CN210294585U

CN210294585U - Polarizer and projector comprising same

Info

Publication number: CN210294585U
Application number: CN201920376811.XU
Authority: CN
Inventors: 黄田中; 黄朝
Original assignee: FOSHAN HUAYONG TECHNOLOGY CO LTD
Current assignee: FOSHAN HUAYONG TECHNOLOGY CO LTD
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-04-10
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a polarizer and contain its projecting apparatus, wherein, the polarizer includes the mounting base, the elastic fixation board, coil winding and magnetic stripe group, install the elastic fixation board on the mounting base, set up coil winding at the lower extreme of elastic fixation board, the lens of polarizer sets firmly on the elastic fixation board, magnetic stripe group installs on the mounting base and is located the below of elastic fixation board, and be close to parallelly with coil winding, with the help of magnetic stripe group, coil winding produces magnetic field when the circular telegram so that the lens of polarizer takes place the swing under the elastic action of elastic fixation board, so just in the lens of polarizer take place the swing in-process, the stationarity is better, the characteristic quality is stable, thereby make the image effect that the projecting apparatus projected is better, and through the integrated design of elastic fixation board, the simplified structure, make the installation space that the polarizer occupy less, and then be favorable to dwindling the volume of projecting apparatus, the adaptability is stronger.

Description

Polarizer and projector comprising same

Technical Field

The utility model relates to a projection equipment technical field especially relates to a polarizer and contain its projecting apparatus.

Background

The polarizer is a polarizer, also called a color filter, and has an excellent function of selectively passing light vibrating in a certain direction, and is commonly used in color and black-and-white photography to eliminate or reduce strong reflection of a non-metallic surface, thereby eliminating or reducing light spots, and is widely used in projectors.

The polarizer is usually installed between a display chip and a lens of the projector, and the projector performs high-frequency reciprocating swing during projection work so that light emitted by the display chip is deflected by a small angle after passing through the polarizer, and the projected original image is divided into two sub-frame images, the two sub-frame images are superposed to obtain a new image which is the same as the original image, wherein the pixels of the new image are twice of the original image, and thus, the quality of the image projected by the projector is improved.

However, the existing polarizer is generally driven by a motor to swing, that is, the polarizer is installed in the housing of the projector, and meanwhile, the motor is also needed to be installed in the housing of the projector to drive the polarizer to swing back and forth at high frequency during operation, but the motor needs to occupy a certain space when installed in the housing of the projector, which leads to an increase in the volume of the projector and is not suitable for a micro projector; or the relative rotation of the two frames is utilized to realize the swinging of the polarizer, namely, the inner frame is rotationally connected with the outer frame, the lens of the polarizer is arranged in the inner frame, the swinging of the polarizer is realized through the rotation of the inner frame provided with the lens relative to the outer frame, so that the stability of the polarizer in the swinging process is poor, and the poor image effect projected by the projector is influenced.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model aims to provide a simple structure, the less and lens of polarizer of volume are at a polarizer of wobbling in-process smoothness preferred.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides a polarizer, the polarizer includes mounting base, elasticity fixed plate, coil winding and magnetic stripe group, wherein, the mounting base is last to be installed elasticity fixed plate the lower extreme of elasticity fixed plate sets up the coil winding, the lens of polarizer set firmly in on the elasticity fixed plate, magnetic stripe group install in just be located on the mounting base the below of elasticity fixed plate, and with the coil winding is close to parallelly, with the help of the magnetic stripe group, the coil winding produces magnetic field so that the lens of polarizer is in the swing takes place under the elastic action of elasticity fixed plate when the circular telegram.

Furthermore, the elastic fixing plate comprises a first fixing portion and a second fixing portion, the first fixing portion is fixedly connected to the mounting base, and a connecting portion is arranged at a diagonal of the second fixing portion and connected with the first fixing portion.

Further, the first fixing portion and the second fixing portion are integrally formed.

Further, the polarizer further comprises a fixed support, the fixed support is arranged at the lower end of the second fixed portion, and the coil winding is wound on the fixed support.

Furthermore, the upper surface of the second fixing part is also provided with a plurality of positioning holes so as to facilitate the installation and positioning of the fixing support.

Further, the second fixed part is annular, the lens of polarizer is installed to the inner ring of second fixed part, the inner ring is provided with a plurality of stationary blades and is used for the fixed of the lens of polarizer, the outer loop of second fixed part is provided with a plurality of centre gripping pieces and is used for the centre gripping of fixed bolster.

Further, still be provided with on the mounting base and be used for the mounting panel of mounting base installation, still be provided with through-hole and waist type hole so that on the mounting panel mounting and regulation of mounting base.

Further, the magnetic strip group is including a plurality of magnetic strips, the inboard of mounting base is equipped with a plurality of installation notches, the magnetic strip install in the installation notch.

The utility model also provides a projecting apparatus, including controller and foretell polarizer, the controller with coil winding electric connection, and control coil winding switches on according to predetermineeing the cycle, so that the lens reciprocating swing of polarizer.

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

the utility model discloses a produce the magnetic field with the help of the magnetic stripe group when the coil winding is switched on so that the lens of polarizer takes place the swing under the elastic action of elastic fixation plate to make the lens of polarizer take place the swing in-process, the stationarity is better, the characteristic quality is stable, thereby makes the image effect that the projecting apparatus projected better; still through the integrated design of elastic fixation plate, simplify the structure for the installation space that the polarizer took in the projecting apparatus shell is less, and then is favorable to dwindling the volume of projecting apparatus, and the adaptability is stronger.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural view of an embodiment of the present invention without a fixing bracket;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is a schematic structural view of an elastic fixing plate according to an embodiment of the present invention;

fig. 6 is a schematic view of the assembly structure of the present invention.

In the figure: 1. mounting a base; 10. mounting a plate; 100. a through hole; 101. a kidney-shaped hole; 11. installing a notch; 110. a magnetic strip; 2. an elastic fixing plate; 20. a first fixed part; 21. a connecting portion; 22. a second fixed part; 220. positioning holes; 221. a clamping piece; 222. a fixing sheet; 3. fixing a bracket; 4. a pin; 5. a coil winding; 6. a lens; 7. a circuit control device.

Detailed Description

In the following, the present invention is described with priority in conjunction with the accompanying drawings and the detailed description, and it should be noted that, in the premise of no conflict, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", 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 being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The implementation mode is as follows:

as shown in fig. 1-4, the present invention discloses a polarizer, which comprises a mounting base 1, an elastic fixing plate 2, a coil winding 5 and a magnetic stripe 110 set, wherein the elastic fixing plate 2 is mounted on the mounting base 1, the coil winding 5 is disposed at the lower end of the elastic fixing plate 2, a lens 6 of the polarizer is located in the coil winding 5 and is fixedly disposed on the elastic fixing plate 2, the magnetic stripe 110 set is mounted on the mounting base 1 and is located below the elastic fixing plate 2 and is parallel to the coil winding 5, by means of the magnetic stripe 110 set, the coil winding 5 generates a magnetic field when being energized so that the lens 6 of the polarizer swings under the elastic action of the elastic fixing plate 2, and according to the magnetic effect of current, i.e. the law of electromagnetic induction, when the coil winding 5 is energized, the coil winding 5 is subjected to the magnetic field generated by the magnetic strip 110 set to generate a torque to rotate, since the current generated in the direction of energization of the coil winding 5 is perpendicular to the direction of the magnetic field generated by the set of magnetic strips 110, the force generating the torque is upward or downward, thereby driving the lens 6 of the polarizer to swing, so that the lens 6 of the polarizer has better stability and stable characteristic quality in the swinging process, so that the image projected by the projector is better, it should be noted that, the coil winding 5 is electrically connected with the controller of the projector, and the controller of the projector controls the coil winding 5 to energize alternating voltage according to a preset period to make the mirror 6 of the polarizer oscillate back and forth, see figure 6, it can be understood that the electrical connection is realized by electrically connecting the circuit control device 7 of the polarizer with the controller of the projector.

In a preferred embodiment, referring to fig. 2 and fig. 5, the elastic fixing plate 2 includes a first fixing portion 20 and a second fixing portion 22, the first fixing portion 20 is fixed to the mounting base 1, the first fixing portion 20 of the elastic fixing plate 2 can be fixed to the mounting base 1 by a pin 4, of course, the fixing portions can be fixed by other methods, which are not limited herein, a connecting portion 21 is disposed at a diagonal of the second fixing portion 22 and connected to the first fixing portion 20, since the lens 6 of the polarizer is fixed to the second fixing portion 22 of the elastic fixing plate 2, when the coil winding 5 is energized to generate a magnetic field under the action of the magnetic stripe 110 set, and under the action of the elastic force of the elastic fixing plate 2, the generated torque can make the second fixing portion 22 of the elastic fixing plate 2 swing around the connecting portion 21, that is, the connecting portion 21 is equivalent to a rotation axis, it can be understood that the lens 6 of the polarizer mounted to the second fixing portion 22 swings with the swing of the second fixing portion 22 of the elastic fixing plate 2; in order to simplify the utility model discloses a structure, preferentially, first fixed part 20 with second fixed part 22 integrated into one piece utilizes the integrated design of elastic fixation board 2 promptly, simplifies the structure for the installation space that the polarizer occupy in the projector shell is less, and then is favorable to dwindling the volume of projector, and the adaptability is stronger.

As shown in fig. 2, preferentially, the magnetic stripe 110 group includes a plurality of magnetic stripes 110, and the inner side of the mounting base 1 is provided with a plurality of mounting notches 11, and the magnetic stripes 110 are mounted in the mounting notches 11, it can be understood that different numbers of magnetic stripes 110 can be set according to the needs of the customers, and correspondingly, a plurality of mounting notches 11 for mounting the magnetic stripes 110 are provided, in the embodiment of the present invention, 2

magnetic stripes

110 and 2 corresponding mounting notches 11 are provided, and the number of the magnetic stripes 110 is not limited herein. It should be noted that, the thickness of each magnetic stripe 110 is approximately equal to the length and the thickness of the installation notch 11, that is, when the magnetic stripe 110 is installed in the installation notch 11, the two opposite sides of the magnetic stripe 110 are clamped by the two opposite groove walls of the installation notch 11, so as to facilitate the installation and fixation of the magnetic stripe 110. In addition, when the magnetic stripe 110 is placed in the mounting slot 11, the surface of the magnetic stripe 110 exposed from the mounting slot 11 and the side surface of the mounting base 1 are coplanar, so that the problem that the magnetic stripe 110 protrudes out of the side surface of the mounting base 1 to interfere the elastic fixing plate 2 to influence the normal rotation of the elastic fixing plate is solved.

In addition, referring to fig. 2-5, the polarizer of the present invention further includes a fixing bracket 3, the fixing bracket 3 is disposed at the lower end of the second fixing portion 22, the coil winding 5 surrounds the fixing bracket 3, the fixing of the coil winding 5 is facilitated by the fixing bracket 3, in order to make the fixing bracket 3 more convenient to install and position, further, the upper surface of the second fixing portion 22 is further provided with a plurality of positioning holes 220 to facilitate the installation and positioning of the fixing bracket 3, further, the second fixing portion 22 is ring-shaped, the lens 6 of the polarizer is installed on the inner ring of the second fixing portion 22, the inner ring is provided with a plurality of fixing pieces 222 for fixing the lens 6 of the polarizer, it should be noted that the lens 6 of the polarizer can be fixed on the fixing pieces 222 of the second fixing portion 22 of the elastic fixing plate 2 by glue or in other manners, without limitation, the outer ring of the second fixing portion 22 is provided with a plurality of clamping pieces 221 for clamping the fixing bracket 3. It should be noted that the present invention can eliminate the installation of the fixing bracket 3, and when the installation of the fixing bracket 3 is eliminated, the coil winding 5 is directly fixed to the second fixing portion 22 of the elastic fixing plate 2.

In a preferred embodiment, as shown in fig. 6, in order to facilitate the installation and adjustment of the installation base 1, an installation plate 10 for installing the installation base 1 is further disposed on the installation base 1, and a through hole 100 and a waist-shaped hole 101 are further disposed on the installation plate 10 so as to facilitate the installation and adjustment of the installation base 1, because the waist-shaped hole 101 has a certain length, the position of a screw can be adjusted along the length direction of the waist-shaped hole 101, thereby avoiding the problem that the through hole 100 and the waist-shaped hole 101 on the installation base 1 cannot be aligned with the screw hole on the housing of the projector, and facilitating the fixed installation of the installation base 1 and the housing of the projector.

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, characterized in that: the polarizer comprises a mounting base, an elastic fixing plate, a coil winding and a magnetic strip group, wherein the elastic fixing plate is mounted on the upper portion of the mounting base, the coil winding is arranged on the lower portion of the elastic fixing plate, lenses of the polarizer are fixedly arranged on the elastic fixing plate, the magnetic strip group is mounted on the side portion of the mounting base and located below the elastic fixing plate and is adjacent to and parallel to the coil winding, and by means of the magnetic strip group, the coil winding generates a magnetic field when electrified so that the lenses of the polarizer swing under the elastic action of the elastic fixing plate.

2. A polarizing mirror as claimed in claim 1, characterized in that: the elastic fixing plate comprises a first fixing part and a second fixing part, the first fixing part is fixedly connected to the upper surface of the mounting base, and a connecting part is arranged at one diagonal of the second fixing part and connected with the first fixing part.

3. A polarizing mirror as claimed in claim 2, characterized in that: the first fixing portion and the second fixing portion are integrally formed.

4. A polarizing mirror as claimed in claim 3, characterized in that: the polarizer further comprises a fixed support, the fixed support is arranged at the lower end of the second fixed portion, and the coil winding is wound on the fixed support.

5. A polarizing mirror as claimed in claim 4, characterized in that: the upper surface of the second fixing part is also provided with a plurality of positioning holes so as to facilitate the installation and the positioning of the fixing support.

6. A polarizing mirror as claimed in claim 5, characterized in that: the second fixed part is annular, the lens of polarizer is installed to the inner ring of second fixed part, the inner ring is provided with a plurality of stationary blades and is used for the fixed of the lens of polarizer, the outer loop of second fixed part is provided with a plurality of holding pieces and is used for the centre gripping of fixed bolster.

7. A polarizing mirror as claimed in claim 1, characterized in that: still be provided with on the mounting base and be used for the mounting panel of mounting base installation, still be provided with through-hole and waist type hole so that on the mounting panel mounting and regulation of mounting base.

8. A polarizing mirror as claimed in claim 1, characterized in that: the magnetic strip group comprises a plurality of magnetic strips, a plurality of installation notches are formed in the inner side of the installation base, and the magnetic strips are installed in the installation notches.

9. A projector characterized by: the polarizer of any of claims 1 to 8, comprising a controller and the polarizer, wherein the controller is electrically connected to the coil winding and controls the coil winding to be energized according to a predetermined period, so that the lens of the polarizer swings back and forth.