Polarizer convenient to install

Abstract

The utility model discloses a polarizer convenient to install. The polarizer comprises an elastic lens support used for installing a lens and magnets distributed on the periphery of the lower portion of the lens support. A positioning frame and a reinforcing frame which are respectively used for fixing symmetrical magnets are laminated or embedded below the lens bracket; the device further comprises a base, a coil and a circuit board. Limiting strips used for installing coils are distributed on the periphery of the upper surface of the base. Limiting holes matched with the limiting strips are formed in the periphery of the circuit board, and the circuit board is fixed to the base through insertion of the limiting holes and the limiting strips. The utility model has the advantages of simple structure and miniaturization; the whole body is divided into a lens limiting assembly and a driving assembly sub-assembly which are arranged up and down, and the limiting assembly and the driving assembly are designed separately and can be assembled in one step after being manufactured separately; through the design of the limiting strips on the base and the limiting holes in the circuit board, matching among the components is more accurate, the stability and the operability of the whole structure are improved, and meanwhile the error rate in the assembling process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of projector equipment, in particular to a polarizing filter which is easy to install. Background Art

[0002] The function of a projector is to project images or video signals onto a screen or other flat surface for the audience to watch. At present, projectors are widely used in entertainment venues such as cinemas, home theaters, and game halls. With the continuous advancement and innovation of technology, the application of projection technology in various fields will continue to expand and deepen.

[0003] In recent years, projection technology has made significant improvements in resolution and brightness. Modern projectors are capable of higher resolutions, such as 4K and 8K resolution, as well as higher brightness, allowing for clear and bright images in a variety of environments. With the increasing demand for high definition and high image quality, most projectors are equipped with polarizers. As a core component in projector equipment, the galvanometer plays a key role in improving the pixels of the projector. The polarizer can improve the contrast of the projected image, making the black deeper, the white brighter, and the overall image clearer; by enhancing contrast and reducing scattering, the polarizer can improve the color performance of the projected image, making the colors more vivid and more realistic.

[0004] The existing projector polarizing filters still have the following defects during application: 1. The actuating components are large in size, complex in structure, and occupy a larger space, making it difficult to meet the design requirements of product miniaturization; 2. The assembly operation is complicated and prone to positioning errors, which lead to polarizing filter vibration errors and thus affect the quality stability of the projected image.

[0005] Therefore, further research and development is needed to solve the problems existing in the prior art. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned problems, the purpose of the present invention is to provide a polarizing filter that is easy to install.

[0007] One of the purposes of the utility model is achieved by the following technical solution:

[0008] A polarizing filter that is easy to install, comprising:

[0009] The limiting assembly includes an elastic lens bracket for mounting the lens, and magnets distributed around the bottom of the lens bracket; a positioning frame and a reinforcing frame are stacked or embedded under the lens bracket and are respectively used to fix the symmetrical magnets;

[0010] The driving assembly comprises a base, a coil and a circuit board distributed on the base; the upper surface of the base is provided with limit bars for installing the coil, the coil is sleeved on the limit bars and corresponds to the magnet; the circuit board is provided with limit holes adapted to the limit bars around the circuit board, and is fixed to the base by inserting the limit holes and the limit bars;

[0011] The magnetic induction effect generated when the coil is energized drives the magnet to drive the lens to swing back and forth within the deformation range of the elastic bracket.

[0012] Furthermore, mounting plates are respectively extended outward at the two opposite ends of the lens bracket, and the mounting plates are respectively fixed to the corresponding base by fasteners; the lens bracket includes an outer bracket and an inner bracket arranged in a "U" shape; the outer bracket and the mounting plate are connected by an outer connecting plate, and the outer bracket and the inner bracket are connected by an inner connecting plate; the two inner connecting plates and the outer connecting plates are respectively symmetrically arranged in the X-axis and Y-axis directions of the lens.

[0013] Furthermore, the widths of the outer connecting piece and the inner connecting piece decrease gradually from the outside to the inside.

[0014] Furthermore, the reinforcing frame is provided with first lower edges bent at opposite ends, and the positioning frame is provided with second lower edges bent at opposite ends; the two first lower edges and second lower edges are symmetrically arranged in the X-axis and Y-axis directions of the lens.

[0015] Furthermore, the positioning frame is fixed to the lower surface of the inner bracket, and the reinforcement frame is fixed to the lower surface of the outer bracket; the magnets are respectively fixed to the inner sides of the two first lower extended edges and the outer sides of the two second lower extended edges.

[0016] Furthermore, a plurality of third lower edges are provided below the positioning frame, and the third lower edges and the second lower edges form mounting holes adapted to the lenses, and the lenses are embedded in the mounting holes.

[0017] Furthermore, the base is provided with mounting platforms corresponding to the mounting pieces, the mounting platforms are provided with mounting recesses matched with the mounting pieces, and the mounting pieces are mounted on the mounting recesses through the fasteners.

[0018] Furthermore, the limiting strips include a first limiting strip and a second limiting strip which are arranged at intervals.

[0019] Furthermore, the base is provided with limiting grooves adapted to the contour of the coil, and the first limiting strip and the second limiting strip are located on the limiting grooves.

[0020] Furthermore, the circuit board is an FPC circuit board; and the outer contour of the circuit board is adapted to the base.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The utility model has a simple structure and miniaturization; the whole is divided into a lens limit assembly and a drive assembly sub-assembly arranged at the top and bottom, and the limit assembly and the drive assembly are designed separately, and can be manufactured separately, and then assembled through structures such as mounting grooves and mounting holes; the design of the limit strips on the base and the limit holes on the circuit board makes the coordination between the components more accurate, which is conducive to the improvement of the stability and operability of the overall structure, and also reduces the error rate in the assembly process;

[0023] 2. In addition, the lens holder of the utility model adopts an integrated design of inner and outer holders, which are connected by an outer connecting piece and an inner connecting piece, making the structure more compact and stable; magnets are arranged around the bottom of the lens holder, respectively corresponding to the coils on the base, and the magnetic field generated when the coils are energized can accurately drive the magnets, so that the lens can swing back and forth within the deformation range of the elastic holder, thereby achieving four-directional shaking; further combined with the structural improvement of the lens holder, the two connecting pieces are larger outside and smaller inside, further improving the stability of shaking;

[0024] Furthermore, through the design of the positioning frame and the reinforcing frame, the lens and the magnet can be effectively supported, the stability of the overall structure is improved, and the structural strength of the lens bracket is strengthened, further improving the actuation stability;

[0025] 3. The utility model uses two magnets and two coils located on the X-axis and Y-axis of the lens respectively to independently control the X-axis and Y-axis of the lens through the forces generated by the coils when they are energized, which significantly improves the product resolution and effectively improves the performance of the polarizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a polarizing filter that is easy to install in a preferred embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a polarizing filter that is easy to install in a preferred embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the front structure of a polarizing filter that is easy to install in a preferred embodiment of the utility model;

[0029] Figure 4 for Figure 3 Schematic diagram of the cross-section structure in the AA direction;

[0030] Figure 5 A schematic diagram of the assembly state of the limiting component of the polarizer for easy installation in a preferred embodiment of the utility model;

[0031] Figure 6 A schematic diagram of the assembly state of the driving assembly of the polarizer for easy installation in a preferred embodiment of the utility model;

[0032] Figure 7 This is a schematic structural diagram of a base of a polarizing filter that is easy to install according to a preferred embodiment of the utility model.

[0033] In the figure:

[0034] 1. Limiting assembly; 11. Lens bracket; 111. Mounting sheet; 112. External bracket; 113. Internal bracket; 114. External connecting sheet; 115. Internal connecting sheet; 12. Magnet; 13. Positioning frame; 131. Second lower edge; 132. Third lower edge; 133. Mounting hole; 14. Reinforcement frame; 141. First lower edge; 15. Fastener;

[0035] 2. driving assembly; 21. base; 211. mounting platform; 2111. mounting recess; 212. limiting strip; 2121. first limiting strip; 2122. second limiting strip; 213. limiting groove; 22. coil; 23. circuit board; 231. limiting hole;

[0036] 3. Lenses. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0038] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. In addition, the "first" and "second" mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0039] like Figure 1-7 As shown, the utility model provides a polarizing filter that is easy to install, and the polarizing filter is used in a projector to improve image resolution; it includes:

[0040] The limiting assembly 1 comprises an elastic lens bracket 11 for mounting the lens 3, and magnets 12 distributed around the bottom of the lens bracket 11; a positioning frame 13 and a reinforcing frame 14 are stacked or embedded below the lens bracket 11 and are respectively used to fix the magnets 12 symmetrically;

[0041] The driving component 2 includes a base 21 and a coil 22 and a circuit board 23 distributed on the base 21; the upper surface of the base 21 is provided with limit bars 212 for installing the coil 22, and the coil 22 is sleeved on the limit bars 212 and corresponds to the magnet 12; corresponding to the magnet means that after assembly, the coil and the magnet are located on the same plane and are arranged adjacent to each other. Limit holes 231 matching the limit bars 212 are respectively provided around the circuit board 23, and the circuit board 23 is fixed to the base 21 by inserting the limit holes 231 and the limit bars 212; specifically, the circuit board 23 is an FPC circuit board; the outer contour of the circuit board 23 matches the base 21; in this embodiment, the lens bracket, the positioning frame, the reinforcement frame, and the base all include light holes (not marked in the drawings);

[0042] Therefore, the magnetic induction effect generated when the coil 22 is energized drives the magnet 12 to drive the lens 3 to swing back and forth within the deformation range of the elastic bracket.

[0043] In this embodiment, the coil is electrically connected to the controller of the projector (not shown in the drawings), and according to the magnetic effect of the current, the coil is energized to drive the magnet to drive the limit assembly and the lens to swing back and forth, generating vibration, thereby improving the resolution of the image. Specifically, the direction of the coil energization is perpendicular to the magnetic field direction of the magnet, and an upward or downward force is generated, which acts on the lens bracket, driving it to swing within its own elastic deformation range, thereby driving the lens to swing.

[0044] In this embodiment, since magnets and coils are distributed around the bottom of the lens bracket, the lens bracket can vibrate in four directions and the stability performance is better.

[0045] Preferably, mounting plates 111 are respectively extended outward at opposite ends of the lens holder 11, and the mounting plates 111 are respectively fixed to the corresponding base 21 by fasteners 15; the lens holder 11 comprises an outer holder 112 and an inner holder 113 arranged in a "U" shape; the outer holder 112 and the mounting plate 111 are connected by an outer connecting plate 114, and the outer holder 112 and the inner holder 113 are connected by an inner connecting plate 115; the two inner connecting plates 115 and the outer connecting plate 114 are respectively symmetrically arranged in the X-axis and Y-axis directions of the lens 3; the coil is energized in a direction perpendicular to the magnetic field of the magnet, which will generate an upward or downward force to drive the lens to move up and down. Since magnets and coils are distributed around the bottom of the lens, and combined with the structural improvement of the lens holder, the lens of the utility model can be shaken in four directions.

[0046] Preferably, the widths of the outer connecting piece 114 and the inner connecting piece 115 gradually decrease from the outside to the inside. In this embodiment, the outer connecting piece and the inner connecting piece are integrally formed with the lens bracket, and the widths gradually decrease from the outside to the inside; on the one hand, the integrated design simplifies the structure, and the widths gradually decrease from the outside to the inside, which further improves the stability of the swing of the polarized lens.

[0047] Preferably, the two opposite ends of the reinforcing frame 14 are respectively bent to form a first lower edge 141, and the two opposite ends of the positioning frame 13 are respectively bent to form a second lower edge 131; the two first lower edges 141 and the second lower edges 131 are respectively symmetrically arranged in the X-axis and Y-axis directions of the lens 3. The X-axis and Y-axis of the lens are independently controlled by the two magnets and the two coils respectively located on the X-axis and Y-axis of the lens through the force generated by the coils being energized, which significantly improves the product resolution and effectively improves the performance of the polarizer.

[0048] Specifically, the positioning frame 13 is fixed to the lower surface of the inner bracket 113, and the reinforcing frame 14 is fixed to the lower surface of the outer bracket 112; the magnets 12 are respectively fixed to the inner sides of the two first lower extensions 141 and the outer sides of the two second lower extensions 131. In this embodiment, two symmetrical magnets are respectively arranged on the positioning frame and the reinforcing frame. Through the design of the positioning frame and the reinforcing frame, the lens and the magnet can be effectively supported, the stability of the overall structure is improved, and the structural strength of the lens bracket is strengthened, and the actuation stability is further improved.

[0049] Preferably, a plurality of third lower edges 132 are further provided below the positioning frame 13, and the third lower edges 132 and the second lower edges 131 form mounting holes 133 adapted to the lens 3, and the lens 3 is embedded in the mounting holes 133. In this embodiment, the positioning frame is embedded in parallel with the inner periphery of the reinforcement frame, and the lens is fixed by the positioning frame, which is conducive to improving the stability of the lens installation. In addition, the lens can be fixed in the mounting hole by means of glue spot bonding or the like. In other embodiments, the positioning frame and the reinforcement frame can be stacked, or arranged in parallel and adjacently.

[0050] Further to the structure of the base, the base 21 is provided with mounting platforms 211 corresponding to the mounting pieces 111, and the mounting platforms 211 are provided with mounting recesses 2111 adapted to the mounting pieces 111, and the mounting pieces 111 are mounted on the mounting recesses 2111 via the fasteners 15.

[0051] Preferably, the limiting strip 212 includes a first limiting strip 2121 and a second limiting strip 2122 arranged at intervals, and the base 21 is provided with limiting grooves 213 adapted to the contours of the coil 22, respectively, and the first limiting strip 2121 and the second limiting strip 2122 are located on the limiting grooves 213. In this embodiment, the limiting strip is divided into the first limiting strip 2121 and the second limiting strip 2122 at intervals, which can simultaneously meet the socket connection of the circuit board and the coil, and facilitate the rapid positioning and assembly of components such as the circuit board and the coil. The design of the limiting strip on the base and the limiting hole on the circuit board makes the coordination between the components more precise, which is conducive to the improvement of the stability and operability of the overall structure, and also reduces the error rate in the assembly process, and can improve the heat dissipation effect through the gap, achieving multiple goals at one stroke.

[0052] The assembly process of the utility model is as follows: first assemble the limit assembly sub-assembly and the drive assembly sub-assembly separately, and then install the lens bracket to the base through the limit assembly sub-assembly through the fastener to complete the overall assembly, which is easy to operate and quick to install. Among them, the assembly method of the limit assembly is: fix the positioning frame to the bottom surface of the inner bracket of the lens bracket by dispensing or welding, and then fix the reinforcement frame to the bottom surface of the outer bracket of the lens bracket. After forming an overall frame structure of the lens bracket, the positioning frame, and the reinforcement frame, respectively fix the magnet to the positioning frame and the reinforcement frame, and install the lens; the assembly method of the drive assembly is: put the circuit board on the limit bar through the limit hole, and then put the coil on the limit bar respectively.

[0053] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A polarizing filter that is easy to install, characterized in that: include: The limiting assembly includes an elastic lens bracket for mounting the lens, and magnets distributed around the bottom of the lens bracket; a positioning frame and a reinforcing frame are stacked or embedded under the lens bracket and are respectively used to fix the symmetrical magnets; The driving assembly comprises a base, a coil and a circuit board distributed on the base; the upper surface of the base is provided with limit bars for installing the coil, the coil is sleeved on the limit bars and corresponds to the magnet; the circuit board is provided with limit holes adapted to the limit bars around the circuit board, and is fixed to the base by inserting the limit holes and the limit bars; The magnetic induction effect generated when the coil is energized drives the magnet to drive the lens to swing back and forth within the deformation range of the elastic bracket.

2. The easy-to-install polarizer according to claim 1, characterized in that: The opposite ends of the lens bracket are respectively provided with mounting plates extending outward, and the mounting plates are fixed to the corresponding bases by fasteners; the lens bracket includes an outer bracket and an inner bracket arranged in a "U" shape; the outer bracket and the mounting plate are connected by an outer connecting plate, and the outer bracket and the inner bracket are connected by an inner connecting plate; the two inner connecting plates and the outer connecting plates are respectively symmetrically arranged in the X-axis and Y-axis directions of the lens.

3. The easy-to-install polarizer according to claim 2, characterized in that: The widths of the outer connecting piece and the inner connecting piece decrease gradually from the outside to the inside.

4. The easy-to-install polarizer according to claim 2, characterized in that: The two opposite ends of the reinforcement frame are respectively bent to form a first lower extension, and the two opposite ends of the positioning frame are respectively bent to form a second lower extension; the two first lower extensions and second lower extensions are respectively symmetrically arranged in the X-axis and Y-axis directions of the lens.

5. The easy-to-install polarizer according to claim 4, characterized in that: The positioning frame is fixed to the lower surface of the inner bracket, and the reinforcing frame is fixed to the lower surface of the outer bracket; the magnets are respectively fixed to the inner sides of the two first lower extended edges and the outer sides of the two second lower extended edges.

6. The easy-to-install polarizer according to claim 5, characterized in that: A plurality of third lower edges are also provided below the positioning frame. The third lower edges and the second lower edges form mounting holes adapted to the lenses, and the lenses are embedded in the mounting holes.

7. The easy-to-install polarizer according to claim 2, characterized in that: The base is provided with mounting platforms corresponding to the mounting pieces, and the mounting platforms are provided with mounting recesses matched with the mounting pieces. The mounting pieces are mounted on the mounting recesses through the fasteners.

8. The easy-to-install polarizer according to claim 7, characterized in that: The limiting strips include a first limiting strip and a second limiting strip which are arranged at intervals.

9. The easy-to-install polarizer according to claim 8, characterized in that: The base is respectively provided with limiting grooves matched with the coil contour, and the first limiting strip and the second limiting strip are located on the limiting grooves.

10. The easy-to-install polarizer according to claim 8, characterized in that: The circuit board is an FPC circuit board; the outer contour of the circuit board is adapted to the base.

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