An adjustable rectangular optical element flexible support structure and method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN SPACE SANJIANG LITRI CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-06-16
Smart Images
Figure CN119882161B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of precision optomechanical technology, and more specifically, relates to an adjustable flexible support structure and method for rectangular optical elements. Background Technology
[0002] The support structure for optical components has a significant impact on maintaining good system performance in an optical system. Conventional clamping ring support involves directly mounting the lens within the lens mount, with the lens's outer edge directly against the support step ring of the lens chamber. This results in a large contact area, and if there are manufacturing errors or structural deformations in the lens chamber, assembly stress will be generated after the lens body is pressed together, causing a deterioration in the surface accuracy of the lens. Furthermore, optical components are generally made of materials with low coefficients of thermal expansion. Direct assembly with a metal lens chamber, under temperature gradients, will generate thermal stress due to the difference in the coefficients of thermal expansion of the materials, which will also reduce the surface accuracy of the lens. Therefore, it is necessary to use other types of support structures to replace conventional clamping ring support to ensure good system performance of the optical system.
[0003] Patent CN115407471A discloses a low-stress multi-point flexible support structure and method for a large-aperture rectangular optical mirror. By using flexible support units with multiple degrees of rotational and translational freedom in different directions, installed on the outer wall of the mirror chamber, it can effectively compensate for stress introduced by various factors, ensuring the positional and surface accuracy of the optical mirror and effectively reducing the vibration amplitude of the optical mirror in a vibration environment. However, this support structure lacks adjustability; after the flexible support units are installed, fine adjustments to the position of the optical mirror cannot be made. If there are processing errors in the structural components and mounting planes, the positional accuracy of the optical mirror will still be affected.
[0004] Therefore, it is necessary to design an adjustable flexible support structure for rectangular optical elements to solve the above problems. Summary of the Invention
[0005] To address the problems of existing optical mirror support structures lacking adjustability, being unable to cope with the decrease in accuracy caused by subsequent stress changes, and being unable to make fine adjustments to the position of the optical mirror, this invention provides an adjustable flexible support structure and method for rectangular optical elements to solve these problems.
[0006] To achieve the above objectives, the present invention provides an adjustable flexible support structure for a rectangular optical element, including a lens chamber in which a rectangular optical element is fixed by adhesive bonding on its inner side; a lens frame for supporting and connecting the lens chamber, the inner frame of which is larger than the lens chamber size to provide adjustment space for fine-tuning of the rectangular optical element; and multiple sets of horizontal flexible support frames for connecting the front and rear sides of the lens chamber to the lens frame, forming a U-shaped structure, including a first horizontal connecting plate, a first flexible groove, a locking nut, a ball-head adjusting screw, a second flexible groove, and a mounting base; the second flexible groove shares the same groove as the first flexible groove. The two grooves are opposite in orientation; the ball-head adjusting screw is threaded to the outer groove wall of the first flexible groove, and its bottom abuts against the inner groove wall of the first flexible groove; the vertical flexible support frame used to connect the left and right sides of the mirror chamber to the mirror frame respectively has a U-shaped structure; according to the actual adjustment requirements, the ball-head adjusting screw on the corresponding horizontal flexible support frame is turned to adjust the groove spacing of the first flexible groove and the second flexible groove, thereby changing the relative position between the mirror chamber and the mirror frame. After adjusting multiple horizontal flexible support frames in sequence, the positions of multiple degrees of freedom of the rectangular optical element can be changed, so as to achieve fine adjustment of the position of the rectangular optical element.
[0007] Furthermore, one end of the first horizontal connecting plate is provided with a first through hole, and a bolt is threadedly connected to the front or rear side of the frame after passing through the first through hole to achieve a fixed connection between one end of the first horizontal connecting plate and the frame; the first flexible groove includes a first vertical connecting plate, a third horizontal connecting plate, and a second vertical connecting plate, wherein the third horizontal connecting plate serves as the bottom of the groove, and the first vertical connecting plate and the second vertical connecting plate serve as the groove walls and are respectively vertically disposed at both ends of the third horizontal connecting plate; the other end of the first vertical connecting plate is vertically connected to the other end of the first horizontal connecting plate.
[0008] Furthermore, the second flexible groove shares the same groove wall with the first flexible groove, and their groove openings are opposite. It includes a second horizontal connecting plate and a third vertical connecting plate. The second horizontal connecting plate and the second vertical connecting plate are vertically fixedly connected at the other end, and the third vertical connecting plate is vertically disposed at the other end of the second horizontal connecting plate.
[0009] Furthermore, the middle of the mounting base is vertically fixed to the other end of the third vertical connecting plate, and a second through hole is provided on it. By using bolts to pass through the second through hole, it is threaded to the front or rear side of the mirror chamber, thereby realizing the fixed connection between the horizontal flexible support frame and the mirror chamber.
[0010] Furthermore, the bottom of the ball head adjusting screw passes through the first vertical connecting plate and abuts against the second vertical connecting plate, and its shaft is threadedly connected to the threaded hole provided on the first vertical connecting plate; the locking nut is located on the outside of the first vertical connecting plate and is threadedly connected to the ball head adjusting screw.
[0011] Further, the vertical flexible support frame is in a "ji" shape structure, and there are two groups of it, which are respectively arranged in the middle of the left and right sides of the mirror chamber along the horizontal X direction. It includes a horizontal connecting plate, a third flexible groove, a fourth flexible groove and a mounting plate. One end of the horizontal connecting plate is fixedly connected to the top of the left or right side of the mirror chamber, and the other end is connected to the third flexible groove. The third flexible groove and the fourth flexible groove share the same groove wall, and their groove openings are opposite. The mounting plate is connected to the fourth flexible groove. By passing bolts through the mounting plate and connecting them to the lens frame, the connection between the left and right sides of the mirror chamber and the lens frame is realized through the vertical flexible support frame.
[0012] Further, the mirror chamber is in a square structure, and its inner size is adapted to the rectangular optical element.
[0013] Further, a step positioning portion is further provided inside the mirror chamber, and a plurality of glue injection holes are provided on the outer circumference, and the glue injection holes are communicated with the inner wall surface of the mirror chamber.
[0014] Further, the mirror chamber, the lens frame, the horizontal flexible support frame and the vertical flexible support frame are all made of titanium alloy materials.
[0015] According to another aspect of the present invention, a method for flexibly supporting an adjustable rectangular optical element is further provided, including the following steps:
[0016] S100: The mirror chamber, the horizontal flexible support frame, the lens frame and the vertical flexible support frame need to be deeply cleaned before installation to ensure cleanliness; the rectangular optical element needs to be subjected to surface shape detection before installation.
[0017] S200: Place the rectangular optical element into the mirror chamber, ensure that there is no gap between the rectangular optical element and the step positioning portion, and the gaps between the rectangular optical element and the four inner side walls of the mirror chamber are equal.
[0018] S300: Inject optical glue between the rectangular optical element and the inner side wall of the mirror chamber through the glue injection hole on the mirror chamber. During the glue injection process, the excess glue needs to be cleaned up in time. After waiting for the glue layer to cure, the bonding of the rectangular optical element can be realized. Detect the surface shape of the rectangular optical element after bonding to ensure that there is no obvious change in the surface shape before and after bonding.
[0019] S400: Install the horizontal flexible support frame and the vertical flexible support frame on the outer peripheral sides of the mirror chamber, then connect the other mounting surfaces of the horizontal flexible support frame and the vertical flexible support frame to the lens frame, and finally install the lens frame on the corresponding mounting surface, thus completing the installation of the adjustable flexible support structure of the rectangular optical element.
[0020] S500: When adjusting the rectangular optical element up and down on the Y-axis, turn the ball head adjusting screws on multiple sets of horizontal flexible support frames to make the depth of the multiple sets of ball head adjusting screws consistent, so as to raise or lower the rectangular optical element to the required adjustment point.
[0021] S600: When the rectangular optical element is rotated on the X-axis for pitch adjustment, tighten the ball head adjusting screws on the two horizontal flexible support frames at the top of the lens chamber or tighten the ball head adjusting screws on the two horizontal flexible support frames at the bottom of the lens chamber simultaneously according to the actual adjustment requirements. After completion, use a lock nut to lock it.
[0022] S700: When the rectangular optical element is rotated on the Z-axis for left and right yaw adjustment, tighten the ball head adjusting screws on the two horizontal flexible support frames on the left side of the lens chamber or tighten the ball head adjusting screws on the two horizontal flexible support frames on the right side of the lens chamber simultaneously according to the actual adjustment requirements; observe the optical path direction in real time during the adjustment process, and tighten the locking nut when the adjustment reaches the specified position to lock the position of the lens chamber.
[0023] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:
[0024] 1. The flexible support structure of the present invention includes a mirror chamber, a mirror frame, a horizontal flexible support frame, and a vertical flexible support frame. Under adverse environments such as temperature changes and vibrations, the horizontal flexible support frame, the vertical flexible support frame, and the adhesive layer between the optical element and the mirror chamber, all located outside the mirror chamber, can effectively maintain the relative position between the mirror chamber and the mirror frame, thereby ensuring the positional and surface accuracy of the optical element. By setting ball-head adjusting screws on the flexible links to change the width of the flexible groove, the relative position between the mirror chamber and the mirror frame can be changed. By sequentially adjusting multiple horizontal flexible support frames, multiple degrees of freedom of the rectangular optical element can be changed, achieving fine adjustment of the position of the rectangular optical element.
[0025] 2. The flexible support structure of the present invention, wherein the mirror chamber, mirror frame, horizontal flexible support frame, and vertical flexible support frame are all made of titanium alloy, which has excellent mechanical properties and avoids interference with the accuracy of optical elements caused by structural strain due to environmental changes; wherein, the horizontal and vertical flexible support frames made of titanium alloy have high strength, good toughness, high specific strength and excellent fatigue resistance, and when the horizontal and vertical flexible support frames are deformed to adjust the position of the rectangular optical element, it can effectively prevent the rectangular optical element from deviating again due to stress changes caused by its own materials and structure.
[0026] 3. The flexible support structure of the present invention, through the I-shaped structure of the horizontal flexible support frame 2 and the vertical flexible support frame, can realize the flexible connection between the mirror chamber and the mirror frame. At the same time, through its own two sets of reverse grooves, it reserves adjustment space for deformation. It can convert the load into elastic potential energy through deformation, effectively reducing the impact of vibration or stress on the rectangular optical element, and also preventing permanent deformation of its own structure. Therefore, it will not hinder the adjustment of the rectangular optical element and can adapt to the adjustment needs after the stress of the rectangular optical element changes.
[0027] 4. The flexible support structure of the present invention can realize the displacement adjustment of the rectangular optical element in the three directions of X-axis, Y-axis and Z-axis by adjusting the ball head adjusting screw on the horizontal flexible support frame. The adjustment method is simple and improves the adjustment efficiency of the optical element.
[0028] 5. The flexible support structure of the present invention can be flexibly applied to rectangular optical elements of different sizes. It integrates the flexible support structure and the adjustable structure into one, with a simple structure, few parts, and simple installation and adjustment steps, which can realize the rapid installation and replacement of optical elements.
[0029] 6. The flexible support structure of the present invention provides flexible support for optical elements through flexible support links, which can effectively resist the influence of adverse factors such as vibration and temperature changes on the positional accuracy and surface shape of optical elements. The ball-head adjusting screw used in the present invention enables the adjustability of the flexible links, allowing for fine adjustment of the position of rectangular optical elements. This eliminates the influence of structural component processing errors and installation errors on the positional accuracy and surface shape of optical elements, thereby improving the installation accuracy of optical elements. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of an adjustable rectangular optical element flexible support structure according to an embodiment of the present invention;
[0031] Figure 2 This is a schematic diagram of the mirror chamber in an embodiment of the present invention;
[0032] Figure 3 This is a schematic diagram of the structure of the horizontal flexible support frame in an embodiment of the present invention;
[0033] Figure 4 This is a schematic diagram of the vertical flexible support frame in an embodiment of the present invention;
[0034] Figure 5 This is a flowchart illustrating the steps of an adjustable rectangular optical element flexible support method according to an embodiment of the present invention.
[0035] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-mirror chamber, 101-mounting hole, 102-insertion hole, 103-step positioning part, 2-horizontal flexible support frame, 201-first horizontal connecting plate, 202-second horizontal connecting plate, 203-first flexible groove, 204-first vertical connecting plate, 205-locking nut, 206-ball head adjusting screw, 207-third horizontal connecting plate, 208-second vertical connecting plate, 209-second flexible groove, 210-mounting base, 211-third vertical connecting plate, 3-mirror frame, 4-vertical flexible support frame, 401-horizontal connecting plate, 402-third flexible groove, 403-fourth flexible groove, 404-mounting plate, 5-rectangular optical element. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.
[0037] like Figure 1-3 As shown, this invention provides an adjustable flexible support structure for a rectangular optical element, including a lens chamber 1, a horizontal flexible support frame 2, a lens frame 3, and a vertical flexible support frame 4. The lens chamber 1 is a rectangular frame structure, and its inner wall is used to position and fix the rectangular optical element 5. The lens frame 3 supports and connects to the lens chamber 1, allowing for fine adjustments to the installation position of the rectangular optical element 5 within the lens frame 3. Multiple sets of the horizontal flexible support frame 2 are provided, respectively connecting the front and rear sides of the lens chamber 1 to the lens frame 3, and are used to adjust the position of the rectangular optical element 5. Two sets of the vertical flexible support frame 4 are provided, respectively connecting the left and right sides of the lens chamber 1 to the lens frame 3. The horizontal flexible support frame 2 is in the shape of an "I" and includes a first flexible groove 203, a second flexible groove 209, and a ball-head adjusting screw 206. By turning the ball-head adjusting screw 206, the spacing between the first flexible groove 203 and the second flexible groove 209 is adjusted, thereby changing the position between the mirror chamber 1 and the mirror frame 3. According to the pointing requirements of the optical system, the ball-head adjusting screws 206 on the horizontal flexible support frame 2 are adjusted sequentially to achieve multiple degrees of freedom adjustment of the rectangular optical element 5. The flexible support structure of the present invention uses the ball-head adjusting screw 206 to achieve the adjustability of the horizontal flexible support frame 2, realizes the fine adjustment of the position of the rectangular optical element, can eliminate the influence of structural component processing errors and installation errors on the positional accuracy and surface shape of the optical element, and improves the installation accuracy of the optical element.
[0038] like Figure 1-2As shown in the embodiment of the invention, the mirror chamber 1 is used to install and fix the rectangular optical element 5. It has a square frame structure, and its inner dimensions are adapted to the rectangular optical element 5. The rectangular optical element 5 is fixed by adhesive bonding. Further, to achieve accurate positioning, a stepped positioning part 103 is provided on the inner side of the mirror chamber 1. When the rectangular optical element 5 is lowered along the inner side of the mirror chamber 1, the stepped positioning part 103 provides positioning and blocking, allowing the rectangular optical element 5 to descend to the positioning installation point and remain horizontal. Multiple glue injection holes 102 are provided circumferentially on the outer side of the mirror chamber 1. The glue injection holes 102 communicate with the inner wall of the mirror chamber 1. After the rectangular optical element 5 is positioned and installed, the operator can perform glue injection through the glue injection holes 102, allowing the glue to seep into the gap between the inner side of the mirror chamber 1 and the outer side of the rectangular optical element 5, thereby forming an adhesive layer and connecting the mirror chamber 1 and the rectangular optical element 5 as a whole. Preferably, the mirror chamber 1 is provided with installation holes at the four corners of the inner side, which provide a point of leverage for the downward installation of the rectangular optical element 5. During installation, it can provide working space for the fingers, making it convenient for the operator to hold the rectangular optical element 5 at the four corners for installation, and at the same time, it can prevent the four corners of the rectangular optical element 5 from bumping against the inner wall of the mirror chamber 1.
[0039] like Figure 1 As shown, the lens frame 3 is used to support and connect the lens chamber 1. It has a square frame structure, and its inner frame size is slightly larger than the size of the lens chamber 1, leaving adjustment space for the fine adjustment of the rectangular optical element 5. The lens frame 3 has first mounting holes on the front and rear sides for mounting and fixing the horizontal flexible support frame 2, and second mounting holes on the top left and right ends for mounting the vertical flexible support frame 4.
[0040] like Figure 3As shown, multiple groups of the horizontal flexible support frames 2 are provided, which are used to connect the mirror chamber 1 and the lens frame 3, and finely adjust the rectangular optical element 5 through its own deformation to ensure the position accuracy of the optical mirror. The horizontal flexible support frame 2 is in a "self" shape structure, including a first horizontal connecting plate 201, a first flexible groove 203, a locking nut 205, a ball head adjustment screw 206, a second flexible groove 209 and a mounting seat 210. One end of the first horizontal connecting plate 201 is provided with a first through hole. By passing a bolt through the first through hole and threadedly connecting it with the first mounting hole, the fixed connection between one end of the first horizontal connecting plate 201 and the lens frame 3 is realized; the first flexible groove 203 includes a first vertical connecting plate 204, a third horizontal connecting plate 207, and a second vertical connecting plate 208. Among them, the third horizontal connecting plate 207 serves as the groove bottom, and the first vertical connecting plate 204 and the second vertical connecting plate 208 serve as the groove walls and are respectively vertically provided at both ends of the third horizontal connecting plate 207; further, the other end of the first vertical connecting plate 204 is vertically connected to the other end of the first horizontal connecting plate 201; the second flexible groove 209 shares the same groove wall with the first flexible groove 203, and their groove openings are opposite. It includes a second horizontal connecting plate 202 and a third vertical connecting plate 211. The second horizontal connecting plate 202 is vertically and fixedly connected to the other end of the second vertical connecting plate 208, and the third vertical connecting plate 211 is vertically provided at the other end of the second horizontal connecting plate 202; the locking nut 205 is located outside the first vertical connecting plate 204 and is threadedly connected to the ball head adjustment screw 206; the bottom of the ball head adjustment screw 206 passes through the first vertical connecting plate 204 and abuts against the second vertical connecting plate 208, and its rod body is threadedly connected to the threaded hole provided on the first vertical connecting plate 204. The middle of the mounting seat 210 is vertically and fixedly connected to the other end of the third vertical connecting plate 211, and it is provided with a second through hole. By passing a bolt through the second through hole and threadedly connecting it with the front side or the rear side of the mirror chamber 1, the fixed connection between the horizontal flexible support frame 2 and the mirror chamber 1 is realized.
[0041] As Figure 1As shown, the vertical flexible support frame 4 is in a "J" shape structure. There are two groups of it, which are respectively arranged at the middle positions on the left and right sides of the mirror chamber 1 along the horizontal X direction. It includes a horizontal connecting plate 401, a third flexible groove 402, a fourth flexible groove 403 and a mounting plate 404. One end of the horizontal connecting plate 401 is fixedly connected to the top of the left or right side of the mirror chamber 1, and the other end is connected to the third flexible groove 402. The third flexible groove 402 and the fourth flexible groove 403 share the same groove wall, and their groove openings are opposite. The mounting plate 404 is connected to the fourth flexible groove 403. By using bolts to pass through the mounting plate 404 and then connecting to the lens frame 3, the connection between the left and right sides of the mirror chamber 1 and the lens frame 3 is realized through the vertical flexible support frame 4. Further, through the third flexible groove 402 and the fourth flexible groove 403 provided on the flexible support frame 4, it can deform when the vertical flexible support frame 4 in the "J" shape structure receives an external load, convert the load into elastic potential energy through the deformation, avoid permanent deformation of the vertical flexible support frame 4 when reducing the influence of vibration or stress on the rectangular optical element 5, and thus will not hinder the adjustment of the rectangular optical element 5, and can adapt to the adjustment requirements after the stress change of the rectangular optical element 5.
[0042] When installing the flexible support structure of the present invention, lower the rectangular optical element 5 along the inner side of the mirror chamber 1 until it abuts against the step positioning portion 103, and detect whether the bottom of the rectangular optical element 5 is completely fitted with the step positioning portion 103. After complete fitting, inject glue into the gap between the inner side of the mirror chamber 1 and the outer side of the rectangular optical element 5 through the glue injection hole 102. After the glue solidifies, a glue fixing layer is formed, so as to connect the mirror chamber 1 and the rectangular optical element 5 into one body. Install the vertical flexible support frame 4 at the middle positions on the left and right sides of the mirror chamber 1, and use bolts to install and fix the other end of the vertical flexible support frame 4 on the lens frame 3. There are four groups or more of the horizontal flexible support frames 2, which are symmetrically arranged on the front and rear sides of the mirror chamber 1 respectively. Use bolts to pass through the mounting seat 210 to fixedly connect one end of the horizontal flexible support frame 2 to the front or rear side of the mirror chamber 1, and use bolts to pass through the first horizontal connecting plate 201 to fixedly connect the other end of the horizontal flexible support frame 2 to the front or rear side of the lens frame 3. Thus, the installation operation of the flexible support structure is completed.
[0043] When adjusting the rectangular optical element 5, if the rectangular optical element 5 deviates in the Y-axis direction due to stress changes, the ball head adjusting screws 206 on the multiple sets of horizontal flexible support frames 2 can be turned to make the depth of the multiple sets of ball head adjusting screws 206 consistent, thereby allowing the rectangular optical element 5 to be adjusted up and down in the Y-axis. When downward adjustment is required, the ball head adjusting screws 206 are turned to compress the groove spacing of the first flexible groove 203 and the second flexible groove 209 downward. When it is lowered to the required adjustment point, the locking nut 205 is turned to fit against the outside of the first horizontal connecting plate 201 to lock it, thus achieving the purpose of lowering the rectangular optical element 5 to the desired position. When adjusting upward, the ball head adjusting screws 206 are turned in the opposite direction to release the elastic potential energy of the horizontal flexible support frame 2, increasing the groove spacing of the first flexible groove 203 and the second flexible groove 209, thereby pushing the rectangular optical element 5 upward until it reaches the required adjustment point.
[0044] If the rectangular optical element 5 deviates in the X-axis direction due to stress changes and pitch adjustment is required, the ball head adjusting screws 206 on the two horizontal flexible support frames 2 at the top of the lens chamber 1 or the ball head adjusting screws 206 on the two horizontal flexible support frames 2 at the bottom of the lens chamber 1 can be tightened simultaneously according to the actual adjustment requirements. After completion, the locking nut 205 is used to lock it.
[0045] If the rectangular optical element 5 deviates in the required Z-axis direction due to stress changes and needs to be adjusted left and right, the ball head adjusting screws 206 on the two horizontal flexible support frames 2 on the left side of the mirror chamber 1 or the ball head adjusting screws 206 on the two horizontal flexible support frames 2 on the right side of the mirror chamber 1 can be tightened simultaneously according to the actual adjustment requirements. During the adjustment process, the optical path direction can be observed in real time. When the adjustment reaches the specified position, the locking nut 205 is tightened to lock the position of the mirror chamber 1.
[0046] The flexible support structure of this invention includes a mirror chamber 1, a mirror frame 3, a horizontal flexible support frame 2, and a vertical flexible support frame 4. Under adverse environments such as temperature changes and vibrations, the horizontal flexible support frame 2, the vertical flexible support frame 4, and the adhesive layer between the optical element and the mirror chamber 1, all located outside the mirror chamber, can effectively maintain the relative position between the mirror chamber 1 and the mirror frame 3, thereby ensuring the positional and surface accuracy of the optical element. By setting ball-head adjusting screws on the flexible links to change the width of the flexible groove, the relative position between the mirror chamber 1 and the mirror frame 3 can be changed. By sequentially adjusting multiple horizontal flexible support frames 2, multiple degrees of freedom of the rectangular optical element 5 can be changed, achieving fine adjustment of the position of the rectangular optical element 5.
[0047] The flexible support structure of this invention, including the mirror chamber 1, mirror frame 3, horizontal flexible support frame 2, and vertical flexible support frame 4, is made of titanium alloy, which has excellent mechanical properties and avoids interference with the accuracy of optical elements caused by structural strain due to environmental changes. Among them, the horizontal flexible support frame 2 and vertical flexible support frame 4, made of titanium alloy, have high strength, good toughness, high specific strength, and excellent fatigue resistance. When the horizontal flexible support frame 2 and vertical flexible support frame 4 are deformed to adjust the position of the rectangular optical element 5, it can effectively prevent the rectangular optical element 5 from deviating again due to stress changes caused by its own materials and structure.
[0048] The flexible support structure of the present invention, through the I-shaped structure of the horizontal flexible support frame 2 and the vertical flexible support frame 4, can realize the flexible connection between the mirror chamber 1 and the mirror frame 3. At the same time, through its own two sets of reverse grooves, it reserves adjustment space for deformation, which can convert the load into elastic potential energy through deformation, effectively reducing the impact of vibration or stress on the rectangular optical element 5, and also preventing permanent deformation of its own structure, so as not to hinder the adjustment of the rectangular optical element 5, and can adapt to the adjustment needs after the stress of the rectangular optical element 5 changes.
[0049] The flexible support structure of the present invention can realize the displacement adjustment of the rectangular optical element 5 in the three directions of X-axis, Y-axis and Z-axis by adjusting the ball head adjusting screw 206 on the horizontal flexible support frame 2. The adjustment method is simple and improves the adjustment efficiency of the rectangular optical element 5.
[0050] The flexible support structure of the present invention can be flexibly applied to rectangular optical elements 5 of different sizes. It integrates the flexible support structure and the adjustable structure into one, with a simple structure, few parts, and simple installation and adjustment steps, which can realize the rapid installation and replacement of optical elements.
[0051] The flexible support structure of this invention provides flexible support for optical elements through flexible support links, effectively resisting the influence of adverse factors such as vibration and temperature changes on the positional accuracy and surface shape of the optical elements. The use of ball-head adjusting screws in this invention enables the adjustability of the flexible links, allowing for fine adjustment of the position of the rectangular optical elements. This eliminates the influence of structural component processing errors and installation errors on the positional accuracy and surface shape of the optical elements, improving the installation accuracy of the optical elements.
[0052] The present invention also provides an adjustable flexible support method for rectangular optical elements, comprising the following steps:
[0053] S100: The mirror chamber 1, horizontal flexible support frame 2, mirror frame 3, and vertical flexible support frame 4 must be thoroughly cleaned before installation to ensure cleanliness. The rectangular optical element 5 must undergo surface shape inspection before installation.
[0054] S200: Place the rectangular optical element 5 into the mirror chamber 1, ensuring that the rectangular optical element 5 fits the step positioning part 103 without gaps and has equal gaps with the four side walls inside the mirror chamber 1.
[0055] S300: Optical adhesive is injected between the rectangular optical element 5 and the inner wall of the mirror chamber 1 through the injection hole 102 on the mirror chamber 1. During the injection process, excess adhesive should be cleaned up in time. After the adhesive layer has cured, the rectangular optical element 5 can be bonded. The surface shape of the bonded rectangular optical element 5 is checked to ensure that there is no obvious change in the surface shape before and after bonding.
[0056] S400: Install the horizontal flexible support frame 2 and the vertical flexible support frame 4 on the outer four sides of the mirror chamber 1, then connect the other side mounting surface of the horizontal flexible support frame 2 and the vertical flexible support frame 4 to the mirror frame 3, and finally install the mirror frame 3 on the corresponding mounting surface, thus completing the installation of the adjustable flexible support structure of the rectangular optical element 5.
[0057] S500: When the rectangular optical element 5 is adjusted up and down on the Y-axis, the ball head adjusting screws 206 on the multiple sets of horizontal flexible support frames 2 are turned to make the depth of the multiple sets of ball head adjusting screws 206 consistent, so that the rectangular optical element 5 can be raised or lowered to the required adjustment point.
[0058] S600: When the rectangular optical element 5 rotates on the X-axis for pitch adjustment, the ball head adjusting screws 206 on the two horizontal flexible support frames 2 at the top of the lens chamber 1 or the ball head adjusting screws 206 on the two horizontal flexible support frames 2 at the bottom of the lens chamber 1 are tightened simultaneously according to the actual adjustment requirements. After completion, the locking nut 205 is used to lock it.
[0059] S700: When the rectangular optical element 5 rotates on the Z-axis to adjust its left and right yaw, tighten the ball head adjusting screws 206 on the two horizontal flexible support frames 2 on the left side of the mirror chamber 1 or tighten the ball head adjusting screws 206 on the two horizontal flexible support frames 2 on the right side of the mirror chamber 1 simultaneously, according to the actual adjustment requirements; the optical path direction can be observed in real time during the adjustment process, and when the adjustment reaches the specified position, tighten the locking nut 205 to lock the position of the mirror chamber 1.
[0060] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. An adjustable flexible support structure for a rectangular optical element, characterized in that, include: The mirror chamber (1) has a rectangular optical element (5) fixed inside by adhesive bonding. The frame (3) used to support the mirror chamber (1) has an inner frame size larger than the mirror chamber (1) size, leaving adjustment space for fine-tuning of the rectangular optical element (5); The horizontal flexible support frame (2) used to connect the front and rear sides of the mirror chamber (1) to the mirror frame (3) is provided in multiple sets and has a U-shaped structure, including a first horizontal connecting plate (201), a first flexible groove (203), a locking nut (205), a ball head adjusting screw (206), a second flexible groove (209), and a mounting base (210); the second flexible groove (209) and the first flexible groove (203) share the same groove wall, and their groove openings are opposite; the rod of the ball head adjusting screw (206) is threaded to the outer groove wall of the first flexible groove (203), and its bottom abuts against the inner groove wall of the first flexible groove (203); one end of the first horizontal connecting plate (201) is provided with a first through hole, and a bolt is threaded to the front or rear side of the mirror frame (3) after passing through the first through hole to achieve a fixed connection between one end of the first horizontal connecting plate (201) and the mirror frame (3); the first flexible groove (203) includes a first vertical connecting plate (204), a third horizontal connecting plate (207), and a second vertical connecting plate (208), wherein the third horizontal connecting plate (207) serves as the bottom of the groove, and the first vertical connecting plate (204) and the second vertical connecting plate (208) serve as the groove walls and are respectively vertically disposed at both ends of the third horizontal connecting plate (207); the other end of the first vertical connecting plate (204) is vertically connected to the other end of the first horizontal connecting plate (201); the second flexible groove (209) shares the same groove wall with the first flexible groove (203), and the groove openings of the two are opposite, and it includes a second horizontal connecting plate (202) and a third vertical connecting plate (211), the second horizontal connecting plate (202) is vertically fixedly connected to the other end of the second vertical connecting plate (208), and the third vertical connecting plate (211) is vertically disposed at the other end of the second horizontal connecting plate (202); The vertical flexible support frame (4) used to connect the left and right sides of the mirror chamber (1) to the mirror frame (3) respectively has a J-shaped structure; According to the actual adjustment needs, turn the ball head adjusting screw (206) on the corresponding horizontal flexible support frame (2) to adjust the groove spacing of the first flexible groove (203) and the second flexible groove (209), thereby changing the relative position between the mirror chamber (1) and the mirror frame (3). Adjust multiple horizontal flexible support frames (2) in sequence to change the multiple degrees of freedom position of the rectangular optical element (5) and realize the fine adjustment of the position of the rectangular optical element.
2. The adjustable rectangular optical element flexible support structure according to claim 1, characterized in that, The mounting base (210) is vertically fixed to the other end of the third vertical connecting plate (211) at the middle. It is provided with a second through hole. After the bolt passes through the second through hole, it is threaded to the front or rear side of the mirror chamber (1), thereby realizing the fixed connection between the horizontal flexible support frame (2) and the mirror chamber (1).
3. The adjustable rectangular optical element flexible support structure according to claim 2, characterized in that, The bottom of the ball head adjusting screw (206) passes through the first vertical connecting plate (204) and abuts against the second vertical connecting plate (208), and its rod body is threadedly connected to the threaded hole provided on the first vertical connecting plate (204); the lock nut (205) is located outside the first vertical connecting plate (204) and is threadedly connected to the ball head adjusting screw (206).
4. An adjustable rectangular optical element flexible support structure according to any one of claims 1-3, characterized in that, The vertical flexible support frame (4) is in a "ji" shape structure, and there are two groups of it, which are respectively arranged at the middle positions on the left and right sides of the mirror chamber (1) along the horizontal X direction. It includes a horizontal connecting plate (401), a third flexible groove (402), a fourth flexible groove (403) and a mounting plate (404). One end of the horizontal connecting plate (401) is fixedly connected to the top of the left or right side of the mirror chamber (1), and the other end is connected to the third flexible groove (402); the third flexible groove (402) and the fourth flexible groove (403) share the same groove wall, and their groove openings are opposite. The mounting plate (404) is connected to the fourth flexible groove (403). By using bolts to pass through the mounting plate (404) and then connecting to the lens frame (3), the connection between the left and right sides of the mirror chamber (1) and the lens frame (3) is realized through the flexible support frame (4).
5. An adjustable rectangular optical element flexible support structure according to any one of claims 1-3, characterized in that, The mirror chamber (1) is in a square structure, and its inner size is adapted to the rectangular optical element (5).
6. An adjustable rectangular optical element flexible support structure according to any one of claims 1-3, characterized in that, A stepped positioning portion (103) is further provided inside the mirror chamber (1), and a plurality of glue injection holes (102) are provided on the outer circumference. The glue injection holes (102) are communicated with the inner wall surface of the mirror chamber (1).
7. An adjustable rectangular optical element flexible support structure according to any one of claims 1-3, characterized in that, The mirror chamber (1), the lens frame (3), the horizontal flexible support frame (2), and the vertical flexible support frame (4) are all made of titanium alloy materials.
8. An adjustable flexible support method for rectangular optical elements, implemented using the adjustable flexible support structure for rectangular optical elements as described in claim 1, characterized in that, It includes the following steps: S100: The mirror chamber (1), the horizontal flexible support frame (2), the lens frame (3), and the vertical flexible support frame (4) need to be deeply cleaned before installation to ensure cleanliness; the rectangular optical element (5) needs to be subjected to surface shape detection before installation. S200: Place the rectangular optical element (5) into the mirror chamber (1), ensure that there is no gap between the rectangular optical element (5) and the stepped positioning portion (103), and the gaps between the rectangular optical element (5) and the four inner side walls of the mirror chamber (1) are equal. S300: Inject optical glue between the rectangular optical element (5) and the inner side wall of the mirror chamber (1) through the glue injection hole (102) on the mirror chamber (1). During the glue injection process, the excess glue needs to be cleaned up in time. After waiting for the glue layer to cure, the bonding of the rectangular optical element (5) can be realized. Detect the surface shape of the rectangular optical element (5) after bonding to ensure that there is no obvious change in the surface shape before and after bonding. S400: Install the horizontal flexible support frame (2) and the vertical flexible support frame (4) on the outer peripheral side surfaces of the mirror chamber (1), then connect the other mounting surfaces of the horizontal flexible support frame (2) and the vertical flexible support frame (4) to the lens frame (3), and finally install the lens frame (3) on the corresponding mounting surface, that is, complete the installation of the adjustable flexible support structure of the rectangular optical element (5). S500: When the rectangular optical element (5) is adjusted up and down on the Y-axis, the ball head adjusting screws (206) on the multiple sets of horizontal flexible support frames (2) are turned to make the depth of the multiple sets of ball head adjusting screws (206) consistent, so that the rectangular optical element (5) is raised and lowered to the required adjustment point; S600: When the rectangular optical element (5) is rotated on the X-axis for pitch adjustment, the ball head adjustment screws (206) on the two horizontal flexible support frames (2) at the top of the mirror chamber (1) or the ball head adjustment screws (206) on the two horizontal flexible support frames (2) at the bottom of the mirror chamber (1) are tightened simultaneously according to the actual adjustment requirements. After completion, the locking nut (205) is used to lock it. S700: When the rectangular optical element (5) rotates on the Z-axis to adjust the left and right yaw, tighten the ball head adjusting screws (206) on the two horizontal flexible support frames (2) on the left side of the mirror chamber (1) or tighten the ball head adjusting screws (206) on the two horizontal flexible support frames (2) on the right side of the mirror chamber (1) according to the actual adjustment requirements; observe the optical path direction in real time during the adjustment process, and tighten the locking nut (205) when the adjustment reaches the specified position to complete the locking of the position of the mirror chamber (1).