A mirror assembly and a projection device
Patent Information
- Application Number
- CN202522524468.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0027] Compared with the prior art, the reflector assembly and projection device provided by the embodiments of this utility model include a housing, a reflector bracket, a reflector, and a first adjusting member and a second adjusting member. The housing has an arc-shaped through groove and a spherical groove. The first surface of the reflector bracket has a spherical protrusion that abuts against the spherical groove. The second surface of the reflector bracket is fixedly mounted on the reflector, and the second surface is opposite to the first surface. The first adjusting member and the second adjusting member respectively pass through the arc-shaped through groove and are threadedly coupled to the reflector bracket to adjustably fix the reflector bracket to the housing, for adjusting at least one of the roll angle and pitch angle of the reflector.
Smart Images
Figure CN224803286U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of projector technology, and in particular to a reflector assembly and a projection device. Background Technology
[0002] In projection devices, field mirrors (FM) are used to reflect the light emitted by the light source, facilitating the transmission of the light along a predetermined optical path. Different projection device models have different predetermined optical paths. To ensure that the transmission path of the light reflected by the field mirror matches this predetermined optical path, the mounting bracket used to adjust the reflection angle of the field mirror must be designed accordingly to meet the adjustment requirements of the field mirror.
[0003] In existing technologies, the mold for manufacturing the mounting bracket needs to be adjusted to adapt to the design, increasing the cost of mold repair. Therefore, how to reduce manufacturing costs while ensuring that the adjustment angle of the reflector can be adapted to the preset optical path is a problem that urgently needs to be solved in this field. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to provide a reflector assembly and projection device that address the shortcomings of the prior art, so that the adjustment angle of the reflector can be adapted to different preset light paths.
[0005] An embodiment of this utility model provides a reflector assembly, comprising:
[0006] The housing has an arc-shaped through groove and a spherical groove;
[0007] A reflector bracket, the first surface of which has a spherical protrusion that abuts against a spherical groove;
[0008] A reflector, fixedly mounted on a second surface of the reflector bracket, the second surface being opposite to the first surface; and
[0009] A first adjusting member and a second adjusting member, which respectively pass through the arc-shaped through groove and are threadedly coupled to the reflector bracket, so as to adjustably fix the reflector bracket to the housing and adjust at least one of the roll angle and pitch angle of the reflector.
[0010] Preferably, the first surface of the reflector bracket has an adjustment boss, the projection shape of the adjustment boss onto the housing corresponds to the arc-shaped through groove and is arc-shaped, and the adjustment boss is disposed in the arc-shaped through groove;
[0011] The adjusting boss has a first hole and a second hole respectively at the adjustment positions corresponding to the roll angle and the pitch angle. The first adjusting member and the second adjusting member are respectively threaded into the first hole and the second hole.
[0012] More preferably, the first surface of the reflector bracket also has a limiting boss, the projection shape of which corresponds to the adjustment boss and is arc-shaped, and the limiting boss and the adjustment boss are symmetrically located on opposite sides of the spherical protrusion.
[0013] Alternatively, the first surface of the reflector bracket may also have a limiting post, the limiting post, the first hole and the second hole are not collinear, and the spherical protrusion is located in the area formed by the three.
[0014] Preferably, the first surface of the reflector bracket has multiple pairs of adjustment posts, and the arrangement trajectory of the multiple pairs of adjustment posts corresponds to the arc-shaped through groove and is arc-shaped.
[0015] The first adjusting member and the second adjusting member are respectively threadedly coupled to one pair of adjusting columns of the plurality of adjusting columns, wherein the pair of adjusting columns correspond to the adjustment positions of the roll angle and the pitch angle, respectively.
[0016] More preferably, the reflector has an adjacent first side and a second side, and one pair of the multiple pairs of adjustment posts and the two lines connecting the spherical protrusion are orthogonal to the first side and the second side, respectively.
[0017] More preferably, the first surface of the reflector bracket also has multiple pairs of limiting posts, which are symmetrically located on opposite sides of the spherical protrusion with respect to the multiple pairs of adjusting posts.
[0018] Alternatively, the first surface on the reflector bracket may also have a limiting post that is not collinear with any pair of adjusting posts, and the spherical protrusion is located within the area formed by the three posts.
[0019] Preferably, the first adjusting member and the second adjusting member are spring screws, and the opposite ends of the springs of the spring screws elastically abut against the reflector bracket and the housing, respectively.
[0020] Preferably, the center of the spherical groove has a through hole, the center of the spherical protrusion has a threaded hole, the third adjusting member is a spring screw, the screw of the spring screw passes through the through hole and is locked in the threaded hole, and the opposite ends of the spring of the spring screw elastically abut against the housing and the nut of the screw respectively;
[0021] Alternatively, the spherical protrusion has a spherical head, and the spherical groove has a corresponding receiving cavity, in which the spherical head is loosely accommodated.
[0022] Preferably, the arc-shaped through groove includes a first through groove and a second through groove that are not interconnected, and the first adjusting member and the second adjusting member pass through the first through groove and the second through groove respectively, and are threadedly coupled to the reflector bracket;
[0023] The first through slot and the second through slot correspond to the setting range of the adjustment positions of the roll angle and the pitch angle, respectively.
[0024] Another embodiment of this utility model provides a projection device, comprising:
[0025] Light source; and
[0026] The aforementioned reflector assembly has a reflector positioned relative to the light source to reflect the light emitted by the light source, so that the light is transmitted along the preset optical path of the projection device.
[0027] Compared with the prior art, the reflector assembly and projection device provided by the embodiments of this utility model include a housing, a reflector bracket, a reflector, and a first adjusting member and a second adjusting member. The housing has an arc-shaped through groove and a spherical groove. The first surface of the reflector bracket has a spherical protrusion that abuts against the spherical groove. The second surface of the reflector bracket is fixedly mounted on the reflector, and the second surface is opposite to the first surface. The first adjusting member and the second adjusting member respectively pass through the arc-shaped through groove and are threadedly coupled to the reflector bracket to adjustably fix the reflector bracket to the housing, for adjusting at least one of the roll angle and pitch angle of the reflector. Attached Figure Description
[0028] Figure 1 A schematic diagram showing the positional relationship between the preset optical path of the projection device and the reflector;
[0029] Figure 2 This is a schematic diagram showing the relative relationship between the adjustment angle of the reflector and the preset optical path;
[0030] Figure 3A and Figure 3B Exploded view diagrams of a mirror assembly provided in an embodiment of this utility model from different perspectives;
[0031] Figure 4 A three-dimensional structural schematic diagram of a reflector assembly provided in one embodiment of the present utility model;
[0032] Figure 5 for Figure 4 A partial sectional view at point AA in the middle;
[0033] Figure 6 A three-dimensional structural diagram of the reflector bracket of the reflector assembly provided in another embodiment of the present utility model. Detailed Implementation
[0034] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.
[0035] Certain terms are used in the specification and claims to refer to specific elements. It will be understood by those skilled in the art that manufacturers may use different names to refer to the same element. This specification and claims do not distinguish elements by differences in name, but rather by differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to".
[0036] The following embodiments and accompanying drawings illustrate the implementation of this utility model. Throughout this specification, the same element symbols denote the same elements. It should be understood that when an element is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or there may be intermediate elements present. Conversely, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intermediate elements present. As used herein, "connection" may refer to a physical and / or electrical connection. Furthermore, "electrical connection" or "electrical coupling" indicates that intermediate elements may be present.
[0037] The directional terms used herein are for detailed description and not intended to limit the invention. For example, "upper" and "lower" are merely used to describe the relative positions of elements in the drawings, depending on the specific orientation of the drawings. Furthermore, ordinal numbers such as "first," "second," and "third" used in the specification are for modifying elements and do not inherently imply any prior ordinal number for that element, nor do they represent the order of one element with another, or the order of manufacturing processes. The use of these ordinal numbers is solely to clearly distinguish one element with a given name from another element with the same name.
[0038] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram showing the positional relationship between the preset optical path of the projection device and the reflector 21. Figure 2 This is a schematic diagram showing the relative relationship between the adjustment angle of reflector 21 and the preset optical path. Figure 3A and Figure 3B This is a schematic diagram of the exploded structure of a reflector assembly provided in one embodiment of the present invention from different viewing angles. Figure 4 This is a three-dimensional structural diagram of a reflector assembly provided in one embodiment of the present invention. Figure 1 and Figure 2As shown, the projection device includes a light source 10 and a reflector assembly. The light source 10 emits a first ray L1, and the reflector 21 (Field Mirror, FM) in the reflector assembly reflects the first ray L1 emitted by the light source 10 to form a second ray L2. The second ray L2 travels along a preset optical path of the projection device. In a preferred embodiment, the shape of the reflector 21 corresponds to the shape of the projection spot L1S of the first ray L1 on the reflector 21. That is, the reflector 21 has adjacent first sides 211 and second sides 212. After the reflector 21 is fixedly installed relative to the light source 10, the two adjacent sides of the projection spot L1S of the first ray L1 on the reflector 21 are parallel or approximately parallel to the first side 211 and the second side 212, respectively, to ensure the best reflection effect. In this embodiment, the shape of the projection spot L1S of the first ray L1 on the reflector 21 corresponds to the shape of the reflector 21 and is rectangular, but this is not a limitation.
[0039] To facilitate understanding of the matching of the light transmission path after reflection by the mirror with the preset optical path, this embodiment uses a compound eye lens 30 (Lens Array, LA) in the preset optical path as an example, which is used to receive and homogenize the second light ray L2. Figure 1 and Figure 2 As shown, the compound eye lens 30 is positioned relative to the reflecting mirror 21. The compound eye lens 30 has multiple sub-lenses 31 arranged in an array. Each sub-lens 31 has adjacent third sides 311 and fourth sides 312. It is understood that the shape of the projection spot L2S of the second ray L2 onto the compound eye lens 30 is usually the same as or similar to the shape of the projection spot L1S of the first ray L1 onto the reflecting mirror 21. However, in practical applications, the projection spot L2S of the second ray L2 and the projection spot L1S of the first ray L1 are not necessarily aligned. This depends on the position of the compound eye lens 30 relative to the reflecting mirror 21 and the reflection angle of the reflecting mirror 21 when reflecting the first ray L1. Figure 2 As shown, the adjacent sides of the projected spot L2S of the second ray L2 and the projected spot L1S of the first ray L1 are not parallel, that is, the projected spots L1S / L2S are misaligned. Figure 2Two arrows are also shown to indicate a pair of diagonal lines corresponding to the projected light spot L1S of the first ray L1 and the projected light spot L2S of the second ray L2, to facilitate understanding of the angular change of the projected light spot L2S of the second ray L2 relative to the projected light spot L1S of the first ray L1 after reflection by the reflector 21. In other words, the position of the compound eye lens 30 relative to the reflector 21 is the "cause," and the corresponding adjustment of the reflection angle of the reflector 21 is the "effect." The reflection angle of the reflector 21 must satisfy the following: the shape of the projected light spot L2S of the second ray L2 on the compound eye lens 30 is aligned with the shape of each sub-lens 31. In other words, the two adjacent sides of the shape of the projected light spot L2S of the second ray L2 must be parallel to the third side 311 and the fourth side 312 of the sub-lens 31, respectively. In this embodiment, the sub-lens 31 is rectangular, meaning that the compound eye lens 30 has a rectangular lens structure, but this is not a limitation. It should be noted that the transmission path of the light after reflection by the mirror can also be limited by other optical elements in the preset optical path, and this utility model is not limited thereto.
[0040] Based on the above, such as Figure 3A , Figure 3B and Figure 4 As shown, the reflector assembly includes a housing 23, a reflector bracket 22, a reflector 21, a first adjusting member Sa, and a second adjusting member Sb. The housing 23 is positioned relative to the light source 10 and has an arc-shaped through-groove 231 and a spherical groove 232. The first surface 22S1 of the reflector bracket 22 has a spherical protrusion 221 that abuts against the spherical groove 232. The reflector 21 is fixedly mounted on the second surface 22S2 of the reflector bracket 22, which is opposite to the first surface 22S1. In this embodiment, as shown... Figure 3A As shown, after the reflector 21 is positioned by the frame, it is then fixed to the reflector bracket 22 by clips on the frame. In other embodiments, the reflector 21 can also be fixed by adhesive or other methods; however, practical applications are not limited to these. The first adjusting member Sa and the second adjusting member Sb pass through the arc-shaped through groove 231 and are threadedly coupled to the reflector bracket 22 to adjustably fix the reflector bracket 22 to the housing 23, for adjusting at least one of the roll angle and pitch angle of the reflector 21. Please refer to [further details omitted]. Figure 5 , Figure 5 for Figure 4 A partial sectional view at point AA, showing the thread coupling depth of the first adjusting member Sa (along...). Figure 5When the two opposing arrow directions are adjusted, the reflector 21 rotates around the first adjustment axis R1 to adjust the roll angle (or pitch angle) of the reflector 21 accordingly. The second adjustment member Sb is similar (not shown in the figure). When the thread coupling depth of the second adjustment member Sb is adjusted, the reflector 21 rotates around the second adjustment axis R2 to adjust the pitch angle (or roll angle) of the reflector 21 accordingly. Taking the shape of the projection spot L1S and the sub-lens 31 in this embodiment as an example, the reflector 21 is adjusted to an appropriate angle to reflect the first light ray L1, which is roughly rectangular in shape, to the compound eye lens 30, so that the reflected light can correspond to the rectangular lens structure on the compound eye lens 30 (long side corresponds to long side, short side corresponds to short side) in order to maximize the utilization of light. Taking the compound eye lens 30 mentioned earlier as an example, the first adjustment axis R1 and the second adjustment axis R2 are orthogonal to the third side 311 and the fourth side 312 of the compound eye lens 30, respectively. That is, in the reflector bracket 22, the line connecting the coupling position of the first adjustment member Sa and the spherical protrusion 221 should be parallel to the third side 311 of the sub-lens 31, and the line connecting the coupling position of the second adjustment member Sb and the spherical protrusion 221 should be parallel to the fourth side 312 of the sub-lens 31. Thus, after the first adjustment member Sa and the second adjustment member Sb pass through the arc-shaped through groove 231, they can be threadedly coupled to any two positions on the reflector bracket 22, so that the adjustable range of the reflection angle of the reflector 21 matches the different relative positions of the compound eye lens 30. In other words, this reflector assembly can be applied to the preset optical path in any type of projection device, has high versatility, eliminates the need to adjust the molds of the reflector bracket 22 and the housing 23, and helps reduce manufacturing costs.
[0041] In a preferred embodiment, the spherical groove 232 corresponds to the center of the arc-shaped through groove 231, and the center of the reflector 21 corresponds to the center of the spherical protrusion 221. That is, the first adjustment shaft R1 and the second adjustment shaft R2 pass through the center of the reflector 21, so that the reflector 21 can be more easily adjusted to a suitable reflection angle.
[0042] In a preferred embodiment, such as Figure 3A and Figure 3BAs shown, the first surface 22S1 of the reflector bracket 22 has an adjustment boss 222. The projection shape of the adjustment boss 222 onto the housing 23 corresponds to the arc-shaped through groove 231 and is arc-shaped, and the adjustment boss 222 is disposed in the arc-shaped through groove 231. When installing the reflector bracket 22 and the housing 23, the technician can determine the adjustment positions of the roll angle and the pitch angle based on the installation position of the compound eye lens 30 relative to the reflector 21 in the projection device, and make a first hole and a second hole at corresponding locations on the adjustment boss 222. The first adjustment member Sa and the second adjustment member Sb are threadedly coupled into the first hole and the second hole, respectively. By partially limiting the adjustment post 222 through the arc-shaped through groove 231, the threaded coupling depth of the first adjustment member Sa and / or the second adjustment member Sb can be adjusted, allowing the reflector bracket 22 to move more smoothly relative to the housing 23, reducing the actuation error when the reflector 21 is flipped. Preferably, the inner wall of the arc-shaped through groove 231 is also provided with a rib, which has a first rib surface and a second rib surface. The first rib surface faces the adjusting boss 222 and can be used to abut against the adjusting boss 222 to limit the rotation range of the reflector bracket 22 relative to the housing 23. The second rib surface faces the first adjusting member Sa and the second adjusting member Sb. For example, when the first adjusting member Sa and the second adjusting member Sb are screws, the second rib surface can be used to abut against the nut of the screw, thereby limiting the thread coupling depth of the first adjusting member Sa and the second adjusting member Sb to avoid over-adjustment. However, the actual application is not limited to this.
[0043] Better, such as Figure 3B As shown, the first surface 22S1 of the reflector bracket 22 also has a limiting boss 223. The projection shape of the limiting boss 223 onto the housing 23 corresponds to the adjusting post 222 and is arc-shaped. The limiting boss 223 and the adjusting boss 222 are symmetrically located on opposite sides of the spherical protrusion 221. In this way, by the ribs provided on the inner wall of the arc-shaped through groove 231 abutting against the adjusting boss 222, and by the surface of the housing 23 opposite to the arc-shaped through groove 231 abutting against the limiting boss 223, the rotation angle range of the reflector 21 on opposite sides of the first adjusting axis R1 or the second adjusting axis R2 can be limited, avoiding damage to the parts due to over-adjustment. In some other embodiments, the first surface 22S1 of the reflector bracket 22 may also have a limiting post (not shown in the figure). The limiting post, the first hole, and the second hole are not collinear, and the spherical protrusion 221 is located in the area formed by the three. That is, the limiting post, the first hole and the second hole form a triangular shape to limit the rotation angle range of the reflector 21 on the opposite sides of the first adjustment axis R1 or the second adjustment axis R2, but the actual application is not limited to this.
[0044] In a preferred embodiment, such as Figure 5As shown, the first adjusting member Sa and the second adjusting member Sb are spring screws. The opposite ends of the springs of the spring screws Sa / Sb elastically abut against the reflector bracket 22 and the housing 23 (the ribs on the inner wall of the arc-shaped through groove 231, but not limited thereto). During the locking process of the first adjusting member Sa or the second adjusting member Sb, the corresponding spring is compressed, generating elastic potential energy and providing a buffering force; during the unlocking process of the first adjusting member Sa or the second adjusting member Sb, the corresponding spring returns to its original position and provides an elastic force to push the nearby reflector bracket 22 and housing 23 away from each other.
[0045] In a preferred embodiment, such as Figure 5 As shown, the spherical groove 232 has a through hole at its center, and the spherical protrusion 221 has a threaded hole at its center. The third adjusting member Sc is a spring screw. The screw of the spring screw Sc passes through the through hole of the spherical groove 232 and is locked to the spherical protrusion 221 to achieve a loose fit between the spherical protrusion 221 and the spherical groove 232. The opposite ends of the spring of the spring screw Sc elastically abut against the housing 23 and the nut portion of the screw of the spring screw Sc, respectively, to provide a buffering force for the movement of the reflector bracket 22 relative to the housing 23. In some embodiments, the spherical protrusion 221 has a spherical head (not shown in the figure), and the spherical groove 232 correspondingly has a receiving cavity (not shown in the figure). The spherical head is loosely accommodated in the receiving cavity; however, practical applications are not limited to this.
[0046] In a preferred embodiment, the arc-shaped through groove 231 includes a first through groove and a second through groove (not shown in the figure) that are not interconnected. The first adjusting member Sa and the second adjusting member Sb pass through the first through groove and the second through groove, respectively, and are threadedly coupled to the reflector bracket 22. In other words, the arc-shaped through groove 231 is divided into two segments for the first adjusting member Sa and the second adjusting member Sb to pass through, respectively. The first through groove and the second through groove correspond to the setting range of the adjustment positions of the roll angle and the pitch angle, respectively. In other words, the first through groove and the second through groove correspond to the setting angle range of the first adjusting shaft R1 and the second adjusting shaft R2 relative to the housing 23, respectively.
[0047] In another preferred embodiment, please refer to Figure 6 , Figure 6 This is a three-dimensional structural diagram of a reflector assembly provided in another embodiment of the present invention. The similarities to the previous embodiment will not be repeated here. The difference lies in that the first surface 22S1 of the reflector support 22 has multiple pairs of adjusting posts 222'. In this embodiment, as shown... Figure 6As shown, the first surface 22S1 of the reflector bracket 22 has three pairs of adjustment posts 222′. Each pair of adjustment axes 222′ is marked with the same marking (not a cross-section, the same applies below) for easy viewing; however, practical applications are not limited to this. The arrangement trajectory of these multiple pairs of adjustment posts 222′ corresponds to the arc-shaped through-slot 231 and is arc-shaped. The first adjustment member Sa and the second adjustment member Sb are respectively threaded into one pair of adjustment posts 222′, so that the pair of adjustment posts 222′ corresponds to the adjustment positions of the roll angle and the pitch angle, respectively. In other words, taking the compound eye lens 30 mentioned earlier as an example, the first adjustment axis R1 and the second adjustment axis R2 corresponding to the pair of adjustment posts 222′ are orthogonal to the third side 311 and the fourth side 312 of the compound eye lens 30 in the preset optical path of the current projection device.
[0048] Preferably, the two lines connecting one pair of adjustment posts 222' to the spherical protrusion 221 are orthogonal to the first side 211 and the second side 212 of the reflector 21, respectively (not shown in the figure). In other words, the first adjustment axis R1 and the second adjustment axis R2 corresponding to at least one pair of adjustment posts 222' are parallel to the first side 211 and the second side 212 of the reflector 21, respectively (not shown in the figure).
[0049] Preferably, the first surface 22S1 of the reflector bracket 22 also has multiple pairs of limiting posts 223', which are symmetrically located on opposite sides of the spherical protrusion 221 with respect to the multiple pairs of adjusting posts 222'. In this embodiment, as... Figure 6 As shown, the reflector bracket 22 has three pairs of limiting posts 223'. Each pair of limiting posts 223' is marked with the same marking, and the markings are also the same as those of the corresponding adjusting posts 222', for ease of differentiation and understanding. However, practical applications are not limited to this. In some embodiments, the first surface 22S1 of the reflector bracket 22 may also have a limiting post (not shown in the figure). This limiting post is not collinear with any pair of adjusting posts, and the spherical protrusion 221 is located within the area formed by the three posts. That is, the limiting post and any pair of adjusting posts can form a triangular shape to limit the rotation angle range of the reflector 21 on opposite sides of the first adjusting axis R1 or the second adjusting axis R2. However, practical applications are not limited to this.
[0050] It should be noted that in the two embodiments described above, the multiple pairs of limiting posts 223′ can also be compatible with the arc-shaped adjusting post 222; the arc-shaped limiting post 223 can also be compatible with the multiple pairs of adjusting posts 222′; however, the actual application is not limited to this.
[0051] In summary, the reflector assembly and projection device provided by the embodiments of this utility model include a housing, a reflector bracket, a reflector, and a first adjusting member and a second adjusting member. The housing has an arc-shaped through groove and a spherical groove. The first surface of the reflector bracket has a spherical protrusion that abuts against the spherical groove. The reflector is fixedly mounted on the second surface of the reflector bracket, which is opposite to the first surface. The first adjusting member and the second adjusting member respectively pass through the arc-shaped through groove and are threadedly coupled to the reflector bracket to adjustably fix the reflector bracket to the housing, for adjusting at least one of the roll angle and pitch angle of the reflector.
[0052] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.
Claims
1. A reflector assembly, characterized in that, include: The housing has an arc-shaped through groove and a spherical groove; A reflector bracket, the first surface of which has a spherical protrusion that abuts against a spherical groove; A reflector is fixedly mounted on the second surface of the reflector bracket, the second surface being opposite to the first surface; as well as A first adjusting member and a second adjusting member, which respectively pass through the arc-shaped through groove and are threadedly coupled to the reflector bracket, so as to adjustably fix the reflector bracket to the housing and adjust at least one of the roll angle and pitch angle of the reflector.
2. The reflector assembly as claimed in claim 1, characterized in that, The first surface of the reflector bracket has an adjustment boss, the projection shape of which corresponds to the arc-shaped through groove of the housing and is arc-shaped, and the adjustment boss is disposed in the arc-shaped through groove. The adjusting boss has a first hole and a second hole respectively at the adjustment positions corresponding to the roll angle and the pitch angle. The first adjusting member and the second adjusting member are respectively threaded into the first hole and the second hole.
3. The reflector assembly as described in claim 2, characterized in that, The first surface of the reflector bracket also has a limiting boss, the projection shape of which corresponds to the adjustment boss and is arc-shaped. The limiting boss and the adjustment boss are symmetrically located on opposite sides of the spherical protrusion. Alternatively, the first surface of the reflector bracket may also have a limiting post, the limiting post, the first hole and the second hole are not collinear, and the spherical protrusion is located in the area formed by the three.
4. The reflector assembly as claimed in claim 1, characterized in that, The first surface of the reflector bracket has multiple pairs of adjustment posts, and the arrangement trajectory of the multiple pairs of adjustment posts corresponds to the arc-shaped through slot and is arc-shaped. The first adjusting member and the second adjusting member are respectively threadedly coupled to one pair of adjusting columns of the plurality of adjusting columns, wherein the pair of adjusting columns correspond to the adjustment positions of the roll angle and the pitch angle, respectively.
5. The reflector assembly as claimed in claim 4, characterized in that, The mirror has an adjacent first side and a second side, and one pair of adjustment posts and the two lines connecting the spherical protrusion are orthogonal to the first side and the second side, respectively.
6. The reflector assembly as claimed in claim 4, characterized in that, The first surface of the reflector bracket also has multiple pairs of limiting posts, which are symmetrically located on opposite sides of the spherical protrusion with respect to the multiple pairs of adjusting posts. Alternatively, the first surface on the reflector bracket may also have a limiting post that is not collinear with any pair of adjusting posts, and the spherical protrusion is located within the area formed by the three posts.
7. The reflector assembly as claimed in claim 1, characterized in that, The first adjusting member and the second adjusting member are spring screws, and the opposite ends of the springs of the spring screws elastically abut against the reflector bracket and the housing, respectively.
8. The mirror assembly as claimed in claim 1, characterized in that, The spherical groove has a through hole at its center, and the spherical protrusion has a threaded hole at its center. The third adjusting component is a spring screw. The screw of the spring screw passes through the through hole and is locked in the threaded hole. The opposite ends of the spring of the spring screw elastically abut against the housing and the nut of the screw, respectively. Alternatively, the spherical protrusion has a spherical head, and the spherical groove has a corresponding receiving cavity, in which the spherical head is loosely accommodated.
9. The reflector assembly as claimed in claim 1, characterized in that, The arc-shaped through groove includes a first through groove and a second through groove that are not interconnected. The first adjusting member and the second adjusting member pass through the first through groove and the second through groove respectively and are threadedly coupled to the reflector bracket. The first through slot and the second through slot correspond to the setting range of the adjustment positions of the roll angle and the pitch angle, respectively.
10. A projection device, characterized in that, include: light source; as well as The reflector assembly as described in any one of claims 1 to 9, wherein the reflector of the reflector assembly is disposed relative to the light source for reflecting the light emitted by the light source so that the light is transmitted along a preset optical path of the projection device.