Illumination system and projection device

Abstract

The invention discloses a lighting system and a projection device. The lighting system comprises a first light source module, a second light source module and a first light splitting element. The first light source module is used for providing a first light beam transmitted along a first direction. The second light source module is used for providing a second light beam transmitted along a second direction. The first light splitting element is arranged between the first light source module and the second light source module, the first light splitting element is used for reflecting a first light beam to enable the first light beam to be transmitted to the optical element along a second direction, and the first light splitting element is used for enabling a second light beam to pass through and be transmitted to the optical element along the second direction; light spots formed by the first light beam and the second light beam on the optical element are at least partially overlapped and form a first light spot group and a second light spot group, and the first light spot group and the second light spot group are arranged in the first direction. The illumination system and the projection device can effectively improve the brightness of the illumination light beam.

Description

Technical Field

[0001] This invention relates to an optical system and an electronic device, and more particularly to an illumination system and a projection device. Background Technology

[0002] A projection device (such as a projector) is a display device used to generate images. The imaging principle of a projection device is to convert the illumination beam generated by the lighting system into an image beam using a light valve, and then project the image beam onto a projection surface such as a screen or wall using a projection lens. As projection devices are widely used in various environments, they are correspondingly designed to have a smaller size. To increase the brightness of the illumination beam, multiple light sources are typically combined. However, the large spot size formed by multiple light sources on the optical elements leads to a corresponding increase in the size of the projection device.

[0003] 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 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 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

[0004] The present invention provides an illumination system and a projection device in which at least two light spots overlap at least partially on an optical element, which can effectively improve the brightness of the illumination beam without increasing the size of the projection device.

[0005] Other objects and advantages of the present invention can be further understood from the technical features disclosed herein.

[0006] To achieve one or more of the above-mentioned objectives, or other objectives, one embodiment of the present invention provides a lighting system comprising a first light source module, a second light source module, and a first beam splitter. The first light source module provides a first light beam propagating along a first direction, the first light beam including at least one of a first sub-beam, a second sub-beam, and a third sub-beam. The second light source module provides a second light beam propagating along a second direction, the second light beam including at least one of the first sub-beam, the second sub-beam, and the third sub-beam, wherein the first direction is different from the second direction. The first beam splitter is disposed between the first light source module and the second light source module. The first beam splitter is used to reflect the first light beam, so that the first light beam is transmitted to the optical element along the second direction. The first beam splitter is also used to allow the second light beam to pass through and be transmitted to the optical element along the second direction. The light spots formed by the first sub-beams of the first light beam on the optical element overlap at least partially with the light spots formed by the second sub-beams and the third sub-beams of the second light beam on the optical element, forming a first light spot group. The light spots formed by the first sub-beams of the second light beam on the optical element overlap at least partially with the light spots formed by the second sub-beams and the third sub-beams of the first light beam on the optical element, forming a second light spot group. The first light spot group and the second light spot group are arranged along the first direction.

[0007] To achieve one, some, or all of the above-mentioned objectives, or other objectives, one embodiment of the present invention provides a projection device comprising an illumination system, a light valve module, and a projection lens as described above. The illumination system provides an illumination beam, the illumination beam comprising at least one of a first beam from the optical element and a second beam. The light valve module is located in the transmission path of the illumination beam and is used to convert the illumination beam into an image beam. The projection lens is located in the transmission path of the image beam and is used to project the image beam out of the projection device.

[0008] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. The lighting system and projection device of the embodiments of the present invention allow at least two light spots to at least partially overlap on the optical element, which can effectively improve the brightness of the lighting beam without increasing the size of the projection device. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a projection device according to an embodiment of the present invention.

[0010] Figure 2 This is a schematic diagram of a first embodiment of the lighting system of the present invention.

[0011] Figure 3 This is a schematic diagram of a configuration embodiment of the beam splitter of the present invention.

[0012] Figure 4 This is a schematic diagram of a light source module according to an embodiment of the present invention.

[0013] Figure 5 This is a schematic diagram of a first embodiment of the beam-splitting element of the present invention.

[0014] Figure 6 This is a schematic diagram of the wavelength of the first spectral region of the present invention.

[0015] Figure 7 This is a schematic diagram of the wavelength of the second spectral region of the present invention.

[0016] Figure 8 This is a schematic diagram of a first embodiment of the light spot of the present invention.

[0017] Figure 9 This is a schematic diagram of a second embodiment of the lighting system of the present invention.

[0018] Figure 10 This is another schematic diagram of a second embodiment of the lighting system of the present invention.

[0019] Figure 11 This is a schematic diagram of a second embodiment of the configuration of the beam splitter of the present invention.

[0020] Figure 12 This is a schematic diagram of a second embodiment of the beam-splitting element of the present invention.

[0021] Figure 13 This is a schematic diagram of the second embodiment of the light spot of the present invention.

[0022] Figure 14 This is a schematic diagram of an embodiment of the optical component of the present invention.

[0023] Figure 15 This is a schematic diagram of a third embodiment of the lighting system of the present invention.

[0024] Figure 16 This is another schematic diagram of a third embodiment of the lighting system of the present invention.

[0025] Figure 17 This is a schematic diagram of a second embodiment of the optical component of the present invention.

[0026] Figure 18 This is a schematic diagram of the third embodiment of the light spot of the present invention.

[0027] Figure 19 This is a schematic diagram of a fourth embodiment of the lighting system of the present invention.

[0028] Figure 20 This is a partial schematic diagram of a fourth embodiment of the lighting system of the present invention.

[0029] Figure 21 This is a schematic diagram of an embodiment three of the optical components of the present invention.

[0030] Figure 22 This is a schematic diagram of the fourth embodiment of the light spot of the present invention.

[0031] Figure 23 This is a schematic diagram of a fifth embodiment of the lighting system of the present invention.

[0032] Figure 24 This is a schematic diagram of the fifth embodiment of the light spot of the present invention.

[0033] Figure 25 This is a schematic diagram of an embodiment three of the optical components of the present invention.

[0034] Figure 26 This is a schematic diagram of a sixth embodiment of the lighting system of the present invention.

[0035] Figure 27 This is a schematic diagram of the light spot in Embodiment Six of the present invention.

[0036] Figure 28 This is a schematic diagram of a seventh embodiment of the lighting system of the present invention.

[0037] Figure 29 This is a schematic diagram of a third embodiment of the configuration of the beam-splitting element of the present invention.

[0038] Figure 30 This is a schematic diagram of a third embodiment of the beam-splitting element of the present invention.

[0039] Figure 31 This is a schematic diagram of the seventh embodiment of the light spot of the present invention.

[0040] Figure 32 This is a schematic diagram of an eighth embodiment of the lighting system of the present invention.

[0041] Figure 33 This is a schematic diagram of the eighth embodiment of the light spot of the present invention.

[0042] Figure 34 This is a schematic diagram of an embodiment four of the optical components of the present invention.

[0043] Figure 35 This is a schematic diagram of embodiment nine of the lighting system of the present invention.

[0044] Figure 36 This is a schematic diagram of the configuration embodiment four of the beam splitter of the present invention.

[0045] Figure 37 This is a schematic diagram of a fourth embodiment of the beam-splitting element of the present invention.

[0046] Figure 38This is a schematic diagram of the ninth embodiment of the light spot of the present invention.

[0047] Figure 39 This is a schematic diagram of embodiment five of the optical components of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1: Projection device

[0050] 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i: Lighting systems

[0051] 101, 111: First light source module

[0052] 1011, 1021, 1111, 1121, 1141, 1151, 1211, 1311, 1321, 1341, 1351: First sub-beam

[0053] 1012, 1022, 1112, 1122, 1142, 1152, 1212, 1312, 1322, 1342, 1352: Second sub-beam

[0054] 1013, 1023, 1113, 1123, 1143, 1153, 1213, 1313, 1323, 1343, 1353: Third sub-beam

[0055] 102, 112: Second light source module

[0056] 103, 113: First beam splitter

[0057] 1031, 1161, 1331, 1361: First spectral region

[0058] 1032, 1162, 1332, 1362: Second spectral region

[0059] 114: Third Light Source Module

[0060] 115: Fourth Light Source Module

[0061] 116: Second beam splitter

[0062] 117: First optical component

[0063] 1171, 1171a, 1171b, 1174, 1182, 1182a, 1182b, 1192, 1202: Penetration Zone

[0064] 1172, 1172a, 1172b, 1181, 1181a, 1181b1201: Reflection Zone

[0065] 1173, 1191: Semi-reflection zone

[0066] 118: Second optical component

[0067] 119: Third optical component

[0068] 120: Fourth optical component

[0069] 121, 131: Fifth light source module

[0070] 132: Sixth Light Source Module

[0071] 133: Third beam splitter

[0072] 134: Seventh Light Source Module

[0073] 135: Eighth Light Source Module

[0074] 136: Fourth beam splitter

[0075] 190: Optical Components

[0076] 200: Light valve module

[0077] 300: Projection lens

[0078] D1: First extension direction

[0079] D2: Second extension direction

[0080] D3: Third extension direction

[0081] D4: Fourth Extension Direction

[0082] D5: Fifth Extension Direction

[0083] D6: Sixth Extension Direction

[0084] D7: Seventh Extension Direction

[0085] D8: Eighth Extension Direction

[0086] D9: Ninth Extension Direction

[0087] D10: Tenth Extension Direction

[0088] D11: Eleventh Extension Direction

[0089] D12: Twelfth Extension Direction

[0090] D13: Thirteenth Extension Direction

[0091] D14: Fourteenth Extension Direction

[0092] D15: Fifteenth Extension Direction

[0093] D16: Sixteenth Extension Direction

[0094] D17: Seventeenth Extension Direction

[0095] D18: Eighteenth Extension Direction

[0096] L1: illumination beam

[0097] L11, L11': First beam

[0098] L12, L12': Second beam

[0099] L13, L13': Third beam

[0100] L14, L14': Fourth beam

[0101] L15, L15': Fifth beam

[0102] L16: Sixth Beam

[0103] L17: The Seventh Beam

[0104] L18: The Eighth Beam

[0105] L2: Image Beam

[0106] R: First light-emitting unit

[0107] G: Second light-emitting unit

[0108] B: Third light-emitting unit

[0109] P1: First light spot group

[0110] P2: Second light spot group

[0111] P3: Third light spot group

[0112] P4: Fourth spot group

[0113] P5: Fifth light spot group

[0114] P6: Sixth light spot group

[0115] P7: Seventh light spot group

[0116] P8: Eighth light spot group

[0117] P1': First sub-spot group

[0118] P2': Second sub-spot group

[0119] P3': Third sub-spot group

[0120] P4': Fourth sub-spot group

[0121] X: Second direction

[0122] Y: First direction

[0123] Z: Third-party direction

[0124] -Z: Fourth direction

[0125] θ1, θ2, θ3, θ4, θ5, θ6, θ7, θ8: included angle Detailed Implementation

[0126] 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 mentioned 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.

[0127] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a projection device according to an embodiment of the present invention. The projection device 1 includes an illumination system 100, a light valve module 200, and a projection lens 300. The illumination system 100 is used to provide an illumination beam L1 to the light valve module 200. The illumination system 100 may also include at least one of the following optical elements: a long conversion element (such as a phosphor wheel), a light homogenizing element (such as an integrating column), a light filtering element (such as a light filtering wheel), and multiple light splitting and combining elements.

[0128] The light valve module 200 is configured in the transmission path of the illumination beam L1 to convert the illumination beam L1 into an image beam L2 and to transmit the image beam L2 to the projection lens 300. The light valve module 200 can be a reflective light modulator such as a digital micromirror device (DMD) or a liquid crystal on silicon panel (LCoS panel), a transparent liquid crystal panel, or a transmissive light modulator such as an electro-optic modulator, a magneto-optic modulator, or an acousto-optic modulator (AOM).

[0129] The projection lens 300 is positioned along the transmission path of the image beam L2 from the light valve module 200 to project the image beam L2 from the projection device 1 to a projection target. The projection target is, for example, a screen or a wall. The projection lens 300 includes, for example, a combination of one or more optical lenses with refractive power, such as various combinations of non-planar lenses including biconcave lenses, biconvex lenses, concave-convex lenses, convex-concave lenses, plano-convex lenses, and plano-concave lenses. In other embodiments, the projection lens 300 may also include planar optical lenses to project the image beam L2 onto the projection target by reflection. This invention does not limit the type or form of the projection lens 300.

[0130] Please refer to Figures 2 to 8 , Figure 2 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the configuration of a beam splitter element according to an embodiment of the present invention. Figure 4 This is a schematic diagram of a light source module according to an embodiment of the present invention. Figure 5 This is a schematic diagram of a beam splitter element according to an embodiment of the present invention. Figures 6 to 7 This is a schematic diagram of the wavelength of the beam splitting region according to an embodiment of the present invention. Figure 8 This is a schematic diagram of a light spot according to an embodiment of the present invention. A first direction Y, a second direction X, and a third direction Z are shown in the diagram to clearly indicate the viewing angle of each direction. The first direction Y and the second direction X are perpendicular to each other in the diagram. The third direction Z is perpendicular to both the first direction Y and the second direction X. In this embodiment, the lighting system 100a includes a first light source module 101, a second light source module 102, and a first beam splitter 103. The lighting system 100a also includes an optical element 190. The optical element 190 is, for example, a lens, and the lens may be, for example, a condenser lens.

[0131] The first light source module 101 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B, such as Figure 4As shown. The second light-emitting unit G and the third light-emitting unit B are arranged side by side. The positions of the second light-emitting unit G and the third light-emitting unit B can be interchanged as needed. The first light-emitting unit R is located on the same side of the second light-emitting unit G and the third light-emitting unit B. The number of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B can be multiple. For example, the number of the first light-emitting units R is eight, and every two first light-emitting units R form a group, with each group of two first light-emitting units R corresponding to a collimating lens. For example, the number of the second light-emitting units G is three, with each second light-emitting unit G corresponding to a collimating lens. For example, the number of the third light-emitting units B is two, with each third light-emitting unit B corresponding to a collimating lens. Each light-emitting unit is, for example, a light-emitting diode or a laser diode, or may be other types of light sources. The first light source module 101 can be a light-emitting diode array or a laser diode array. The first light source module 101 is used to provide a first light beam L11 transmitted along the first direction Y, the first light beam L11 including at least one of a first sub-beam 1011, a second sub-beam 1012, and a third sub-beam 1013. In this embodiment, the first light-emitting unit R provides a first sub-beam 1011, the second light-emitting unit G provides a second sub-beam 1012, and the third light-emitting unit B provides a third sub-beam 1013. In this embodiment, the first light-emitting unit R is a red light-emitting unit, the first sub-beam 1011 is a red light beam, the second light-emitting unit G is a green light-emitting unit, the second sub-beam 1012 is a green light beam, the third light-emitting unit B is a blue light-emitting unit, and the third sub-beam 1013 is a blue light beam.

[0132] The second light source module 102 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B. The second light source module 102 can be composed of... Figure 4 Implementation of the embodiment. The second light source module 102 is used to provide a second light beam L12 transmitted along the second direction X. The second light beam L12 includes at least one of a first sub-beam 1021, a second sub-beam 1022, and a third sub-beam 1023. In this embodiment, the first light-emitting unit R is used to provide the first sub-beam 1021, the second light-emitting unit G is used to provide the second sub-beam 1022, and the third light-emitting unit B is used to provide the third sub-beam 1023.

[0133] In this embodiment, the extension direction of the first light source module 101 is parallel to the second direction X and the third direction Z, and the extension direction of the second light source module 102 is parallel to the first direction Y and the third direction Z. On a reference plane perpendicular to the third direction Z, the first light source module 101 and the second light source module 102 are arranged in an L-shape.

[0134] A first beam splitter 103 is disposed between a first light source module 101 and a second light source module 102. The extension direction of the first beam splitter 103 is parallel to a first extension direction D1 and a second extension direction D2. The first extension direction D1 is, for example, a direction that forms a 45-degree angle with both the first direction Y and the second direction X. The second extension direction D2 is, for example, parallel to the third direction Z. The extension plane of the first beam splitter 103 forms an angle θ1 with the extension plane of the first light source module 101, and the extension plane of the first beam splitter 103 forms an angle θ2 with the extension plane of the second light source module 102. The angles θ1 and θ2 are, for example, 45-degree angles. The first beam splitter 103 is used to reflect a first light beam L11 from the first light source module 101, allowing the first light beam L11 to be transmitted along the second direction X to the optical element 190, and the first beam splitter 103 is used to allow a second light beam L12 from the second light source module 102 to pass through and be transmitted along the second direction X to the optical element 190. Therefore, the first beam L11 and / or the second beam L12 can serve as the illumination beam L1 and be transmitted to the light valve module 200 through the optical element 190. The first beam splitting element 103 includes a first beam splitting region 1031 and a second beam splitting region 1032. The first beam splitting region 1031 and the second beam splitting region 1032 are arranged along a first extending direction D1. The first beam splitting region 1031 is used to reflect the second sub-beam 1012 and the third sub-beam 1013 of the first beam L11, allowing the second sub-beam 1012 and the third sub-beam 1013 of the first beam L11 to be transmitted to the optical element 190 along the second direction X, and allowing the first sub-beam 1021 of the second beam L12 to pass through. The second beam splitting region 1032 is used to reflect the first sub-beam 1011 of the first beam L11, allowing the first sub-beam 1011 of the first beam L11 to be transmitted to the optical element 190 along the second direction X, and allowing the second sub-beam 1022 and the third sub-beam 1023 of the second beam L12 to pass through. The first beam-splitting region 1031 is, for example, used to reflect wavelengths below 580 nanometers (nm) and to allow wavelengths above 580 nanometers to pass through (e.g. Figure 6 (As shown). The second beam-splitting region 1032 is, for example, used to allow wavelengths below 580 nanometers (nm) to pass through and to reflect wavelengths above 580 nanometers (e.g. Figure 7 (As shown). The first beam-splitting region 1031 is, for example, used to allow red light beams to pass through and to reflect blue and green light beams. The second beam-splitting region 1032 is, for example, used to reflect red light beams and to allow blue and green light beams to pass through. The first beam-splitting element 103 is, for example, a beam splitter (e.g., a dichroic mirror). In one embodiment, the first beam-splitting region 1031 and the second beam-splitting region 1032 may be two different beam splitters. In another embodiment, the first beam-splitting region 1031 and the second beam-splitting region 1032 may be implemented by different coating areas of the same beam splitter.

[0135] The first beam L11 and the second beam L12 form at least partially overlapping light spots on the optical element 190. For example... Figure 8 As shown, when the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B in the first light source module 101 and the second light source module 102 are all in the on state, the light spot formed by the first sub-beam 1011 of the first beam L11 on the optical element 190 at least partially overlaps with the light spots formed by the second sub-beam 1022 and the third sub-beam 1023 of the second beam L12 on the optical element 190, forming a first light spot group P1. The light spot formed by the first sub-beam 1021 of the second beam L12 on the optical element 190 at least partially overlaps with the light spots formed by the second sub-beam 1012 and the third sub-beam 1013 of the first beam L11 on the optical element 190, forming a second light spot group P2. The first light spot group P1 and the second light spot group P2 are arranged along the first direction Y.

[0136] Through the above, the illumination system of one embodiment of the present invention allows the light spots formed by multiple light beams on the optical element 190 to overlap at least partially, which not only effectively improves the brightness of the illumination beam L1, but also avoids increasing the overall size of the multiple light spots, thus achieving the effect of not increasing the volume of the projection device 1.

[0137] Please refer to Figures 9 to 14 , Figures 9 to 10 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 11 This is a schematic diagram of the configuration of a beam splitter element according to an embodiment of the present invention. Figure 12 This is a schematic diagram of a beam splitter element according to an embodiment of the present invention. Figure 13 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 14 This is a schematic diagram of an optical component according to an embodiment of the present invention. The illumination system 100b includes a first light source module 111, a second light source module 112, a first beam splitter 113, a third light source module 114, a fourth light source module 115, a second beam splitter 116, and a first optical component 117. The illumination system 100b also includes an optical component 190. The components, operation, and principles of the first light source module 111, the second light source module 112, and the first beam splitter 113 are the same as those of the first light source module 101, the second light source module 102, and the first beam splitter 103 described above, and therefore will not be repeated here.

[0138] The first light source module 111 includes a first light beam L11 transmitted along a first direction Y, and the first light beam L11 includes at least one of a first sub-beam 1111, a second sub-beam 1112, and a third sub-beam 1113. The second light source module 112 includes a second light beam L12 transmitted along a second direction X, and the second light beam L12 includes at least one of a first sub-beam 1121, a second sub-beam 1122, and a third sub-beam 1123.

[0139] The third light source module 114 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B. The third light source module 114 is used to provide a third light beam L13 transmitted along the first direction Y. The third light beam L13 includes at least one of a first sub-beam 1141, a second sub-beam 1142, and a third sub-beam 1143.

[0140] The fourth light source module 115 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B. The fourth light source module 115 is used to provide a fourth light beam L14 transmitted along a third direction Z. The fourth light beam L14 includes at least one of a first sub-beam 1151, a second sub-beam 1152, and a third sub-beam 1153.

[0141] The second beam splitter 116 is disposed between the third light source module 114 and the fourth light source module 115. The second beam splitter 116 reflects the third beam L13, allowing it to travel along the third direction Z to the first optical element 117. The second beam splitter 116 also allows the fourth beam L14 to pass through and travel along the third direction Z to the first optical element 117. The second beam splitter 116 and the first beam splitter 113 can be the same element. The second beam splitter 116 is disposed parallel to the third extension direction D3 and the fourth extension direction D4. The third extension direction D3 is, for example, a direction forming a 45-degree angle with both the first direction Y and the third direction Z. The fourth extension direction D4 is, for example, a direction parallel to the second direction X. The extension plane of the second beam splitter 116 forms an angle θ3 with the extension plane of the third light source module 114, and the extension plane of the second beam splitter 116 forms an angle θ4 with the extension plane of the fourth light source module 115. Angles θ3 and θ4 are, for example, 45-degree angles. The second beam splitter 116 includes a first beam splitting region 1161 and a second beam splitting region 1162. The first beam splitting region 1161 and the second beam splitting region 1162 are arranged along a third extending direction D3. The first beam splitting region 1161 is used to reflect the first sub-beam 1141 of the third beam L13, allowing the first sub-beam 1141 of the third beam L13 to be transmitted along the third direction Z to the first optical element 117, and allowing the second sub-beam 1152 and the third sub-beam 1153 of the fourth beam L12 to pass through. The second beam splitting region 1162 is used to reflect the second sub-beam 1142 and the third sub-beam 1143 of the third beam L13, allowing the second sub-beam 1142 and the third sub-beam 1143 of the third beam L13 to be transmitted along the third direction Z to the first optical element 117, and allowing the first sub-beam 1151 of the fourth beam L12 to pass through.

[0142] In this embodiment, the extension direction of the third light source module 114 is parallel to the second direction X and the third direction Z, and the extension direction of the fourth light source module 115 is parallel to the first direction Y and the second direction X. On a reference plane perpendicular to the second direction X, the third light source module 114 and the fourth light source module 115 are arranged in an L-shape. The third light source module 114 and the fourth light source module 115 are symmetrically arranged with the first light source module 111 and the second light source module 112 along the third extension direction D3 of the first region optical element 117.

[0143] A first optical element 117 is disposed between multiple light source modules (111, 112, 114, and 115) and optical element 190. The first optical element 117 is disposed parallel to a fifth extending direction D5 and a sixth extending direction D6. The fifth extending direction D5 is, for example, parallel to a first direction Y. The sixth extending direction D6 is, for example, oblique to a second direction X and a third direction Z, respectively. The first optical element 117 is used to allow at least portions of the first beam L11 and the second beam L12 from the first light source module 111 and the second light source module 112 to pass through, and to reflect at least portions of the third beam L13 and the fourth beam L14 from the third light source module 114 and the fourth light source module 115, so that the first beam L11, the second beam L12, the third beam L13, and the fourth beam L14 are all transmitted along the second direction X to the optical element 190. In this embodiment, the first optical element 117 is used to allow the first beam L11 and the second beam L12 to pass through, and to reflect the third beam L13 and the fourth beam L14, so that the first beam L11, the second beam L12, the third beam L13, and the fourth beam L14 are all transmitted to the optical element 190 along the second direction X. The first optical element 117 is, for example, a partitioned optical element. The partitioned optical element includes a plurality of transmission zones 1171 (1171a, 1171b) and a plurality of reflection zones 1172 (1172a, 1172b), and the plurality of transmission zones 1171 and the plurality of reflection zones 1172 are arranged alternately along the fifth extension direction D5. The transmission zone 1171a is used to allow the first sub-beam 1111 of the first beam L1, the second sub-beam 1122 of the second beam L2, and the third sub-beam 1123 to pass through. The transmission zone 1171b allows the second sub-beam 1112 and the third sub-beam 1113 of the first beam L1 and the first sub-beam 1121 of the second beam L2 to pass through. The reflection zone 1172a reflects the first sub-beam 1141 of the third beam L3 and the second sub-beam 1152 and the third sub-beam 1153 of the fourth beam L4. The reflection zone 1172b reflects the second sub-beam 1142 and the third sub-beam 1143 of the third beam L3 and the first sub-beam 1151 of the fourth beam L4. The transmission zone 1171 of the partitioned optical component can be, for example, a light-transmitting component made of a material such as vinyl glass or plastic, or it can be air. The reflection zone 1172 of the partitioned optical component can be, for example, a mirror plate with a reflective coating, or it can be a reflector.

[0144] Therefore, the first beam L11, the second beam L12, the third beam L13, and / or the fourth beam L14 can serve as the illumination beam L1 and be transmitted to the light valve module 200 through the optical element 190. The first beam L11 and the second beam L12, the third beam L13, and the fourth beam L14 form at least partially overlapping light spots on the optical element 190. Figure 13As shown, when the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B in the first light source module 111, the second light source module 112, the third light source module 114, and the fourth light source module 115 are all in the on state, the light spot formed by the first sub-beam 1111 of the first beam L11 on the optical element 190 at least partially overlaps with the light spots formed by the second sub-beam 1122 and the third sub-beam 1123 of the second beam L12 on the optical element 190, forming a first light spot group P1. The light spot formed by the first sub-beam 1121 of the second beam L12 on the optical element 190 at least partially overlaps with the light spots formed by the second sub-beam 1112 and the third sub-beam 1113 of the first beam L11 on the optical element, forming a second light spot group P2. The light spots formed by the first sub-beam 1141 of the third beam L13 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1152 and the third sub-beam 1153 of the fourth beam L14 on the optical element 190, forming a third light spot group P3. The light spots formed by the first sub-beam 1151 of the fourth beam L14 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1142 and the third sub-beam 1143 of the third beam L13 on the optical element, forming a fourth light spot group P4. The first light spot group P1, the second light spot group P2, the third light spot group P3, and the fourth light spot group P4 are arranged alternately in the first direction Y. The second light spot group P2, the fourth light spot group P4, the first light spot group P1, and the third light spot group P3 are arranged sequentially along the first direction Y.

[0145] Please refer to Figures 15 to 18 , Figure 15 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 15 and Figure 9The difference in this embodiment is that the lighting system 100c further includes a second optical element 118. In the second direction X, the second optical element 118 is disposed between the first light source module 111 and the second light source module 112 and the optical element 190. The second optical element 118 and the first optical element 117 are arranged along a third direction Z. The second optical element 118 is, for example, a reflector. The second optical element 118 is disposed parallel to the seventh extending direction D7 and the eighth extending direction D8. The seventh extending direction D7 is, for example, a direction parallel to the first direction Y. The eighth extending direction D8 is, for example, a direction parallel to the sixth extending direction D6. In this embodiment, the first optical element 117 is a transmissive and reflective optical element. A transmissive and reflective optical element is, for example, a beam splitter. A semi-transmittant, semi-reflective optics element allows a portion of the first beam L11, second beam L12, third beam L13', and fourth beam L14' to pass through, and reflects another portion of the first beam L11', second beam L12', third beam L13', and fourth beam L14'. The remaining portion of the first beam L11' and second beam L12', along with a portion of the third beam L13' and fourth beam L14', are transmitted to a second optics element 118. The second optics element 118 is positioned on the transmission path of a portion of the third beam L13' and fourth beam L14' from the first optics element 117, and is also positioned on the transmission path of another portion of the first beam L11' and second beam L12' from the first optics element 117. The second optical element 118 is used to reflect another portion of the first beam L11' and the second beam L12' and a portion of the third beam L13' and the fourth beam L14', so that the other portion of the first beam L11' and the second beam L12' and a portion of the third beam L13' and the fourth beam L14' are transmitted to the optical element 190.

[0146] Therefore, the first beam L11, the second beam L12, the third beam L13, and / or the fourth beam L14 can serve as the illumination beam L1 and be transmitted to the light valve module 200 through the optical element 190. The first beam L11 and the second beam L12, the third beam L13, and the fourth beam L14 form at least partially overlapping light spots on the optical element 190. Figure 18As shown, when the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B in the first light source module 111, the second light source module 112, the third light source module 114, and the fourth light source module 115 are all in the on state, the light spots formed by the first sub-beam 1111 of a portion of the first beam L11 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1122 and the third sub-beam 1123 of a portion of the second beam L12 on the optical element 190, forming a first light spot group P1. The light spots formed by the first sub-beam 1121 of a portion of the second beam L12 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1112 and the third sub-beam 1113 of a portion of the first beam L11 on the optical element, forming a second light spot group P2. The light spots formed by the first sub-beam 1141 of the third beam L13 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1152 and the third sub-beam 1153 of the fourth beam L14 on the optical element 190, forming a third light spot group P3. The light spots formed by the first sub-beam 1151 of the fourth beam L14 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1142 and the third sub-beam 1143 of the third beam L13 on the optical element, forming a fourth light spot group P4. The first light spot group P1, the second light spot group P2, the third light spot group P3, and the fourth light spot group P4 are arranged alternately in the first direction Y. The third light spot group P3, the first light spot group P1, the fourth light spot group P4, and the second light spot group P2 are arranged sequentially along the first direction Y. The light spots formed by the first sub-beam 1111 of the other portion of the first beam L11' on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1122 and the third sub-beam 1123 of the other portion of the second beam L12' on the optical element 190, forming a first sub-spot group P1'. The light spots formed by the first sub-beam 1121 of the other portion of the second beam L12 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1112 and the third sub-beam 1113 of the other portion of the first beam L11 on the optical element, forming a second sub-spot group P2'. The light spots formed by the first sub-beam 1141 of a portion of the third beam L13' on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1152 and the third sub-beam 1153 of a portion of the fourth beam L14' on the optical element 190, forming a third sub-spot group P3'. The light spots formed by the first sub-beam 1151 of the fourth beam L14' on the optical element 190 at least partially overlap with the light spots of the second sub-beam 1142 and the third sub-beam 1143 formed by the third beam L13' on the optical element, and form the fourth sub-spot group P4'.The first sub-spot group P1', the second sub-spot group P2', the third sub-spot group P3', and the fourth sub-spot group P4' are arranged alternately along the first direction Y. The second sub-spot group P2', the fourth sub-spot group P4', the first sub-spot group P1', and the third sub-spot group P3' are arranged sequentially along the first direction Y. The first spot group P1, the second spot group P2, the third spot group P3, and the fourth spot group P4 are respectively arranged along the third direction Z with the first sub-spot group P1', the second sub-spot group P2', the third sub-spot group P3', and the fourth sub-spot group P4'.

[0147] In this way, the first beam L1, the second beam L2, the third beam L3, and the fourth beam L4 can be dispersed to the first spot group P1, the second spot group P2, the third spot group P3, and the fourth spot group P4 corresponding to the first optical element 117, and the first sub-spot group P1', the second sub-spot group P2', the third sub-spot group P3', and the fourth sub-spot group P4' corresponding to the second optical element 118. This avoids the beam energy being concentrated in a specific area of ​​the optical element 190, which would cause a thermal lensing effect, and effectively improves the utilization rate of the optical element 190, thereby increasing the lifespan and efficiency of the optical element 190.

[0148] Please refer to Figures 19 to 22 , Figure 19 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 20 for Figure 19 Partial schematic diagram of an embodiment. Figure 21 This is a schematic diagram of an optical component according to an embodiment of the present invention. Figure 22 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 19 and Figure 15The difference in this embodiment is that the first light source module 111 and the second light source module 112 of the lighting system 100d are arranged side by side with the third light source module 114 and the fourth light source module 115 along the second direction X, respectively. The lighting system 100d also includes a third optical element 119. The first light source module 111 provides a first light beam L11 transmitted along the first direction Y, and the second light source module 112 provides a second light beam L12 transmitted along the third direction Z. In this embodiment, the configuration of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the first light source module 111 is the same as that of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the third light source module 114, and the configuration of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the second light source module 112 is the same as that of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the fourth light source module 115. In another embodiment, the configuration of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the first light source module 111 is reversed in the third direction Z compared to the configuration of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the third light source module 114. The configuration of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the second light source module 112 is reversed in the first direction Y compared to the configuration of the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B of the fourth light source module 115. That is, the first light-emitting unit R of the first light source module 111 is farther away from the third optical element 119 compared to the second light-emitting unit G and the third light-emitting unit B. The first light-emitting unit R of the second light source module 112 is farther away from the first light source module 111 compared to the second light-emitting unit G and the third light-emitting unit B. The first beam splitter 113 is used to reflect the first beam L11 and to allow the second beam L12 to pass through, so that the first beam L11 and the second beam L12 are transmitted to the third optical element 119 along the third direction Z. In this embodiment, the second light source module 112 and the fourth light source module 115 are offset from each other in the first direction Y. Therefore, the main beams of the first beam L11 and the second beam L12 transmitted toward the optical element 190 do not overlap with the main beams of the third beam L13 and the fourth beam L14.

[0149] The third optical element 119 is arranged along the second direction X with the first optical element 117. The third optical element 119 is arranged parallel to the ninth extension direction D9 and the tenth extension direction D10. The ninth extension direction D9 is, for example, parallel to the first direction Y. The tenth extension direction D10 is, for example, parallel to the sixth extension direction D6. The third optical element 119 is used to reflect the first light beam L11 from the first light source module 111 and the second light beam L12 from the second light source module 112, so that the first light beam L11 and the second light beam L12 are transmitted along the second direction X to the first optical element 117. The third optical element 119 is, for example, a reflector. The first optical element 117 and the second optical element 118 are arranged along the second direction X with the first optical element 117. Figure 12 The embodiments are the same, and therefore will not be described again here. Thus, the first beam L11, the second beam L12, the third beam L13, and / or the fourth beam L14 can serve as the illumination beam L1. Figure 22 As shown, when the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B in the first light source module 111, the second light source module 112, the third light source module 114, and the fourth light source module 115 are all in the on state, the first beam L11, the second beam L12, the third beam L13, and the fourth beam L14 can form a first light spot group P1, a second light spot group P2, a third light spot group P3, a fourth light spot group P4, a first sub-light spot group P1', a second sub-light spot group P2', a third sub-light spot group P3', and a fourth sub-light spot group P4' on the optical element 190. The composition of the first light spot group P1, the second light spot group P2, the third light spot group P3, the fourth light spot group P4, the first sub-light spot group P1', the second sub-light spot group P2', the third sub-light spot group P3', and the fourth sub-light spot group P4' is similar to... Figure 18 The implementation methods are the same, so they will not be repeated here.

[0150] Please refer to Figures 23 to 25 , Figure 23 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 24 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 25 This is a schematic diagram of an optical component according to an embodiment of the present invention. Figure 23 and Figure 19The difference in this embodiment is that the lighting system 100e further includes a fourth optical element 120. In this embodiment, a third optical element 119 allows the first beam L11' and the second beam L12' of the first portion to pass through and be transmitted to the fourth optical element 120. The third optical element 119 also reflects the first beam L11 and the second beam L12 of the second portion and transmits them to the first optical element 117. The fourth optical element 120 and the second optical element 118 are arranged along the second direction X. The fourth optical element 120 is arranged parallel to the eleventh extension direction D11 and the twelfth extension direction D12. The eleventh extension direction D11 is, for example, a direction parallel to the first direction Y. The twelfth extension direction D12 is, for example, a direction parallel to the eighth extension direction D8. The fourth optical element 120 reflects the first beam L11' and the second beam L12' of the first portion, allowing the first beam L11' and the second beam L12' of the first portion to be transmitted to the second optical element 118. The first optical element 117 is used to allow the third beam L13' and the fourth beam L14' of the first portion to pass through, and to reflect the third beam L13' and the fourth beam L14' of the second portion, and to allow the first beam L11' and the second beam L12' of the second portion from the third optical element 119 to pass through. The second optical element 118 is used to allow the first beam L11' and the second beam L12' of the first portion from the fourth optical element 120 to pass through, and to reflect the third beam L13' and the fourth beam L14' of the first portion from the first optical element 117.

[0151] In this embodiment, the first optical element 117 includes at least one half-reflection area 1173. For example, the first optical element 117 includes a plurality of half-reflection areas 1173 and a plurality of transmission areas 1174. The plurality of half-reflection areas 1173 and the plurality of transmission areas 1174 are arranged alternately. The plurality of half-reflection areas 1173 are used to allow the third beam L13' and the fourth beam L14' of the first portion to pass through, and to reflect the third beam L13 and the fourth beam L14 of the second portion. The plurality of transmission areas 1174 are used to allow the first beam L11 and the second beam L12 from the second portion of the third optical element 119 to pass through. In this embodiment, the second optical element 118 includes a plurality of reflection areas 1181 and a plurality of transmission areas 1182, and the plurality of reflection areas 1181 and the plurality of transmission areas 1182 of the second optical element 118 are arranged alternately. In one embodiment, the third optical element 119 includes at least one half-reflective region disposed on the transmission path of the first beam L11 and the second beam L12 from the first beam splitter 113. The third optical element 119 includes a plurality of half-reflective regions 1191 and a plurality of transmission regions 1192. The plurality of half-reflective regions 1191 allow the first portion of the first beam L11' and the second beam L12' to pass through and reflect the second portion of the first beam L11 and the second beam L12. In one embodiment, the third optical element 119 and the first optical element 117 may be the same component, differing only in their orientation. In another embodiment, the third optical element 119 may have only one half-reflective region; for example, the third optical element 119 may be a semi-transmitting, semi-reflective optical element. In one embodiment, the fourth optical element 120 includes at least one reflective region. The fourth optical element 120 includes a plurality of reflective regions 1201 and a plurality of transmission regions 1202. The plurality of reflective regions 1201 reflect the first portion of the first beam L11' and the second beam L12'. In one embodiment, the fourth optical element 120 and the second optical element 118 may be the same component, differing only in their orientation. In another embodiment, the fourth optical element 120 may be, for example, a reflector.

[0152] Therefore, the first beam L11, the second beam L12, the third beam L13, and / or the fourth beam L14 can serve as the illumination beam L1. For example... Figure 24As shown, when the first light-emitting unit R, the second light-emitting unit G, and the third light-emitting unit B in the first light source module 111, the second light source module 112, the third light source module 114, and the fourth light source module 115 are all in the on state, the first beam L11, the second beam L12, the third beam L13, and the fourth beam L14 form a first light spot group P1, a second light spot group P2, a third light spot group P3, a fourth light spot group P4, a first sub-light spot group P1', a second sub-light spot group P2', a third sub-light spot group P3', and a fourth sub-light spot group P4' on the optical element 190. The composition of the first light spot group P1, the second light spot group P2, the third light spot group P3, the fourth light spot group P4, the first sub-light spot group P1', the second sub-light spot group P2', the third sub-light spot group P3', and the fourth sub-light spot group P4' is similar to... Figure 18 The implementation methods are the same, so they will not be repeated here.

[0153] Please refer to Figures 26 to 27 , Figure 26 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 27 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 26 and Figure 23 The difference in the embodiment is that the lighting system 100f further includes a fifth light source module 121. The fifth light source module 121 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B, as shown below. Figure 4 As shown. The fifth light source module 121 is used to provide a fifth beam L15. The fifth beam L15 includes at least one of a first sub-beam 1211, a second sub-beam 1212, and a third sub-beam 1213. In this embodiment, at least half of the reflective area of ​​the third optics 119 is disposed on the transmission path of the fifth beam L15 from the fifth light source module 121. The third optics 119 is also used to reflect at least a portion of the fifth beam L15' so that a portion of the fifth beam L15' is transmitted to the fourth optics 120. The third optics 119 is also used to allow another portion of the fifth beam L15 to pass through so that the other portion of the fifth beam L15 is transmitted to the first optics 117. In this embodiment, the transmission paths of the fifth beam L15' reflected by the third optical element 119, the first beam L11' and the second beam L12' passing through the first part of the third optical element 119 overlap, and the transmission paths of the fifth beam L15 passing through the other part of the third optical element 119, the first beam L11 and the second beam L12 reflected by the third optical element 119 overlap.

[0154] In this embodiment, the light spots formed by the first sub-beam 1011 of the first beam L11 of the second part on the optical element 190 at least partially overlap with the light spots formed by the second sub-beams 1022 and 1023 of the second beam L12 of the second part and the second sub-beams 1212 and 1213 of the fifth beam L15 of the other part on the optical element 190, forming a first light spot group P1. The light spots formed by the second sub-beams 1012 and 1013 of the first beam L11 of the second part on the optical element 190 at least partially overlap with the light spots formed by the first sub-beam 1021 of the second beam L12 of the second part and the first sub-beam 1211 of the fifth beam L15 of the other part on the optical element 190, forming a first light spot group P2. The light spots formed by the first sub-beam 1011 of the first beam L11' on the optical element 190 at least partially overlap with the light spots formed by the second sub-beams 1022 and 1023 of the second beam L12' and the second sub-beams 1212 and 1213 of the fifth beam L15' on the optical element 190, forming a first sub-spot group P1. The light spots formed by the second sub-beams 1012 and 1013 of the first beam L11' on the optical element 190 at least partially overlap with the light spots formed by the first sub-beam 1021 of the second beam L12' and the first sub-beam 1211 of the fifth beam L15' on the optical element 190, forming a second sub-spot group P2'. In this embodiment, the first optical element 117, the second optical element 118, the third optical element 119, and the fourth optical element 120 and... Figure 20 The embodiments are the same, so they will not be described again here.

[0155] Please refer to Figures 28 to 31 , Figure 28 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 29 This is a schematic diagram of the configuration of a beam splitter element according to an embodiment of the present invention. Figure 30 This is a schematic diagram of a beam splitter embodiment of the present invention. Figure 31 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 28 and Figure 9The difference in the embodiment is that the lighting system 100g includes a fifth light source module 131, a sixth light source module 132, and a third beam splitter 133. The fifth light source module 131 and the sixth light source module 132 are respectively arranged side-by-side with the first light source module 111 and the second light source module 112 in the third direction Z. The fifth light source module 131 is used to provide a fifth light beam L15 transmitted along the first direction Y. The sixth light source module 132 is used to provide a sixth light beam L16 transmitted along the second direction X. The fifth light source module 131 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B. The fifth light beam L15 includes a first sub-beam 1311, a second sub-beam 1312, and a third sub-beam 1313. The sixth light source module 132 includes a first light-emitting unit R, a second light-emitting unit G, and a third light-emitting unit B. The sixth light beam L16 includes a first sub-beam 1321, a second sub-beam 1322, and a third sub-beam 1323. The third beam splitter 133 is disposed between the fifth light source module 131 and the sixth light source module 132. The third beam splitter 133 reflects the fifth beam L15 and allows the sixth beam L16 to pass through, thus transmitting both beams to the optical element 190. In this embodiment, the third beam splitter 133 and the first beam splitter 113 can be the same element. The third beam splitter 133 is disposed parallel to the thirteenth extension direction D13 and the fourteenth extension direction D14. The thirteenth extension direction D13 is, for example, a direction that forms a 45-degree angle with both the first direction Y and the second direction X. The fourteenth extension direction D14 is, for example, a direction parallel to the third direction Z. The extension plane of the third beam splitter 133 forms an angle θ5 with the extension plane of the fifth light source module 131, and the extension plane of the third beam splitter 116 forms an angle θ6 with the extension plane of the sixth light source module 132. Angles θ5 and θ6 are, for example, 45-degree angles. The third beam splitter 133 includes a first beam splitting region 1331 and a second beam splitting region 1332. The first beam splitting region 1331 and the second beam splitting region 1332 are arranged along the thirteenth extension direction D13. The first beam splitting region 1331 is used to reflect the first sub-beam 1311 of the fifth beam L15, allowing the first sub-beam 1311 of the fifth beam L15 to be transmitted to the optical element 190 along the second direction X, and allowing the second sub-beam 1322 and the third sub-beam 1323 of the sixth beam L16 to pass through. The second beam splitting region 1332 is used to reflect the second sub-beam 1312 and the third sub-beam 1313 of the fifth beam L15, allowing the second sub-beam 1312 and the third sub-beam 1313 of the fifth beam L15 to be transmitted to the optical element 190 along the second direction X, and allowing the first sub-beam 1321 of the sixth beam L16 to pass through. Multiple spots of the fifth beam L15 and multiple spots of the sixth beam L16 at least partially overlap on the optical element 190 to form the fifth spot group P5 and the sixth spot group P6.

[0156] In this embodiment, the light spots formed by the first sub-beam 1311 of the fifth beam L15 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1322 and the third sub-beam 1323 of the sixth beam L16 on the optical element 190, forming a fifth light spot group P5. The light spots formed by the first sub-beam 1321 of the sixth beam on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1312 and the third sub-beam 1313 of the fifth beam L15 on the optical element, forming a sixth light spot group P6. The fifth light spot group P5 and the sixth light spot group P6 are arranged along the first direction Y. The fifth light spot group P5 is located between the first light spot group P1 and the third light spot group P3 in the first direction Y, and the sixth light spot group P6 is located between the second light spot group P2 and the fourth light spot group P4 in the first direction Y. The fifth spot group P5 and the sixth spot group P6 are arranged along the third direction Z with the first spot group P1, the second spot group P2, the third spot group P3 and the fourth spot group P4.

[0157] Please refer to Figures 32 to 34 , Figure 32 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 33 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 34 This is a schematic diagram of an optical component according to an embodiment of the present invention. Figure 32 and Figure 28 The difference in the embodiment is that the lighting system 100h includes a second optical element 118. In this embodiment, the first optical element 117 is used to allow a portion of the third beam L13' and the fourth beam L14' to pass through, and to transmit a portion of the third beam L13' and the fourth beam L14' to the second optical element 118. The first optical element 117 is also used to reflect another portion of the third beam L13' and the fourth beam L14', allowing the other portion of the third beam L13' and the fourth beam L14' to be transmitted to the optical element 190. The second optical element 118 is used to allow a fifth beam L15 and a sixth beam L16 to pass through, and to reflect a portion of the third beam L13' and the fourth beam L14', allowing a portion of the third beam L13', a portion of the fourth beam L14', the fifth beam L15, and the sixth beam L16 to be transmitted to the optical element 190. In this embodiment, the light spots formed by the first sub-beam 1141 of a portion of the third beam L13' on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1152 and the third sub-beam 1153 of a portion of the fourth beam L14' on the optical element 190, forming a third sub-spot group P3'. The light spots formed by the first sub-beam 1151 of a portion of the fourth beam L14 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1142 and the third sub-beam 1143 of a portion of the third beam L13 on the optical element 190, forming a fourth sub-spot group P4'.

[0158] In this embodiment, the first optical element 117 includes a plurality of semi-reflective areas 1173 and a plurality of transmissive areas 1174. The plurality of semi-reflective areas 1173 and the plurality of transmissive areas 1174 are arranged alternately. The plurality of semi-reflective areas 1173 are used to reflect a portion of the third beam L13 and the fourth beam L14, allowing the other portion of the third beam L13 and the fourth beam L14 to be transmitted to the optical element 190. The plurality of semi-reflective areas 1173 are also used to allow a portion of the third beam L13' and the fourth beam L14' to pass through. The plurality of transmissive areas 1174 are used to allow the first beam L11 and the second beam L12 to pass through. The second optical element 118 includes a plurality of reflective areas 1181 and a plurality of transmissive areas 1182. The plurality of reflective areas 1181 and the plurality of transmissive areas 1182 are arranged alternately. The plurality of transmissive areas 1182 are used to allow the fifth beam L15 and the sixth beam L16 to pass through, and the plurality of reflective areas 1181 are used to reflect a portion of the third beam L13' and the fourth beam L14'. In this embodiment, the first optical element 117 and the second optical element 118 are arranged in parallel in the third direction Z.

[0159] Please refer to Figures 35 to 39 . Figure 35 This is a schematic diagram of a lighting system according to an embodiment of the present invention. Figure 36 This is a schematic diagram of the configuration of a beam splitter element according to an embodiment of the present invention. Figure 37 This is a schematic diagram of a beam splitter element according to an embodiment of the present invention. Figure 38 This is a schematic diagram of a light spot according to an embodiment of the present invention. Figure 39 This is a schematic diagram of an optical component according to an embodiment of the present invention. Figure 35 and Figure 32 The difference in the embodiments is that the lighting system 100i includes a seventh light source module 134, an eighth light source module 135, and a fourth beam splitter 136. The seventh light source module 134 includes a first sub-light-emitting unit R, a second sub-light-emitting unit G, and a third sub-light-emitting unit B. The seventh light source module 134 is used to provide a seventh light beam L17 transmitted along a first direction Y. The seventh light beam L17 includes at least one of the first sub-light beam 1341, the second sub-light beam 1342, and the third sub-light beam 1343. The eighth light source module 135 includes the first sub-light-emitting unit R, the second sub-light-emitting unit G, and the third sub-light-emitting unit B, as shown below. Figure 4As shown. The eighth light source module 135 provides an eighth beam L18 transmitted along the fourth direction -Z. The fourth direction -Z is parallel to and opposite to the third direction Z. The eighth beam L18 includes at least one of the first sub-beam 1351, the second sub-beam 1352, and the third sub-beam 1353. A fourth beam splitter 136 is disposed between the seventh light source module 134 and the eighth light source module 135, for reflecting the seventh beam L17 and for allowing the eighth beam L18 to pass through, allowing the seventh beam L17 and the eighth beam L18 to be transmitted toward the second optical element 118. In this embodiment, the fourth beam splitter 136 and the first beam splitter 113 may be the same element. The fourth beam splitter 136 is disposed parallel to the fifteenth extension direction D15 and the sixteenth extension direction D16. The fifteenth extension direction D15 is, for example, a direction at 45 degrees to the first direction Y and the fourth direction -Z, respectively. The sixteenth extension direction D16 is, for example, a direction parallel to the second direction X. The extension plane of the fourth beam splitter 136 forms an angle θ7 with the extension plane of the seventh light source module 134, and the extension plane of the fourth beam splitter 136 forms an angle θ8 with the extension plane of the eighth light source module 135. Angles θ7 and θ8 are, for example, 45 degrees. The fourth beam splitter 136 includes a first beam splitting region 1361 and a second beam splitting region 1362. The first beam splitting region 1361 and the second beam splitting region 1362 are arranged along the fifteenth extension direction D15. The first beam splitting region 1361 reflects the first sub-beam 1341 of the seventh beam L17, allowing the first sub-beam 1341 of the seventh beam L17 to be transmitted along the fourth direction -Z to the second optical element 118, and allowing the second sub-beam 1352 and the third sub-beam 1353 of the eighth beam L18 to pass through. The second beam splitting region 1362 is used to reflect the second sub-beam 1342 and the third sub-beam 1343 of the seventh beam L17, allowing the second sub-beam 1342 and the third sub-beam 1343 of the seventh beam L17 to be transmitted along the fourth direction -Z to the second optical element 118, and allowing the first sub-beam 1351 of the eighth beam L18 to pass through. In this embodiment, the first light source module 111, the second light source module 112, the first beam splitting element 113, the third light source module 114, the fourth light source module 115, the second beam splitting element 116, and the first optical element 117 can be derived from... Figure 8 The implementation is carried out in the example, and therefore will not be described in detail here.

[0160] In this embodiment, the second optical element 118 is used to allow the fifth beam L15 and the sixth beam L16 to pass through, and to reflect the seventh beam L17 and the eighth beam L18, so that the seventh beam L17 and the eighth beam L18 are transmitted to the optical element 190 along the second direction X. The second optical element 118 is arranged parallel to the seventeenth extension direction D17 and the eighteenth extension direction D18. The seventeenth extension direction D17 is, for example, a direction parallel to the first direction Y. The eighteenth extension direction D18 is, for example, a direction inclined to the second direction X. The reflective area 1181a of the second optical element 118 is used to reflect the second sub-beam 1352 and the third sub-beam 1353 of the eighth beam L18 and the first sub-beam 1341 of the seventh beam L17. The reflective area 1181b of the second optical element 118 is used to reflect the second sub-beam 1342 and the third sub-beam 1343 of the seventh beam L17 and the first sub-beam 1351 of the eighth beam L18. The penetration area 1182a of the second optical element 118 is used to allow the second sub-beam 1322 and the third sub-beam 1323 of the sixth beam L16 and the first beam 1311 of the fifth beam L15 to pass through. The penetration area 1182b of the second optical element 118 is used to allow the second sub-beam 1312 and the third sub-beam 1313 of the fifth beam L15 and the first beam 1321 of the sixth beam L16 to pass through. The fifth light source module 131 and the sixth light source module 132 are symmetrically arranged with the seventh light source module 134 and the eighth light source module 135 along the extension direction of the second optical element 118, respectively. The fifth light source module 131, the sixth light source module 132, the seventh light source module 134, the eighth light source module 135, and the second optical element 118 are respectively symmetrically arranged with the first light source module 111, the second light source module 112, the third light source module 114, the fourth light source module 115, and the first optical element 117 about the optical axis of the optical element 190 (not shown in the figure), and the optical axis of the aforementioned optical element 190 is parallel to the second direction X.

[0161] In this embodiment, the light spots formed by the first sub-beam 1341 of the seventh beam L17 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1352 and the third sub-beam 1353 of the eighth beam L18 on the optical element 190, forming a seventh light spot group P7. The light spots formed by the first sub-beam 1351 of the eighth beam L18 on the optical element 190 at least partially overlap with the light spots formed by the second sub-beam 1342 and the third sub-beam 1343 of the seventh beam L17 on the optical element, forming an eighth light spot group P8. The seventh light spot group P7 and the eighth light spot group P8 are arranged along the first direction Y. The fifth light spot group P5, the sixth light spot group P6, the seventh light spot group P7, and the eighth light spot group P8 are arranged alternately in the first direction Y. The sixth light spot group P6, the eighth light spot group P8, the fifth light spot group P5, and the seventh light spot group P7 are arranged sequentially in the first direction Y.

[0162] In summary, the lighting system and projection device of the embodiments of the present invention have at least one of the following advantages: the lighting system and projection device of the embodiments of the present invention allow at least two light spots to overlap at least partially on the optical element, which can effectively improve the brightness of the lighting beam without increasing the size of the projection device.

[0163] 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 present invention are still within the scope of the patent. Furthermore, no embodiment or claim of the present invention needs to achieve all the objectives, advantages, or features disclosed in the present invention. In addition, the abstract and headings are merely for assisting in patent document searches and are not intended to limit the scope of the present invention. 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, characterized in that, Include: A first light source module is used to provide a first light beam transmitted along a first direction, the first light beam including at least one of a first sub-beam, a second sub-beam, and a third sub-beam; A second light source module is configured to provide a second light beam propagating along a second direction, the second light beam including at least one of a first sub-beam, a second sub-beam, and a third sub-beam, wherein the first direction is different from the second direction; and A first beam splitter is disposed between the first light source module and the second light source module. The first beam splitter reflects the first light beam, allowing it to propagate along the second direction to the optical element. The first beam splitter also allows the second light beam to pass through and propagate along the second direction to the optical element. Wherein, the light spots formed by the first sub-beam of the first beam on the optical element at least partially overlap with the light spots formed by the second sub-beam and the third sub-beam of the second beam on the optical element, forming a first light spot group; the light spots formed by the first sub-beam of the second beam on the optical element at least partially overlap with the light spots formed by the second sub-beam and the third sub-beam of the first beam on the optical element, forming a second light spot group; the first light spot group and the second light spot group are arranged along the first direction.

2. The lighting system as described in claim 1, characterized in that, The first beam splitting element includes a first beam splitting region and a second beam splitting region. The first beam splitting region is used to reflect the second sub-beam and the third sub-beam of the first beam and allow the first sub-beam of the second beam to pass through. The second beam splitting region is used to reflect the first sub-beam of the first beam and allow the second sub-beam and the third sub-beam of the second beam to pass through.

3. The lighting system as described in claim 1, characterized in that, The first light source module includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, wherein the second light-emitting unit and the third light-emitting unit are arranged side by side, and the first light-emitting unit is located on the same side as the second light-emitting unit and the third light-emitting unit.

4. The lighting system as described in claim 1, characterized in that, The first light source module and the second light source module are configured in an L-shape.

5. The lighting system as claimed in claim 1, characterized in that, The lighting system also includes: The third light source module is used to provide a third beam of light that travels along the first direction; A fourth light source module is used to provide a fourth beam of light propagating along a third direction, which is different from the first direction and the second direction; The second beam splitter is disposed between the third light source module and the fourth light source module. The second beam splitter is used to reflect the third beam and to allow the fourth beam to pass through. as well as A first optical element is configured to allow at least a portion of the first beam and the second beam to pass through, and to reflect at least a portion of the third beam and the fourth beam, so that the first beam, the second beam, the third beam and the fourth beam are transmitted to the optical element. In this configuration, at least a portion of the multiple light spots formed by the third beam on the optical element and at least a portion of the multiple light spots formed by the fourth beam on the optical element at least partially overlap on the optical element to form a third light spot group and a fourth light spot group, wherein the third light spot group and the fourth light spot group are arranged along the first direction.

6. The lighting system as described in claim 5, characterized in that, The first optical element is a partitioned optical element, which includes a plurality of first penetrating areas and a plurality of first reflecting areas, which are arranged alternately.

7. The lighting system as claimed in claim 6, characterized in that, The third light source module and the fourth light source module are respectively symmetrically arranged with the first light source module and the second light source module along the extension direction of the first optical element, wherein a plurality of first penetration areas and a plurality of first reflection areas are arranged alternately along the extension direction.

8. The lighting system as claimed in claim 5, characterized in that, The first light spot group, the second light spot group, the third light spot group, and the fourth light spot group are arranged alternately in the first direction.

9. The lighting system as claimed in claim 5, characterized in that, The lighting system further includes a second optical element, wherein: The first optical element is a semi-transmissive, semi-reflective optical element, which allows a portion of the first beam, the second beam, the third beam, and the fourth beam to pass through, and reflects another portion of the first beam, the second beam, the third beam, and the fourth beam; and The second optical element is disposed on the transmission path of the third and fourth beams from the portion of the first optical element, and also disposed on the transmission path of the first and second beams from the other portion of the first optical element. The second optical element is used to reflect the first and second beams from the other portion and the third and fourth beams from the same portion, so that the first and second beams from the other portion and the third and fourth beams from the same portion are transmitted to the optical element. In this configuration, the plurality of light spots formed by the first beam of the other portion on the optical element and the plurality of light spots formed by the second beam of the other portion on the optical element at least partially overlap to form a first sub-spot group and a second sub-spot group. The plurality of light spots formed by the third beam of the other portion on the optical element and the plurality of light spots formed by the fourth beam of the other portion on the optical element at least partially overlap to form a third sub-spot group and a fourth sub-spot group. The first sub-spot group, the second sub-spot group, the third sub-spot group, and the fourth sub-spot group are arranged alternately in the first direction.

10. The lighting system as claimed in claim 9, characterized in that, The first light spot group, the second light spot group, the third light spot group, and the fourth light spot group are respectively arranged along the third direction with the first sub-light spot group, the second sub-light spot group, the third sub-light spot group, and the fourth sub-light spot group.

11. The lighting system as claimed in claim 10, characterized in that, The lighting system further includes a third optical element disposed on the transmission path of the first beam and the second beam from the first beam splitter, the third optical element being used to reflect at least a portion of the first beam and the second beam, so that at least a portion of the first beam and the second beam are transmitted to the first optical element.

12. The lighting system as claimed in claim 11, characterized in that, The first light source module and the second light source module are respectively arranged in parallel with the third light source module and the fourth light source module.

13. The lighting system as claimed in claim 11, characterized in that, The lighting system further includes a fourth optical element, wherein: The third optical element is used to allow the first beam and the second beam of the first portion to pass through and be transmitted to the fourth optical element; the third optical element is also used to reflect the first beam and the second beam of the second portion and transmit them to the first optical element; and The fourth optical element is used to reflect the first beam and the second beam of the first portion, so that the first beam and the second beam of the first portion are transmitted to the second optical element, and the second optical element is used to allow the first beam and the second beam of the first portion to pass through.

14. The lighting system as claimed in claim 13, characterized in that, The first optical element includes at least a half-reflective area; the second optical element includes multiple reflective areas and multiple penetrating areas, the multiple reflective areas and multiple penetrating areas of the second optical element being arranged alternately; the third optical element includes at least a half-reflective area; and the fourth optical element includes at least one reflective area.

15. The lighting system as claimed in claim 13, characterized in that, The lighting system further includes a fifth light source module for providing a fifth beam of light, wherein the third optics is used to reflect at least a portion of the fifth beam of light so that the portion of the fifth beam of light is transmitted to the fourth optics and to allow another portion of the fifth beam of light to pass through so that the portion of the fifth beam of light is transmitted to the first optics.

16. The lighting system as claimed in claim 5, characterized in that, The lighting system also includes: A fifth light source module is used to provide a fifth beam of light that propagates along the first direction; The sixth light source module is used to provide a sixth beam of light that travels along the second direction. The third beam splitter is used to reflect the fifth beam and to allow the sixth beam to pass through, so that the fifth beam and the sixth beam are transmitted to the optical element; In this configuration, at least a portion of the plurality of light spots formed by the fifth beam on the optical element and at least a portion of the plurality of light spots formed by the sixth beam on the optical element at least partially overlap on the optical element to form a fifth light spot group and a sixth light spot group, wherein the fifth light spot group and the sixth light spot group are arranged along the first direction.

17. The lighting system as claimed in claim 16, characterized in that, The fifth and sixth light spot groups are arranged along the third direction with the first, second, third, and fourth light spot groups.

18. The lighting system as claimed in claim 16, characterized in that, The fifth light source module and the sixth light source module are respectively arranged side by side with the first light source module and the second light source module.

19. The lighting system as claimed in claim 16, characterized in that, The lighting system further includes a second optical element, wherein: The first optical element is used to allow a portion of the third and fourth beams to pass through and to reflect another portion of the third and fourth beams; and The second optical element is used to allow the fifth and sixth beams to pass through, and to reflect portions of the third and fourth beams, so that portions of the third, fourth, fifth, and sixth beams are transmitted to the optical element.

20. The lighting system as claimed in claim 19, characterized in that, The first optical element includes a plurality of semi-reflective areas and a plurality of penetrating areas, and the plurality of semi-reflective areas and the plurality of penetrating areas of the first optical element are arranged alternately; the second reflective element includes a plurality of reflective areas and a plurality of penetrating areas, and the plurality of reflective areas and the plurality of penetrating areas of the second reflective element are arranged alternately.

21. The lighting system as claimed in claim 16, characterized in that, The lighting system also includes: A seventh light source module is used to provide a seventh beam of light that travels along the first direction; An eighth light source module is used to provide an eighth light beam that propagates along a fourth direction, the fourth direction being parallel to the third direction; The fourth beam splitter is used to reflect the seventh beam and to allow the eighth beam to pass through; The second optical element is used to allow the fifth and sixth beams to pass through, and to reflect the seventh and eighth beams, so that the seventh and eighth beams are transmitted to the optical element. In this arrangement, at least a portion of the plurality of light spots of the seventh beam and at least a portion of the plurality of light spots of the eighth beam at least partially overlap on the optical element to form a seventh light spot group and an eighth light spot group, wherein the seventh light spot and the eighth light spot are arranged along the first direction.

22. The lighting system as claimed in claim 21, characterized in that, The fifth light spot group, the sixth light spot group, the seventh light spot group, and the eighth light spot group are arranged alternately in the first direction.

23. The lighting system as claimed in claim 21, characterized in that, The first optical element and the second optical element include multiple reflective areas and multiple penetrating areas, which are arranged alternately.

24. The lighting system as claimed in claim 23, characterized in that, The fifth and sixth light source modules are symmetrically arranged with the seventh and eighth light source modules along the extension direction of the second optical element, respectively, wherein the plurality of transmission areas and the plurality of reflection areas of the second optical element are arranged alternately along the extension direction.

25. A projection device, characterized in that, Include: The lighting system of claim 1 is used to provide an illumination beam, the illumination beam comprising at least one of the first beam and the second beam from the optical element; A light valve module, located in the transmission path of the illumination beam, is used to convert the illumination beam into an image beam; and A projection lens is located on the transmission path of the image beam and is used to project the image beam out of the projection device.

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