CN106681086B - Support of oscillating mirror, oscillating mirror and projector - Google Patents
Support of oscillating mirror, oscillating mirror and projector Download PDFInfo
- Publication number
- CN106681086B CN106681086B CN201611250887.5A CN201611250887A CN106681086B CN 106681086 B CN106681086 B CN 106681086B CN 201611250887 A CN201611250887 A CN 201611250887A CN 106681086 B CN106681086 B CN 106681086B
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- inner frame
- outer frame
- oscillating mirror
- frame
- coil winding
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
Abstract
The invention discloses a support of an oscillating mirror, the oscillating mirror and a projector, wherein the support of the oscillating mirror comprises: an outer frame; the inner frame is arranged in the outer frame and is rotationally connected with the outer frame, and the inner frame is used for mounting the lens of the oscillating mirror; the magnetic strip group is arranged on the outer frame; and the coil winding is wound on the inner frame along the circumferential direction of the inner frame, and the coil winding drives the inner frame to rotate relative to the outer frame when being electrified. So set up, saved the use of motor for the installation space that the oscillating mirror occupy is littleer, and then is favorable to dwindling the volume of projecting apparatus.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a support of an oscillating mirror, the oscillating mirror and a projector.
Background
The oscillating mirror is applied to a projector and is arranged between a display chip and a lens of the projector. The display chip and the lens are provided with a prism, and the oscillating mirror can also be arranged between the prism and the display chip or between the lens and the prism. The oscillating mirror swings back and forth at high frequency when the projector performs projection work, so that light emitted from a display chip or reflected by a prism deflects at a tiny angle after passing through the oscillating mirror, a projected source 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 source image, and pixels of the new image are 2 times of the source image.
The swing of the existing oscillating mirror is realized by the driving of a motor, namely when the oscillating mirror is installed in a shell of a projector, the motor is also needed to be installed in the shell of the projector to drive the oscillating mirror to swing in a reciprocating manner.
Disclosure of Invention
The invention mainly aims to provide a bracket of an oscillating mirror, aiming at reducing the volume of the oscillating mirror.
In order to achieve the above object, the present invention provides a support for an oscillating mirror, for mounting a lens of the oscillating mirror, the support for the oscillating mirror comprising:
an outer frame;
the inner frame is arranged in the outer frame and is rotationally connected with the outer frame, and the inner frame is used for mounting the lens of the oscillating mirror;
the magnetic strip group is arranged on the outer frame; and the number of the first and second groups,
and the coil winding is wound on the inner frame along the circumferential direction of the inner frame, and drives the inner frame to rotate relative to the outer frame when the coil winding is electrified.
Preferably, the oscillating mirror further comprises a first elastic arm, and one side of the inner frame is rotatably connected with the outer frame through the first elastic arm.
Preferably, the oscillating mirror further includes a second elastic arm, one of two opposite sides of the inner frame is rotatably connected to the outer frame through the first elastic arm, and the other opposite side is rotatably connected to the outer frame through the second elastic arm.
Preferably, the first elastic arm includes a first fixing portion fixedly connected to the inner frame, a second fixing portion fixedly connected to the outer frame, and a first connecting portion connecting the first fixing portion and the second fixing portion;
the second elastic arm comprises a third fixing part fixedly connected with the inner frame, a fourth fixing part fixedly connected with the outer frame and a second connecting part connecting the third fixing part and the fourth fixing part;
the plane where the first connecting portion is located and the plane where the second connecting portion is located are perpendicular to each other.
Preferably, the outer surface of the inner frame is concavely provided with an annular winding groove extending along the circumferential direction of the inner frame, and the coil winding is wound in the annular winding groove.
Preferably, a baffle is arranged at one side end of the inner frame, and the middle part of the baffle penetrates through to form a window for exposing the lens.
Preferably, the magnetic strip group comprises a plurality of magnetic strips, a plurality of mounting grooves arranged along the circumferential direction of the outer frame are concavely arranged on the inner surface of the outer frame, and each magnetic strip is embedded in one mounting groove.
Preferably, one of the two opposite sides of the outer frame is provided with a through hole in a penetrating manner, and the other side of the outer frame is provided with a kidney-shaped hole in a penetrating manner.
Preferably, the outer frame and the inner frame are arranged in an axisymmetric manner, and the shape of the inner frame is the same as that of the outer frame.
The invention also provides an oscillating mirror, which comprises a lens and a bracket of the oscillating mirror, wherein the bracket of the oscillating mirror comprises:
an outer frame;
the inner frame is arranged in the outer frame and is rotationally connected with the outer frame, and the inner frame is used for mounting the lens;
the magnetic strip group is arranged on the outer frame; and the number of the first and second groups,
and the coil winding is wound on the inner frame along the circumferential direction of the inner frame, and drives the inner frame to rotate relative to the outer frame when the coil winding is electrified.
The invention further provides a projector, which comprises a controller and an oscillating mirror, wherein the oscillating mirror comprises a lens and a bracket of the oscillating mirror, and the bracket of the oscillating mirror comprises:
an outer frame;
the inner frame is arranged in the outer frame and is rotationally connected with the outer frame, and the inner frame is used for mounting the lens;
the magnetic strip group is arranged on the outer frame; and the number of the first and second groups,
the coil winding is wound on the inner frame along the circumferential direction of the inner frame, and the coil winding drives the inner frame to rotate relative to the outer frame when alternating current is conducted;
the controller is electrically connected with the coil winding and controls the coil winding to be electrified according to a preset period, so that the inner frame swings to and fro relative to the outer frame.
According to the invention, the magnetic strip group is arranged on the outer frame, the coil winding is wound on the inner frame along the circumferential direction of the inner frame, and the inner frame is arranged in the outer frame and is connected with the outer frame in a rotating manner. When the coil winding is electrified, the coil winding can generate torque and rotate under the action of a magnetic field generated by the magnetic strip group, the inner frame rotates together with the coil winding when the coil winding rotates, and the lens of the oscillating mirror mounted on the inner frame rotates along with the rotation of the inner frame. So set up, saved the use of motor for the installation space that the oscillating mirror occupy is littleer, and then is favorable to dwindling the volume of projecting apparatus.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an oscillating mirror according to an embodiment of the present invention;
FIG. 2 is an assembled view of the inner frame and coil winding of FIG. 1;
FIG. 3 is a schematic structural view of the inner frame of FIG. 1;
fig. 4 is a schematic structural diagram of the outer frame in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 100 | |
113 | Through |
|
| 10 | Support of oscillating |
114 | Waist- |
|
| 20 | |
15 | First |
|
| 11 | |
16 | Second |
|
| 12 | |
151 | First fixed part | |
| 13 | |
152 | Second |
|
| 14 | Coil winding | 153 | First connecting |
|
| 131 | |
161 | Third |
|
| 121 | |
162 | The |
|
| 111 | |
163 | Second connecting |
|
| 122 | |
151a | |
|
| | Window opening | 161a | |
|
| 112 | Mounting groove |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
To reduce the volume of the oscillating mirror, the present invention provides a new bracket of the oscillating mirror, please refer to fig. 1, and fig. 1 shows a schematic structural diagram of an embodiment of the oscillating mirror of the present invention.
The support 10 of the oscillating mirror 100 is used for mounting the lens 20 of the oscillating mirror 100, and comprises: outer frame 11, inner frame 12, magnetic stripe group 13 and coil winding 14.
The outer frame 11 is disposed in a ring shape, and it is understood that the outer frame 11 may be a closed ring shape or a ring shape with a gap left, and is not limited in this respect.
The inner frame 12 is installed in the outer frame 11 and rotatably connected to the outer frame 11. It is understood that the inner frame 12 can be rotatably connected to the outer frame 11 through two opposite ends thereof, and can also be rotatably connected to the outer frame 11 through a connecting member, which is not limited in this respect. The inner frame 12 is disposed in a ring shape, which may be a closed ring shape or a ring shape with a gap left, and is not limited in particular, and the inner frame 12 is mainly used for mounting the lens 20 of the oscillating mirror 100.
The magnetic stripe group 13 includes a plurality of magnetic stripes 131, and the plurality of magnetic stripes 131 are mounted to the housing 11 along a circumferential direction of the housing 11. It is understood that the plurality of magnetic strips 131 can be mounted to the inner surface of the outer frame 11 along the circumferential direction of the outer frame 11, or mounted to the outer surface of the outer frame 11 along the circumferential direction of the outer frame 11, or mounted to the inner surface and the outer surface of the outer frame 11 along the circumferential direction of the outer frame 11, and the mounting positions of the plurality of magnetic strips 131 of the magnetic strip group 13 are not particularly limited herein.
The coil winding 14 is mounted on the inner frame 12 (see fig. 2), the coil winding 14 is wound around the outer surface of the inner frame 12 along the circumferential direction of the inner frame 12, or is wound around the inner surface and the outer surface of the inner frame 12 along the circumferential direction of the inner frame 12, and the mounting position of the coil winding 14 is not particularly limited.
According to the magnetic effect of the current, when the coil winding 14 wound on the inner frame 12 is electrified, the coil winding 14 is subjected to the action of the magnetic field generated by the magnetic strip group 13 to generate a torque and rotate, the inner frame 12 rotates together when the coil winding 14 rotates, the lens 20 of the oscillating mirror 100 mounted on the inner frame 12 rotates along with the rotation of the inner frame 12, so that the projected source 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 source image, and the pixel of the new image is 2 times of the source image.
The coil winding 14 is electrically connected to a controller (not shown) of the projector, and the controller of the projector controls the coil winding 14 to apply an alternating voltage according to a predetermined cycle, thereby realizing the reciprocating swing of the inner frame 12 with respect to the outer frame 11.
In addition, the outer frame 11 and the inner frame 12 may be made of metal materials or plastics, preferably, the outer frame 11 and the inner frame 12 are both made of plastics, and the plastics have the characteristics of low density, insulation and the like, and the low density makes the mass of the inner frame 12 and the outer frame 11 small, so that on one hand, the weight of the support 10 of the oscillating mirror 100 is reduced conveniently, and on the other hand, the problem that the inner frame 12 cannot normally rotate due to the fact that the weight of the inner frame 12 is too large can be avoided. The insulation is such that the inner frame 12 and the outer frame 11 do not generate eddy current effects due to exposure to the high frequency transformed magnetic field.
The present invention is rotatably connected to the outer frame 11 by mounting the magnetic stripe groups 13 to the outer frame 11, winding the coil windings 14 around the inner frame 12 in the circumferential direction of the inner frame 12, and placing the inner frame 12 inside the outer frame 11. When the coil winding 14 is energized, the coil winding 14 is subjected to the magnetic field generated by the magnetic stripe group 13 to generate a torque and rotate, the inner frame 12 rotates together with the coil winding 14 while the lens 20 of the oscillating mirror 100 mounted to the inner frame 12 rotates with the rotation of the inner frame 12. With such an arrangement, the motor is omitted, so that the installation space occupied by the oscillating mirror 100 is smaller, and the reduction of the size of the projector is facilitated.
In an embodiment of the present invention, referring to fig. 2, an annular winding groove 121 extending along a circumferential direction of the inner frame 12 is recessed in an outer surface of the inner frame. Specifically, the annular winding groove 121 may be formed by a portion of the outer surface of the inner frame 12 being recessed, or may be defined by two annular ribs protruding from the outer surface of the inner frame 12, which is not specifically limited herein.
The coil winding 14 is wound in the annular winding groove 121, the coil winding 14 is formed by winding a copper wire, and it should be noted that the coil winding 14 may be formed by winding a copper wire in a loose winding manner or in a close winding manner, and is not limited specifically herein; the number of turns of the coil winding 14 may be set according to actual conditions, and the number of turns of the coil winding 14 is not particularly limited.
Because the coil winding 14 is formed by winding a copper wire, that is, when the coil winding 14 is wound, the copper wire only needs to be wound in the annular winding groove 121 along the circumferential direction of the inner frame 12, so that the arrangement is convenient for winding the copper wire in the annular winding groove 121, that is, the winding of the coil winding 14; on the other hand, the coil winding 14 can be prevented from protruding from the outer surface of the inner frame 12, so that the coil winding 14 is prevented from contacting the outer frame 11, and the inner frame 12 can normally rotate relative to the outer frame 11.
Further, the outer frame 11 is provided with two pads 111, the coil winding 14 has two terminals, and the two terminals are respectively fixed to one pad 111 by welding, and the lead of the power supply circuit of the projector can also be fixedly connected to the two pads 111 by welding. Thus, the coil winding 14 is conveniently electrically connected with the power supply circuit of the projector.
It should be noted that the angle at which the coil winding 14 drives the inner frame 12 to swing back and forth relative to the outer frame 11 is extremely small, and in the embodiment of the present invention, the angle range at which the coil winding 14 drives the inner frame 12 to swing relative to the outer frame 11 is 0 to 0.2 °, that is, the maximum angle of clockwise rotation of the inner frame 12 and the maximum angle of counterclockwise rotation of the inner frame 12 are both 0.2 °. Since the angle at which the inner frame 12 reciprocates with respect to the outer frame 11 is extremely small, the position of the coil winding 14 hardly changes when the inner frame 12 reciprocates with respect to the outer frame 11. When the terminals of the coil winding 14 are long enough, the terminals of the coil winding 14 are not pulled apart by the reciprocating oscillation of the coil winding 14.
In the embodiment of the present invention, referring to fig. 3, a baffle 122 is disposed at one side end of the inner frame 12, that is, one of two opposite opening ends of the inner frame 12 is blocked by a baffle 122, and a window 122a for exposing the lens 20 is formed through the baffle 122.
This baffle 122 can play spacing effect when lens 20 is installed to inside casing 12, namely when installing this lens 20, only need to place in inside casing 12 from the open end of inside casing 12 to compress tightly this lens 20, so that lens 20 and baffle 122 each other the butt can, so set up, make things convenient for the equipment of support 10 of oscillating mirror 100 and the lens 20 of oscillating mirror 100.
Obviously, other positioning structures may be provided on the inner frame 12 to position the lenses 20, such as a plurality of bosses spaced along the circumference of the inner frame 12 on the inner surface of the inner frame 12, or annular positioning ribs extending along the circumference of the inner frame 12 on the inner surface of the inner frame 12, etc., which are not limited herein.
Further, in order to mount the lens 20 into the inner frame 12 more firmly, glue may be applied to the peripheral edge of the lens 20 and the inner surface of the inner frame 12, so that when the lens 20 is mounted into the inner frame 12, the peripheral edge of the lens 20 and the inner surface of the inner frame 12 may be fixed by the glue.
It will be appreciated that in order to more securely mount lens 20 within inner frame 12, a cover may be attached to the side of inner frame 12 not provided with baffles 122, and that the cover, baffles 122 and inner frame 12 cooperate to restrain lens 20 in all directions. The cover plate is provided with a window 122a through which the mirror 20 is exposed, so as to ensure that light emitted from the display chip of the projector or reflected by the prism can pass through the mirror 20 of the oscillating mirror 100.
In the embodiment of the present invention, referring to fig. 4, a plurality of mounting grooves 112 arranged along the circumferential direction are concavely provided on the inner surface of the outer frame 11, and each mounting groove 112 may be formed by a concave portion of the inner surface of the outer frame 11 or defined by a plurality of convex ribs convexly provided on the inner surface of the outer frame 11. Each magnetic strip 131 of the magnetic strip group 13 is correspondingly embedded in one installation slot 112.
It should be noted that the thickness of each magnetic stripe 131 is substantially equal to the thickness of the mounting slot 112, that is, when the magnetic stripe 131 is mounted in the mounting slot 112, two opposite sides of the magnetic stripe 131 are clamped by two opposite slot walls of the mounting slot 112, so that the fixed mounting of the plurality of magnetic stripes 131 of the magnetic stripe group 13 is facilitated. In addition, when the magnetic stripe 131 is embedded in the mounting groove 112, the surface of the magnetic stripe 131 exposed from the mounting groove 112 is coplanar with the inner surface of the outer frame 11, so that the problem that the magnetic stripe 131 protrudes out of the inner surface of the outer frame 11 to further influence the normal rotation of the inner frame 12 is avoided.
Since the space inside the outer frame 11 is relatively small, in order to facilitate the taking and placing of the magnetic stripe 131, a groove wall of each mounting groove 112 is disposed to penetrate through the outer frame 11, and preferably, a groove wall of each mounting groove 112 adjacent to the opening end of the outer frame 11 is disposed to penetrate through. When the magnetic strip 131 is installed, the magnetic strip 131 can be installed in the installation groove 112 along the direction that the two open ends of the outer frame 11 are close to each other; when the magnetic strip 131 is taken out, the magnetic strip 131 can be taken out from the mounting groove 112 along the direction that the two open ends are away from each other. So set up, avoided because of the inside space undersize of frame 11, and lead to the inconvenient problem of magnetic stripe 131 installation to take place.
In order to enable the magnetic strip 131 to be more firmly installed in the installation groove 112, glue can be further coated on the surface of the magnetic strip 131 and the wall of the installation groove 112, and when the magnetic strip 131 is installed in the installation groove 112, the magnetic strip 131 can be further fixed to the wall of the installation groove 112 through bonding with the glue.
The oscillating mirror 100 is installed between a display chip and a lens of the projector, and a prism is provided between the display chip and the lens, or the oscillating mirror may be installed between the prism and the display chip or between the lens and the prism. Which is connected and fixed to the housing of the projector through the outer frame 11 of the support 10 of the oscillating mirror 100. In the embodiment of the present invention, one of the two opposite sides of the outer frame 11 has a through hole 113 and the other side has a kidney-shaped hole 114. When the oscillating mirror 100 is fixed in the housing of the projector, a screw may be first inserted through the through hole 113 of the outer frame 11 and then locked to the housing of the projector, so as to position the outer frame 11 in the housing of the projector; and then locked to the housing of the projector after a screw is passed through the kidney-shaped hole 114 in the outer frame 11. Because waist type hole 114 has certain length for the screw can be along waist type hole 114's length direction adjustment position, and then can avoid effectively causing the problem emergence that through-hole 113 and waist type hole 114 on the frame 11 can not counterpoint with two screw holes on the casing of projecting apparatus because of the relative position of two screw holes on the casing of projecting apparatus appears the deviation, has been convenient for frame 11 and projecting apparatus casing's fixed connection.
Obviously, the waist-shaped hole 114 can also be opened on the housing of the projector, and the function of the waist-shaped hole 114 will not be described herein.
In order to facilitate the rotation of the inner frame 12 relative to the outer frame 11, the outer frame 11 and the inner frame 12 are disposed in axial symmetry, and the shape of the inner frame 12 is the same as that of the outer frame 11. Specifically, the inner frame 12 and the outer frame 11 may be configured as a square, a regular polygon, or the like, which is not limited herein. When the inner frame 12 is installed in the outer frame 11, it is only necessary to position the inner frame 12 at both ends of the symmetry axis thereof or to position the inner frame 12 at one side of the symmetry axis thereof to be rotatably connected to the outer frame 11. With this arrangement, the outer frame 11 can be prevented from interfering with the rotation of the inner frame 12, and the inner frame 12 can be ensured to rotate relative to the outer frame 11 by the driving of the coil windings 14.
In an embodiment of the present invention, referring to fig. 1, the support 10 of the oscillating mirror 100 further includes a first elastic arm 15, one end of the first elastic arm 15 is fixedly connected to the inner frame 12, and the other end of the first elastic arm 15 is fixedly connected to the outer frame 11, so that the inner frame 12 can rotate around the first elastic arm 15 relative to the outer frame 11.
Specifically, one end of the first elastic arm 15 is fixedly connected to one side of the inner frame 12, and the other end of the first elastic arm 15 is fixedly connected to the corresponding side of the outer frame 11, or one end of the first elastic arm 15 is connected to a corner of the inner frame 12, and the other end of the first elastic arm 15 is connected to a corner of the outer frame 11.
Because the first elastic arm 15 is made of elastic material, it can elastically deform when stressed, that is, the inner frame 12 can swing around the first elastic arm 15 in a reciprocating manner under the driving of the coil winding 14; and when the coil winding 14 is powered off, the inner frame 12 still swings back and forth relative to the outer frame 11 under the action of inertia, so that the inner frame 12 can swing back and forth relative to the outer frame 11 as long as the coil winding 14 is periodically controlled to be powered on, and the energy saving loss is facilitated.
Further, in order to enable the inner frame 12 to swing more smoothly with respect to the outer frame 11, the support 10 of the oscillating mirror 100 is further provided with a second elastic arm 16, one of two opposite sides of the inner frame 12 is fixedly connected to one side of the outer frame 11 by a first elastic arm 15, and the other of the two opposite sides of the inner frame 12 is fixedly connected to the other side of the outer frame 11 by a second elastic arm 16. Preferably, one of the opposite ends of the inner frame 12 on the axis of symmetry is connected to the outer frame 11 by a first resilient arm 15, and the other end is pivotally connected to the outer frame 11 by a second resilient arm 16.
Because the two opposite ends of the inner frame 12 are fixedly connected with the outer frame 11, the inner frame 12 can only swing back and forth along the connection line of the first elastic arm 15 and the second elastic arm 16 under the driving of the coil winding 14, and further the problem that the inner frame 12 cannot swing normally due to the fact that the inner frame 12 swings in other directions and contacts with the outer frame 11 is avoided.
The first elastic arm 15 includes a first fixing portion 151 fixedly connected to the inner frame 12, a second fixing portion 152 fixedly connected to the outer frame 11, and a first connecting portion 153 connecting the first fixing portion 151 and the second fixing portion 152; the second elastic arm 16 includes a third fixing portion 161 fixedly connected to the inner frame 12, a fourth fixing portion 162 fixedly connected to the outer frame 11, and a second connecting portion 163 connecting the third fixing portion 161 and the fourth fixing portion 162. Specifically, the first fixing portion 151 and the third fixing portion 161 are fixed to the inner frame 12 by screws, and the second fixing portion 152 and the fourth fixing portion 162 are fixed to the outer frame 11 by screws.
The first fixing portion 151 and the third fixing portion 161 are connected to the side end of the inner frame 12 opposite to the baffle 122, and are respectively disposed on two opposite sides. And the end of the first fixing portion 151 away from the first connecting portion 153 is provided with a first jaw 151a, and the end of the third fixing portion 161 away from the second connecting portion 163 is provided with a second jaw 161 a; the first claw 151a and the second claw 161a are both abutted against the lens 20 of the oscillating mirror 100 to limit the lens 20 mounted in the inner frame 12. With the arrangement, the lens 20 of the oscillating mirror 100 is more stably arranged in the inner frame 12, and the lens 20 of the oscillating mirror 100 is prevented from falling off the inner frame 12 when the inner frame 12 swings back and forth relative to the outer frame 11.
In order to facilitate the inner frame 12 to swing back and forth relative to the outer frame 11, the first connecting portions 153 and the second connecting portions 163 are bent in different directions, and the plane on which the first connecting portions 153 are located and the plane on which the second connecting portions 163 are located are perpendicular to each other. Preferably, the plane of the first connecting portion 153 is parallel to the plane of the lens 20, and the plane of the second connecting portion 163 is perpendicular to the plane of the lens 20. With this arrangement, the torque required for rotation of the inner frame 12 can be reduced, and the number of turns of the coil winding 14 on the inner frame 12 can be reduced.
Referring to fig. 1, the oscillating mirror 100 includes a lens 20 and a support 10 of the oscillating mirror, and the specific structure of the support 10 of the oscillating mirror refers to the above embodiments, and since the oscillating mirror adopts all technical solutions of all the above embodiments, the oscillating mirror at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. Wherein, the lens 20 is fixedly arranged in the inner frame 12 of the bracket 10 of the oscillating mirror.
The present invention further provides a projector, which includes a controller and an oscillating mirror 100, and the specific structure of the oscillating mirror 100 refers to the above embodiments, and since the projector adopts all technical solutions of all the above embodiments, the projector at least has all beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. The coil winding 14 of the oscillating mirror 100 is electrically connected to a controller of the projector, and the controller of the projector controls the coil winding 14 to be energized according to a preset period, so that the inner frame 12 of the oscillating mirror 100 swings back and forth relative to the outer frame 11.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A mount for an oscillating mirror of a projector for mounting a lens of the oscillating mirror, comprising:
the inner surface of the outer frame is concavely provided with a plurality of mounting grooves which are distributed along the circumferential direction of the outer frame;
the inner frame is arranged in the outer frame and is rotationally connected with the outer frame, the inner frame is used for mounting lenses of the oscillating mirror, and the outer surface of the inner frame is concavely provided with an annular winding groove extending along the circumferential direction of the inner frame;
the magnetic strip group comprises a plurality of magnetic strips, and each magnetic strip is embedded in one mounting groove; and the number of the first and second groups,
the coil winding is wound in the annular winding groove, and alternating voltage is applied to the coil winding according to a preset period so as to drive the inner frame to swing in a reciprocating mode relative to the outer frame;
a baffle is arranged at one side end of the inner frame, the middle part of the baffle penetrates through the inner frame to form a window for exposing the lens, a cover plate is arranged at one side end of the inner frame, which is not provided with the baffle, and the cover plate, the baffle and the inner frame act together to restrain the lens in all directions;
one of the two opposite sides of the outer frame is provided with a through hole in a penetrating way, and the other side of the outer frame is provided with a waist-shaped hole in a penetrating way.
2. The oscillating mirror bracket according to claim 1, wherein the oscillating mirror further comprises a first elastic arm, and one side of the inner frame is rotatably connected to the outer frame through the first elastic arm.
3. An oscillating mirror support as claimed in claim 2, wherein said oscillating mirror further comprises a second elastic arm, one of two opposite sides of said inner frame is rotatably connected to said outer frame through said first elastic arm, and the other opposite side is rotatably connected to said outer frame through said second elastic arm.
4. The mount for an oscillating mirror according to claim 3, wherein the first elastic arm includes a first fixing portion fixedly connected to the inner frame, a second fixing portion fixedly connected to the outer frame, and a first connecting portion connecting the first fixing portion and the second fixing portion;
the second elastic arm comprises a third fixing part fixedly connected with the inner frame, a fourth fixing part fixedly connected with the outer frame and a second connecting part connecting the third fixing part and the fourth fixing part;
the plane where the first connecting portion is located and the plane where the second connecting portion is located are perpendicular to each other.
5. A holder for a galvanometer mirror according to any one of claims 1 to 4, wherein the outer frame and the inner frame are disposed axisymmetrically, and the shape of the inner frame is the same as that of the outer frame.
6. An oscillating mirror, comprising a lens and a frame of the oscillating mirror according to any one of claims 1 to 5, wherein the lens is fixedly mounted on an inner frame of the oscillating mirror.
7. A projector, comprising a controller and the oscillating mirror of claim 6, wherein the controller is electrically connected to the coil winding of the oscillating mirror and controls the coil winding to be energized according to a predetermined period, so that the inner frame of the oscillating mirror oscillates in a reciprocating manner with respect to the outer frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611250887.5A CN106681086B (en) | 2016-12-29 | 2016-12-29 | Support of oscillating mirror, oscillating mirror and projector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611250887.5A CN106681086B (en) | 2016-12-29 | 2016-12-29 | Support of oscillating mirror, oscillating mirror and projector |
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| Publication Number | Publication Date |
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| CN106681086A CN106681086A (en) | 2017-05-17 |
| CN106681086B true CN106681086B (en) | 2020-11-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110012275B (en) * | 2019-04-03 | 2021-03-30 | 苏州佳世达光电有限公司 | Bidirectional lens adjusting module and projector using same |
| CN113219647B (en) * | 2020-02-05 | 2023-06-13 | 中强光电股份有限公司 | Optical module and projection device |
| CN115718399B (en) * | 2022-11-17 | 2023-11-07 | 东莞市维斗科技股份有限公司 | Novel vibrating mirror |
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| KR20050057767A (en) * | 2003-12-11 | 2005-06-16 | 엘지전자 주식회사 | Method and apparatus for inproving resolution and display apparatus thereof |
| KR20050118510A (en) * | 2004-06-14 | 2005-12-19 | 엘지전자 주식회사 | Apparatus for improving resolution of display apparatus and method thereof |
| CN201780376U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气集团公司 | Novel seismic detector |
| TWI584045B (en) * | 2015-01-19 | 2017-05-21 | 揚明光學股份有限公司 | Imaging displacement module |
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