Flexible optical element fixing seat with preset clamping force

Abstract

The application relates to a flexible optical element fixing seat with preset clamping force, and relates to the technical field of laser and optical precision machinery structures. The support seat is in a cuboid structure, a circular element accommodating cavity for mounting an optical element is arranged in the middle, a plurality of deformation boundary grooves are arranged on the outer periphery of the element accommodating cavity, and the plurality of deformation boundary grooves are symmetrically arranged along the tangent direction of the element accommodating cavity; the flexible cantilever is arranged in the deformation boundary groove and comprises a deformation rod and a clamping protrusion; the deformation rod is integrally connected with the support seat; the clamping protrusion is integrally connected with the deformation rod; the clamping protrusion protrudes to the outside of the deformation boundary groove and extends into the element accommodating cavity. The flexible cantilever clamping from the side changes the force formed by plane compression into clamping force pressing from the side, the clamping force is determined by the deformation degree of the flexible cantilever, can be preset in advance according to requirements, in addition, the symmetrical flexible cantilevers are arranged, the clamping force is more uniform, the clamping effect is effectively improved, and the clamping process can be disassembled at any time, and installation is convenient.

Description

Technical Field

[0001] This invention relates to the field of laser and optical precision mechanical structure technology, and in particular to a flexible optical element holder with preset clamping force. Background Technology

[0002] In high-precision optical systems such as solid-state lasers, the mounting and fixing of optical components such as waveplates and lenses is crucial. Traditional techniques typically employ physical structures such as screw clamping, set screw clamping, adhesive bonding, metal clamping plates, or spring coil clamping.

[0003] However, the torque generated by screw tightening is extremely uneven, and the local stress at point contact is excessive. Uneven pressure on optical components (such as waveplates) generates mechanical stress, leading to stress birefringence, which causes laser polarization distortion or wavefront distortion, severely affecting laser beam quality. Furthermore, the clamping force heavily relies on the assembly worker's feel or tightening torque, making it impossible to achieve precise, quantitative clamping at the micro-Newton / milli-Newton level for optical components of different thicknesses and materials. While using adhesive bonding can avoid the stress caused by screw tightening, it makes disassembly after installation inconvenient.

[0004] The above problems urgently need to be addressed. Summary of the Invention

[0005] This invention discloses a flexible optical element holder with preset clamping force, which aims to solve the technical problems existing in the prior art.

[0006] The present invention adopts the following technical solution, comprising: a support base, which is a cuboid structure, with a component receiving cavity for mounting optical components in the middle position, and a plurality of deformation dividing grooves are provided on the outer periphery of the component receiving cavity, the plurality of deformation dividing grooves being symmetrically arranged along the tangential direction of the component receiving cavity; a flexible cantilever, disposed in the deformation dividing groove, including a deformation rod and a clamping protrusion, the deformation rod being integrally connected to the support base, the clamping protrusion being integrally connected to the deformation rod, the clamping protrusion protruding to the outside of the deformation dividing groove and extending into the component receiving cavity.

[0007] Optionally, the flexible cantilever is a sheet-like structure with a thickness between 0.5 and 2 millimeters.

[0008] Optionally, the height of the clamping protrusion extending into the element receiving cavity does not exceed 0.5 mm.

[0009] Optionally, the length of the deformation rod is set between 5 and 10 mm.

[0010] Optionally, the depth of the deformation dividing groove is at least three times the thickness of the flexible cantilever.

[0011] Optionally, the flexible cantilever is made of a material with elastic deformation.

[0012] Optionally, it also includes: a lens positioning stage, integrally connected to the support base and facing the axial direction of the component receiving cavity; a preset interval is provided between the lens positioning stage and the outer wall of the support base, the preset interval being used to fix the optical component.

[0013] Optionally, multiple lens positioning stages are provided, and the multiple lens positioning stages are symmetrically distributed along the component receiving cavity; the positions of the lens positioning stages and the deformation dividing groove do not overlap.

[0014] Optionally, it also includes: two support blocks, symmetrically installed on both sides of the support base and integrally connected with the support base; the height of the support blocks is not higher than the lowest position of the component receiving cavity.

[0015] Optionally, the support block is provided with a through hole that runs perpendicular to the ground, and a fitting bolt can be installed in the through hole.

[0016] The technical solution adopted in this invention can achieve at least one of the following beneficial effects: In this embodiment of the invention, by setting a flexible cantilever for side clamping, the force formed by the plane pressing is transformed into a clamping force that is supported by the side. The clamping force is determined by the degree of deformation of the flexible cantilever and can be preset in advance according to needs without manual adjustment. In addition, the flexible cantilever with a symmetrical structure makes the clamping force more uniform, effectively improving the clamping effect. Moreover, it can be disassembled at any time during the clamping process, making installation convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of the present invention. The illustrative embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a front view of a flexible optical element holder with a preset clamping force according to the present invention; Figure 2 This is a front view of an optical element mounted on a flexible optical element holder with a preset clamping force, according to the present invention. Figure 3 This is an analysis diagram of the force influence of the deformation rod on the lens in a flexible optical element fixing seat with preset clamping force according to the present invention; Figure 4 This is an analysis diagram of the influence of deformation on the cantilever and lens in a flexible optical element fixing seat with preset clamping force according to the present invention. Figure 5This is a three-dimensional structural diagram of a flexible optical element holder with preset clamping force according to the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Support base; 2. Optical element; 3. Element housing cavity; 4. Deformation dividing groove; 5. Flexible cantilever; 51. Deformation rod; 52. Clamping protrusion; 6. Lens positioning stage; 7. Support block; 8. Through hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly indicated.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0021] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] To address the problems existing in related technologies, this application provides a flexible optical element holder with a preset clamping force.

[0023] This embodiment provides a flexible optical element holder with a preset clamping force, such as... Figure 1 As shown, Figure 1 This is a front view of a flexible optical element holder with a preset clamping force according to the present invention. The structure includes: The support base 1 has a cuboid structure with a component receiving cavity 3 in the middle for mounting the optical component 2. Multiple deformation dividing grooves 4 are provided on the outer periphery of the component receiving cavity 3. The multiple deformation dividing grooves 4 are symmetrically arranged along the tangent direction of the component receiving cavity 3. The flexible cantilever 5 is set in the deformation dividing groove 4 and includes a deformation rod 51 and a clamping protrusion 52. The deformation rod 51 is integrally connected to the support base 1, and the clamping protrusion 52 is integrally connected to the deformation rod 51. The clamping protrusion 52 protrudes to the outside of the deformation dividing groove 4 and extends into the component receiving cavity 3.

[0024] Optionally, the support base 1 is a rectangular body milled from a single piece of metal, serving as the supporting base for the entire optical element 2 fixing device. The support base 1 has a hollowed-out element receiving cavity 3, the size of which matches the outer circular contour of cylindrical optical elements 2 such as lenses and waveplates, serving as a limiting and accommodating space for the optical element 2. The support base 1 can be made of aerospace aluminum or stainless steel.

[0025] Optionally, multiple deformation dividing grooves 4 are formed on the outer periphery of the component receiving cavity 3. The grooves 4 are symmetrically distributed circumferentially along the tangent direction of the component receiving cavity 3 (preferably 3 sets of evenly distributed structures). The grooves 4 can completely cut off the local solid material of the support base 1, dividing the originally rigid outer ring of the base into an independent, elastically deformable area. The length and radial thickness of the grooves are designable parameters that directly determine the elastic stiffness of the flexible structure.

[0026] Optionally, the flexible cantilever 5 and the support base 1 are integrally machined from the same material, without any assembly gaps, and are composed of two continuous integral parts: the deformation rod 51 and the clamping protrusions 52. The deformation rod 51 is filled inside the deformation dividing groove 4, with one end seamlessly connected to the cuboid support base 1 body, and the other end extending suspended to the periphery of the component receiving cavity 3. The deformation rod 51 is the main body of elastic deformation. When the optical element 2 is installed into the component receiving cavity 3, the outer diameter of the optical element 2 is larger than the inscribed circle of the three clamping protrusions 52, which will push the deformation rod 51 outward. The deformation rod 51 undergoes bending elastic deformation, stores elastic potential energy, and continuously provides radial clamping force to the center in the opposite direction. The arm length, cross-sectional thickness, and groove depth of the deformation rod 51 can be freely adjusted through wire cutting parameters to change the structural elastic coefficient k. The clamping protrusion 52 is integrally formed on the end of the deformation rod 51 facing the center of the cavity, protruding outward and extending into the interior of the component receiving cavity 3. The end face of the clamping protrusion 52 is a curved surface, which only has a very small contact area to fit the outer circumference of the optical component 2, forming a three-point circumferential positioning support. The diameter of the inscribed circle of the three clamping protrusions 52 is slightly smaller than the outer diameter of the optical component 2, forming a slight interference fit during assembly. The uniform centripetal clamping force is generated by the rebound of the deformation rod 51, without the need for additional clamping parts such as screws or pressure plates.

[0027] Optionally, before assembly, the inscribed circles of the three clamping protrusions 52 are smaller than the outer diameter of the lens, resulting in a fixed interference fit. During assembly, the optical element 2 is pressed into the element receiving cavity 3, compressing the clamping protrusions 52 and causing the deformation rod 51 to bend radially outward, generating elastic deformation. The force formula is: the clamping force of a single cantilever is the elastic stiffness of the deformation rod 51, which is determined by the groove length, rod thickness, and elastic modulus of the metal material. In the design stage, only the length of the deformation dividing groove 4 needs to be adjusted to change k. Specifically, by lengthening the deformation dividing groove 4, the effective arm length of the deformation rod 51 increases, thereby reducing the stiffness k and ultimately reducing the clamping force. Conversely, shortening the deformation dividing groove 4 can increase the stiffness and ultimately increase the clamping force without changing the overall shape of the support base 1.

[0028] Optional, such as Figure 2 As shown, Figure 2 This is a front view of the mounting optical element 2 of a flexible optical element fixing seat with preset clamping force according to the present invention. The device features three-point symmetrical flexible spring-loaded clamping, with the load evenly distributed along the circumference, eliminating localized high-pressure stress. The clamping force is fixed by geometric dimensions, eliminating stress fluctuations caused by manual assembly torque, significantly reducing lens surface distortion and ensuring the output quality of high-power laser optical paths. The support base 1, deformation rod 51, and clamping protrusion 52 are all machined from a single piece of metal, with completely uniform thermal expansion coefficients across the entire structure. When the temperature changes, the three cantilever points expand and contract synchronously, automatically balancing stress and eliminating the risk of creep failure due to gaps in the parts. Even under long-term heating of the high-power laser and alternating high and low temperatures outdoors, the clamping force remains constant, significantly improving optical path stability. This structure relies on elastic interference to achieve self-locking clamping, eliminating the need for fasteners and adhesives. Lenses can be directly pressed in by hand and gently pulled out, simplifying assembly and disassembly. There is no chemical adhesive layer or metal thread wear, preventing contamination of the optical coating, and the components can be repeatedly assembled and disassembled for reuse.

[0029] In some preferred embodiments, the flexible cantilever 5 is a sheet-like structure with a thickness between 0.5 and 2 millimeters.

[0030] Optionally, the flexible cantilever 5 adopts a one-piece molded flat sheet structure, which undergoes planar bending deformation only along the radial direction of the optical element 2. The mechanical model is simple and the processing and molding are convenient. The thickness of the flexible cantilever 5 is limited to the range of 0.5 mm to 2 mm. Different thicknesses correspond to different elastic stiffness: the 0.5 mm thin sheet flexible cantilever 5 has low stiffness and gentle clamping force, which is suitable for ultra-thin, high-stress sensitive optical elements 2; the 0.8 to 1.5 mm medium thickness flexible cantilever 5 has the strongest versatility and can be matched with deformation dividing grooves 4 of different lengths to adapt to conventional lenses and polarizers; the 2 mm thick sheet flexible cantilever 5 has strong bending resistance and large clamping force, which is suitable for harsh working conditions with high vibration and high and low temperature alternation. At the same time, the upper and lower limits of thickness can avoid defects such as fatigue fracture, difficult assembly, and lens distortion under pressure of the flexible cantilever 5.

[0031] Optionally, the sheet-like flexible cantilever 5, with a thickness range of 0.5 to 2 mm, can achieve multi-level quantitative control of clamping force, with high deformation linearity and good consistency of clamping force during mass production. This size range takes into account both elastic deformation capability and structural fatigue life. The sheet-like structure is easy to process and dimensional accuracy is easy to ensure. Disassembly and assembly can be done by hand. Moreover, the cantilever wall thickness is uniform, and the circumferential thermal expansion is symmetrical and balanced under high and low temperature environments, resulting in long-term stable clamping force. This can not only avoid stress birefringence and surface damage to the optical element 2, but also adapt to various application scenarios such as laboratory precision optical paths and industrial laser equipment.

[0032] In some preferred embodiments, the height of the clamping protrusion 52 extending into the component receiving cavity 3 does not exceed 0.5 mm.

[0033] Optionally, the clamping protrusion 52 is integrally formed on the end of the sheet-like flexible cantilever 5 and extends into the element receiving cavity 3. Its height in contact with the optical element 2 and extending into the cavity is limited to within 0.5 mm, so that the deformation of the flexible cantilever 5 is within 0.5 mm. The protrusion adopts a slightly convex arc shape, and relies on a very small curved surface to contact the outer circumference of the lens. This upper limit constraint on the height avoids the clamping protrusion from conforming to the surface of the optical element 2 over a large area, and prevents the load concentration in the contact area. With the sheet-like cantilever with a thickness of 0.5 to 2 mm, the actual contact area of ​​the protrusion can be adjusted according to the lens size and brittleness, and the optical defects such as lens edge chipping, stress birefringence, and wavefront distortion caused by large-area compression can be avoided from the structural dimensions.

[0034] Optionally, the height of the clamping protrusion 52 within the cavity can be controlled within 0.5 mm to achieve micro-contact flexible clamping, which greatly reduces the local pressure area of ​​the optical element 2, evenly distributes the three-point radial clamping force, and minimizes the interference of mechanical stress on beam quality. The small contact area structure has a lower heat capacity and a smaller amount of thermal expansion and contraction deformation during high and low temperature cycles. It will not cause the optical element 2 to shift due to asymmetric thermal stress caused by an excessively large contact area. At the same time, the micro protrusion occupies less space in the accommodating cavity, and there is no interference in the disassembly and assembly of the optical element 2. It is simple to process and shape, and takes into account the long-term stability of the optical path, the protection of the component, and the convenience of assembly.

[0035] In some preferred embodiments, the length of the deformation rod 51 is set between 5 and 10 millimeters.

[0036] Optionally, the deformation rod 51, as the main elastic segment of the sheet-like flexible cantilever 5, has an overall length controlled between 5 mm and 10 mm, and is designed to match the cantilever with a thickness of 0.5 to 2 mm and the arc-shaped clamping protrusion 52 with a contact height of ≤0.5 mm. The length of the deformation rod 51 directly determines the elastic stiffness of the cantilever. Specifically, a 5 mm short deformation rod 51 has stronger rigidity and a greater clamping force under the same interference fit, making it suitable for high-vibration conditions; a 10 mm long deformation rod 51 has lower rigidity and a gentler clamping force, making it suitable for ultra-thin, stress-sensitive optical components 2; the lower limit of the length avoids insufficient elasticity due to the rod being too short and damage to the optical component 2 due to excessive assembly clamping force, while the upper limit prevents the deformation rod 51 from being too long and prone to plastic deformation and fatigue failure. The corresponding length can be matched within the range according to the working conditions.

[0037] Optionally, a deformation rod 51 with a length of 5 to 10 mm forms a complete adjustable stiffness range. Combined with the cantilever thickness, precise quantitative control of the clamping force can be achieved. The linear relationship between deformation and clamping force is stable, and the clamping force is highly consistent after batch processing. The deformation rod 51 of moderate length takes into account both elastic deformation capacity and structural strength. It is not prone to permanent deformation after multiple disassembly and assembly and long-term high and low temperature cycles, resulting in a longer service life. At the same time, this length is suitable for the overall cuboid shape of the fixing base, which will not occupy too much optical path space. The processing and grooving are easy. With the help of the micro clamping protrusion 52, low-stress centering clamping can be achieved, effectively suppressing stress birefringence and ensuring long-term stable output of the laser beam.

[0038] Optionally, the length of the deformation rod 51 (the length of the flexible cantilever 5) directly affects the clamping force. Specifically, this is reflected by the reaction force, the clamping contact area after deformation, the equivalent stress of the lens, and the equivalent stress of the cantilever. Finite element simulation using ANSYS was used to determine the influence of parameters such as the length of the flexible cantilever 5, the thickness of the flexible cantilever, and the extension amount (deformation) of the clamping protrusion on the lens clamping. The simulation process is as follows: a fixed constraint is set on the frame base, then specified displacement boundary conditions are set for a single cantilever, and then the equivalent stress of the entire frame is calculated. Based on the contact area between the lens and the frame, the equivalent stress of the lens is also calculated.

[0039] The specific experimental results are shown in Table 1. Additionally, as... Figure 3 As shown, Figure 3 The diagram below shows the force analysis of the deformation rod on the lens in a flexible optical element holder with preset clamping force, as described in this invention: Table 1. Influence of Deformation Rods of Different Lengths on the Force on the Lens In some preferred embodiments, the depth of the deformation dividing groove 4 is at least three times the thickness of the flexible cantilever 5.

[0040] Optionally, the deformation dividing groove 4 is a through-groove hollow structure that penetrates the support base 1. The groove depth is required to be no less than three times the sheet thickness of the flexible cantilever 5. The flexible cantilever 5 is integrally formed and arranged on the side of the single deformation dividing groove 4. The through-groove hollow structure can completely separate the flexible cantilever 5 from the main body of the support base 1. With a groove depth of more than three times the thickness of the cantilever, it completely eliminates the spatial interference of the support base 1 on the radial bending of the deformation rod 51, ensuring that the deformation rod 51 can complete elastic bending without obstruction. If the groove depth is less than three times the thickness of the cantilever or there is no through-groove, the remaining material of the support base 1 will restrict the deformation stroke of the cantilever, break the linear mechanical law of clamping force and assembly interference, make it impossible to achieve quantitative control of clamping force, and also cause local extrusion stress concentration.

[0041] Optionally, the deformation dividing groove 4 fully releases the deformation space of the flexible cantilever 5, allowing the theoretical mechanical calculation model to match the actual assembly force. The clamping force can be precisely preset by adjusting the length of the deformation rod 51 and the thickness of the flexible cantilever 5. The through groove is simple to process and form, which is convenient for wire cutting and integrated processing. The dimensional tolerance of mass production is easy to control. At the same time, the hollow structure reduces the overall weight of the support base 1. The flexible cantilever 5 is arranged on one side of the groove, and the structure is symmetrical and balanced in terms of force. The three cantilevers deform synchronously. With the clamping protrusion 52 with a height of no more than 0.5 mm, it can stably achieve low-stress three-point centering clamping. There is no thermal deformation interference caused by the physical constraint of the support base 1 in high and low temperature environments. The clamping force is stable and does not decrease over long-term use.

[0042] In some preferred embodiments, the flexible cantilever 5 is made of a material with elastic deformation.

[0043] Optionally, the flexible cantilever 5 and the support base 1 are integrally processed and formed. The metal material with deformation characteristics is selected, such as aviation aluminum or stainless steel. The material is made into a thin sheet, which can be bent under external force and return to its original shape after the external force is released. The elastic deformation material refers to the material that only undergoes elastic reversible deformation when it is bent under force. It can completely return to its original shape after the external force is removed and will not produce permanent plastic deformation. This can ensure that the deformation rod 51 can be stably rebounded after being assembled and opened, and continuously output a constant centripetal clamping force, avoiding the defects of ordinary soft materials being easily deformed and hard and brittle materials being easily broken.

[0044] Optionally, the flexible cantilever 5 is made of an elastic deformable material with a wide elastic deformation range. After repeated disassembly and assembly of optical components 2, the cantilever does not undergo permanent deformation. The clamping force does not decrease under long-term high and low temperature and vibration conditions, and the optical path positioning stability is strong. The material has a fixed elastic modulus, and the clamping force can be accurately calculated by combining the length of the deformation rod 51 and the thickness of the cantilever, so as to achieve quantitative and controllable low-stress clamping and effectively suppress lens stress birefringence. At the same time, the aerospace aluminum and stainless steel have excellent processing performance, are suitable for wire cutting and integrated grooving processing, and have the advantages of structural strength and lightweight, which can meet the long-term use requirements of various precision laser optical systems.

[0045] Optionally, the flexible cantilever 5 is made of a material with elastic deformation. The deformation of the flexible cantilever 5 directly affects the clamping force effect, specifically through the reaction force, the clamping contact area after deformation, the equivalent stress of the lens, and the equivalent stress of the cantilever. Finite element simulation using ANSYS was used to determine the influence of parameters such as cantilever length, cantilever thickness, and the extension amount (deformation) of the clamping protrusion on lens clamping. The simulation process is as follows: a fixed constraint is set on the frame base, then specified displacement boundary conditions are set for a single cantilever, and then the equivalent stress of the entire frame is calculated. Based on the contact area between the lens and the frame, the equivalent stress of the lens is also calculated.

[0046] The specific experimental results are shown in Table 2. Additionally, as... Figure 4 As shown, Figure 4 The diagram below shows the influence of deformation on the cantilever and lens in a flexible optical element holder with preset clamping force, as described in this invention. Table 2. Effects of different pre-set deformations of the cantilever on the stress of the cantilever and the lens. In some preferred embodiments, it further includes: a lens positioning stage 6, integrally connected to the support base 1 and facing the axial direction of the component receiving cavity 3; a preset interval is provided between the lens positioning stage 6 and the outer wall of the support base 1, the preset interval being used to fix the optical component 2. Figure 5 As shown, Figure 5 This is a three-dimensional structural diagram of a flexible optical element holder with preset clamping force according to the present invention.

[0047] Optionally, the support base 1 also integrally forms a lens positioning stage 6 oriented axially toward the component receiving cavity 3. A preset gap is reserved between the lens positioning stage 6 and the outer wall of the support base 1, and the gap size is not less than the thickness of the optical component 2 itself. The lens positioning stage 6 and the support base 1 are integrally formed from the same material and are used to axially support the end face of the optical component 2 and restrict the movement of the lens along the optical path. The design of the gap size being greater than or equal to the thickness of the lens ensures that the optical component 2 is completely accommodated in the inner space of the component receiving cavity 3 after installation, while reserving assembly and thermal expansion allowance. It works in conjunction with the through-hole deformation dividing groove 4 and the flexible cantilever 5 made of elastic deformable material to complete the limiting clamping.

[0048] Optionally, the lens positioning stage 6 achieves precise axial positioning of the optical element 2, and with the flexible cantilever 5 radial three-point clamping, completes the radial and axial bidirectional centering constraint, greatly improving the coaxiality of the lens; the reserved gap, which is not less than the thickness of the optical element 2, not only avoids the additional stress caused by the rigid compression of both sides of the optical element 2 at the same time, but also leaves a buffer space for the thermal expansion of the lens and the base under high and low temperatures, and prevents the distortion of the lens surface caused by thermal expansion clamping; at the same time, this gap facilitates the removal and placement from the rear side of the optical element 2, and the disassembly and assembly are without jamming. The one-piece molded structure has no assembly gap, and the axial positioning does not shift under long-term vibration and temperature cycling, continuously ensuring the stable output of the laser optical path.

[0049] In some preferred embodiments, multiple lens positioning stages 6 are provided, and the multiple lens positioning stages 6 are symmetrically distributed along the component receiving cavity 3; the positions of the lens positioning stages 6 and the deformation dividing groove 4 do not overlap.

[0050] Optionally, the support base 1 has multiple sets of lens positioning platforms 6 integrally formed. Each lens positioning platform 6 is symmetrically arranged around the circumference of the component receiving cavity 3, and the lens positioning platforms 6 and the deformation dividing groove 4 are spatially staggered and have no overlapping areas. The multiple sets of symmetrical lens positioning platforms 6 can support the end face of the optical component 2 from multiple points in the axial direction, achieving uniform axial positioning. The layout of the lens positioning platforms 6 avoids the deformation space of the flexible cantilever 5, does not occupy the deformation space of the flexible cantilever 5, and does not block the through-hole structure of the deformation dividing groove 4, ensuring that the deformation rod 51 can complete radial elastic bending without obstruction. At the same time, the integrally formed positioning platforms and the flexible cantilever 5 do not interfere with each other, and the entire structure can be integrally milled and wire-cut.

[0051] Optionally, the symmetrically distributed multi-lens positioning stage 6 can evenly distribute the axial load of the optical element 2, resulting in less pressure on a single point and preventing deformation caused by local pressure on the lens end face; the positioning stage and the deformation dividing groove 4 are staggered, which does not interfere with the elastic deformation movement of the flexible cantilever 5, and the clamping force control law is not disrupted, ensuring the coordinated work of three-point radial clamping and multi-point axial limiting; the structure has no spatial conflict, the integrated processing technology is simple, and the mass production has high dimensional consistency. The axial and radial dual limiting combined with the low contact area clamping protrusion 52 can reduce the assembly stress of the optical element 2 in all aspects, and the positioning accuracy of the lens remains stable in the long term under high and low temperature and vibration environments.

[0052] In some preferred embodiments, it further includes: two support blocks 7, symmetrically installed on both sides of the support base 1, and integrally connected with the support base 1; the height of the support blocks 7 is not higher than the lowest position of the component receiving cavity 3.

[0053] Optionally, the support base 1 has two symmetrically integrated support blocks 7 on both sides. The overall height of the support blocks 7 is lower than or equal to the lowest point of the component receiving cavity 3. The support blocks 7 and the support base 1 are machined from the same metal blank, without any splicing or assembly gaps. They are mainly used for the floor-mounted support of the entire optical mounting base on the optical platform and adjustment frame. The height-limited design ensures that the support blocks 7 will not encroach upward into the range of the component receiving cavity 3, will not obstruct or interfere with the insertion and removal of the optical component 2, and will not encroach on the arrangement space of the flexible cantilever 5 and the lens positioning stage 6. Together with the circumferentially symmetrical lens positioning stage 6 and the through-type deformation dividing groove 4, they form an interference-free overall layout.

[0054] Optionally, the symmetrical support blocks 7 on both sides can evenly bear the weight of the entire mounting base, ensuring stable force distribution after installation and preventing optical path coaxiality deviation caused by unilateral suspension and tilting. The height of the support block 7 does not exceed the low position of the component receiving cavity 3, so there is no physical obstruction when installing or removing the lens, ensuring smooth operation and not obstructing the optical path. The one-piece molded structure eliminates assembly gaps, and the support block 7 will not loosen or shift under high and low temperature cycles or equipment vibration. Combined with the radial flexible cantilever 5 and the axial lens positioning stage 6, it achieves stable low-stress clamping of the optical component 2 in all dimensions. The overall structure is simple, with fewer integrated processing steps and lower processing costs.

[0055] In some preferred embodiments, the support block 7 is provided with a through hole 8, which is perpendicular to the ground and can be used to install fitting bolts.

[0056] Optionally, the support blocks 7, which are integrally formed on both sides, have through holes 8 that penetrate vertically to the ground. Matching bolts can be inserted through the through holes 8 to complete the overall locking and fixing. The vertical layout of the through holes 8 allows the bolt tightening force to act directly on the optical platform in the vertical direction without generating lateral force. Moreover, the through holes 8 are completely arranged within the range of the support blocks 7, and do not interfere with the space of the component housing cavity 3, deformation dividing groove 4, and lens positioning stage 6. This will not damage the elastic deformation structure of the flexible cantilever 5, and it works in conjunction with the design that the height of the support blocks 7 is not higher than the lowest point of the housing cavity, so as not to affect the lens disassembly and assembly operations.

[0057] Optionally, the vertical through hole 8, combined with bolts, can quickly and securely lock the entire mounting base onto the optical platform and laser cavity. The symmetrical double support blocks 7 are simultaneously locked, ensuring balanced force on the base after installation, effectively resisting equipment vibration and preventing the support base 1 from shifting. The through hole 8 is a standard through hole, which is simple to process and compatible with conventional standard bolts, requiring no special tooling for assembly. The locking force is vertically downward, preventing additional lateral compressive stress on the central optical element 2. Combined with the radial flexible cantilever 5 and axial positioning platform, it ensures the overall stability of the machine installation while maintaining a low-stress clamping state for the optical element 2, ensuring long-term stable coaxial accuracy of the optical path.

[0058] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A flexible optical element holder with preset clamping force, characterized in that, include: The support base (1) has a cuboid structure and a component receiving cavity (3) for mounting optical components (2) is provided in the middle. Multiple deformation dividing grooves (4) are provided on the outer periphery of the component receiving cavity (3). The multiple deformation dividing grooves (4) are symmetrically arranged along the tangent direction of the component receiving cavity (3). The flexible cantilever (5) is disposed in the deformation dividing groove (4) and includes a deformation rod (51) and a clamping protrusion (52). The deformation rod (51) is integrally connected to the support base (1), and the clamping protrusion (52) is integrally connected to the deformation rod (51). The clamping protrusion (52) protrudes to the outside of the deformation dividing groove (4) and extends into the component receiving cavity (3).

2. The flexible optical element holder with preset clamping force according to claim 1, characterized in that, The flexible cantilever (5) is a sheet-like structure with a thickness between 0.5 and 2 millimeters.

3. The flexible optical element holder with preset clamping force according to claim 1, characterized in that, The height of the clamping protrusion (52) extending into the element receiving cavity (3) does not exceed 0.5 mm.

4. The flexible optical element holder with preset clamping force according to claim 1, characterized in that, The length of the deformation rod (51) is set between 5 and 10 millimeters.

5. A flexible optical element holder with preset clamping force according to claim 1, characterized in that, The depth of the deformation dividing groove (4) is at least three times the thickness of the flexible cantilever (5).

6. A flexible optical element holder with preset clamping force according to claim 1, characterized in that, The flexible cantilever (5) is made of a material with elastic deformation.

7. A flexible optical element holder with preset clamping force according to claim 1, characterized in that, Also includes: The lens positioning stage (6) is integrally connected to the support base (1) and faces the axial direction of the component receiving cavity (3); A preset interval is provided between the lens positioning stage (6) and the outer wall of the support base (1), and the preset interval is used to fix the optical element (2).

8. A flexible optical element holder with preset clamping force according to claim 7, characterized in that, Multiple lens positioning stages (6) are provided, and the multiple lens positioning stages (6) are symmetrically distributed along the component receiving cavity (3); The positions of the lens positioning stage (6) and the deformation dividing groove (4) do not overlap.

9. A flexible optical element holder with preset clamping force according to claim 1, characterized in that, Also includes: Two support blocks (7) are symmetrically installed on both sides of the support base (1) and integrally connected with the support base (1); The height of the support block (7) is not higher than the lowest position of the component accommodating cavity (3).

10. A flexible optical element holder with preset clamping force according to claim 9, characterized in that, The support block (7) is provided with a through hole (8) that penetrates the ground perpendicularly, and a fitting bolt can be installed in the through hole (8).

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