Variable-conical-surface bent crystal multi-dimensional adjusting mechanism and method and variable-conical-surface bent crystal light path adjusting system

Abstract

The invention relates to the technical field of laser imaging, in particular to a variable-conical-surface bent crystal multi-dimensional adjusting mechanism and method and a variable-conical-surface bent crystal light path adjusting system, and the variable-conical-surface bent crystal multi-dimensional adjusting mechanism comprises a shell, a main body, a crystal box and a multi-dimensional adjusting assembly; the main body is embedded in the shell and is movably connected with the shell; the crystal box is mounted at the top of the main body through the connecting assembly; the crystal box comprises a first cavity, a first extension part and a second extension part which are integrally formed; the multi-dimensional adjusting assembly comprises a first adjusting assembly which is arranged on the shell and is used for adjusting the horizontal displacement of the main body; the second adjusting assembly is arranged on the main body and is used for adjusting the height of the crystal box; the third adjusting assembly is arranged on the main body and is used for adjusting the rotation angle of the crystal box; and the fourth adjusting assembly is arranged on the main body and is used for adjusting the pitch angle of the crystal box. The objective of the invention is to realize multi-dimensional high-precision adjustment of the variable-conical-surface bent crystal.

Description

Technical Field

[0001] The present invention relates to the field of laser imaging technology, and in particular to a variable cone surface curved crystal multi-dimensional adjustment mechanism and method and a variable cone surface curved crystal optical path adjustment system. Background Art

[0002] As the core optical element of X-ray spectral diagnosis, the variable cone curved crystal can compress and focus the divergent X-ray spectrum in the spatial dimension through its unique gradient curvature surface structure, forming a line focusing 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 and curvature radius of the curved generatrix of the variable cone curved crystal show continuous spatial changes, its spatial posture calibration must simultaneously meet the three mutually coupled degrees of freedom control of Bragg diffraction angle matching, crystal plane normal orientation alignment, and focal plane conjugate distance adjustment, and the adjustment accuracy of each dimension must reach sub-millimeter translation and milliradian angular resolution. Therefore, it is necessary to complete the precise pre-calibration of the optical path parameters and mechanical state locking in the laboratory stage.

[0003] The existing laboratory calibration of variable cone curved crystals usually adopts an adjustment scheme of steel ruler combined with stacked translation stages: the scheme first uses a mechanical steel ruler to roughly locate the spatial position of the crystal, and then uses three-stage 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 realize the macroscopic position calibration of the crystal, and it can neither quantitatively detect the rotational freedom around the curved surface generatrix, nor accurately control the spatial angle between the normal direction of the Bragg diffraction surface and the incident X-ray beam, resulting in a large error in the calibration of the crystal azimuth. Second, although the stacked translation stage architecture can provide basic three-axis translation function, there are errors such as mechanical backlash and platform deflection angle between the motion pairs of each axis; the above defects make it difficult for traditional adjustment schemes to achieve multi-dimensional high-precision adjustment of variable cone curved crystals when facing the high-precision spatial positioning and complex posture coordinated control requirements required for high-energy physics experiments, thereby restricting the accuracy and reliability of X-ray spectral diagnosis. Summary of the invention

[0004] In order to achieve multi-dimensional high-precision adjustment of variable cone surface curved crystals, the present invention provides a multi-dimensional adjustment mechanism and method for variable cone surface curved crystals and a variable cone surface curved crystal optical path adjustment system. The technical solutions adopted are as follows: The technical solution of the first aspect of the present invention provides a variable cone surface curved crystal multi-dimensional adjustment mechanism, including a shell, a main body, a crystal box and a multi-dimensional adjustment component; The main body is embedded in the shell and movably connected to the shell; The crystal box is installed on the top of the main body through a connecting assembly; the crystal box includes an integrally formed first cavity, a first extension portion and a second extension portion; The multi-dimensional adjustment component includes: A first adjustment component, provided on the housing, for adjusting the horizontal displacement of the main body; A second adjustment component, provided on the main body, for adjusting the height of the crystal box; A third adjustment component is provided on the main body and is used to adjust the rotation angle of the crystal box; The fourth adjustment component is arranged on the main body and is used for adjusting the pitch angle of the crystal box.

[0005] Furthermore, the first adjustment component includes a first twin-screw drive mechanism and a second twin-screw drive mechanism which are detachably connected to the shell; the first twin-screw drive mechanism is arranged along the x-axis direction for adjusting the bidirectional translation of the crystal box along the x-axis; the second twin-screw drive mechanism is arranged along the y-axis direction for adjusting the bidirectional translation of the crystal box along the y-axis.

[0006] Furthermore, the second adjustment component is arranged at the bottom of the second extension part, and the second adjustment component includes a first screw rod, which passes through the shell and the main body and is connected to the first limiting 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.

[0007] Furthermore, the third adjustment component is arranged at the bottom of the second extension part and is symmetrically arranged between the second adjustment component. The third adjustment component includes a second screw, which passes through the shell and the main body and is connected to the second limiting 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.

[0008] Furthermore, the fourth adjustment component is arranged at the bottom of the first extension part, and the fourth adjustment component includes a third screw, which passes through the shell and the main body and is connected to the third limiting 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.

[0009] Furthermore, the connecting component includes a first limiting component, which 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 limiting 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, and the first sleeve is embedded in the first through hole at the top of the main body and fixed through the second through hole at the bottom of the main body.

[0010] Furthermore, the connecting component also includes multiple groups of second limiting components arranged between the main body and the crystal box, and the multiple groups of second limiting components include a second sleeve and a second spring; one end of the second spring is connected to the fifth limiting hole on the crystal box, and the other end of the second spring is connected to the sixth limiting hole on the main body, and the second sleeve is arranged between the main body and the crystal box and the second sleeve is arranged outside the second spring.

[0011] Furthermore, the adjustment mechanism also includes a reference positioning component, which includes a pull ring pin and a positioning hole. When the pull ring pin is inserted into the positioning hole on the shell, the initial zero position of the crystal box is locked; after the pull ring pin is pulled out, the adjustment freedom is maintained by a second limit assembly.

[0012] The technical solution of the second aspect of the present invention provides a method for adjusting a multi-dimensionally curved crystal with a variable cone surface, using the multi-dimensionally curved crystal adjustment mechanism with a variable cone surface as described in the technical solution of the first aspect of the present invention, and the method comprises: Installing the variable cone curved crystal in the first cavity of the crystal box; The variable cone-shaped curved crystal is illuminated by a visible light source to generate a focal line on the imaging plate; Based on the image acquisition device, the shape of the focus line on the imaging plate is monitored in real time, and the horizontal displacement of the variable cone surface bent crystal is adjusted by the first adjustment component; The second adjustment component, the third adjustment component and the fourth adjustment component are used to respectively adjust the height, the rotation angle and the pitch angle of the variable cone curved crystal until the focal line reaches a preset state.

[0013] The technical solution of the third aspect of the present invention provides a variable cone surface curved crystal optical path adjustment system, which adopts the variable cone surface curved crystal multi-dimensional adjustment mechanism of the technical solution of the first aspect of the present invention, and the system comprises: A white light source module, used to provide a white light source with a spot size not greater than 80 microns; A variable cone curved crystal is installed in the first cavity of the crystal box of the variable cone curved crystal multi-dimensional adjustment mechanism, and is used to diffract the incident white light source of the white light source illumination module into a focal line; An imaging plate for recording the focus line of the diffraction of the variable cone-shaped curved crystal; The image acquisition device is used to obtain the position information of the focal line.

[0014] The present invention has the following beneficial effects: The variable cone surface curved crystal multi-dimensional adjustment mechanism provided by the present invention installs the variable cone surface curved crystal in a crystal box, and can synchronously adjust the horizontal displacement, height, rotation angle and pitch angle of the variable cone surface curved crystal through the first adjustment component, the second adjustment component, the third adjustment component and the fourth adjustment component of the multi-dimensional adjustment component, so as to achieve high-precision focusing of the diffraction signal of the variable cone surface curved crystal and avoid the cumulative error of the traditional step-by-step adjustment; and quickly realize the imaging posture adjustment of the variable cone surface curved crystal. On the other hand, based on the variable cone surface bent crystal multi-dimensional adjustment mechanism, the variable cone surface bent crystal multi-dimensional adjustment method and variable cone surface bent crystal optical path adjustment system provided by the present invention can realize a small-sized white light source with a large divergence. 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, providing a clear reference for submicron adjustment; the large divergence angle enhances the optical path tolerance in a non-vacuum environment, and 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 adaptability to complex environments, and provides a reliable light source foundation and multi-dimensional adjustment means for high-resolution X-ray diagnosis and laser imaging experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the overall structure of a variable cone-surface crystal bending multi-dimensional adjustment mechanism provided by an embodiment of the present invention; Figure 2 A front view of a variable cone-surface curved crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention; Figure 3 A top view of a variable cone-surface crystal bending multi-dimensional adjustment mechanism provided by an embodiment of the present invention; Figure 4 A bottom view of a variable cone-surface curved crystal multi-dimensional adjustment mechanism provided by one embodiment of the present invention; Figure 5 A side view of a variable cone-surface curved crystal multi-dimensional adjustment mechanism provided by an embodiment of the present invention; Figure 6 A partial structural schematic diagram of a variable cone-surface crystal bending multi-dimensional adjustment mechanism provided by an embodiment of the present invention; Figure 7 A schematic diagram of the internal structure of a variable cone-surface crystal bending multi-dimensional adjustment mechanism provided by an embodiment of the present invention; Figure 8A schematic diagram of the structure of a housing provided by an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a main body provided by an embodiment of the present invention; Fig.10 A schematic diagram of the top structure of a crystal box provided by one embodiment of the present invention; Fig.11 A schematic diagram of the bottom structure of a crystal box provided by one embodiment of the present invention; Fig.12 A schematic diagram of the structure of a second adjustment component provided by an embodiment of the present invention; Fig.13 A schematic diagram of the overall structure of a first limiting assembly provided by an embodiment of the present invention; Fig.14 A partial structural schematic diagram of a first limiting assembly provided in one embodiment of the present invention; Fig.15 A schematic diagram of the coordinate adjustment direction of a tapered curved crystal provided by an embodiment of the present invention; Fig.16 A schematic diagram of a generatrix of a tapered crystal provided by an embodiment of the present invention; Fig.17 A method flow chart of a method for adjusting a multi-dimensional tapered crystal provided by an embodiment of the present invention; Fig.18 A schematic diagram of the structure of a variable cone curved crystal optical path adjustment system provided by an embodiment of the present invention; Icon: 100-shell, 110-first double-screw drive mechanism, 120-second double-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 limiting hole, 300-crystal box, 310-first cavity, 320-first extension part, 321-third limiting hole, 330-second extension part, 331-first limiting hole, 332-second limiting hole, 340-fourth limiting hole, 350-fifth limiting hole, 400-first limiting assembly, 410-column, 420-first spring, 430-first sleeve, 500-second limiting assembly, 510-second sleeve, 520-second spring, 600-pin with pull ring, 610-positioning hole. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, describes in detail the specific implementation method, structure, features and effects of a variable cone surface curved crystal multi-dimensional adjustment mechanism, method and variable cone surface curved crystal optical path adjustment system proposed by the present invention. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0018] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0019] The specific scheme of a variable cone surface bent crystal multi-dimensional adjustment mechanism, method and variable cone surface bent crystal optical path adjustment system provided by the present invention is described in detail below in conjunction with the accompanying drawings.

[0020] See also Figures 1 to 14 As shown, it shows a schematic structural diagram of a variable cone surface curved crystal multi-dimensional adjustment mechanism provided by the present invention, wherein the variable cone surface curved crystal multi-dimensional adjustment mechanism comprises a housing 100, a main body 200, a crystal box 300 and a multi-dimensional adjustment component; The main body 200 is embedded in the housing 100 and movably connected to the housing 100; The crystal box 300 is installed on the top of the main body 200 through a connecting assembly; the crystal box 300 includes an integrally formed first cavity 310, a first extension portion 320 and a second extension portion 330; The multi-dimensional adjustment component includes: The first adjustment component is provided 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 cone curved crystal in a two-dimensional plane to meet the precise requirements of the crystal position during the laser imaging process; The second adjustment component is provided on the main body 200 and is used to adjust the height of the crystal box 300. The height position of the variable cone curved crystal has an important influence on its diffraction effect and imaging quality. By adjusting the height of the crystal box 300 by the second adjustment component, the relative position of the variable cone curved crystal and the incident light beam can be optimized, so that the diffraction signal can be better focused; A third adjustment component, provided on the main body 200, for adjusting the rotation angle of the crystal box 300; The fourth adjustment component is disposed on the main body 200 and is used to adjust the pitch angle of the crystal box 300 .

[0021] Specifically, see Figure 8As shown, the middle of the housing 100 is provided with a second cavity for accommodating the main body 200, and the main body 200 is movably installed in the second cavity, and ensures that the main body 200 can move flexibly and stably in the second cavity; the sides of the housing 100 are respectively provided with mounting holes for installing the first adjustment component; see Figure 3 As shown, the entire body 200 can be embedded in the second cavity, and the body 200 can slide forward, backward, left, and right relative to the second cavity; the corresponding mounting structure needs to be processed on the body 200 according to the second, third, and fourth adjustment components and the connecting components. Figure 4 As shown, the first cavity 310 on the crystal box 300 is used to install the variable cone curved crystal. The internal size and shape of the first cavity 310 are precisely matched with the variable cone curved crystal to ensure that the variable cone curved crystal is firmly installed and accurately positioned.

[0022] The variable cone surface curved crystal multi-dimensional adjustment mechanism provided in the present embodiment installs the variable cone surface curved 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 cone surface curved crystal can be adjusted synchronously to achieve high-precision focusing of the diffraction signal of the variable cone surface curved crystal and quickly realize the imaging posture adjustment of the variable cone surface curved crystal.

[0023] Preferably, the first adjustment component includes a first twin-screw drive mechanism 110 and a second twin-screw drive mechanism 120 which are detachably connected to the shell 100; the first twin-screw drive mechanism 110 is arranged along the x-axis direction, and is used to adjust the bidirectional translation of the x-axis of the crystal box 300; the second twin-screw drive mechanism 120 is arranged along the y-axis direction, and is used to adjust the bidirectional translation of the y-axis of the crystal box 300; specifically, a gap is left between the shell 100 and the main body 200, and the first twin-screw drive mechanism 110 and the second twin-screw drive mechanism 120 are both adjusted by a "loose and tight" method; taking the first twin-screw drive mechanism 110 as an example, the first twin-screw drive mechanism 110 is composed of two parallel differential screws, and the differential screw head has a scale mark, and each small grid scale corresponds to a certain displacement, for example, each small grid scale corresponds to a displacement of 0.01 mm, so that the operator can accurately control the adjustment amount. One end of the two screws is detachably connected to the housing 100 through the bearing seat, ensuring that the screws can rotate freely and ensuring their stability during operation. The other end extends between the housing 100 and the main body 200. When the differential screw head is rotated, the two screws "loosen and tighten" in a manner that causes the main body 200 to produce translational motion in the x-axis direction, thereby driving the crystal box 300 installed on the top of the main body 200 to achieve bidirectional translation in the x-axis direction. When both screws are tightened, they are in a locked state; the structure and working principle of the second twin-screw drive mechanism 120 are similar to those of the first twin-screw drive mechanism, and will not be repeated here.

[0024] This embodiment uses the first twin-screw drive mechanism 110 and the second twin-screw drive mechanism 120 to enable the crystal box 300 to achieve high-precision bidirectional translation adjustment along the x-axis and y-axis directions. In actual use, the displacement of the crystal box 300 can be accurately controlled according to the scale mark by accurately rotating the differential screw head, so as to accurately locate the position of the variable cone curved crystal in a two-dimensional plane. High-precision position adjustment can ensure that the light beam is irradiated onto the variable cone curved crystal at an ideal position, optimizing the diffraction conditions during laser imaging. Compared with the traditional single screw or simple displacement adjustment method, this embodiment not only improves the accuracy of adjustment, but also enhances the stability and reliability of adjustment.

[0025] Preferably, the second adjustment component is arranged at the bottom of the second extension part 330, and the second adjustment component includes a first screw 210, which passes through the shell 100 and the main body 200 and is connected to the first limit hole 331 at the bottom of the second extension part 330. The second adjustment component is used to adjust the vertical displacement of the crystal box 300 along the z-axis; the pitch of the first screw 210 is preferably 0.5mm, and the graduation scale is divided into 50 equal parts, which can achieve an adjustment with an accuracy of 0.01mm; the second adjustment component realizes the vertical displacement adjustment of the crystal box 300 along the z-axis by arranging the first screw 210 at the bottom of the second extension part 330. The first screw 210 directly acts on the crystal box 300; corresponding through holes are processed on the shell 100 and the main body 200 at the position corresponding to the first screw 210 to ensure that the screw can pass smoothly and will not be interfered during movement. The first screw 210 is connected to the first limiting hole 331 at the bottom of the second extension 330. The design of the limiting hole not only ensures the effective connection between the first screw 210 and the crystal box 300, but also limits the movement of the crystal box 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 box 300 will move along the axial direction of the first screw 210, that is, the z-axis direction. In the laser imaging system, accurate z-axis displacement adjustment is crucial to adjusting the relative height of the variable cone surface curved crystal and the laser beam. Through this high-precision adjustment, the diffraction effect of the variable cone surface curved 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 the imaging. On the other hand, in the entire multi-dimensional adjustment mechanism, the second adjustment component serves as the reference of the z-axis. When the second adjustment component, the third adjustment component, and the fourth adjustment component are at the same height, the variable cone surface curved 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 cone surface bend crystal to a horizontal state, and provide a stable initial state for the subsequent precise adjustment of parameters of other dimensions. During the assembly process, first pass the first screw 210 through the through holes on the shell 100 and the main body 200, and then connect the connecting end of the screw to the first limiting hole 331 at the bottom of the second extension 330 of the crystal box 300. During the connection process, ensure that the connection is firm and the coaxiality of the screw and the limiting hole is good.

[0026] Preferably, see Fig.15 and Fig.16 As shown, the third adjustment component is arranged at the bottom of the second extension part 330 and is symmetrically arranged between the second adjustment component. The third adjustment component includes a second screw 220, which passes through the shell 100 and the main body 200 and is connected to the second limiting hole 332 at the bottom of the second extension part 330. The third adjustment component is used to adjust the rotation angle of the crystal box 300 around the y-axis; specifically, see Fig.16 As shown, the crystal box 300 rotates around the y-axis and around the generatrix of the variable cone curved crystal; the third adjustment component realizes the rotation angle adjustment of the crystal box 300 around the y-axis through the second screw 220 symmetrically arranged at the bottom of the second extension 330. The second screw 220 also penetrates the shell 100 and the main body 200. Through holes adapted to the second screw 220 are processed at the corresponding positions of the shell 100 and the main body 200 to ensure that the second screw 220 can pass smoothly and is not interfered when rotating. The second screw 220 is connected to the second limiting hole 332 at the bottom of the second extension 330. The limiting hole not only plays a connecting role, but also limits the unexpected movement of the crystal box 300 in other directions, so that the crystal box 300 only rotates around the y-axis. When the second screw 220 is rotated, due to the special connection structure between the second screw 220 and the second limiting hole 332 and the relative position relationship between the crystal box 300 and the main body 200, the crystal box 300 will rotate around the y-axis. In practical applications, by precisely controlling the rotation amount of the second screw 220, the rotation angle of the crystal box 300 around the y-axis can be precisely adjusted. At the same time, the rotation of the crystal box 300 around the y-axis is closely related to the rotation around the busbar of the variable cone curved crystal. The busbar of the variable cone curved crystal is its geometric characteristic line. When the crystal box rotates around the y-axis, the rotation angle of the variable cone curved crystal around the busbar changes synchronously, thereby adjusting the Bragg angle of the incident light beam. This composite rotational motion can further enrich the diffraction adjustment capability of the variable cone curved 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 curved crystal around the busbar to optimize the diffraction effect. By adjusting the second screw 220 in the third adjustment component, it is possible to achieve precise control of this composite rotational motion, thereby meeting the requirements for adjusting the crystal posture under different imaging requirements.

[0027] Preferably, the fourth adjustment component is arranged at the bottom of the first extension part 320, and the fourth adjustment component includes a third screw 230, the third screw 230 passes through the shell 100 and the main body 200 and is connected to the third limiting hole 321 at the bottom of the first extension part 320, and 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 pitch angle adjustment of the crystal box 300 around the x-axis through the third screw 230 arranged at the bottom of the first extension part 320. The third screw 230 passes through the shell 100 and the main body 200, and a through hole adapted to the third screw 230 is processed at the corresponding position of the shell 100 and the main body 200 to ensure that the screw can rotate freely and is not interfered during the adjustment process. The third screw 230 is connected to the third limiting hole 321 at the bottom of the first extension 320. The third limiting hole 321 not only realizes the connection between the screw and the crystal box 300, but more importantly, limits the undesired displacement of the crystal box 300 in directions other than rotation around the x-axis, so that the crystal box 300 can only perform pitch motion around the x-axis. When the third screw 230 is rotated, the connection between the third screw 230 and the third limiting hole 321 and the relative position relationship between the crystal box 300 and the main body 200 cause the crystal box 300 to pitch and rotate 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 230. In the process of laser imaging, the pitch angle of the variable cone curved crystal has a direct impact on the angle between the laser beam and the crystal surface, thereby determining 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 more optimal angle, so as to better focus on the imaging device and improve the clarity and quality of the imaging. It should be noted that in complex laser imaging scenes, different imaging requirements may require different crystal posture combinations, which requires the fourth adjustment component to work closely with other adjustment components to achieve all-round and multi-dimensional posture control of the variable cone surface curved crystal by precisely adjusting their respective parameters to meet the strict requirements for the crystal position and angle under various imaging conditions. In this embodiment, the pitch attitude of the variable cone surface curved crystal relative to the light beam can be precisely adjusted by setting a fourth adjustment component based on the third screw 230 at the bottom of the first extension portion 320 of the crystal box 300. The synergistic effect of the fourth adjustment component and other adjustment components further enriches the posture adjustment dimension of the variable cone surface curved crystal in space, and can meet the strict requirements for the crystal posture in complex and diverse laser imaging scenes.

[0028] Preferably, the connecting 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 the fourth limiting hole 340 in the middle of the crystal box 300 through a ball head, and 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 the first through hole 240 at the top of the main body 200 and fixed by the 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, and the core of the first limiting component 400 is to realize the connection and buffering function 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 crystal box 300 with flexible angle change possibilities during the multi-dimensional adjustment process. For example, when the third adjustment component or the fourth adjustment component is working, the crystal box 300 can comply with the rotation and pitching action 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, and a buffer mechanism is constructed. 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 the role of supporting and positioning the column 410 in the through hole of the main body 200, so that the column 410 can maintain a stable position during the working process, thereby ensuring the reliability of the connection between the crystal box 300 and the main body 200. The first limiting component 400 and the multi-dimensional adjustment component cooperate with each other to achieve precise adjustment of the variable cone surface curved crystal. This embodiment realizes a stable and flexible connection between the crystal box 300 and the main body 200 by setting the first limit component 400 in the connection component. The ball head connection gives the crystal box 300 the necessary rotational freedom in the multi-dimensional adjustment process, that is, the ball head connection provides passive freedom around the z-axis, so that it can better adapt to the adjustment of the rotation angle and pitch angle by the third and fourth adjustment components, ensuring that the variable cone surface curved crystal can be accurately adjusted to the required posture. The buffer mechanism of the first spring 420 effectively absorbs and offsets the vibration and external force impact that the mechanism may be subjected to during the adjustment and operation process, protects the crystal box 300 and the variable cone surface curved crystal, avoids position displacement or damage caused by vibration, and ensures the stability of imaging quality.

[0029] Preferably, the connecting assembly further comprises a plurality of groups of second limiting assemblies 500 disposed between the main body 200 and the crystal box 300, the plurality of groups of the second limiting assemblies 500 comprising 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, 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 on the second spring 520 The outside of the crystal box 300; specifically, the spring tensioning structure provided by the second limit assembly 500 not only damps each adjustment assembly, but also provides a fixing effect for the adjustment state; the second limit assembly 500 is preferably 4 groups, and the 4 groups of second limit assemblies 500 are spaced and distributed between the main body 200 and the crystal box 300; the second spring 520 makes an elastic tension between the crystal box 300 and the main body 200, and when each adjustment assembly adjusts the crystal box 300, the tension generated by the second spring 520 will form a damping force. For example, when the first adjustment assembly adjusts the horizontal displacement of the crystal box 300, the tension of the second spring 520 will produce a certain resistance to the movement of the crystal box 300. This damping force does not hinder the adjustment, but makes the adjustment process more stable; at the same time, when the adjustment is completed and the desired crystal box 300 posture is reached, the tension of the second spring 520 can provide a fixing effect for the adjustment state, which can maintain the crystal box 300 at the current position and prevent the crystal box 300 from unexpected position changes due to vibration or other small external forces. The second sleeve 510 is arranged outside the second spring 520, mainly for protection and guidance. The second sleeve 510 can prevent the second spring 520 from being hit or disturbed by external objects during operation, ensuring the normal operation of the spring. At the same time, the second sleeve 510 can also guide the expansion and contraction direction of the second spring 520, so that the spring can generate tension along a predetermined direction, thereby enhancing the stability of the damping and fixing effects.

[0030] In this embodiment, four groups of second limit assemblies 500 are preferably provided. 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 four groups of second limit assemblies 500 located at different positions will work together to provide 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, as well as the height adjustment and horizontal displacement adjustment, the four groups of second limit assemblies 500 can work together from different directions to ensure that a good damping effect can be achieved during the adjustment process in all dimensions, and after the adjustment is completed, the position of the crystal box 300 can be fixed in all directions to ensure the posture stability of the variable cone curved crystal in space.

[0031] Preferably, the adjustment mechanism further comprises a reference positioning assembly, which comprises 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 box 300 is locked; after the pull-ring pin 600 is pulled out, the adjustment freedom is maintained by the second limit assembly 500; specifically, the preload force of the second spring 520 is optimized through mechanical simulation to ensure the adjustment resistance and provide a stable reset force; the reference positioning assembly constructs an initial zero position locking mechanism through the pull-ring pin 600 and the positioning hole 610, and the positioning hole 610 is precisely set on the housing 100, and its position corresponds to a specific position when the crystal box 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 limits the movement of the main body 200 and the crystal box 300 connected thereto in all directions, thereby locking the crystal box 300 in the initial zero position. The initial zero position is an important reference state, ensuring that the variable cone curved crystal is in a known and stable position before adjustment begins, which helps the accuracy and repeatability of subsequent adjustments. When the crystal box 300 needs to be adjusted in multiple dimensions, the operator pulls the pull ring to remove the pull ring pin 600 from the positioning hole 610. At this point, the crystal box 300 is free from the constraints of the pin and the freedom of adjustment is restored. Through the reference positioning assembly, the crystal box 300 can be accurately reset to the initial zero position before each experiment or imaging task begins, which improves the accuracy and repeatability of the adjustment process, reduces the error accumulation caused by the uncertainty of the initial position, and helps to improve the accuracy and reliability of laser imaging.

[0032] See also Fig.17 , which shows a method flow chart of a method for adjusting a multi-dimensionally curved crystal with a variable cone surface provided by an embodiment of the present invention, using the multi-dimensionally curved crystal adjustment mechanism with a variable cone surface in the above embodiment of the present invention, the method comprises: Step S100: installing the variable cone curved crystal in the first cavity 310 of the crystal box 300; Step S200: Use a visible light source to illuminate the variable cone curved crystal to generate a focal line on the imaging plate; specifically, on the optical platform, place a high-intensity white light source, a variable cone curved crystal, an imaging plate, and a CCD camera for monitoring in sequence along the light path. The high-intensity white light source uses a special aperture at the output end of the optical fiber, 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 the divergent light source is irradiated onto the surface of the variable cone curved crystal, due to the special optical properties of the variable cone curved crystal, the light is diffracted and converged, and finally forms a focal line on the imaging plate. This focal line is an important basis for subsequent adjustments, and its shape reflects the adjustment effect of the variable cone curved crystal on light.

[0033] Step S300: Based on the image acquisition device, the shape of the focus line on the imaging plate is monitored in real time, and the horizontal displacement of the variable cone surface curved crystal is adjusted by the first adjustment component; specifically, in this embodiment, the CCD camera is preferably used to monitor the shape of the focus line on the imaging plate in real time, and the horizontal displacement of the variable cone surface curved crystal is adjusted by the first adjustment component, and 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 realize the overall movement by "one loose and one tight", and the same is true for the y-direction. When the CCD camera detects that the focus line deviates from the ideal position in the horizontal direction, the operator changes the horizontal position of the main body 200 by rotating the corresponding differential screw, thereby driving the crystal box 300 and the variable cone surface curved crystal to move in the horizontal direction. This adjustment method can accurately adjust the position of the variable cone surface curved crystal in a two-dimensional plane, so that the focus line gradually approaches the preset position in the horizontal direction, optimizes the relative position relationship between the light and the variable cone surface curved crystal, and lays the foundation for further adjustment of other dimensions in the future.

[0034] Step S400: Use the second adjustment component, the third adjustment component, and the fourth adjustment component to respectively adjust the height, rotation angle, and pitch angle of the variable cone surface curved crystal until the focal line reaches a preset state. Use the second adjustment component, the third adjustment component, and the fourth adjustment component to respectively adjust the height, rotation angle, and pitch angle of the variable cone surface curved crystal until the focal line reaches a 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, and the driving screw has a differential scale, which can divide 0.5mm into 50 equal parts to achieve a movement accuracy of 0.01mm. When the CCD camera detects that the position of the focal line in the vertical direction is not ideal, the height of the crystal box 300 is changed by rotating the height adjustment screw, thereby adjusting the vertical distance between the variable cone surface curved crystal and the light to optimize the focusing effect. The third adjustment component is realized by rotating the crystal adjustment screw. Fig.15 The fourth adjustment component is realized by the crystal pitch adjustment screw. Fig.15 In the φ direction, that is, adjustment around the x-axis. When the pitch angle of the focal 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 curved crystal, make the light irradiate the crystal at a more appropriate angle, make the focal line reach the preset thinnest state, and complete the optical path adjustment.

[0035] 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 box 300. When adjustment is required, the pull-ring pin 600 is pulled out, the crystal box 300 obtains the adjustment freedom, and each adjustment component starts to work. During the adjustment process, multiple sets of second limit assemblies 500 provide damping force for the adjustment of the crystal box 300 in various dimensions through the elastic tension of the second spring 520, making the adjustment process smoother, and fixing the position of the crystal box 300 after the adjustment is completed to ensure the accuracy and stability of the adjustment.

[0036] The variable cone surface curved crystal multi-dimensional adjustment method provided in this embodiment uses a specific variable cone surface curved crystal multi-dimensional adjustment mechanism, monitors the focus line shape in real time based on the image acquisition device, and uses a multi-dimensional adjustment component for precise adjustment, which can optimize and adjust the variable cone surface curved crystal in multiple dimensions such as horizontal displacement, height, rotation angle, and pitch angle. This multi-dimensional precise adjustment enables the variable cone surface curved crystal to diffract and converge light in the best posture, so that the focus line on the imaging plate reaches the preset thinnest state and the resolution of laser imaging.

[0037] See also Fig.18 , which shows a schematic structural diagram of a variable cone surface curved crystal optical path adjustment system provided by an embodiment of the present invention, using the variable cone surface curved crystal multi-dimensional adjustment mechanism in the above embodiment of the present invention, the system comprises: The white light source module is used to provide a white light source with a spot size of no more than 80 microns; in actual use, a high-intensity visible light generator is usually used as the basic light source. At the output end of the optical fiber, a specially designed aperture is installed, such as a tantalum sheet with a diameter of 10mm, a thickness of 50μm and an 80μm hole in the middle. This aperture can limit and filter the light emitted by the light source, allowing only the light with a diameter of no more than 80 microns in the center to pass through, thereby forming a small-sized white light source that meets the requirements.

[0038] The variable cone curved crystal is installed in the first cavity 310 of the crystal box 300 of the variable cone curved crystal multi-dimensional adjustment mechanism, and is used to diffract the incident white light source of the white light source illumination module into a focal line; the multi-dimensional adjustment mechanism plays a key adjustment role, and the first adjustment component can accurately adjust the horizontal position of the variable cone curved crystal, change the incident angle of the light and the crystal, and optimize the diffraction effect; the second adjustment component can adjust the height of the variable cone curved 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 cone curved 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 cone curved crystal around the x-axis, which also affects the incident and diffraction directions of the light. Through these multi-dimensional adjustments, the focal line reaches the optimal state; An imaging plate for recording the focus line of the diffraction of the variable cone-shaped curved crystal; The image acquisition device is used to obtain the position information of the focal line; the image acquisition device is preferably a CCD camera, which obtains the position information of the focal line by acquiring the image of the focal line on the imaging plate. The CCD camera has the characteristics of high resolution and real-time imaging, and can quickly and accurately capture the position change of the focal line. By analyzing the acquired image, it can be determined whether the focal line is in an ideal state, such as whether the focal line is the thinnest, whether it is located at the center of the imaging plate, etc. Based on this information, the operator can make corresponding adjustments to the variable cone curved crystal through a multi-dimensional adjustment mechanism to achieve precise adjustment of the optical path.

[0039] To summarize, the multi-dimensional adjustment mechanism for the variable cone surface bent crystal provided by the present invention installs the variable cone surface bent crystal in a crystal box, and can synchronously adjust the horizontal displacement, height, rotation angle and pitch angle of the variable cone surface bent crystal through the first adjustment component, the second adjustment component, the third adjustment component and the fourth adjustment component of the multi-dimensional adjustment component, so as to achieve high-precision focusing of the diffraction signal of the variable cone surface bent crystal and avoid the cumulative error of the traditional step-by-step adjustment; and quickly realize the imaging posture adjustment of the variable cone surface bent crystal. On the other hand, based on the variable cone surface bent crystal multi-dimensional adjustment mechanism, the variable cone surface bent crystal multi-dimensional adjustment method and variable cone surface bent crystal optical path adjustment system provided by the present invention can realize a small-sized white light source with a large divergence. 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, providing a clear reference for submicron adjustment; the large divergence angle enhances the optical path tolerance in a non-vacuum environment, and 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 adaptability to complex environments, and provides a reliable light source foundation and multi-dimensional adjustment means for high-resolution X-ray diagnosis and laser imaging experiments.

[0040] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0041] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. The variable cone surface curved crystal multi-dimensional adjustment mechanism is characterized by: It includes a shell, a main body, a crystal box and a multi-dimensional adjustment component; The main body is embedded in the shell and movably connected to the shell; The crystal box is installed on the top of the main body through a connecting assembly; the crystal box includes an integrally formed first cavity, a first extension portion and a second extension portion; The multi-dimensional adjustment component includes: A first adjustment component, provided on the housing, for adjusting the horizontal displacement of the main body; A second adjustment component, provided on the main body, for adjusting the height of the crystal box; A third adjustment component is provided on the main body and is used to adjust the rotation angle of the crystal box; The fourth adjustment component is arranged on the main body and is used for adjusting the pitch angle of the crystal box.

2. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to claim 1, characterized in that: The first adjustment component includes a first twin-screw drive mechanism and a second twin-screw drive mechanism detachably connected to the shell; the first twin-screw drive mechanism is arranged along the x-axis direction to adjust the bidirectional translation of the crystal box along the x-axis; the second twin-screw drive mechanism is arranged along the y-axis direction to adjust the bidirectional translation of the crystal box along the y-axis.

3. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to claim 1, characterized in that: The second adjustment component is arranged at the bottom of the second extension part, and the second adjustment component includes a first screw rod, which passes through the shell and the main body and is connected to the first limiting 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.

4. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to claim 3, characterized in that: The third adjustment component is arranged at the bottom of the second extension part and is symmetrically arranged between the second adjustment component. The third adjustment component includes a second screw rod, which passes through the shell and the main body and is connected to the second limiting 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.

5. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to claim 1, characterized in that: The fourth adjustment component is arranged at the bottom of the first extension part, and the fourth adjustment component includes a third screw rod. The third screw rod passes through the shell and the main body and is connected to the third limiting 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.

6. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to claim 1, characterized in that: The connecting component includes a first limiting component, which 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 limiting 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, and the first sleeve is embedded in the first through hole on the top of the main body and fixed through the second through hole at the bottom of the main body.

7. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to any one of claims 1 to 6, characterized in that: The connecting component also includes multiple groups of second limiting components arranged between the main body and the crystal box, and the multiple groups of second limiting components include a second sleeve and a second spring; one end of the second spring is connected to the fifth limiting hole on the crystal box, and the other end of the second spring is connected to the sixth limiting hole on the main body, and the second sleeve is arranged between the main body and the crystal box and the second sleeve is arranged outside the second spring.

8. The variable cone surface curved crystal multi-dimensional adjustment mechanism according to claim 7, characterized in that: The adjustment mechanism also includes a reference positioning component, which includes a pull ring pin and a positioning hole. When the pull ring pin is inserted into the positioning hole on the shell, 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 limit assembly.

9. A multi-dimensional adjustment method for a tapered curved crystal, characterized in that: Using the variable cone surface curved crystal multi-dimensional adjustment mechanism according to any one of claims 1 to 8, the method comprises: Installing the variable cone curved crystal in the first cavity of the crystal box; Use visible light source to illuminate the variable cone curved crystal to generate a focal line on the imaging plate; Based on the image acquisition device, the shape of the focus line on the imaging plate is monitored in real time, and the horizontal displacement of the variable cone surface bent crystal is adjusted by the first adjustment component; The second adjustment component, the third adjustment component and the fourth adjustment component are used to respectively adjust the height, the rotation angle and the pitch angle of the variable cone curved crystal until the focal line reaches a preset state.

10. The variable cone curved crystal optical path adjustment system is characterized by: The variable cone surface curved crystal multi-dimensional adjustment mechanism according to any one of claims 1 to 8 is adopted, and the system comprises: A white light source module, used to provide a white light source with a spot size not greater than 80 microns; A variable cone curved crystal is installed in the first cavity of the crystal box of the variable cone curved crystal multi-dimensional adjustment mechanism, and is used to diffract the incident white light source of the white light source illumination module into a focal line; An imaging plate for recording the focus line of the diffraction of the variable cone-shaped curved crystal; The image acquisition device is used to obtain the position information of the focal line.

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