Auxiliary installation equipment

Abstract

The embodiment of the utility model provides auxiliary installation equipment, the auxiliary installation equipment is used for the installation and debugging of an off-axis parabolic mirror, and the auxiliary installation equipment comprises a constraint diaphragm which is used for blocking a light beam at the edge of incident light and only allowing a central light beam of the incident light to pass through; the angle measuring devices are arranged on one side of the constraint diaphragm at intervals along the incident direction of the light; the focus positioning devices are arranged on one side of the angle measuring device at intervals in the reflection direction of the light, and the focus positioning devices are used for positioning the focus of the off-axis parabolic mirror; the cable comprises a first section and a second section, the first section is connected with the constraint diaphragm and the angle measuring device, and the second section is connected with the angle measuring device and the focus positioning device; wherein the angle measuring device is used for measuring an included angle alpha between the first section and the second section. According to the auxiliary mounting equipment provided by the embodiment of the invention, the mounting and debugging operation of the off-axis parabolic mirror is greatly simplified, and the working efficiency and the overall performance of the system are remarkably improved.

Description

Technical Field

[0001] This application belongs to the technical field of high-power optical engineering, and particularly relates to an auxiliary installation device. Background Art

[0002] With the remarkable enhancement of China's scientific research strength and manufacturing level, the application fields of large-scale optical systems (especially optical devices reaching the terawatt and petawatt levels) have been greatly expanded, widely extending to multiple key fields such as the research and development of new high-energy ion / electron accelerators, plasma physics detection, and frontier medical treatment. Given that such optical systems have a beam diameter on the order of dozens of centimeters, the off-axis parabolic mirrors on which their focusing depends often require a long focal length of 1 - 2 meters. At the same time, to ensure the beam quality, all optical components need to operate in a vacuum environment. This special environmental requirement makes the cavity design extremely compact, thus greatly limiting the installation space of the off-axis parabolic mirror.

[0003] Furthermore, to achieve efficient and precise focusing of the optical beam, the installation and debugging process of the off-axis parabolic mirror is crucial and requires a high degree of precision. However, due to its unique focusing mechanism, the off-axis parabolic mirror with a long focal length and large aperture has extremely strict control over the incident light and its relative angle, which directly increases the difficulty of installation and debugging.

[0004] In summary, in the face of the increasingly extensive application requirements and challenges of large-scale optical systems, achieving precise installation and debugging of off-axis parabolic mirrors within a limited space is a thorny problem in the industry. Utility Model Content

[0005] In view of this, the embodiments of this application provide an auxiliary installation device to solve the technical problem of the difficult precise installation and debugging of existing off-axis parabolic mirrors.

[0006] The embodiments of this application provide an auxiliary installation device. The auxiliary installation device is used for the installation and debugging of an off-axis parabolic mirror, and the auxiliary installation device includes:

[0007] A constraint aperture, which is movably arranged on the workbench surface along a first direction. The constraint aperture is used to block the peripheral light beams in the incident light and only allow the central light beam of the incident light to pass through;

[0008] An angle measuring device, which is arranged at one side of the constraint aperture at intervals along the incident direction of the light;

[0009] A focus positioning device, which is arranged at one side of the angle measuring device at intervals along the reflection direction of the light. The focus positioning device is used to position the focus of the off-axis parabolic mirror; and

[0010] A cable, including a first section and a second section, the first section and the second section being connected, the first section connecting the collimating aperture and the angle measuring device, and the second section connecting the angle measuring device and the focal point positioning device;

[0011] Wherein, the angle measuring device is used to measure the included angle α between the first section and the second section.

[0012] In some embodiments, the included angle α between the first section and the second section is equal to the off-axis angle of the off-axis parabolic mirror;

[0013] The first section is parallel to the central beam of the incident light, and the length of the second section is equal to the focal length of the off-axis parabolic mirror.

[0014] In some embodiments, the auxiliary mounting device further includes:

[0015] A first base, provided on the workbench surface;

[0016] A first support rod, movably arranged along a first direction on the first base, the first support rod being connected to the collimating aperture; and

[0017] A first limiting member, provided on the first base, one end of the first limiting member abutting against the first support rod;

[0018] Wherein, the height of the collimating aperture is adjusted by adjusting the relative height of the first support rod with respect to the first base.

[0019] In some embodiments, a pillar is provided at one end of the collimating aperture away from the first support rod, and a through hole for the cable to pass through is provided on the pillar;

[0020] Wherein, the orthographic projection of the first section of the cable on the workbench surface coincides with the orthographic projection of the central beam passing through the collimating aperture on the workbench surface.

[0021] In some embodiments, a cable reel is further provided at one end of the collimating aperture away from the first support rod, the cable reel is provided on the pillar, and the cable reel is used for storing and extracting the cable.

[0022] In some embodiments, the angle measuring device includes:

[0023] A second base, provided on the workbench surface;

[0024] A second support rod, movably arranged along a first direction on the second base; and

[0025] An angle measuring instrument, connected to the second support rod, the angle measuring instrument being used to measure the included angle α between the first section and the second section.

[0026] In some embodiments, the angle measuring device further includes a second limiting member disposed on the second base, and one end of the second limiting member abuts against the second support rod. The second limiting member is used to fix the position of the second support rod on the second base.

[0027] In some embodiments, a first connecting member is provided at the zero scale of the angle measuring instrument. The first connecting member is used to connect and fix the cable.

[0028] In some embodiments, the focal point positioning device includes:

[0029] A third base disposed on the workbench surface;

[0030] A third support rod movably disposed on the third base along a first direction; and

[0031] A focal point positioning plate connected to the third support rod. A focal point positioning hole is formed on the focal point positioning plate. The focal point positioning hole is used to position the focal point of the off-axis parabolic mirror.

[0032] In some embodiments, the focal point positioning device further includes a third limiting member disposed on the third base, and one end of the third limiting member abuts against the third support rod. The third limiting member is used to fix the position of the third support rod on the third base.

[0033] In some embodiments, a second connecting member is provided at one end of the third support rod away from the third base. The second connecting member is used to connect and fix the second section.

[0034] In some embodiments, the light passing aperture of the aperture stop is adjustable.

[0035] In some embodiments, the aperture stop includes one of a vane aperture stop, a sliding ring aperture stop, a spiral aperture stop, and a digital electronic control aperture stop.

[0036] The auxiliary installation device provided by the embodiments of the present application precisely focuses the position of the focus and the laser emission angle through the mutual cooperation of the restraint diaphragm, the angle measurement device, the focus positioning device, and the cable, thereby greatly simplifying the complexity of the installation and debugging process of the long-focus and large-aperture off-axis parabolic mirror, and significantly improving the work efficiency and the overall performance of the system. The auxiliary installation device provided by the embodiments of the present application can quickly complete the adjustment of the off-axis parabolic mirror in two dimensions, vertical and horizontal, with an angle error of less than 0.2 degrees. Moreover, it has a high degree of adjustment freedom, good stability, and a wide range of application platforms, with a simple structure, convenient processing, safe and stable operation, and strong reliability; it is easy to adjust, replace, improve, and expand functions, can be applied to large-scale precision instruments with different indicators, and can realize the broadening of the effective adjustment platform capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 is a schematic structural diagram of the auxiliary installation device provided by the embodiments of the present application;

[0039] Figure 2 is Figure 1 a schematic structural diagram of the restraint diaphragm device in

[0040] Figure 3 is Figure 2 a schematic structural diagram from another perspective;

[0041] Figure 4 is Figure 1 a schematic structural diagram of the angle measurement device in Figure 1 ;

[0042] Figure 5 is Figure 1 a schematic structural diagram of the angle measurement device in Figure 2 ;

[0043] Figure 6 is Figure 1 a schematic structural diagram of the focus positioning device in

[0044] Figure 7 is a schematic diagram of the working state of the auxiliary installation device provided by the embodiments of the present application.

[0045] Among them, the reference numerals in the drawings:

[0046] 100, off-axis parabolic mirror;

[0047] 10. Constraint diaphragm device; 11. Constraint diaphragm; 12. First base; 13. First support rod; 14. First limiting member; 15. Support pillar; 150. Through hole

[0048] 20. Angle measuring device; 21. Second base; 22. Second support rod; 23. Angle measuring instrument; 24. Second limiting member; 25. First connecting member

[0049] 30. Focus positioning device; 31. Third base; 32. Third support rod; 33. Focus positioning plate; 330. Focus positioning hole; 34. Third limiting member; 35. Second connecting member

[0050] 40. Cable; 400. First section; 401. Second section

[0051] 50. Reel box Detailed implementation mode

[0052] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are presented to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the embodiments of the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the embodiments of the present application.

[0053] It should also be understood that the term "and / or" used in the specification of the embodiments of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0054] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0055] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0056] In addition, in the description of the embodiments of the present application and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0057] References to "some embodiments" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Multiple" refers to two or more.

[0058] An off-axis parabolic mirror (OAP) is a special type of mirror whose reflecting surface is a section of a standard parabola, rather than a fully symmetrical parabola. This design allows light to strike the mirror at an angle and, after reflection, converge to a focal point that is not in the path of the incident light. This characteristic makes off-axis parabolic mirrors ideal for applications where obstruction of the light path is necessary, such as in astronomical observations, laser systems, optical measurement, and other precision optical systems.

[0059] Typically, the extremely compact cavity design required in specialized environments significantly limits the installation space for off-axis parabolic mirrors. To achieve efficient and precise focusing of the laser beam, the installation and commissioning of off-axis parabolic mirrors is crucial. Furthermore, the unique focusing mechanism of long-focal-length, large-aperture off-axis parabolic mirrors places extremely stringent requirements on controlling the relative angle between the incident light and the mirror, which directly increases the difficulty of installation and commissioning. Without the use of auxiliary assembly and adjustment methods, it is difficult to improve the overall stability and reliability of the system, and repeated commissioning further increases the difficulty of the operation.

[0060] The common installation method of long focal length and large aperture off-axis parabolic mirror requires the construction of a reference auxiliary laser path that is collinear with the laser path. Helium-neon laser is usually used as the reference laser, but there are the following problems: 1. The beam of He-neon laser is only 2mm in diameter, but our actual beam reaches tens to dozens of centimeters. According to the theoretical calculation formula of Gaussian focus, Where M is the beam quality factor, λ is the wavelength, d is the beam diameter, f is the focal length of the focusing mirror, and S is the focal spot size under the diffraction limit. In this formula, M, λ, and d are laser source parameters. Due to the differences between the actual laser and the reference laser source parameters, using a helium-neon reference laser to assist in the installation of a large-aperture off-axis parabolic mirror cannot accurately determine the position and angle of the actual focal point, resulting in a large error. 2. The wavefront quality of the reference laser source is completely different from that of the actual light source, and the difference in wavefront quality will lead to differences in the focal focusing performance. 3. The construction of the reference auxiliary laser optical path involves a more complex optical path. The inevitable differences between the reference optical path and the actual optical path greatly affect the installation of the off-axis parabolic mirror with a long focal length and a large aperture, and a more complex focal point optimization process is required in the later stage.

[0061] Based on this, the embodiment of the present application provides an auxiliary installation device for the installation and debugging of an off-axis parabolic mirror. By means of a constraint aperture, a cable, an angle measuring device, and a focal point positioning device, the position of the focusing focal point and the laser emission angle are accurately determined, greatly simplifying the installation and debugging process of the off-axis parabolic mirror with a long focal length and a large aperture.

[0062] The embodiment of the present application provides an auxiliary installation device for the installation and debugging of an off-axis parabolic mirror 100, as Figure 1 shown, the auxiliary installation device includes: a constraint aperture 11, an angle measuring device 20, a focal point positioning device 30, and a cable 40;

[0063] The constraint aperture 11 is movably arranged on the workbench surface along the first direction. The constraint aperture 11 is used to block the marginal light beams in the incident light and only allow the central light beam of the incident light to pass through;

[0064] The angle measuring device 20 is arranged at one side of the constraint aperture 11 at intervals along the incident direction of the light;

[0065] The focal point positioning device 30 is arranged at one side of the angle measuring device 20 at intervals along the reflection direction of the light. The focal point positioning device 30 is used to locate the focal point of the off-axis parabolic mirror 100;

[0066] The cable 40 includes a first section 400 and a second section 401. The first section 400 and the second section 401 are connected. The first section 400 connects the constraint aperture 11 and the angle measuring device 20, and the second section 401 connects the angle measuring device 20 and the focal point positioning device 30;

[0067] Wherein, the angle measuring device 20 is used to measure the included angle α between the first section 400 and the second section 401.

[0068] The auxiliary installation device provided by the embodiment of the present application uses the restraint aperture 11 to block the peripheral light beams in the incident light, allowing only the central light beam to pass through. This helps to reduce unnecessary stray light and ensure the purity of the optical path during the test; the angle measurement device 20 is used to measure the change in the incident angle of the light. This device can precisely adjust the angle of the OAP to ensure that the light is incident and reflected in the expected direction; the focus positioning device 30 is used to accurately position the focus of the OAP. By adjusting the position and angle of the OAP, the reflected light is accurately focused on a predetermined focus. The cable 40 is used to transmit mechanical motion and position information. By measuring the angle α between the first section 400 and the second section 401, the angle change of the OAP can be indirectly obtained for precise adjustment. The working principle of the auxiliary installation device provided by the embodiment of the present application is to fix the OAP on the workbench to ensure that its general position and angle are correct. Adjust the position of the restraint aperture 11 so that only the central light beam is allowed to pass through. Use the angle measurement device 20 to measure the angle of the incident light and record the initial reading. Adjust the angle of the OAP and observe the change in the reading of the angle measurement device 20 until the desired incident angle is reached. Use the focus positioning device 30 to detect the convergence point of the reflected light. Adjust the position and angle of the OAP so that the reflected light is accurately focused on a predetermined focus. Through the mechanical motion and position information transmitted by the cable 40, the angle of the OAP is further fine-tuned. Measure and record the angle α between the first section 400 and the second section 401 to ensure that the angle and position of the OAP reach the optimal state.

[0069] In applications, the auxiliary installation device provided by the present application is particularly suitable for occasions that require high-precision optical alignment, such as: the calibration and maintenance of astronomical telescopes, the optical path adjustment of laser processing equipment, and the calibration of high-precision optical measurement systems. Through this device, the installation and commissioning efficiency of the off-axis parabolic mirror 100 can be significantly improved, ensuring that it performs optimally in various applications.

[0070] It should be noted that the above-mentioned first direction is the Z direction in the figure, the direction along the incident direction of the light is the Y direction in the figure, and the direction along the reflected direction of the light is the X direction in the figure. The above is only for facilitating the understanding of the technical solution of the present application and should not be construed as a limitation on the protection scope of the embodiments of the present application.

[0071] In some embodiments, as Figure 7 shown, the angle α between the first section 400 and the second section 401 is equal to the off-axis angle of the off-axis parabolic mirror 100;

[0072] The first section 400 is parallel to the central light beam of the incident light, and the length of the second section 401 is equal to the focal length of the off-axis parabolic mirror 100. In this way, the focus of the OAP can be quickly positioned and the exit angle can be accurately determined, thus quickly completing the installation and commissioning of the OAP.

[0073] In an application, the off-axis angle is a key parameter of the OAP mirror, which determines the incident direction and reflection path of light. By precisely measuring and adjusting the off-axis angle, the optimal performance of the OAP mirror in an optical system can be ensured. Determining the off-axis angle can help designers select appropriate OAP mirror specifications to ensure that light can be correctly reflected and focused on the desired focal point. During installation and debugging, by measuring and adjusting the off-axis angle, the correct alignment of the OAP mirror can be ensured, thereby obtaining the best optical performance. The off-axis design allows light to enter at an angle deviating from the main axis, reducing the occlusion problem and improving the compactness and efficiency of the system.

[0074] In some embodiments, such as Figures 1 to 3 shown, the auxiliary installation device further includes a first base 12, a first support rod 13, and a first limiting member 14;

[0075] The first base 12 is disposed on the workbench surface;

[0076] The first support rod 13 is movably disposed along a first direction on the first base 12, and the first support rod 13 is connected to the restraint aperture 11;

[0077] The first limiting member 14 is disposed on the first base 12, and one end of the first limiting member 14 abuts against the first support rod;

[0078] Wherein, the height of the restraint aperture 11 is adjusted by adjusting the relative height of the first support rod 13 with respect to the first base 12. In this way, by adjusting the height of the first support rod 13, the height of the small hole in the restraint aperture 11 can be made consistent with the height of the focal point positioning device 30, so as to achieve the ideal central height of the focal point.

[0079] It should be noted that the workbench surface includes, but is not limited to, horizontal support surfaces such as the ground and the tabletop, to facilitate the installation and debugging of the OAP.

[0080] In an application, the first limiting member 14 is a locking screw. The first base 12 is provided with a chute (which can also be a perforation). The first support rod 13 is slidably installed in the chute, and the locking screw is disposed on the side wall of the first base 12, and one end thereof passes through the side wall of the first base 12 and is used to abut against the first support rod. In this way, the limiting function can be achieved, and the height of the central small hole of the restraint aperture 11 can be adjusted. Further, the first support rod 13 is also provided with a scale, and the scale shows the actual height of the central small hole of the restraint aperture 11, so as to facilitate intuitive adjustment.

[0081] In some embodiments, such as Figure 2 and Figure 3 shown, a support column 15 is provided at one end of the restraint aperture 11 away from the first support rod 13, and a through hole 150 for the cable 40 to pass through is provided on the support column 15;

[0082] Wherein, the orthographic projection of the first section 400 of the cable 40 on the workbench coincides with the orthographic projection of the central beam passing through the center of the constraint diaphragm 11 on the workbench. In this way, the first section 400 of the cable 40 is used to replace the central beam passing through the central small hole of the constraint diaphragm 11, and the second section 401 is used to replace the reflected light, so that the included angle between the incident light and the reflected light, that is, the off-axis angle, is reflected by the included angle α between the first section 400 and the second section 401. In this way, the actual off-axis angle of the OAP can be accurately measured, so as to achieve accurate installation and debugging.

[0083] In applications, the first section 400 of the cable 40 can be directly set on the constraint diaphragm 11, can also be directly connected to the support column 15, or can be fixed through the through hole 150 provided on the support column 15.

[0084] In some embodiments, as Figure 2 and Figure 3 shown, a reel box 50 is further provided at one end of the constraint diaphragm 11 away from the first support rod 13. The reel box 50 is arranged on the support column 15, and the reel box 50 is used for storing and extracting the cable 40. In this way, the storage and extraction of the cable 40 can be facilitated. When not in use, the reel box 50 can store the entire cable 40, which is convenient for transportation and storage. When in need of use, it can be directly extracted from the reel box 50.

[0085] In some embodiments, as Figure 4 and Figure 5 shown, the angle measuring device 20 includes a second base 21, a second support rod 22 and an angle measuring instrument 23;

[0086] The second base 21 is arranged on the workbench;

[0087] The second support rod 22 is movably arranged on the second base 21 along a first direction;

[0088] The angle measuring instrument 23 is connected to the second support rod 22, and the angle measuring instrument 23 is used to measure the included angle α between the first section 400 and the second section 401. In this way, by movably arranging the second support rod 22 on the second base 21 along the first direction and cooperating with the constraint diaphragm 11, the first section 400 of the cable 40 can be set parallel to the central beam of the incident light. That is, when adjusting the height of the constraint diaphragm 11, the height of the angle measuring instrument 23 is adjusted synchronously to ensure that the angle measured by the angle measuring instrument 23 is accurate.

[0089] In some embodiments, as Figure 4 and Figure 5As shown, the angle measuring device 20 further includes a second limiting member 24. The second limiting member 24 is disposed on the second base 21, and one end of the second limiting member 24 abuts against the second support rod 22. The second limiting member 24 is used to fix the position of the second support rod 22 on the second base 21. In application, the second limiting member 24 is a locking screw. The setting method and structure of the second limiting member 24 and the second base 21 are the same as or similar to those of the first limiting member 14 and the first base 12, so as to adjust the height of the angle measuring instrument 23 and the height of the first section 400 of the cable 40, ensuring that the first section 400 of the cable 40 is parallel to the central beam of the incident light.

[0090] In some embodiments, as Figure 4 and Figure 5 shown, a first connecting member 25 is provided at the zero scale of the angle measuring instrument 23. The first connecting member 25 is used to connect and fix the cable 40. In application, the first connecting member 25 is a support rod. The cable 40 passes around the support rod and then turns to be connected to the focus positioning device 30. In this way, the off-axis angle of the OAP can be indirectly reflected to the greatest extent through the angle between the first section 400 and the second section 401.

[0091] In some embodiments, as Figure 6 shown, the focus positioning device 30 includes a third base 31, a third support rod 32 and a focus positioning plate 33;

[0092] The third base 31 is disposed on the workbench surface;

[0093] The third support rod 32 is movably disposed on the third base 31 along a first direction;

[0094] The focus positioning plate 33 is connected to the third support rod 32. A focus positioning hole 330 is formed on the focus positioning plate 33. The focus positioning hole 330 is used to position the focus of the off-axis parabolic mirror 100. In this way, by movably disposing the third support rod 32 on the third base 31 along the first direction, cooperating with the constraint aperture 11, the angle measuring instrument 23 and the first connecting member 25, the first section 400 of the cable 40 can be set parallel to the central beam of the incident light, and the second section 401 can be parallel to the reflected light. That is, when adjusting the height of the constraint aperture 11, the heights of the angle measuring instrument 23 and the focus positioning hole 330 are adjusted synchronously to ensure that the angle measured by the angle measuring instrument 23 is accurate, and the central small hole of the constraint aperture 11 and the focus positioning hole 330 are at the same height.

[0095] In some embodiments, as Figure 6As shown, the focus positioning device 30 further includes a third limiting member 34. The third limiting member 34 is disposed on the third base 31, and one end of the third limiting member 34 abuts against the third support rod 32. The third limiting member 34 is used to fix the position of the third support rod 32 on the third base 31. In application, the third limiting member 34 is a locking screw. The setting of the third limiting member 34 is the same as that of the first limiting member 14 and the second limiting member 24, which will not be elaborated here.

[0096] In some embodiments, as Figure 6 shown, a second connecting member 35 is provided at one end of the third support rod 32 away from the third base 31. The second connecting member 35 is used to connect and fix the second section 401. In application, the second connecting member 35 is a fixing hole, which facilitates the fixing of the second section 401 of the cable 40.

[0097] In some embodiments, the light passing aperture of the aperture stop 11 is adjustable. This can improve the beam quality. By adjusting the light passing aperture, the edge part of the incident beam can be filtered out. These edge parts often contain more stray light and diffraction effects, which affect the imaging quality. Only allowing the beam in the central part to pass through can significantly improve the beam quality. Adjusting the light passing aperture can change the light intensity distribution of the beam, making it more uniform, which is very important for applications requiring high uniformity (such as laser processing, optical measurement, etc.). Different light sources and optical systems may require different beam sizes. The adjustable light passing aperture enables the same set of equipment to adapt to multiple light sources and system configurations, increasing the versatility and flexibility of the equipment. For different experimental conditions and application scenarios, the system performance can be optimized by adjusting the light passing aperture, improving the compatibility. By restricting the light passing aperture, the influence of background noise and stray light can be reduced, and the signal-to-noise ratio can be improved. This is especially important for optical measurement and imaging applications requiring high sensitivity. In an imaging system, reducing stray light can improve the contrast of the image, making the details clearer. The adjustable light passing aperture helps to accurately align the components in the optical system. By gradually adjusting the aperture size, it is easier to find the optimal alignment position. During the debugging process, the light passing aperture can be dynamically adjusted according to needs, and the change of the system performance can be observed in real time, so as to quickly find the optimal configuration. For some sensitive optical components (such as detectors, sensors, etc.), an overly strong beam may cause damage. By adjusting the light passing aperture, the beam intensity can be controlled to protect these components from damage. In microscopes and imaging systems, the system resolution can be optimized by adjusting the light passing aperture, especially during high-magnification imaging. The size of the light passing aperture affects the depth of focus of the system. By adjusting the aperture, the depth of focus can be adjusted to adapt to different application scenarios.

[0098] In some embodiments, the aperture stop 11 includes one of a vane aperture, a sliding ring aperture, a spiral aperture, and a digital electronic control aperture.

[0099] See Figure 7 , a schematic diagram of the working state of the auxiliary installation device of the present application. After the incident light passes through the aperture-limiting diaphragm 11 with an adjustable light-transmitting aperture, the aperture-limiting diaphragm 11 only allows the central beam to pass through. The central beam is incident on the surface of the OAP, and after reflection and focusing, the angle measuring device 20 and the focal point positioning device 30 are placed according to the position and the outgoing angle of the OAP. The cable 40 in the cassette 50 is turned via the first connector 25 and then fixed to the second connector 35.

[0100] Among them, the first section 400 is parallel to the central beam, and the length of the second section 401 is consistent with the focal length of the OAP. The included angle α between the first section 400 and the second section 401 is consistent with the required off-axis angle of the OAP, and the angle α can be measured and determined by the angle measuring instrument 23. Then, the position of the OAP is adjusted so that the center of the OAP is below the zero scale of the angle measuring instrument 23. The angle of the OAP is rotated so that the focused focal point is located in the focal point positioning hole 330. At this time, the outgoing focused beam angle and the incident angle of the OAP reach the required reflection angle of the OAP, and the adjustment is completed.

[0101] The auxiliary installation device provided by the present application can quickly complete the adjustment of the OAP in two dimensions, vertical and horizontal, and the angle error is less than 0.2 degrees.

[0102] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0103] The above-described embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the embodiments of the present application.

Claims

1. An auxiliary installation device, characterized in that, The auxiliary installation device is used for the installation and debugging of an off-axis parabolic mirror. The auxiliary installation device includes: A restraint diaphragm, which is movably arranged on the workbench surface along a first direction. The restraint diaphragm is used to block the peripheral light beams in the incident light and only allow the central light beam of the incident light to pass through; An angle measuring device, which is arranged at one side of the restraint diaphragm at intervals along the incident direction of the light; A focus positioning device, which is arranged at one side of the angle measuring device at intervals along the reflection direction of the light. The focus positioning device is used to position the focus of the off-axis parabolic mirror; and A cable, which includes a first section and a second section. The first section and the second section are connected. The first section connects the restraint diaphragm and the angle measuring device, and the second section connects the angle measuring device and the focus positioning device; Wherein, the angle measuring device is used to measure the included angle α between the first section and the second section.

2. The auxiliary installation device according to claim 1, wherein The included angle α between the first section and the second section is equal to the off-axis angle of the off-axis parabolic mirror; The first section is parallel to the central light beam of the incident light, and the length of the second section is equal to the focal length of the off-axis parabolic mirror.

3. The auxiliary installation device according to claim 1, characterized in that The auxiliary installation device further includes: A first base, which is arranged on the workbench surface; A first support rod, which is movably arranged on the first base along the first direction. The first support rod is connected to the restraint diaphragm; and A first limiting member, which is arranged on the first base. One end of the first limiting member abuts against the first support rod; Wherein, the height of the restraint diaphragm is adjusted by adjusting the relative height of the first support rod and the first base.

4. The auxiliary installation device according to claim 3, characterized in that, A support column is provided at one end of the restraint diaphragm away from the first support rod. A through hole for the cable to pass through is opened on the support column; Wherein, the orthographic projection of the first section of the cable on the workbench surface coincides with the orthographic projection of the central light beam passing through the restraint diaphragm on the workbench surface.

5. The auxiliary installation device according to claim 4, wherein A cable reel is further provided at one end of the restraint diaphragm away from the first support rod. The cable reel is arranged on the support column. The cable reel is used for the storage and extraction of the cable.

6. The auxiliary installation device according to claim 1, wherein The angle measuring device includes: A second base, which is arranged on the workbench surface; A second support rod, which is movably arranged on the second base along the first direction; and An angle measuring instrument, which is connected to the second support rod. The angle measuring instrument is used to measure the included angle α between the first section and the second section.

7. The auxiliary installation device according to claim 6, wherein, The angle measuring device further includes a second limiting member, which is arranged on the second base. One end of the second limiting member abuts against the second support rod. The second limiting member is used to fix the position of the second support rod on the second base; And / or, a first connecting member is provided at the zero scale of the angle measuring instrument. The first connecting member is used to connect and fix the cable.

8. The auxiliary installation device according to claim 1, characterized in that The focus positioning device includes: A third base, which is arranged on the workbench surface; A third support rod, which is movably arranged on the third base along the first direction; and A focus positioning plate, which is connected to the third support rod. A focus positioning hole is opened on the focus positioning plate. The focus positioning hole is used to position the focus of the off-axis parabolic mirror.

9. The auxiliary installation device according to claim 8, characterized in that, The focus positioning device further includes a third limiting member, which is disposed on the third base, and one end of the third limiting member abuts against the third support rod, and the third limiting member is used to fix the position of the third support rod on the third base; And / or, a second connecting member is provided at one end of the third support rod away from the third base, and the second connecting member is used to connect and fix the second section.

10. The auxiliary installation device according to any one of claims 1 to 9, characterized in that, The light passing aperture of the aperture stop is adjustable; And / or, the aperture stop includes one of a vane aperture stop, a sliding ring aperture stop, a spiral aperture stop, and a digital electronic control aperture stop.

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