Movement mechanism for realizing large-view-field high-spectral-resolution detection optical path difference generation method

Abstract

The invention discloses a movement mechanism for realizing a large-view-field high-spectral-resolution detection optical path difference generation method. The movement mechanism comprises a first optical mirror, a second optical mirror, a first mirror spring, a second mirror spring and an inner fixing plate. The inner fixing plate, the first mirror spring and the second mirror spring form a spring connecting rod, and the spring connecting rod, the first mirror base and the second mirror base form a door-shaped frame. By taking the fixed end of the fixed plate as a fulcrum, the mechanism can do planar motion, reciprocating driving force is applied to the mirror seat of the second mirror, the first mirror spring and the second mirror spring generate elastic bending deformation to drive the first optical mirror and the second optical mirror to do planar motion in opposite directions according to a set speed ratio, and the optical mirror surfaces have no angle inclination during motion. An optical path generated by movement of the second optical mirror and a central light beam are larger than oblique light beams; the first optical mirror and the second optical mirror move relatively, the path of the light beam in the optical element changes, the optical path and the center light beam generated in the process are smaller than the oblique light beam, the optical lens structure and the movement speed ratio are designed to enable the optical paths of all the light beams to be consistent, and the large-view-field high-spectral resolution is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of infrared remote sensing detection technology, and in particular to a motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution. Background Art

[0002] Satellite remote sensing technology is now widely used in weather forecasting and atmospheric chemical composition monitoring. Internationally, infrared hyperspectral detection technology is often used to detect infrared bands of the Earth's atmosphere. The use of infrared Fourier transform interferometric atmospheric vertical detectors to detect atmospheric temperature, humidity, and composition requires high spectral resolution and a large detection field of view. The spectral resolution is determined by the value of the optical path difference, which is generated by the motion mechanism. If the optical field of view of the spectrometer detector in its interferometer is too large, the resulting spectral broadening will exceed the spectral resolution requirement. In this case, even if the optical path difference is increased, the spectral resolution cannot be improved.

[0003] Therefore, how to use motion mechanisms to make the optical paths of all light beams consistent and achieve a large field of view and high spectral resolution becomes a technical problem that needs to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a motion mechanism for realizing a method for generating optical path difference for detection with large field of view and high spectral resolution, mainly to solve the problem in the above-mentioned prior art of how to use the motion mechanism to make the optical path of all light beams consistent and realize large field of view and high spectral resolution.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution, characterized in that: the motion mechanism comprises an optical first mirror, an optical second mirror, a first mirror seat, a second mirror seat, a first mirror spring and a second mirror spring of the first group, a first mirror spring and a second mirror spring of the second group, wherein a first inner fixed plate and a first outer fixed plate are respectively provided with inner recesses at corresponding positions, and the two inner recesses jointly form a first groove, a fixed end of a first mirror spring of the first group is connected to a first mirror seat, a first mirror spring of the first group is clamped by the first inner fixed plate and the first outer fixed plate, a movable end of a first mirror spring of the first group is connected to the first fixed plate located in the first groove, a fixed end of the second mirror spring of the first group is connected to the second mirror seat, a movable end of the second mirror spring of the first group is clamped by the first inner fixed plate and the first outer fixed plate, and a first spring connecting rod is formed by the first inner fixed plate, the first inner fixed plate and the first group of two mirror springs;

[0006] The second inner fixing plate and the second outer fixing plate are respectively provided with inner recesses at corresponding positions, and the two inner recesses together form a second groove, a fixed end of a mirror spring of the second group is connected to a mirror seat, a mirror spring of the second group is clamped by the second inner fixing plate and the second outer fixing plate, a movable end of a mirror spring of the second group is connected to the second fixing plate located in the second groove, a fixed end of two mirror springs of the second group is connected to the mirror seat of the second mirror, a movable end of two mirror springs of the second group is clamped by the second inner fixing plate and the second outer fixing plate, and a mirror spring of the second group, the second inner fixing plate and the two mirror springs of the second group form a second spring connecting rod;

[0007] The first groove and the second groove are located in corresponding positions;

[0008] When the two-mirror base moves with the optical two mirrors in the plane, the first spring link uses the first fixed plate as a fulcrum, the second spring link uses the second fixed plate as a fulcrum, the first spring link and the second spring link rotate in the same plane and drive the one-mirror base and the optical one mirror to make a planar motion in the opposite direction of the optical two mirrors.

[0009] Furthermore, the motion mechanism also includes a first clamping plate, a second clamping plate, a third clamping plate and a fourth clamping plate, a fixed end of a mirror spring of the first group is fixed between the first clamping plate and a mirror seat by a screw, a fixed end of a second mirror spring of the first group is fixed between the second clamping plate and the second mirror seat by a screw, a fixed end of a mirror spring of the second group is fixed between the third clamping plate and a mirror seat by a screw, and a fixed end of a second mirror spring of the second group is fixed between the fourth clamping plate and the second mirror seat by a screw.

[0010] Furthermore, one end of the mirror seat corresponding to the first splint is the first end, and the lower surface of the first end is flush with the lower edge of the first splint; one end of the mirror seat corresponding to the second splint is the second end, and the upper surface of the second end is flush with the upper edge of the second splint; one end of the mirror seat corresponding to the third splint is the third end, and the lower surface of the third end is flush with the lower edge of the third splint; one end of the mirror seat corresponding to the fourth splint is the fourth end, and the upper surface of the fourth end is flush with the upper edge of the fourth splint.

[0011] Further, a first distance is set between the lower surface of the first mirror base and the upper surface of the first inner fixing plate, a second distance is set between the lower surface of the first mirror base and the upper surface of the second inner fixing plate, and the first distance and the second distance are equal; a third distance is set between the upper surface of the second mirror base and the lower surface of the first inner fixing plate, a fourth distance is set between the upper surface of the second mirror base and the lower surface of the second inner fixing plate, and the third distance and the fourth distance are equal;

[0012] The outer frame sizes of the first inner fixing plate, the first outer fixing plate, the second inner fixing plate and the second outer fixing plate are all the same;

[0013] The distance between the upper edge of the first fixing plate and the upper surface of the first groove is equal to the distance between the upper edge of the second fixing plate and the upper surface of the second groove.

[0014] Furthermore, the first mirror base and the second mirror base are two square plates or circular frames of the same size;

[0015] Furthermore, both the first optical mirror and the second optical mirror are wedge mirrors, and the first inclined surface of the first optical mirror and the second inclined surface of the second optical mirror are opposite to each other;

[0016] The first mirror spring and the second mirror spring of the first group and the first mirror spring and the second mirror spring of the second group all use spring sheets, and the spring sheets are made of beryllium bronze material;

[0017] The first mirror base, the second mirror base, the first clamping plate, the second clamping plate, the third clamping plate, the fourth clamping plate, the first inner fixing plate, the first outer fixing plate, the second inner fixing plate and the second outer fixing plate are all made of metal aluminum material.

[0018] Further, a line connecting the centers of the two mirror springs of the first group and the centers of the two mirror springs of the second group forms a second straight line, a line connecting the center of one mirror spring of the first group and the center of one mirror spring of the second group forms a first straight line, the first straight line and the second straight line are parallel, and the two form a reference plane;

[0019] The plane movement of the two-mirror mount with the two optical mirrors refers to the movement of the two optical mirrors in a plane parallel to the reference plane; the plane movement of the one-mirror mount with the one optical mirror refers to the movement of the one optical mirror in a plane parallel to the reference plane.

[0020] Furthermore, the first optical mirror is rotated 180° clockwise to be placed in the same direction as the second optical mirror;

[0021] The first inclined surface of the optical mirror 1 is parallel to the reference plane, and the second inclined surface of the optical mirror 2 is parallel to the reference plane.

[0022] Furthermore, the optical mirror one is connected to the mirror base through a first Z-shaped plate, the optical mirror two is connected to the mirror base through a second Z-shaped plate, and the center of gravity of the motion mechanism is balanced to above the geometric center of the mirror base.

[0023] In view of the above technical features, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a motion mechanism for realizing a method for generating an optical path difference for detection with high spectral resolution over a large field of view. The motion mechanism compensates the optical path through wedge mirrors (i.e., optical mirror 1 and optical mirror 2), breaks through the limit of the field of view on the spectral resolution, and makes the spectral resolution of the edge field of view consistent with that of the center field of view. The motion mechanism can be applied to situations requiring a large field of view.

[0025] 2. The present invention provides a motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution. During the movement of the first optical mirror and the second optical mirror, the optical mirror surface has good translational characteristics, a small interference wavefront difference, and small light jitter during operation, thereby ensuring the interference performance of the interferometer.

[0026] 3. The present invention provides a motion mechanism for realizing a method for generating an optical path difference for detecting a large field of view and a high spectral resolution. The first optical mirror and the second optical mirror have both an optical path difference compensation function and an optical path difference generation function during the motion process.

[0027] 4. The present invention provides a motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution. The motion mechanism uses springs (i.e., one mirror spring and two mirror springs) to realize reciprocating motion. It does not require bearings and can avoid all problems caused by lubrication.

[0028] 5. In the present invention, a motion mechanism is used to realize a method for generating an optical path difference for large-field-of-view and high-spectral-resolution detection. The forward and reverse motion characteristics of the first optical mirror and the second optical mirror are consistent. Therefore, both forward and reverse motions can be used to generate interference patterns to increase detection efficiency.

[0029] 6. The motion mechanism of the present invention for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution can break through the limit of the field of view on the spectral resolution and meet the application occasions where both a large field of view and high spectral resolution are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a stereoscopic diagram of a motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution in specific embodiment 1.

[0031] In the figure: 1, optical first mirror; 12, first Z-shaped plate;

[0032] 2. Optical second mirror; 22. Second Z-shaped plate;

[0033] 3. A mirror base;

[0034] 41, first splint; 42, second splint; 43, third splint; 44, fourth splint;

[0035] 5. Two-mirror mirror base;

[0036] 60. first groove;

[0037] 61. First internal fixation plate;

[0038] 62. Second internal fixation plate;

[0039] 70. second groove; 71. first outer fixing plate; 72. second outer fixing plate;

[0040] 81. a mirror spring of the first group; 82. a mirror spring of the second group;

[0041] 91, the second mirror spring of the first group;

[0042] 92, second mirror spring of the second group;

[0043] 101. A first fixing plate; 102. A second fixing plate. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0045] See also Figure 1 , Specific embodiment 1, this embodiment 1 provides a motion mechanism for realizing a method for generating a large field of view and high spectral resolution detection optical path difference, comprising an optical first mirror 1, an optical second mirror 2, a first mirror seat 3, a second mirror seat 5, a first mirror spring 81 and a second mirror spring 91 of a first group, a first mirror spring 82 and a second mirror spring 92 of a second group, wherein a first inner fixing plate 61 and a first outer fixing plate 71 are respectively provided with inner recesses at corresponding positions, and the two inner recesses jointly form a first groove 60, a fixed end of the first mirror spring 81 of the first group is connected to the first mirror seat 3, the first mirror spring 81 of the first group is clamped by the first inner fixing plate 61 and the first outer fixing plate 71, a movable end of the first mirror spring 81 of the first group is connected to the first fixing plate 101 located in the first groove 60, a fixed end of the second mirror spring 91 of the first group is connected to the second mirror seat 5, a movable end of the second mirror spring 91 of the first group is clamped by the first inner fixing plate 61 and the first outer fixing plate 71, and the first mirror spring 81 of the first group, the first inner fixing plate 61 and the first mirror spring 91 of the first group form a first spring connecting rod.

[0046] The second inner fixing plate 62 and the second outer fixing plate 72 are respectively provided with inner recesses at corresponding positions, and the two inner recesses together form a second groove 70. The fixed end of a mirror spring 82 of the second group is connected to a mirror seat 3, and the mirror spring 82 of the second group is clamped by the second inner fixing plate 62 and the second outer fixing plate 72. The movable end of the mirror spring 82 of the second group is connected to the second fixing plate 102 located in the second groove 70. The fixed end of the second mirror spring 92 of the second group is connected to the mirror seat 5, and the movable ends of the second mirror spring 92 of the second group are clamped by the second inner fixing plate 62 and the second outer fixing plate 72. The mirror spring 82 of the second group, the second inner fixing plate 62 and the second mirror spring 92 of the second group form a second spring connecting rod.

[0047] The first groove 60 and the second groove 70 correspond in position, that is, the first groove 60 and the second groove 70 have the same shape and size, and the distance from the first groove 60 to the upper and lower ends of the first inner fixing plate 61 is equal to the distance from the second groove 70 to the upper and lower ends of the second inner fixing plate 62, ensuring that the first mirror seat 3 and the second mirror seat 5 can achieve reverse planar motion.

[0048] When the two-mirror base 5 moves with the optical second mirror 2 in a plane, the first spring link takes the first fixed plate 101 as a fulcrum, and the second spring link takes the second fixed plate 102 as a fulcrum. The first spring link and the second spring link rotate in the same plane and drive the one-mirror base 3 and the optical first mirror 1 to make a planar motion in the opposite direction to the optical second mirror 2.

[0049] The motion mechanism also includes a first clamping plate 41, a second clamping plate 42, a third clamping plate 43 and a fourth clamping plate 44. The fixed end of a mirror spring 81 of the first group is fixed between the first clamping plate 41 and a mirror seat 3 by means of screws, the fixed end of a second mirror spring 91 of the first group is fixed between the second clamping plate 42 and a mirror seat 5 by means of screws, the fixed end of a mirror spring 82 of the second group is fixed between the third clamping plate 43 and a mirror seat 3 by means of screws, and the fixed end of a second mirror spring 92 of the second group is fixed between the fourth clamping plate 44 and a mirror seat 5 by means of screws.

[0050] One end of the first mirror seat 3 corresponding to the first clamping plate 41 is the first end, and the lower surface of the first end is flush with the lower edge of the first clamping plate 41; one end of the second mirror seat 5 corresponding to the second clamping plate 42 is the second end, and the upper surface of the second end is flush with the upper edge of the second clamping plate 42; one end of the first mirror seat 3 corresponding to the third clamping plate 43 is the third end, and the lower surface of the third end is flush with the lower edge of the third clamping plate 43; one end of the second mirror seat 5 corresponding to the fourth clamping plate 44 is the fourth end, and the upper surface of the fourth end is flush with the upper edge of the fourth clamping plate 44.

[0051] A first distance is set between the lower surface of the first mirror seat 3 and the upper surface of the first inner fixing plate 61, a second distance is set between the lower surface of the first mirror seat 3 and the upper surface of the second inner fixing plate 62, and the first distance and the second distance are equal; a third distance is set between the upper surface of the second mirror seat 5 and the lower surface of the first inner fixing plate 61, a fourth distance is set between the upper surface of the second mirror seat 5 and the lower surface of the second inner fixing plate 62, and the third distance and the fourth distance are equal; the outer frame sizes of the first inner fixing plate 61, the first outer fixing plate 71, the second inner fixing plate 62 and the second outer fixing plate 72 are all the same; the distance between the upper edge of the first fixing plate 101 and the upper surface of the first groove 60 is equal to the distance between the upper edge of the second fixing plate 102 and the upper surface of the second groove 70.

[0052] The first mirror base 3 and the second mirror base 5 are two square plates or circular frames of the same size.

[0053] For example, the first inner fixing plate 61 and the first outer fixing plate 71 are two circular frames of the same size. The first fixing plate 101 and the second fixing plate 102 are used to fix the connection to other devices, that is, to fix the motion mechanism, as a fulcrum, to provide support for the first mirror base 3 and the second mirror base 5 to achieve reverse planar motion.

[0054] The first mirror spring 81 and the second mirror spring 91 of the first group, and the first mirror spring 82 and the second mirror spring 92 of the second group are all made of spring sheets, and the spring sheets are made of beryllium bronze material;

[0055] The first mirror base 3, the second mirror base 5, the first clamping plate 41, the second clamping plate 42, the third clamping plate 43, the fourth clamping plate 44, the first inner fixing plate 61, the first outer fixing plate 71, the second inner fixing plate 62 and the second outer fixing plate 72 are all made of metal aluminum material.

[0056] A line connecting the centers of the two mirror springs 91 of the first group and the centers of the two mirror springs 92 of the second group forms a second straight line, and a line connecting the centers of the one mirror spring 81 of the first group and the centers of the one mirror spring 82 of the second group forms a first straight line. The first straight line and the second straight line are parallel and form a reference plane.

[0057] The plane motion of the two-mirror mount 5 carrying the optical two mirrors 2 refers to the motion of the optical two mirrors 2 in a plane parallel to the reference plane; the plane motion of the one-mirror mount 3 carrying the optical one mirror 1 refers to the motion of the optical one mirror 1 in a plane parallel to the reference plane.

[0058] Both the optical mirror 1 and the optical mirror 2 are wedge mirrors, and the first inclined surface of the optical mirror 1 is opposite to the second inclined surface of the optical mirror 2; for example, after the optical mirror 1 is rotated 180° clockwise, it is placed in the same direction as the optical mirror 2, so that the thickness of the optical element can be controlled to increase or decrease by moving the optical mirror 1 and the optical mirror 2 in the opposite direction, thereby indirectly controlling the increase or decrease of the optical path.

[0059] The first inclined surface of the optical mirror 1 is parallel to the reference plane, and the second inclined surface of the optical mirror 2 is parallel to the reference plane.

[0060] The optical first mirror 1 is connected to the first mirror base 3 through the first Z-shaped plate 12, and the optical second mirror 2 is connected to the second mirror base 5 through the second Z-shaped plate 22. The center of gravity of the motion mechanism is balanced to above the geometric center of the second mirror base 5.

[0061] For example, a motion mechanism for realizing a method for generating a large field of view high spectral resolution detection optical path difference in this embodiment 1 is used for generating an optical path difference of a large field of view high spectral resolution detector. The main parameters are: the optical second mirror 22 is a main driving structure, the optical first mirror 1 is a driven structure, the speed ratio of the optical first mirror 1 to the optical second mirror 22 is 1:1.4; the outer frame size of the inner fixing plate 6 and the outer fixing plate 7 is 127mm×142mm; the aperture of the entire motion mechanism is 60mm.

[0062] The incident direction of the light is perpendicular to the reflection surface of the optical second mirror 2, and is reflected by the reflection surface. The reciprocating force is applied to the second mirror base 5. The second mirror base 5 performs planar motion under the action of the reciprocating driving force. The direction of the driving force is the direction of the line connecting the center of the second mirror spring 91 of the first group and the center of the second mirror spring 92 of the second group. The second mirror base 5 drives the optical second mirror 2 to perform planar motion, causing the second mirror spring 91 of the first group and the second mirror spring 92 of the second group to produce elastic bending deformation. Through the connection between the first inner fixing plate 61 and the first outer fixing plate 71, the first mirror spring 81 of the first group also produces elastic bending deformation. Through the connection between the second inner fixing plate 62 and the second outer fixing plate 72, the second mirror spring 82 of the second group also produces elastic bending deformation, driving the optical first mirror 1 to perform planar motion in the opposite direction to the optical second mirror 2, that is, the optical first mirror 1 and the optical second mirror 2 perform reciprocating motion in opposite directions according to the set speed ratio. At this time, the structural dimensions of the first inner fixing plate 61, the first outer fixing plate 71, the second inner fixing plate 62 and the first outer fixing plate 71, the position of the first fixing plate 101 in the first groove 60 and the position of the second fixing plate 102 in the second groove 70 jointly determine the movement speed ratio of the optical mirror 1 and the optical mirror 2.

[0063] When the optical mirror 2 performs a planar motion, its reflection surface is displaced along the direction of the central light beam (i.e., when the optical mirror 1 and the optical mirror 2 are close to each other at the same time), an optical path difference is generated, wherein the optical path of the central light beam is greater than the optical path of the oblique light beam (i.e., the optical path of the oblique field of view is smaller than the optical path of the central field of view); when the optical mirror 2 and the optical mirror 2 perform planar motion in opposite directions (i.e., when the optical mirror 1 and the optical mirror 2 are away from each other at the same time), an optical path difference is also generated, and the change in the optical path of the oblique field of view is greater than the change in the optical path of the central field of view; by designing the structural dimensions and motion speed ratio of the optical mirror 1 and the optical mirror 2, the optical path difference generated by the oblique field of view beam and the central field of view beam during the motion process can be equal. The motion distance of the optical mirror 1 and the optical mirror 2 is designed to achieve the spectral resolution requirement under the required field of view.

[0064] When the optical mirror 2 is in planar motion, when the optical mirror 1 and the optical mirror 2 are moving away from each other at the same time, the thickness of the optical element decreases and the optical path decreases. When the optical mirror 1 and the optical mirror 2 are moving close to each other at the same time, the thickness of the optical element increases and the optical path increases. In this process, the optical path of the light beam in the optical medium changes. The change in the optical path is related to the field angle of the incident light beam. The change in the optical path of the oblique light beam is greater than the change in the optical path of the central light beam. Therefore, in the process of the optical path difference generated by the reflection surface of the optical mirror 2, the amount of optical path difference caused by the beam broadening phenomenon that the oblique light beam generates less than the central light beam is compensated. In the process of motion, this structure can ensure that the optical mirror surfaces of the optical mirror 1 and the optical mirror 2 have good translation characteristics and interference performance.

[0065] The size of the driving force can control the distance that the optical second mirror 2 moves. By designing the size of the optical elements in the optical second mirror 2 and the optical first mirror 1, the speed ratio of the movement and the distance, the optical path of all light beams can be made consistent, thereby achieving the spectral resolution reflected by the cumulative effect of the optical path difference of all light beams in a field of view meeting the requirements and the consistent spectral center wave number.

[0066] The motion mechanism of the method for generating optical path difference for large field of view and high spectral resolution detection in the first embodiment of the present invention breaks through the limitation of field of view on spectral resolution and satisfies the application occasions where large field of view and high spectral resolution are required at the same time. It is applied to infrared hyperspectral atmospheric detectors. This instrument can realize large-scale, all-day, long-period, and continuous detection of the earth's atmosphere, ocean, and terrestrial ecological environment, and is used to better obtain the temporal and spatial distribution and change characteristics of the global climate.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution, characterized in that: The motion mechanism comprises an optical first mirror (1), an optical second mirror (2), a first mirror seat (3), a second mirror seat (5), a first mirror spring (81) and a second mirror spring (91) of a first group, and a second mirror spring (82) and a second mirror spring (92) of a second group, wherein a first inner fixing plate (61) and a first outer fixing plate (71) are respectively provided with inner recesses at corresponding positions, and the two inner recesses together form a first groove (60), a fixed end of the first mirror spring (81) of the first group is connected to the first mirror seat (3), and the first mirror spring (81) of the first group is connected to the second mirror seat (3). An inner fixing plate (61) and a first outer fixing plate (71) are clamped, a movable end of a mirror spring (81) of the first group is connected to the first fixing plate (101) located in the first groove (60), a fixed end of a second mirror spring (91) of the first group is connected to a second mirror seat (5), a movable end of the second mirror spring (91) of the first group is clamped by the first inner fixing plate (61) and the first outer fixing plate (71), and the mirror spring (81) of the first group, the first inner fixing plate (61) and the second mirror spring (91) of the first group form a first spring connecting rod; The second inner fixing plate (62) and the second outer fixing plate (72) are each provided with an inner concave portion at corresponding positions, and the two inner concave portions together form a second groove (70); the fixed end of a mirror spring (82) of the second group is connected to a mirror seat (3); the mirror spring (82) of the second group is clamped by the second inner fixing plate (62) and the second outer fixing plate (72); the movable end of the mirror spring (82) of the second group is connected to the second fixing plate (102) located in the second groove (70); the fixed end of the second mirror spring (92) of the second group is connected to the mirror seat (5); the movable end of the second mirror spring (92) of the second group is clamped by the second inner fixing plate (62) and the second outer fixing plate (72); the mirror spring (82) of the second group, the second inner fixing plate (62) and the second mirror spring (92) of the second group form a second spring connecting rod; The first groove (60) and the second groove (70) are located correspondingly; When the two-mirror base (5) moves with the optical two mirrors (2) in a plane, the first spring link uses the first fixed plate (101) as a fulcrum, and the second spring link uses the second fixed plate (102) as a fulcrum. The first spring link and the second spring link rotate in the same plane and drive the one-mirror base (3) and the optical one mirror (1) to make a plane movement in the opposite direction to the optical two mirrors (2).

2. According to claim 1, a motion mechanism for realizing a method for generating a large field of view and high spectral resolution detection optical path difference, characterized in that: The motion mechanism also includes a first clamping plate (41), a second clamping plate (42), a third clamping plate (43) and a fourth clamping plate (44); a fixed end of a mirror spring (81) of the first group is fixed between the first clamping plate (41) and a mirror seat (3) by means of screws; a fixed end of a second mirror spring (91) of the first group is fixed between the second clamping plate (42) and a mirror seat (5) by means of screws; a fixed end of a mirror spring (82) of the second group is fixed between the third clamping plate (43) and a mirror seat (3) by means of screws; and a fixed end of a second mirror spring (92) of the second group is fixed between the fourth clamping plate (44) and a mirror seat (5) by means of screws.

3. According to claim 2, a motion mechanism for realizing a method for generating a large field of view and high spectral resolution detection optical path difference, characterized in that: One end of the first mirror seat (3) corresponding to the first clamping plate (41) is the first end, and the lower surface of the first end is flush with the lower edge of the first clamping plate (41); one end of the second mirror seat (5) corresponding to the second clamping plate (42) is the second end, and the upper surface of the second end is flush with the upper edge of the second clamping plate (42); one end of the first mirror seat (3) corresponding to the third clamping plate (43) is the third end, and the lower surface of the third end is flush with the lower edge of the third clamping plate (43); one end of the second mirror seat (5) corresponding to the fourth clamping plate (44) is the fourth end, and the upper surface of the fourth end is flush with the upper edge of the fourth clamping plate (44).

4. A motion mechanism for realizing a method for generating a large field of view and high spectral resolution detection optical path difference according to claim 1, 2 or 3, characterized in that: A first distance is set between the lower surface of the first mirror seat (3) and the upper surface of the first inner fixing plate (61), a second distance is set between the lower surface of the first mirror seat (3) and the upper surface of the second inner fixing plate (62), and the first distance and the second distance are equal; a third distance is set between the upper surface of the second mirror seat (5) and the lower surface of the first inner fixing plate (61), a fourth distance is set between the upper surface of the second mirror seat (5) and the lower surface of the second inner fixing plate (62), and the third distance and the fourth distance are equal; The outer frame dimensions of the first inner fixing plate (61), the first outer fixing plate (71), the second inner fixing plate (62) and the second outer fixing plate (72) are all the same; The distance between the upper edge of the first fixing plate (101) and the upper surface of the first groove (60) is equal to the distance between the upper edge of the second fixing plate (102) and the upper surface of the second groove (70).

5. According to claim 4, a motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution, characterized in that: The first mirror base (3) and the second mirror base (5) are two square plates or circular frames with the same size.

6. The motion mechanism for realizing the method for generating optical path difference for detection with large field of view and high spectral resolution according to claim 5, characterized in that: The first optical mirror (1) and the second optical mirror (2) are both wedge mirrors, and the first inclined surface of the first optical mirror (1) and the second inclined surface of the second optical mirror (2) are opposite to each other; The first mirror spring (81) and the second mirror spring (91) of the first group, and the first mirror spring (82) and the second mirror spring (92) of the second group are all made of spring sheets, and the spring sheets are made of beryllium bronze material; The first mirror base (3), the second mirror base (5), the first clamping plate (41), the second clamping plate (42), the third clamping plate (43), the fourth clamping plate (44), the first inner fixing plate (61), the first outer fixing plate (71), the second inner fixing plate (62) and the second outer fixing plate (72) are all made of metal aluminum material.

7. A motion mechanism for realizing a method for generating an optical path difference for detection with a large field of view and high spectral resolution according to claim 6, characterized in that: A line connecting the centers of the two mirror springs (91) of the first group and the centers of the two mirror springs (92) of the second group forms a second straight line, and a line connecting the center of the one mirror spring (81) of the first group and the center of the one mirror spring (82) of the second group forms a first straight line, the first straight line and the second straight line are parallel, and the two form a reference plane; The two-mirror mirror base (5) carries the two optical mirrors (2) in a plane motion, which refers to the movement of the two optical mirrors (2) in a plane parallel to the reference plane; the one-mirror mirror base (3) carries the one optical mirror (1) in a plane motion, which refers to the movement of the one optical mirror (1) in a plane parallel to the reference plane.

8. The motion mechanism for realizing the method for generating optical path difference of large field of view and high spectral resolution detection according to claim 7, characterized in that After the optical mirror (1) is rotated 180° clockwise, it is placed in the same direction as the optical mirror (2); The first inclined surface of the optical first mirror (1) is parallel to the reference plane, and the second inclined surface of the optical second mirror (2) is parallel to the reference plane.

9. The motion mechanism for realizing the method for generating optical path difference for large field of view and high spectral resolution detection according to claim 8, characterized in that: The optical first mirror (1) is connected to the first mirror base (3) via a first Z-shaped plate (12), the optical second mirror (2) is connected to the second mirror base (5) via a second Z-shaped plate (22), and the center of gravity of the motion mechanism is balanced to above the geometric center of the second mirror base (5).

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