WO2019015219A1 - 用于改变光路的装置及其可调的激光投影装置 - Google Patents

用于改变光路的装置及其可调的激光投影装置 Download PDF

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Publication number
WO2019015219A1
WO2019015219A1 PCT/CN2017/114715 CN2017114715W WO2019015219A1 WO 2019015219 A1 WO2019015219 A1 WO 2019015219A1 CN 2017114715 W CN2017114715 W CN 2017114715W WO 2019015219 A1 WO2019015219 A1 WO 2019015219A1
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Prior art keywords
elastic connecting
magnetic member
connecting member
main structure
carrier
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PCT/CN2017/114715
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English (en)
French (fr)
Inventor
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication of WO2019015219A1 publication Critical patent/WO2019015219A1/zh
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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
    • G03B21/20—Lamp housings
    • G03B21/2046—Positional adjustment of light sources
    • 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
    • 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
    • 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
    • G03B21/20—Lamp housings

Definitions

  • the present invention relates to the field of optical path technology, and more particularly to a device for changing an optical path and an adjustable laser projection device thereof.
  • Current light source systems include a laser source for generating excitation light and a means for changing the optical path.
  • the existing means for changing the optical path is mechanically adjusted so that the means for changing the optical path can change the optical path of the excitation light.
  • the mechanical adjustment of the device that changes the optical path is slow, and the accuracy of changing the optical path of the excitation light is low.
  • the technical problem to be solved by the present invention is to provide a device for changing an optical path and an adjustable laser projection device thereof capable of changing an optical path quickly and accurately.
  • a technical solution adopted by the present invention is to provide a device for changing an optical path, comprising: a main structure; at least one axial core; and a coil wound on the axial core; a carrier Provided at one end of the shaft core for carrying the shaft core; a reflecting member disposed on the carrier for reflecting incident light; at least two elastic connecting members, the elastic connecting member for The carrier is fixed on the main structure; at least one magnetic member is disposed on a surface of the main structure close to the core; input driving power in the coil When flowing, the coil and the core drive the carrier to move in a direction toward or away from the magnetic member, so that the carrier drives the reflector to deflect to change the reflection by the reflector.
  • the light path of the outgoing light comprising: a main structure; at least one axial core; and a coil wound on the axial core; a carrier Provided at one end of the shaft core for carrying the shaft core; a reflecting member disposed on the carrier for reflecting incident light; at least two elastic connecting members, the elastic connecting member for The carrier
  • the at least two elastic connecting members include a first elastic connecting member for connecting one end of the supporting member and a first side of the main structure, and a second elastic connecting member for connecting the bearing The other end of the member and the second side of the main structure, the first side is opposite to the second side, and the first elastic connecting member and the second elastic connecting member are located on the same axis.
  • the at least one magnetic member comprises a first magnetic member and a second magnetic member
  • the first magnetic member and the second magnetic member are disposed on a bottom surface of the main structure
  • the axis of the first magnetic member and the second magnetic member is coupled to the first elastic
  • the axis of the piece and the second resilient connector are orthogonal.
  • the at least one magnetic member comprises a first magnetic member and a second magnetic member
  • the first magnetic member is disposed on the third side of the main structure
  • the second magnetic member is disposed on the fourth side, the third side and the fourth side of the main structure
  • the axes of the first magnetic member and the second magnetic member are orthogonal to the axis of the first elastic connecting member and the second elastic connecting member.
  • the at least one magnetic member comprises a first magnetic member disposed on a top surface of the main structure, the second magnetic member being disposed on a bottom surface of the main structure; and the at least two elastic connecting members including the first elastic portion a connecting member, a second elastic connecting member for connecting one end of the shaft core and the first magnetic connecting member, the second elastic connecting member for connecting the bottom surface of the bearing member and the second magnetic member
  • the third elastic connecting member is configured to connect the side of the carrier adjacent to the reflecting member and the side of the main structure, and the first elastic connecting member and the second elastic connecting member are located on the same axis.
  • the at least one axial core comprises a first axial core and a second axial core, the first axial core is wound with a first coil, the second axial core is wound with a second coil, and the first axial core and the second axial core are both disposed On the upper surface of the carrier.
  • the at least one elastic connecting member comprises a first elastic connecting member, a second elastic connecting member, a third elastic connecting member and a fourth elastic connecting member, wherein the first elastic connecting member is used for connecting the first side of the carrying member and the main structure a first side, a second elastic connecting member for connecting the second side of the carrier and a second side of the main structure, the third elastic connecting member for connecting the third side of the carrier and the third side of the main structure, the fourth An elastic connector for connecting the fourth side of the carrier and the fourth side of the main structure, wherein the first side and the third side of the main structure are oppositely disposed, the second of the main structure The side surface and the fourth side surface are oppositely disposed, wherein the first elastic connecting member and the third elastic connecting member are located on the first axis, and the second elastic connecting member and the fourth elastic connecting member are located On the second axis orthogonal to the first axis.
  • the at least one magnetic member comprises a first magnetic member and a second magnetic member disposed on the bottom plate of the main structure, the first magnetic member is disposed on one side of the first axial core, and the second magnetic member is disposed on the second axial core a side, wherein the first magnetic member and the first axial core are on the third axis, and the magnetic member and the second axial core are located at the fourth orthogonal to the third axis An axis, wherein the first axis is parallel to the second axis, and the second axis is parallel to the third axis.
  • the device controls the deflection angle of the reflector by the driving current and the stiffness of the elastic connecting member, and the deflection angle is greater than or equal to 1 degree.
  • Another technical solution adopted by the present invention is to provide a An adjustable laser projection device comprising the above described means for changing the optical path.
  • the invention has the beneficial effects that, when the driving current is input to the coil, the coil and the core drive the carrier to move in a direction toward or away from the magnetic member, so that the carrier drives the reflector to deflect.
  • the present invention controls the movement of the means for changing the optical path by driving current, thereby realizing a fast and accurate change of the optical path.
  • FIG. 1 is a schematic structural view of an apparatus for changing an optical path according to an embodiment of the present invention
  • Figure 2 is a top plan view of the apparatus for changing an optical path of Figure 1;
  • FIG. 3 is a schematic structural view of an apparatus for changing an optical path according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural view of an apparatus for changing an optical path according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an apparatus for changing an optical path according to another embodiment of the present invention.
  • FIG. 6 is a top plan view of an apparatus for changing an optical path according to another embodiment of the present invention.
  • Figure 7 is a block diagram showing the structure of an adjustable laser projection apparatus according to a first embodiment of the present invention.
  • FIG. 1 is a schematic structural view of an apparatus for changing an optical path according to a first embodiment of the present invention
  • FIG. 2 is a schematic top view of the apparatus for changing an optical path of FIG.
  • the apparatus 10 of the present embodiment is for changing the optical path of the outgoing light B, and can quickly and accurately direct the outgoing light B to the selected optical path.
  • the device 10 includes a main structure 11, at least one magnetic member 12, at least one shaft core 14, a coil 13 wound around the shaft core 14, a carrier 15, a reflector 16, and at least two elastic connectors 17.
  • at least one magnetic member 12 is fixed to the main structure 11, and the magnetic member 12 may be disposed on the surface of the main structure 11 close to the core 14, that is, the magnetic member 12 may be disposed on the side or bottom surface of the main structure 11 close to the core 14.
  • the magnetic member 12 can be a permanent magnet.
  • the carrier 15 is disposed at one end of the core 14 for carrying the core 14; the reflector 16 is disposed on the carrier 15 for reflecting the incident light A to obtain the outgoing light B; and the elastic connecting member 17 is for the carrier 15 It is fixed on the main structure 11.
  • the coil 13 and the core 14 drive the carrier 15 to move in a direction toward or away from the magnetic member 12.
  • the carrier 15 drives the reflecting member 16 to move together, and the reflecting member 16 deflects to change the outgoing light B.
  • the light path
  • At least one of the magnetic members 12 may include a first magnetic member 121 and a second magnetic member 122, and the first magnetic member 121 and the second magnetic member 122 are disposed on the bottom surface 111 of the main structure 11, the first magnetic The member 121 and the second magnetic member 122 are disposed adjacent to the core 14.
  • the at least one magnetic member 12 can be a magnetic member 12.
  • At least one of the shaft cores 14 may be a shaft core 14 , and the coil 13 is wound around the shaft core 14 .
  • the shape of the carrier 15 may be rectangular, square or circular, and the reflector 16 may be a mirror or a reflective layer disposed on the carrier 15.
  • the incident light A is reflected by the reflecting member 16 to obtain the outgoing light B, and the device 10 changes the optical path of the outgoing light B by changing the deflection angle of the reflecting member 16.
  • the at least one elastic connecting member 17 may include a first elastic connecting member 171 and a second elastic connecting member 172 for connecting one side surface 151 of the carrier member 15 and the first side surface 112 of the main structure 11, second
  • the elastic connecting member 172 is configured to connect the other side 152 of the carrier 15 and the second side 113 of the main structure 11.
  • the first side 112 is opposite to the second side 113, and the first elastic connecting member 171 and the second elastic connecting member are further disposed. 172 is used to secure the carrier 15 to the main structure 11.
  • the first elastic connecting member 171 and the second elastic connecting member 172 may be springs, and the first elastic connecting member 171 and the second elastic connecting member 172 are located on the same axis, and the first magnetic member 121 and the second magnetic member 122 are located on the same axis.
  • the axis is orthogonal to the axis in which the first elastic link 171 and the second elastic link 172 are located.
  • the first magnetic member 121 and the second magnetic member 122 each have a polarity, for example, the polarity of the first magnetic member 121 close to the coil 13 is S pole, the polarity of the first magnetic member 121 away from the coil 13 is N pole, and the second The polarity of the magnetic member 122 near the coil 13 is N pole, the polarity of the second magnetic member 122 away from the coil 13 is S pole, and the first magnetic member 121 and the second magnetic member 122 generate a magnetic field, and the direction of the magnetic field is the second magnetic member 122.
  • the N pole points to the S pole of the first magnetic member 121.
  • the coil 13 When the drive current I is input to the coil 13, the coil 13 generates a magnetic pole, and thus the coil 13 and the shaft core 14 Movement in a direction toward or away from the first magnetic member 121.
  • the coil 13 and the core 14 drive the carrier 15 to move in a direction away from the first magnetic member 121, that is, the coil 13 and the core 14 drive the carrier 15 along the direction.
  • the direction of movement of the second magnetic member 122; the polarity of one end of the coil 13 away from the carrier 15 is N pole, and the coil 13 and the core 14 drive the carrier 15 to move in the direction toward the first magnetic member 121.
  • the carrier 15 drives the reflector 16 to move together, and the reflector 16 deflects to change the optical path of the exiting light B.
  • the present embodiment by inputting the driving current I at the coil 13, the coil 13 and the axial core 14 drive the carrier 15 to move in a direction toward or away from the magnetic member 12, and the carrier 15 drives the reflector.
  • the deflection occurs, the deflection angle of the reflector 16 is adjusted by changing the size of the drive circuit 1, and the optical path of the outgoing light B is changed, so that the optical path can be changed quickly and accurately.
  • the invention further provides an apparatus for changing an optical path of another embodiment, which is described on the basis of means 10 for changing the optical path.
  • the driving current I input by the coil 13 is a step current, and the coil 13 generates a magnetic pole.
  • the coil 13, the core 14 and the carrier 15 move along the direction of the magnetic field; the carrier 15 passes through the first elastic connecting member.
  • the 171 and the second elastic connecting member 172 are coupled to the main structure 11, and the first elastic connecting member 171 and the second elastic connecting member 172 have a certain elastic force.
  • the reflecting member 16 deflects a certain deflection angle and reaches a steady state stop. Therefore, the device can control the deflection angle of the reflecting member 16 by the driving current I and the rigidity of the elastic connecting member 17.
  • the deflection angle can be greater than or equal to 1 degree, so that the optical path of the outgoing light B can be conveniently separated.
  • the incident light A of the embodiment takes the frame rate of the video signal as 60 frames as an example, and each frame includes a plurality of color segments.
  • the rise time required for the reflector 16 to reach the target deflection angle after receiving the input signal must be less than 1 ms; After the reflector 16 reaches the target deflection angle, the oscillation time of the coil 13, the core 14 and the carrier 15 must be less than 5% of the rise time.
  • the device calculates the magnetic force generated by the coil 13 at the input driving current I and the stiffness of the elastic connecting member 17 according to the above requirements. The specific calculation process is as follows:
  • J is the moment of inertia of the device
  • f is the damping coefficient
  • K is the torsional stiffness coefficient of the resilient connector 17
  • M is the torsional moment provided by the coil 13
  • ⁇ is the angle at which the reflector 16 is in steady state.
  • the rise time is:
  • the moment of inertia of the device needs to be relatively small, so the size setting of the reflecting member 16 is relatively small.
  • the present invention further provides an apparatus for changing an optical path of another embodiment, which is used for The device 10 for dimming the light is different in that the magnetic member 12 can be disposed on the side of the main structure 11 near the core 14 as shown in FIG. 3, that is, the first magnetic member 121 is disposed on the third side 114 of the main structure 11.
  • the second magnetic member 122 is disposed on the fourth side 115 of the main structure 11, wherein the third side and the fourth side are oppositely disposed, and the third side 114 is disposed adjacent to the first side 112 and the second side 113, respectively, and the fourth side 115 is disposed adjacent to the first side 112 and the second side 113, respectively.
  • the third side surface 114 and the fourth side surface 115 of the main structure 11 of the present embodiment are close to the core 14 so that the first magnetic member 121 and the first magnetic member 122 cannot be disposed on the bottom surface 111 of the main structure 11, so the first magnetic member 121 is disposed on the third side 114 of the main structure 11, and the second magnetic member 122 is disposed on the fourth side 115 of the main structure 11.
  • the present invention further provides an apparatus for changing an optical path of another embodiment, which is different from the apparatus 10 for changing an optical path in that, as shown in FIG. 4, the first elastic connecting member 371 of the present embodiment is used for connection carrying One end 351 of the member 35 and the first magnetic member 321 are used for connecting the other end 352 of the carrier 35 and the second magnetic member 322.
  • the first magnetic member 321 and the second magnetic member 322 are disposed on the main structure. On the opposite sides.
  • the present invention further provides an apparatus for changing an optical path of another embodiment, which is different from the apparatus 10 for changing an optical path in that, as shown in FIG. 5, at least one magnetic member 42 of the present embodiment includes a first magnetic The member 421 and the second magnetic member 422 are disposed on the top surface 411 of the main structure 41, and the second magnetic member 422 is disposed on the bottom surface 412 of the main structure 41.
  • the main structure 41 is provided with a through hole 414 above the reflecting member 46.
  • the at least one elastic connecting member 47 includes a first elastic connecting member 471 and a second elastic connecting member 472 and the third elastic connecting member 473, the first elastic connecting member 471 and the second elastic connecting member 472 are located on the same axis.
  • the first elastic connecting member 471 is used for connecting one end 441 of the shaft core 44 and the first magnetic member 421
  • the second elastic connecting member 472 is used for connecting the bottom surface 452 of the carrier 45 and the second magnetic member 422
  • the third elastic connection A member 473 is used to connect the carrier 45 to the side 451 of the reflector 46 and the side 413 of the main structure 41.
  • the polarity of the first magnetic member 421 close to the coil 43 is N pole, and the polarity of the second magnetic member 422 close to the coil 43 is S pole.
  • the coil 43 When the driving current is input to the coil 43, the coil 43 generates a magnetic pole, for example, the coil 43 is close to the first magnetic pole.
  • the polarity of the member 421 is S pole, and the coil 43 and the shaft core 44 drive the carrier 45 to move in the direction toward the first magnetic member 421; for example, the polarity of the coil 43 adjacent to the first magnetic member 421 is N pole, then the coil 43
  • the shaft core 44 drives the carrier 45 to move in a direction away from the first magnetic member 421.
  • This embodiment changes the optical path by driving the current control device, and can change the optical path quickly and accurately.
  • the present invention further provides an apparatus for changing an optical path of another embodiment, which is different from the apparatus 10 for changing an optical path in that, as shown in FIG. 6, at least one of the shaft cores 54 includes a first shaft core 541 and a
  • the two-axis core 542 is provided with a first coil 531 wound around the first shaft core 541, and a second coil 532 is wound around the second shaft core 542.
  • the first shaft core 541 and the second shaft core 542 are disposed on the carrier 55. On the surface 551.
  • the first axial core 541 and the second axial core 542 are respectively disposed at diagonal positions of the carrier 55, and the shape of the carrier 55 may be L-shaped.
  • the at least one elastic connecting member 57 includes a first elastic connecting member 571, a second elastic connecting member 572, a third elastic connecting member 573, and a fourth elastic connecting member 574, wherein the first The elastic connecting member 571 and the third elastic connecting member 573 are located on the first axis a1, and the second elastic connecting member 572 and the fourth elastic connecting member 574 are located on the second axis a2 orthogonal to the first axis a1 to realize the carrier 55 Accurate controllability during deflection.
  • the first elastic connecting member 571 is for connecting the first side surface 552 of the carrier 55 and the first side surface 511 of the main structure 51; the second elastic connecting member 572 is for connecting the second side surface 553 of the carrier 55 and the main structure 51. a second side 512; a third elastic connecting member 573 for connecting the third side 554 of the carrier 55 and the third side 513 of the main structure 51; and a fourth elastic connecting member 574 for connecting the fourth side 555 of the carrier 55 And a fourth side 514 of the main structure 51, wherein the first side 511 and the third side 513 of the main structure 51 are disposed opposite to each other, and the second side 512 and the fourth side 514 of the main structure 51 are oppositely disposed.
  • the at least one magnetic member 52 includes a first magnetic member 521 and a second magnetic member 522 disposed on the bottom plate 515 of the main structure 51.
  • the first magnetic member 521 is disposed adjacent to the fifth side 556 of the carrier 55, and the second magnetic member 522 is adjacent.
  • the sixth side 557 of the carrier 55 is disposed, wherein the first magnetic member 521 and the first core 541 are located on the third axis a3, and the second magnetic member 522 and the second core are located orthogonal to the third axis On the four axes a4, wherein the first axis a1 is parallel to the fourth axis a4, and the second axis a2 is parallel to the third axis a3.
  • the apparatus for changing the optical path of the present embodiment is capable of controlling the deflection of the reflector 56 in both directions to reduce the switching time of the reflector 56 when switching between two large steady-state angles.
  • the adjustable laser projection device of the embodiment comprises an excitation light source 61, a dichroic mirror 62, and a wavelength conversion device. And means 64 for changing the optical path, wherein the means 64 for changing the optical path is the means for changing the optical path disclosed in the above embodiments, and details are not described herein.
  • the excitation light source 61 is used to generate excitation light
  • the laser projection device comprises a plurality of different wavelength conversion devices 63, and the excitation light is applied to different wavelength conversion devices 63 to emit laser light of different wavelengths. That is, the device 64 for changing the optical path is controlled by a control signal (such as the driving current disclosed in the above embodiment) to change the optical path of the excitation light to guide the excitation light to the different wavelength conversion devices 63, thereby sequentially emitting different wavelengths.
  • a control signal such as the driving current disclosed in the above embodiment
  • the dichroic mirror 62 is used to combine different wavelengths of light onto the same optical path to form a projection light source.
  • the adjustable laser projection device of the embodiment may be an educational projector, a laser television or a micro-projection.
  • the present invention moves the coil, the shaft core and the carrier along the magnetic field direction of the magnetic member when the driving current is input to the coil, and the carrier drives the reflecting member to move together, and the reflecting member deflects to change the optical path of the reflected light.
  • the device for changing the optical path is controlled by the drive current to change the optical path, thereby enabling the optical path to be changed quickly and accurately.

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Abstract

一种用于改变光路的装置（10）及可调的激光投影装置。用于改变光路的装置（10）包括：主结构（11）；至少一个轴芯（14），以及缠绕设置在轴芯（14）上的线圈（13）；承载件（15），设置在轴芯（14）的一端，用于承载轴芯（14）；反射件（16），设置在承载件（15）上，用于反射入射光（A）；至少两个弹性连接件（17），弹性连接件（17）用于将承载件（15）固定在主结构（11）上；至少一个磁性件（12），设置在主结构（11）靠近轴芯（14）的表面上；在线圈（13）输入驱动电流时，线圈（13）和轴芯（14）带动承载件（15）沿朝向或者远离磁性件（12）的方向运动，使得承载件（15）带动反射件（16）产生偏转，以改变经反射件（16）反射后出射光（B）的光路。通过驱动电流控制用于改变光路的装置（10）的运动，实现快速和准确地改变光路。

Description

用于改变光路的装置及其可调的激光投影装置 技术领域
本发明涉及光路技术领域，特别是涉及用于改变光路的装置及其可调的激光投影装置。
背景技术
目前的光源系统包括激光光源和改变光路的装置，激光光源用于产生激发光，现有的改变光路的装置通过机械调节，以使得改变光路的装置能够改变激发光的光路。但机械调节改变光路的装置的速度慢，并且改变激发光的光路的准确性低。
发明内容
本发明主要解决的技术问题是提供一种用于改变光路的装置及其可调的激光投影装置，能够快速和准确地改变光路。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种用于改变光路的装置，其包括：主结构；至少一个轴芯，以及缠绕设置在所述轴芯上的线圈；承载件，设置在所述轴芯的一端，用于承载所述轴芯；反射件，设置在所述承载件上，用于反射入射光；至少两个弹性连接件，所述弹性连接件用于将所述承载件固定在所述主结构上；至少一个磁性件，设置在所述主结构靠近所述轴芯的表面上；在所述线圈输入驱动电 流时，所述线圈和所述轴芯带动所述承载件沿朝向或者远离所述磁性件的方向运动，使得所述承载件带动所述反射件产生偏转，以改变经所述反射件反射后出射光的光路。
其中，至少两个弹性连接件包括第一弹性连接件和第二弹性连接件，第一弹性连接件用于连接承载件的一端和主结构的第一侧面，第二弹性连接件用于连接承载件的另一端和主结构的第二侧面，第一侧面与第二侧面相对设置，第一弹性连接件和第二弹性连接件位于同一轴线上。
其中，至少一个磁性件包括第一磁性件和第二磁性件，第一磁性件和第二磁性件设置在主结构的底面，第一磁性件和第二磁性件所在的轴线与第一弹性连接件和第二弹性连接件所在的轴线正交。
其中，至少一个磁性件包括第一磁性件和第二磁性件，第一磁性件设置在主结构的第三侧面，第二磁性件设置在主结构的第四侧面，第三侧面和第四侧面相对设置，第一磁性件和第二磁性件所在的轴线与第一弹性连接件和第二弹性连接件所在的轴线正交。
其中，至少一个磁性件包括第一磁性件和第二磁性件，第一磁性件设置在主结构的顶面，第二磁性件设置在主结构的底面；至少两个弹性连接件包括第一弹性连接件、第二弹性连接件和第三弹性连接件，第一弹性连接件用于连接轴芯的一端和第一磁性件，第二弹性连接件用于连接承载件的底面和第二磁性件，第三弹性连接件用于连接承载件靠近反射件的侧面和主结构的侧面，第一弹性连接件和第二弹性连接件位于同一轴线上。
其中，至少一个轴芯包括第一轴芯和第二轴芯，第一轴芯缠绕设置有第一线圈，第二轴芯缠绕设置有第二线圈，第一轴芯和第二轴芯均设置在承载件的上表面上。
其中，至少一个弹性连接件包括第一弹性连接件、第二弹性连接件、第三弹性连接件以及第四弹性连接件，第一弹性连接件用于连接承载件的第一侧面和主结构的第一侧面，第二弹性连接件用于连接承载件的第二侧面和主结构的第二侧面，第三弹性连接件用于连接承载件的第三侧面和主结构的第三侧面，第四弹性连接件用于连接承载件的第四侧面和和主结构的第四侧面，其中所述主结构的所述第一侧面和所述第三侧面相对设置，所述主结构的所述第二侧面和所述第四侧面相对设置，其中所述第一弹性连接件和所述第三弹性连接件位于所述第一轴线上，所述第二弹性连接件和所述第四弹性连接件位于与所述第一轴线正交的所述第二轴线上。
其中，至少一个磁性件包括设置在主结构的底板上的第一磁性件和第二磁性件，第一磁性件设置在第一轴芯的一侧，第二磁性件设置在第二轴芯的一侧，其中所述第一磁性件和所述第一轴芯位于所述第三轴线上，所述磁性件和所述第二轴芯位于与所述第三轴线正交的所述第四轴线上，其中所述第一轴线与所述第二轴线平行，所述第二轴线和所述第三轴线平行。。
其中，装置通过驱动电流和弹性连接件的刚度控制反射件的偏转角度，偏转角度大于或者等于1度。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种 可调的激光投影装置，其包括上述用于改变光路的装置。
本发明的有益效果是：区别于现有技术的情况，本发明通过在线圈输入驱动电流时，线圈和轴芯带动承载件沿朝向或者远离磁性件的方向运动，使得承载件带动反射件产生偏转，以改变经反射件反射后出射光的光路，本发明通过驱动电流控制用于改变光路的装置的运动，实现快速和准确地改变光路。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要采用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是本发明一实施例的用于改变光路的装置的结构示意图；
图2是图1中用于改变光路的装置的俯视示意图；
图3是本发明另一实施例的用于改变光路的装置的结构示意图
图4是本发明另一实施例的用于改变光路的装置的结构示意图；
图5是本发明另一实施例的用于改变光路的装置的结构示意图；
图6是本发明另一实施例的用于改变光路的装置的俯视示意图；
图7是本发明第一实施例的可调的激光投影装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案 进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参见图1-2所示，图1是本发明第一实施例的用于改变光路的装置的结构示意图；图2是图1中用于改变光路的装置的俯视示意图。本实施例的装置10用于改变出射光B的光路，能够快速和准确地将出射光B引导到所选择的光路上。
其中，装置10包括主结构11、至少一个磁性件12、至少一个轴芯14、缠绕设置在轴芯14上的线圈13、承载件15、反射件16以及至少两个弹性连接件17。其中，至少一个磁性件12固定在主结构11，磁性件12可以设置在主结构11靠近轴芯14的表面上，即磁性件12可以设置在主结构11靠近轴芯14的侧面或者底面上。其中，磁性件12可为永久磁铁。承载件15设置在轴芯14的一端，用于承载轴芯14；反射件16设置在承载件15上，用于反射入射光A，得到出射光B；弹性连接件17用于将承载件15固定在主结构11上。在线圈13输入驱动电流时，线圈13和轴芯14带动承载件15沿朝向或者远离磁性件12的方向运动，承载件15带动反射件16一起运动，反射件16产生偏转，以改变出射光B的光路。
本实施例以磁性件12设置在主结构11的底面为例进行说明。如图2所示，至少一个磁性件12可以包括第一磁性件121和第二磁性件122，第一磁性件121和第二磁性件122设置在主结构11的底面111，第一磁 性件121和第二磁性件122靠近轴芯14设置。在其他实施例，至少一个磁性件12可以为一个磁性件12。
其中，至少一个轴芯14可为一个轴芯14，线圈13缠绕设置在轴芯14上。承载件15的形状可为长方形、正方形或者圆形，反射件16可为反射镜或者设置在承载件15上的反射层。入射光A通过反射件16反射后，得到出射光B，装置10通过改变反射件16的偏转角度进而改变出射光B的光路。
至少一个弹性连接件17可包括第一弹性连接件171和第二弹性连接件172，第一弹性连接件171用于连接承载件15的一侧面151和主结构11的第一侧面112，第二弹性连接件172用于连接承载件15的另一侧面152和主结构11的第二侧面113，第一侧面112与第二侧面113相对设置，进而第一弹性连接件171和第二弹性连接件172用于将承载件15固定在主结构11上。其中，第一弹性连接件171和第二弹性连接件172可为弹簧，第一弹性连接件171和第二弹性连接件172位于同一轴线上，第一磁性件121和所述第二磁性件122所在的轴线与所述第一弹性连接件171和所述第二弹性连接件172所在的轴线正交。
由于第一磁性件121和第二磁性件122均具有极性，例如第一磁性件121靠近线圈13的极性为S极，第一磁性件121远离线圈13的极性为N极，第二磁性件122靠近线圈13的极性为N极，第二磁性件122远离线圈13的极性为S极，第一磁性件121和第二磁性件122产生磁场，磁场方向由第二磁性件122的N极指向第一磁性件121的S极。在线圈13输入驱动电流I时，线圈13产生磁极，因此线圈13和轴芯14 沿朝向或者远离第一磁性件121的方向运动。例如线圈13远离承载件15的一端极性为S极，则线圈13和轴芯14带动承载件15沿远离第一磁性件121的方向运动，即线圈13和轴芯14带动承载件15沿朝向第二磁性件122的方向运动；线圈13远离承载件15的一端极性为N极，则线圈13和轴芯14带动承载件15沿朝向第一磁性件121的方向运动。承载体15带动反射件16一起运动，反射件16产生偏转，以改变出射光B的光路。
相对于现有技术通过机械调节光路，本实施例通过在线圈13输入驱动电流I，线圈13和轴芯14带动承载件15沿朝向或远离磁性件12的方向运动，进而承载件15带动反射体16发生偏转，通过改变驱动电路I的大小调整反射体16的偏转角度，改变出射光B的光路，能够实现快速和准确地改变光路。
本发明进一步提供另一实施例的用于改变光路的装置，其在用于改变光路的装置10的基础上进行描述。其中，线圈13输入的驱动电流I为阶跃电流，线圈13产生磁极，在磁力的作用下，线圈13、轴芯14和承载件15沿着磁场方向运动；承载件15通过第一弹性连接件171和第二弹性连接件172连接到主结构11，第一弹性连接件171和第二弹性连接件172具有一定的弹力。在磁力和弹力的共同作用下，反射件16偏转一定的偏转角度后达到稳态停止下来。因此，装置可以通过驱动电流I和弹性连接件17的刚度控制反射件16的偏转角度。
其中，偏转角度可以大于或者等于1度，进而能够方便分开出射光B的光路。
本实施例的入射光A以视频信号的帧率为60帧为例，每帧包括多种色段，反射件16在接收输入信号后到达目标偏转角度时所需的上升时间必须小于1ms；在反射件16到达目标偏转角度后，线圈13、轴芯14和承载件15的震荡时间必须小于上升时间的5％。装置根据上述要求计算出线圈13在输入的驱动电流I时所产生的磁力和弹性连接件17的刚度，具体计算过程如下：
将整个装置作为典型的二阶系统，满足以下公式：
Jθ＝fθ+kθ+M                                      (1)
其中，J是装置的转动惯量；f是阻尼系数；K是弹性连接件17的扭转刚度系数；M是线圈13提供的扭转力矩；θ是反射件16处于稳态时的角度。
对公式(1)进行拉氏变换得到：
Figure PCTCN2017114715-appb-000001
根据公式(2)可得上升时间为：
Figure PCTCN2017114715-appb-000002
根据公式(2)可得震荡超调量公式为：
Figure PCTCN2017114715-appb-000003
根据上述公式可知，装置的转动惯量需要比较小，因此反射件16的尺寸设置比较小。
本发明进一步提供另一实施例的用于改变光路的装置，其与用于改 变光路的装置10的不同之处在于：如图3所示，磁性件12可以设置在主结构11靠近轴芯14的侧面上，即第一磁性件121设置在主结构11的第三侧面114，第二磁性件122设置在主结构11的第四侧面115，其中第三侧面和第四侧面相对设置，第三侧面114分别与第一侧面112和第二侧面113相邻设置，第四侧面115分别与第一侧面112和第二侧面113相邻设置。
本实施例主结构11的第三侧面114和第四侧面115与轴芯14距离近，导致第一磁性件121和第一磁性件122无法设置在主结构11的底面111，因此第一磁性件121设置在主结构11的第三侧面114，第二磁性件122设置在主结构11的第四侧面115。
本发明进一步提供另一实施例的用于改变光路的装置，其与用于改变光路的装置10的不同之处在于：如图4所示，本实施例第一弹性连接件371用于连接承载件35的一端351和第一磁性件321，第二弹性连接件372用于连接承载件35的另一端352和第二磁性件322，第一磁性件321和第二磁性件322设置在主架构相对的两个侧面上。
本发明进一步提供另一实施例的用于改变光路的装置，其与用于改变光路的装置10的不同之处在于，如图5所示，本实施例的至少一个磁性件42包括第一磁性件421和第二磁性件422，第一磁性件421设置在主结构41的顶面411，第二磁性件422设置在主结构41的底面412。为了避免阻挡入射光A和反射光B，主结构41位于反射件46上方设置有通孔414。
至少一个弹性连接件47包括第一弹性连接件471、第二弹性连接件 472和第三弹性连接件473，第一弹性连接件471和第二弹性连接件472位于同一轴线上，。其中，第一弹性连接件471用于连接轴芯44的一端441和第一磁性件421，第二弹性连接件472用于连接承载件45的底面452和第二磁性件422，第三弹性连接件473用于连接承载件45靠近反射件46的侧面451和主结构41的侧面413。
以下详细描述下本实施例装置的工作原理：
第一磁性件421靠近线圈43的极性为N极，第二磁性件422靠近线圈43的极性为S极，在线圈43输入驱动电流时，线圈43产生磁极，例如线圈43靠近第一磁性件421的极性为S极，则线圈43和轴芯44带动承载件45沿朝向第一磁性件421的方向运动；例如线圈43靠近第一磁性件421的极性为N极，则线圈43和轴芯44带动承载件45沿远离第一磁性件421的方向运动。
本实施例通过驱动电流控制装置改变光路，并且能够快速和准确地改变光路。
本发明进一步提供另一实施例的用于改变光路的装置，其与用于改变光路的装置10的不同之处在于，如图6所示，至少一个轴芯54包括第一轴芯541和第二轴芯542，第一轴芯541缠绕设置有第一线圈531，第二轴芯542缠绕设置有第二线圈532，第一轴芯541和第二轴芯542均设置在承载件55的上表面551上。其中，第一轴芯541和第二轴芯542分别设置在承载件55的对角位置，该承载件55的形状可以为L型。
其中，至少一个弹性连接件57包括第一弹性连接件571、第二弹性连接件572、第三弹性连接件573以及第四弹性连接件574，其中第一 弹性连接件571和第三弹性连接件573位于第一轴线a1上，第二弹性连接件572和第四弹性连接件574位于与第一轴线a1正交的第二轴线a2上，以实现承载件55在偏转过程中的准确可控性。
其中，第一弹性连接件571用于连接承载件55的第一侧面552和主结构51的第一侧面511；第二弹性连接件572用于连接承载件55的第二侧面553和主结构51的第二侧面512；第三弹性连接件573用于连接承载件55的第三侧面554和主结构51的第三侧面513；第四弹性连接件574用于连接承载件55的第四侧面555和和主结构51的第四侧面514，其中主结构51的第一侧面511和第三侧面513相对设置，主结构51的第二侧面512和第四侧面514相对设置。
至少一个磁性件52包括设置在主结构51的底板515上的第一磁性件521和第二磁性件522，第一磁性件521靠近承载件55的第五侧面556设置，第二磁性件522靠近承载件55的的第六侧面557设置，其中第一磁性件521和第一轴芯541位于第三轴线a3上，第二磁性件522和第二轴芯位于与第三轴芯正交的第四轴线a4上，其中第一轴线a1与第四轴线a4平行，第二轴线a2和第三轴线a3平行。
在反射件56需要在两个稳态角之间切换时，由于两个稳态角之间的角度差较大，导致上升时间较长，震荡大。因此本实施例用于改变光路的装置能够控制反射件56在两个方向上分别偏转，来减少反射件56在两个较大稳态角之间切换时的切换时间。
本发明还提供了一种可调的激光投影装置，如图7所示，本实施例的可调的激光投影装置包括激发光源61、二向色镜62、波长转换装置 63以及用于改变光路的装置64，其中用于改变光路的装置64为上述实施例所揭示的用于改变光路的装置，在此不再赘述。
其中，激发光源61用于产生激发光，激光投影装置包括多个不同的波长转换装置63，激发光打到不同的波长转换装置63上可以发射出不同波长的受激光。即通过控制信号(例如上述实施例所揭示的驱动电流)控制用于改变光路的装置64来改变激发光的光路，以引导激发光打到不同的波长转换装置63上，进而时序地发出不同波长的受激光。二向色镜62用于将不同波长的光合到同一光路上射出，进而形成投影光源。
其中，本实施例的可调的激光投影装置可为教育投影仪、激光电视或者微投等。
综上所述，本发明通过在线圈输入驱动电流时，线圈、轴芯和承载件沿着磁性件的磁场方向运动，承载件带动反射件一起运动，反射件产生偏转，以改变反射光的光路，通过驱动电流控制用于改变光路的装置改变光路，进而能够快速和准确地改变光路。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种用于改变光路的装置，其特征在于，所述装置包括：
    主结构；
    至少一个轴芯，以及缠绕设置在所述轴芯上的线圈；
    承载件，设置在所述轴芯的一端，用于承载所述轴芯；
    反射件，设置在所述承载件上，用于反射入射光；
    至少两个弹性连接件，所述弹性连接件用于将所述承载件固定在所述主结构上；
    至少一个磁性件，设置在所述主结构靠近所述轴芯的表面上；
    在所述线圈输入驱动电流时，所述线圈和所述轴芯带动所述承载件沿朝向或者远离所述磁性件的方向运动，使得所述承载件带动所述反射件产生偏转，以改变经所述反射件反射后出射光的光路。
  2. 根据权利要求1所述的用于改变光路的装置，其特征在于，所述至少两个弹性连接件包括第一弹性连接件和第二弹性连接件，所述第一弹性连接件用于连接所述承载件的一端和所述主结构的第一侧面，所述第二弹性连接件用于连接所述承载件的另一端和所述主结构的第二侧面，所述第一侧面与所述第二侧面相对设置，所述第一弹性连接件和所述第二弹性连接件位于同一轴线上。
  3. 根据权利要求2所述的用于改变光路的装置，其特征在于，所述至少一个磁性件包括第一磁性件和第二磁性件，所述第一磁性件和所述第二磁性件设置在所述主结构的底面，所述第一磁性件和所述第二磁性 件所在的轴线与所述第一弹性连接件和所述第二弹性连接件所在的轴线正交。
  4. 根据权利要求2所述的用于改变光路的装置，其特征在于，所述至少一个磁性件包括第一磁性件和第二磁性件，所述第一磁性件设置在所述主结构的第三侧面，所述第二磁性件设置在所述主结构的第四侧面，所述第三侧面和所述第四侧面相对设置，所述第一磁性件和所述第二磁性件所在的轴线与所述第一弹性连接件和所述第二弹性连接件所在的轴线正交。
  5. 根据权利要求1所述的用于改变光路的装置，其特征在于，所述至少一个磁性件包括第一磁性件和第二磁性件，所述第一磁性件设置在所述主结构的顶面，所述第二磁性件设置在所述主结构的底面；
    所述至少两个弹性连接件包括第一弹性连接件、第二弹性连接件和第三弹性连接件，所述第一弹性连接件用于连接所述轴芯的一端和所述第一磁性件，所述第二弹性连接件用于连接所述承载件的底面和所述第二磁性件，所述第三弹性连接件用于连接所述承载件靠近所述反射件的侧面和所述主结构的侧面，其中所述第一弹性连接件和所述第二弹性连接件位于同一轴线上。
  6. 根据权利要求1所述的用于改变光路的装置，其特征在于，所述至少一个轴芯包括第一轴芯和第二轴芯，所述第一轴芯缠绕设置有第一线圈，所述第二轴芯缠绕设置有第二线圈，所述第一轴芯和所述第二轴芯均设置在所述承载件的上表面上。
  7. 根据权利要求6所述的用于改变光路的装置，其特征在于，所述 至少一个弹性连接件包括第一弹性连接件、第二弹性连接件、第三弹性连接件以及第四弹性连接件，所述第一弹性连接件用于连接所述承载件的第一侧面和所述主结构的第一侧面，所述第二弹性连接件用于连接所述承载件的第二侧面和所述主结构的第二侧面，所述第三弹性连接件用于连接所述承载件的第三侧面和所述主结构的第三侧面，所述第四弹性连接件用于连接所述承载件的第四侧面和和所述主结构的第四侧面，其中所述主结构的所述第一侧面和所述第三侧面相对设置，所述主结构的所述第二侧面和所述第四侧面相对设置，其中所述第一弹性连接件和所述第三弹性连接件位于所述第一轴线上，所述第二弹性连接件和所述第四弹性连接件位于与所述第一轴线正交的所述第二轴线上。
  8. 根据权利要求7所述的用于改变光路的装置，其特征在于，所述至少一个磁性件包括设置在主结构的底板上的第一磁性件和第二磁性件，所述第一磁性件设置在所述第一轴芯的一侧，所述第二磁性件设置在所述第二轴芯的一侧，其中所述第一磁性件和所述第一轴芯位于所述第三轴线上，所述磁性件和所述第二轴芯位于与所述第三轴线正交的所述第四轴线上，其中所述第一轴线与所述第二轴线平行，所述第二轴线和所述第三轴线平行。
  9. 根据权利要求1-8任一所述的用于改变光路的装置，其特征在于，通过所述驱动电流和所述弹性连接件的刚度控制所述反射件的偏转角度，所述偏转角度大于或者等于1度。
  10. 一种可调的激光投影装置，其特征在于，所述激光投影装置包括如权利要求1-9任一所述的用于改变光路的装置。
PCT/CN2017/114715 2017-07-20 2017-12-06 用于改变光路的装置及其可调的激光投影装置 Ceased WO2019015219A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1499230A (zh) * 2002-10-24 2004-05-26 Lg������ʽ���� 光开关
US20070115526A1 (en) * 2005-11-22 2007-05-24 Canon Kabushiki Kaisha Oscillating device, optical deflector and method of controlling the same
CN106324959A (zh) * 2015-07-01 2017-01-11 中强光电股份有限公司 振荡透镜模块及投影装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1499230A (zh) * 2002-10-24 2004-05-26 Lg������ʽ���� 光开关
US20070115526A1 (en) * 2005-11-22 2007-05-24 Canon Kabushiki Kaisha Oscillating device, optical deflector and method of controlling the same
CN106324959A (zh) * 2015-07-01 2017-01-11 中强光电股份有限公司 振荡透镜模块及投影装置

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