CN212111975U

CN212111975U - High-smoothness polarizer and projector using same

Info

Publication number: CN212111975U
Application number: CN202020976602.1U
Authority: CN
Inventors: 黄田中; 黄朝; 许志江
Original assignee: FOSHAN HUAYONG TECHNOLOGY CO LTD
Current assignee: FOSHAN HUAYONG TECHNOLOGY CO LTD
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-12-08
Anticipated expiration: 2030-06-01

Abstract

The utility model discloses a high-stability polarizer and a projector using the same, wherein the high-stability polarizer comprises a base, a coil group, a magnetic strip group, a lens and a limit component for mounting the lens; the limiting assembly is arranged on the upper surface of the base; the limiting assembly comprises an elastic fixing frame, a reinforcing frame and a positioning frame, and the elastic fixing frame, the reinforcing frame and the positioning frame are arranged in a stacked mode; the positioning frame is provided with an installation groove matched with the lens; the positioning frame is embedded in the inner periphery of the reinforcing frame in parallel, or the positioning frame is arranged between the elastic fixing frame and the reinforcing frame; the magnetic strip group and the coil group are arranged between the limiting component and the base, and are positioned on the same plane and are arranged adjacently; the magnetic strip group drives the lens to swing back and forth under the action of magnetic induction generated when the coil group is electrified; the utility model discloses optimize overall structure, improve lens wobbling stationarity, avoid spacing subassembly simultaneously because long-term use back part warp and lead to the decline of swing stationarity, influence the use and the life-span of polarizer.

Description

High-smoothness polarizer and projector using same

Technical Field

The utility model relates to a projecting apparatus equipment technical field especially relates to a high stationarity polarizer and use its projecting apparatus.

Background

At present, projection technology is widely used for commercial use and household use, and the projection technology equipment mainly generates an image through an optical engine and projects the image on a screen, so that the imaging quality of the projection is particularly important. In order to make the resolution of the image projected on the screen higher, a polarizer is usually added, and the purpose of improving the resolution of the projected image is achieved by the reciprocating vibration of the polarizer, so that the experience of the user is improved.

The existing polarizers are mostly driven by a motor to drive the polarizer to vibrate in a reciprocating manner, and the projector is large in size, difficult to miniaturize further and incapable of adapting to imaging equipment such as a miniature projector in the arrangement mode of the polarizers; or the magnetic force interaction between the coil and the magnetic body is utilized to drive the lens to generate reciprocating vibration, but in the existing design, the vibration influence easily causes unstable component shaking at the same time of vibration, and the component is easy to deform after long-term use, so that the projection effect is poor.

Therefore, a polarizer structure with simple structure and high smoothness is needed to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the problem that exists, the utility model aims to provide a high stationarity polarizer and use its projecting apparatus, this high stationarity polarizer optimizes spacing subassembly overall structure, improves the wobbling stationarity of lens, avoids spacing subassembly to lead to the decline of wobbling stationarity owing to the part deformation after long-term the use simultaneously, influences the result of use and the life-span of polarizer.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

a polarizer with high smoothness is used for improving the image resolution and comprises a base, a coil group, a magnetic strip group, a lens and a limiting component for mounting the lens; the limiting assembly is arranged on the upper surface of the base; the limiting assembly comprises an elastic fixing frame, a reinforcing frame and a positioning frame, and the elastic fixing frame, the reinforcing frame and the positioning frame are arranged in a stacked mode; the positioning frame is provided with a mounting groove matched with the lens, and the lens is mounted in the mounting groove; the positioning frame is embedded in the inner periphery of the reinforcing frame in parallel, or the positioning frame is arranged between the elastic fixing frame and the reinforcing frame; the magnetic strip group and the coil group are arranged between the limiting assembly and the base, and are positioned on the same plane and are arranged adjacently; the magnetic strip group drives the lens to swing back and forth in the deformation range of the elastic fixing frame under the magnetic induction effect generated when the coil group is electrified.

Furthermore, two opposite ends of the elastic fixing frame extend outwards horizontally and are provided with connecting pieces respectively, and the elastic fixing frame is fixed on the base through the connecting pieces; the connecting piece comprises a body and a first connecting piece for connecting the elastic fixing frame; the width of one end of the first connecting piece, which is connected with the connecting piece body, is larger than that of one end of the first connecting piece, which is connected with the elastic fixing frame.

Furthermore, the elastic fixing frame comprises an outer frame and an inner frame; the inner frame is fixed on the inner periphery of the outer frame through the second connecting piece; the reinforcing frame is fixed on the lower surface of the outer frame; the positioning frame is fixed on the lower surface of the inner frame; the locating rack is provided with a plurality of clamping pieces along the circumferential direction of the locating rack, and the clamping pieces surround the mounting groove.

Furthermore, the width of one end of the second connecting piece connected with the outer frame is larger than that of one end of the second connecting piece connected with the inner frame.

Further, the magnetic strip group comprises a first magnetic strip and a second magnetic strip; the coil group comprises a first coil and a second coil; the side edge of the reinforcing frame vertically extends downwards to form a bent part, and the first magnetic stripe is fixed on the lower surface of the reinforcing frame and is abutted against the bent part; the first coil is positioned between the first magnetic strip and the lens; the second magnetic stripe is fixed on the lower surface of the positioning frame and is positioned between the second coil and the lens.

Furthermore, the first magnetic strip and the second magnetic strip are respectively arranged in the Y-axis direction and the X-axis direction of the lens.

Further, the base upper surface is equipped with and is used for the installation first coil, the spacing sand grip of second coil, first coil, second coil overlap respectively and are established on the spacing sand grip.

Further, the base upper surface is equipped with and is used for installing the depressed part of first coil, second coil, spacing sand grip sets up on the depressed part.

Furthermore, the upper surface of the base is respectively provided with a mounting boss corresponding to the connecting sheet, and the connecting sheet is fixed on the mounting boss through a fastener.

A second object of the present invention is to provide a projector, which comprises the above polarizer with high flatness.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a through the overall structure who optimizes the polarizer, improved the plane degree of spacing subassembly and the stationarity of lens swing, the characteristic quality of polarizer is more stable when effectively strengthening the image resolution;

2. the width of the first connecting piece connecting the elastic fixing frame and the base is larger than the width of one end of the elastic fixing frame, so that the design effectively improves the stability of the swing of the lens;

3. the utility model adopts the auxiliary cooperation of the reinforcing frame and the positioning frame, which not only can better position the magnetic stripe and the lens, but also further improves the stability of the lens swing; meanwhile, the reduction of the swinging stability of the limiting assembly caused by the deformation of the part after long-term use is avoided, and the use effect and the service life of the polarizer are influenced;

4. the utility model separately controls the swinging of the polarizer lens in the X-axis and Y-axis directions by the force generated by electrifying the magnetic stripe and the coil, which is beneficial to improving the swinging stability of the lens;

5. the utility model has simple and reasonable structure design and low production cost; meanwhile, the whole structure is integrally designed in a miniaturized mode, and the adaptability is higher.

Drawings

FIG. 1 is a schematic structural view of a polarizer with high flatness according to a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the polarizer with high flatness according to the preferred embodiment of the present invention;

FIG. 3 is a bottom view of the polarizer with high flatness according to the preferred embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the high flatness polarizer of FIG. 3 taken along the Y-axis direction;

FIG. 5 is a schematic diagram of the polarizer base according to the preferred embodiment of the present invention;

fig. 6 is a schematic view of the polarizer assembly according to the preferred embodiment of the present invention.

In the figure: 1. a base; 11. limiting convex strips; 12. a recessed portion; 13. mounting a boss; 2. a coil assembly; 21. a first coil; 22. a second coil; 3. a magnetic strip group; 31. a first magnetic stripe; 32. a second magnetic stripe; 4. a lens; 5. a limiting component; 51. an elastic fixing frame; 511. an outer frame; 512. an inner frame; 52. a reinforcing frame; 521. a bending section; 53. a positioning frame; 531. mounting grooves; 532. a clamping piece; 54. a second connecting member; 6. connecting sheets; 61. a body; 62. a first connecting member; A. a circuit board.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The term "connected" is to be understood broadly, for example, as being fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. In addition, the terms "first" and "second" in the present invention do not denote any particular quantity or order, but rather are used to distinguish one name from another.

As shown in fig. 1-6, a polarizer with high flatness for improving image resolution includes a base 1, a coil assembly 2, a magnetic strip assembly 3, a lens 4, and a limiting assembly 5 for mounting the lens 4; the limiting assembly 5 is arranged on the upper surface of the base 1; the limiting assembly 5 comprises an elastic fixing frame 51, a reinforcing frame 52 and a positioning frame 53, and the elastic fixing frame 51, the reinforcing frame 52 and the positioning frame 53 are arranged in a stacked manner; the positioning frame 53 is provided with an installation groove 531 matched with the lens 4, and the lens 4 is installed in the installation groove 531; the positioning frame 53 is embedded in the inner periphery of the reinforcing frame 52 in parallel, or the positioning frame 53 is arranged between the elastic fixing frame 51 and the reinforcing frame 52; the magnetic strip group 3 and the coil group 2 are arranged between the limiting component 5 and the base 1, and the magnetic strip group 3 and the coil group 2 are positioned on the same plane and are arranged adjacently; the magnetic strip group 3 drives the lens 4 to swing back and forth within the deformation range of the elastic fixing frame 51 under the magnetic induction generated when the coil group 2 is electrified.

In this embodiment, the coil assembly 2 is electrically connected to a controller (not shown in the drawing) of the projector, and according to the magnetic effect of the current, the coil assembly 2 drives the magnetic strip assembly 3 to drive the limiting assembly 5 and the lens 4 to swing back and forth to generate vibration, thereby improving the resolution of the image. Specifically, the energizing direction of the coil assembly 2 is perpendicular to the magnetic field direction of the magnetic strip assembly 3, so that an upward or downward force is generated to drive the limiting assembly 5 to swing within the elastic deformation range of the limiting assembly, and further drive the lens 4 to swing.

In this embodiment, the reinforcing frame 52 is adopted to assist in positioning the magnetic strip group 3 on one hand, and on the other hand, the reinforcing frame 52 is added to enhance the strength of the limiting component 5, improve the stability of the vibration of the lens 4 of the polarizer, and be more beneficial to improving the resolution of the image; meanwhile, the situation that the swing stability of the limiting assembly 5 is reduced due to the deformation of parts after long-term use, and the using effect and the service life of the polarizer are influenced is avoided.

In this embodiment, the reinforcing frame 52, the positioning frame 53 and the elastic fixing frame 51 can be fixed by dispensing and welding.

As a further preferred embodiment, two opposite ends of the elastic fixing frame 51 are respectively provided with a connecting piece 6 extending horizontally outwards, and the elastic fixing frame 51 is fixed on the base 1 through the connecting pieces 6; the connecting piece 6 comprises a body 61 and a first connecting piece 62 for connecting the elastic fixing frame 51; the width of one end of the first connecting piece 62 connected with the connecting piece 6 body 61 is larger than that of one end of the first connecting piece 62 connected with the elastic fixing frame 51.

In this embodiment, the elastic fixing frame 51 passes through the connecting sheet 6 and is connected with the base 1, the body 61 and the first connecting piece 62 are all integrally formed with the elastic fixing frame 51, and the integrated design is more favorable to improving the stability of the polarizer, and simultaneously, the structure is simplified, and the whole volume is reduced.

In addition, the width of the end of the connecting piece 6 connected with the body 61 of the connecting piece 62 is larger than the width of the end of the connecting piece 62 connected with the elastic fixing frame 51, so that the connecting part of the connecting piece 6 and the base 1 is more stable, and the swinging smoothness of the lens 4 of the polarizer is further improved by the design.

As a further preferred embodiment, the elastic fixing frame 51 comprises an outer frame 511 and an inner frame 512; a second connector 54; the inner frame 512 is fixed on the inner periphery of the outer frame 511 through the second connecting piece 54; the reinforcing frame 52 is fixed on the lower surface of the outer frame 511; the positioning frame 53 is fixed on the lower surface of the inner frame 512; the locating rack 53 is provided with a plurality of clamping pieces 532 along the circumferential direction, and the clamping pieces 532 surround to form the mounting groove 531.

In this embodiment, the positioning frame 53 is embedded in the inner periphery of the reinforcing frame 52 in parallel, and the lens 4 is fixed by the positioning frame 53, which is beneficial to improving the mounting stability of the lens 4. In addition, the lens 4 may be fixed in the mounting groove 531 by glue dispensing or the like. In other embodiments, the positioning frame 53 and the reinforcing frame 52 may be stacked or disposed parallel and adjacent to each other.

In a further preferred embodiment, the width of the end of the second connector 54 connected to the outer frame 511 is greater than the width of the end of the second connector 54 connected to the inner frame 512.

It should be noted that, with reference to the above design that the width of the end of the first connecting piece 62 connected to the connecting piece 6 body 61 is greater than the width of the end of the first connecting piece 62 connected to the elastic fixing frame 51, the width of the end of the second connecting piece 54 connected to the outer frame 511 is greater than the width of the end of the second connecting piece 54 connected to the inner frame 512, and this design mode is also beneficial to improving the swinging smoothness of the lens 4 of the polarizer.

As a further preferred embodiment, referring to fig. 2, the magnetic stripe group 3 includes a first magnetic stripe 31, a second magnetic stripe 32; the coil assembly 2 comprises a first coil 21 and a second coil 22; a bent part 521 is vertically and downwardly extended from the side of the reinforcing frame 52, and the first magnetic strip 31 is fixed on the lower surface of the reinforcing frame 52 and abuts against the bent part 521; the first coil 21 is positioned between the first magnetic strip 31 and the lens 4; the second magnetic strip 32 is fixed on the lower surface of the positioning frame 53 and is located between the second coil 22 and the lens 4.

In this embodiment, the first magnetic stripe 31 is fixed on the reinforcing frame 52, the second magnetic stripe 32 is fixed on the positioning frame 53, and the magnetic stripe group 3 drives the reinforcing frame 52 and the positioning frame 53 to swing back and forth under the elastic action of the elastic fixing frame 51 under the magnetic induction generated when the coil group 2 is energized.

In this embodiment, the positioning frame 53 is used to further strengthen the structural strength of the position limiting component 5, so as to prevent the deformation of the component after long-term use, and is used to position the second magnetic stripe 32, so as to optimize the overall structure of the position limiting component 5, so as to stabilize the swinging of the polarizer.

As a more preferable embodiment, referring to fig. 3, the first magnetic stripe 31 and the second magnetic stripe 32 are respectively provided in the Y-axis direction and the X-axis direction of the lens 4.

Specifically, the first magnetic stripe 31 and the second magnetic stripe 32 are respectively disposed in the Y-axis and X-axis directions of the lens 4, and correspondingly, the first coil 21 and the second coil 22 are also respectively disposed correspondingly, so that the force generated by the first magnetic stripe 31, the first coil 21, the second magnetic stripe 32 and the second coil 22 can independently control the swing of the lens 4 in the Y-axis and X-axis directions, thereby effectively improving the resolution of the image.

As a further preferred embodiment, referring to fig. 5, a limiting protrusion 11 for mounting the first coil 21 and the second coil 22 is provided on the upper surface of the base 1, and the first coil 21 and the second coil 22 are respectively sleeved on the limiting protrusion 11.

In a further preferred embodiment, a recessed portion 12 for mounting the first coil 21 and the second coil 22 is provided on the upper surface of the base 1, and the limit protruding strip 11 is provided on the recessed portion 12.

In this embodiment, adopt depressed part 12 and spacing sand grip 11 to be used for the installation coil group 2 can save the shared space of coil group 2, reduces the volume of the whole device of polarizer to can avoid the coil and the contact wear of other components, improve and use the reliability.

As a further preferred embodiment, the upper surface of the base 1 is provided with mounting bosses 13 corresponding to the connecting pieces 6, the connecting pieces 6 are fixed on the mounting bosses 13 by fasteners, and in other embodiments, the connecting pieces 6 can be fixed by dispensing and welding.

When the polarizer of the present invention is assembled, the first coil 21 and the second coil 22 are respectively fixed on the limiting convex strip 11 of the base 1, and the first magnetic stripe 31 is fixed on the lower surface of the reinforcing frame 52 and is adjacent to the first coil 21; the second magnetic strip 32 is fixed on the lower surface of the positioning frame 53 and is adjacent to the second coil 22; the reinforcing frame 52 and the positioning frame 53 are respectively fixed on the lower surfaces of the outer frame 511 and the inner frame 512 of the elastic fixing frame 51; the elastic fixing frame 51 is fixed on the mounting boss 13 of the base 1 through the connecting sheet 6.

Referring to fig. 6, the circuit board a of the present invention is electrically connected to the controller, and when the first coil 21 and the second coil 22 are powered on, the first magnetic stripe 31 and the second magnetic stripe 32 respectively and simultaneously generate an upward or downward force to drive the lens 4 to swing back and forth; the reinforcing frame 52 and the positioning frame 53 are matched with the elastic fixing frame 51, so that the smoothness of the reciprocating swing of the lens 4 is improved.

The utility model also provides a projecting apparatus, this projecting apparatus contain above-mentioned high steady degree polarizer, the utility model discloses a projecting apparatus is through adopting above-mentioned high steady degree polarizer, and the image resolution is higher, and the formation of image is stable, and the projection is effectual.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A polarizer with high smoothness is used for improving the resolution of an image and is characterized by comprising a base, a coil group, a magnetic strip group, a lens and a limiting component for mounting the lens; the limiting assembly is arranged on the upper surface of the base; the limiting assembly comprises an elastic fixing frame, a reinforcing frame and a positioning frame, and the elastic fixing frame, the reinforcing frame and the positioning frame are arranged in a stacked mode; the positioning frame is provided with a mounting groove matched with the lens, and the lens is mounted in the mounting groove; the positioning frame is embedded in the inner periphery of the reinforcing frame in parallel, or the positioning frame is arranged between the elastic fixing frame and the reinforcing frame; the magnetic strip group and the coil group are arranged between the limiting assembly and the base, and are positioned on the same plane and are arranged adjacently; the magnetic strip group drives the lens to swing back and forth in the deformation range of the elastic fixing frame under the magnetic induction effect generated when the coil group is electrified.

2. The polarizer with high flatness of claim 1, wherein two opposite ends of the elastic fixing frame are respectively provided with a connecting sheet extending horizontally outwards, and the elastic fixing frame is fixed on the base through the connecting sheets; the connecting piece comprises a body and a first connecting piece for connecting the elastic fixing frame; the width of one end of the first connecting piece, which is connected with the connecting piece body, is larger than that of one end of the first connecting piece, which is connected with the elastic fixing frame.

3. The polarizer of claim 1, wherein the elastic holder comprises an outer frame and an inner frame; the inner frame is fixed on the inner periphery of the outer frame through the second connecting piece; the reinforcing frame is fixed on the lower surface of the outer frame; the positioning frame is fixed on the lower surface of the inner frame; the locating rack is provided with a plurality of clamping pieces along the circumferential direction of the locating rack, and the clamping pieces surround the mounting groove.

4. The polarizer of claim 3, wherein the width of the end of the second connecting member connected to the outer frame is greater than the width of the end of the second connecting member connected to the inner frame.

5. The polarizer of claim 3, wherein the set of magnetic strips comprises a first magnetic strip, a second magnetic strip; the coil group comprises a first coil and a second coil; the side edge of the reinforcing frame vertically extends downwards to form a bent part, and the first magnetic stripe is fixed on the lower surface of the reinforcing frame and is abutted against the bent part; the first coil is positioned between the first magnetic strip and the lens; the second magnetic stripe is fixed on the lower surface of the positioning frame and is positioned between the second coil and the lens.

6. The polarizer of claim 5, wherein the first and second magnetic strips are disposed along the Y-axis and X-axis of the lens, respectively.

7. The polarizer with high flatness of claim 5, wherein the upper surface of the base is provided with a limit protrusion strip for mounting the first coil and the second coil, and the first coil and the second coil are respectively sleeved on the limit protrusion strip.

8. The polarizer of claim 7, wherein the upper surface of the base has a recess for mounting the first coil and the second coil, and the limiting protrusion is disposed on the recess.

9. The polarizer of claim 2, wherein the upper surface of the base has mounting bosses corresponding to the connecting plates, respectively, and the connecting plates are fixed to the mounting bosses by fasteners.

10. A projector comprising the high flatness polarizer of any of claims 1-9.