A CCD splicing and adjustment mechanism for space cameras

Abstract

The present invention relates to the field of aerospace remote sensing technology, and in particular to a space camera CCD splicing and adjustment mechanism, which can achieve parallelism, overlap, spacing, and colinearity between multiple CCDs. Specifically, it includes a transfer unit, which can drive the fixed frame to move in the X direction and the Y direction, so that the CCD sensor can reach a preset position on the CCD substrate; the high-power microscope can obtain the preset precise position that the CCD sensor can reach at the preset position; the adjustment unit can adjust the fixed frame to the preset precise position, and lock the fixed frame at the preset precise position through a locking mechanism; the advantages of this technical solution are good positioning, stable system, simple structure, easy operation, and the adjustment accuracy of the focus surface CCD sensor is also very high, which is suitable for CCD splicing work of various widths, and greatly improves the work efficiency of CCD splicing.

Description

Technical Field

[0001] The invention relates to the technical field of aerospace remote sensing, and in particular to a CCD splicing and adjusting mechanism for a space camera. Background Art

[0002] In the current method, in the CCD stitching work, the main task of CCD stitching is to achieve regular arrangement of two or more CCD sensors in space, so that the parallelism, overlap, spacing and colinearity accuracy requirements can be achieved between multiple CCDs, and the positioning work requirements for CCD sensors in the CCD stitching work can be met.

[0003] The existing CCD stitching instrument is a kind of work platform made of marble, the two-dimensional workbench and the lifting platform are guided by ball linear guides, the feed transmission adopts ball screws and long working distance microscopes for alignment and detection; the linear guide guidance accuracy is 2", the orthogonality is 2", the feed resolution is 1μm, the focal depth of the long working distance microscope on the Z axis is better than 0.005mm, and the installation accuracy of the focal plane and the CCD stitching instrument in all directions can be adjusted to within 1". The function of the CCD stitching instrument is to detect the position of the CCD mark point (the mark point is generally a triangle mark, indicating the first and last pixel positions of the effective photosensitive area of ​​the sensor) through a high-power microscope, and move along the XYZ axis to record the moving distance. Summary of the invention

[0004] The present invention aims to solve the problem in the prior art of lack of a splicing and adjusting mechanism whose main task in CCD splicing is to realize regular arrangement of two or more CCD sensors in space so that the parallelism, overlap, spacing and linear accuracy of multiple CCDs meet the requirements (the accuracy requirements are all ±0.002mm). A space camera CCD splicing and adjusting mechanism is provided, through which the splicing accuracy of each item can be adjusted to within 0.001mm.

[0005] The current method is to adjust the CCD mark point position directly by mechanical fine-tuning and tapping the CCD sensor component. This method has the following problems:

[0006] 1. It is easy to damage the CCD sensor component structure;

[0007] 2. Adjust the direction coupling, interfere with each other, and repeat operations frequently, resulting in low work efficiency;

[0008] 3. The adjustment accuracy resolution is not enough, and it is difficult to achieve a higher stitching accuracy. The stitching accuracy achieved by this method is generally difficult to be better than 0.002mm.

[0009] Taking the above method as an example, three CCDs are selected for splicing, and the following results are obtained through direct operation, where 1, 2, 3, 4, 5, and 6 are CCD mark point positions, and a, b, and c are the numbers of CCD sensors.

[0010] The stitching accuracy requirements are as follows: the straightness of a single-row CCD is ±0.002mm; the parallelism of two-row CCD is ±0.002mm; the distance accuracy between two-row CCD is ±0.002mm; the overlap accuracy between two-row CCD is ±0.002mm.

[0011]

[0012] The following splicing accuracy is obtained by analyzing the measured results:

[0013]

[0014] It can be seen that the splicing accuracy meets the splicing requirements, and the splicing accuracy is better than ± 0.002mm, but the accuracy still needs to be improved and redundant space needs to be reserved.

[0015] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0016] A space camera CCD splicing and adjustment mechanism, comprising:

[0017] A fixed frame, which is used to fix the CCD sensor;

[0018] A transfer unit capable of driving the fixed frame to move in the X direction and the Y direction so that the CCD sensor can reach a preset position on the CCD substrate;

[0019] A high-power microscope capable of obtaining a preset precise position that a CCD sensor can reach at said preset position;

[0020] an adjusting unit, which is capable of adjusting the fixing frame to reach the preset precise position and locking the fixing frame at the preset precise position through a locking mechanism;

[0021] The preset precise position is the CCD mounting hole.

[0022] Specifically, the transfer unit includes a plurality of transfer mechanisms;

[0023] Wherein, a group of the transfer mechanisms are arranged in the X direction and on both sides of the CCD substrate;

[0024] Wherein, a group of transfer mechanisms are arranged in the Y direction.

[0025] Specifically, each of the transfer mechanisms is detachably connected to the fixed frame via an adjustment unit corresponding thereto;

[0026] Each of the transfer mechanisms comprises:

[0027] guide;

[0028] The sliding block is connected to the guide rail, and the guide rail is arranged on the supporting frame.

[0029] Specifically, the CCD substrate is overlapped on the bearing transverse plate at both ends in the X direction, and two groups of support frames are also overlapped on the bearing transverse plate, and a gap area is formed between the two groups of support frames and the CCD substrate.

[0030] Specifically, a group of support frames are arranged in the Y direction, and working slide blocks are connected to the two ends of the support frames respectively. The working slide blocks are connected to the guide rails arranged in the X direction.

[0031] Specifically, the adjustment unit includes:

[0032] A transition assembly having a first connection end and a second connection end, wherein the first connection end is fixedly connected to a side of the slider facing the fixing frame;

[0033] The second connecting end can extend to the bottom of the supporting frame;

[0034] A first locking screw is provided on one side of the adapter assembly;

[0035] Two sets of parallel-arranged displacement adjustment shaft assemblies can be provided on each of the adapter assemblies;

[0036] Each of the displacement adjustment shaft assemblies comprises:

[0037] A displacement adjustment shaft, one end of which passes through the connection side of the adapter assembly and is rotatably connected to a shaft hole formed on the support frame;

[0038] The other end of the displacement adjustment shaft is detachably connected to the fixing frame via a fixing cap.

[0039] Specifically, a switching assembly is connected to one side of the working slider;

[0040] The adapter assembly has a first connection end and a second connection end, and the first connection end is fixedly connected to the side of the slider facing the fixing frame;

[0041] The second connecting end is located below the supporting frame;

[0042] A first locking screw is disposed on one side of the adapter assembly.

[0043] Specifically, the locking mechanism comprises:

[0044] A rubber pad, which is attached to the bottom of the support frame;

[0045] The locking screw can be threaded on the second connection end of the adapter assembly so that when the locking screw is screwed in, the locking screw can abut against the locking screw so that the adapter assembly, the slider and the support frame remain fixed and enter a locked state.

[0046] Specifically, the displacement adjustment shaft includes:

[0047] A first shaft body portion, which is cylindrical;

[0048] A shaft portion, connected to the first shaft portion, and having a spherical portion at a second end thereof;

[0049] A hemispherical connection structure is provided on one side of the fixed frame that can be connected to the displacement adjustment shaft, and the spherical portion can be partially embedded in the hemispherical connection structure;

[0050] A fixing cap can be sleeved and connected on the shaft portion and has a hemispherical limiting space to limit the spherical portion, and the fixing cap can be screwed and connected on the outer periphery of the hemispherical connection structure.

[0051] Specifically, it also includes:

[0052] A load-bearing vertical plate, on which the load-bearing horizontal plate is mounted;

[0053] The bearing vertical plate is placed on a marble platform;

[0054] The high-power microscope is arranged below the carrying horizontal plate;

[0055] The CCD splicing device is arranged on one side of the bearing horizontal plate.

[0056] The present invention has the following beneficial effects:

[0057] Firstly, this technical solution has good positioning, stable system, simple structure, easy operation, and the adjustment accuracy of the focus surface CCD sensor is also very high. It is suitable for CCD splicing work of various widths and greatly improves the work efficiency of CCD splicing.

[0058] Secondly, under similar requirements, by improving the length of the displacement adjustment shaft and the pitch of the thread, it can also be used for precise adjustment of other similar mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] Figure 1It is a schematic diagram of the main structure of the present invention;

[0061] Figure 2 It is a cross-sectional view of the displacement adjustment mechanism of the present invention;

[0062] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0063] Figure 4 It is a schematic diagram of CCD sensor and marking points;

[0064] Figure 5 It is a CCD sensor.

[0065] The reference numerals in the figures indicate:

[0066] 1. Slider, 2. Displacement adjustment shaft, 3. Guide rail, 4. Slider, 5. Adapter assembly, 6. Displacement adjustment shaft, 7. Support frame, 8. Displacement adjustment shaft, 9. Fixing cap, 10. Fixing frame, 11. CCD sensor, 12. CCD substrate, 13. Loading horizontal plate, 21. CCD mounting hole, 22. Locking screw, 23. Locking screw, 24. Rubber cushion, 25. Loading vertical plate, 26. CCD splicing instrument, 27. High-power microscope, 28. Marble platform;

[0067] 71. Axial hole, 81. First shaft body portion, 82. Shaft portion, 83. Spherical portion, 84. Hemispherical connection structure. DETAILED DESCRIPTION

[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention; it should be noted that in this application, for the convenience of description, the "left side" in the current view is the "first end", the "right side" is the "second end", the "upper side" is the "first end", and the "lower side" is the "second end". The purpose of such description is to clearly express the technical solution, and it should not be understood as an improper limitation on the technical solution of this application.

[0069] Working principle description: The CCD splicing and adjustment mechanism of the space camera is mainly divided into three parts: transfer unit, adjustment unit and locking mechanism;

[0070] The function of the transfer unit is to transfer the position of the fixing frame 10, and the function of the fixing frame 10 is to fix the CCD sensor 11 and adjust the CCD sensor 11 to a position near the theoretical position, that is, the preset position;

[0071] The size of the adjustment unit is consistent with the outer size of the CCD sensor to make it fit better. The function is to move the fixing frame 10 by displacing the adjustment shaft 8, so that the fixing frame 10 drives the CCD sensor to move 11 to the theoretical position, the preset position; the function of the locking mechanism is the slider and the guide rail, so that the operation has a stable environment;

[0072] The fixing frame 10 is moved to the desired theoretical position by the transfer unit and fixed with a locking mechanism. The theoretical position of the CCD sensor 11 is located by the high-power microscope 27 of the CCD stitching instrument 26. The adjustment mechanism fine-tunes the CCD sensor 11 so that the two marking points of the CCD sensor 11 reach the preset precise position and meet the accuracy requirements; then the fixing frame 10 is disassembled, and the fixing frame is moved to the theoretical position of the second sensor by the transfer unit, and the second CCD sensor is placed in the fixing frame 10. As in the above steps, the CCD sensor is adjusted to the theoretical position by the adjustment mechanism.

[0073] In a specific embodiment, the present invention provides a novel CCD splicing and adjustment mechanism for space camera CCD splicing. The structure proposed by the present invention is as follows: Figures 1 to 4 As shown. Figure 1 The transfer mechanism 100 includes the sliders 4 and guide rails 3 in the figure, and is also configured with a switching component 5, a fixed frame 10, a displacement adjustment shaft 8, and a support frame 7, that is, all the components that connect the fixed frame 10 and move the fixed frame 10 along the guide rail 3 through the slider 4, and its function is to move the fixed frame 10 to the desired position.

[0074] like Figure 1 , 2 , including four parts: a support frame 7, a displacement adjustment shaft 8, a fixing cap 9, and a fixing frame 10. The support frame 7 provides a fixed position, and the rotation displacement adjustment shaft 8 is provided to push or pull the fixing frame 10. The fixing cap 9 is screwed into the protruding structure of the fixing frame, that is, the hemispherical connection structure 84.

[0075] like Figure 2 In the locking mechanism 300, the adapter component 5, the locking screw 23, and the rubber pad 24, wherein the rubber pad 24 is bonded to the support frame 7 by special glue, and the adapter component 5, the slider 4 and the support frame 7 are fixed together by rotating the locking screw 23.

[0076] In a specific embodiment, the present invention is according to Figures 1 to 3 The scheme shown in the figure is implemented as follows: on the marble platform 28 of the CCD splicing instrument 26, a CCD splicing workbench is built by carrying the vertical plate 25 and the horizontal plate 13. In the CCD splicing link, the fixing frame 10 is moved to the theoretical position of the first CCD sensor 11 by the transfer mechanism, and the attached Figure 1As shown, the adjustment unit at this time is equivalent to a part of the transfer mechanism. The displacement axis of the adjustment unit is used to make the fixing frame 10 approximately at the desired position to form a preset position, and the locking mechanism is used to lock each related slider 4 so that it does not move relative to the support frame 7;

[0077] Move the high-power microscope 27 of the CCD stitching instrument to the theoretical position of the CCD sensor 11, rotate the displacement adjustment shaft 84 in the same direction, and cooperate with the displacement adjustment shaft 8 at the same time. The multiple displacement adjustment shafts 8 not only play the role of fine-tuning the fixed frame 10, but also play the role of stabilizing the fine-tuning fixed frame 10 when operating the displacement adjustment shaft 8;

[0078] At this time, the first mark point of the CCD sensor 11 can be roughly adjusted to the vicinity of the theoretical position of the high-power microscope of the CCD splicing instrument, the screws of the first CCD sensor 11 close to the first mark point can be pre-tightened, and the fine adjustment displacement adjustment shaft can be rotated to finely adjust the mark point of the CCD sensor 11 to the theoretical position of the CCD splicing instrument through the fixing frame 10;

[0079] Then fix the CCD sensor 11; move the CCD splicing instrument to the next theoretical position. Similarly, through the cooperation between the multiple displacement adjustment shafts 8, fine-tune the fixing frame 10, and adjust another mark point of the CCD sensor 11 to the second theoretical position of the CCD splicing instrument through the fixing frame 10. Since the operation will cause mutual interference between the first mark point and the second mark point, it is necessary to repeat the operation several times to adjust the second mark point of the CCD sensor 11 to the theoretical position of the high-power microscope of the CCD splicing instrument, so that the CCD sensor is adjusted to within the required accuracy range. When the position of the first CCD sensor meets the accuracy requirements, apply a standard torque to the screw;

[0080] After adjusting the first CCD sensor, loosen the locking mechanism, disassemble the fixing frame 10, move the fixing frame 10 to the theoretical position of the second CCD sensor through the transfer mechanism, and use the locking assembly to lock it so that it no longer slides relative to each other. Use the high-power microscope of the CCD splicing instrument to locate the first marking point position of the second CCD sensor. The operation is consistent with the above steps. Rotate the displacement adjustment shafts 8 to drive the fixing frame 10 and the CCD sensor to move to achieve the purpose of CCD position adjustment. The same is true for the other marking point until the CCD splicing is finally completed. For other CCD splicing with a large focal plane, it is necessary to replace the guide rails and displacement adjustment tooling of different lengths.

[0081] In a specific embodiment, for more detailed configuration relationships, please refer to Figure 1-3As shown, a space camera CCD splicing and adjustment mechanism includes: a fixed frame 10, which is used to fix a CCD sensor 11; a transfer unit, which can drive the fixed frame 10 to move in the X direction and the Y direction, so that the CCD sensor 11 can reach a preset position located on a CCD substrate 12; a high-power microscope 27, which can obtain a preset precise position that the CCD sensor 11 can reach at the preset position; an adjustment unit 200, which can adjust the fixed frame 10 to reach the preset precise position, and lock the fixed frame 10 at the preset precise position through a locking mechanism 300; the preset precise position is the CCD mounting hole 21.

[0082] For more details, see Figure 1-3 As shown, the transfer unit includes a plurality of transfer mechanisms 100;

[0083] Wherein, a group of transfer mechanisms 100 are arranged in the X direction and on both sides of the CCD substrate 12;

[0084] A group of transfer mechanisms 100 are arranged in the Y direction.

[0085] Specifically, each transfer mechanism 100 is detachably connected to the fixed frame 10 via its corresponding adjustment unit 200;

[0086] Each transfer mechanism 100 comprises:

[0087] Guide rail 3;

[0088] The slide block 4 is connected to the guide rail 3 , and the guide rail 3 is arranged on the support frame 7 .

[0089] Also, see Figure 1-3 As shown, the two ends of the CCD substrate 12 in the X direction are overlapped on the bearing transverse plate 13 , and two groups of support frames 7 are also overlapped on the bearing transverse plate 13 , and a gap area is formed between the two groups of support frames 7 and the CCD substrate 12 .

[0090] The device further comprises a group of support frames 7 arranged in the Y direction, with working slide blocks 1 connected to both ends thereof, and the working slide blocks 1 are connected to the guide rails 3 arranged in the X direction.

[0091] In a specific embodiment, the adjustment unit 200 includes: an adapter assembly 5, which has a first connection end 51 and a second connection end 52, the first connection end is fixedly connected to the side of the slider 4 facing the fixed frame 10; the second connection end 52 can extend to the bottom of the support frame 7; a first locking screw 22 is provided on one side of the adapter assembly 5; two groups of parallelly arranged displacement adjustment shaft assemblies can be provided on each adapter assembly 5; each displacement adjustment shaft assembly includes: a displacement adjustment shaft 8, one end of which passes through the connection side 53 of the adapter assembly 5 and is rotatably connected to the shaft hole 71 formed on the support frame 7; the other end of the displacement adjustment shaft 8 is detachably connected to the fixed frame 10 through a fixing cap 9.

[0092] In a more preferred factual manner, see Figure 1-3 As shown, one side of the working slider 1 is connected to an adapter assembly 5; the adapter assembly 5 has a first connection end 51 and a second connection end 52, and the first connection end is fixedly connected to the slider 4 toward the fixed frame 10; the second connection end 52 is located below the support frame 7; a first locking screw 22 is provided on one side of the adapter assembly 5.

[0093] In a more preferred embodiment, the locking mechanism 30 includes: a rubber pad 24, which is adhered to the bottom of the support frame 7; a locking screw 23, which can be screwed on the second connecting end 52 of the adapter assembly 5, so that when the locking screw 23 is screwed in, the locking screw 23 can abut against the locking screw 23 so that the adapter assembly 5, the slider 4 and the support frame 7 remain fixed and enter a locked state.

[0094] See also Figure 1-3 As shown, the displacement adjustment shaft 8 includes: a first shaft body portion 81, which is cylindrical;

[0095] The shaft portion 82 is connected to the first shaft portion 81, and has a spherical portion 83 at its second end; the fixed frame 10 is capable of being connected to a side of the displacement adjustment shaft 8 and is provided with a hemispherical connection structure 84, and the spherical portion 83 can be partially embedded in the hemispherical connection structure 84; the fixing cap 9 can be sleeved and connected to the shaft portion 82, and has a hemispherical limiting space to limit the spherical portion 83, and the fixing cap 9 can be screwed and connected to the outer periphery of the hemispherical connection structure 84.

[0096] Also, see Figure 3 As shown, it also includes: a supporting vertical plate 25, on which a supporting horizontal plate 13 is mounted; the supporting vertical plate 25 is placed on a marble platform 28; a high-power microscope 27 is arranged below the supporting horizontal plate 13; and a CCD stitching device 26 is arranged on one side of the supporting horizontal plate 13.

[0097] Firstly, this technical solution has good positioning, stable system, simple structure, easy operation, and the adjustment accuracy of the focus surface CCD sensor is also very high. It is suitable for CCD splicing work of various widths and greatly improves the work efficiency of CCD splicing.

[0098] Secondly, under similar requirements, by improving the length of the displacement adjustment shaft and the pitch of the thread, it can also be used for precise adjustment of other similar mechanisms.

[0099] The focal plane is stitched according to the scheme of the present invention to obtain the following data;

[0100]

[0101] The following splicing accuracy is obtained by analyzing the measured results:

[0102]

[0103] It can be seen that the splicing accuracy fully meets the splicing requirements, each splicing accuracy is better than 0.001mm, and the work efficiency is high.

[0104] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A space camera CCD splicing and adjustment mechanism, characterized in that: include: A fixed frame (10) for fixing a CCD sensor (11); A transfer unit capable of driving the fixed frame (10) to move in the X direction and the Y direction so that the CCD sensor (11) can reach a preset position on the CCD substrate (12); A high-power microscope (27) capable of displaying the preset precise position that the CCD sensor (11) can reach at the preset position; an adjustment unit (200) capable of adjusting the fixed frame (10) to reach the preset precise position, and locking the fixed frame (10) at the preset precise position through a locking mechanism (300); The preset precise position is a CCD mounting hole (21); The transfer unit includes a plurality of transfer mechanisms (100); Wherein, a group of the transfer mechanisms (100) are respectively arranged in the X direction and on both sides of the CCD substrate (12); Wherein, a group of the transfer mechanisms (100) are arranged in the Y direction; Each of the transfer mechanisms (100) is detachably connected to the fixed frame (10) via a corresponding adjustment unit (200); Each of the transfer mechanisms (100) comprises: Guide rail (3); A slider (4) which is connected to the guide rail (3), and the guide rail (3) is arranged on a support frame (7); The CCD substrate (12) is overlapped on the bearing transverse plate (13) at both ends in the X direction, and two groups of support frames (7) are also overlapped on the bearing transverse plate (13), and a gap area is formed between the two groups of support frames (7) and the CCD substrate (12); It also includes a group of support frames (7) arranged in the Y direction, with working slide blocks (1) connected to both ends of the support frames respectively, and the working slide blocks (1) are track-connected to the guide rails (3) arranged in the X direction; The adjustment unit (200) comprises: An adapter assembly (5) having a first connection end (51) and a second connection end (52), wherein the first connection end is fixedly connected to a side of the slider (4) facing the fixed frame (10); The second connecting end (52) can extend to below the supporting frame (7); A first locking screw (22) is provided on one side of the adapter assembly (5); Each of the adapter components (5) can be provided with two sets of displacement adjustment shaft components arranged in parallel; Each of the displacement adjustment shaft assemblies comprises: A displacement adjustment shaft (8), one end of which passes through the connection side (53) of the adapter assembly (5) and is rotatably connected to a shaft hole (71) formed on the support frame (7); The other end of the displacement adjustment shaft (8) is detachably connected to the fixed frame (10) via a fixing cap (9).

2. The space camera CCD splicing and adjustment mechanism according to claim 1, characterized in that: One side of the working slide block (1) is connected to a switching assembly (5); The adapter assembly (5) has a first connection end (51) and a second connection end (52), and the first connection end is fixedly connected to a side of the slider (4) facing the fixed frame (10); The second connection end (52) is located below the support frame (7); A first locking screw (22) is provided on one side of the adapter assembly (5).

3. The space camera CCD splicing and adjustment mechanism as claimed in claim 2, characterized in that: The locking mechanism (300) comprises: A rubber pad (24) adhered to the bottom of the support frame (7); The locking screw (23) can be screwed onto the second connection end (52) of the adapter assembly (5), so that when the locking screw (23) is screwed in, the locking screw (23) can abut against the locking screw (23) so that the adapter assembly (5), the slider (4) and the support frame (7) remain fixed and enter a locked state.

4. The space camera CCD splicing and adjustment mechanism as claimed in claim 3, characterized in that: The displacement adjustment shaft (8) comprises: A first shaft body (81) which is cylindrical; A shaft portion (82) connected to the first shaft portion (81), and having a spherical portion (83) at a second end thereof; A hemispherical connection structure (84) is provided on one side of the fixed frame (10) that can be connected to the displacement adjustment shaft (8), and the spherical portion (83) can be partially embedded in the hemispherical connection structure (84); A fixing cap (9) can be sleeved and connected to the shaft portion (82) and has a hemispherical limiting space to limit the spherical portion (83), and the fixing cap (9) can be screwed and connected to the outer periphery of the hemispherical connection structure (84).

5. The space camera CCD splicing and adjustment mechanism as claimed in claim 4, characterized in that: Also included are: A load-bearing vertical plate (25), on which the load-bearing horizontal plate (13) is mounted; The supporting vertical plate (25) is placed on a marble platform (28); The high-power microscope (27) is arranged below the carrying horizontal plate (13); The CCD splicing device (26) is arranged on one side of the bearing transverse plate (13).

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