Light source assembly, projection light machine, projector and stage lighting device

Abstract

The invention provides a light source assembly, a projection light machine, a projector and a stage lighting device, the light source assembly comprises a first laser light source module, a wavelength conversion module and a light splitting and combining module, the first laser light source module generates a first light beam with a first wavelength; the light-splitting and light-combining module comprises a first light-splitting and light-combining element and a second light-splitting and light-combining element which are arranged in a crossed manner; the first light splitting and combining element transmits the light with the first wavelength and reflects the light with the second wavelength; the second light splitting and combining element semi-transmits and semi-reflects the light with the first wavelength and transmits the light with the second wavelength; the first light beam is split into a first sub-light beam and a second sub-light beam after being subjected to semi-transmitting and semi-reflecting treatment by the second light splitting and combining element, the wavelength conversion module converts the first sub-light beam into a converted light beam with a second wavelength, and the converted light beam is combined with the second sub-light beam into a second light beam after being reflected by the first light splitting and combining element; and output light of the light source assembly. According to the invention, mixing and merging of light with different wavelengths are realized through a simple structure.

Description

Technical Field

[0001] The invention relates to the field of optical lighting, and in particular to a light source assembly, a projection optical machine, a projector and a stage lighting device. Background Art

[0002] The projection display method uses an optical system (projector) and projection space to display images on a projection screen. It meets the requirements of large-screen display very well and has been increasingly widely used. It is suitable for school teaching scenarios, daily home entertainment scenarios, and can also be used in industrial fields, etc.

[0003] Because projection display has become an important way of displaying pictures and videos nowadays, projectors have also become products popular among consumers. Taking into account the convenience of storing, carrying and using projectors, while ensuring reliable projection effects, further miniaturization of projectors (even in industrial application scenarios, the miniaturization of projectors is being pursued) has become a problem to be solved urgently in this field. How to achieve the miniaturization of light source components in projection devices has become one of the important constraints.

[0004] Even when projection display is not used, such as in stage lighting devices, miniaturization of light source components is desired from the perspective of improving installation convenience.

[0005] In summary, how to obtain a miniaturized light source component while ensuring a reliable lighting display effect has become a technical problem that urgently needs to be solved in the field of optical lighting, but has not yet been solved. Summary of the invention

[0006] Based on the above situation, the main purpose of the present invention is to provide a light source assembly, a projection optical machine, a projector and a stage lighting device, which can effectively realize the miniaturization of the light source assembly while ensuring the working reliability of the light source.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0008] In a first aspect, the present invention provides a light source assembly, including a first laser light source module, a wavelength conversion module and a light splitting and combining module.

[0009] The first laser light source module is used to generate a first light beam, the first light beam is projected to the light splitting and combining module, and the first light beam has a first wavelength;

[0010] The light-splitting and light-combining module comprises a first light-splitting and light-combining element and a second light-splitting and light-combining element, wherein the first light-splitting and light-combining element and the second light-splitting and light-combining element are arranged crosswise;

[0011] The first light splitting and combining element transmits light of a first wavelength and reflects light of a second wavelength;

[0012] The second light-splitting and light-combining element semi-transmits and semi-reflects light of the first wavelength and transmits light of the second wavelength;

[0013] The first light beam is split into a first sub-beam and a second sub-beam after being semi-transmissive and semi-reflective by the second light-splitting and light-combining element, the wavelength conversion module is arranged on the path of the first sub-beam, and is used to convert the first sub-beam into a converted light beam, and project the converted light beam to the light-splitting and light-combining module, and the converted light beam has a second wavelength;

[0014] After being reflected by the first light-splitting and light-combining element, the converted light beam is combined with the second sub-beam to form a second light beam, and the second light beam is the output light of the light source assembly.

[0015] Preferably, the first laser light source module and the wavelength conversion module are perpendicular to each other, and the first sub-beam is obtained after the first beam is reflected by the second light-splitting and light-combining element.

[0016] Preferably, the light of the first wavelength is blue light, and the light of the second wavelength is yellow light.

[0017] Preferably, the light source assembly further comprises a second light source module, the second light source module is used to generate a third light beam, the third light beam is projected toward the light splitting and combining module, and the third light beam has a third wavelength;

[0018] The first light splitting and combining element transmits light of a third wavelength;

[0019] The second light splitting and combining element reflects light of a third wavelength;

[0020] After being transmitted through the first light-splitting and light-combining element and reflected through the second light-splitting and light-combining element, the third light beam is combined with the second light beam to form a fourth light beam, and the fourth light beam is the output light of the light source assembly.

[0021] Preferably, the light of the first wavelength is blue light, the light of the second wavelength is green light, and the light of the third wavelength is red light.

[0022] Preferably, the first laser light source module and the wavelength conversion module are parallel to each other, and the first sub-beam is obtained after the first beam is transmitted through the second light-splitting and light-combining element.

[0023] Preferably, the light of the first wavelength is blue light, and the light of the second wavelength is yellow light.

[0024] Preferably, the light source assembly further comprises a third light source module, the third light source module is used to generate a fifth light beam, the fifth light beam is projected toward the light splitting and light combining module, and the fifth light beam has a fifth wavelength;

[0025] The first light splitting and light combining element transmits light of a fifth wavelength;

[0026] The second light-splitting and light-combining element transmits light of a fifth wavelength;

[0027] After being transmitted through the first light splitting and light combining element and the second light splitting and light combining element, the fifth light beam is combined with the second light beam to form a sixth light beam, and the sixth light beam is the output light of the light source assembly.

[0028] Preferably, the light of the first wavelength is blue light, the light of the second wavelength is green light, and the light of the fifth wavelength is red light.

[0029] Preferably, the angle between the first light-splitting and light-combining element and the second light-splitting and light-combining element is 90°, and the angles between the optical axis of the first light beam and the first light-splitting and light-combining element and the second light-splitting and light-combining element are both 45°.

[0030] Preferably, the intersection point of the axis of the first light-splitting and light-combining element and the axis of the second light-splitting and light-combining element is point A, and there is a gap near point A in the second light-splitting and light-combining element.

[0031] Preferably, the first laser light source module includes a first laser light-emitting element and a first shaping lens module, and the first shaping lens module collimates the light emitted by the first laser light-emitting element to obtain the first light beam.

[0032] Preferably, the wavelength conversion module includes a wavelength conversion element and a second shaping lens module, the second shaping lens module converges the first sub-beam and projects it onto the wavelength conversion element, and collimates the light of the second wavelength generated by the wavelength conversion element to obtain the converted light beam.

[0033] In a second aspect, the present invention provides a projection optical engine, comprising the light source assembly as described above.

[0034] In a third aspect, the present invention provides a projector, comprising the projection optical engine as described above.

[0035] In a fourth aspect, the present invention provides a stage lighting device, comprising the light source assembly as described above.

[0036] The light source assembly provided by the present invention includes a first laser light source module, a wavelength conversion module and a light-splitting and light-combining module, wherein the light-splitting and light-combining module includes a first light-splitting and light-combining element and a second light-splitting and light-combining element. The first light beam is processed by the light-splitting and light-combining module and is divided into a first sub-beam and a second sub-beam, wherein the first sub-beam is converted into a converted light beam with a second wavelength by the wavelength conversion module, and the second sub-beam retains the original first wavelength. The converted light beam and the second sub-beam of different wavelengths are mixed and combined into a second light beam (the second light beam can be, for example, white light), which is used as the output light of the light source assembly. The merging of lights of different wavelengths (different colors) is achieved through a simple structure, and there is no need to cooperate with other optical elements not mentioned in the present invention, such as reflectors, to help the first light beam and / or the converted light beam to change the light path. The number of optical elements used in the light source assembly is small, the structure is simple, and it is easy to manufacture. On the basis of fully ensuring the reliability of use, the miniaturization of the light source assembly is also effectively achieved.

[0037] Other beneficial effects of the present invention will be explained in the specific implementation manner through the introduction of specific technical features and technical solutions. Through the introduction of these technical features and technical solutions, those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0039] Figure 1 A schematic structural diagram of a preferred embodiment of a light source assembly provided by the present invention;

[0040] Figure 2 This is a structural schematic diagram of another preferred embodiment of the light source assembly provided by the present invention;

[0041] Figure 3 This is a structural schematic diagram of another preferred embodiment of the light source assembly provided by the present invention;

[0042] Figure 4 This is a structural schematic diagram of another preferred embodiment of the light source assembly provided by the present invention;

[0043] Figure 5 This is a structural schematic diagram of another preferred embodiment of the light source assembly provided by the present invention;

[0044] Figure 6 This is a schematic structural diagram of a preferred embodiment of the projection optical machine provided by the present invention.

[0045] Explanation of reference numerals: first laser light source module: 100; wavelength conversion module: 200; light splitting and light combining module: 300; first light splitting and light combining element: 310; second light splitting and light combining element: 320; first part: 321; second part: 322; second light source module: 400; third light source module: 500. DETAILED DESCRIPTION

[0046] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid confusing the essence of the present invention, known methods, processes, procedures, and components are not described in detail.

[0047] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0048] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0049] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0050] First, see Appendix Figure 1-6 The present invention provides a light source assembly, including a first laser light source module 100, a wavelength conversion module 200 and a light splitting and combining module 300,

[0051] The first laser light source module 100 is used to generate a first light beam, the first light beam is projected to the light splitting and combining module 300, and the first light beam has a first wavelength;

[0052] The light-splitting and light-combining module 300 includes a first light-splitting and light-combining element 310 and a second light-splitting and light-combining element 320, wherein the first light-splitting and light-combining element and the second light-splitting and light-combining element 320 are arranged crosswise;

[0053] The first light-splitting and light-combining element 310 transmits light of the first wavelength and reflects light of the second wavelength;

[0054] The second light-splitting and light-combining element 320 semi-transmits and semi-reflects light of the first wavelength and transmits light of the second wavelength;

[0055] The first light beam is split into a first sub-beam and a second sub-beam after being semi-transmissive and semi-reflective by the second light-splitting and light-combining element 320, and the wavelength conversion module 200 is arranged on the path of the first sub-beam, and is used to convert the first sub-beam into a converted light beam, and project the converted light beam to the light-splitting and light-combining module 300, and the converted light beam has a second wavelength;

[0056] After being reflected by the first light-splitting and light-combining element 310 , the converted light beam is combined with the second sub-beam to form a second light beam, and the second light beam is the output light of the light source assembly.

[0057] Specifically, the light source assembly provided by the present invention has a relatively simple structure. It utilizes the first laser light source module 100 to emit a monochromatic laser (i.e., a first light beam having a first wavelength), and the light-splitting and light-combining module 300 is located on the optical path of the first laser light source module 100. One of the purposes of the light-splitting and light-combining module 300 is to split the first light beam. After splitting, a portion of the first light beam (i.e., the first sub-beam) enters the wavelength conversion module 200, and the other portion (i.e., the second sub-beam) is emitted forward ("forward" refers to maintaining the emission direction of the first light beam just when it leaves the first laser light source module 100, and the aforementioned "just left" refers to the light path direction of the light beam not yet changed by the light-splitting and light-combining module 300). The wavelength conversion module 200 converts the first light beam incident therein into light of another color (i.e., a converted light beam having a second wavelength), and emits it on the light-splitting and light-combining module 300. After reflection by the light-splitting and light-combining module 300, it is merged with the second sub-beam emitted forward to form a second light beam. The second light beam is the output light of the light source assembly. The wavelength conversion module 200 may have phosphors. After the first sub-beam enters the wavelength conversion module 200, the phosphors absorb the first sub-beam and emit a converted beam, so that the first sub-beam with the first wavelength is converted into a converted beam with the second wavelength.

[0058] In order to realize the desired light splitting and light combining function of the light splitting and light combining module 300 of the present invention, the light splitting and light combining module 300 includes a first light splitting and light combining element 310 and a second light splitting and light combining element 320 which are cross-arranged, and the first light splitting and light combining element 310 transmits light of the first wavelength and reflects light of the second wavelength; the second light splitting and light combining element 320 semi-transmits and semi-reflects light of the first wavelength (thereby performing light splitting processing on the first light beam) and transmits light of the second wavelength. Therefore, after the first light beam is semi-transmitted and semi-reflected by the second light splitting and light combining element 320, it can be divided into a first sub-beam and a second sub-beam, and the second sub-beam is the part of the first light beam after it is transmitted through the second light splitting and light combining element 320 and can continue forward; the first sub-beam is the part of the first light beam after it is reflected by the second light splitting and light combining element 320, and it enters the wavelength conversion module 200 (even if it encounters the first light splitting and light combining element 310 in the process of entering the wavelength conversion module 200, but because the first light splitting and light combining element 310 can transmit the first wavelength Therefore, the first sub-beam can still smoothly pass through the first light-splitting and light-combining element 310 to reach the wavelength conversion module 200), and is converted by the wavelength conversion module 200 into a converted light beam with a second wavelength. After the converted light beam leaves the wavelength conversion module 200 and is emitted, due to its second wavelength, it is reflected when encountering the first light-splitting and light-combining element 310 and is transmitted when encountering the second light-splitting and light-combining element 320. Therefore, after being processed by the light-splitting and light-combining module 300, it can be combined with the second sub-beam into a second light beam, and the second light beam is the output light of the light source assembly.

[0059] As can be seen from the above, the light source assembly provided by the present invention, by setting a first laser light source module 100, a wavelength conversion module 200 and a light-splitting and combining module 300, and making the light-splitting and combining module 300 include a first light-splitting and combining element 310 and a second light-splitting and combining element 320, can make the first light beam be processed by the light-splitting and combining module 300, and the first sub-beam is converted by the wavelength conversion module 200 into a converted light beam with a second wavelength, and the second sub-beam retains the original first wavelength, and the converted light beam and the second sub-beam of different wavelengths are merged into a second light beam, which is used as the output light of the light source assembly. Through a simple structure, it is achieved that lights of different colors (different wavelengths) are generated by a single light source, which realizes the merging of lights of different colors, and does not need to cooperate with other optical elements not mentioned by the present invention, such as reflectors, to help the first light beam and / or the converted light beam to change the optical path. The number of optical elements used in the light source assembly is small, the structure is simple, and it is easy to manufacture. On the basis of fully ensuring the reliability of use, the miniaturization of the light source assembly is also effectively achieved.

[0060] Preferably, see Appendix Figure 1 The first laser light source module 100 and the wavelength conversion module 200 are perpendicular to each other, and the first sub-beam is obtained after the first beam is reflected by the second light splitting and combining element 320.

[0061] The above “perpendicular to each other” means that the optical axis of the first light beam just leaving the first laser light source module 100 and the optical axis of the converted light beam just leaving the wavelength conversion module 200 are perpendicular to each other.

[0062] Preferably, the light of the first wavelength is blue light, and the light of the second wavelength is yellow light.

[0063] At this time, the first light beam generated by the first laser light source module 100 encounters the first sub-beam processed by the lightsplitting and combining module 300, which is obtained after the first light beam is reflected by the second lightsplitting and combining element 320. The reflection of the second lightsplitting and combining element 320 changes the optical path of the first sub-beam, making it change from forward to perpendicular to the forward direction, thereby smoothly entering the wavelength conversion module 200 which is perpendicular to the first laser light source module 100. After being processed by the wavelength conversion module 200, the first sub-beam with the first wavelength becomes a converted beam with the second wavelength. In this case, the second sub-beam of the first light beam after being transmitted by the second light-splitting and light-combining element 320 still emits forward. Even if it encounters the first light-splitting and light-combining element 310 during the emission process, because the second sub-beam has the first wavelength, it can be smoothly transmitted and emitted. The converted light beam with the second wavelength is reflected when it encounters the first light-splitting and light-combining element 310, and is transmitted when it encounters the second light-splitting and light-combining element 320, so it can also emit forward after being processed by the light-splitting and light-combining module 300, and it and the second sub-beam are merged into the second light beam to become the output light of the light source assembly.

[0064] When the light of the first wavelength is blue light and the light of the second wavelength is yellow light, the second sub-beam is obviously blue light, and the converted light beam is yellow light. The two can be combined to become white light, so that the light source assembly can output white light.

[0065] Preferably, see Appendix Figure 2 , the light source assembly further includes a second light source module 400, the second light source module 400 is used to generate a third light beam, the third light beam is projected to the light splitting and combining module 300, and the third light beam has a third wavelength;

[0066] The first light-splitting and light-combining element 310 transmits light of a third wavelength;

[0067] The second light-splitting and light-combining element 320 reflects light of a third wavelength;

[0068] After being transmitted through the first light-splitting and light-combining element 310 and reflected through the second light-splitting and light-combining element 320 , the third light beam is combined with the second light beam to form a fourth light beam, which is the output light of the light source assembly.

[0069] Preferably, the light of the first wavelength is blue light, the light of the second wavelength is green light, and the light of the third wavelength is red light.

[0070] Attached Figure 2 The embodiment shown and the attached Figure 1 In comparison, the second light source module 400 is more, which can be perpendicular to the first laser light source module 100 and opposite to the wavelength conversion module 200 through the light splitting and combining module 300. The second light source module 400 can be a laser light source or other forms of light sources (such as LED light sources).

[0071] By introducing the second light source module 400, the present invention can obtain the final white light for output by mixing three basic colors. At this time, the light of the first wavelength can be, for example, blue light, the fluorescent powder of the wavelength conversion module 200 can be, for example, green, so that the converted light beam with the second wavelength can be green light, and the light of the third wavelength can be, for example, red light.

[0072] In order to ensure that the light with the third wavelength emitted by the second light source module 400 is not blocked by the light-splitting and light-combining element, in this embodiment, the first light-splitting and light-combining element 310 is designed to transmit the light of the third wavelength, and the second light-splitting and light-combining element 320 is designed to reflect the light of the third wavelength. Thus, the third light beam with the third wavelength can be combined with the second light beam obtained by combining the second sub-beam and the converted light beam, thereby obtaining a fourth light beam as the output light of the light source assembly.

[0073] Preferably, see Appendix Figure 3 The first laser light source module 100 and the wavelength conversion module 200 are parallel to each other, and the first sub-beam is obtained after the first beam is transmitted through the second light splitting and combining element 320.

[0074] The above “parallel to each other” means that the optical axis of the first light beam just emitted from the first laser light source and the optical axis of the converted light beam just emitted from the wavelength conversion module 200 are parallel to each other.

[0075] Preferably, the light of the first wavelength is blue light, and the light of the second wavelength is yellow light.

[0076] At this time, the first light beam generated by the first laser light source module 100 encounters the first sub-beam processed by the lightsplitting and combining module 300. The first light beam is obtained after the first light beam is transmitted by the second lightsplitting and combining element 320. Therefore, the second lightsplitting and combining element 320 does not change the optical path of the first sub-beam, so that it is still in the forward direction (referring to continuing forward in the direction just leaving the first laser light source module 100), thereby successfully incident on the wavelength conversion module 200 which is parallel to the first laser light source module 100. After being processed by the wavelength conversion module 200, the first sub-beam with the first wavelength becomes a converted beam with the second wavelength. In this case, the second sub-beam of the first light beam after being reflected by the second light-splitting and light-combining element 320 is emitted perpendicularly to the aforementioned forward direction. Even if it encounters the first light-splitting and light-combining element 310 during the emission process, because the second sub-beam has the first wavelength, it can be smoothly transmitted and emitted. The converted light beam with the second wavelength is reflected when it encounters the first light-splitting and light-combining element 310, and is transmitted when it encounters the second light-splitting and light-combining element 320, so it can also be emitted perpendicularly to the aforementioned forward direction after being processed by the light-splitting and light-combining module 300, and it and the second sub-beam are merged into the second light beam to become the output light of the light source assembly.

[0077] When the light of the first wavelength is blue light and the light of the second wavelength is yellow light, the second sub-beam is obviously blue light, and the converted light beam is yellow light. The two can be combined to become white light, so that the light source assembly can output white light.

[0078] Preferably, see Appendix Figure 4 , the light source assembly further includes a third light source module 500, the third light source module 500 is used to generate a fifth light beam, the fifth light beam is projected toward the light splitting and combining module 300, and the fifth light beam has a fifth wavelength;

[0079] The first light-splitting and light-combining element 310 transmits light of a fifth wavelength;

[0080] The second light-splitting and light-combining element 320 transmits light of a fifth wavelength;

[0081] After being transmitted through the first light splitting and light combining element 310 and the second light splitting and light combining element 320 , the fifth light beam is combined with the second light beam to form a sixth light beam, and the sixth light beam is the output light of the light source assembly.

[0082] Preferably, the light of the first wavelength is blue light, the light of the second wavelength is green light, and the light of the fifth wavelength is red light.

[0083] Attached Figure 4 The embodiment shown and the attached Figure 3In comparison, the third light source module 500 is additional, and in this case, the third light source module 500 can be perpendicular to the first laser light source module 100. The third light source module 500 can be a laser light source or other forms of light sources (such as LED light sources).

[0084] By introducing the third light source module 500, the present invention can obtain the final white light for output by mixing three basic colors. At this time, the light of the first wavelength can be, for example, blue light, the fluorescent powder of the wavelength conversion module 200 can be, for example, green, so that the converted light beam with the second wavelength can be green light, and the light of the fifth wavelength can be, for example, red light.

[0085] In order to ensure that the light with the fifth wavelength emitted by the third light source module 500 is not blocked by the light-splitting and light-combining element, in this embodiment, the first light-splitting and light-combining element 310 and the second light-splitting and light-combining element 320 are both designed to transmit light of the fifth wavelength. Thus, the fifth light beam with the fifth wavelength can be combined with the second light beam obtained by combining the second sub-beam and the converted light beam, thereby obtaining the sixth light beam as the output light of the light source assembly.

[0086] Preferably, see Appendix Figure 1-6 The angle between the first light-splitting and light-combining element 310 and the second light-splitting and light-combining element 320 is 90°, and the angles between the optical axis of the first light beam and the first light-splitting and light-combining element 310 and the second light-splitting and light-combining element 320 are both 45°.

[0087] Through such an arrangement, the relative placement positions of the various light-splitting and light-combining elements are regular, which is convenient for installation, and the change in the optical path of the first light beam after passing through the light-splitting and light-combining module 300 is also easy to grasp. The design and manufacturing difficulty of optical lighting equipment such as projection light machines and stage lighting devices using the light source assembly is therefore reduced, and it is also convenient for them to have a compact appearance.

[0088] Preferably, see Appendix Figure 5 The intersection point of the axis of the first light-splitting and light-combining element 310 and the axis of the second light-splitting and light-combining element 320 is point A, and there is a gap in the second light-splitting and light-combining element near point A.

[0089] By setting the above notch, the second light splitting element 320 is divided into two parts, namely the first part 321 and the second part 322. At this time, the size of the area and the degree of processing of the light beam by the second light splitting and light combining element 320 can be achieved by adjusting the size of the notch. Of course, the first light splitting and light combining element 310 can also have a notch near point A, and the size of the area and the degree of processing of the light beam by the first light splitting and light combining element 310 can be adjusted by adjusting the size of the notch on the first light splitting and light combining element.

[0090] exist Figure 5 In the illustrated embodiment, the second light-splitting and light-combining element 320 cannot perform semi-transmissive and semi-reflective processing on the portion of the first light beam passing through the gap at the gap, but can only allow the portion of the first light beam to pass completely through the gap, thereby adjusting the mixing ratio of the converted light beam obtained after the first light beam is processed by the light-splitting and light-combining element and the second sub-beam. In the case where the gap is larger, the luminous flux ratio of the first sub-beam to the second sub-beam is smaller. Then, after the first sub-beam is converted into the converted light beam by the wavelength conversion module 200, the luminous flux ratio of the converted light beam to the second sub-beam obviously becomes smaller as the gap becomes larger. Thus, the mixing ratio of light of different colors (different wavelengths) in the second light beam can be adjusted, and finally the luminous color of the second light beam is adjusted.

[0091] Preferably, the first laser light source module 100 includes a first laser light-emitting element and a first shaping lens module, and the first shaping lens module collimates the light emitted by the first laser light-emitting element to obtain the first light beam.

[0092] Preferably, the wavelength conversion module 200 includes a wavelength conversion element and a second shaping lens module, the second shaping lens module converges the first sub-beam and projects it onto the wavelength conversion element, and collimates the light of the second wavelength generated by the wavelength conversion element to obtain the converted light beam.

[0093] Through the above arrangement, a collimated first light beam and a converted light beam can be obtained through a simple structural form, which is conducive to designing and grasping the emission directions of these light beams after being subsequently processed by the light splitting and combining module 300.

[0094] In a second aspect, the present invention provides a projection optical engine, comprising the light source assembly as described above.

[0095] Third, see Appendix Figure 6 The present invention also provides a projector, comprising the projection optical machine as described above.

[0096] In a fourth aspect, the present invention provides a stage lighting device, comprising the light source assembly as described above.

[0097] Those skilled in the art will appreciate that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0098] It should be understood that the above-mentioned embodiments are merely illustrative and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by those skilled in the art to the above-mentioned details will all be included in the scope of the claims of the present invention.

Claims

1. A light source assembly, characterized in that: It includes a first laser light source module, a wavelength conversion module and a light splitting and combining module. The first laser light source module is used to generate a first light beam, the first light beam is projected to the light splitting and combining module, and the first light beam has a first wavelength; The light-splitting and light-combining module comprises a first light-splitting and light-combining element and a second light-splitting and light-combining element, wherein the first light-splitting and light-combining element and the second light-splitting and light-combining element are arranged crosswise; The first light splitting and combining element transmits light of a first wavelength and reflects light of a second wavelength; The second light-splitting and light-combining element semi-transmits and semi-reflects light of the first wavelength and transmits light of the second wavelength; The first light beam is split into a first sub-beam and a second sub-beam after being semi-transmissive and semi-reflective by the second light-splitting and light-combining element, the wavelength conversion module is arranged on the path of the first sub-beam, and is used to convert the first sub-beam into a converted light beam, and project the converted light beam to the light-splitting and light-combining module, and the converted light beam has a second wavelength; After being reflected by the first light-splitting and light-combining element, the converted light beam is combined with the second sub-beam to form a second light beam, and the second light beam is the output light of the light source assembly.

2. The light source assembly according to claim 1, characterized in that: The first laser light source module and the wavelength conversion module are perpendicular to each other, and the first sub-beam is obtained after the first beam is reflected by the second light-splitting and light-combining element.

3. The light source assembly according to claim 2, characterized in that: The light of the first wavelength is blue light, and the light of the second wavelength is yellow light.

4. The light source assembly according to claim 2, characterized in that: The light source assembly further includes a second light source module, the second light source module is used to generate a third light beam, the third light beam is projected to the light splitting and combining module, and the third light beam has a third wavelength; The first light splitting and combining element transmits light of a third wavelength; The second light splitting and combining element reflects light of a third wavelength; After being transmitted through the first light-splitting and light-combining element and reflected through the second light-splitting and light-combining element, the third light beam is combined with the second light beam to form a fourth light beam, and the fourth light beam is the output light of the light source assembly.

5. The light source assembly according to claim 4, characterized in that: The light of the first wavelength is blue light, the light of the second wavelength is green light, and the light of the third wavelength is red light.

6. The light source assembly according to claim 1, characterized in that: The first laser light source module and the wavelength conversion module are parallel to each other, and the first sub-beam is obtained after the first beam is transmitted through the second light-splitting and light-combining element.

7. The light source assembly according to claim 6, characterized in that: The light of the first wavelength is blue light, and the light of the second wavelength is yellow light.

8. The light source assembly according to claim 6, characterized in that: The light source assembly further includes a third light source module, the third light source module is used to generate a fifth light beam, the fifth light beam is projected toward the light splitting and combining module, and the fifth light beam has a fifth wavelength; The first light splitting and light combining element transmits light of a fifth wavelength; The second light-splitting and light-combining element transmits light of a fifth wavelength; After being transmitted through the first light splitting and light combining element and the second light splitting and light combining element, the fifth light beam is combined with the second light beam to form a sixth light beam, and the sixth light beam is the output light of the light source assembly.

9. The light source assembly according to claim 8, characterized in that: The light of the first wavelength is blue light, the light of the second wavelength is green light, and the light of the fifth wavelength is red light.

10. The light source assembly according to any one of claims 1 to 9, characterized in that: The included angle between the first light-splitting and light-combining element and the second light-splitting and light-combining element is 90°, and the included angles between the optical axis of the first light beam and the first light-splitting and light-combining element and the second light-splitting and light-combining element are both 45°.

11. The light source assembly according to claim 10, characterized in that: The intersection point of the axis of the first light-splitting and light-combining element and the axis of the second light-splitting and light-combining element is point A, and there is a gap near point A in the second light-splitting and light-combining element.

12. The light source assembly according to claim 1, characterized in that: The first laser light source module includes a first laser light-emitting element and a first shaping lens module. The first shaping lens module collimates the light emitted by the first laser light-emitting element to obtain the first light beam.

13. The light source assembly according to any one of claims 1 to 12, characterized in that: The wavelength conversion module includes a wavelength conversion element and a second shaping lens module. The second shaping lens module converges the first sub-beam and projects it onto the wavelength conversion element, and collimates the light of the second wavelength generated by the wavelength conversion element to obtain the converted beam.

14. A projection optical machine, characterized in that: The light source assembly comprises the light source assembly described in any one of claims 1-13.

15. A projector, characterized in that: Including the projection light machine described in claim 14.

16. A stage lighting device, characterized in that: The light source assembly comprises the light source assembly described in any one of claims 1-13.

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