WO2022078086A1 - 一种小变形高基频拓扑结构超高速摄影仪用转镜 - Google Patents

一种小变形高基频拓扑结构超高速摄影仪用转镜 Download PDF

Info

Publication number
WO2022078086A1
WO2022078086A1 PCT/CN2021/115254 CN2021115254W WO2022078086A1 WO 2022078086 A1 WO2022078086 A1 WO 2022078086A1 CN 2021115254 W CN2021115254 W CN 2021115254W WO 2022078086 A1 WO2022078086 A1 WO 2022078086A1
Authority
WO
WIPO (PCT)
Prior art keywords
holes
rotating mirror
hole assembly
mirror
fundamental frequency
Prior art date
Application number
PCT/CN2021/115254
Other languages
English (en)
French (fr)
Inventor
李春波
黎炫臻
文银晨
吴旭
杨灿
吕启涛
Original Assignee
深圳技术大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳技术大学 filed Critical 深圳技术大学
Publication of WO2022078086A1 publication Critical patent/WO2022078086A1/zh

Links

Classifications

    • 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
    • G02B26/12—Scanning systems using multifaceted mirrors
    • 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
    • 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
    • G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
    • 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
    • G03B39/00—High-speed photography
    • 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
    • G03B39/00—High-speed photography
    • G03B39/04—High-speed photography using moving plate or film

Definitions

  • the invention relates to the technical field of ultra-high-speed cameras, and more particularly to a rotating mirror for ultra-high-speed cameras with small deformation and high fundamental frequency topology structure.
  • the rotating mirror is the core component of the rotating mirror ultra-high-speed camera.
  • the structure and mechanical properties of the rotating mirror directly determine the temporal resolution, spatial resolution, imaging quality and operational reliability of the ultra-high-speed camera.
  • the intermediate image of the system is formed near the rotating mirror, and the rotating mirror plays the dual role of field mirror and high-speed scanning mirror at the same time.
  • the rotating mirror plays the dual role of projection mirror and high-speed scanning mirror at the same time.
  • the time resolution of the ultra-high-speed camera system is proportional to the rotation speed of the rotating mirror.
  • the higher the rotation speed the higher the time resolution of the ultra-high-speed camera system.
  • the first-order critical limit speed of the rotating mirror is related to the material and structure of the rotating mirror, which is generally between 200,000 and 400,000 rpm.
  • the small size of the rotating mirror can also achieve the purpose of improving the first-order critical limit speed and time resolution of the rotating mirror.
  • the reduction of the external structure size of the rotating mirror is bound to reduce the frame size of the ultra-high-speed camera and reduce its spatial resolution.
  • the lateral deformation of the rotating mirror will distort the image, which directly affects the imaging quality of the ultra-high-speed camera.
  • the present invention provides a small deformation high fundamental frequency topology structure ultra-high-speed camera rotating mirror, on the basis of not changing the original mirror surface size of the rotating mirror, the maximum lateral deformation of the mirror surface From the original 1.191 ⁇ 10 -6 mm to 0.654 ⁇ 10 -6 mm, the maximum lateral deformation of the triangular end face is 54.9% of the original structure, a reduction of 45.1%, which can effectively improve the imaging quality of the ultra-high-speed camera.
  • the fundamental frequency of the rotating mirror is 8876.3 Hz, which is an increase of 532.1 Hz compared with the original structure of 8344.2 Hz.
  • the first-order critical limit speed of the rotating mirror is increased by 31926 rpm, which is 6% higher than the original, which can improve the ultra-high speed to a certain extent.
  • the time resolution of the camera is 8876.3 Hz, which is an increase of 532.1 Hz compared with the original structure of 8344.2 Hz.
  • a small deformation high fundamental frequency topology structure ultra-high-speed camera rotating mirror the rotating mirror is an equal triangular prism structure, including three rectangular mirrors of the same size and two There are two equilateral triangle end faces of the same size, the long sides of the three rectangular mirrors are enclosed in pairs, the enclosed long sides form the edges of the rotating mirror, and the wide sides of the three rectangular mirrors are enclosed to form two
  • the end face of an equilateral triangle the rotating mirror also includes three identical topological structures that are symmetrical about the three angle bisectors of the end face of the equilateral triangle, and a single topological structure includes a combination of first through holes symmetrically arranged along the angle bisectors in turn body, the second through hole assembly and the third through hole assembly, the through holes in the first through hole assembly, the second through hole assembly and the third through hole assembly have the same size and shape and the respective through holes have the same spacing.
  • the first through-hole assembly is formed on the outermost side of the angle bisector, and includes 8 through-holes, one through-hole in the first row and two through-holes in the second row in order from the apex to the farthest.
  • the number of 3 through holes in the third row and the number of 2 through holes in the fourth row are arranged at equal intervals.
  • the second through-hole assembly is formed on the side of the first through-hole assembly away from the apex of the end face of the equilateral triangle, and includes 19 through-holes, which are arranged in order from near to far from the first through-hole assembly.
  • the third through-hole assembly is formed on the side of the second through-hole assembly away from the first through-hole assembly, and includes three through-holes that are formed on both sides of the angle bisector and are linearly arranged, The line formed by the center points of the three through holes on one side and the angle bisector are arranged at an angle of 30°.
  • the cross section of the through hole in the topological structure is an equal hexagon with a circumscribed radius of 0.4 mm, and there is a transition edge with a fillet radius of 0.02 mm between adjacent two sides of the equal hexagon.
  • the edges with the closest distance between the two adjacent through holes in the topology structure are arranged in parallel, and the distance between the parallel edges is 0.11 mm.
  • the center-to-center distance between two adjacent through holes is 0.69 mm.
  • the volume of the rotating mirror is 3424.5 mm 3
  • the radius of the circumcircle of the end face of the equilateral triangle is 13.83 mm.
  • the rotating mirror is provided with a central hole, the central hole is arranged through two equilateral triangle end faces, and the central point of the central hole is arranged to coincide with the central point of the equilateral triangular end faces.
  • the diameter of the central hole is 6 mm.
  • the rigidity from the edge to the center line of the rotating mirror and the rigidity from the mirror surface to the center line can be trended.
  • the deformation of the mirror surface is reduced, and the fundamental frequency of the rotating mirror is improved;
  • the size and shape of the through holes are the same, which makes the processing technology of the rotating mirror simpler;
  • the through hole is an equal hexagon with a circumscribed circle radius of 0.4mm, and there is a transition edge with a fillet radius of 0.02mm between the adjacent two sides of the equal hexagon, which can increase the rigidity of the mirror surface to the center of the rotating mirror. And the stiffness from the edge to the center reaches a relative balance, so that the relative lateral deformation of the mirror surface is reduced;
  • the edges with the closest distance between the two adjacent through holes are arranged in parallel, and the distance between the parallel edges is 0.11mm, so as to improve the rigidity of the structure from the edge of the turning mirror to the central part of the turning mirror, thereby improving the turning
  • the fundamental frequency of the mirror can achieve the dual purpose of reducing the deformation of the mirror surface and increasing the fundamental frequency.
  • Fig. 1 is a kind of three-dimensional structure schematic diagram of the rotating mirror of a kind of small deformation high fundamental frequency topology structure ultra-high-speed camera of the present invention
  • Fig. 2 is a kind of small deformation high fundamental frequency topology structure ultra-high-speed camera with the rotating mirror the structural representation of the middle triangle end face of the present invention
  • FIG. 3 is a schematic diagram of an enlarged structure of a topology structure in a rotating mirror for a small deformation high fundamental frequency topology structure ultra-high-speed camera of the present invention
  • Fig. 4 is the curve of the lateral deformation amount of the mirror surface of the rotating mirror of a kind of small deformation high fundamental frequency topology structure ultra-high-speed camera of the present invention
  • FIG. 5 is a curve of the lateral deformation of the mirror surface of the rotating mirror used in the ultra-high-speed camera in the prior art.
  • first”, “second” and “third” are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first”, “second”, “third” may expressly or implicitly include one or more of that feature.
  • “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and “arranged” should be understood in a broad sense, for example, it may be a fixed connection or a It can be a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction between the two elements. .
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • an embodiment of the present invention provides a small deformation high fundamental frequency topology structure ultra-high-speed camera rotating mirror
  • the rotating mirror is an equitriangular prism structure, which includes three rectangles of the same size.
  • the long sides of the three rectangular mirror surfaces 100 are enclosed and arranged in pairs, the enclosed long sides form the edges of the rotating mirror, and the wide sides of the three rectangular mirror surfaces 100 are enclosed to form two equilateral triangles
  • the end surface 200, the space enclosed by the rectangular mirror surface 100 and the equilateral triangle end surface 200 is the main structure of the rotating mirror, and the rotating mirror can be made of aluminum alloy, but is not limited thereto.
  • the rotating mirror is provided with a central hole 300, the central hole 300 is provided with two equilateral triangular end faces 200, and the central point of the central hole 300 is arranged to coincide with the central point of the equilateral triangular end face 200.
  • a rotating shaft (not shown in the figure) may be provided, the rotating mirror is installed in the obscura of the ultra-high-speed camera through the rotating shaft, and the rotating shaft drives the rotating shaft to rotate.
  • the radius of the circumscribed circle of the equilateral triangle end face 200 is 13.83 mm
  • the diameter of the central hole 300 is 6 mm.
  • the rotating mirror also includes three identical topological structures 400 that are symmetrical about the three angle bisectors A of the equilateral triangle end face 200, and a single topological structure 400 includes a first through hole combination that is symmetrically arranged along the angle bisector A in turn. body 410 , the second through hole assembly 420 and the third through hole assembly 430 , the size and shape of the through holes in the first through hole assembly 410 , the second through hole assembly 420 and the third through hole assembly 430
  • the above-mentioned configuration of the topology structure 400 can make the stiffness of the mirror edge to the center line and the mirror surface to the center line tend to balance, so that the mirror surface deformation is reduced, while improving. the fundamental frequency of the mirror.
  • the size and shape of the through holes are the same, which makes the processing technology of the rotating mirror simpler.
  • the first through-hole assembly 410 is formed at the outermost side of the angle bisector A, close to the apex of the equilateral triangle end face 200 , and the first through-hole assembly 410 includes 8 through holes, which are far from the apex. From near to far, one through hole in the first row, two through holes in the second row, three through holes in the third row and two through holes in the fourth row are arranged at equal intervals.
  • the second through hole assembly 420 is formed on the side of the first through hole assembly 410 away from the apex of the equilateral triangle end face 200 , and the second through hole assembly 420 includes 19 through holes, which are far from the first through hole.
  • the hole assembly 410 has three through holes in the first row, 4 through holes in the second row, 5 through holes in the third row, 4 through holes in the fourth row, and 3 through holes in the fifth row from near to far.
  • the numbers are arranged at equal intervals.
  • the third through-hole assembly 430 is formed on the side of the second through-hole assembly 420 away from the first through-hole assembly 410, and includes three through-holes that are respectively formed on both sides of the angle bisector A and are linearly arranged. , the line formed by the center points of the three through holes on one side and the angle bisector A are arranged at an angle of 30°.
  • the number of the respective through holes and the arrangement of the combined shapes in the first through hole assembly 410, the second through hole assembly 420 and the third through hole assembly 430 can reduce the sealing of the material of this part of the assembly and the structure of this part of the assembly. stiffness.
  • the cross-section of the through hole in the topological structure 400 is an equal hexagon with a circumscribed circle radius of 0.4 mm, and the adjacent two sides of the equal hexagon also have a fillet with a radius of 0.02 mm.
  • the transition edge can achieve a relative balance between the rigidity from the mirror surface to the center of the rotating mirror and the rigidity from the edge to the center, so that the relative lateral deformation of the mirror surface is reduced.
  • the edges with the closest distance between two adjacent through holes in the topology structure 400 are arranged in parallel, and the distance between the parallel edges is 0.11 mm, so as to improve the turning mirror edge
  • the rigidity of the structure from the edge to the center of the rotating mirror increases the fundamental frequency of the rotating mirror, and achieves the dual purpose of reducing the deformation of the mirror surface and increasing the fundamental frequency. More preferably, the center-to-center distance between two adjacent through holes is 0.69 mm.
  • the volume of the rotating mirror is 3424.5 mm 3
  • the volume of the rotating mirror in the prior art is 4576.61 mm 3
  • the structural quality of the rotating mirror is reduced to 75% of the existing one, which effectively improves the The fundamental frequency of the mirror.
  • the included angles between the axes of the through holes in the topology structure 400 are 60° and 120° respectively, and the setting of these two angles corresponds to the angles of the rotating mirror and the included angle between the axes of the rotating mirror Consistent.
  • the rotating mirror according to the embodiment of the present invention on the basis of not changing the original mirror surface size of the rotating mirror, the maximum lateral deformation of the mirror surface is reduced from the original 1.191 ⁇ 10 -6 mm to 0.654 ⁇ 10 mm -6 mm, the maximum lateral deformation of the triangular end face is 54.9% of the original structure, which is reduced by 45.1%, which can effectively improve the imaging quality of the ultra-high-speed camera.
  • the fundamental frequency of the rotating mirror in the embodiment of the present invention is 8876.3 Hz, which is 532.1 Hz higher than that of the original structure of 8344.2 Hz, and the first-order critical limit rotational speed of the rotating mirror is increased by 31926 rpm, which is 6% higher than the original one. to improve the temporal resolution of ultra-high-speed cameras.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

本发明公开了一种小变形高基频拓扑结构超高速摄影仪用转镜，为等三棱柱体型结构，包括三个大小相同的矩形镜面和两个大小相同的等边三角形端面，三个矩形镜面的长边两两围合设置，三个矩形镜面的宽边围合形成两个等边三角形端面，还包括三个相同的分别关于等边三角形端面的三条角平分线对称的拓扑结构，单个拓扑结构包括依次沿角平分线对称设置的第一通孔组合体、第二通孔组合体和第三通孔组合体，第一通孔组合体、第二通孔组合体和第三通孔组合体中的通孔大小形状相同且各自的通孔之间具有相同间距，可以使转镜棱边到中心线的刚度和镜面到中心线的刚度趋于平衡，从而使镜面变形减小，同时提高了转镜的基频加工工艺更加简单。

Description

一种小变形高基频拓扑结构超高速摄影仪用转镜 技术领域
本发明涉及超高速摄影仪技术领域，更具体地涉及一种小变形高基频拓扑结构超高速摄影仪用转镜。
 背景技术
转镜是转镜式超高速摄影仪中的核心部件，转镜的结构和力学性能直接决定了超高速摄影仪的时间分辨率、空间分辨率、成像质量和运转可靠性。在分幅式超高速摄影仪系统中，系统的中间像成像在转镜附近，转镜同时起到场镜和高速扫描反射镜的双重作用。在扫描式超高速摄影仪中，转镜同时起到投影镜和高速扫描反射镜的双重作用。在空间分辨率方面，转镜的镜面结构尺寸越大，承载的信息量越大，但其内部应力也越大，镜面变形量也越大，因而转镜系统乃至成像系统受到破坏的可能性就大。在时间分辨率方面，超高速摄影仪系统的时间分辨率与转镜的转速成正比，转速越高，超高速摄影仪系统的时间分辨率就越高。但同时受到转镜本身结构的限制，转镜的一阶临界极限转速与转镜的材料和结构相关，一般在20~40 万转/分钟之间，转镜的时间分辨率受限，如果减小转镜的结构尺寸，也可以实现提高转镜的一阶临界极限转速和时间分辨率的目的。但是，转镜外形结构尺寸减小势必减小超高速摄影仪的画幅尺寸，降低其空间分辨率。转镜的横向变形会使图像产生畸变，直接影响到超高速摄影仪的成像质量。
 技术问题
为了解决所述现有技术的不足，本发明提供了一种小变形高基频拓扑结构超高速摄影仪用转镜，在不改变转镜原有的镜面尺寸的基础上，镜面最大横向变形量由原来的1.191×10 -6 mm减少到0.654×10 -6mm，三角形端面最大横向变形量为原结构的54.9%，减小了45.1%，可以有效提高超高速摄影仪的成像质量。转镜的基频为8876.3 Hz，比原结构的8344.2 Hz增加了532.1 Hz，转镜的一阶临界极限转速提高了31926 转/分钟，比原来提高了6%，可以在一定程度上提高超高速摄影仪的时间分辨率。
技术解决方案
本发明所要达到的技术效果通过以下方案实现：一种小变形高基频拓扑结构超高速摄影仪用转镜，所述转镜为等三棱柱体型结构，包括三个大小相同的矩形镜面和两个大小相同的等边三角形端面，三个所述矩形镜面的长边两两围合设置，围合的长边形成转镜的棱边，三个所述矩形镜面的宽边围合形成两个等边三角形端面，所述转镜还包括三个相同的分别关于等边三角形端面的三条角平分线对称的拓扑结构，单个所述拓扑结构包括依次沿角平分线对称设置的第一通孔组合体、第二通孔组合体和第三通孔组合体，所述第一通孔组合体、第二通孔组合体和第三通孔组合体中的通孔大小形状相同且各自的通孔之间具有相同间距。
优选地，所述第一通孔组合体形成在角平分线的最外侧，包括8个通孔，其距离顶点由近及远依次按第一排1个通孔，第二排2个通孔，第三排3个通孔和第四排2个通孔的数量等间距排列。
优选地，所述第二通孔组合体形成在第一通孔组合体远离等边三角形端面的顶点的一侧，包括19个通孔，其距离第一通孔组合体由近及远依次按第一排3个通孔，第二排4个通孔，第三排5个通孔，第四排4个通孔，第五排3个通孔的数量等间距排列。
优选地，所述第三通孔组合体形成在第二通孔组合体远离第一通孔组合体的一侧，其包括分别形成在角平分线两侧且呈线性排列的3个通孔，单侧的该3个通孔的中心点形成的线与角平分线呈30°角设置。
优选地，所述拓扑结构中的通孔截面为外接圆半径是0.4mm的等六边形，等六边形的相邻两边之间还具有圆角半径为0.02mm的过渡边。
优选地，所述拓扑结构中的相邻两个通孔之间最近距离的棱边平行设置，该平行的棱边之间的间距为0.11mm。
优选地，相邻两个所述通孔之间的中心距为0.69mm。
优选地，所述转镜的体积为3424.5mm 3，所述等边三角形端面的外接圆半径为13.83mm。
优选地，所述转镜开设有中心孔，所述中心孔穿设两个等边三角形端面设置且中心孔的中心点与等边三角形端面的中心点重合设置。
优选地，所述中心孔的孔径为6mm。
 有益效果
本发明具有以下优点：
1、通过将拓扑结构的三个通孔组合体中的通孔大小形状相同且各自的通孔之间具有相同间距，可以使转镜棱边到中心线的刚度和镜面到中心线的刚度趋于平衡，从而使镜面变形减小，同时提高了转镜的基频；另外通孔大小形状相同使得转镜的加工工艺更加简单；
2、通过将第一通孔组合体、第二通孔组合体和第三通孔组合体中各自通孔的数量和组合形状的特定设置可以降低组合体这部分材料的密封和组合体这部分结构的刚度；
3、所述通孔为外接圆半径是0.4mm的等六边形，等六边形的相邻两边之间还具有圆角半径为0.02mm的过渡边，可以使镜面到转镜中心的刚度和棱边到中心的刚度达到一个相对平衡，使镜面的相对横向变形量减少；
4、相邻两个通孔之间最近距离的棱边平行设置，该平行的棱边之间的间距为0.11mm，以提高转镜棱边到转镜中心部分结构的刚度，从而提高了转镜的基频，达到降低镜面变形量和提高基频的双重目的。
 附图说明
图1为本发明一种小变形高基频拓扑结构超高速摄影仪用转镜的立体结构示意图；
图2为本发明一种小变形高基频拓扑结构超高速摄影仪用转镜中等边三角形端面的结构示意图；
图3为本发明一种小变形高基频拓扑结构超高速摄影仪用转镜中拓扑结构的放大结构示意图；
图4为本发明一种小变形高基频拓扑结构超高速摄影仪用转镜的镜面横向变形量的曲线；
图5为现有技术中超高速摄影仪用转镜的镜面横向变形量曲线。
 本发明的实施方式
下面结合附图和实施例对本发明进行详细的说明，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括一个或者多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”、“设置”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，还可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
结合图1-图4所示，本发明实施例提供一种小变形高基频拓扑结构超高速摄影仪用转镜，所述转镜为等三棱柱体型结构，其包括三个大小相同的矩形镜面100和两个大小相同的等边三角形端面200。具体地，三个所述矩形镜面100的长边两两围合设置，围合后的长边形成转镜的棱边，三个所述矩形镜面100的宽边围合形成两个等边三角形端面200，所述矩形镜面100和等边三角形端面200围合形成的空间为转镜的主体结构，所述转镜可以采用铝合金制成，但不限于此。所述转镜开设有中心孔300，所述中心孔300穿设两个等边三角形端面200设置且中心孔300的中心点与等边三角形端面200的中心点重合设置，所述中心孔300内可以设有转轴（图中未显示），所述转镜通过转轴安装在超高速摄影仪的暗箱中，并由转轴带动其旋转。具体地，所述等边三角形端面200的外接圆半径为13.83mm，所述中心孔300的孔径为6mm。
所述转镜还包括三个相同的分别关于等边三角形端面200的三条角平分线A对称的拓扑结构400，单个所述拓扑结构400包括依次沿角平分线A对称设置的第一通孔组合体410、第二通孔组合体420和第三通孔组合体430，所述第一通孔组合体410、第二通孔组合体420和第三通孔组合体430中的通孔大小形状相同且各自的通孔之间具有相同间距，上述拓扑结构400的设置，可以使转镜棱边到中心线的刚度和镜面到中心线的刚度趋于平衡，从而使镜面变形减小，同时提高了转镜的基频。另外通孔大小形状相同使得转镜的加工工艺更加简单。
具体地，所述第一通孔组合体410形成在角平分线A的最外侧，靠近等边三角形端面200的顶点位置，所述第一通孔组合体410包括8个通孔，其距离顶点由近及远依次按第一排1个通孔，第二排2个通孔，第三排3个通孔和第四排2个通孔的数量等间距排列。所述第二通孔组合体420形成在第一通孔组合体410远离等边三角形端面200的顶点的一侧，所述第二通孔组合体420包括19个通孔，其距离第一通孔组合体410由近及远依次按第一排3个通孔，第二排4个通孔，第三排5个通孔，第四排4个通孔，第五排3个通孔的数量等间距排列。所述第三通孔组合体430形成在第二通孔组合体420远离第一通孔组合体410的一侧，其包括分别形成在角平分线A两侧且呈线性排列的3个通孔，单侧的该3个通孔的中心点形成的线与角平分线A呈30°角设置。上述第一通孔组合体410、第二通孔组合体420和第三通孔组合体430中各自通孔的数量和组合形状的设置可以降低组合体这部分材料的密封和组合体这部分结构的刚度。
作为本发明实施例的进一步改进，所述拓扑结构400中的通孔截面为外接圆半径是0.4mm的等六边形，等六边形的相邻两边之间还具有圆角半径为0.02mm的过渡边，可以使镜面到转镜中心的刚度和棱边到中心的刚度达到一个相对平衡，使镜面的相对横向变形量减少。
作为本发明实施例的进一步改进，所述拓扑结构400中的相邻两个通孔之间最近距离的棱边平行设置，该平行的棱边之间的间距为0.11mm，以提高转镜棱边到转镜中心部分结构的刚度，从而提高了转镜的基频，达到降低镜面变形量和提高基频的双重目的。更优地，相邻两个所述通孔之间的中心距为0.69mm。
本发明实施例中，所述转镜的体积为3424.5mm 3，而现有技术中的转镜体积为4576.61mm 3，所述转镜的结构质量减少至现有的75%，有效的提高了转镜的基频。
本发明实施例中，所述拓扑结构400中的通孔轴线之间的夹角分别为60°和120°，这两个角度的设置和转镜的棱角以及转镜轴线之间的夹角对应一致。
结合图4-图5所示，本发明实施例的转镜，在不改变转镜原有的镜面尺寸的基础上，镜面最大横向变形量由原来的1.191×10 -6mm减少到0.654×10 -6mm，三角形端面最大横向变形量为原结构的54.9%，减小了45.1%，可以有效提高超高速摄影仪的成像质量。本发明实施例转镜的基频为8876.3 Hz，比原结构的8344.2 Hz增加了532.1 Hz，转镜的一阶临界极限转速提高了31926 转/分钟，比原来提高了6%，可以在一定程度上提高超高速摄影仪的时间分辨率。
最后需要说明的是，以上实施例仅用以说明本发明实施例的技术方案而非对其进行限制，尽管参照较佳实施例对本发明实施例进行了详细的说明，本领域的普通技术人员应当理解依然可以对本发明实施例的技术方案进行修改或者等同替换，而这些修改或者等同替换亦不能使修改后的技术方案脱离本发明实施例技术方案的范围。

Claims (10)

  1. 一种小变形高基频拓扑结构超高速摄影仪用转镜，所述转镜为等三棱柱体型结构，包括三个大小相同的矩形镜面和两个大小相同的等边三角形端面，三个所述矩形镜面的长边两两围合设置，围合的长边形成转镜的棱边，三个所述矩形镜面的宽边围合形成两个等边三角形端面，其特征在于，所述转镜还包括三个相同的分别关于等边三角形端面的三条角平分线对称的拓扑结构，单个所述拓扑结构包括依次沿角平分线对称设置的第一通孔组合体、第二通孔组合体和第三通孔组合体，所述第一通孔组合体、第二通孔组合体和第三通孔组合体中的通孔大小形状相同且各自的通孔之间具有相同间距。
  2. 如权利要求1所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述第一通孔组合体形成在角平分线的最外侧，包括8个通孔，其距离顶点由近及远依次按第一排1个通孔，第二排2个通孔，第三排3个通孔和第四排2个通孔的数量等间距排列。
  3. 如权利要求2所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述第二通孔组合体形成在第一通孔组合体远离等边三角形端面的顶点的一侧，包括19个通孔，其距离第一通孔组合体由近及远依次按第一排3个通孔，第二排4个通孔，第三排5个通孔，第四排4个通孔，第五排3个通孔的数量等间距排列。
  4. 如权利要求3所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述第三通孔组合体形成在第二通孔组合体远离第一通孔组合体的一侧，其包括分别形成在角平分线两侧且呈线性排列的3个通孔，单侧的该3个通孔的中心点形成的线与角平分线呈30°角设置。
  5. 如权利要求1-4任一项所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述拓扑结构中的通孔截面为外接圆半径是0.4mm的等六边形，等六边形的相邻两边之间还具有圆角半径为0.02mm的过渡边。
  6. 如权利要求1-4任一项所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述拓扑结构中的相邻两个通孔之间最近距离的棱边平行设置，该平行的棱边之间的间距为0.11mm。
  7. 如权利要求1-4任一项所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，相邻两个所述通孔之间的中心距为0.69mm。
  8. 如权利要求1所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述转镜的体积为3424.5mm 3，所述等边三角形端面的外接圆半径为13.83mm。
  9. 如权利要求1所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述转镜开设有中心孔，所述中心孔穿设两个等边三角形端面设置且中心孔的中心点与等边三角形端面的中心点重合设置。
  10. 如权利要求9所述的一种小变形高基频拓扑结构超高速摄影仪用转镜，其特征在于，所述中心孔的孔径为6mm。
PCT/CN2021/115254 2020-10-14 2021-08-30 一种小变形高基频拓扑结构超高速摄影仪用转镜 WO2022078086A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011097196.2 2020-10-14
CN202011097196.2A CN112051667A (zh) 2020-10-14 2020-10-14 一种小变形高基频拓扑结构超高速摄影仪用转镜

Publications (1)

Publication Number Publication Date
WO2022078086A1 true WO2022078086A1 (zh) 2022-04-21

Family

ID=73606330

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/115254 WO2022078086A1 (zh) 2020-10-14 2021-08-30 一种小变形高基频拓扑结构超高速摄影仪用转镜

Country Status (3)

Country Link
CN (1) CN112051667A (zh)
DE (1) DE202021105262U1 (zh)
WO (1) WO2022078086A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112051667A (zh) * 2020-10-14 2020-12-08 深圳技术大学 一种小变形高基频拓扑结构超高速摄影仪用转镜

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1107976A (zh) * 1994-03-04 1995-09-06 松下电器产业株式会社 旋转多面镜
CN1971400A (zh) * 2006-10-24 2007-05-30 深圳大学 小变形的超高速摄影仪转镜
CN200950180Y (zh) * 2006-01-18 2007-09-19 河北工业大学 激光扫描器用曲面转镜装置
DE202013010638U1 (de) * 2013-11-25 2014-05-08 Alphaform Ag Leichtbau-Umlenkspiegel
EP2860546A1 (de) * 2013-10-09 2015-04-15 Hexagon Technology Center GmbH Vermessungsgerät mit einem Rotationsspiegel zum optischen Abtasten einer Umgebung
CN105319707A (zh) * 2014-05-28 2016-02-10 兄弟工业株式会社 光偏转器和成像设备
CN108615521A (zh) * 2018-04-12 2018-10-02 湖南大学 一种声拓扑绝缘体
CN110967680A (zh) * 2019-12-18 2020-04-07 中国科学院半导体研究所 用于三维扫描的复合结构转镜及应用其的激光雷达
US20200132248A1 (en) * 2018-10-25 2020-04-30 The Boeing Company Pivot flexure with uniform moment stiffness
CN112051667A (zh) * 2020-10-14 2020-12-08 深圳技术大学 一种小变形高基频拓扑结构超高速摄影仪用转镜
CN212433509U (zh) * 2020-10-14 2021-01-29 深圳技术大学 一种小变形高基频拓扑结构超高速摄影仪用转镜

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1107976A (zh) * 1994-03-04 1995-09-06 松下电器产业株式会社 旋转多面镜
CN200950180Y (zh) * 2006-01-18 2007-09-19 河北工业大学 激光扫描器用曲面转镜装置
CN1971400A (zh) * 2006-10-24 2007-05-30 深圳大学 小变形的超高速摄影仪转镜
EP2860546A1 (de) * 2013-10-09 2015-04-15 Hexagon Technology Center GmbH Vermessungsgerät mit einem Rotationsspiegel zum optischen Abtasten einer Umgebung
DE202013010638U1 (de) * 2013-11-25 2014-05-08 Alphaform Ag Leichtbau-Umlenkspiegel
CN105319707A (zh) * 2014-05-28 2016-02-10 兄弟工业株式会社 光偏转器和成像设备
CN108615521A (zh) * 2018-04-12 2018-10-02 湖南大学 一种声拓扑绝缘体
US20200132248A1 (en) * 2018-10-25 2020-04-30 The Boeing Company Pivot flexure with uniform moment stiffness
CN110967680A (zh) * 2019-12-18 2020-04-07 中国科学院半导体研究所 用于三维扫描的复合结构转镜及应用其的激光雷达
CN112051667A (zh) * 2020-10-14 2020-12-08 深圳技术大学 一种小变形高基频拓扑结构超高速摄影仪用转镜
CN212433509U (zh) * 2020-10-14 2021-01-29 深圳技术大学 一种小变形高基频拓扑结构超高速摄影仪用转镜

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CONG HAI FANG: "Scanning Mirror Topology Optimization of the Imaging Spectrometer", APPLIED MECHANICS AND MATERIALS, vol. 599-601, pages 1205 - 1210, XP055921645, DOI: 10.4028/www.scientific.net/AMM.599-601.1205 *
LI CHUNBO, CHUN-HUI YU, LI JING-ZHEN, CHAI JIN-LONG, LIU CHUN-PING, ZHONG-SHUI LING, HUANG HONG-BIN: "Structure design of rotating mirror based on the topology optimization theory for ultra-high speed camera", SHENZHEN DAXUE XUEBAO - JOURNAL OF SHENZHEN UNIVERSITY, GAI KAN BIANJIBU, SHENZHEN, CN, vol. 29, no. 4, 31 July 2012 (2012-07-31), CN , pages 304 - 310, XP055921642, ISSN: 1000-2618, DOI: 10.3724/SP.J.1249.2012.04304 *
XIE JI-YOU, WANG XING-SHU, HU CHUN-SHENG: "Analysis on Dynamic Balance of Multi-Rotating Mirror Used in Imaging Radar Based on SolidWorks", MACHINERY DESIGN & MANUFACTURE, no. 6, 30 June 2012 (2012-06-30), pages 181 - 183, XP055921643, ISSN: 1001-3997, DOI: 10.19356/j.cnki.1001-3997.2012.06.068 *

Also Published As

Publication number Publication date
DE202021105262U1 (de) 2021-10-12
CN112051667A (zh) 2020-12-08

Similar Documents

Publication Publication Date Title
WO2022078086A1 (zh) 一种小变形高基频拓扑结构超高速摄影仪用转镜
JPH05119283A (ja) 投写型表示装置用光学系
JPS63232247A (ja) シヤドウマスク形カラ−受像管
WO2023015682A1 (zh) 一种防抖的潜望式模组
CN212433509U (zh) 一种小变形高基频拓扑结构超高速摄影仪用转镜
CN109064908A (zh) 阵列基板和显示面板
WO2020108104A1 (zh) 一种镜头模组
CN215729093U (zh) 一种可多级倍数增加像素点的振镜
JP2022538039A (ja) 額縁接続構造及びディスプレイ
WO2022120957A1 (zh) 一种摄像镜头
JPH05227503A (ja) 液冷式プロジェクタ
CN100483245C (zh) 小变形的超高速摄影仪转镜
CN210191031U (zh) 垫片、行驶系统及起重机
CN220651556U (zh) 用于球幕显示系统的cob箱体结构
JPS6011811A (ja) 対称型レンズ
CN220526093U (zh) 鱼眼镜头外部光学成像优化结构及具有其的全景相机
CN112946914B (zh) 一种带张角透射式几何全息屏及其应用
CN220207965U (zh) 镜框与镜头
JPS6077662A (ja) 揺動型アクチユエ−タ
CN215730733U (zh) 一种岛礁权益管理制度展示牌
WO2024002288A1 (zh) 马达、摄像头模组和电子设备
JP3464310B2 (ja) 磁気ディスク装置のアジマス調整装置
CN1387289A (zh) 超稳定光学谐振腔的调节机构
JPS60244190A (ja) 角形平面スピ−カ
JPH0119123Y2 (zh)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21879132

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21879132

Country of ref document: EP

Kind code of ref document: A1