CN111856744A - Optical fiber scanning display device - Google Patents

Optical fiber scanning display device Download PDF

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Publication number
CN111856744A
CN111856744A CN201910356579.8A CN201910356579A CN111856744A CN 111856744 A CN111856744 A CN 111856744A CN 201910356579 A CN201910356579 A CN 201910356579A CN 111856744 A CN111856744 A CN 111856744A
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actuator
optical fiber
actuating
actuating part
actuating portion
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CN201910356579.8A
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CN111856744B (en
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不公告发明人
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Chengdu Idealsee Technology Co Ltd
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Chengdu Idealsee Technology Co Ltd
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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
    • G02B26/0816—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
    • G02B26/0833—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 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • G02B26/0858—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 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting means being moved or deformed by piezoelectric means
    • 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
    • G02B26/0833—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 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • G02B26/085—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 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting means being moved or deformed by electromagnetic means
    • 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
    • G02B26/10—Scanning systems
    • G02B26/103—Scanning systems having movable or deformable optical fibres, light guides or waveguides as scanning elements

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

The invention discloses an optical fiber scanning display device which comprises a base, a first actuating part, a second actuating part and an optical fiber, wherein the first actuating part and the second actuating part extend along the front and back direction, the front end and the back end of the first actuating part are respectively a free end and a fixed end, the front end and the back end of the second actuating part are respectively a fixed end and a free end, the fixed end of the first actuating part is fixedly connected with the base, the fixed end of the second actuating part is fixedly connected with the free end of the first actuating part, and the light emitting end of the optical fiber is fixedly connected with the free end of the second actuating part in a cantilever supporting mode. The invention realizes that the first actuating part and the second actuating part have the overlapping area in the front and back directions, thereby reducing the size of the device in the front and back directions, improving the compactness of the structure of the device and effectively reducing the occupied volume of the device.

Description

Optical fiber scanning display device
Technical Field
The invention relates to the technical field of optical fiber scanning devices, in particular to an optical fiber scanning display device.
Background
The fiber scanner is a display technology that controls the swing of the optical fiber by using an actuator to emit a pattern, and the illuminated pattern has saturation color, high contrast, and very small structural volume, and is mainly used in the Fiber Scanning Display (FSD) technology and the Fiber Scanning Endoscope (FSE) technology.
In some applications, further reduction of the space occupied by the fiber scanner is required, such as VR, AR, micro-projection, optical field display, etc. Reducing the volume of the fiber scanner becomes an important issue for optimizing the structure of the fiber scanner.
Disclosure of Invention
The embodiment of the invention provides an optical fiber scanning display device, which is used for reducing the occupied volume of the device.
In order to achieve the above object, the present invention provides an optical fiber scanning display device, including a base, a first actuating portion, a second actuating portion and an optical fiber, wherein the first actuating portion and the second actuating portion both extend along a front-back direction, the front end and the rear end of the first actuating portion are respectively a free end and a fixed end, the front end and the rear end of the second actuating portion are respectively a fixed end and a free end, the fixed end of the first actuating portion is fixedly connected with the base, the fixed end of the second actuating portion is fixedly connected with the free end of the first actuating portion, the light-emitting end of the optical fiber is fixedly connected with the free end of the second actuating portion in a cantilever supporting manner, a portion of the light-emitting end of the optical fiber, which exceeds the free end of the second actuating portion, forms an optical fiber cantilever, the free end of the first actuating portion vibrates along a first axis perpendicular to the front-back direction relative to the fixed end thereof, the free end of the second actuating portion vibrates along a second axis, the first axis and the second axis form an included angle.
The invention realizes that the first actuating part and the second actuating part have the overlapping area in the front and back directions through the structure, thereby reducing the size of the device in the front and back directions.
A gap is formed between the first actuating part and the second actuating part so as to avoid interference of the first actuating part or the base on vibration of the free end of the second actuating part.
The first actuating part and the base and the second actuating part and the first actuating part can be integrally formed or split type fixed connecting structures, for example, a fixing part of the first actuating part can be fixedly arranged on the base through a fastening connecting piece, and a fixing end of the second actuating part can be fixedly connected with a free end of the first actuating part through the fastening connecting piece. And preferably, the fastening connection connecting the second actuating portion and the first actuating portion extends in a direction perpendicular to the front-rear direction by a length such that there is a desired gap between the first actuating portion and the second actuating portion.
Optionally, the optical fiber scanning display device further includes a housing, the base, the first actuating portion, the second actuating portion and the optical fiber are all disposed in the housing, the base is fixedly connected to the housing, and the housing is provided with a light outlet through which a light beam emitted by the optical fiber passes.
A projection objective is arranged in the light outlet; or the optical fiber is a self-focusing optical fiber (GRIN optical fiber), and the light outlet can be provided with no projection objective.
Alternatively, the first and second actuating portions may be a piezoelectric actuator, a magnetostrictive actuator, a Micro Electro Mechanical System (MEMS), an electromagnetic actuator, or the like, which is not limited as long as the free end of the actuating portion can vibrate along an axis perpendicular to the front-back direction with respect to the fixed end.
Preferably, the first actuating part and the second actuating part are both piezoelectric actuators. Further, the first and second actuating portions may be a bimorph actuator, a piezoelectric material tube actuator, or a piezoelectric sheet drive actuator.
Preferably, the first actuating portion is a piezoelectric material tube actuator, the base is fixedly connected with an outer circumference of a fixed end of the first actuating portion, a rear end of the piezoelectric material tube of the first actuating portion is kept in an open structure, and the second actuating portion is arranged in the piezoelectric material tube of the first actuating portion. Optionally, a connecting piece is arranged inside the front end of the piezoelectric material tube of the first actuating portion, and the fixed end of the second actuating portion is fixedly connected with the connecting piece. At this time, also, the second actuation portion may be a piezoelectric actuator, a magnetostrictive actuator, a Micro Electro Mechanical System (MEMS), an electromagnetic actuator, or the like. Preferably, the second actuating portions are all piezoelectric actuators, and further, the second actuating portions may be the bimorph actuators, the piezoelectric material tube actuators, or the piezoelectric sheet drive actuators.
Preferably, the second actuating portion is a piezoelectric material tube actuator, and the first actuating portion is disposed in a piezoelectric material tube of the second actuating portion. Optionally, a connecting piece is arranged inside the front end of the piezoelectric material tube of the second actuating portion, and the free end of the first actuating portion is fixedly connected with the connecting piece. When the length of the first actuating part extending along the front-back direction is less than the length of the second actuating part extending along the front-back direction, the base is provided with a horizontal extending part extending into the piezoelectric material pipe of the second actuating part, so that the interference of the base on the vibration of the free end of the second actuating part is avoided. At this time, also, the first actuation portion may be a piezoelectric actuator, a magnetostrictive actuator, a Micro Electro Mechanical System (MEMS), an electromagnetic actuator, or the like. Preferably, the first actuating portion is a piezoelectric actuator, and further, the first actuating portion may be the bimorph actuator, the piezoelectric material tube actuator, or the piezoelectric sheet drive actuator.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the invention realizes that the first actuating part and the second actuating part have the overlapping area in the front and back directions, thereby reducing the size of the device in the front and back directions.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;
figure 4 is a cross-sectional view of a bimorph actuator of the present invention, taken in a cross-section perpendicular to a first direction. (ii) a
FIG. 5 is a cross-sectional view of the piezoelectric material tube actuator of the present invention taken in a cross-section perpendicular to the axial direction;
fig. 6 is a sectional view of the piezoelectric sheet drive actuator of the present invention taken in a section perpendicular to the first direction.
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.
An embodiment of the present invention provides an optical fiber scanning display device, as shown in fig. 1, including a base 1, a first actuating portion 2, a second actuating portion 3, and an optical fiber 5, where the first actuating portion 2 and the second actuating portion 3 both extend in a front-back direction, the front and back ends of the first actuating portion 2 are respectively a free end 21 and a fixed end 22, the front and back ends of the second actuating portion 3 are respectively a fixed end 32 and a free end 31, the fixed end 22 of the first actuating portion 2 is fixedly connected to the base 1, the fixed end 32 of the second actuating portion 3 is fixedly connected to the free end 21 of the first actuating portion 2, the light emitting end of the optical fiber 1 is fixedly connected to the free end 31 of the second actuating portion 3 in a cantilever supporting manner, a portion of the light emitting end of the optical fiber 1 exceeding the free end 31 of the second actuating portion 3 forms an optical fiber cantilever 5, the free end 21 of the first actuating portion 2 vibrates along a first axis perpendicular to the front-back direction with respect to the fixed end 22 thereof, the free end 31 of the second actuator 3 vibrates relative to its fixed end 32 along a second axis perpendicular to the front-to-rear direction, the first axis and the second axis having an angle therebetween.
The invention realizes that the first actuating part 2 and the second actuating part 3 have overlapping areas in the front and back directions through the structure, thereby reducing the size of the device in the front and back directions.
A gap is provided between the first actuating portion 2 and the second actuating portion 3 to avoid interference of the first actuating portion 2 or the base 1 with vibration of the free end 31 of the second actuating portion 3.
The first actuating portion 2 and the base 1, and the second actuating portion 3 and the first actuating portion 2 may be integrally formed, or may be separated from each other to form a fixed connection structure, for example, the fixing portion of the first actuating portion 2 may be fixedly mounted on the base 1 by the fastening connector 6, and the fixing portion 32 of the second actuating portion 3 may be fixedly connected to the free end 21 of the first actuating portion 2 by the fastening connector 6. And it is preferable that the fastening connection 6 connecting the second actuating part 3 and the first actuating part 2 extends in a direction perpendicular to the front-rear direction by a length such that there is a desired gap between the first actuating part 2 and the second actuating part 3.
The optical fiber scanning display device further comprises a shell 7, the base 1, the first actuating portion 2, the second actuating portion 3 and the optical fiber 4 are all arranged in the shell 7, the base 1 is fixedly connected with the shell 7, and a light outlet 8 for light beams emitted by the optical fiber 4 to pass through is formed in the shell 7.
A projection objective lens 9 is arranged in the light outlet 8; alternatively, as shown in fig. 2, the optical fiber 1 is a self-focusing optical fiber (GRIN fiber), and the light outlet 8 may not be provided with a projection objective.
The first and second actuating portions 2 and 3 may be a piezoelectric actuator, a magnetostrictive actuator, a Micro Electro Mechanical System (MEMS), an electromagnetic actuator, or the like, but are not limited thereto as long as the free end of the actuating portion can vibrate along an axis perpendicular to the front-rear direction with respect to the fixed end.
Preferably, the first actuating part 2 and the second actuating part 3 are both piezoelectric actuators. Further, the first and second actuating portions 2 and 3 may be a bimorph actuator, a piezoelectric material tube actuator, or a piezoelectric sheet drive actuator.
As shown in fig. 4, the bimorph actuator includes a middle spacer 201 extending along a first direction, a first piezoelectric material sheet 202 parallel to the middle spacer 201 is disposed on one side of the middle spacer 201, a second piezoelectric material sheet 203 parallel to the middle spacer 201 is disposed on the other side of the middle spacer 201, the first piezoelectric material sheet 202 and the second piezoelectric material sheet 203 each have two first surfaces parallel to the middle spacer 201, and a layer of electrode 204 is disposed on each of the first surfaces of the first piezoelectric material sheet 202 and the second piezoelectric material sheet 203.
When the first actuating portion 2 or the second actuating portion 3 is a bimorph actuator, the middle spacer 201 may be used to connect to the base or another actuating portion, both the middle spacer 201 and at least one piece of piezoelectric material may be connected to the base or another actuating portion, or only at least one piece of piezoelectric material may be connected to the base or another actuating portion.
The electrodes 204 of the first sheet 202 and the second sheet 203 of piezoelectric material are each connected to an external drive circuit to apply an alternating electric field to the sheets of piezoelectric material through the electrodes 204. The first piezoelectric material piece 202 is elongated or shortened by the alternating electric field applied from the electrode 204, and the second piezoelectric material piece 203 is elongated or shortened by the alternating electric field applied from the electrode 204, and the expansion and contraction directions of the first piezoelectric material piece 202 and the second piezoelectric material piece 203 are opposite at any one time.
Since one end of the first and second actuators 2 and 3 is a fixed end, the synchronous reverse expansion and contraction of the first and second pieces of piezoelectric material 202 and 203 drives the free end of the actuator to vibrate in a direction perpendicular to the middle spacer 201 relative to the fixed end thereof.
As shown in fig. 5, the piezoelectric tube actuator includes a piezoelectric tube 221, an outer surface of the piezoelectric tube 221 is provided with at least two pairs of outer electrodes 222 symmetrical with respect to an axial center of the piezoelectric tube 221, and an inner surface of the piezoelectric tube 221 is provided with an inner electrode 223 fitted to the outer electrodes 222. So that the front end of the actuator vibrates along its corresponding axis when the inner electrode 223 and the outer electrode 222 are connected to an external driving device.
When the first actuating part 2 or the second actuating part 3 is actuated by a piezoelectric material tube, the piezoelectric material tube can be used for being connected with a base or another actuating part.
Each of the outer electrode 212 and the inner electrode 213 of the piezoelectric material tube 211 is connected to an external driving circuit to apply an alternating electric field to the piezoelectric material tube 211 through each pair of the mating outer electrode 212 and inner electrode 213. The piezoelectric material tube 211 is polarized along the radial direction, each pair of outer electrodes 212 and inner electrodes 213 corresponding to the outer electrodes 212, which are symmetrical about the axial lead of the piezoelectric material tube 211, drive the piezoelectric material tube 211 to expand and contract in opposite directions at the same time, that is, when one outer electrode 212 and the inner electrode 213 in each pair of outer electrodes 212 drive the piezoelectric material tube 211 located in the range to expand, the other outer electrode 212 and the inner electrode 213 drive the piezoelectric material tube 211 located in the range to synchronously contract; and vice versa. When one end of the piezoelectric material tube 211 is fixed, the other end of the piezoelectric material tube 211 is a free end, and the synchronous extension and contraction causes the free end of the piezoelectric material tube 211 to vibrate in a direction perpendicular to the axis relative to the fixed end. When the outer surface of the piezoelectric material tube 211 is provided with n pairs of outer electrodes 212 symmetrical with respect to the axis of the piezoelectric material tube 211, the free end of the piezoelectric material tube 211 may vibrate in n directions perpendicular to the axis with respect to the fixed end. As a preferred embodiment of such an embodiment, n is 1 or 2, and when n is 2, one pair of the outer electrodes 212 symmetric about the axis of the piezoelectric material tube 211 and the corresponding inner electrodes 213 drives the free end of the piezoelectric material tube 211 to vibrate in a direction perpendicular to the axis with respect to the fixed end thereof, and the other pair of the outer electrodes 212 symmetric about the axis of the piezoelectric material tube 211 and the corresponding inner electrodes 213 drives the free end of the piezoelectric material tube 211 to vibrate in another direction perpendicular to the axis, so that the piezoelectric material tube actuator has a correction function, and the final vibration direction thereof can be freely adjusted to overcome the distortion of the scanning track caused by the errors in the mounting, machining and other processes.
As shown in fig. 6, the piezoelectric sheet driving actuator includes a base 221 having an axial direction as a first direction, at least one first piezoelectric sheet 222 that expands and contracts along the first direction is attached to a surface of the base 221 at intervals along a circumferential direction, when at least two first piezoelectric sheets 222 are attached to the surface of the base 221 at intervals along the circumferential direction, any two first piezoelectric sheets 222 may or may not be symmetric with respect to a center of the base 221, two ends of the base 221 along the first direction are a fixed end and a free end, respectively, and the expansion and contraction of the first piezoelectric sheets 222 drives the free end of the base 221 to vibrate along a direction perpendicular to the first direction with respect to the fixed end. When the two first piezoelectric sheets 222 are symmetrical about the center of the base 221, the expansion and contraction directions of the two first piezoelectric sheets 222 symmetrical about the center of the base 221 at any one time are opposite, so that the two first piezoelectric sheets 222 jointly drive the base 221 to vibrate in a direction perpendicular to the first direction; the first piezoelectric sheets 222, which are not symmetrical with respect to the center of the base 221, each drive the base 221 to vibrate in a corresponding direction perpendicular to the first direction. The surface of the base 221 may be provided with only one first piezoelectric sheet 222 or only two first piezoelectric sheets 222 with respect to the center of the base 221, so that the free end of the base 221 may vibrate in a direction perpendicular to the first direction; at least two first piezoelectric sheets 222 which are not symmetrical with respect to the center of the base 221 may be provided, so that the free end of the base 221 may vibrate in a plurality of directions perpendicular to the first direction, and the piezoelectric sheet driving actuator may have a correction function, and the final vibration direction thereof may be freely adjusted to overcome distortion of a scanning track due to errors in mounting, machining, and the like.
When the first actuating portion 2 or the second actuating portion 3 is a piezoelectric sheet-driven actuator, the base 221 thereof may be used to connect with a base or another actuating portion.
As shown in fig. 3, the first piezoelectric sheet 222 includes a sheet of piezoelectric material, a surface of the sheet contacting the base 221 and a surface opposite to the surface are each provided with an electrode, and the sheet of piezoelectric material is polarized in a direction perpendicular to the two surfaces, that is, the sheet of piezoelectric material is polarized in a thickness direction.
The cross section of the substrate 221 can be any closed figure formed by straight lines and/or curved lines; for example, the cross section of the substrate 221 may be square, circular or elliptical.
In some preferred embodiments of the present invention, as shown in fig. 2, the first actuating portion 2 is a piezoelectric material tube actuator, the base 1 is fixedly connected to an outer circumference of the fixed end 22 of the first actuating portion 2, and keeps a rear end of the piezoelectric material tube of the first actuating portion 2 in an open structure, and the second actuating portion 3 is disposed in the piezoelectric material tube of the first actuating portion 2. Optionally, a connecting piece 61 is arranged inside the front end of the piezoelectric material tube of the first actuating portion 2, and the fixed end 32 of the second actuating portion 3 is fixedly connected to the connecting piece 61. At this time, also, the second actuation portion 3 may be a piezoelectric actuator, a magnetostrictive actuator, a Micro Electro Mechanical System (MEMS), an electromagnetic actuator, or the like. Preferably, the second actuating portion 3 is a piezoelectric actuator, and further, the second actuating portion 3 may be the bimorph actuator, the piezoelectric material tube actuator, or the piezoelectric sheet drive actuator.
In some preferred embodiments of the present invention, as shown in fig. 3, the second actuating portion 3 is a piezoelectric material tube actuator, and the first actuating portion 2 is disposed in the piezoelectric material tube of the second actuating portion 3. Optionally, a connector 62 is disposed inside the front end of the piezoelectric material tube of the second actuating portion 3, and the free end 21 of the first actuating portion 2 is fixedly connected to the connector 62. When the length of the first actuating part 2 extending along the front-back direction is less than the length of the second actuating part 3 extending along the front-back direction, the base 2 has a horizontal extension part 11 extending into the piezoelectric material tube of the second actuating part 3, so as to avoid the interference of the base 1 on the vibration of the free end of the second actuating part 3. At this time, similarly, the first actuation portion 2 may be a piezoelectric actuator, a magnetostrictive actuator, a Micro Electro Mechanical System (MEMS), an electromagnetic actuator, or the like. Preferably, the first actuating portion 2 is a piezoelectric actuator, and further, the first actuating portion 2 may be the bimorph actuator, the piezoelectric material tube actuator, or the piezoelectric sheet drive actuator.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" or "comprises" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of the words first, second, third, etc. do not denote any order, but rather the words are to be construed as names.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the invention realizes that the first actuating part and the second actuating part have the overlapping area in the front and back directions, thereby reducing the size of the device in the front and back directions.
All features disclosed in this specification, except features that are mutually exclusive, may be combined in any way.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims (10)

1. An optical fiber scanning display device is characterized by comprising a base, a first actuating part, a second actuating part and an optical fiber, wherein the first actuating part and the second actuating part extend along the front-back direction, the front end and the back end of the first actuating part are respectively a free end and a fixed end, the front end and the back end of the second actuating part are respectively a fixed end and a free end, the fixed end of the first actuating part is fixedly connected with the base, the fixed end of the second actuating part is fixedly connected with the free end of the first actuating part, the light emitting end of the optical fiber is fixedly connected with the free end of the second actuating part in a cantilever supporting mode, the part of the light emitting end of the optical fiber, which exceeds the free end of the second actuating part, forms an optical fiber cantilever, the free end of the first actuating part vibrates along a first axis vertical to the front-back direction relative to the fixed end of the first actuating part, the free end of the second actuating part vibrates along a second axis vertical to the, the first axis and the second axis form an included angle.
2. An optical fiber scanning display device as claimed in claim 1, wherein a gap is provided between the first actuator and the second actuator, said gap being adapted to prevent the first actuator or the base from interfering with the vibration of the free end of the second actuator.
3. An optical fiber scanning display device as claimed in claim 1 or 2, wherein the first and second actuating portions each comprise a piezoelectric actuator, a magnetostrictive actuator, a micro-electromechanical system or an electromagnetic actuator.
4. An optical fiber scanning display device as claimed in claim 3, wherein the first and/or second actuator is a piezoelectric actuator.
5. An optical fiber scanning display device as claimed in claim 3, wherein the first actuating portion is a piezoelectric tube actuator, the base is fixedly connected to an outer circumference of a fixed end of the first actuating portion, a rear end of the piezoelectric tube of the first actuating portion is open, and the second actuating portion is disposed in the piezoelectric tube of the first actuating portion.
6. An optical fiber scanning display device as claimed in claim 5, wherein a connecting member is provided inside the front end of the piezoelectric material tube of the first actuating portion, and the fixed end of the second actuating portion is fixedly connected to the connecting member.
7. An optical fiber scanning display device as claimed in claim 6, wherein said second actuator is a piezoelectric actuator, a magnetostrictive actuator, a micro-electromechanical system or an electromagnetic actuator.
8. An optical fiber scanning display device as claimed in claim 3, wherein the second actuating portion is a piezoelectric tube actuator, and the first actuating portion is disposed in the piezoelectric tube of the second actuating portion.
9. An optical fiber scanning display device as claimed in claim 8, wherein the second actuator has a connecting member disposed inside the front end of the tube of piezoelectric material, and the free end of the first actuator is fixedly connected to the connecting member.
10. An optical fiber scanning display device as claimed in claim 9, wherein the first actuator is a piezoelectric actuator, a magnetostrictive actuator, a micro-electromechanical system or an electromagnetic actuator.
CN201910356579.8A 2019-04-29 2019-04-29 Optical fiber scanning display device Active CN111856744B (en)

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CN111856744B CN111856744B (en) 2022-07-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108803009A (en) * 2017-11-22 2018-11-13 成都理想境界科技有限公司 A kind of fibre optic scanner connection structure
CN108803012A (en) * 2018-03-26 2018-11-13 成都理想境界科技有限公司 Method and fibre optic scanner in optical fiber scanning for correcting image distortion
CN109407308A (en) * 2018-12-11 2019-03-01 成都理想境界科技有限公司 A kind of scan actuator and fibre optic scanner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108803009A (en) * 2017-11-22 2018-11-13 成都理想境界科技有限公司 A kind of fibre optic scanner connection structure
CN108803012A (en) * 2018-03-26 2018-11-13 成都理想境界科技有限公司 Method and fibre optic scanner in optical fiber scanning for correcting image distortion
CN109407308A (en) * 2018-12-11 2019-03-01 成都理想境界科技有限公司 A kind of scan actuator and fibre optic scanner

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