CN115437204B - Reflection device and projection equipment - Google Patents
Reflection device and projection equipment Download PDFInfo
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- CN115437204B CN115437204B CN202211142243.XA CN202211142243A CN115437204B CN 115437204 B CN115437204 B CN 115437204B CN 202211142243 A CN202211142243 A CN 202211142243A CN 115437204 B CN115437204 B CN 115437204B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- PSVBHJWAIYBPRO-UHFFFAOYSA-N lithium;niobium(5+);oxygen(2-) Chemical compound [Li+].[O-2].[O-2].[O-2].[Nb+5] PSVBHJWAIYBPRO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- G03B21/28—Reflectors in projection beam
-
- 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
- G02B26/0816—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 reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0977—Reflective elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
本申请提供了一种反射装置，包括固定结构、振动组件以及第一反射件；振动组件包括第一弹性电极、第二弹性电极和压电元件，第一弹性电极与第二弹性电极间隔设于固定结构，压电元件沿Z轴抵接于第一弹性电极和第二弹性电极之间，并能够在第一弹性电极和第二弹性电极配合产生的电场的作用下绕X轴摆动，其中第一弹性电极和第二弹性电极电连接于外部交流电源；第一反射件被配置为能够随压电元件、第一弹性电极或第二弹性电极活动，以调整第一反射件的反射方向和角度；本申请提供的反射装置包括反射装置和投影机本体，所述反射装置设于投影机本体，所述投影设备包括投影平面，所述投影平面用于接收从所述反射装置出射的光线，并进行投影。
The present application provides a reflection device, comprising a fixed structure, a vibration component and a first reflection member; the vibration component comprises a first elastic electrode, a second elastic electrode and a piezoelectric element, the first elastic electrode and the second elastic electrode are arranged in the fixed structure at intervals, the piezoelectric element abuts between the first elastic electrode and the second elastic electrode along the Z axis, and can swing around the X axis under the action of the electric field generated by the first elastic electrode and the second elastic electrode, wherein the first elastic electrode and the second elastic electrode are electrically connected to an external AC power supply; the first reflection member is configured to be able to move with the piezoelectric element, the first elastic electrode or the second elastic electrode to adjust the reflection direction and angle of the first reflection member; the reflection device provided by the present application comprises a reflection device and a projector body, the reflection device is arranged on the projector body, and the projection device comprises a projection plane, and the projection plane is used to receive light emitted from the reflection device and perform projection.
Description
Technical Field
The application belongs to the technical field of projection, and particularly relates to a reflecting device and projection equipment.
Background
The projector generally adopts a laser light source for projection, one laser light source can be divided into two types, namely single-color laser light and three-color laser light, and the laser light source is a wire harness light source, so that a single-beam laser light source needs to be diffused for projection, and when the laser light source is not diffused sufficiently, a frame is easy to generate dazzling patches, and the quality of a projection frame is poor.
Disclosure of Invention
The embodiment of the application aims to provide a reflecting device and projection equipment so as to solve the technical problem of insufficient light source diffusion in the prior art.
In order to achieve the above purpose, the application adopts the technical scheme that the reflecting device comprises:
a fixed structure;
The vibration assembly comprises a first elastic electrode, a second elastic electrode and a piezoelectric element, wherein the first elastic electrode and the second elastic electrode are arranged on the fixed structure at intervals, and the piezoelectric element is abutted between the first elastic electrode and the second elastic electrode along the Z axis and can swing around the X axis under the action of an electric field generated by the cooperation of the first elastic electrode and the second elastic electrode;
And the first reflecting piece is configured to move along with the piezoelectric element, the first elastic electrode and/or the second elastic electrode so as to adjust the reflecting direction and angle of the first reflecting piece.
Optionally, the piezoelectric element is configured to extend out of two opposite sides of the first elastic electrode and the second elastic electrode along the Y axis, the fixing structure is provided with a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are respectively arranged on two opposite sides of the piezoelectric element along the Z axis, the first limiting portion and the second limiting portion are distributed at intervals along the Y axis, and are used for respectively limiting two opposite sides of the piezoelectric element extending out of the first elastic electrode and the second elastic electrode along the Y axis.
Optionally, the vibration assembly includes three or more elastic electrodes distributed at intervals along the Z axis, the piezoelectric element is abutted between any two adjacent elastic electrodes, and the first elastic electrode and the second elastic electrode are respectively used as any two adjacent elastic electrodes.
Optionally, the first elastic electrode includes first shell fragment and first elastic part, first elastic part connect in first shell fragment with between the fixed knot constructs, the second elastic electrode includes second shell fragment and second elastic part, the second elastic part connect in the second shell fragment with between the fixed knot constructs, and with first elastic part interval sets up, piezoelectric element along Z axle butt in first shell fragment with between the second shell fragment.
Optionally, the first elastic portion and the second elastic portion are respectively disposed outside two opposite ends of the piezoelectric element along the X axis, or the first elastic portion and the second elastic portion are respectively disposed outside two opposite sides of the piezoelectric element along the Z axis.
Optionally, the first elastic portion and the second elastic portion are respectively disposed outside two opposite ends of the piezoelectric element along the X axis, and the first elastic portion and the second elastic portion are both curved, and the bending direction of the first elastic portion is perpendicular to the Z axis and/or the bending direction of the second elastic portion is perpendicular to the Z axis.
Optionally, the first elastic portion is connected to any one of opposite ends of the first elastic piece along the Y axis, and the second elastic portion is connected to any one of opposite ends of the second elastic piece along the Y axis.
Optionally, the first elastic electrode further includes a first fixing portion, where the first fixing portion is connected to an end of the first elastic portion, which is far away from the first elastic sheet, and is connected to the fixing structure;
and/or, the second elastic electrode further comprises a second fixing part, and the second fixing part is connected to one end of the second elastic part far away from the second elastic piece and is connected to the fixing structure.
Optionally, the first reflecting piece is arranged on one side of the piezoelectric element along the Z axis, or the first reflecting piece is arranged on two opposite sides of the piezoelectric element along the Z axis.
Optionally, a movable cavity is arranged in the fixed structure, the movable cavity is provided with an opening, the piezoelectric element, the first reflecting piece, at least part of the first elastic electrode and at least part of the second elastic electrode are all positioned in the movable cavity, and the first reflecting piece is opposite to the opening and can receive or reflect light through the opening.
The application also provides projection equipment which comprises the reflecting device and a projector body, wherein the reflecting device is arranged on the projector body, and the projection equipment comprises a projection plane which is used for receiving and projecting the light rays emitted from the reflecting device.
Optionally, the number of the reflecting devices is multiple, the reflecting devices are distributed at intervals, and a second reflecting piece is arranged between any two adjacent reflecting devices and configured to reflect the light rays emitted by the first reflecting piece of one reflecting device to the first reflecting piece of the other reflecting device;
Or any adjacent three reflecting devices are arranged at intervals, any one of the reflecting devices is positioned between the light emergent sides of the other two reflecting devices, and any one of the reflecting devices is configured to reflect the light signals emitted by the first reflecting piece of one of the other two reflecting devices to the first reflecting piece of the other reflecting device.
Optionally, the oscillation axes of the piezoelectric elements of two adjacent reflection devices are parallel, or form a preset included angle.
Optionally, the light received by the projection plane forms an included angle smaller than 90 ° with the projection plane.
The reflecting device provided by the application has the beneficial effects that:
According to the reflection device, the piezoelectric element continuously swings around the X axis by utilizing the alternating electric field generated by the first elastic electrode and the second elastic electrode and utilizing the inverse piezoelectric effect principle of the piezoelectric material, the piezoelectric element can drive the first reflection piece to continuously swing around the X axis, so that the incident point of incident light on the first reflection piece is continuously changed, the incident angle of the incident light can be changed, the reflection direction of the reflected light can be changed, and the light diffusion is realized, meanwhile, the electric fields generated by the first elastic electrode and the second elastic electrode lead the piezoelectric element to repeatedly swing, the first elastic electrode and the second elastic electrode both store force in the swing process of the piezoelectric element, and the elastic force of the first elastic electrode and the second elastic electrode can drive the piezoelectric element to rapidly swing in the swing direction of the piezoelectric element, so that the swing frequency of the piezoelectric element is accelerated, the light irradiated on the first reflection piece is fully diffused, and the phenomenon of flare plaque on a picture is prevented.
The projection equipment provided by the application has the beneficial effects that:
according to the projection equipment provided by the application, the projection light of the projector body is diffused through the reflecting device, so that the projection light is fully diffused, and the projection picture is prevented from generating dazzling spots.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a reflective device according to a first embodiment of the present application;
FIG. 2 is a perspective view of a first internal structure of a reflective device according to a first embodiment of the present application;
FIG. 3 is a light path diagram of a reflection device according to a first embodiment of the present application;
FIG. 4 is a cross-sectional view of a reflective device according to a first embodiment of the present application;
FIG. 5 is a perspective view showing a second internal structure of a reflection apparatus according to a first embodiment of the present application;
FIG. 6 is a perspective view of a projection apparatus according to a first embodiment of the present application;
FIG. 7 is a first light path diagram of a projection apparatus according to a first embodiment of the present application;
FIG. 8 is a second light path diagram of a projection apparatus according to a first embodiment of the present application;
FIG. 9 is a perspective view of a projection device according to a fifth embodiment of the present application;
FIG. 10is a side view of a projection device according to a fifth embodiment of the present application;
FIG. 11 is a top view of a projection apparatus according to a fifth embodiment of the present application;
Fig. 12 is a partial enlarged view at a in fig. 11.
Wherein, each reference sign in the figure:
1. The device comprises a fixed structure, a first limiting part, a second limiting part, a movable cavity, 14, an opening, 15, a shell, 16, a cover body, 17 and a transparent layer, wherein the fixed structure is arranged on the movable cavity;
2. Vibration component, 21, first elastic electrode, 211, first spring piece, 212, first elastic part, 213, first fixing part, 22, second elastic electrode, 221, second spring piece, 222, second elastic part, 223, second fixing part, 23, piezoelectric element, 231, first end, 232, second end;
3. a first reflecting member;
4. A projector body;
5. A projection plane;
6. and a second reflecting member.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Based on this, the embodiment of the present invention provides a reflection device capable of sufficiently diffusing light by the combined action of the piezoelectric element 23 and the elastic electrode, and a projection apparatus.
Example 1
As shown in fig. 1 to 2, an embodiment of the present application provides a reflection device, which includes a fixing structure 1, a vibration assembly 2 and a first reflection member 3, wherein the vibration assembly 2 includes a first elastic electrode 21, a second elastic electrode 22 and a piezoelectric element 23, the first elastic electrode 21 and the second elastic electrode 22 are spaced from each other and disposed on the fixing structure 1, the piezoelectric element 23 is abutted between the first elastic electrode 21 and the second elastic electrode 22 along a Z-axis and is capable of swinging around an X-axis under the action of an electric field generated by cooperation of the first elastic electrode 21 and the second elastic electrode 22, and the first reflection member 3 is configured to move along with the piezoelectric element 23, the first elastic electrode 21 or the second elastic electrode 22 so as to adjust the reflection direction and angle of the first reflection member 3.
The X-axis referred to above and below refers to the bidirectional direction of the X-axis defined by the space coordinate system, the Y-axis referred to below refers to the bidirectional direction of the Y-axis defined by the space coordinate system, and the Z-axis referred to above and below refers to the bidirectional direction of the Z-axis defined by the space coordinate system.
Specifically, the piezoelectric element 23 is made of a piezoelectric material, and when the reflection device is used, an external ac power supply supplies ac power to the first elastic electrode 21 and the second elastic electrode 22, and an alternating voltage can be generated on the first elastic electrode 21 and the second elastic electrode 22, so that an alternating electric field is formed between the first elastic electrode 21 and the second elastic electrode 22, positive and negative charges in the piezoelectric material are separated from each other by the action of an electric field force by utilizing the principle of the inverse piezoelectric effect of the piezoelectric material, so that the piezoelectric material generates spontaneous strain, and simultaneously, by utilizing the characteristic that the voltage of the first elastic electrode 21 and the second elastic electrode 22 is continuously changed, the polarization direction between the first elastic electrode 21 and the second elastic electrode 22 can be changed, so that the piezoelectric element 23 can be contracted or expanded along the Z axis. The piezoelectric element 23 can be made to oscillate about the X-axis by cooperation with the fixed structure 1 while the piezoelectric element 23 is contracted or expanded along the Z-axis.
In this embodiment, as shown in fig. 2, the first reflecting member 3 is disposed on the surface of the piezoelectric element 23, the piezoelectric element 23 swings around the X axis and the piezoelectric element 23 can drive the first reflecting member 3 to swing around the X axis simultaneously, besides, the piezoelectric element 23 is abutted between the first elastic electrode 21 and the second elastic electrode 22, and the first elastic electrode 21 and the second elastic electrode 22 accumulate force simultaneously while the piezoelectric element 23 swings, otherwise, in the swinging process of the piezoelectric element 23, the elastic force of the first elastic electrode 21 and the second elastic electrode 22 acts on the piezoelectric element 23, so that the piezoelectric element 23 swings rapidly. Of course, in other embodiments, the first reflecting member 3 may be further disposed on the surface of the first elastic electrode 21 or the second elastic electrode 22, and since the piezoelectric element 23 is abutted between the first elastic electrode 21 and the second elastic electrode 22, when the piezoelectric element 23 swings around the X axis, the first elastic electrode 21 and the second elastic electrode 22 also swing along with the piezoelectric element 23, so that the first reflecting member 3 on the first elastic electrode 21 or the second elastic electrode 22 swings synchronously.
The light irradiates the first reflecting member 3 on the surface of the piezoelectric element 23, the first reflecting member 3 continuously swings under the driving of the piezoelectric element 23, so that the incident point and the incident angle of the light on the surface of the first reflecting member 3 continuously change, referring to fig. 3, for example, when the first reflecting member 3 swings between the first position and the second position, the incident point of the incident light L on the surface of the first reflecting member 3 is a, the incident angle is α, the reflected light L1 is formed by the reflection of the first reflecting member 3, when the first reflecting member 3 is in the second position, the incident point of the incident light L on the surface of the first reflecting member 3 is b, the incident angle is β, and the reflected light L2 is formed by the reflection of the first reflecting member 3, so that the incident point and the incident angle of the incident light L on the first reflecting member 3 continuously change due to the swing of the first reflecting member 3.
According to the reflection device provided by the embodiment of the application, the piezoelectric element 23 continuously swings around the X axis by utilizing the alternating electric field generated by the first elastic electrode 21 and the second elastic electrode 22 and the inverse piezoelectric effect principle of the piezoelectric material, the piezoelectric element 23 can drive the first reflection member 3 to continuously swing around the X axis, so that the incident point of incident light on the first reflection member 3 is continuously changed, the incident angle of the incident light can be changed, the reflection direction of the reflected light can be changed, and the light diffusion is realized, meanwhile, the electric field generated by the first elastic electrode 21 and the second elastic electrode 22 can cause the piezoelectric element 23 to repeatedly swing, the first elastic electrode 21 and the second elastic electrode 22 store forces in the swinging process of the piezoelectric element 23, and the elastic force of the first elastic electrode 21 and the second elastic electrode 22 can drive the piezoelectric element 23 to rapidly swing in the swinging process of the piezoelectric element 23, so that the swinging frequency of the piezoelectric element 23 is accelerated, the light irradiated on the first reflection member 3 is fully diffused, and the images are prevented from being flare-shaped.
Alternatively, the piezoelectric material is provided as a quartz crystal, lithium gallate, lithium germanate, titanium germanate, lithium iron transistor niobate, lithium tantalate, or piezoelectric ceramic.
Alternatively, the first reflecting member 3 is provided as an optical lens, a reflective plating layer, a reflective coating layer, or the like.
Specifically, when the first reflecting piece 3 is arranged as a reflecting coating, the first reflecting piece 3 is a reflecting film, the reflecting film comprises a metal reflecting film, a total dielectric reflecting film and a metal dielectric reflecting film, wherein the metal reflecting film is made of aluminum (Al), silver (Ag), gold (Au) and the like, the total dielectric reflecting film comprises amorphous silicon and the like, and when the first reflecting piece 3 is a reflecting coating, the reflecting coating comprises a solar shielding coating, a solar reflecting coating, a space heat insulation coating, an energy-saving heat preservation coating, an infrared camouflage cooling coating and the like.
In one embodiment of the present application, referring to fig. 1,2 and 4, the piezoelectric element 23 is configured to extend out of two opposite sides of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, the fixing structure 1 has a first limiting portion 11 and a second limiting portion 12, the first limiting portion 11 and the second limiting portion 12 are respectively disposed on two opposite sides of the piezoelectric element 23 along the Z axis, and the first limiting portion 11 and the second limiting portion 12 are spaced apart along the Y axis and are used for respectively limiting the two opposite sides of the piezoelectric element 23 extending out of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis.
Specifically, the piezoelectric element 23 is configured to extend along the Y axis beyond opposite sides of the first elastic electrode 21 and the second elastic electrode 22, wherein opposite ends of the piezoelectric element 23 extending along the Y axis beyond the first elastic electrode 21 and the second elastic electrode 22 are a first end 231 and a second end 232, respectively, the first elastic electrode 21 and the second elastic electrode 22 are disposed on opposite sides of the piezoelectric element 23 along the Z axis between the first end 231 and the second end 232, and the piezoelectric element 23 is configured to make the first end 231 abut against the first limiting portion 11 and the second end 232 abut against the second limiting portion 12 by cooperation between the first elastic electrode 21 and the second elastic electrode 22; for example, referring to fig. 4, when the piezoelectric element 23 expands, the thickness of the piezoelectric element 23 increases, the first end 231 of the piezoelectric element 23 swings substantially in a direction away from the first stopper 11 by the first stopper 11, and the second end 232 of the piezoelectric element 23 swings substantially in a direction away from the second stopper 12 by the second stopper 12, so that the piezoelectric element 23 can swing clockwise around the X axis, and at the same time, the first elastic electrode 21 and the second elastic electrode 22 elastically deform to store a force, and when the piezoelectric element 23 contracts, the thickness of the piezoelectric element 23 decreases, and the elastic forces of the first elastic electrode 21 and the second elastic electrode 22 act on the piezoelectric element 23 to cause the piezoelectric element 23 to swing counterclockwise around the X axis, so that the first end 231 of the piezoelectric element 23 abuts against the first stopper 11 and the second end 232 abuts against the second stopper 12.
By arranging the first limiting part 11 and the second limiting part 12 in this way, the piezoelectric element 23 can swing clockwise around the X axis when the piezoelectric element 23 expands, and the piezoelectric element 23 can swing anticlockwise around the X axis under the action of the first elastic electrode 21 and the second elastic electrode 22 when the piezoelectric element 23 contracts, so that the piezoelectric element 23 can swing repeatedly around the X axis, in addition, the first elastic electrode 21 and the second elastic electrode 22 can store force when the piezoelectric element 23 expands, and the elastic force is applied to the piezoelectric element 23 when the piezoelectric element 23 contracts, so that the piezoelectric element 23 can swing anticlockwise around the X axis, and the swing frequency of the piezoelectric element 23 can be accelerated.
In an embodiment of the present application, referring to fig. 1, 2 and 4, the first elastic electrode 21 includes a first elastic piece 211 and a first elastic portion 212, the first elastic portion 212 is connected between the first elastic piece 211 and the fixed structure 1, the second elastic electrode 22 includes a second elastic piece 221 and a second elastic portion 222, the second elastic portion 222 is connected between the second elastic piece 221 and the fixed structure 1, and is spaced from the first elastic portion 212, and the piezoelectric element 23 abuts between the first elastic piece 211 and the second elastic piece 221 along the Z-axis.
Specifically, the first elastic piece 211, the first elastic portion 212, the second elastic piece 221 and the second elastic portion 222 are all disposed in the fixed structure 1, the piezoelectric element 23 abuts between the first elastic piece 211 and the second elastic piece 221 along the Z axis, when the piezoelectric element 23 expands, the piezoelectric element 23 swings around the X axis, the piezoelectric element 23 can drive the first elastic piece 211 and the second elastic piece 221 to swing simultaneously in the swinging process, the first elastic piece 211 is connected to the first elastic piece 212, the second elastic piece 221 is connected to the second elastic piece 222, the first elastic piece 211 and the second elastic piece 221 can drive the first elastic piece 212 and the second elastic piece 222 to swing when swinging, the first elastic piece 211 and the second elastic piece 221 generate elastic deformation and store elastic force, and at the same time, the first elastic piece 212 and the second elastic piece 222 store elastic force, when the piezoelectric element 23 contracts, the first elastic piece 212 and the second elastic piece 222 generate elastic deformation, the first elastic piece 212 acts on the first elastic piece 211 and the second elastic piece 23, the second elastic piece 221 acts on the first elastic piece 23 and the second elastic piece 23, and the second elastic piece 222 acts on the first elastic piece 23, and the second elastic piece 23 in turn, and the first elastic piece 23 and the second elastic piece 222 act on the elastic piece 23 in a limited manner, and the elastic piece is made to stop the elastic piece 23.
In this way, when the piezoelectric element 23 expands, the first elastic piece 211, the first elastic portion 212, the second elastic piece 221 and the second elastic portion 222 can store elastic force, and when the piezoelectric element 23 contracts, the elastic force stored in the first elastic piece 211, the first elastic portion 212, the second elastic piece 221 and the second elastic portion 222 acts on the piezoelectric element 23, so that the piezoelectric element 23 swings rapidly around the X axis, and the swinging efficiency of the piezoelectric element 23 can be accelerated, and in addition, the piezoelectric element 23 can be always limited between the first limiting portion 11 and the second limiting portion 12 through the first elastic piece 211, the first elastic portion 212, the second elastic piece 221 and the second elastic portion 222.
In an embodiment of the present application, referring to fig. 2 and 4, the first elastic portion 212 and the second elastic portion 222 are respectively disposed outside two opposite ends of the piezoelectric element 23 along the X axis.
In this embodiment, the first elastic portion 212 and the second elastic portion 222 are provided as elastic sheets, and of course, in other embodiments, the first elastic portion 212 and the second elastic portion 222 may be provided as springs according to practical application requirements.
Specifically, the first elastic portion 212 and the second elastic portion 222 are respectively disposed at two opposite ends of the piezoelectric element 23 along the X axis, that is, the first elastic portion 211 and the second elastic portion 221 can cover the piezoelectric element 23 along the X axis of the piezoelectric element 23, when the piezoelectric element 23 expands, the first elastic portion 211, the first elastic portion 212, the second elastic portion 221 and the second elastic portion 222 store elastic forces, and when the piezoelectric element 23 contracts, the elastic forces of the first elastic portion 212 and the first elastic portion 211 act on the piezoelectric element 23 along the Z axis of the piezoelectric element 23, and the elastic forces of the second elastic portion 222 and the second elastic portion 221 act on the piezoelectric element 23 along the Z axis of the piezoelectric element 23.
Thus, when the first elastic portion 212 and the second elastic portion 222 are prevented from being arranged as elastic sheets, part of the structures of the first elastic portion 212 and the second elastic portion 222 are overlapped with the piezoelectric element 23, so that the lengths of the first elastic portion 212 and the second elastic portion 222 are shortened, and the stored elastic force of the first elastic portion 212 and the second elastic portion 222 is reduced, which is unfavorable for the rapid swing of the piezoelectric element 23.
In an embodiment of the present application, referring to fig. 2 and fig. 4 together, the first elastic portion 212 and the second elastic portion 222 are respectively disposed outside two opposite ends of the piezoelectric element 23 along the X axis, the first elastic portion 212 and the second elastic portion 222 are both curved, the bending direction of the first elastic portion 212 is perpendicular to the Z axis, and the bending direction of the second elastic portion 222 is perpendicular to the Z axis.
Specifically, the bending direction of the first elastic portion 212 is perpendicular to the Z axis, the bending direction of the second elastic portion 222 is perpendicular to the Z axis, when the piezoelectric element 23 expands, both the first elastic portion 212 and the second elastic portion 222 swing clockwise around the X axis while being elastically deformed, and when the piezoelectric element 23 contracts, both the second elastic portion 222 and the second elastic portion 222 swing counterclockwise around the X axis.
So configured, the bending direction of the first elastic portion 212 and the second elastic portion 222 is perpendicular to the Z-axis, as compared to the bending direction of the first elastic portion 212 and the second elastic portion 222 being perpendicular to the other directions, so that the bending direction of the first elastic portion 212 and the second elastic portion 222 is perpendicular to the thickness direction of the fixed structure 1, which helps to lengthen the lengths of the first elastic portion 212 and the second elastic portion 222, thereby helping to increase the stored elastic force of the first elastic portion 212 and the second elastic portion 222, and helping the first elastic portion 212 and the second elastic portion 222 to swing within the fixed structure 1.
In one embodiment of the present application, referring to fig. 5, the first elastic portion 212 is connected to any one of two opposite ends of the first elastic piece 211 along the Y axis, and the second elastic portion 222 is connected to any one of two opposite ends of the second elastic piece 221 along the Y axis.
It should be noted that, in the present embodiment, the first elastic portion 212 is connected to one end of the opposite ends of the first elastic piece 211 along the Y axis, which is far from the second limiting portion 12, and the second elastic portion 222 is connected to one end of the opposite ends of the second elastic piece 221 along the Y axis, which is far from the first limiting portion 11, however, in other embodiments, the first elastic portion 212 may be connected to one end of the opposite ends of the first elastic piece 211 along the Y axis, which is near to the second limiting portion 12, and the second elastic portion 222 may be connected to one end of the opposite ends of the second elastic piece 221 along the Y axis, which is near to the first limiting portion 11, according to practical requirements.
Specifically, in the present embodiment, the first elastic portion 212 is connected to one end of the opposite ends of the first elastic piece 211 along the Y axis, which is far away from the second limiting portion 12, and the second elastic portion 222 is connected to one end of the opposite ends of the second elastic piece 221 along the Y axis, which is far away from the first limiting portion 11, so that when the piezoelectric element 23 swings around the X axis, one end of the first elastic portion 212, which is close to the first elastic piece 211, and one end of the second elastic portion 222, which is close to the second elastic piece 221, are both located at the free end of the piezoelectric element 23, and therefore the piezoelectric element 23 can drive the first elastic portion 212 and the second elastic portion 222 to swing to a larger extent, so that the first elastic portion 212 and the second elastic portion 222 store a larger elastic force and act on the piezoelectric element 23 again when the piezoelectric element 23 contracts.
Thus, the first elastic portion 212 is connected to one end, far away from the second limiting portion 12, of the opposite ends of the first elastic piece 211 along the Y axis, and the second elastic portion 222 is connected to one end, far away from the first limiting portion 11, of the opposite ends of the second elastic piece 221 along the Y axis, so that the swing angle of the first elastic portion 212 and the second elastic portion 222, which can be generated in the fixed structure 1, reaches the maximum, and the first elastic portion 212 and the second elastic portion 222 can store the maximum elastic force in the fixed structure 1, and further can react to the piezoelectric element 23, so that the swing efficiency of the piezoelectric element 23 can be further accelerated.
In one embodiment of the present application, referring to fig. 1 and 2, the first reflecting member 3 is disposed on one side of the piezoelectric element 23 along the Z-axis.
In the present embodiment, the first reflecting member 3 is disposed on the side of the piezoelectric element 23 facing the second elastic sheet 221, and of course, in other embodiments, the first reflecting member 3 may also be disposed on the side of the piezoelectric element 23 facing the first elastic sheet 211 according to practical application requirements.
Specifically, wherein the piezoelectric element 23 is configured to protrude outside the opposite sides of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, the first reflecting member 3 is provided at the surface of the piezoelectric element 23 protruding outside the opposite sides of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, in this embodiment, the number of the first reflecting members 3 may be set to one or two, when the number of the first reflecting members 3 is set to one, the first reflecting member 3 is provided at any one of the opposite sides of the piezoelectric element 23 protruding outside the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, and when the number of the first reflecting members 3 is set to two, the two first reflecting members 3 are provided separately at the opposite sides of the piezoelectric element 23 protruding outside the first elastic electrode 21 and the second elastic electrode 22 along the Y axis.
The arrangement is that the first reflecting piece 3 is arranged on the surface of the piezoelectric element 23, and the piezoelectric element 23 can drive the first reflecting piece 3 to swing when swinging, so that the incidence point of incident light is continuously changed on the first reflecting piece 3, and the incidence angle of the incident light can be changed, thereby changing the reflection direction of the reflected light and realizing the diffusion of the light; in addition, when the incident light is provided in a plurality of bundles, the corresponding first reflecting member 3 can be provided on the surface of the piezoelectric element 23 according to the number of the incident light and the incident direction, contributing to the improvement of the convenience of use.
In one embodiment of the present application, referring to fig. 1, 2 and 4, a movable cavity 13 is disposed in the fixed structure 1, the movable cavity 13 has an opening 14, and the piezoelectric element 23, the first reflecting member 3, at least part of the first elastic electrode 21 and at least part of the second elastic electrode 22 are all located in the movable cavity 13, and the first reflecting member 3 is opposite to the opening 14 and can receive or reflect light through the opening 14.
Specifically, the first elastic electrode 21 and the second elastic electrode 22 are both disposed through the fixed structure 1, so that at least part of the first elastic electrode 21 is located in the movable cavity 13, the rest passes through the fixed structure 1 and is located outside the movable cavity 13, at least part of the second elastic electrode 22 is located in the movable cavity 13, the rest passes through the fixed structure 1 and is located outside the movable cavity 13, more specifically, the piezoelectric element 23 is located in the movable cavity 13 entirely and can swing around the X axis in the movable cavity 13, and the first elastic sheet 211 and the second elastic sheet 221 are respectively disposed on two opposite sides of the piezoelectric element 23 along the Z axis and can swing around the X axis along with the piezoelectric element 23.
In this way, the piezoelectric element 23, the first reflecting member 3, at least part of the first elastic electrode 21 and at least part of the second elastic electrode 22 are all located in the movable cavity 13, so that when the piezoelectric element 23 swings, at least part of the first reflecting member 3, at least part of the first elastic electrode 21 and at least part of the second elastic electrode 22 can swing in the movable cavity 13, interference of the fixed structure 1 on the piezoelectric element 23, the first reflecting member 3, at least part of the first elastic electrode 21 and at least part of the second elastic electrode 22 is prevented, and the situation that swing cannot occur is caused, in addition, incident light can irradiate the first reflecting member 3 through the opening 14 and emit reflected light through the opening 14.
Optionally, referring to fig. 1 and 2, the first elastic electrode 21 further includes a first fixing portion 213, the first fixing portion 213 is connected to an end of the first elastic portion 212 away from the first elastic piece 211 and is connected to the fixing structure 1, and the second elastic electrode 22 further includes a second fixing portion 223, the second fixing portion 223 is connected to an end of the second elastic portion 222 away from the second elastic piece 221 and is connected to the fixing structure 1.
Specifically, the first fixing portion 213 and the second fixing portion 223 are both connected to the fixing structure 1 and pass through the fixing structure 1, the first fixing portion 213 and the second fixing portion 223 are disposed at intervals, the first fixing portion 213 is disposed at an end outside the movable cavity 13, the second fixing portion 223 is disposed at an end outside the movable cavity 13 and is electrically connected to an external ac power supply, the first fixing portion 213 is disposed at an end inside the movable cavity 13 and an end of the first elastic portion 212 away from the first elastic portion 211 are fixedly connected, the second fixing portion 223 is disposed at an end inside the movable cavity 13 and an end of the second elastic portion 222 away from the second elastic portion 221 are fixedly connected, that is, the first elastic portion 212, the first elastic portion 211, the piezoelectric element 23, the second elastic portion 221, the second elastic portion 222 and the second fixing portion 223 are all located inside the movable cavity 13, and a loop can be formed.
In this way, the first elastic portion 212, the first elastic piece 211, the piezoelectric element 23, the second elastic piece 221, and the second elastic portion 222 can communicate with an external ac power supply by the first fixing portion 213 and the second fixing portion 223, and the first elastic portion 212 and the second elastic portion 222 can be fixed.
Optionally, the fixed structure 1 includes a housing 15 and a cover 16, where the cover 16 is detachably disposed on the housing 15 and encloses the housing 15 to form the movable cavity 13.
Specifically, the first fixing portion 213 and the second fixing portion 223 are disposed through the housing 15, that is, the first elastic portion 212, the first elastic piece 211, the piezoelectric element 23, the second elastic piece 221, and the second elastic portion 222 are all located in the movable cavity 13, and the first elastic portion 212, the first elastic piece 211, the piezoelectric element 23, the second elastic piece 221, and the second elastic portion 222 can swing around the X-axis in the movable cavity 13.
Optionally, referring to fig. 4, a transparent layer 17 is provided on the surface of the cover 16.
Wherein the transparent layer 17 is provided as transparent glass, transparent plastic, transparent PVC plate or the like.
So set up, light can shine first reflector 3 through transparent layer 17, at the reflection light of passing through transparent layer 17 outgoing of first reflector 3, can prevent through transparent layer 17 that casing 15 and lid 16 from enclosing movable chamber 13 and the outside space intercommunication that forms, help further extension piezoelectric element 23's life.
In an embodiment of the present application, referring to fig. 1 and 2 together, the vibration assembly 2 includes three or more elastic electrodes spaced apart along the Z-axis, wherein a piezoelectric element 23 is abutted between any two adjacent elastic electrodes, and the two adjacent elastic electrodes are a first elastic electrode 21 and a second elastic electrode 22 respectively.
Specifically, the vibration assembly 2 includes three or more elastic electrodes distributed at intervals along the Z-axis, that is, when the piezoelectric elements 23 are two or more, for example, when the piezoelectric elements 23 are two, the first elastic electrode 21 is disposed between the two piezoelectric elements 23, the second elastic electrode 22 is disposed on the side of the two piezoelectric elements 23 opposite to the first elastic electrode 21, and when the piezoelectric elements 23 are three, the thickness of the piezoelectric elements 23 is different by adjusting the number of the piezoelectric elements 23 and the number of the elastic electrodes, and when the angle of the piezoelectric elements 23 in the fixed structure 1 needs to be adjusted, the plurality of piezoelectric elements 23 are stacked between the first limiting portion 11 and the second limiting portion 12, and when the number of the piezoelectric elements 23 is adjusted, the thickness of the plurality of piezoelectric elements 23 is changed, for example, when the piezoelectric elements 23 are two, the two piezoelectric elements 23 are limited between the first limiting portion 11 and the second limiting portion 12, and when the piezoelectric elements 23 are three, the thickness of the three piezoelectric elements 23 is greater than the thickness of the three piezoelectric elements 23 is limited between the first limiting portion 11 and the second limiting portion 12.
So set up, through setting up piezoelectric element 23 and the elastic electrode of different quantity, can adjust the total thickness that a plurality of piezoelectric element 23 fold and establish, can further adjust the angle of piezoelectric element 23 in fixed knot constructs 1, can further increase the diffusion scope of light, improved the convenience of use.
The application also provides a projection device, as shown in fig. 6, comprising a reflecting device and a projector body 4, wherein the reflecting device is arranged on the projector body 4, the projection device comprises a projection plane 5, and the projection plane 5 is used for receiving and projecting the light signals emitted from the reflecting device.
Specifically, in this embodiment, the optical signal is set as a projection light, the projection light emitted from the projector body 4 irradiates the reflection device, the projection light is reflected by the reflection device, the projector light irradiates the projection plane 5 through diffusion, and the diffused light can be projected to the projection plane 5 and projected on the projection plane 5 to form a projection picture; in addition, by controlling the on-off operation of the projection light, different projection screens can be formed, for example, when the on-off operation of the projection light is set to "on, off, on. The projection line can be formed when the on-off operation of the projection light is set to" on, off, bright, and off, "the projection plane can be formed when the on-off operation of the projection light is set to normally on, and the projection screen converted from the projection point to the projection line and from the projection line to the projection plane can be formed when the on-off operation of the projection light is set to" on, off, bright, and bright.
Compared with the prior art, the projection device provided by the embodiment of the application has the advantages that the projection light of the projector body 4 is diffused through the reflecting device, so that the projection light is fully diffused, the projection picture is prevented from being glaring and patchy, and different projection pictures can be formed.
In another embodiment of the present application, referring to fig. 1 and fig. 6, the number of the reflecting devices is plural, the reflecting devices are distributed at intervals, and a second reflecting element 6 is disposed between any two adjacent reflecting devices, and the second reflecting element 6 is configured to reflect the light emitted from the first reflecting element 3 of one of the reflecting devices to the first reflecting element 3 of the other reflecting device;
or any adjacent three reflecting devices are arranged at intervals, and any one of the three reflecting devices is positioned between the light emitting sides of the other two reflecting devices, wherein any one of the reflecting devices is configured to reflect the light signals emitted by the first reflecting piece 3 of one of the other two reflecting devices to the first reflecting piece 3 of the other reflecting device.
Specifically, when the second reflecting member 6 is disposed between any two adjacent reflecting devices, any one of the two adjacent reflecting devices can diffuse the optical signal for the first time, and emit the optical signal passing through the first diffusion to the second reflecting member 6, the second reflecting member 6 can reflect the optical signal passing through the first diffusion to the other reflecting device, in this process, the transmission distance of the optical signal is increased, so that the diffusion angle of the optical signal is increased, when the optical signal reflected by the second reflecting member 6 is transmitted to the other reflecting device, the optical signal can be diffused for the second time, so that the diffusion angle of the optical signal is further increased, and when the other reflecting devices are disposed between any two adjacent reflecting devices, that is, any one of the two adjacent reflecting devices is located between the light emitting sides of the other two reflecting devices, so that the light emitting side direction of any two adjacent reflecting devices keeps the same, that is, the light emitting side direction of the last one reflecting device is different from any two of the two reflecting devices, and the first reflecting member 3 of the two reflecting devices can diffuse the optical signal for the second time, and the light emitting side of the two reflecting devices can diffuse the optical signal to the second reflecting device, and the light emitting side of the first reflecting device is different from the first side of the two adjacent reflecting devices, and the light emitting side of the two adjacent reflecting devices can diffuse the optical signal, and the light emitting side of the first signal is diffused from the first side of the first reflecting device, and the light emitting side of the two adjacent light emitting side is diffused from the first side.
Through a plurality of reflection apparatuses and second reflector 6, can carry out diffusion many times to the light like this setting, in practical application in-process, can adjust the diffusion angle of light according to actual demand, help improving the convenience of use.
In another embodiment of the application, see fig. 6 and 7, the oscillation axes of the piezoelectric elements 23 of two adjacent reflecting devices are parallel.
It should be noted that, in the present embodiment, the number of the reflecting devices is two, and of course, in other embodiments, the reflecting devices may be other numbers according to actual use requirements.
Specifically, in this embodiment, the number of the reflecting devices is two, the projection light of the projector body 4 is firstly irradiated to one of the reflecting devices, the projection light is reflected by one of the reflecting devices, the projection light can be first diffused, the projection light passing through the first diffusion is irradiated to the second reflecting member 6, the second reflecting member 6 reflects the projection light passing through the first diffusion to the other reflecting device, the projection light passing through the first diffusion can be increased in angle by the second reflecting member 6, the other reflecting device can be second diffused, for example, referring to fig. 6, the projection light is S, one of the first reflecting members 3 is reflected between the first position and the second position, when the first reflecting member 3 is in the first position, the projection light S is reflected by the first reflecting member 3 to form the projection light S1, when the first reflecting member 3 is in the second position, the projection light S2 is formed by the reflection of the first reflecting member 3, wherein the projection light S1 is formed by the reflection of the first reflecting member 3, the projection light S2 is formed by the reflection of the first reflecting member, and the projection light S1 is formed by the reflection of the second reflecting member 3 when the other first reflecting member is in the second position, and the projection light S1 is formed by the second reflecting member, and the projection light S2 is formed by the reflection of the second reflecting member 1, and the projection light S1 is formed by the reflection light passing through the second reflecting member 1 when the first reflecting member is in the second reflecting member 1, and the second reflecting member is formed by the reflection light S1 when the first reflecting member is formed by the first reflecting member 1, the projection light S21 are all located in the same plane.
In addition, the swing axes of the piezoelectric elements 23 of two adjacent reflecting devices are parallel, and the diffusion directions of the projection light rays are all positioned in the same plane, so that the projection light rays can be diffused along one direction, and the convenience of use is improved.
In another embodiment of the present application, referring to fig. 8, the light received by the projection plane 5 forms an angle smaller than 90 ° with the projection plane 5.
It should be noted that, in the present embodiment, the angle γ between the projection plane 5 and the received light is set to 9 ° and 18 ° as an example, however, in other embodiments, the angle γ may be set to 1 °,2 °,3 °,4 °,5 °,6 °, 7 °,8 °,10 °,11 °,12 °,13 °, 14 °, 15 °, 16 °, 17 °, 18 °, 19 °, and the term "87 °, 88 ° or 89 ° according to practical application requirements, and is not limited thereto.
Specifically, in this embodiment, the number of the reflecting devices is set to one, and in other embodiments, the reflecting devices may be set to other numbers according to practical application requirements, the first reflecting member 3 of the reflecting device may swing between a first position and a second position, for example, when the first reflecting member 3 is in the first position, the projection light M is reflected by the first reflecting member 3 to form the projection light M1, and when the first reflecting member 3 is in the second position, the projection light M is reflected by the first reflecting member 3 to form the projection light M2, where an angle between the projection light M1 and the projection plane 5 is 9 °, and an angle between the projection light M2 and the projection plane 5 is 18 °.
So set up, compare with the contained angle between the outgoing light of projection plane 5 and reflection mechanism among the prior art is greater than 90, when the contained angle between the outgoing light of projection plane 5 and reflection mechanism is less than 90, can make projection laser shine the area increase on projection plane 5 after the diffusion.
Example two
The present embodiment is substantially the same as the first embodiment except that, as shown in fig. 2, the surfaces of the piezoelectric element 23, the first elastic electrode 21 and the second elastic electrode 22 are each provided with the first reflecting member 3.
Specifically, the surfaces of the piezoelectric element 23, the first elastic electrode 21 and the second elastic electrode 22 are provided with the first reflecting member 3, and the piezoelectric element 23 can drive the first elastic electrode 21 and the second elastic electrode 22 to swing around the X axis simultaneously while swinging around the X axis, so that the reflecting device can reflect multiple beams of light rays simultaneously.
So set up, a plurality of first reflecting members 3 can be along with piezoelectric element 23, first elastic electrode 21 and second elastic electrode 22 activity to adjust the reflection direction and the angle of first reflecting member 3, can reflect the multibeam light simultaneously according to the practical application demand, like this, can diffuse the multibeam light simultaneously, improved reflect device's utilization ratio, help improving the convenience of use.
Example III
The present embodiment is substantially the same as the first embodiment, except that, as shown in fig. 2, the first elastic portion 212 and the second elastic portion 222 are respectively disposed outside two opposite sides of the piezoelectric element 23 along the Z axis.
In this embodiment, the first elastic portion 212 and the second elastic portion 222 are springs, and the first elastic portion 212 and the second elastic portion 222 are disposed to extend along the Z axis and provide an elastic force with an elastic force substantially parallel to the Z axis, and in other embodiments, the first elastic portion 212 and the second elastic portion 222 may be tension springs, elastic sheets, etc. according to practical application requirements.
Specifically, the first elastic portion 212 and the second elastic portion 222 are respectively disposed outside two opposite sides of the piezoelectric element 23 along the Z axis, wherein the first elastic portion 212 is abutted between the first elastic piece 211 and the fixed structure 1, the second elastic portion 222 is abutted between the second elastic piece 221 and the fixed structure 1, when the piezoelectric element 23 expands, the piezoelectric element 23 swings clockwise around the X axis, the distance between the two sides of the piezoelectric element 23 and the fixed structure 1 is shortened, the first elastic portion 212 and the second elastic portion 222 are both in a compressed state while storing an elastic force, when the piezoelectric element 23 contracts, the piezoelectric element 23 swings counterclockwise around the X axis, the distance between the two sides of the piezoelectric element 23 and the fixed structure 1 is increased, and when the first elastic portion 212 and the second elastic portion 222 are in an extended state, the stored elastic force can be applied to the piezoelectric element 23.
In this way, when the piezoelectric element 23 expands, the first elastic portion 212 and the second elastic portion 222 can store elastic force, and when the piezoelectric element 23 contracts, the stored elastic force acts on the piezoelectric element 23 to enable the piezoelectric element 23 to swing rapidly around the X axis, so that the swing efficiency of the piezoelectric element 23 can be accelerated, and in addition, the piezoelectric element 23 can be always limited between the first limiting portion 11 and the second limiting portion 12 by the first elastic portion 212 and the second elastic portion 222.
Example IV
This embodiment is substantially identical to the first embodiment except that, as shown in fig. 2, the piezoelectric element 23 is provided with first reflecting members 3 on opposite sides along the Z axis.
Specifically, the piezoelectric element 23 is provided with the first reflecting members 3 on opposite sides of the piezoelectric element 23 along the Z axis, and the piezoelectric element 23 is configured to extend out of either one of opposite sides of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, so that in this embodiment, the number of the first reflecting members 3 may be two or four, when the number of the first reflecting members 3 is two, the two first reflecting members 3 are respectively provided on either one of opposite sides of the piezoelectric element 23 along the Z axis, one of the first reflecting members 3 is provided on one of opposite sides of the piezoelectric element 23 along the Z axis, and one of the first reflecting members 3 is provided on either one of opposite sides of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, the other first reflecting member 3 is provided on the other side of the piezoelectric element 23 along the Z axis, and the other first reflecting member 3 is provided on either one of opposite sides of the first elastic electrode 21 and the second elastic electrode 22 along the Y axis, and when the number of the first reflecting members 3 is provided on the other side of opposite sides of the first reflecting member 3 along the Z axis, and the fourth reflecting member 3 is provided on the opposite sides of the first elastic electrode 21 and the first reflecting member 23 along the Z axis.
Thus, when the incident light is provided as a plurality of beams, the corresponding first reflecting member 3 can be provided on the surface of the piezoelectric element 23 according to the number of the incident light and the incident direction, which contributes to the improvement of the convenience of use.
Example five
This embodiment is substantially the same as the first embodiment except that the oscillation axes of the piezoelectric elements 23 of two adjacent reflecting devices form a predetermined angle as shown in fig. 9 to 12.
It should be noted that, in the present embodiment, the number of the reflecting devices is two, and of course, in other embodiments, the reflecting devices may be other numbers according to actual use requirements.
In this embodiment, the preset angle formed by the swing axes of the piezoelectric elements 23 of two adjacent reflecting devices is set to 90 ° for example, however, in other embodiments, the preset angle may be set to other angles according to practical application requirements, for example, the preset angle may be set to all angles between 1 ° and 89 °.
Specifically, in this embodiment, the preset angle is 90 °, that is, the length direction of one of the two adjacent reflecting devices is perpendicular to the length direction of the other reflecting device, for example, the projection light N irradiates onto the first reflecting member 3 of one of the reflecting devices, the first reflecting member 3 can swing between a first position and a second position, when the first reflecting member 3 is in the first position, the projection light N forms a projection light N1 through reflection of the first reflecting member 3, when the first reflecting member is in the second position, the projection light N forms a projection light N2 through reflection of the first reflecting member 3, and therefore, it is known that the projection light N1 and the projection light N2 are in the same plane, the swing axis of one of the reflecting devices of the other reflecting device is perpendicular, so that the direction of diffusion of the projection light N can be changed, the projection light N1 and the projection light N2 can swing to the other reflecting device, when the other first reflecting member 3 is in the first position, the projection light N1 forms a projection light N2 through reflection of the first reflecting member 3, and when the other first reflecting member 3 is in the first position, the projection light N1 forms a projection light N2 through reflection of the second reflecting member is in the second direction, and thus the projection light N2 is not in the same as the direction of the second reflecting light N2, and the projection light N forms a projection light N2 through diffusion direction of the second reflecting device is in the second direction.
So set up, the axis of oscillation of the piezoelectric element 23 of two adjacent reflecting devices, projection light can one of them direction diffuse through one of them reflecting device, can diffuse to another direction through another reflecting device to realize the diffusion of projection light in different directions, help improving the convenience of use.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (10)
1. The projection equipment is characterized by comprising a reflection device and a projector body, wherein the reflection device is arranged on the projector body, and the projection equipment comprises a projection plane, and the projection plane is used for receiving and projecting the light signals emitted from the reflection device;
The number of the reflecting devices is set to be a plurality, the reflecting devices are distributed at intervals, and any adjacent three reflecting devices are arranged at intervals, wherein any one of the reflecting devices is configured to reflect light signals emitted by a first reflecting piece of one of the other two reflecting devices to the first reflecting piece of the other reflecting device;
The reflecting device includes:
a fixed structure;
The vibration assembly comprises a first elastic electrode, a second elastic electrode and a piezoelectric element, wherein the first elastic electrode and the second elastic electrode are arranged on the fixed structure at intervals, and the piezoelectric element is abutted between the first elastic electrode and the second elastic electrode along the Z axis and can swing around the X axis under the action of an electric field generated by the cooperation of the first elastic electrode and the second elastic electrode;
The piezoelectric element is provided with a first reflecting piece along two opposite sides of the Z axis;
The first reflecting member is configured to be movable with the piezoelectric element, the first elastic electrode, and/or the second elastic electrode to adjust a reflecting direction and an angle of the first reflecting member.
2. The projection device of claim 1, wherein the oscillation axes of the piezoelectric elements of two adjacent ones of the reflecting means are parallel or the oscillation axes of the piezoelectric elements of two adjacent ones of the reflecting means form a predetermined angle.
3. The projection device of claim 1, wherein the light received by the projection plane forms an angle with the projection plane of less than 90 °.
4. The projection device of claim 1, wherein the piezoelectric element is configured to extend along the Y-axis beyond opposite sides of the first and second elastic electrodes, the securing structure has first and second limiting portions disposed on opposite sides of the piezoelectric element along the Z-axis, respectively, the first and second limiting portions being spaced apart along the Y-axis and configured to limit the piezoelectric element from extending along the Y-axis beyond opposite sides of the first and second elastic electrodes, respectively.
5. The projection device of claim 1, wherein the vibration assembly includes three or more elastic electrodes spaced apart along the Z-axis, the piezoelectric element is abutted between any two adjacent elastic electrodes, and the first elastic electrode and the second elastic electrode are respectively provided for any two adjacent elastic electrodes.
6. The projection device of claim 1, wherein the first elastic electrode includes a first spring and a first elastic portion, the first elastic portion is connected between the first spring and the fixed structure, the second elastic electrode includes a second spring and a second elastic portion, the second elastic portion is connected between the second spring and the fixed structure and is spaced from the first elastic portion, and the piezoelectric element is abutted between the first spring and the second spring along the Z-axis.
7. The projection apparatus according to claim 6, wherein the first elastic portion and the second elastic portion are respectively provided outside opposite ends of the piezoelectric element along the X-axis, or the first elastic portion and the second elastic portion are respectively provided outside opposite sides of the piezoelectric element along the Z-axis.
8. The projection apparatus according to claim 6, wherein the first elastic portion and the second elastic portion are respectively disposed outside opposite ends of the piezoelectric element along the X-axis, and each of the first elastic portion and the second elastic portion is curved, and a bending direction of the first elastic portion is perpendicular to the Z-axis and/or a bending direction of the second elastic portion is perpendicular to the Z-axis.
9. The projection device of claim 6, wherein the first resilient portion is coupled to either of opposite ends of the first spring along the Y-axis, and the second resilient portion is coupled to either of opposite ends of the second spring along the Y-axis.
10. The projection device of any of claims 4-8, wherein a movable cavity is provided within the stationary structure, the movable cavity having an opening, wherein the piezoelectric element, the first reflective element, at least a portion of the first resilient electrode, and at least a portion of the second resilient electrode are all located within the movable cavity, wherein the first reflective element is in direct opposition to the opening and is capable of receiving or reflecting light through the opening.
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| CN202211142243.XA CN115437204B (en) | 2022-09-20 | 2022-09-20 | Reflection device and projection equipment |
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Citations (1)
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| CN1180417A (en) * | 1996-02-26 | 1998-04-29 | 精工爱普生株式会社 | Light modulation device, display device and electronic equipment |
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|---|---|---|---|---|
| JP2009093120A (en) * | 2007-10-12 | 2009-04-30 | Panasonic Corp | Optical reflection element |
| JP2009223113A (en) * | 2008-03-18 | 2009-10-01 | Panasonic Corp | Optical reflection element and image projection apparatus using the same |
| CN103954823B (en) * | 2014-05-14 | 2016-08-10 | 中国科学院声学研究所 | Surface Acoustic Wave Current Sensor |
| JP6308701B2 (en) * | 2014-09-30 | 2018-04-11 | 富士フイルム株式会社 | Mirror driving device and driving method thereof |
| KR101757909B1 (en) * | 2016-11-08 | 2017-07-26 | 허윤실 | Bracket for establishing beam projector |
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| CN1180417A (en) * | 1996-02-26 | 1998-04-29 | 精工爱普生株式会社 | Light modulation device, display device and electronic equipment |
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| CN115437204A (en) | 2022-12-06 |
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Address after: 518000 workshop 101, 201, 301, 401, 501, 601, building 2, Hongao Industrial Park, the intersection of Genyu road and Nanming Road, Tianliao community, Yutang street, Guangming District, Shenzhen, Guangdong Province Patentee after: Shenzhen Yifeng Optoelectronics Technology Co.,Ltd. Country or region after: China Address before: Building 2, Hongao Industrial Park, Intersection of Genyu Road and Nanming Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen City, Guangdong Province, China Patentee before: SHENZHEN EFUN TECHNOLOGY Co.,Ltd. Country or region before: China |