements 111ed, each second light-emitting element 111bd is surrounded by two third light-emitting elements 111dd and two fourth light-emitting elements 111ed, each third light-emitting element 111dd is surrounded by two first light-emitting elements 111ad and two second light-emitting elements 111bd, and each fourth light-emitting element 111ed is surrounded by two first light-emitting elements 111ad and two second light-emitting elements 111bd.

[0067] Please see Figure 14This is a schematic diagram of a projection device according to the seventh embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the first embodiment; therefore, identical components are given the same reference numerals and their descriptions are omitted. The difference between the projection device of this embodiment and the first embodiment is that the third array region 143 of the lens array element 14B of the illumination system 10B in this embodiment extends along the first direction D1 and is connected to the first array region 141. That is, the plurality of third microlenses of the third array region 143 form a lens array on the plane formed by the first direction D1 and the third direction D3. The first array region 141 and the second array region 142 are arranged along the second direction D2, meaning that the lens array element 14A of this embodiment presents an L-shape. The second laser component 112 of the light source module 11_7 is disposed corresponding to the third array region 143, and the second laser beam LL2 of the second laser component 112 is incident on the third array region 143 along the second direction D2 to generate a homogenized third beam L3. The third beam L3 is incident on the first reflector 151 along the second direction D2 and after being reflected by the fourth reflector 154. Furthermore, Figure 14 The arrangement of the light sources illustrated is as follows: In the first laser assembly 111, a plurality of first light-emitting elements 111ad of the first light source 111a are arranged in two rows along a third direction D3 on the substrate, and the first light-emitting elements 111ad in each row are arranged along a second direction D2. In the second light source 111b, a plurality of second light-emitting elements 111bd are arranged in two rows along a third direction D3 on the substrate, and the second light-emitting elements 111bd in each row are arranged along a first direction D1. In the second laser assembly 112, a plurality of third light-emitting elements 112ad of the third light source 112a are arranged in two rows along a third direction D3 on the substrate, and the third light-emitting elements 112ad in each row are arranged along a first direction D1. In the fourth light source 112b, a plurality of fourth light-emitting elements 112bd are arranged in two rows along a third direction D3 on the substrate, and the fourth light-emitting elements 112bd in each row are arranged along a second direction D2.

[0068] Please see Figure 15This is a schematic diagram of a projection device according to the eighth embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the seventh embodiment, therefore the same parts are given the same reference numerals and their descriptions are omitted. The difference between the projection device of this embodiment and the seventh embodiment is that in the lighting system 10C of this embodiment, the second array region 142 and the third array region 143 of the lens array element 14C both extend along the first direction D1 and are connected to the opposite sides of the first array region 141, that is, the lens array element 14B of this embodiment is U-shaped. That is, the plurality of second microlenses of the second array region 142 are formed on the plane formed by the first direction D1 and the third direction D3, the plurality of third microlenses of the third array region 143 are formed on the plane formed by the first direction D1 and the third direction D3, and the plurality of first microlenses of the first array region 141 are formed on the plane formed by the second direction D2 and the third direction D3. In addition, the optical path bending component 15 in this embodiment is only configured with the first reflector 151.

[0069] Please see Figure 16 This is a perspective view of the optical path integration component, lens array element, and optical path bending assembly of the illumination system of the projection device according to the ninth embodiment of this application. The projection device of this embodiment has some of the same structure as the projection device of the seventh embodiment, therefore, the same parts are given the same reference numerals and their descriptions are omitted. The difference between the projection device of this embodiment and the seventh embodiment is that the third array region 143 of the lens array element 14D in the illumination system 10D extends from the first array region 141 along the first direction D1, that is, the lens array element is an L-shaped structure, wherein the plurality of third microlenses in the third array region 143 are formed on the plane formed by the first direction D1 and the second direction D2. The second laser beam LL2 of the second laser component 112 is incident on the third array region 143 along a third direction D3 orthogonal to both the first direction D1 and the second direction D2, thereby shortening the size of the projection device in the first direction D1.

[0070] According to the above embodiments, the projection device and its illumination system of this application generate a uniform light effect by causing the laser beam emitted by the light source module to sequentially pass through the first and second array regions of the lens array element, and the output beam emitted by the LED light source to generate a uniform light effect by passing through the second array region. In this way, the laser beam, which is prone to producing light spots, can completely eliminate light spots by passing through the first and second array regions of the lens array element, eliminating the need for dynamic light-averaging components used in the prior art, such as diffuser wheels and actuators. This facilitates the miniaturization of the projection device and reduces operating noise.

[0071] Figure 17This diagram illustrates a projection device according to the tenth embodiment of this application. The projection device of this embodiment shares some structural similarities with the projection device of the first embodiment; therefore, identical components are given the same reference numerals and their descriptions are omitted. The difference between this embodiment and the first embodiment is that the lighting system 10E of this embodiment may also include an actuator Ac. Please refer to... Figure 17 The actuator Ac is positioned between the optical path integration component 13 and the optical path bending component 15 to diffuse and homogenize the first beam L1 and the third beam L3 from the optical path bending component 15. Adding the actuator Ac to the illumination system 10E further reduces laser speckle, thereby improving the image quality of the projection device.

[0072] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application. Furthermore, no embodiment or claim of this application needs to achieve all the purposes, advantages, or features disclosed in this application. In addition, the abstract and title of the invention are only used to assist in patent document retrieval and are not intended to limit the scope of this application. Furthermore, the terms "first," "second," etc., mentioned in this specification or claims are only used to name components or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of components.

Claims

1. A lighting system for providing a light beam, characterized in that, include: Light source module, LED light source assembly, optical path integration component, and lens array element; among which, The light source module is used to emit a first laser beam, which is incident on the lens array element along a first direction; The LED light source assembly is used to emit an output beam; The lens array element includes a first array region extending along a second direction and a second array region arranged along the first direction or the second direction and connected to the first array region. The first array region is provided with a plurality of first microlenses, and the second array region is provided with a plurality of second microlenses. The first direction and the second direction are perpendicular to each other. The first laser beam passes through the first array region of the lens array element to form a first beam; The optical path integration component is disposed on the optical path of the output beam and the first beam, and the first beam and the output beam from the LED light source assembly are respectively incident from two opposite sides of the optical path integration component; The first beam is guided by the optical path integration component and transmitted to the second array region of the lens array element, forming a second beam after passing through the second array region of the lens array element; and The output beam is guided by the optical path integration component to form an output colored beam, which penetrates the second array region of the lens array element. The illumination beam includes at least the output colored beam and at least one of the second beam.

2. The lighting system as described in claim 1, characterized in that, The wavelength range of the output color beam does not include the wavelength range of the first laser beam.

3. The lighting system as described in claim 1, characterized in that, The light source module includes a first laser component, which includes a first light source element, a second light source element, and a first light combiner element. The first light source element emits a first output light, and the second light source element emits a second output light. The first output light and the second output light are transmitted through different optical paths and guided by the first light combiner element to serve as the first laser beam. The first output light and the second output light have the same or different wavelength ranges.

4. The lighting system as described in claim 1, characterized in that, It also includes an optical path bending component, which is disposed on the transmission path of the first light beam, wherein the first light beam is transmitted to the optical path bending component along a first direction, and the first light beam leaves the optical path bending component in a first transmission direction, wherein the first transmission direction is parallel to and opposite to the first direction.

5. The lighting system as described in claim 4, characterized in that, The light source module further includes a second laser component for emitting a second laser beam. The second laser beam is incident on the lens array element along the first direction. The lens array element further includes a third array region. The third array region is arranged along the first direction or the second direction and connected to the first array region. The third array region is provided with a plurality of third microlenses. The second laser beam passes through the third array region to form a third beam.

6. The lighting system as described in claim 5, characterized in that, The optical path bending assembly further includes a first reflector and a second reflector. The optical path bending assembly is disposed on the transmission path of the third beam, wherein the third beam is transmitted to the optical path bending assembly along the first direction, and the first beam and the third beam leave the optical path bending assembly in the first transmission direction. The first reflector is used to allow the third beam to pass through and reflect the first beam, and the second reflector is used to reflect the first beam and the third beam from the first reflector, so that the first beam and the second beam are transmitted to the optical path assembly along the first transmission direction.

7. The lighting system as claimed in claim 6, characterized in that, The optical path bending assembly further includes a third reflector disposed on the transmission path of the third beam, wherein the third beam is transmitted to the third reflector along the first direction and guided by the third reflector to be transmitted to the first reflector in the second direction.

8. The lighting system as claimed in claim 5, characterized in that, The second laser component includes a third light source, a fourth light source, and a second light combiner. The third light source emits a third output light, and the fourth light source emits a fourth output light. The third output light and the fourth output light are transmitted through different optical paths and guided by the second light combiner to form the second laser beam. The third output light and the fourth output light have the same or different wavelength ranges.

9. The lighting system as claimed in claim 8, characterized in that, The wavelength range of the first laser beam is different from that of the second laser beam.

10. The lighting system as claimed in claim 3, characterized in that, The first light source of the first laser assembly includes a plurality of first light-emitting elements that emit the first output light and are arranged in an array, and the second light source of the first laser assembly includes a plurality of second light-emitting elements that emit the second output light and are arranged in another array.

11. The lighting system as claimed in claim 8, characterized in that, The third light source of the second laser assembly includes a plurality of third light-emitting elements that emit the third output light and are arranged in an array, and the fourth light source of the second laser assembly includes a plurality of fourth light-emitting elements that emit the fourth output light and are arranged in another array.

12. The lighting system as claimed in claim 3, characterized in that, The first laser component further includes a third light source and a fourth light source. The third light source emits a third output light, and the fourth light source emits a fourth output light. The third output light and the fourth output light are transmitted through different optical paths and guided by the first light combiner to form the first laser beam. The first output light and the second output light have the same wavelength range, while the first output light, the third output light, and the fourth output light have different wavelength ranges.

13. The lighting system as claimed in claim 12, characterized in that, The first light source includes a plurality of first light-emitting elements that emit the first output light, the third light source includes a plurality of third light-emitting elements that emit the third output light, the second light source includes a plurality of second light-emitting elements that emit the second output light, and the fourth light source includes a plurality of fourth light-emitting elements that emit the fourth output light. The plurality of first light-emitting elements and the plurality of third light-emitting elements are arranged alternately with each other, and the plurality of second light-emitting elements and the plurality of fourth light-emitting elements are arranged alternately with each other.

14. The lighting system as claimed in claim 1, characterized in that, The light source module includes a first laser component, which includes a first light source element and a second light source element. The first light source element includes a plurality of first light-emitting elements that emit a first output light, and the second light source element includes a plurality of second light-emitting elements that emit a second output light. The first output light or the second output light directly forms the first laser beam, and the plurality of first light-emitting elements and the plurality of second light-emitting elements are arranged alternately to form an array.

15. The lighting system as claimed in claim 2, characterized in that, The LED light source assembly includes an LED light source element and a filter element. The LED light source element emits an LED beam, and the LED beam passes at least partially through the filter element to form the output beam.

16. The lighting system as claimed in claim 15, characterized in that, The wavelength range of the LED beam includes the wavelength range of the output beam, the wavelength range of the output beam includes the wavelength range of the output color beam, and the beam with the blue light wavelength range in the LED beam is reflected by the filter.

17. The lighting system as claimed in claim 8, characterized in that, A light emission cycle includes a first timing sequence, a second timing sequence, and a third timing sequence in sequence. During the light emission cycle, the third output light of the first laser beam, the third output light of the second laser beam, and the fourth output light of the second laser beam are emitted in sequence in the first timing sequence, the second timing sequence, and the third timing sequence, respectively. The first timing sequence, the second timing sequence, and the third timing sequence do not overlap. The output beams are emitted in the first timing sequence and the second timing sequence, but not in the third timing sequence.

18. The lighting system as claimed in claim 17, characterized in that, The emission cycle also includes a fourth time sequence following the third time sequence, during which the output beam is emitted in the fourth time sequence.

19. A projection device, characterized in that, include: The lighting system as described in any one of claims 1 to 18, wherein at least one of the output colored beam and the second beam is emitted from the lighting system to become the lighting beam; An optical modulation module is disposed in the optical path of the illumination beam to receive the illumination beam and convert the illumination beam into an image beam; A projection lens is disposed in the optical path of the image beam to project the image beam out of the projection device to generate an image.

20. The projection device as described in claim 19, characterized in that, The light modulation module includes a prism assembly and at least one light modulation component, wherein the illumination beam is sequentially transmitted through the prism assembly and the at least one light modulation component, and then converted into the image beam by the at least one light modulation component.

21. The lighting system as claimed in claim 19, characterized in that, The second direction is parallel to the optical axis of the projection lens.

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