Lens adjusting assembly and projection device
By setting an adjustment bracket between the lens body and the lens decoration, the lens body deflection drives the adjustment bracket to move, which solves the lens misalignment problem, simplifies the adjustment process, improves light output accuracy and production efficiency, and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- APPOTRONICS CORP LTD
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-08
AI Technical Summary
In the existing technology, the installation deviation between the optical engine lens and the lens decoration component leads to a decrease in light output accuracy and product yield, and the adjustment is difficult. The related technology requires multiple sets of fixtures and has low adjustment accuracy.
By setting an adjustment bracket between the lens body and the lens decoration, and by deflecting the lens body to drive the adjustment bracket to move in the second direction, the displacement adjustment of the light-transmitting port can be achieved, simplifying the structure, reducing the difficulty of adjustment, and improving the accuracy.
It achieves centered adjustment of the lens body and lens decoration, reduces structural complexity and adjustment difficulty, improves light output accuracy and production efficiency, and reduces manufacturing and maintenance costs.
Smart Images
Figure CN224216987U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical technology, and in particular to lens adjustment components and projection devices. Background Technology
[0002] The optical engine assembly includes the optical engine body and the optical engine lens that are connected to each other. In order to better protect the optical engine lens and the overall appearance of the lifting device, lens decorations are usually provided on the outside of the optical engine lens.
[0003] Currently, one end of the optical engine body is connected to the optical engine lens, while the other end is fixed inside the optical engine housing. Due to the large distance between the fixed end and the connecting end, and the numerous steps involved in the installation process, the optical engine lens is prone to misalignment, leading to installation deviations between it and the lens trim, thus reducing light output accuracy and product yield. Related technologies typically employ positioning fixtures to address this misalignment issue.
[0004] However, the relevant technology requires the use of multiple sets of fixtures to achieve adjustment, which is difficult and has low precision. Utility Model Content
[0005] The main technical problem addressed by this application is to provide a lens adjustment assembly and a projection device, which can solve the problem that related technologies cannot effectively adjust the offset of the optical engine lens.
[0006] To solve the above-mentioned technical problems, the first technical solution adopted in this application is to provide a lens adjustment assembly, including: an optical engine housing, including a first end, the first end being provided with a light outlet; a lens assembly, including a lens body, the lens body being disposed inside the optical engine housing and disposed opposite to the light outlet; the axis of the lens body is defined as a first direction; a lens decorative piece, movably connected to the optical engine housing, located between the lens body and the first end; the lens decorative piece being provided with a light passage corresponding to the light outlet; an adjustment bracket, located between the lens body and the lens decorative piece, one end of the adjustment bracket being connected to the lens decorative piece and the other end being connected to the lens body; wherein, when the lens body deflects, it drives the adjustment bracket to move along a second direction, and when the adjustment bracket moves, it drives the lens decorative piece to move along the second direction to adjust the displacement of the light passage in the second direction; the second direction is perpendicular to the first direction.
[0007] The lens decorative piece has annular slots on both sides of its distribution along the second direction. The length of the annular slots is parallel to the second direction. The width of the annular slots is equal to the diameter of the first fixing member, and the length of the annular slots is greater than the diameter of the first fixing member. The first fixing member passes through the annular slots and is inserted into the optical engine housing to limit the movement of the lens decorative piece in the second direction.
[0008] The lens decoration includes two protrusions, which are symmetrically arranged on the two sides of the lens decoration along the second direction and extend outward from the lens decoration. The protrusions are provided with annular slots.
[0009] The lens trim has a first positioning post and a first mounting hole, and the adjustment bracket has a first positioning hole and a first fixing hole. The first positioning post and the first positioning hole cooperate to position the adjustment bracket and the lens trim. The first mounting hole and the first fixing hole are used to cooperate with a second fixing member to fix the adjustment bracket and the lens trim.
[0010] The lens decorative component includes a decorative body and a support plate surrounding the decorative body; the decorative body is provided with a light-transmitting opening; the support plate has protrusions on both sides of its distribution along the second direction, and a first positioning post and a first mounting hole are provided on one side of its distribution along the third direction; the third direction is perpendicular to the first direction and the second direction.
[0011] The adjustment bracket includes a first plate and a second plate that are vertically connected. The extension direction of the first plate is perpendicular to the first direction, and the extension direction of the second plate is perpendicular to the third direction. An annular groove is provided on the first plate, and the annular groove is interference-fitted with the lens body. A first positioning hole and a first fixing hole are provided on the two side edges of the second plate distributed along the second direction.
[0012] The optical engine housing includes a second end disposed opposite to the first end, and the direction of the second end pointing to the first end is parallel to the first direction; the lens adjustment assembly includes an optical engine body, which is fixedly disposed inside the optical engine housing and close to the second end; a mounting part is provided on the side of the optical engine body close to the first end, and the lens body is connected to the mounting part and can rotate relative to the mounting part along the circumference of the lens body.
[0013] The lens assembly includes a focusing ring and a drive assembly. The focusing ring is sleeved on the outer circumferential surface of the lens body and is located near the mounting part. The drive assembly is located on the side of the lens body near the mounting part and is connected to the focusing ring. The drive assembly is used to drive the focusing ring to rotate, so that the focusing ring drives the lens body to rotate.
[0014] The optical engine body has two second positioning holes and two fixing holes on one side extending along the first direction, and the optical engine housing has two second positioning posts and two second mounting holes. The second positioning posts cooperate with the second positioning holes to position the optical engine body and the optical engine housing. The second mounting holes and the second fixing holes are used to cooperate with the third fixing component to fix the optical engine body and the optical engine housing.
[0015] To solve the above-mentioned technical problems, the second technical solution adopted in this application is to provide a projection device, including the above-mentioned lens adjustment assembly.
[0016] The beneficial effects of this application are as follows: Unlike related technologies, this application provides a lens adjustment assembly and a projection device. By setting a lens decoration between the first end of the lens body and the optical engine housing, and movably connecting the lens decoration to the optical engine housing, and by setting an adjustment bracket between the lens body and the lens decoration, with one end of the adjustment bracket connected to the lens decoration and the other end connected to the lens body, the lens body can drive the adjustment bracket to move in a second direction when the lens body deflects. This, in turn, drives the lens decoration to move in the second direction, thereby adjusting the displacement of the light-passing aperture in the second direction. By setting an adjustment bracket connecting the lens body and the lens decoration, and controlling the movement of the adjustment bracket by the torque generated when the lens body deflects, and driving the movement of the lens decoration through the movement of the adjustment bracket, this application achieves centering adjustment of the lens body and the lens decoration through a simple and reliable structure without the need for additional fixtures. This not only reduces the structural complexity and adjustment difficulty of the lens adjustment assembly, but also improves the adjustment accuracy and light output accuracy, thereby reducing manufacturing and maintenance costs, and improving production efficiency and product yield. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of the optomechanical components in the related technology;
[0019] Figure 2 This is a schematic diagram of the assembly structure of the lens adjustment component of this application;
[0020] Figure 3 yes Figure 2 A schematic diagram showing the structure before the optical engine components are assembled into the optical engine housing;
[0021] Figure 4 yes Figure 2 Assembly diagram of the lens trim and adjustment bracket;
[0022] Figure 5 yes Figure 2 A schematic diagram showing the connection between the adjustment bracket and the lens body. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless otherwise clearly indicated above. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.
[0025] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0026] It should be understood that the terms "comprising," "including," or any other variations used herein are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of an optomechanical component in a related technology. For example... Figure 1As shown, the optical engine body includes two positioning holes (positioning hole 1 and positioning hole 2), both located on the same side. The distance from the front end of the optical engine assembly to H1 (105mm) is approximately three times the distance from the rear end to H2 (38mm). In other existing optical engine assemblies on the market, the difference between the front and rear end distances is even greater. This structural design means that even a small deviation during assembly and positioning will be amplified at the front end, causing lens misalignment and resulting in the lens tilting to one side. The aperture d of positioning holes 1 and 2 in the optical engine body is 1.5mm. If the size of the positioning post on the optical engine housing that mates with positioning holes 1 and 2 is reduced to 1.47mm or smaller, theoretically, the assembly accuracy can be significantly improved. However, since the lens trim and housing are both injection molded plastic, there are errors in plastic injection molding, metal processing, and assembly processes during actual manufacturing. This leads to the problem that the smaller the optical engine hole size, the more difficult the assembly becomes, resulting in reduced production efficiency and increased defect rate. Furthermore, because the optical engine lens rotates during focusing, the lens trim cannot be directly assembled with the lens; instead, it is assembled onto the optical engine housing. Therefore, the lens trim cannot directly engage with the lens and cannot adjust its position as the lens deflects. If the optical engine lens becomes misaligned, it will cause installation discrepancies between the lens and the lens trim, affecting not only aesthetics but also obstructing light output, thus reducing light output accuracy and product yield.
[0028] In related technologies, the following two solutions are generally adopted to solve the problem of optical engine lens misalignment: (1) visually check whether the misalignment is present, and after confirming the misalignment, loosen the screws and swing the optical engine lens to achieve centering adjustment; (2) use positioning fixtures to correct the misalignment problem.
[0029] However, the first method requires a large amount of manual labor, greatly increasing the workload and failing to effectively improve production efficiency. The second method requires multiple sets of fixtures for adjustment, which is difficult, and because each fixture has some deviation, it cannot effectively improve adjustment accuracy. Furthermore, since the fixtures wear down during use, and the more they are used, the more wear occurs, making lens misalignment more likely to occur, leading to batch defects and increasing replacement and maintenance costs.
[0030] Based on the above, this application provides a lens adjustment assembly and a projection device, which can solve the problem that related technologies cannot effectively adjust the optical engine lens offset.
[0031] The lens adjustment assembly provided in this application includes: an optical engine housing, including a first end with a light outlet; a lens assembly, including a lens body disposed within the optical engine housing and opposite to the light outlet; the axis of the lens body is defined as a first direction; a lens decorative piece, movably connected to the optical engine housing and located between the lens body and the first end; the lens decorative piece has a light passage corresponding to the light outlet; and an adjustment bracket, located between the lens body and the lens decorative piece, with one end connected to the lens decorative piece and the other end connected to the lens body; wherein, when the lens body deflects, it drives the adjustment bracket to move along a second direction, and when the adjustment bracket moves, it drives the lens decorative piece to move along the second direction to adjust the displacement of the light passage in the second direction; the second direction is perpendicular to the first direction. By providing a lens decorative element between the lens body and the first end of the optical engine housing, and movably connecting the lens decorative element to the optical engine housing, and by providing an adjustment bracket between the lens body and the lens decorative element, with one end of the adjustment bracket connected to the lens decorative element and the other end connected to the lens body, the adjustment bracket can be moved along a second direction by the lens body when the lens body deflects. This, in turn, drives the lens decorative element to move along the second direction, thereby adjusting the displacement of the light-passing aperture in the second direction. This application, by providing an adjustment bracket connecting the lens body and the lens decorative element, and controlling the movement of the adjustment bracket by the torque generated when the lens body deflects, and by driving the movement of the lens decorative element through the movement of the adjustment bracket, enables centering adjustment of the lens body and the lens decorative element through a simple and reliable structure without the need for additional fixtures. This not only reduces the structural complexity and adjustment difficulty of the lens adjustment assembly, but also improves the adjustment accuracy and light output accuracy, thereby reducing manufacturing and maintenance costs, and improving production efficiency and product yield.
[0032] The lens adjustment component disclosed in this application can be used in multi-functional projection systems (such as multi-functional vehicle lights, multi-functional engineering projection, multi-functional vehicle projection, etc.) and other fields involving lens adjustment.
[0033] To illustrate the specific structure of the lens adjustment assembly in this application, please refer to [link / reference]. Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the assembly structure of the lens adjustment component of this application. Figure 3 yes Figure 2 A schematic diagram of the structure before the optical engine components are assembled into the optical engine housing.
[0034] In this embodiment, the lens adjustment assembly 100 includes an optical engine housing 10, a lens assembly, a lens trim 30, and an adjustment bracket 40. The optical engine housing 10 includes a first end 11, which has a light outlet 101. The lens assembly includes a lens body 20, which is disposed within the optical engine housing 10 and opposite to the light outlet 101. The axial direction of the lens body 20 is defined as the first direction x. The lens trim 30 is movably connected to the optical engine housing 10 and is located between the lens body 20 and the first end 101. The lens trim 30 has a light passage 301 corresponding to the light outlet 101. The adjustment bracket 40 is located between the lens body 20 and the lens trim 30. One end of the adjustment bracket 40 is connected to the lens trim 30, and the other end is connected to the lens body 20. When the lens body 20 deflects, it drives the adjustment bracket 40 to move along the second direction y. When the adjustment bracket 40 moves, it drives the lens decoration 30 to move along the second direction y, so as to adjust the displacement of the light port 301 in the second direction. The second direction y is perpendicular to the first direction x.
[0035] In this embodiment, the first direction x is the light emission direction of the image light, and the second direction y is the left-right direction of the display screen, that is, the horizontal direction.
[0036] Specifically, after the image light enters the lens body 20, it is emitted along the first direction x through the lens body 20 and then emitted to the projection screen through the light port 301 and the light outlet 101.
[0037] Understandably, the lens trim 30 can decorate the lens assembly, prevent the lens assembly from being exposed, and thus improve the overall appearance and neatness of the whole machine.
[0038] In some embodiments, one end of the adjustment bracket 40 is fixedly connected to the lens decoration 30 by a fastener, and the other end of the adjustment bracket 40 is snapped into the lens body 20.
[0039] In this embodiment, by providing a lens decoration 30 between the lens body 20 and the first end 11 of the optical engine housing 10, and making the lens decoration 30 movably connected to the optical engine housing 10, and by providing an adjustment bracket 40 between the lens body 20 and the lens decoration 30, with one end of the adjustment bracket 40 connected to the lens decoration 30 and the other end connected to the lens body 20, when the lens body 20 is deflected, the lens body 20 can drive the adjustment bracket 40 to move along the second direction y, and then drive the lens decoration 30 to move along the second direction through the adjustment bracket 40, thereby adjusting the displacement of the light-transmitting port 301 in the second direction y.
[0040] Understandably, the adjustment bracket 40 acts as an intermediate bridge between the lens body 20 and the lens decoration 30, connecting the two and transmitting the torque generated by the deflection of the lens body 20 to the lens decoration 30, so that the lens decoration 30 moves with the deflection of the lens body 20, thereby keeping the light passage 301 of the lens decoration 30 aligned with the lens body 20, thus achieving centered adjustment of the lens body 20 and the lens decoration 30, thereby improving adjustment accuracy and light output accuracy.
[0041] Continue reading Figure 3 In this embodiment, the optical engine housing 10 includes a second end 12 disposed opposite to the first end 11, and the direction of the second end 12 pointing towards the first end 11 is parallel to the first direction x. The lens adjustment assembly 100 includes an optical engine body 50, which is fixedly disposed inside the optical engine housing 10 and close to the second end 12. A mounting portion 51 is provided on the side of the optical engine body 50 close to the first end 11, and the lens body 20 is connected to the mounting portion 51 and can rotate relative to the mounting portion 51 along the circumference of the lens body 20.
[0042] In some embodiments, the optical engine body 50 has two second positioning holes 52 and two fixing holes 53 on one side extending along the first direction x, and the optical engine housing 10 has two second positioning posts 13 and two second mounting holes 14. The second positioning posts 13 cooperate with the second positioning holes 52 to position the optical engine body 50 and the optical engine housing 10. The second mounting holes 14 and the second fixing holes 53 are used to cooperate with a third fixing member (not shown) to fix the optical engine body 50 and the optical engine housing 10 together.
[0043] In some embodiments, the third fastener is a screw, the second fixing hole 53 is a screw through hole, and the second mounting hole 14 is a screw mounting blind hole.
[0044] Understandably, by locking the third fastener with the second positioning post 13, the positioning accuracy of the optical engine housing 10 and the optical engine body 50 can be improved. Furthermore, by locking the third fastener, the optical engine body 50 and the optical engine housing 10 can be tightly fixed together, thereby improving the connection strength and thus improving the assembly reliability of the optical engine body 50 and the optical engine housing 10.
[0045] Please refer to the following: Figure 4 and Figure 5 , Figure 4 yes Figure 2 Assembly diagram of the center lens decorative parts and adjustment bracket. Figure 5 yes Figure 2 A schematic diagram showing the connection between the adjustment bracket and the lens body.
[0046] like Figure 5As shown, the lens assembly includes a focusing ring 21 and a drive assembly 22. The focusing ring 21 is sleeved on the outer peripheral surface of the lens body 20 and is disposed near the mounting portion 51. The drive assembly 22 is disposed on the side of the lens body 20 near the mounting portion 51 and is connected to the focusing ring 21. The drive assembly 22 is used to drive the focusing ring 21 to rotate, so that the focusing ring 21 drives the lens body 20 to rotate.
[0047] Understandably, by rotating the focusing ring 21, the focal length of the lens body 20 can be adjusted, thereby adjusting the clarity of the projected image and improving the display effect.
[0048] like Figure 4 As shown, in this embodiment, the lens decoration 30 has annular slots 31 on both sides of its two edges distributed along the second direction y. The length direction of the annular slots 31 is parallel to the second direction y. The width of the annular slots 31 is equal to the diameter of the first fixing member 61, and the length of the annular slots 31 is greater than the diameter of the first fixing member 61. The first fixing member 61 passes through the annular slots 31 and is inserted into the optical engine housing 10 to limit the movement of the lens decoration 30 in the second direction y.
[0049] In some embodiments, the lens trim 30 includes two protrusions 32, which are symmetrically disposed on the two side edges of the lens trim 30 along the second direction y and extend outward from the lens trim 30. The protrusions 32 are provided with annular slots 31.
[0050] In some specific embodiments, an annular groove 31 is provided in the middle of the protrusion 32.
[0051] In some specific embodiments, the first fastener 61 is a screw.
[0052] Understandably, since the width of the annular slot 31 is equal to the diameter of the first fixing member 61, movement of the annular slot 31 along the first direction x can be prevented. However, by making the length of the annular slot 31 greater than the diameter of the first fixing member 61, leeway can be reserved, allowing the annular slot 31 to move a certain distance along the second direction y, thereby aligning the lens decoration 30 with the lens body 20.
[0053] In some embodiments, the lens trim 30 is provided with a first positioning post 33 and a first mounting hole 34, and the adjusting bracket 40 is provided with a first positioning hole 41 and a first fixing hole 42. The first positioning post 33 and the first positioning hole 41 cooperate to position the adjusting bracket 40 and the lens trim 30. The first mounting hole 34 and the first fixing hole 42 are used to cooperate with the second fixing member 62 to fix the adjusting bracket 40 and the lens trim 30 together.
[0054] In some implementations, the second fastener 62 is a screw.
[0055] In some specific embodiments, the lens decoration 30 is provided with two first positioning posts 33 and two first mounting holes 34, and the adjustment bracket 40 is provided with two first positioning holes 41 and two first fixing holes 42.
[0056] Understandably, by locking the second fixing member 62 with the first positioning post 33, the positioning accuracy of the adjustment bracket 40 and the lens decoration 30 can be improved. Furthermore, by locking the second fixing member 62, the adjustment bracket 40 and the lens decoration 30 can be tightly fixed together, thereby improving the connection strength between the adjustment bracket 40 and the lens decoration 30.
[0057] In some embodiments, the lens trim 30 includes a trim body 35 and a support plate 36 surrounding the trim body 35. The trim body 35 is provided with a light-transmitting opening 301. The support plate 36 has protrusions 32 on both sides of its second direction y, and a first positioning post 33 and a first mounting hole 34 on one side of its third direction y. The third direction z is perpendicular to the first direction x and the second direction y. Herein, the third direction z is the vertical direction of the displayed image.
[0058] In some specific embodiments, the support plate 36 is provided with a first positioning post 33 and a first mounting hole 34 on the side edge near the optical engine housing 10.
[0059] In some embodiments, the adjustment bracket 40 includes a first plate 43 and a second plate 44 vertically connected. The extension direction of the first plate 43 is perpendicular to a first direction x, and the extension direction of the second plate 44 is perpendicular to a third direction z. An annular groove 45 is provided on the first plate 43, and the annular groove 45 is interference-fitted with the lens body 20. First positioning holes 41 and first fixing holes 42 are provided on the two side edges of the second plate 44 distributed along a second direction y.
[0060] Understandably, because the contact surface between the lens body 20 and the annular groove 45 under interference fit will generate elastic pressure, the lens body 20 and the adjustment bracket 40 can be securely connected in the assembled state.
[0061] In this embodiment, the adjustment bracket 40 and the lens decoration 30 are first precisely locked together using two first positioning posts 33 and two second fixing members 62. Then, the lens decoration 30 is placed at the first end 11 of the optical engine housing 10, with the light-transmitting port 301 of the lens decoration 30 corresponding to the light-transmitting port 101. Next, the optical engine body 50 and the lens body 20 are assembled together using the mounting part 51. Then, the optical engine body 50 is fixed to the optical engine housing 10 using two second positioning posts 13 and two third fixing members. The lens body 20 is then inserted into the annular groove 45 of the adjustment bracket 40, so that the lens body 20 and the adjustment bracket 40 form an interference fit. During the assembly of the optical engine components, when the lens body 20 deflects, the adjusting bracket 40 can be moved left and right along the second direction y by torque. Simultaneously, since the adjusting bracket 40 and the lens decoration 30 are structurally precisely positioned and fixedly connected, the left and right movement of the adjusting bracket 40 can drive the lens decoration 30 to move left and right, thereby adjusting the displacement of the light-transmitting port 301 in the second direction y, thus achieving centering adjustment of the lens body 20 and the lens decoration 30. After the position of the lens body 20 is fixed, the first fixing member 61 is inserted through the annular slot 31 of the lens decoration 30 and placed in the optical engine housing 10 to limit the position of the lens decoration 30. The above assembly and adjustment method can avoid the lens body 20 being subjected to forces from other directions, thereby improving the service life of the lens body 20.
[0062] Understandably, the number of the aforementioned components is small, the component design is simple and the fit is ingenious, and the centering adjustment of the optical engine lens and lens decoration can be achieved through a simple and reliable structure without the need for more fixtures. This not only improves process efficiency and reduces manufacturing costs, but also simplifies the adjustment process.
[0063] Unlike related technologies, this embodiment sets up an adjustment bracket 40 connecting the lens body 20 and the lens decoration 30, and controls the movement of the adjustment bracket 40 by the torque generated when the lens body 20 deflects, and drives the movement of the lens decoration 30 by the movement of the adjustment bracket 40. This allows for centering adjustment of the lens body 20 and the lens decoration 30 without the need for additional fixtures, through a simple and reliable structure. This not only reduces the structural complexity and adjustment difficulty of the lens adjustment assembly 100, but also improves the adjustment accuracy and light output accuracy, thereby reducing manufacturing and maintenance costs, and improving production efficiency and product yield.
[0064] Correspondingly, this application provides a projection device including the lens adjustment assembly 100 described above.
[0065] Unlike related technologies, this application provides a lens decorative element between the lens body and the first end of the optical engine housing, allowing the lens decorative element to be movably connected to the optical engine housing. An adjustment bracket is also provided between the lens body and the lens decorative element, with one end connected to the lens decorative element and the other end connected to the lens body. This allows the lens body to rotate, driving the adjustment bracket to move in a second direction, which in turn drives the lens decorative element to move in the second direction, thereby adjusting the displacement of the light-passing aperture in the second direction. By providing an adjustment bracket connecting the lens body and the lens decorative element, and controlling the movement of the adjustment bracket using the torque generated when the lens body rotates, and driving the movement of the lens decorative element through the movement of the adjustment bracket, this application achieves centering adjustment of the lens body and lens decorative element with a simple and reliable structure without the need for additional fixtures. This not only reduces the structural complexity and adjustment difficulty of the lens adjustment assembly but also improves adjustment accuracy and light output accuracy, thereby reducing manufacturing and maintenance costs, and increasing production efficiency and product yield.
[0066] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A lens adjustment assembly, characterized in that, include: The optical engine housing includes a first end, wherein the first end is provided with a light outlet; A lens assembly includes a lens body disposed within the optical engine housing and opposite to the light outlet; the axial direction of the lens body is defined as a first direction. A lens decorative element is movably connected to the optical engine housing and is located between the lens body and the first end; the lens decorative element is provided with a light-passing port corresponding to the light-exit port; An adjustment bracket is located between the lens body and the lens decoration, with one end of the adjustment bracket connected to the lens decoration and the other end connected to the lens body; When the lens body deflects, it drives the adjustment bracket to move along the second direction. When the adjustment bracket moves, it drives the lens decoration to move along the second direction, so as to adjust the displacement of the light-transmitting port in the second direction. The second direction is perpendicular to the first direction.
2. The lens adjustment assembly according to claim 1, characterized in that, The lens decorative piece has annular slots on both sides of its two edges distributed along the second direction. The length direction of the annular slots is parallel to the second direction. The width of the annular slots is equal to the diameter of the first fixing member, and the length of the annular slots is greater than the diameter of the first fixing member. The first fixing member passes through the annular slot and is inserted into the optical engine housing to limit the movement of the lens decoration in the second direction.
3. The lens adjustment assembly according to claim 2, characterized in that, The lens decoration includes two protrusions, which are symmetrically arranged on the two side edges of the lens decoration along the second direction and extend outward from the lens decoration. The protrusions are provided with the annular groove.
4. The lens adjustment assembly according to claim 3, characterized in that, The lens decorative piece is provided with a first positioning post and a first mounting hole, and the adjustment bracket is provided with a first positioning hole and a first fixing hole; The first positioning post cooperates with the first positioning hole to position the adjustment bracket and the lens decoration; the first mounting hole and the first fixing hole are used to cooperate with the second fixing member to fix the adjustment bracket and the lens decoration.
5. The lens adjustment assembly according to claim 4, characterized in that, The lens decoration includes a decorative body and a support plate surrounding the decorative body; The decorative body is provided with the light-transmitting opening; The support plate has protrusions on both sides of its distribution along the second direction, and the support plate has the first positioning post and the first mounting hole on one side of its distribution along the third direction; the third direction is perpendicular to the first direction and the second direction.
6. The lens adjustment assembly according to claim 5, characterized in that, The adjustment bracket includes a first plate and a second plate that are vertically connected. The extension direction of the first plate is perpendicular to the first direction, and the extension direction of the second plate is perpendicular to the third direction. The first plate has an annular groove that is interference-fitted with the lens body; the second plate has the first positioning hole and the first fixing hole on its two side edges distributed along the second direction.
7. The lens adjustment assembly according to claim 1, characterized in that, The optical engine housing includes a second end disposed opposite to the first end, and the direction of the second end pointing toward the first end is parallel to the first direction; The lens adjustment assembly includes an optical engine body, which is fixedly disposed inside the optical engine housing and close to the second end; a mounting part is provided on the side of the optical engine body close to the first end, and the lens body is connected to the mounting part and can rotate relative to the mounting part along the circumference of the lens body.
8. The lens adjustment assembly according to claim 7, characterized in that, The lens assembly includes a focusing ring and a drive assembly; The focusing ring is sleeved on the outer peripheral surface of the lens body and is located near the mounting portion; the driving component is located on the side of the lens body near the mounting portion and is connected to the focusing ring. The driving component is used to drive the focusing ring to rotate, so that the focusing ring drives the lens body to rotate.
9. The lens adjustment assembly according to claim 7, characterized in that, The optical engine body has two second positioning holes and two fixing holes on one side extending along the first direction, and the optical engine housing has two second positioning posts and two second mounting holes. The second positioning post cooperates with the second positioning hole to position the optical engine body and the optical engine housing; the second mounting hole and the second fixing hole are used to cooperate with the third fixing member to fix the optical engine body and the optical engine housing.
10. A projection device, characterized in that, Includes the lens adjustment assembly as described in any one of claims 1 to 9.