Variable Conical Crystal Multi-Dimensional Adjustment Mechanism, Method and Variable Conical Crystal Optical Path Calibration System

Abstract

The present invention relates to the field of laser imaging technology, and specifically relates to a variable conical crystal multi-dimensional adjustment mechanism, a method, and a variable conical crystal optical path calibration system. The variable conical crystal multi-dimensional adjustment mechanism includes a housing, a main body, a crystal box, and a multi-dimensional adjustment component; the main body is embedded in the housing and is movably connected to the housing; the crystal box is installed on the top of the main body through a connection component; the crystal box includes a first cavity, a first extension part, and a second extension part that are integrally formed; the multi-dimensional adjustment component includes: a first adjustment component, which is arranged on the housing and is used to adjust the horizontal displacement of the main body; a second adjustment component, which is arranged on the main body and is used to adjust the height of the crystal box; a third adjustment component, which is arranged on the main body and is used to adjust the rotation angle of the crystal box; a fourth adjustment component, which is arranged on the main body and is used to adjust the pitch angle of the crystal box. The purpose is to achieve multi-dimensional high-precision adjustment of the variable conical crystal.

Description

Technical Field

[0001] The present invention relates to the technical field of laser imaging, and particularly to a variable conical crystal multi-dimensional adjustment mechanism, method, and variable conical crystal optical path calibration system. Background Art

[0002] As a core optical element for X-ray spectroscopy diagnosis, the variable conical crystal can compress and focus the divergent X-ray spectrum in the spatial dimension through its unique gradient curvature surface structure, forming a line focus spot perpendicular to the crystal surface, thereby improving the collection efficiency and signal-to-noise ratio of the X-ray signal. Since the inclination angle of the curved surface generatrix and the radius of curvature of the variable conical crystal show continuous spatial changes, the spatial pose calibration needs to simultaneously satisfy the control of three mutually coupled degrees of freedom: Bragg diffraction angle matching, crystal plane normal orientation alignment, and focal plane conjugate distance adjustment, and the adjustment accuracy of each dimension needs to reach sub-millimeter-level translation and milliradian-level angular resolution. Therefore, it is necessary to complete the precise pre-calibration of the optical path parameters and mechanical state locking at the laboratory stage.

[0003] The existing laboratory calibration of variable conical crystals usually adopts an adjustment scheme that combines a steel ruler with stacked translation stages: This scheme first roughly locates the crystal's spatial position through a mechanical steel ruler, and then uses three independent translation stages in series to achieve orthogonal translation adjustment of the X, Y, and Z axes. However, this method has two fundamental limitations: First, the steel ruler can only achieve macroscopic position calibration of the crystal, and it can neither quantitatively detect the rotational degree of freedom around the curved surface generatrix nor precisely control the spatial angle between the Bragg diffraction plane normal direction and the incident X-ray beam, resulting in a large calibration error for the crystal azimuth angle. Second, although the stacked translation stage architecture can provide basic three-axis translation functions, there are errors such as mechanical backlash and platform yaw angle between the motion pairs of each axis; the above defects make it difficult for the traditional adjustment scheme to achieve multi-dimensional high-precision adjustment of variable conical crystals when facing the high-precision spatial positioning and complex attitude coordination control requirements of high-energy physics experiments, thereby restricting the accuracy and reliability of X-ray spectroscopy diagnosis. Summary of the Invention

[0004] In order to achieve multi-dimensional high-precision adjustment of variable conical crystals, the present invention provides a variable conical crystal multi-dimensional adjustment mechanism, method, and variable conical crystal optical path calibration system. The specific technical solutions adopted are as follows:

[0005] The technical solution of the first aspect of the present invention provides a variable conical crystal multi-dimensional adjustment mechanism, including a housing, a main body, a crystal box, and a multi-dimensional adjustment component;

[0006] The main body is embedded in the housing and is movably connected to the housing;

[0007] The crystal box is installed on the top of the main body through a connection component; the crystal box includes an integrally formed first cavity, a first extension part and a second extension part;

[0008] The multi-dimensional adjustment component includes:

[0009] A first adjustment component, arranged on the housing, for adjusting the horizontal displacement of the main body;

[0010] A second adjustment component, arranged on the main body, for adjusting the height of the crystal box;

[0011] A third adjustment component, arranged on the main body, for adjusting the rotation angle of the crystal box;

[0012] A fourth adjustment component, arranged on the main body, for adjusting the pitch angle of the crystal box.

[0013] Further, the first adjustment component includes a first double-screw drive mechanism and a second double-screw drive mechanism that are detachably connected to the housing; the first double-screw drive mechanism is arranged along the x-axis direction for adjusting the two-way translation of the crystal box along the x-axis; the second double-screw drive mechanism is arranged along the y-axis direction for adjusting the two-way translation of the crystal box along the y-axis.

[0014] Further, the second adjustment component is arranged at the bottom of the second extension part. The second adjustment component includes a first screw rod, and the first screw rod penetrates through the housing and the main body and is connected to a first limit hole at the bottom of the second extension part. The second adjustment component is used to adjust the vertical displacement of the crystal box along the z-axis.

[0015] Further, the third adjustment component is arranged at the bottom of the second extension part and is symmetrically arranged with the second adjustment component. The third adjustment component includes a second screw rod, and the second screw rod penetrates through the housing and the main body and is connected to a second limit hole at the bottom of the second extension part. The third adjustment component is used to adjust the rotation angle of the crystal box around the y-axis.

[0016] Further, the fourth adjustment component is arranged at the bottom of the first extension part. The fourth adjustment component includes a third screw rod, and the third screw rod penetrates through the housing and the main body and is connected to a third limit hole at the bottom of the first extension part. The fourth adjustment component is used to adjust the pitch angle of the crystal box around the x-axis.

[0017] Further, the connection component includes a first limit component. The first limit component includes a column, a first spring and a first sleeve; the first sleeve is sleeved on the column. One end of the column is connected to a fourth limit hole in the middle of the crystal box through a ball head, and the other end of the column is connected to the inner wall of the first sleeve through the first spring. The first sleeve is embedded in a first through hole at the top of the main body and fixed through a second through hole at the bottom of the main body.

[0018] Further, the connection component further includes a plurality of groups of second limiting components disposed between the main body and the crystal box. The plurality of groups of second limiting components include second sleeves and second springs; one end of the second spring is connected to a fifth limiting hole on the crystal box, and the other end of the second spring is connected to a sixth limiting hole on the main body. The second sleeve is disposed between the main body and the crystal box and the second sleeve is disposed outside the second spring.

[0019] Further, the adjustment mechanism further includes a reference positioning component. The reference positioning component includes a pull-ring pin and a positioning hole. When the pull-ring pin is inserted into the positioning hole on the housing, the initial zero position of the crystal box is locked; after the pull-ring pin is pulled out, the adjustment freedom is maintained by the second limiting component.

[0020] The technical solution of the second aspect of the present invention provides a variable conical surface bent crystal multi-dimensional adjustment method. Using the variable conical surface bent crystal multi-dimensional adjustment mechanism described in the technical solution of the first aspect of the present invention, the method includes:

[0021] Install the variable conical surface bent crystal in the first cavity of the crystal box;

[0022] Irradiate the variable conical surface bent crystal with a visible light source to generate a focused line on the imaging plate;

[0023] Based on the image acquisition device, the morphology of the focused line on the imaging plate is monitored in real time, and the horizontal displacement of the variable conical surface bent crystal is adjusted by using the first adjustment component;

[0024] Use the second adjustment component, the third adjustment component, and the fourth adjustment component to adjust the height, rotation angle, and pitch angle of the variable conical surface bent crystal until the focused line reaches a preset state.

[0025] The technical solution of the third aspect of the present invention provides a variable conical surface bent crystal optical path calibration system. Using the variable conical surface bent crystal multi-dimensional adjustment mechanism described in the technical solution of the first aspect of the present invention, the system includes:

[0026] A white light source module for providing a white light source with a spot size not greater than 80 microns;

[0027] A variable conical surface bent crystal installed in the first cavity of the crystal box of the variable conical surface bent crystal multi-dimensional adjustment mechanism for diffracting the incident white light source of the white light source irradiation module into a focused line;

[0028] An imaging plate for recording the focused line diffracted by the variable conical surface bent crystal;

[0029] An image acquisition device for obtaining the position information of the focused line.

[0030] The present invention has the following beneficial effects:

[0031] The variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by the present invention installs the variable-cone surface bent crystal in a crystal box. Through the first adjustment component, the second adjustment component, the third adjustment component, and the fourth adjustment component of the multi-dimensional adjustment component, it can synchronously adjust multiple dimensions of the variable-cone surface bent crystal, such as horizontal displacement, height, rotation angle, and pitch angle, so as to achieve high-precision focusing of the diffraction signal of the variable-cone surface bent crystal and avoid the cumulative error of traditional step-by-step adjustment; quickly realize the imaging attitude adjustment of the variable-cone surface bent crystal. On the other hand, based on this variable-cone surface bent crystal multi-dimensional adjustment mechanism, the variable-cone surface bent crystal multi-dimensional adjustment method and the variable-cone surface bent crystal optical path adjustment system provided by the present invention can realize a small-size white light source with a large divergence angle. The focusing line generated by the small light spot on the imaging plate is convenient for the CCD camera to accurately capture the optical path deviation and provides a clear benchmark for sub-micron-level adjustment; the large divergence angle enhances the optical path fault tolerance in a non-vacuum environment. Even if there is a small angular deviation on the crystal surface, the crystal surface can still be covered by the divergent light beam to ensure the continuity of the diffraction signal; the present invention takes into account both high-precision positioning and complex environment adaptability, providing a reliable light source basis and multi-dimensional adjustment means for high-resolution X-ray diagnosis and laser imaging experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 The overall structural schematic diagram of the variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0034] Figure 2 The front view of the variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0035] Figure 3 The top view of the variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0036] Figure 4 The bottom view of the variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0037] Figure 5 The side view of the variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0038] Figure 6 The partial structural schematic diagram of the variable-cone surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0039] Figure 7 Schematic diagram of the internal structure of the variable conical surface bent crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention;

[0040] Figure 8 Schematic diagram of the structure of the housing provided by an embodiment of the present invention;

[0041] Figure 9 Schematic diagram of the structure of the main body provided by an embodiment of the present invention;

[0042] Figure 10 Schematic diagram of the top structure of the crystal box provided by an embodiment of the present invention;

[0043] Figure 11 Schematic diagram of the bottom structure of the crystal box provided by an embodiment of the present invention;

[0044] Figure 12 Schematic diagram of the structure of the second adjustment component provided by an embodiment of the present invention;

[0045] Figure 13 Overall schematic diagram of the first limiting component provided by an embodiment of the present invention;

[0046] Figure 14 Partial schematic diagram of the first limiting component provided by an embodiment of the present invention;

[0047] Figure 15 Schematic diagram of the adjustment coordinate direction of the variable conical surface bent crystal provided by an embodiment of the present invention;

[0048] Figure 16 Generatrix schematic diagram of the variable conical surface bent crystal provided by an embodiment of the present invention;

[0049] Figure 17 Method flow chart of the variable conical surface bent crystal multi-dimensional adjustment method provided by an embodiment of the present invention;

[0050] Figure 18 Schematic diagram of the structure of the variable conical surface bent crystal optical path calibration system provided by an embodiment of the present invention;

[0051] Icons: 100 - housing, 110 - first twin-screw drive mechanism, 120 - second twin-screw drive mechanism, 200 - main body, 210 - first screw, 220 - second screw, 230 - third screw, 240 - first through hole, 250 - second through hole, 260 - sixth limit hole, 300 - crystal box, 310 - first cavity, 320 - first extension, 321 - third limit hole, 330 - second extension, 331 - first limit hole, 332 - second limit hole, 340 - fourth limit hole, 350 - fifth limit hole, 400 - first limit component, 410 - column, 420 - first spring, 430 - first sleeve, 500 - second limit component, 510 - second sleeve, 520 - second spring, 600 - pull-ring pin, 610 - positioning hole. Detailed implementation manners

[0052] In order to further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and effects of a variable conical surface bent crystal multi-dimensional adjustment mechanism, method and variable conical surface bent crystal optical path calibration system proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0054] The following specifically describes the specific solutions of a variable conical surface bent crystal multi-dimensional adjustment mechanism, method and variable conical surface bent crystal optical path calibration system provided by the present invention with reference to the accompanying drawings.

[0055] Please refer to Figures 1 to 14 As shown in the figure, which shows a schematic structural diagram of a variable conical surface bent crystal multi-dimensional adjustment mechanism provided by the present invention. The variable conical surface bent crystal multi-dimensional adjustment mechanism includes a housing 100, a main body 200, a crystal box 300 and a multi-dimensional adjustment component;

[0056] The main body 200 is embedded in the housing 100 and is movably connected to the housing 100;

[0057] The crystal box 300 is installed on the top of the main body 200 through a connection component; the crystal box 300 includes a first cavity 310, a first extension 320 and a second extension 330 which are integrally formed;

[0058] The multi-dimensional adjustment component includes:

[0059] The first adjustment component is arranged on the housing 100 and is used to adjust the horizontal displacement of the main body 200; the first adjustment component is used to adjust the position of the variable-conical surface bent crystal in a two-dimensional plane to meet the precise requirements for the crystal position during the laser imaging process;

[0060] The second adjustment component is arranged on the main body 200 and is used to adjust the height of the crystal box 300; the height position of the variable-conical surface bent crystal has an important influence on its diffraction effect and imaging quality. By adjusting the height of the crystal box 300 through the second adjustment component, the relative position between the variable-conical surface bent crystal and the incident light beam can be optimized, so that the diffraction signal can be better focused;

[0061] The third adjustment component is arranged on the main body 200 and is used to adjust the rotation angle of the crystal box 300;

[0062] The fourth adjustment component is arranged on the main body 200 and is used to adjust the pitch angle of the crystal box 300.

[0063] Specifically, please refer to Figure 8 As shown, a second cavity for accommodating the main body 200 is provided in the middle of the housing 100. The main body 200 is movably installed in the second cavity, and it is ensured that the main body 200 can move flexibly and stably in the second cavity; mounting holes for installing the first adjustment component are respectively provided on the four peripheral sides of the housing 100; please refer to Figure 3 As shown, the whole part of the main body 200 can be embedded in the second cavity, and it is ensured that the main body 200 can slide forward, backward, left and right relative to the second cavity; corresponding mounting structures also need to be processed on the main body 200 according to the second, third, and fourth adjustment components and the connecting components. Please refer to Figure 4 As shown, the first cavity 310 on the crystal box 300 is used to install the variable-conical surface bent crystal. The internal dimensions and shape of the first cavity 310 are precisely matched with the variable-conical surface bent crystal to ensure that the variable-conical surface bent crystal is firmly installed and in an accurate position after installation.

[0064] The variable-conical surface bent crystal multi-dimensional adjustment mechanism provided in this embodiment installs the variable-conical surface bent crystal in the crystal box 300. Through the first adjustment component, the second adjustment component, the third adjustment component, and the fourth adjustment component of the multi-dimensional adjustment component, the horizontal displacement, height, rotation angle, and pitch angle of the variable-conical surface bent crystal can be synchronously adjusted in multiple dimensions to achieve high-precision focusing of the diffraction signal of the variable-conical surface bent crystal and quickly realize the imaging attitude adjustment of the variable-conical surface bent crystal.

[0065] Preferably, the first adjustment assembly includes a first double-screw drive mechanism 110 and a second double-screw drive mechanism 120 that are detachably connected to the housing 100; the first double-screw drive mechanism 110 is arranged along the x-axis direction and is used to adjust the bidirectional translation of the crystal cassette 300 in the x-axis direction; the second double-screw drive mechanism 120 is arranged along the y-axis direction and is used to adjust the bidirectional translation of the crystal cassette 300 in the y-axis direction; specifically, there is a gap between the housing 100 and the main body 200, and both the first double-screw drive mechanism 110 and the second double-screw drive mechanism 120 achieve adjustment by the method of "one loose and one tight"; taking the first double-screw drive mechanism 110 as an example, the first double-screw drive mechanism 110 is composed of two parallel differential screws, and the differential screw head is provided with a scale mark, and each small grid scale corresponds to a certain displacement amount. For example, each small grid scale corresponds to a displacement of 0.01 mm, which is convenient for the operator to accurately control the adjustment amount. One end of the two screws is detachably connected to the housing 100 through a bearing seat to ensure that the screws can rotate freely and at the same time ensure their stability during the working process. The other end extends between the housing 100 and the main body 200. When the differential screw head is rotated, the "one loose and one tight" method of the two screws causes the main body 200 to generate a translational movement in the x-axis direction, thereby driving the crystal cassette 300 installed on the top of the main body 200 to achieve bidirectional translation in the x-axis direction. When the two screws are both tightened, it is in a locked state; the structure and working principle of the second double-screw drive mechanism 120 are similar to those of the first double-screw drive mechanism and will not be elaborated here.

[0066] In this embodiment, through the first double-screw drive mechanism 110 and the second double-screw drive mechanism 120, the crystal cassette 300 can achieve high-precision bidirectional translation adjustment along the x-axis and y-axis directions. In actual use, the displacement amount of the crystal cassette 300 can be accurately controlled by precisely rotating the differential screw head according to the scale mark, so as to accurately position the variable-conical surface bent crystal in the two-dimensional plane. The high-precision position adjustment can ensure that the light beam irradiates the variable-conical surface bent crystal at an ideal position, optimizing the diffraction conditions in the laser imaging process. Compared with the traditional single-screw or simple displacement adjustment method, this embodiment not only improves the adjustment accuracy, but also enhances the stability and reliability of the adjustment.

[0067] Preferably, the second adjustment component is disposed at the bottom of the second extension portion 330. The second adjustment component includes a first screw 210. The first screw 210 penetrates through the housing 100 and the main body 200 and is connected to a first limit hole 331 at the bottom of the second extension portion 330. The second adjustment component is used to adjust the vertical displacement of the crystal cassette 300 along the z-axis. The pitch of the first screw 210 is preferably 0.5 mm, and the graduation scale is equally divided into 50 parts, so that the adjustment with an accuracy of 0.01 mm can be achieved. The second adjustment component realizes the adjustment of the vertical displacement of the crystal cassette 300 along the z-axis by arranging the first screw 210 at the bottom of the second extension portion 330. The first screw 210 directly acts on the crystal cassette 300. Corresponding through holes are processed on the housing 100 and the main body 200 at the position of the first screw 210 to ensure that the screw can pass through smoothly and will not be interfered during the movement. The first screw 210 is connected to the first limit hole 331 at the bottom of the second extension portion 330. The design of the limit hole not only ensures the effective connection between the first screw 210 and the crystal cassette 300, but also restricts the movement of the crystal cassette 300 in other directions, ensuring that displacement occurs only in the z-axis direction. When the first screw 210 is rotated, due to the effect of the thread, the crystal cassette 300 will move along the axial direction of the first screw 210, that is, the z-axis direction. In a laser imaging system, accurate adjustment of the z-axis displacement is crucial for adjusting the relative height between the variable conical surface bent crystal and the laser beam. Through this high-precision adjustment, the diffraction effect of the variable conical surface bent crystal on the light beam can be further optimized, so that the diffraction signal can be focused more accurately, thereby improving the clarity and accuracy of imaging. On the other hand, in the entire multi-dimensional adjustment mechanism, the second adjustment component serves as the reference for the z-axis. When the second adjustment component, the third adjustment component, and the fourth adjustment component have the same height, the variable conical surface bent crystal is in a horizontal state. During actual operation and debugging, the operator can adjust the height of the second adjustment component and combine the third and fourth adjustment components to make them reach the same height, so as to quickly adjust the variable conical surface bent crystal to a horizontal state, providing a stable initial state for subsequent precise adjustment of parameters in other dimensions. During the assembly process, first pass the first screw 210 through the through holes on the housing 100 and the main body 200, and then connect the connecting end of the screw to the first limit hole 331 at the bottom of the second extension portion 330 of the crystal cassette 300. During the connection process, it is necessary to ensure that the connection is firm and the coaxiality between the screw and the limit hole is good.

[0068] Preferably, please refer to Figure 15 and Figure 16 As shown, the third adjustment component is disposed at the bottom of the second extension portion 330 and is symmetrically arranged with the second adjustment component. The third adjustment component includes a second screw 220. The second screw 220 penetrates through the housing 100 and the main body 200 and is connected to a second limit hole 332 at the bottom of the second extension portion 330. The third adjustment component is used to adjust the rotation angle of the crystal cassette 300 around the y-axis. Specifically, please refer toFigure 16 As shown, the crystal cassette 300 rotates about the y-axis and rotates about the generatrix of the variable-cone surface bent crystal; the third adjustment assembly realizes the adjustment of the rotation angle of the crystal cassette 300 about the y-axis through the second screw rods 220 symmetrically arranged at the bottom of the second extension 330. The second screw rods 220 also penetrate through the housing 100 and the main body 200, and through holes adapted to the second screw rods 220 are machined at corresponding positions of the housing 100 and the main body 200 to ensure that the second screw rods 220 can pass through smoothly and are not interfered during rotation. The second screw rods 220 are connected to the second limit holes 332 at the bottom of the second extension 330. These limit holes not only play a connecting role but also limit the unintended movement of the crystal cassette 300 in other directions, making the crystal cassette 300 rotate only about the y-axis. When the second screw rods 220 are rotated, due to the special connection structure between the second screw rods 220 and the second limit holes 332 and the relative position relationship between the crystal cassette 300 and the main body 200, the crystal cassette 300 will rotate about the y-axis. In practical applications, by precisely controlling the rotation amount of the second screw rods 220, the rotation angle of the crystal cassette 300 about the y-axis can be accurately adjusted. At the same time, the rotation of the crystal cassette 300 about the y-axis is closely related to the rotation about the generatrix of the variable-cone surface bent crystal. The generatrix of the variable-cone surface bent crystal is its geometric characteristic line. When the crystal cassette rotates about the y-axis, the rotation angle of the variable-cone surface bent crystal about the generatrix changes synchronously, thereby adjusting the Bragg angle of the incident light beam. This compound rotational motion can further enrich the diffraction adjustment ability of the variable-cone surface bent crystal for the laser beam. For example, in some complex laser imaging scenarios, it is necessary to precisely control the rotation angle of the variable-cone surface bent crystal about the generatrix to optimize the diffraction effect. By adjusting the second screw rods 220 in the third adjustment assembly, precise control of this compound rotational motion can be achieved, thus meeting the requirements for adjusting the crystal attitude under different imaging needs.

[0069] Preferably, the fourth adjustment component is provided at the bottom of the first extension portion 320. The fourth adjustment component includes a third screw rod 230, which penetrates through the housing 100 and the main body 200 and is connected to a third limit hole 321 at the bottom of the first extension portion 320. The fourth adjustment component is used to adjust the pitch angle of the crystal box 300 around the x-axis. Specifically, the fourth adjustment component realizes the adjustment of the pitch angle of the crystal box 300 around the x-axis through the third screw rod 230 provided at the bottom of the first extension portion 320. The third screw rod 230 penetrates through the housing 100 and the main body 200, and through holes adapted to the third screw rod 230 are machined at corresponding positions of the housing 100 and the main body 200 to ensure that the screw rod can rotate freely and is not interfered during the adjustment process. The third screw rod 230 is connected to the third limit hole 321 at the bottom of the first extension portion 320. The third limit hole 321 not only realizes the connection between the screw rod and the crystal box 300, but more importantly, limits the undesired displacement of the crystal box 300 in other directions except for rotation around the x-axis, so that the crystal box 300 can only perform pitch motion around the x-axis. When the third screw rod 230 is rotated, due to the connection between the third screw rod 230 and the third limit hole 321 and the relative position relationship between the crystal box 300 and the main body 200, the crystal box 300 will perform pitch rotation around the x-axis. In actual operation, the operator can accurately adjust the pitch angle of the crystal box 300 around the x-axis by precisely controlling the rotation amount of the third screw rod 230. During the laser imaging process, the pitch angle of the variable cone surface bent crystal has a direct impact on the angle between the laser beam and the crystal surface, and thus determines the propagation direction and intensity distribution of the diffraction signal. By precisely adjusting the pitch angle of the crystal box 300 around the x-axis, the diffraction signal can be propagated at a better angle, so as to be better focused on the imaging device and improve the clarity and quality of the imaging. It should be noted that in complex laser imaging scenarios, different imaging requirements may require different crystal attitude combinations, which requires the fourth adjustment component to cooperate closely with other adjustment components. By precisely adjusting their respective parameters, the all-round and multi-dimensional attitude control of the variable cone surface bent crystal can be realized to meet the strict requirements for the crystal position and angle under various imaging conditions. In this embodiment, by providing the fourth adjustment component based on the third screw rod 230 at the bottom of the first extension portion 320 of the crystal box 300, the pitch attitude of the variable cone surface bent crystal relative to the light beam can be accurately adjusted. The synergistic effect of the fourth adjustment component and other adjustment components further enriches the attitude adjustment dimension of the variable cone surface bent crystal in space and can meet the strict requirements for the crystal attitude under complex and diverse laser imaging scenarios.

[0070] Preferably, the connection component includes a first limiting component 400, and the first limiting component 400 includes a column 410, a first spring 420 and a first sleeve 430; the first sleeve 430 is sleeved on the column 410, one end of the column 410 is connected to a fourth limiting hole 340 in the middle of the crystal box 300 through a ball head, the other end of the column 410 is connected to the inner wall of the first sleeve 430 through the first spring 420, and the first sleeve 430 is embedded in a first through hole 240 at the top of the main body 200 and fixed through a second through hole 250 at the bottom of the main body 200; specifically, the first limiting component 400 is used to provide connection and buffering engineering. The core of the first limiting component 400 is to realize the connection and buffering functions between the crystal box 300 and the main body 200 through the coordinated work of the column 410, the first spring 420 and the first sleeve 430. One end of the column 410 is connected to the fourth limiting hole 340 in the middle of the crystal box 300 through a ball head. The ball head allows the crystal box 300 to rotate freely within a certain range, providing the possibility of flexible angle change during the multi-dimensional adjustment of the crystal box 300. For example, when the third adjustment component or the fourth adjustment component works, the crystal box 300 can conform to the rotation and pitching movements to a certain extent based on the ball head connection. The other end of the column 410 is connected to the inner wall of the first sleeve 430 through the first spring 420, constructing a buffering mechanism. When the mechanism is subjected to vibration or external force impact during the adjustment process, the first spring 420 can undergo elastic deformation to absorb and buffer these external forces. The first sleeve 430 plays a role in supporting and positioning the column 410 in the through hole of the main body 200, enabling the column 410 to maintain a stable position during operation, thereby ensuring the reliability of the connection between the crystal box 300 and the main body 200. The first limiting component 400 cooperates with the multi-dimensional adjustment component to jointly realize the precise adjustment of the variable-conical surface bent crystal. In this embodiment, by setting the first limiting component 400 in the connection component, a stable and flexible connection method between the crystal box 300 and the main body 200 is realized. The ball head connection endows the crystal box 300 with the necessary rotational freedom during the multi-dimensional adjustment process, that is, the ball head connection provides passive freedom around the z-axis, enabling it to better conform to the adjustment of the rotation angle and pitching angle by the third and fourth adjustment components, ensuring that the variable-conical surface bent crystal can be precisely adjusted to the required posture. The buffering mechanism of the first spring 420 effectively absorbs and offsets the vibration and external force impact that the mechanism may receive during the adjustment and operation process, protecting the crystal box 300 and the variable-conical surface bent crystal, avoiding position deviation or damage caused by vibration, and ensuring the stability of the imaging quality.

[0071] Preferably, the connecting component further includes a plurality of second limiting components 500 disposed between the main body 200 and the crystal box 300. The plurality of second limiting components 500 include a second sleeve 510 and a second spring 520. One end of the second spring 520 is connected to the fifth limiting hole 350 on the crystal box 300, and the other end of the second spring 520 is connected to the sixth limiting hole 260 on the main body 200. The second sleeve 510 is disposed between the main body 200 and the crystal box 300 and the second sleeve 510 is disposed outside the second spring 520. Specifically, the spring tension structure provided by the second limiting component 500 not only acts as a damping for each adjusting component, but also provides a fixing effect for the adjusted state. The second limiting component 500 is preferably 4 groups, and the 4 groups of second limiting components 500 are spaced apart between the main body 200 and the crystal box 300. The second spring 520 causes an elastic tension between the crystal box 300 and the main body 200. When each adjusting component adjusts the crystal box 300, the tension generated by the second spring 520 will form a damping force. For example, when the first adjusting component adjusts the horizontal displacement of the crystal box 300, the tension of the second spring 520 will generate a certain resistance to the movement of the crystal box 300. This damping force does not hinder the adjustment, but makes the adjustment process smoother. At the same time, when the adjustment is completed and the desired attitude of the crystal box 300 is reached, the tension of the second spring 520 can provide a fixing effect for the adjusted state, which can maintain the crystal box 300 at the current position and prevent the crystal box 300 from undergoing unexpected position changes due to vibration or other minor external force disturbances. The second sleeve 510 is disposed outside the second spring 520, mainly playing a role of protection and guiding. The second sleeve 510 can prevent the second spring 520 from being collided or interfered by external objects during the working process, ensuring the normal operation of the spring. At the same time, the second sleeve 510 can also guide the telescopic direction of the second spring 520, enabling the spring to generate tension along a predetermined direction, enhancing the stability of the damping and fixing effects.

[0072] In this embodiment, it is preferably to set 4 groups of second limiting components 500. This distribution method can provide balanced damping and fixing effects for the crystal box 300 in all directions. When adjusting the rotation angle of the crystal box 300 around the y-axis, the second springs 520 in the 4 groups of second limiting components 500 located at different positions will act together to provide a damping force in the rotation direction, making the rotation adjustment smoother. Similarly, when adjusting the pitch angle of the crystal box 300 around the x-axis, the height adjustment and the horizontal displacement adjustment, the 4 groups of second limiting components 500 can work together from different directions to ensure good damping effects during the adjustment process in all dimensions, and can fix the position of the crystal box 300 in all directions after the adjustment is completed, ensuring the attitude stability of the variable conical surface bent crystal in space.

[0073] Preferably, the adjustment mechanism further includes a reference positioning component, which includes a pull-ring pin 600 and a positioning hole 610. When the pull-ring pin 600 is inserted into the positioning hole 610 on the housing 100, the initial zero position of the crystal cassette 300 is locked. After the pull-ring pin 600 is pulled out, the adjustment freedom is maintained by the second limiting component 500. Specifically, the pre-tightening force of the second spring 520 is optimized through mechanical simulation to ensure the adjustment resistance and provide a stable reset force at the same time. The reference positioning component constructs an initial zero-position locking mechanism through the pull-ring pin 600 and the positioning hole 610. The positioning hole 610 is accurately set on the housing 100, and its position corresponds to a specific position when the crystal cassette 300 is in the initial zero position. The pull-ring pin 600 is configured to be able to be tightly inserted into the positioning hole 610. When the pull-ring pin 600 is inserted into the positioning hole 610, it restricts the movement of the main body 200 and the connected crystal cassette 300 in all directions, thereby locking the crystal cassette 300 in the initial zero position. The initial zero position is an important reference state, ensuring that the variable-conical surface bent crystal is in a known and stable position before the start of adjustment, which helps to improve the accuracy and repeatability of subsequent adjustments. When multi-dimensional adjustment of the crystal cassette 300 is required, the operator pulls the pull ring to pull the pull-ring pin 600 out of the positioning hole 610. At this time, the crystal cassette 300 is freed from the restriction of the pin and the adjustment freedom is restored. Through the reference positioning component, before each experiment or imaging task starts, the crystal cassette 300 can be accurately reset to the initial zero position, improving the accuracy and repeatability of the adjustment process, reducing the error accumulation caused by the uncertain initial position, and helping to improve the accuracy and reliability of laser imaging.

[0074] Please refer to Figure 17 , which shows the method flow chart of the multi-dimensional adjustment method of the variable-conical surface bent crystal provided by an embodiment of the present invention. Using the multi-dimensional adjustment mechanism of the variable-conical surface bent crystal in the above embodiment of the present invention, the method includes:

[0075] Step S100: Install the variable-conical surface bent crystal in the first cavity 310 of the crystal cassette 300;

[0076] Step S200: Use a visible light source to irradiate the variable-conical surface bent crystal to generate a focusing line on the imaging plate. Specifically, on the optical platform, a high-intensity white light source, a variable-conical surface bent crystal, an imaging plate, and a monitoring CCD camera are sequentially placed along the optical path direction. The high-intensity white light source uses a special diaphragm at the fiber output end, preferably a tantalum sheet with a diameter of 10 mm, a thickness of 50 μm, and an 80 μm small hole in the middle, to form a white light source with a diameter of 80 μm. After this divergent light source irradiates the surface of the variable-conical surface bent crystal, due to the special optical properties of the variable-conical surface bent crystal, the light diffracts and converges, and finally a focusing line is formed on the imaging plate. This focusing line is an important basis for subsequent adjustments, and its shape reflects the adjustment effect of the variable-conical surface bent crystal on the light.

[0077] Step S300: Based on the image acquisition device, the morphology of the focusing line on the imaging plate is monitored in real time, and the horizontal displacement of the variable-cone surface bent crystal is adjusted by using the first adjustment component; specifically, in this embodiment, a CCD camera is preferably used to monitor the morphology of the focusing line on the imaging plate, and the horizontal displacement of the variable-cone surface bent crystal is adjusted by using the first adjustment component. The first adjustment component is composed of a double-screw drive mechanism arranged along the x-axis and y-axis directions. In the x-direction, the two screws achieve overall movement in the way of "one loose and one tight", and the same is true in the y-direction. When the CCD camera monitors that the focusing line deviates from the ideal position in the horizontal direction, the operator rotates the corresponding differential screw to change the horizontal position of the main body 200, thereby driving the crystal box 300 and the variable-cone surface bent crystal to move in the horizontal direction. This adjustment method can accurately adjust the position of the variable-cone surface bent crystal in the two-dimensional plane, make the focusing line gradually approach the preset position in the horizontal direction, optimize the relative position relationship between the light and the variable-cone surface bent crystal, and lay a foundation for further adjusting other dimensions subsequently.

[0078] Step S400: The height, rotation angle and pitch angle of the variable-cone surface bent crystal are respectively adjusted by using the second adjustment component, the third adjustment component and the fourth adjustment component until the focusing line reaches the preset state. The height, rotation angle and pitch angle of the variable-cone surface bent crystal are respectively adjusted by using the second adjustment component, the third adjustment component and the fourth adjustment component until the focusing line reaches the preset state; specifically, the second adjustment component realizes the overall movement in the z-direction through the cooperation of the height adjustment screw and the ball head top column. The driving screw is provided with a differential scale, which can divide 0.5 mm into 50 equal parts to achieve a movement accuracy of 0.01 mm. When the CCD camera monitors that the position of the focusing line in the vertical direction is not ideal, by rotating the height adjustment screw, the height of the crystal box 300 is changed, so as to adjust the vertical distance between the variable-cone surface bent crystal and the light, and optimize the focusing effect. The third adjustment component is realized by the crystal rotation adjustment screw Figure 15 in the θ direction, that is, the adjustment around the y-axis. When the rotation angle of the focusing line does not meet the requirements, rotate this screw to make the crystal box 300 rotate around the y-axis, change the rotation angle of the variable-cone surface bent crystal, and adjust the incident angle of the light on the crystal surface to further optimize the diffraction and focusing effects. The fourth adjustment component is realized by the crystal pitch adjustment screw Figure 15 in the φ direction, that is, the adjustment around the x-axis. When the pitch angle of the focusing line is not appropriate, rotate this screw to make the crystal box 300 pitch around the x-axis, change the pitch angle of the variable-cone surface bent crystal, make the light irradiate the crystal at a more appropriate angle, and make the focusing line reach the preset thinnest state to complete the optical path calibration.

[0079] The method further includes: before the adjustment starts, inserting the pull-ring pin 600 into the positioning hole 610 on the housing 100 to lock the initial zero position of the crystal cassette 300. When adjustment is needed, pull out the pull-ring pin 600, and the crystal cassette 300 obtains the adjustment freedom, and each adjustment component starts to work. During the adjustment process, multiple sets of second limiting components 500 provide damping force for the adjustment of the crystal cassette 300 in each dimension through the elastic tension of the second spring 520, making the adjustment process smoother, and at the same time fixing the position of the crystal cassette 300 after the adjustment is completed to ensure the accuracy and stability of the adjustment.

[0080] The variable conical surface bent crystal multi-dimensional adjustment method provided by this embodiment utilizes a specific variable conical surface bent crystal multi-dimensional adjustment mechanism, monitors the morphology of the focusing line in real time based on an image acquisition device, and uses multi-dimensional adjustment components for precise adjustment, and can optimize the adjustment of the variable conical surface bent crystal in multiple dimensions such as horizontal displacement, height, rotation angle and pitch angle. This multi-dimensional precise adjustment enables the variable conical surface bent crystal to diffract and converge light in the best posture, making the focusing line on the imaging plate reach the preset thinnest state, and improving the resolution of laser imaging.

[0081] Please refer to Figure 18 , which shows a schematic structural diagram of a variable conical surface bent crystal optical path calibration system provided by an embodiment of the present invention. Using the variable conical surface bent crystal multi-dimensional adjustment mechanism in the above embodiment of the present invention, the system includes:

[0082] A white light source module for providing a white light source with a spot size not greater than 80 microns; in actual use, usually a high-intensity visible light generator is used as the basic light source. At its fiber output end, a specially designed aperture is installed, such as a tantalum sheet with a diameter of 10 mm, a thickness of 50 μm and an 80 μm small hole in the middle. This aperture can limit and screen the light emitted by the light source, and only allow the light with a central part diameter not greater than 80 microns to pass through, thereby forming a small-size white light source that meets the requirements.

[0083] A variable conical surface bent crystal is installed in the first cavity 310 of the crystal cassette 300 of the variable conical surface bent crystal multi-dimensional adjustment mechanism, and is used to diffract the incident white light source of the white light source irradiation module into a focusing line; the multi-dimensional adjustment mechanism plays a key adjustment role. Through the first adjustment component, the position of the variable conical surface bent crystal in the horizontal direction can be precisely adjusted, the incident angle of the light with the crystal can be changed, and the diffraction effect can be optimized; the second adjustment component can adjust the height of the variable conical surface bent crystal, change the vertical distance between the light and the crystal, and further affect the focusing effect; the third adjustment component is used to adjust the rotation angle of the variable conical surface bent crystal around the y-axis, change the incident angle of the light on the crystal surface, and make the direction of the diffracted light more accurate; the fourth adjustment component can adjust the pitch angle of the variable conical surface bent crystal around the x-axis, and also has an impact on the incident and diffracted directions of the light. Through these multi-dimensional adjustments, the focusing line reaches the best state;

[0084] An imaging plate for recording the focusing line of conical-curved crystal diffraction.

[0085] An image acquisition device for obtaining the position information of the focusing line. The image acquisition device is preferably a CCD camera. By acquiring the image of the focusing line on the imaging plate, the position information of the focusing line is obtained. The CCD camera has the characteristics of high resolution and real-time imaging, and can quickly and accurately capture the position change of the focusing line. By analyzing the acquired image, it can be judged whether the focusing line is in an ideal state, such as whether the focusing line is the thinnest and whether it is located at the center position of the imaging plate. Based on this information, the operator can adjust the conical-curved crystal accordingly through the multi-dimensional adjustment mechanism to achieve precise adjustment of the optical path.

[0086] In summary, the multi-dimensional adjustment mechanism of the conical-curved crystal provided by the present invention mounts the conical-curved crystal in the crystal box. Through the first adjustment component, the second adjustment component, the third adjustment component, and the fourth adjustment component of the multi-dimensional adjustment component, the horizontal displacement, height, rotation angle, and pitch angle of the conical-curved crystal can be adjusted synchronously in multiple dimensions to achieve high-precision focusing of the diffraction signal of the conical-curved crystal and avoid the cumulative error of traditional step-by-step adjustment; quickly realize the imaging attitude adjustment of the conical-curved crystal. On the other hand, based on the multi-dimensional adjustment mechanism of the conical-curved crystal, the multi-dimensional adjustment method and the optical path adjustment system of the conical-curved crystal provided by the present invention can realize a small-size white light source with a large divergence angle. The focusing line generated by the small light spot on the imaging plate is convenient for the CCD camera to accurately capture the optical path deviation and provides a clear reference for sub-micron-level adjustment; the large divergence angle enhances the optical path fault tolerance in a non-vacuum environment. Even if there is a small angular deviation on the crystal surface, the crystal surface can still be covered by the divergent beam to ensure the continuity of the diffraction signal. The present invention takes into account both high-precision positioning and complex environment adaptability, and provides a reliable light source basis and multi-dimensional adjustment means for high-resolution X-ray diagnosis and laser imaging experiments.

[0087] It should be noted that the above sequence of the embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired result. In some embodiments, multi-tasking and parallel processing are also possible or may be advantageous.

[0088] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

Claims

1. Variable taper surface bent crystal multi-dimensional adjustment mechanism, characterized in that It includes a housing, a main body, a crystal box and a multi-dimensional adjustment component; The main body is embedded in the housing and is movably connected to the housing. A second cavity for accommodating the main body is provided in the middle of the housing. The whole part of the main body can be embedded in the second cavity, and the main body can slide forward, backward, left and right relative to the second cavity; The crystal box is installed on the top of the main body through a connection component; the crystal box includes an integrally formed first cavity, a first extension part and a second extension part; The multi-dimensional adjustment component includes: A first adjustment component, which is arranged on the housing and is used to adjust the horizontal displacement of the main body. The first adjustment component includes a first double-screw drive mechanism and a second double-screw drive mechanism that are detachably connected to the housing; the first double-screw drive mechanism is arranged along the x-axis direction and is used to adjust the two-way translation of the crystal box along the x-axis; the second double-screw drive mechanism is arranged along the y-axis direction and is used to adjust the two-way translation of the crystal box along the y-axis; A second adjustment component, which is arranged on the main body and is used to adjust the height of the crystal box. The second adjustment component is arranged at the bottom of the second extension part. The second adjustment component includes a first screw rod. The first screw rod penetrates through the housing and the main body and is connected to the first limit hole at the bottom of the second extension part. The second adjustment component is used to adjust the vertical displacement of the crystal box along the z-axis; A third adjustment component, which is arranged on the main body and is used to adjust the rotation angle of the crystal box. The third adjustment component is arranged at the bottom of the second extension part and is symmetrically arranged with the second adjustment component. The third adjustment component includes a second screw rod. The second screw rod penetrates through the housing and the main body and is connected to the second limit hole at the bottom of the second extension part. The third adjustment component is used to adjust the rotation angle of the crystal box around the y-axis; A fourth adjustment component, which is arranged on the main body and is used to adjust the pitch angle of the crystal box. The fourth adjustment component is arranged at the bottom of the first extension part. The fourth adjustment component includes a third screw rod. The third screw rod penetrates through the housing and the main body and is connected to the third limit hole at the bottom of the first extension part. The fourth adjustment component is used to adjust the pitch angle of the crystal box around the x-axis.

2. The variable conical surface bent crystal multi-dimensional adjustment mechanism according to claim 1, wherein, The connection component includes a first limit component. The first limit component includes a column, a first spring and a first sleeve; the first sleeve is sleeved on the column. One end of the column is connected to the fourth limit hole in the middle of the crystal box through a ball head. The other end of the column is connected to the inner wall of the first sleeve through the first spring. The first sleeve is embedded in the first through hole at the top of the main body and is fixed through the second through hole at the bottom of the main body.

3. The variable conical surface bent crystal multi-dimensional adjustment mechanism according to any one of claims 1 to 2, characterized in that, The connection component further includes multiple groups of second limit components arranged between the main body and the crystal box. The multiple groups of second limit components include second sleeves and second springs; one end of the second spring is connected to the fifth limit hole on the crystal box, and the other end of the second spring is connected to the sixth limit hole on the main body. The second sleeve is arranged between the main body and the crystal box and the second sleeve is arranged outside the second spring.

4. The variable conical surface bent crystal multi-dimensional adjustment mechanism according to claim 3, characterized in that, The adjustment mechanism further includes a reference positioning component. The reference positioning component includes a pull-ring pin and a positioning hole. When the pull-ring pin is inserted into the positioning hole on the housing, the initial zero position of the crystal box is locked; after the pull-ring pin is pulled out, the adjustment freedom is maintained through the second limit component.

5. Method for multi-dimensional adjustment of variable conical surface bent crystal, characterized in that, Using the variable conical surface bent crystal multi-dimensional adjustment mechanism according to any one of claims 1 to 4, the method includes: Installing the variable conical surface bent crystal in the first cavity of the crystal box; Irradiating the variable conical surface bent crystal with a visible light source to generate a focusing line on the imaging plate; Based on the image acquisition device, monitoring the shape of the focusing line on the imaging plate in real time, and adjusting the horizontal displacement of the variable conical surface bent crystal by using the first adjustment component; Using the second adjustment component, the third adjustment component, and the fourth adjustment component to adjust the height, rotation angle, and pitch angle of the variable conical surface bent crystal respectively until the focusing line reaches a preset state.

6. Variable conical crystal optical path calibration system, characterized in that Using the variable conical surface bent crystal multi-dimensional adjustment mechanism according to any one of claims 1 to 4, the system includes: A white light source module for providing a white light source with a spot size not greater than 80 microns; A variable conical surface bent crystal installed in the first cavity of the crystal box of the variable conical surface bent crystal multi-dimensional adjustment mechanism for diffracting the incident white light source of the white light source irradiation module into a focusing line; An imaging plate for recording the focusing line diffracted by the variable conical surface bent crystal; An image acquisition device for obtaining the position information of the focusing line.

Images