Light machine and projection equipment
By designing a detachable cover and a multi-functional housing in the optical engine of the projection device, flexible switching of the optical path is achieved, solving the problem of high cost of replacing the optical path scheme of the optical engine, and improving brightness and structural compactness.
Patent Information
- Application Number
- CN202520344032.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-28
AI Technical Summary
When changing the optical path scheme of existing projection equipment, the optical engine needs to be rebuilt, resulting in high resource costs and a large consumption of manpower and material resources.
Design an optical engine and projection device that uses a detachable cover and a multi-functional housing, with two mounting positions and a fixing base inside, which can adapt to two optical path installation methods and achieve optical path switching by replacing the dichroic mirror.
Production costs have been reduced, and brightness has been improved by combining laser modules and LED light sources, eliminating speckle phenomena and making the optomechanical structure compact and miniaturized.
Smart Images
Figure CN223784618U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to projection equipment technical field especially relates to a light machine and projection equipment. BACKGROUND
[0002] With the progress of science and technology and the improvement of people's living standards, projection equipment appears more and more in people's work and life, and the demand for projection equipment in families is also increasing, which also makes the existing projection equipment more and more diversified. Among the existing projector light machines, the mounting structure can usually only adapt to one light path scheme, and when another light path scheme light machine needs to be produced, a mold needs to be re-created, which will cause great resource cost and consume a lot of manpower and material resources. CONTENT OF UTILITY MODEL
[0003] To solve the above technical problems, the utility model provides a light machine and projection equipment, which can adapt to two light path mounting modes based on one shell and can switch assembly according to actual production needs, thereby reducing production cost.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] Firstly, the utility model discloses a light machine, which comprises a shell, a cover plate, a light source assembly and an optical mirror assembly. An installation cavity is formed in the shell. The cover plate is detachably arranged on the opening side of the installation cavity. The light source assembly comprises a first light source and a second light source. The first light source and the second light source are arranged on the shell. The light emitting directions of the first light source and the second light source are perpendicular to each other and are parallel to the plane on which the opening side of the installation cavity is located. The optical mirror assembly comprises a first dichroic mirror. An installation part for installing the first dichroic mirror is arranged in the installation cavity. The installation part is located on the light emitting side of the first light source and the second light source. The installation part is provided with a first installation position and a second installation position. The first dichroic mirror is installed on the first installation position or the second installation position. The first dichroic mirror installed on the first installation position is perpendicular to the first dichroic mirror installed on the second installation position. A fixing seat is arranged in the installation cavity. The fixing seat is located on the side of the first dichroic mirror away from the second light source. The fixing seat is provided with an inclined surface for installing a reflecting mirror. The inclined surface is inclined towards the opening side of the installation cavity and the first dichroic mirror.
[0006] Preferably, the first installation position comprises a pair of first insertion grooves arranged along the diagonal distribution. The second installation position comprises a pair of second insertion grooves arranged along the diagonal distribution. The first insertion grooves and the second insertion grooves both extend along the direction perpendicular to the opening side of the installation cavity. The opposite ends of the first dichroic mirror are respectively installed in a pair of the first insertion grooves or a pair of the second insertion grooves.
[0007] Preferably, the first mounting position comprises a first clamping groove, and the second mounting position comprises a second clamping groove, the first clamping groove and the second clamping groove are arranged perpendicularly to each other at the bottom of the mounting cavity opposite to the cover plate, the extension direction of the first clamping groove and the second clamping groove is parallel to the plane where the opening side of the mounting cavity is located, the bottom of the first dichroic mirror is clamped in the first clamping groove or the second clamping groove, and the mounting portion further comprises a gluing groove in communication with the first clamping groove and the second clamping groove respectively, and the bottom of the first dichroic mirror is bonded in the gluing groove.
[0008] Preferably, the first dichroic mirror is mounted in the first mounting position, the light emitting side of the first light source is opposite to the first side of the first dichroic mirror, the inclined surface on the fixing seat is inclined towards the first side of the first dichroic mirror, and the light emitting side of the second light source is opposite to the second side of the first dichroic mirror, and the first side and the second side of the first dichroic mirror are respectively two opposite sides of the first dichroic mirror.
[0009] Preferably, the first dichroic mirror is mounted in the second mounting position, the light emitting side of the first light source and the light emitting side of the second light source are respectively opposite to the first side of the first dichroic mirror, the inclined surface on the fixing seat is inclined towards the second side of the first dichroic mirror, and the first side and the second side of the first dichroic mirror are respectively two opposite sides of the first dichroic mirror; the light source assembly further comprises a laser module, the laser module is arranged on the cover plate, and the optical mirror assembly further comprises a first reflecting mirror, the first reflecting mirror is mounted on the inclined surface of the fixing seat, and the first reflecting mirror is located on the light emitting path of the laser module to reflect the light beam of the laser module to the first dichroic mirror.
[0010] Preferably, the first light source and the second light source are respectively mounted on two mutually perpendicular side walls of the mounting cavity, the laser module is arranged on the cover plate, and the light emitting direction of the laser module is perpendicular to the plane where the opening side of the mounting cavity is located.
[0011] Preferably, the bottom of the mounting cavity opposite to the cover plate is further provided with a fixing column, and the optical mirror assembly further comprises an eye lens and / or a diffusion sheet, the eye lens and / or the diffusion sheet are fixedly connected to the fixing column and located on the light emitting path of the laser module.
[0012] Preferably, the laser module comprises a plurality of laser lamps and a light combining mirror group, the light combining mirror group is arranged corresponding to the light emitting side of the plurality of laser lamps, and the light combining mirror group combines and guides the light beams of the plurality of laser lamps to the first reflecting mirror.
[0013] Preferably, the light machine further comprises a light valve and a projection lens arranged in the shell, the light source assembly further comprises a third light source arranged in the shell and located at the same side as the second light source, the optical lens assembly further comprises a second dichroic mirror, the second dichroic mirror is located at the side of the first dichroic mirror away from the first light source, the light emitting side of the third light source is opposite to the second dichroic mirror, the projection lens is fixed to the side of the shell away from the cover plate, the axial direction of the projection lens is parallel to the light emitting direction of the first light source, and the light valve is used for modulating and reflecting the light beams from at least the first light source and the second light source to the projection lens.
[0014] In a second aspect, the utility model discloses a kind of projection equipment, comprising the light machine of first aspect.
[0015] Compared with prior art, the utility model has the beneficial effects that: the light machine and the projection equipment disclosed by the utility model, two installation positions for installing the first dichroic mirror are arranged in the mounting cavity of the shell, a fixing seat is arranged in the mounting cavity, an inclined surface of the mounting mirror of the first dichroic mirror is arranged on the fixing seat and inclined to the opening side of the mounting cavity, so that when the first dichroic mirror is assembled in different installation positions in the shell, two light path modes can be formed, so that only one shell can be adapted to two light path installation modes, and the switching of assembly can be carried out according to actual production needs, and the production cost is reduced.
[0016] In further solutions, the utility model has the following beneficial effects:
[0017] (1) In one of the light path modes, a laser module is arranged on the cover plate, which is combined with the light source on the shell, so that the output brightness of the light machine is improved, and the overall size can still be kept small. Further, each light source is arranged in the XYZ direction of the shell, so that the limited space is fully utilized to achieve greater brightness output.
[0018] (2) The mounting cavity further comprises a fixing column, and the fixing column is fixedly connected with the fly eye lens and / or the diffusion sheet, so that the coherence of laser can be eliminated and the speckle phenomenon in the projection picture can be reduced.
[0019] (3) The projection lens is located on the side of the shell away from the cover plate, so that the overall light machine has a U-shaped folding structure, so that the structure of the light machine is more compact and conducive to miniaturization. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a structural schematic view of the light machine disclosed by the preferred embodiment of the utility model;
[0021] Figure 2 is Figure 1 a partial structure explosion schematic view of the shell of the light machine in the utility model
[0022] Figure 3 is Figure 1 The structure schematic diagram of the light machine in the first light path mode.
[0023] Figure 4 is Figure 1 The top view of the internal structure of the shell of the light machine;
[0024] Figure 5 is Figure 1 The structure schematic diagram of the light machine;
[0025] Figure 6 is Figure 5 The enlarged schematic diagram of A in the light machine;
[0026] Figure 7 is Figure 1 The structure schematic diagram of the light machine in the second light path mode;
[0027] Figure 8 is Figure 1 The structure schematic diagram of the light machine in the second light path mode from another perspective.
[0028] BRIEF DESCRIPTION OF THE DRAWINGS
[0029] 10, shell; 11, mounting cavity; 111, first mounting position; 1111, first slot; 1112, first clamping slot; 1113, adhesive groove; 112, second mounting position; 1121, second slot; 1122, second clamping slot; 113, fixing seat; 1131, inclined surface; 114, fixing column; 12, cover plate side;
[0030] 20, cover plate;
[0031] 30, light source assembly; 31, first light source; 32, second light source; 33, third light source; 34, laser module; 341, laser lamp; 342, light combiner;
[0032] 40, optical mirror assembly; 41, first dichroic mirror; 42, second dichroic mirror; 43, first reflecting mirror; 44, fly-eye lens; 45, diffusion sheet;
[0033] 50, light valve; 60, projection lens. DETAILED DESCRIPTION
[0034] The embodiments of the present application will be described in detail below. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present application and its applications.
[0035] It is to be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be for fixing or for electrical / signal communication.
[0036] It is to be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are merely used for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0037] In addition, the terms "first", "second", "third", etc. are used only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0038] As shown in Figure 1 and Figure 2 The preferred embodiment of the present application discloses an optical machine, comprising a shell 10, a cover plate 20, a light source assembly 30 and an optical mirror assembly 40. An installation cavity 11 is formed in the shell 10 for installing various optical elements to modulate the light path. The opening side of the Z-axis direction of the shell 10 is the cover plate side 12, and the cover plate 20 is detachably covered on the opening side of the installation cavity 11 to close the installation cavity 11, so that the inside of the optical machine is in a closed state when working; in combination Figure 3 The light source assembly 30 comprises a first light source 31 and a second light source 32, and the first light source 31 and the second light source 32 are arranged on the shell 10. The light emitting directions of the first light source 31 and the second light source 32 are perpendicular to each other and respectively parallel to the plane where the opening side of the installation cavity 11 is located. The optical mirror assembly 40 comprises a first dichroic mirror 41, and the installation cavity 11 is provided with a mounting portion for mounting the first dichroic mirror 41. The mounting portion is located on the light emitting side of the first light source 31 and the second light source 32, in combination Figure 4 to Figure 6The mounting part is provided with a first mounting position 111 and a second mounting position 112, the first dichroic mirror 41 is mounted on the first mounting position 111 or the second mounting position 112, and the first dichroic mirror 41 mounted on the first mounting position 111 is perpendicular to the first dichroic mirror 41 mounted on the second mounting position 112; the mounting cavity 11 is provided with a fixing seat 113, the fixing seat 113 is located on the side of the first dichroic mirror 41 away from the second light source 32, the fixing seat 113 is provided with an inclined surface 1131 for mounting a reflecting mirror, and the inclined surface 1131 is inclined towards the opening side of the mounting cavity 11 and the first dichroic mirror 41.
[0039] In the embodiment, the first mounting position 111 comprises a first clamping groove 1112 and a pair of first slots 1111 arranged diagonally, and the second mounting position 112 comprises a second clamping groove 1122 and a pair of second slots 1121 arranged diagonally. The first slots 1111 and the second slots 1121 both extend along the direction perpendicular to the opening side of the mounting cavity 11. The opposite ends of the first dichroic mirror 41 are respectively mounted in the pair of first slots 1111 or the pair of second slots 1121. The first clamping groove 1112 and the second clamping groove 1122 are arranged perpendicularly to each other at the bottom of the mounting cavity 11 opposite to the cover plate 20. The extension direction of the first clamping groove 1112 and the second clamping groove 1122 is parallel to the plane where the opening side of the mounting cavity 11 is located. The bottom of the first dichroic mirror 41 is clamped in the first clamping groove 1112 or the second clamping groove 1122. The mounting portion further comprises an adhesive groove 1113 which is in communication with the first clamping groove 1112 and the second clamping groove 1122 respectively. The bottom of the first dichroic mirror 41 is adhered in the adhesive groove 1113. When the first dichroic mirror 41 needs to be mounted in the first mounting position 111, the first dichroic mirror 41 is inserted from the upper end of the pair of first slots 1111 until the bottom is inserted into the first clamping groove 1112, and then is fixed by gluing in the adhesive groove 1113. When the first dichroic mirror 41 needs to be mounted in the second mounting position 112, the first dichroic mirror 41 is inserted from the upper end of the pair of second slots 1121 until the bottom is inserted into the second clamping groove 1122, and then is fixed by gluing in the adhesive groove 1113. In other embodiments, the first mounting position 111 is the first clamping groove 1112 or the pair of first slots 1111 arranged diagonally, and the second mounting position 112 is the second clamping groove 1122 or the pair of second slots 1121 arranged diagonally. At this time, when the first dichroic mirror 41 needs to be mounted in the first mounting position 111, the opposite ends of the first dichroic mirror 41 are respectively mounted in the pair of first slots 1111 or the bottom of the first dichroic mirror 41 is clamped in the first clamping groove 1112. When the first dichroic mirror 41 needs to be mounted in the second mounting position 112, the opposite ends of the first dichroic mirror 41 are respectively mounted in the pair of second slots 1121 or the bottom of the first dichroic mirror 41 is clamped in the second clamping groove 1122. After the first dichroic mirror 41 is mounted in the slot or the clamping groove, it is fixed by gluing in the adhesive groove 1113.
[0040] Reference Figure 3 When the first dichroic mirror 41 is mounted in the first mounting position 111, the light emitting side of the first light source 31 is opposite to the first side of the first dichroic mirror 41, and the inclined surface 1131 on the fixing seat 113 is inclined towards the first side of the first dichroic mirror 41. The light emitting side of the second light source 32 is opposite to the second side of the first dichroic mirror 41. The first side and the second side of the first dichroic mirror 41 are respectively the two opposite sides of the first dichroic mirror 41.
[0041] Reference Figure 7 When the first dichroic mirror 41 is installed in the second installation position 112, the light emitting side of the first light source 31 and the light emitting side of the second light source 32 respectively face the first side of the first dichroic mirror 41, the inclined surface 1131 on the fixing seat 113 is inclined towards the second side of the first dichroic mirror 41, and the first side and the second side of the first dichroic mirror 41 are respectively two opposite sides of the first dichroic mirror 41; the light source assembly 30 further comprises a laser module 34, the laser module 34 is arranged on the cover plate 20, and the optical mirror assembly 40 further comprises a first reflecting mirror 43, the first reflecting mirror 43 is installed on the inclined surface 1131 of the fixing seat 113, and the first reflecting mirror 43 is located on the light emitting path of the laser module 34 to reflect the light beam of the laser module 34 to the first dichroic mirror 41.
[0042] Further, the first light source 31 and the second light source 32 are respectively installed on two mutually perpendicular side walls of the installation cavity 11, the laser module 34 is arranged on the cover plate 20 and the light emitting direction of the laser module 34 is perpendicular to the plane where the opening side of the installation cavity 11 is located. The bottom of the installation cavity 11 opposite to the cover plate 20 is further provided with a fixing column 114, and the optical mirror assembly 40 further comprises an eye lens 44 and / or a diffusion sheet 45, the eye lens 44 and / or the diffusion sheet 45 are fixedly connected to the fixing column 114 and located on the light emitting path of the laser module 34.
[0043] As shown in Figure 8 The laser module 34 comprises a plurality of laser lamps 341 and a light combining mirror group 342, the light combining mirror group 342 is arranged on the light emitting side of the plurality of laser lamps 341, and the light combining mirror group 342 combines and guides the light beams of the plurality of laser lamps 341 into the first reflecting mirror 43. The optical machine further comprises a light valve 50 and a projection lens 60 arranged on the shell 10, the light source assembly 30 comprises a third light source 33 arranged on the same side of the shell as the second light source 32, and the optical mirror assembly 40 comprises a second dichroic mirror 42, the second dichroic mirror 42 is located on the side of the first dichroic mirror 41 away from the first light source 31, the light emitting side of the third light source 33 faces the second dichroic mirror 42, the projection lens 60 is fixed to the side of the shell 10 away from the cover plate 20, the axial direction of the projection lens 60 is parallel to the light emitting direction of the first light source 31, and the light valve 50 is used for modulating and reflecting the light beams from at least the first light source 31 and the second light source 32 to the projection lens 60.
[0044] The utility model discloses the light machine of preferred embodiment discloses the installation cavity 11 in the shell 10 is equipped with two kinds of mounting structure for the first dichroic mirror 41, when the first dichroic mirror 41 is installed in the first installation position 111, only use first light source 31, second light source 32 and third light source 33 in the light machine light path, form first kind of light path form when this time, when the first dichroic mirror 41 is installed in the second installation position 112, cooperate the laser module 34 fixed on the cover plate 10 and install the first reflector 43 on the slope 1131 of fixed base 113, can realize the light of first light source 31, second light source 32, third light source 33 and laser module 34, to form the second kind of light path form with mixed light. Wherein, in the same shell 10 through reserving two installation positions, can realize two kinds of light path form through a shell 10, according to different light source mode, only need to replace the first dichroic mirror 41 and install the first dichroic mirror 41 in different installation position, convenient assembly, reduce cost.
[0045] Reference is also made to Figure 3 In the first kind of light path form, it is directly fixed with the cover plate 20 on the cover plate side 12 of the shell 10, and the cover plate 20 has no light source, and the light machine has only the light source located on the XY plane side at this time, and the light source located on the XY plane is preferably an LED light source. In a specific scheme, a full LED light source mode is adopted, the first light source 31, the second light source 32 and the third light source 33 are three-color LED light sources respectively, the first light source 31 is a green light source, the second light source 32 is a blue light source, and the third light source 33 is a red light source. The first dichroic mirror 41 reflects the blue light source and transmits the green light source, guides the blue light and the green light to the second dichroic mirror 42 to combine with the red light source, and the second dichroic mirror 42 can transmit the blue light and the green light and reflect the red light. The light beam after combination further reaches the light valve 50 to be modulated into an image light beam carrying image information, and then is enlarged and projected out through the projection lens 60.
[0046] Reference is also made to Figure 7 And Figure 8 In the second kind of light path form, the laser module 34 is fixed on the cover plate 20, and then is fixed on the cover plate side 12 of the shell 10 together. In combination with Figure 6The fixing seat 113 and the fixing column 114 are located on one side of the first dichroic mirror 41 in the XY plane, and the reflection direction of the first reflecting mirror 43 is towards the first dichroic mirror 41. When producing the second light path form of the light machine, the first reflecting mirror 43 needs to be installed on the inclined surface 1131 of the fixing seat 113, the fly-eye lens 44 and / or the diffusion sheet 45 are installed on the fixing column 1124, and the light beam of the laser module 34 can pass through the fly-eye lens 44 and / or the diffusion sheet 45 and reach the first reflecting mirror 43, and then can be reflected to the first dichroic mirror 41. In a specific scheme, the mixed light source mode of LED+laser is adopted, the first light source 31, the second light source 32 and the third light source 33 are three-color LED light sources respectively, the first light source 31 is a green light source, the second light source 32 is a blue light source, and the third light source 33 is a red light source. The red, green and blue LED light sources are arranged on one side of the shell 10 in the X and Y directions, the laser module 34 is arranged on one side of the shell 10 in the Z direction, and the projection lens 60 is located on the side of the shell 10 away from the laser module 34. The whole light machine is in a U-shaped bending form, fully utilizes the space volume in the XYZ direction, and ensures that the light machine is compact and small in size under the condition of having high-brightness light sources.
[0047] The shell 10 is provided with a detachable cover plate 20 on one side in the Z direction, and a mounting cavity 111 in the shell 10 is used for mounting various optical devices (light source converging lens, dichroic mirror, relay lens, coherence-eliminating element, etc.), and the cover plate 20 is finally fixed on the shell 10 to close the mounting cavity 11. The laser module 34 is fixed on the cover plate 20; the light emitting direction of the laser module 34 is perpendicular to the light emitting direction of each LED light source (the first light source 31, the second light source 32 and the third light source 33). Further, the laser module 34 can include a plurality of laser lamps 341 and a light combining lens group 42, the light combining lens group 342 is arranged on the light emitting side of each laser lamp 341, and a fly-eye lens 44 and a first reflecting mirror 43 are further arranged behind the light combining lens group 342. The first reflecting mirror 43 reflects the laser light beam propagating along the Z direction from the cover plate side 12 to the first dichroic mirror 41, and then the laser beam is reflected by the first dichroic mirror 41 in the direction parallel to the Y axis towards the second dichroic mirror 42 and combined with the first light source 31, and then passes through the second dichroic mirror 42 to combine with the third light source 3, and finally reaches the light valve 50 for modulation and is projected out by the projection lens 60.
[0048] In the second light path form, further, the green light source adopted by the first light source 31 is composed of a first blue light source and a fluorescent layer, the fluorescent layer is located between the first blue light source and the first dichroic mirror 41, the fluorescent layer is used to excite green light, the second light source 32 includes a second blue light source, the light beam emitted by the second light source 32 is reflected to the fluorescent layer through the first dichroic mirror 41 to excite green light, so as to increase the intensity of the green light, and the blue light in the final light path can be supplemented by the blue light source in the laser module 34. Wherein, green light has a great influence on visual sense, through the above improvement, the enhancement of green light can be realized, and the color of the projected picture is further more bright.
[0049] The utility model discloses preferred embodiment further discloses a kind of projection equipment, including the optical machine of above-mentioned preferred embodiment.
[0050] The projection equipment and optical machine disclosed by the preferred embodiment of the utility model set the dichroic mirror assembly structure of two light path forms in the shell of optical machine, so that only one shell can adapt two light path installation modes, switch according to actual production demand assembly, reduce production cost.
[0051] The background section of the utility model can contain background information about the problems or environment of the utility model, rather than the prior art described by others. Therefore, the content contained in the background section is not the acknowledgement of the prior art by the applicant.
[0052] The above content is further detailed description of the utility model in combination with specific / preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled person in the art to which the utility model belongs, without departing from the concept of the utility model, some alternatives or modifications can be made to the described embodiments, and these alternatives or modifications shall be regarded as belonging to the protection scope of the utility model. In the description of the specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction. Although the embodiments of the utility model and its advantages have been described in detail, it should be understood that various changes, replacements and modifications can be made in this paper without departing from the scope defined by the attached claims.
Claims
1. An optical engine, characterized by, The application relates to a light source assembly and an optical mirror assembly, and belongs to the technical field of light source assemblies and optical mirror assemblies. The light source assembly comprises a first light source and a second light source, the first light source and the second light source are arranged on the shell, the light emitting directions of the first light source and the second light source are perpendicular to each other and are parallel to the plane where the opening side of the mounting cavity is located. The optical mirror assembly comprises a first dichroic mirror, the mounting cavity is provided with a mounting portion for mounting the first dichroic mirror, the mounting portion is located on the light emitting side of the first light source and the second light source, the mounting portion is provided with a first mounting position and a second mounting position, the first dichroic mirror is mounted on the first mounting position or the second mounting position, and the first dichroic mirror mounted on the first mounting position is perpendicular to the first dichroic mirror mounted on the second mounting position. The mounting cavity is provided with a fixing seat, the fixing seat is located on the side of the first dichroic mirror away from the second light source, the fixing seat is provided with an inclined surface for mounting a reflecting mirror, and the inclined surface is inclined towards the opening side of the mounting cavity and the first dichroic mirror.
2. The optical engine of claim 1, wherein The first mounting position comprises a pair of first insertion grooves arranged in a diagonal distribution, the second mounting position comprises a pair of second insertion grooves arranged in a diagonal distribution, the first insertion grooves and the second insertion grooves extend in a direction perpendicular to the opening side of the mounting cavity, and the opposite ends of the first dichroic mirror are respectively mounted in a pair of the first insertion grooves or a pair of the second insertion grooves.
3. The optical engine of claim 1, wherein The first mounting position comprises a first clamping groove, the second mounting position comprises a second clamping groove, the first clamping groove and the second clamping groove are arranged in the bottom of the mounting cavity opposite to the cover plate, the extension directions of the first clamping groove and the second clamping groove are parallel to the plane where the opening side of the mounting cavity is located, the bottom of the first dichroic mirror is clamped in the first clamping groove or the second clamping groove, and the mounting portion further comprises a gluing groove, the gluing groove is in communication with the first clamping groove and the second clamping groove, and the bottom of the first dichroic mirror is bonded in the gluing groove.
4. The optical engine of claim 1, wherein, The first dichroic mirror is mounted on the first mounting position, the light emitting side of the first light source is opposite to the first side of the first dichroic mirror, the inclined surface on the fixing seat is inclined towards the first side of the first dichroic mirror, the light emitting side of the second light source is opposite to the second side of the first dichroic mirror, and the first side and the second side of the first dichroic mirror are two opposite sides of the first dichroic mirror.
5. The optical engine of claim 1, wherein, The first dichroic mirror is mounted on the second mounting position, the light emitting side of the first light source and the light emitting side of the second light source are opposite to the first side of the first dichroic mirror, the inclined surface on the fixing seat is inclined towards the second side of the first dichroic mirror, and the first side and the second side of the first dichroic mirror are two opposite sides of the first dichroic mirror. The light source assembly further comprises a laser module arranged on the cover plate, and the optical mirror assembly further comprises a first reflecting mirror mounted on the inclined surface of the fixing seat, the first reflecting mirror being located on a light path of the laser module to reflect a light beam of the laser module to the first dichroic mirror.
6. The optical engine of claim 5, wherein, The first light source and the second light source are respectively mounted on two mutually perpendicular side walls of the mounting cavity, the laser module is arranged on the cover plate and a light emitting direction of the laser module is perpendicular to a plane on which an opening side of the mounting cavity is located.
7. The optical engine of claim 5, wherein, The bottom of the mounting cavity opposite to the cover plate is further provided with a fixing column, and the optical mirror assembly further comprises an ommatidium lens and / or a diffusion sheet, the ommatidium lens and / or the diffusion sheet being fixedly connected to the fixing column and located on a light path of the laser module.
8. The optical engine of claim 5, wherein, The laser module comprises a plurality of laser lamps and a light combiner, the light combiner being correspondingly arranged on a light emitting side of the plurality of laser lamps, the light combiner combining light beams of the plurality of laser lamps and guiding the light beams to the first reflecting mirror.
9. The optical engine of claim 1, wherein, The shell further comprises a light valve and a projection lens, the light source assembly further comprises a third light source arranged on the shell and located on the same side as the second light source, the optical mirror assembly further comprises a second dichroic mirror located on a side of the first dichroic mirror away from the first light source, a light emitting side of the third light source facing the second dichroic mirror, the projection lens being fixed to a side of the shell away from the cover plate, an axial direction of the projection lens being parallel to a light emitting direction of the first light source, and the light valve being used for modulating and reflecting light beams from at least the first light source and the second light source to the projection lens.
10. A projection apparatus, characterized by, The optical machine comprises the light machine according to any one of claims 1 to 9.