Lens fixing device

Abstract

The invention discloses a lens fixing device, and relates to the technical field of lens fixing. The lens fixing device comprises a bearing seat, a hanging assembly, a supporting assembly and a limiting assembly, and a mounting area is formed on the bearing seat and used for mounting a lens; the hanging assembly comprises an arc-shaped supporting piece, and the arc-shaped supporting piece is used for being hung in the mounting area of the bearing seat and used for supporting the side surface of the lens; the supporting assembly comprises at least one supporting part which is used for extending into the mounting area to abut against a mirror surface of the lens in the moving process; the limiting assembly comprises a limiting block which is used for partially extending into the installation area to abut against the other mirror face of the lens in the moving process. The side surface of the lens is supported on the concave surface of the lens arc-shaped supporting piece through the bearing seat 1, so that the force acting on the lens surface is reduced, the clamping deformation of the lens surface is reduced, and the surface precision variation of the lens in the fixing process is reduced. Therefore, the lens fixing device provided by the invention can reduce the damage to the lens in the lens fixing process.

Description

Technical Field

[0001] The invention relates to the technical field of lens fixing, and in particular to a lens fixing device. Background Art

[0002] With the continuous increase in lens diameter and width-to-thickness ratio under some special application conditions, higher requirements are placed on the clamping or fixing methods of medium and large-diameter lenses during transportation, testing, etc. From an optical point of view, the diameter of medium and large-diameter lenses is approximately in the range of 200 mm to 400 mm. The surface accuracy of medium and large-diameter optical lenses is easily affected by external environmental factors. Among them, the surface accuracy changes caused by the contact stress brought by the lens' own weight or clamping pressure are particularly prominent, which makes it difficult for the lens fixing device to stably fix the lens while reducing the impact on the lens. Summary of the invention

[0003] The main purpose of the present invention is to provide a lens fixing device, aiming to provide a lens fixing device capable of reducing the contact stress generated when fixing the lens.

[0004] To achieve the above object, the lens fixing device proposed by the present invention comprises:

[0005] A bearing seat, wherein the bearing seat is formed with a mounting area for mounting the lens;

[0006] A suspension assembly, comprising an arc-shaped support member, the concave and convex surfaces of the arc-shaped support member are arranged opposite to each other along a first direction, and are used to be suspended in the installation area of ​​the bearing seat, and the arc-shaped support member is used to support the side surface of the lens;

[0007] A support assembly, comprising at least one support portion, wherein the support portion is movably mounted to the bearing seat along the second direction, and is used to extend into the mounting area to press against a mirror surface of the lens during movement; and

[0008] The limiting assembly comprises a limiting block which is rotatably mounted to the bearing seat along an axis extending in the second direction, and is used for partially extending into the mounting area to press against the other mirror surface of the lens during the movement.

[0009] In one embodiment, the suspension assembly also includes a suspension structure, which has a movable end and a fixed end arranged relatively in a first direction, the fixed end of the suspension structure is fixedly mounted to the bearing seat, and the movable end of the suspension structure is connected to the arc-shaped support member.

[0010] In one embodiment, two suspension structures are provided, the arc-shaped support member has two ends in the arc-shaped extension direction thereof, and the movable ends of the two suspension structures are respectively connected to the two ends of the arc-shaped support member.

[0011] In one embodiment, the suspension structure comprises:

[0012] A mounting column extending along the second direction, one end of the mounting column being fixedly mounted to the bearing seat, and the mounting column being provided with an assembly hole along the first direction;

[0013] A moving rod is extended along a first direction, one end of the moving rod passes through the assembly hole and is connected to the mounting column; and

[0014] The rotating structure has two movable parts that can rotate relative to each other. The two movable parts are respectively connected to the other end of the moving rod and the end of the arc-shaped support member, so that the end of the arc-shaped support member can rotate relative to the moving rod.

[0015] In one embodiment, the rotating structure is configured as a rod end joint bearing, and the rod end of the rod end joint bearing is connected to the other end of the moving rod;

[0016] The suspension assembly also includes a transmission rod, which is inserted into the inner hole of the rod end joint bearing and fixedly connected to the end of the arc-shaped support member.

[0017] In one embodiment, two through holes are provided at the end of the arc-shaped support member in opposite directions, and the two ends of the transmission rod pass through the two through holes respectively to connect the end of the arc-shaped support member.

[0018] In one embodiment, the limit assembly also includes a limit rod, which extends along the second direction and has one end fixedly mounted to the supporting seat, and the limit block is provided with a guide hole extending along the second direction, and the limit block is slidably mounted on the outside of the limit rod along the second direction to adjust the position of the limit block in the second direction, so that the part of the limit block extending into the installation area presses against the other mirror surface of the lens.

[0019] In one embodiment, the limit block has an end face arranged in the second direction, and a side face adjacent to the end face, the side face is provided with a through hole, and the through hole is connected to the guide hole;

[0020] The limit assembly also includes a stop member, which has a stop end and a twisting end that are relatively arranged. The stop end is rotatably installed in the penetration hole, and the twisting end is used for an operator to twist to drive the stop end to move to press against the limit rod, or to drive the stop end to move to separate from the limit rod.

[0021] In one embodiment, the limiting assembly further includes an annular member, which is disposed around the other end of the limiting rod to limit the limiting block from sliding out of the limiting rod.

[0022] In one embodiment, the support assembly includes a plurality of screws, each of which is threadedly mounted to the bearing seat along the second direction, and a nut of each screw protrudes from the bearing seat and extends into the mounting area to press against a mirror surface of the lens; and / or,

[0023] The arc-shaped support member is configured as a steel belt; and / or,

[0024] The limiting components are provided in plurality along the circumference of the installation area.

[0025] In the technical solution provided by the present invention, the arc-shaped support member is suspended in the installation area of ​​the bearing seat, and the concave surface of the arc-shaped support member supports the side surface of the lens, thereby reducing the contact stress of the lens fixing device on the lens. In addition, the two mirror surfaces of the lens are pressed against by the support component and the limit component respectively, so as to achieve the fixation of the lens. Therefore, the lens fixing device provided by the present invention can achieve low contact stress fixation of large-diameter lenses, so that the lens obtains a reasonable stress field with sufficiently small deformation, and uniform strain within the light transmission range, thereby achieving stable fixation of the lens while reducing the impact on the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a lens fixing device provided by the present invention;

[0028] Figure 2 for Figure 1 A schematic structural diagram of the middle lens fixing device from another perspective;

[0029] Figure 3 for Figure 1 A schematic structural diagram of the middle lens fixing device from another perspective.

[0030] Description of Figure Numbers:

[0031] 100. Lens fixing device; 1. Support seat; 2. Suspension assembly; 21. Arc-shaped support member; 22. Mounting column; 23. Moving rod; 24. Rotating structure; 25. Transmission rod; 3. Support assembly; 4. Limit assembly; 41. Limit block; 42. Limit rod; 43. Stop member; 44. Ring member; 5. Handle; 61. Support plate; 62. Support connecting rod; a. Lens.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] With the continuous increase in lens diameter and width-to-thickness ratio under some special application conditions, higher requirements are placed on the clamping or fixing methods of medium and large-diameter lenses during transportation, testing, etc. From an optical point of view, the diameter of medium and large-diameter lenses is approximately in the range of 200 mm to 400 mm. The surface accuracy of medium and large-diameter optical lenses is easily affected by external environmental factors. Among them, the surface accuracy changes caused by the contact stress brought by the lens' own weight or clamping pressure are particularly prominent, which makes it difficult for the lens fixing device to stably fix the lens while reducing the impact on the lens.

[0037] The existing lens fixing device has a large contact stress when in contact with the lens, and it is difficult to stably fix the lens while reducing the impact on the lens.

[0038] In order to solve this technical problem, the present invention provides a lens fixing device 100. Figures 1 to 3The lens fixing device 100 includes a bearing seat 1, a suspension component 2, a support component 3 and a limit component 4. The bearing seat 1 is formed with an installation area for installing the lens a; the suspension component 2 includes an arc-shaped support member 21, the concave and convex surfaces of the arc-shaped support member 21 are relatively arranged along a first direction, and are used to be suspended in the installation area of ​​the bearing seat 1, and the arc-shaped support member 21 is used to support the side surface of the lens a; the support component 3 includes at least one supporting portion, and the supporting portion is movably mounted to the bearing seat 1 along a second direction, and is used to extend into the installation area during the movement to press against one mirror surface of the lens a; the limit component 4 includes a limit block 41 rotatably mounted to the bearing seat 1 along an axis extending along the second direction, and is used to partially extend into the installation area during the movement to press against the other mirror surface of the lens a.

[0039] In the technical solution provided by the present invention, the arc-shaped support member 21 is suspended in the installation area of ​​the bearing seat 1, and the concave surface of the arc-shaped support member 21 supports the side surface of the lens a, thereby reducing the contact stress of the lens fixing device 100 on the lens a. In addition, the two mirror surfaces of the lens a are pressed against by the support component 3 and the limit component 4, respectively, to achieve the fixation of the lens a. Therefore, the lens fixing device 100 provided by the present invention can achieve low contact stress fixation of the large-diameter lens a, so that the lens a obtains a reasonable stress field with sufficiently small deformation, and uniform strain within the light transmission range, thereby achieving stable fixation of the lens a while reducing the impact on the lens a.

[0040] It should be noted that the supporting seat 1 can be a plate-like structure having two oppositely arranged side surfaces in the second direction, or a support frame structure formed by a combination of multiple support structures, or a structure formed by a combination of a plate-like structure and a support frame structure, and the present invention does not impose any restrictions thereto.

[0041] It can be understood that the lens a has two end surfaces arranged opposite to each other in the thickness direction thereof, namely two mirror surfaces, and the side surface of the lens a is a surface adjacent to the two mirror surfaces of the lens a. The arc-shaped support member 21 may have a certain width in the second direction to support the side surface of the lens a. In some special cases, multiple arc-shaped members may be arranged in the second direction to form the arc-shaped support member 21 to jointly support the side surface of the lens a.

[0042] In the specific process of fixing the lens a, the supporting seat 1 can be placed horizontally first, that is, the second direction is the up and down direction, the supporting assembly 3 is adjusted to make it partially extend into the installation area, and the supporting assembly 3 is adjusted to a suitable height, the lens a is placed flat on the supporting assembly 3, and then the concave surface of the arc support member 21 is placed on the side surface of the lens a, so that after the lens a is converted from flat to vertical, the concave surface of the arc support member 21 can form a support for the side surface of the lens a; then the placement mode of the supporting seat 1 is converted to the second direction in the horizontal direction. At this time, the gravity of the lens a is mainly balanced by the supporting force of the arc support member 21 on the side surface of the lens a; the limit block 41 is adjusted to make it partially extend into the installation area to press against the other mirror surface of the lens a. At the same time, the supporting assembly 3 can press against the other mirror surface of the lens a to fix the lens a.

[0043] In order to suspend the arc-shaped support member 21 in the installation area of ​​the supporting seat 1, the two ends of the arc-shaped support member 21 can be connected to the supporting seat 1. When the supporting seat 1 is provided with a structure that can be used to connect the arc-shaped support member 21, for example, when the supporting seat 1 is provided with a support frame toward the installation area, the arc-shaped support member 21 can be directly connected to the support frame.

[0044] However, after the lens a is converted from horizontal placement to vertical placement, the relative position of the lens a and the support seat 1 may not necessarily be in the preset relative position, and the position of the lens a may need to be adjusted. Therefore, in some embodiments of the present application, the suspension assembly 2 also includes a suspension structure, the suspension structure has a movable end and a fixed end relatively arranged in a first direction, the fixed end of the suspension structure is fixedly mounted to the support seat 1, and the movable end of the suspension structure is connected to the arc support member 21. The suspension structure realizes the movement or deformation of the arc support member 21 through the relative movement of the movable end and the fixed end, thereby further realizing the adjustment of the position of the lens a.

[0045] Furthermore, two suspension structures are provided, and the arc-shaped support member 21 has two ends in the arc-shaped extension direction thereof, and the movable ends of the two suspension structures are respectively connected to the two ends of the arc-shaped support member 21. The positions of the two ends of the arc-shaped support member 21 relative to the support seat 1 are respectively adjusted by the two suspension structures, so that the position of the lens a relative to the support seat 1 can be more conveniently adjusted to reach a suitable predetermined position for detection or other processing.

[0046] The specific structure of the suspension structure is not limited in this application. In one embodiment of the present invention, the suspension structure includes a mounting column 22, a moving rod 23 and a rotating structure 24. The mounting column 22 extends along the second direction, one end of the mounting column 22 is fixedly installed to the supporting seat 1, and the mounting column 22 is penetrated by an assembly hole along the first direction; the moving rod 23 extends along the first direction, one end of the moving rod 23 passes through the assembly hole and is connected to the mounting column 22; the rotating structure 24 has two movable parts that can rotate relative to each other, and the two movable parts are respectively connected to the other end of the moving rod 23 and the end of the arc support member 21, so that the end of the arc support member 21 can rotate relative to the moving rod 23.

[0047] One end of the moving rod 23 is connected to the mounting column 22, and the other end is connected to the movable part, so that the position of the movable part in the first direction can be changed. In some embodiments, the moving rod 23 is provided with a thread, and one end of the moving rod 23 is provided with a nut after passing through the assembly hole. By adjusting the position of the nut, the position of the moving rod 23 is adjusted, thereby achieving the position adjustment of the movable part in the first direction. Through the combination of the rotating structure 24 and the moving rod 23, the end of the arc support 21 can have a greater degree of freedom. When the lens a is converted from horizontal placement to vertical placement, the arc support 21 will be quickly tightened under the weight of the lens a itself, and the parts of the arc support 21 close to its two ends will be straightened, and the straightened parts can be tangent to the outer edge of the lens a, thereby reducing the clamping stress on the lens a.

[0048] It should be noted that one end of the moving rod 23 connected to the mounting post 22 is provided with an external thread, and after the moving rod 23 passes through the assembly hole, it cooperates with a nut to fix the relative position of the moving rod 23 and the mounting post 22 .

[0049] The specific structure of the rotating structure 24 is not limited in this application. A structure with rotational motion at both ends can be adopted, such as a Hooke's hinge, wherein the two ends of the Hooke's hinge are respectively connected to the other end of the moving rod 23 and the end of the arc support member 21, so that the end of the arc support member 21 can rotate relative to the moving rod 23.

[0050] In one embodiment of the present application, the rotating structure 24 is configured as a rod end joint bearing, and the rod end of the rod end joint bearing is connected to the other end of the moving rod 23; the suspension assembly 2 also includes a transmission rod 25, and the transmission rod 25 is passed through the inner hole of the rod end joint bearing and is fixedly connected to the end of the arc support member 21.

[0051] It should be noted that the rod end joint bearing includes a rod-shaped structure and a joint bearing. The joint bearing is a spherical sliding bearing whose sliding contact surface is an inner spherical surface and an outer spherical surface, and can rotate and swing at any angle during movement. The rod end joint bearing has a large load capacity and can simultaneously withstand large radial loads and bidirectional axial loads; it also has a certain automatic self-aligning ability. When there is a misalignment between the support shaft and the shaft housing hole, the bearing can still work normally, thereby improving the operating accuracy and stability of the equipment.

[0052] In one embodiment, one end of the moving rod 23 connected to the end of the rod end joint bearing is provided with an external thread, and the rod end of the rod end joint bearing is provided with a threaded hole to cooperate with the external thread of the moving rod 23 to achieve the connection between the moving rod 23 and the joint bearing. In other embodiments, the connection between the moving rod 23 and the joint bearing can also be achieved by other methods, and the present invention is not limited here.

[0053] The rotating structure 24 is configured as a rod end joint bearing, and is fixedly connected to the end of the arc support 21 through a transmission rod 25. When the lens a is converted from horizontal placement to vertical placement, the arc support 21 will be quickly tightened under the weight of the lens a itself, and because the rod end joint bearing can swing at an angle, the parts of the arc support 21 close to its two ends will be straightened, and the straightened parts will be tangent to the outer edge of the lens a. At this time, even if there are installation and processing errors in the fixed position and angle of the arc support 21, the lens a can be self-adaptively held, thereby reducing the clamping stress on the lens a.

[0054] Furthermore, the ends of the arc-shaped support member 21 are provided with two through holes in the second direction, and the two ends of the transmission rod 25 pass through the two through holes respectively to connect the ends of the arc-shaped support member 21. The middle of the transmission rod 25 is passed through the inner hole of the rod end joint bearing, and the two ends of the transmission rod 25 are passed through the two through holes respectively. The middle of the transmission rod 25 bears the force in one direction transmitted by the rod end joint bearing, and the two ends of the transmission rod 25 receive the force in the opposite direction transmitted by the arc-shaped support member 21. Such a configuration can make the force on the transmission rod 25 more balanced and reasonable, so that it can maintain the state of extending in the second direction during the movement, so as to achieve better transmission.

[0055] It should be noted that the via hole can be formed by extending the main structure of the arc support member 21, or can be formed by a structure fixedly connected at the end of the arc support member 21. The present invention is not limited here. Preferably, the via hole is formed by extending the main structure of the arc support member 21, which has higher tensile strength and better safety.

[0056] In order to fix the lens a more conveniently and stably, the limiting assembly 4 also includes a limiting rod 42, which is extended along the second direction and fixedly mounted on the bearing seat 1 at one end, and the limiting block 41 is provided with a guide hole along the second direction, and the limiting block 41 is slidably sleeved on the outside of the limiting rod 42 along the second direction to adjust the position of the limiting block 41 in the second direction, so that the part of the limiting block 41 extending into the installation area is pressed against the other mirror surface of the lens a. When it is necessary to fix the two end surfaces of the lens a, the limiting block 41 is rotated so that its part is located on the side of the lens a away from the bearing seat 1 in the second direction, and then the limiting block 41 is slid so that its part abuts against the mirror surface of the lens a away from the bearing seat 1, so as to fix the lens a.

[0057] Furthermore, the limit block 41 has an end face arranged in the second direction, and a side face adjacent to the end face, the side face is provided with a through hole, and the through hole is communicated with the guide hole; the limit assembly 4 also includes a stop member 43, the stop member 43 has a stop end and a twisting end arranged relatively, the stop end is rotatably installed in the through hole, and the operator twists the twisting end to drive the stop end to move to press against the limit rod 42, so that the limit block 41 cannot rotate or slide relative to the limit rod 42, that is, the two are fixed; the operator twists the twisting end to drive the stop end to move to separate from the limit rod 42, at this time, the limit block 41 can rotate and slide relative to the limit rod 42.

[0058] Specifically, the through hole can be set as a threaded hole, and the stop member 43 can be set as a screw whose end can be screwed, and the other end of the screw is pressed against the limiting rod 42 by screwing the screw, so that the stop end can move to press against the limiting rod 42, or the stop end can move to separate from the limiting rod 42.

[0059] The limit assembly 4 also includes a ring 44, which is arranged around the other end of the limit rod 42 to limit the limit block 41 from sliding out of the limit rod 42. The setting of the ring 44 prevents the limit block 41 from being blocked when it moves on the limit rod 42 in a direction away from the bearing seat 1, so as to prevent the limit block 41 from completely separating from the limit rod 42 due to erroneous operation when adjusting the position, so that the limit block 41 can only move outside the limit rod 42 and between the ring 44 and the bearing seat 1. The ring 44 is arranged to be detachable, so that the staff can remove the ring 44 to release the restriction on the limit block 41 when it is necessary to disassemble the limit assembly 4 or replace the limit block 41. The movement of the limit block 41 is limited to prevent the limit block 41 from separating from the limit rod 42 due to erroneous operation during the process of adjusting the position, so that the staff needs to reassemble the limit block 41, which increases the working steps. The increase in working steps will increase the operating time and reduce the working efficiency. Reducing erroneous operations will reduce the factors affecting the working efficiency, thereby improving the working efficiency. Preferably, the annular member 44 may be configured as a retaining ring.

[0060] The support assembly 3 can be arranged on a side of the support seat 1 close to the installation area to support the mirror surface of the lens a close to the support seat 1. Specifically, in one embodiment, the support assembly 3 includes a plurality of screws, each of which is threadedly installed to the support seat 1 along the second direction, and the nut of each screw protrudes from the support seat 1 and extends into the installation area to press against a mirror surface of the lens a. The support assembly 3 can not only provide support for the lens a when the lens a is placed flat, but also support the lens a close to the mirror surface of the support seat 1 when the lens a is placed vertically. Before placing the lens a in the installation area, the length of the nut of each screw protruding from the support seat 1 can be adjusted so that it can fit the lens a. It can be understood that flexible materials such as foam can be placed between the support assembly 3 and the lens a and between the support seat 1 and a to serve as a buffer when loading the lens a.

[0061] The arc-shaped support member 21 is configured as a steel belt. The arc-shaped steel belt combines the firmness of steel with the flexibility of the arc, so that it can withstand greater pressure and tension and provide better adaptability to the lens A. The steel belt as a whole has stability and durability, so that it can maintain excellent performance in various harsh environments.

[0062] The plurality of stopper assemblies 4 are provided along the circumference of the installation area. The plurality of stopper assemblies 4 can provide support at multiple positions along the circumference of the lens a. For example, in one embodiment, refer to Figure 1Four limit assemblies 4 are provided. When the lens a is in a vertical placement state, two limit assemblies 4 are spaced apart above the lens a, and two limit assemblies 4 are spaced apart below the lens a (not shown in the figure) to limit the movement of the lens a, thereby fixing the lens a.

[0063] When the supporting seat 1 is configured as a supporting plate, since the lens fixing device 100 needs to be suitable for different devices for processing lenses a or detecting lenses a, a plurality of hanging holes are symmetrically arranged on the supporting seat 1 of the lens fixing device 100. The symmetrically arranged plurality of hanging holes facilitate the staff to assemble the lens fixing device 100 to different lens a processing devices or lens a detecting devices to fix the lens fixing device 100. At the same time, a plurality of handles 5 are symmetrically arranged on the supporting seat 1 to facilitate the staff to move the lens fixing device 100 through the handles 5.

[0064] The lens fixing device 100 also includes a support plate 61 and a plurality of support connecting rods 62, each of the support connecting rods 62 extending along the second direction, one end of each of the support connecting rods 62 connected to a side of the supporting seat 1 close to the installation area, and the other end connected to the support plate 61, so that when the first direction is the up and down direction, the supporting plate can be erected on the platform to be placed.

[0065] by Figure 1 Taking the embodiment shown as an example, the fixing process of lens a is described:

[0066] First, place the bearing seat 1 on the mounting platform, with the first direction being horizontal and the second direction being vertical, and then install the bearing seat 1, and then install 8 screws made of polytetrafluoroethylene on the guard plate, and adjust the 8 screws to make them equal in height. At this time, place soft materials such as foam in the mounting area to prepare for buffering for the subsequent loading of the lens a;

[0067] The mounting column 22 and the limiting rod 42 are installed at the corresponding positions of the bearing seat 1, the limiting block 41 is slidably sleeved on the limiting rod 42, and the retaining ring is inserted into the groove at the end of the limiting rod 42 to achieve the fixed installation of the retaining ring at the end of the limiting rod 42;

[0068] The transmission rod 25 is passed through a through hole, the inner hole of the rod end joint bearing and another through hole in sequence, and a nut is screwed in from the end of the transmission rod 25 and sleeved on both ends of the transmission rod 25 to prevent the stainless steel belt from sliding; one end of the moving rod 23 with external threads is screwed into the rod end of the rod end joint bearing. The stainless steel belt is installed and ready for use;

[0069] Place the optical lens a in the center and flatly on the 8 screws, then place the assembled stainless steel belt on the side surface of the optical lens a, pass the other end of the moving rod 23 with external threads through the assembly hole in the mounting column 22, adjust the stainless steel belt to a suitable position, pre-fix the moving rod 23 with a nut, and finally rotate the limit block 41 to adjust the relative position with the lens a to make it close to the surface of the lens a, and then lock the limit block 41 with the stopper 43;

[0070] Install the supporting connecting rod 62 and the handles 5 on both sides on the mounting seat, and adjust the lens fixing device 100 so that the first direction is up and down, and the second direction is horizontal to place the supporting seat 1; at this time, the stainless steel belt will be quickly tightened under the gravity of the lens a itself. Since the two ends of the stainless steel belt are suspended in a tangential direction to the outer edge of the lens a, and the rod end joint bearing can swing at an angle, if there are installation and processing errors in the position and angle of the steel belt, it can also adaptively hold the lens a, thereby reducing the clamping stress on the lens a.

[0071] The nut sleeved on the fine-tuning moving rod 23 is used to adjust the height of the end of the steel belt to adjust the center of the lens a to a preset position.

[0072] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lens fixing device, characterized in that: The lens fixing device comprises: A bearing seat, wherein the bearing seat is formed with a mounting area for mounting the lens; A suspension assembly, comprising an arc-shaped support member, the concave and convex surfaces of the arc-shaped support member are arranged opposite to each other along a first direction, and are used to be suspended in the installation area of ​​the bearing seat, and the arc-shaped support member is used to support the side surface of the lens; A support assembly, comprising at least one support portion, wherein the support portion is movably mounted to the bearing seat along the second direction, and is used to extend into the mounting area to press against a mirror surface of the lens during movement; and The limiting assembly comprises a limiting block which is rotatably mounted to the bearing seat along an axis extending in the second direction, and is used for partially extending into the mounting area to press against the other mirror surface of the lens during the movement.

2. The lens fixing device according to claim 1, characterized in that: The suspension assembly also includes a suspension structure, which has a movable end and a fixed end that are relatively arranged in a first direction, the fixed end of the suspension structure is fixedly mounted to the bearing seat, and the movable end of the suspension structure is connected to the arc-shaped support member.

3. The lens fixing device according to claim 2, characterized in that: Two suspension structures are provided, and the arc-shaped support member has two ends in the arc-shaped extension direction thereof, and the movable ends of the two suspension structures are respectively connected to the two ends of the arc-shaped support member.

4. The lens fixing device according to claim 3, characterized in that: The suspension structure comprises: A mounting column extending along the second direction, one end of the mounting column being fixedly mounted to the bearing seat, and the mounting column being provided with an assembly hole along the first direction; A moving rod is extended along a first direction, one end of which passes through the assembly hole and is connected to the mounting column; and The rotating structure has two movable parts that can rotate relative to each other. The two movable parts are respectively connected to the other end of the moving rod and the end of the arc-shaped support member, so that the end of the arc-shaped support member can rotate relative to the moving rod.

5. The lens fixing device according to claim 4, characterized in that: The rotating structure is configured as a rod end joint bearing, and the rod end of the rod end joint bearing is connected to the other end of the moving rod; The suspension assembly also includes a transmission rod, which is inserted into the inner hole of the rod end joint bearing and fixedly connected to the end of the arc-shaped support member.

6. The lens fixing device according to claim 5, characterized in that: The end of the arc-shaped support member is provided with two through holes opposite to each other in the second direction, and the two ends of the transmission rod pass through the two through holes respectively to connect the end of the arc-shaped support member.

7. The lens fixing device according to claim 1, characterized in that: The limit assembly also includes a limit rod, which extends along the second direction and has one end fixedly mounted to the supporting seat. The limit block is provided with a guide hole along the second direction. The limit block is slidably mounted on the outside of the limit rod along the second direction to adjust the position of the limit block in the second direction, so that the part of the limit block extending into the installation area presses against the other mirror surface of the lens.

8. The lens fixing device according to claim 7, characterized in that: The limit block has an end face arranged in the second direction, and a side face adjacent to the end face, the side face is provided with a through hole, and the through hole is connected to the guide hole; The limit assembly also includes a stop member, which has a stop end and a twisting end that are relatively arranged. The stop end is rotatably installed in the penetration hole, and the twisting end is used for an operator to twist to drive the stop end to move to press against the limit rod, or to drive the stop end to move to separate from the limit rod.

9. The lens fixing device according to claim 7, characterized in that: The limiting assembly further comprises an annular member, which is disposed around the other end of the limiting rod to limit the limiting block from sliding out of the limiting rod.

10. The lens fixing device according to claim 1, characterized in that: The supporting assembly comprises a plurality of screws, each of which is threadedly mounted to the bearing seat along the second direction, and a nut of each screw protrudes from the bearing seat and extends into the mounting area to press against a mirror surface of the lens; and / or, The arc-shaped support member is configured as a steel belt; and / or, The limiting components are provided in plurality along the circumference of the installation area.

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