A device and process method for improving the centering and alignment efficiency of optical elements

Abstract

The invention discloses a device and a process method for improving the centering and adjustment efficiency of an optical element, belonging to the technical field of optical-mechanical adjustment. The device and the process method belong to the technical field of optical-mechanical adjustment. The device comprises a chassis component, an adjustment component, a clamping component and a transfer component. The chassis component is located at the bottom of the device and is used for installing other components and realizing initial positioning. The adjustment component is installed on the chassis component and is used for five-dimensional adjustment of the optical element. The clamping component is installed on the adjustment component and is used for clamping the optical element. The transfer component is installed on the chassis component and contacts the optical element in the middle and is used for transferring the adjusted position information of the optical element. The initial position accuracy of the optical element is improved by the chassis component and the clamping component to avoid difficulty in image finding. The height adjustment and posture adjustment are decoupled by the adjustment component to avoid mutual interference in the adjustment process. The centering and adjustment quality and the equipment utilization rate are improved by a composite bonding process. The invention can realize the centering and adjustment and bonding of the optical element in the centering process with high efficiency, high precision and high stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical-mechanical alignment, and particularly relates to a device and a process method for improving the centering alignment efficiency of optical elements, which can realize the alignment and bonding of the centering process of optical elements with high efficiency, high precision and high stability. Background Art

[0002] Optical elements are parts made of materials such as optical glass and optical crystals and are used for optical imaging and other functions. In engineering applications, optical elements need to be assembled in a mechanical structure to form an optical-mechanical system. With the improvement of the accuracy requirements of optical-mechanical systems, the centering alignment process is gradually applied to the assembly process of optical elements, which puts forward requirements for the alignment efficiency and reliability of optical elements.

[0003] Currently, for the centering alignment of optical elements, most are carried out by technicians with rich operating experience. Under the condition that the center deviation of the lens is monitored in real time by a reflection type center deviation measuring instrument, the position and pose are adjusted by directly contacting the side of the lens, and the lens is adjusted according to the display on the screen, reducing the radius of the circle drawn by the center of the optical surface of the lens to the required accuracy range. This manual centering alignment process has the following disadvantages: on the one hand, the initial position positioning accuracy of the optical element is poor, exceeding the adjustment range of the center deviation measuring instrument, resulting in difficult image finding or exceeding the adjustment range that the equipment can adjust; on the other hand, the adjustment process is mutually coupled, and the adjustment needs to be carried out repeatedly, and the operation process is cumbersome and time-consuming; in addition, the commonly used bonding process methods are prone to problems such as out-of-tolerance adjustment accuracy and surface scratching during the glue cleaning process, and there are quality and safety risks.

[0004] Therefore, it is necessary to invent a device and a process method for improving the centering alignment efficiency of optical elements, which can realize the alignment and bonding of the centering process of optical elements with high efficiency, high precision and high stability. Summary of the Invention

[0005] Technical Problems to be Solved

[0006] In order to avoid the deficiencies of the prior art, the present invention provides a device and a process method for improving the centering alignment efficiency of optical elements. By means of the chassis component and the clamping component, the initial position accuracy of the optical element is improved, avoiding problems such as difficult image finding when the optical element is tilted too much and insufficient adjustment amount of the equipment. By means of the adjustment component, the height adjustment and the attitude adjustment are decoupled, avoiding mutual interference during the adjustment process; by adopting a composite bonding process, combining the advantages of fast glue and slow glue, the centering alignment quality is improved, and the long-term occupation of the center deviation measuring equipment is also avoided, improving the equipment utilization rate.

[0007] The technical solution of the present invention is: a device for improving the efficiency of centering and adjusting optical elements, comprising a chassis component 1, an adjustment component 2, a clamping component 3 and a transfer component 4, wherein the chassis component 1 is located at the bottom of the centering and adjusting device, and is used to install other components and achieve initial positioning; the adjustment component 2 is installed on the chassis component 1, and is used for five-dimensional adjustment of the optical element; the clamping component 3 is installed on the adjustment component 2, and is used for clamping the optical element; the transfer component 4 is installed on the chassis component 1, and is in contact with the optical element in the middle, and is used to transfer the adjusted position information of the optical element.

[0008] A further technical solution of the present invention is: the chassis component 1 includes a chassis 1a, a first column 1b, a second column 1c, a first support block 1d, a second support block 1e, and a base 1f; the chassis 1a is located at the bottom of the chassis component 1 and is installed on the turntable of the center deviation measuring equipment, and a first through hole is provided at the center position, and the first through hole is used to observe the imaging of the lower surface of the optical element; the first column 1b and the second column 1c are installed on the end faces on both sides of the first through hole of the chassis 1a; the first support block 1d, the second support block 1e, and the base 1f are distributed along the circumference of the first through hole and are all installed on the end face of the chassis 1a, the first support block 1d and the second support block 1e are adjacent, and the two support blocks form a V-shaped positioning surface facing the side wall of the first through hole to realize the positioning of the adjustment component 2; the base 1f is provided with a top plate 1h on the side wall facing the first through hole, and a screw 1g is installed on the base 1f perpendicular to the top plate 1h, and the radial positioning and fixing of the adjustment component 2 is completed by the axial force of the screw 1g on the top plate 1h.

[0009] A further technical solution of the present invention is: the adjustment component 2 includes a reference disk 2a, a one-dimensional adjustment platform 2b, a transfer block 2c, a four-dimensional adjustment platform 2d and a tray 2e; the reference disk 2a is a disk with an axial cut edge, a second through hole is opened in the center, the reference disk 2a is positioned on its cylindrical surface by the V-shaped positioning surfaces of the first support block 1d and the second support block 1e, and is fixed by the top plate 1h against the cut edge surface, and the second through hole is located directly above the first through hole after fixation; the one-dimensional adjustment platform 2b is eccentrically mounted on the reference disk 2a, and is used to adjust the Z-direction position of the optical element, the four-dimensional adjustment platform 2d is mounted on the one-dimensional adjustment platform 2b through the transfer block 2c, and is used to adjust the two-dimensional displacement of the optical element in the X and Y directions and the angle around the X and Y directions; the tray 2e is fixed on the four-dimensional adjustment platform 2d, and is used to install the clamping component 3, a third through hole is provided in the center, and the third through hole is located directly above the second through hole after the tray 2e is installed;

[0010] A further technical solution of the present invention is: the clamping component 3 includes a clamping tray 3a and a set screw 3b; the clamping tray 3a is fixed on the upper surface of the tray 2e, a fourth through hole is provided at the center of the clamping tray 3a, the fourth through hole is located directly above the third through hole, two bosses are provided on the end faces of the clamping tray 3a on both sides of the fourth through hole, the optical element 3c is placed between the two bosses, the inner side surface of one side of the boss facing the optical element 3c is consistent with the shape of the outer tangent edge of the optical element 3c, so as to ensure the position accuracy of the optical element 3c, and a set screw 3b is provided on the other side of the boss, the set screw 3b is screwed in along its axial direction and presses and fixes the optical element 3c;

[0011] A further technical solution of the present invention is: the adapter component 4 includes an L-shaped structural member 4a, a first adapter 4b, a second adapter 4c, a first support ear 4d and a second support ear 4e, one side arm of the L-shaped structural member 4a is fixed to the upper part of the first column 1b, and the end of the other side arm is fixed to the upper part of the second column 1c, a protruding frame is provided in the middle of the L-shaped structural member 4a, the first adapter 4b and the second adapter 4c are respectively installed on both sides of the protruding frame, the first adapter 4b is installed with the first support ear 4d, and the second adapter 4c is installed with the second support ear 4e, and the shapes of the first support ear 4d and the second support ear 4e are consistent with the side shape of the optical element 3c corresponding to their positions.

[0012] A further technical solution of the present invention is that the first ear 4d and the second ear 4e maintain a 0.5 mm gap with the side of the optical element 3c for injecting adhesive.

[0013] A further technical solution of the present invention is: the first column 1b and the second column 1c are provided with screw holes and pin holes for installing the L-shaped structural member 4a, the chassis 1a is provided with screw holes and pin holes for installing the first leaning block 1d, the second leaning block 1e and the base 1f, and the first column 1b, the second column 1c and the chassis 1a are combined and processed to ensure the hole position accuracy of the pin holes on the first column 1b, the second column 1c and the chassis 1a.

[0014] A further technical solution of the present invention is: a threaded through hole is provided on the base 1f perpendicular to the top plate 1h, a screw 1g is threadedly connected in the threaded through hole, two light holes are provided in parallel on both sides of the threaded through hole, springs 1j are respectively passed through the two light holes, one end of the spring is fixed on the top plate 1h, and the other end is fixed to the base 1f through a cylinder 1i to prevent the top plate 1h from tilting when it is ejected.

[0015] A further technical solution of the present invention is: a process method for improving the centering and adjustment efficiency of optical elements using the centering and adjustment device of the present invention, the steps are as follows:

[0016] Step 1, fixing the optical element 3c;

[0017] Complete the assembly of the chassis component 1. Install the chassis 1a on the turntable of the center deviation measuring device. Adjust the position of the chassis component 1 with a dial indicator. After completion, tighten the screws as a reference.

[0018] Complete the assembly of the adjustment component 2. Fix the clamping tray 3a on the tray 2e of the adjustment component 2. Then install the adjustment component 2 with the clamping tray 3a on the chassis 1a and screw in the screw 1g to tighten the adjustment component 2.

[0019] Install the optical element 3c on the clamping tray 3a and screw in the set screw 3b to fix it. At this time, the angle of the optical element 3c around the Z-axis is determined.

[0020] Step 2: Adjust the optical element 3c.

[0021] According to the circle-drawing situation of the spherical center image on the screen of the center deviation measuring device, adjust the four-dimensional adjustment table 2d to ensure that the circle-drawing amounts of the spherical center images on the two outer surfaces of the optical element 3c are within the indicators. Then adjust the one-dimensional adjustment table 2b to ensure that the height value from the vertex of the optical element 3c to the chassis 1a meets the indicator requirements. At this time, the X, Y, Z directions and the angles around the X and Y axes of the optical element 3c are determined, that is, the six-dimensional attitude of the optical element 3c is determined.

[0022] Step 3: Bond the optical element 3c.

[0023] Assemble the adapter component 4. Install the L-shaped structural member 4a of the adapter component 4 on the first column 1b and the second column 1c of the chassis component 1. Pour UV glue at both ends of the gap between the first ear 4d and the second ear 4e and the optical element 3c respectively. After ultraviolet curing, pour silicone rubber into the middle gap. After the adhesive is cured, at this time, the position information of the optical element 3c is transferred to the adapter component 4. Remove the adapter component 4. Through the position information of the optical element 3c recorded by the adapter component 4, the spatial positions of multiple groups of optical elements 3c are determined for the opto-mechanical system assembly.

[0024] A further technical solution of the present invention is that the UV glue in the step 3 is removed by hydrolysis after the opto-mechanical system assembly is completed.

[0025] Beneficial effects

[0026] The beneficial effects of the present invention are as follows: the present invention is a device for improving the centering and adjustment efficiency of an optical element, the chassis component 1 is fixed on the turntable of a center deviation measuring device, and does not move after being adjusted into place, and can be used as a common chassis, and the "V"-shaped positioning surface formed by the first leaning block 1d and the second leaning block 1e, and the jacking device designed on the base 1f can ensure the position accuracy of the adjustment component 2, and further ensure that the optical element 3c has a high initial position accuracy after being installed on the clamping tray 3a, prevent the deviation from being too large and exceeding the adjustment range of the turntable of the center deviation measuring device, and reduce the difficulty of the adjustment operation;

[0027] In the adjustment component 2 of the present invention, a one-dimensional adjustment platform 2b is used to adjust the Z-direction position of the optical element 3c, and a four-dimensional adjustment platform 2d is used to adjust the two-dimensional displacement of the optical element 3c in the X and Y directions and the angle around the X and Y directions. The one-dimensional adjustment platform 2b and the four-dimensional adjustment platform 2d are connected by a transfer block 2c, so that the Z-direction adjustment and the two-dimensional displacement adjustment in the X and Y directions and the angle adjustment around the X and Y directions can be independent of each other, mutual interference can be avoided during the adjustment process, and the adjustment process does not need to be repeated;

[0028] The clamping tray 3a of the present invention is provided with a boss structure which contacts the side surface of the optical element 3c, and the fourth through hole on the bottom surface thereof realizes line contact with the lower surface of the optical element 3c, which is then fixed by the set screw 3b. The positioning method of the outer surface line contact and the side surface contact ensures the fixing accuracy of the optical element 3c, and avoids the adjustment amount exceeding the adjustment range of the turntable of the center deviation measuring device when the fixing deviation of the optical element 3c is too large, thereby reducing the difficulty of the adjustment operation.

[0029] The bonding of the optical element 3c of the present invention adopts a composite bonding process, using hydrolyzable UV glue (photosensitive glue) and silicone rubber, combining the rapid fixing characteristics of UV glue and the weather resistance of silicone rubber. After filling with glue, it allows immediate transportation without the need for complete curing on the center deviation measuring equipment, which reduces the equipment occupancy time and improves the centering and adjustment efficiency.

[0030] The present invention improves the initial position accuracy of the optical element 3c through the chassis component 1 and the clamping component 3, avoids the problems of difficulty in finding the image and insufficient equipment adjustment when the optical element 3c is tilted too much; decouples the height adjustment and the posture adjustment through the adjustment component 2, avoids mutual interference in the adjustment process; adopts a composite bonding process, combines the advantages of fast glue and slow glue, and improves the centering and adjustment quality and efficiency: after the optical machine system is assembled, the UV glue is hydrolyzed and removed, avoiding scratches on the surface during the glue cleaning process, and with the help of the fast curing property of the UV glue, the lens can be quickly fixed after the optical element 3c is installed and adjusted, the adapter component 4 can be transferred outside the equipment, and the silica gel slowly solidifies, and the equipment can be freed up for continued use, thereby avoiding long-term occupation of the center deviation measurement equipment and improving equipment utilization.

[0031] The device and process method for improving the centering and alignment efficiency of optical elements according to the present invention can achieve the assembly and bonding in the centering process of optical elements with high efficiency, high precision and high stability, and realize the high-precision assembly of optical elements. Description of the Drawings

[0032] Figure 1 It is a schematic diagram of the overall composition of the device for improving the centering and alignment efficiency of optical elements according to the present invention;

[0033] Figure 2 It is a schematic diagram of the composition of the chassis component in the device of the present invention;

[0034] Figure 3 It is a schematic diagram of the composition of the adjustment component in the device of the present invention;

[0035] Figure 4 It is a schematic diagram of the composition of the clamping component in the device of the present invention;

[0036] Figure 5 It is a schematic diagram of the composition of the adapter component in the device of the present invention;

[0037] Figure 6 It is a schematic diagram of the composite bonding process in the device of the present invention;

[0038] Figure 7 It is a schematic diagram of the process method flow in the device of the present invention;

[0039] Description of the reference numerals: 1. Chassis component 1a. Chassis 1b. First column 1c. Second column 1d. First abutting block 1e. Second abutting block 1f. Base 1g. Screw 1h. Top plate 1i. Cylinder 1j. Spring 2. Adjustment component 2a. Reference disc 2b. One-dimensional adjustment table 2c. Adapter block 2d. Four-dimensional adjustment table 2e. Tray 3. Clamping component 3a. Clamping tray 3b. Set screw 3c. Optical element 3d. Screw 3e. Pin 4. Adapter component 4a. L-shaped structural member 4b. First adapter 4c. Second adapter 4d. First ear 4e. Second ear 4f. Pin 4g. Screw 5. UV glue 6. Silicone rubber. Detailed Embodiments

[0040] The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0042] Referring to Figure 1-7 , a device for improving the centering and alignment efficiency of optical elements according to the present invention includes a chassis component 1, an adjustment component 2, a clamping component 3, and an adapter component 4. The chassis component 1 is located at the bottom of the centering and alignment device and is used to install other components and achieve initial positioning; the adjustment component 2 is installed on the chassis component 1 and is used for five-dimensional adjustment of the optical element; the clamping component 3 is installed on the adjustment component 2 and is used for clamping the optical element; the adapter component 4 is installed on the chassis component 1 and is in contact with the optical element through an adhesive in the middle, and is used to transfer the adjusted position information of the optical element.

[0043] The chassis component 1 includes a chassis 1a, a first column 1b, a second column 1c, a first stop 1d, a second stop 1e, and a base 1f; the chassis 1a is located at the bottom of the centering and alignment device, and a first through hole is provided at the central position for observing the imaging of the lower surface of the optical element through a center deviation measuring device; the first column 1b and the second column 1c are installed on the end faces on both sides of the first through hole of the chassis 1a, and screw holes and pin holes are provided on the first column 1b and the second column 1c for installing the adapter component 4; the first stop 1d, the second stop 1e, and the base 1f are distributed circumferentially along the first through hole and are all installed and fixed on the end face of the chassis 1a by screws and pins. The first stop 1d and the second stop 1e are adjacent, and the side walls of the two stops facing the first through hole form a V-shaped positioning surface to achieve the positioning of the adjustment component 2; a top plate 1h is installed on the side wall of the base 1f facing the first through hole, and a threaded through hole is provided perpendicular to the top plate 1h on the base 1f. A screw rod 1g is threadedly connected in the threaded through hole, and two light holes are provided in parallel on both sides of the threaded through hole. Springs 1j are respectively inserted into the two light holes. One end of the spring is fixed on the top plate 1h, and the other end is fixed on the side of the base 1f facing away from the top plate 1h through a cylinder 1i. The radial positioning and fixing of the adjustment component 2 are completed through the axial force of the screw rod 1g on the top plate 1h. The restraint of the two springs on the top plate 1h can not only fix the top plate 1h on the base 1f, but also prevent the top plate 1h from tilting when it is ejected, ensuring the reliability of the positioning.

[0044] The adjustment component 2 includes a reference disk 2a, a one-dimensional adjustment table 2b, a transfer block 2c, a four-dimensional adjustment table 2d, and a tray 2e; the reference disk 2a is a cylindrical disk with an axial cutting edge, and its outer cylindrical surface and cutting edge surface are reference surfaces with guaranteed machining accuracy. A second through hole is opened at the center of the reference disk 2a. The reference disk 2a positions its cylindrical surface through the V-shaped positioning surfaces of the first stop block 1d and the second stop block 1e, and is fixed by pressing the cutting edge surface with the top plate 1h. After fixation, the second through hole is located directly above the first through hole; the one-dimensional adjustment table 2b is eccentrically installed on the reference disk 2a and is used to adjust the Z-direction position of the optical element. The four-dimensional adjustment table 2d is installed on the one-dimensional adjustment table 2b through the transfer block 2c and is used to adjust the two-dimensional displacement of the optical element in the X and Y directions and the angles around the X and Y directions. The Z-direction adjustment, the two-dimensional displacement adjustment in the X and Y directions, and the angle adjustment around the X and Y directions are independent of each other, and interference can be avoided during the adjustment process; the tray 2e is fixed on the four-dimensional adjustment table 2d and is used to install the clamping component 3. A third through hole is provided at its center. After the tray 2e is installed, the third through hole is located directly above the second through hole;

[0045] The clamping component 3 includes a clamping tray 3a and a set screw 3b; the clamping tray 3a is fixed on the upper surface of the tray 2e through screws 3d and pins 3e. A fourth through hole is provided at the center of the clamping tray 3a. The fourth through hole is located directly above the third through hole. Two convex platforms are provided on the end faces of the clamping tray 3a on both sides of the fourth through hole. The optical element 3c is placed between the two convex platforms. The inner side of one convex platform facing the optical element 3c has the same shape as the outer cutting edge of the optical element 3c to ensure the position accuracy of the optical element 3c, which is a positioning convex platform. A set screw 3b is provided on the other convex platform. The set screw 3b is screwed along its axis and presses and fixes the optical element 3c; the structure of the clamping tray 3a depends on the shape of the optical element 3c. Its positioning convex platform ensures fitting with the outer cutting edge of the optical element 3c, which is a surface contact. Its fourth through hole ensures fitting with the lower surface of the optical element 3c, which is a line contact. The position accuracy of the optical element 3c is ensured by the combination of surface contact and line contact;

[0046] The transfer component 4 includes an L-shaped structural member 4a, a first transfer member 4b, a second transfer member 4c, a first ear 4d, and a second ear 4e. One side arm of the L-shaped structural member 4a is fixed to the upper part of the first column 1b, and the end of the other side arm is fixed to the upper part of the second column 1c, and both are positioned and connected through a pin 4f and a screw 4g. The L shape of the L-shaped structural member 4a is beneficial to avoiding installation errors such as rotation; a protruding frame is provided in the middle of the L-shaped structural member 4a. The first transfer member 4b and the second transfer member 4c are respectively installed on both sides of the protruding frame. The first ear 4d is installed on the first transfer 4b, and the second ear 4e is installed on the second transfer 4c. The shapes of the first ear 4d and the second ear 4e are both the same as the outer shape of the side of the optical element 3c corresponding to their positions, and a 0.5 mm gap is maintained with the side of the optical element 3c for pouring adhesive.

[0047] The technological method for centering and alignment using the device for improving the centering and alignment efficiency of optical elements described in the present invention is as follows:

[0048] Step 1: Fix the optical element 3c;

[0049] Install the assembled chassis component 1 on the turntable of the center deviation measurement device. Adjust the position of the chassis component 1 through a dial indicator. After completion, fix the chassis 1a with screws and use it as a reference, which will not be moved during subsequent adjustments;

[0050] Complete the assembly of the adjustment component 2. Fix the clamping tray 3a on the tray 2e of the adjustment component 2. Then install the adjustment component 2 with the clamping tray 3a on the chassis 1a and screw in the screw 1g to fasten the adjustment component 2;

[0051] Install the optical element 3c on the clamping tray 3a and fix it by screwing in the set screw 3b; at this time, the angle of the optical element 3c around the Z-axis is determined;

[0052] Step 2: Adjust the optical element 3c;

[0053] According to the circle-drawing situation of the ball center image on the screen of the center deviation measurement device, adjust the four-dimensional adjustment table 2d to ensure that the circle-drawing amounts of the ball center images on the two outer surfaces of the optical element 3c are within the specified indexes. Then adjust the one-dimensional adjustment table 2b to ensure that the height value from the vertex of the optical element 3c to the chassis 1a meets the specified requirements. At this time, the X, Y, Z directions and the angles around the X and Y axes of the optical element 3c are determined, that is, the six-dimensional attitude of the optical element 3c is determined;

[0054] Step 3: Bond the optical element 3c;

[0055] Bond the optical element 3c using a composite bonding process. Attach Figure 4The optical element 3c shown is a doublet lens composed of two lenses. First, assemble the adapter component 4, and then install the L-shaped structural component 4a of the adapter component 4 on the first column 1b and the second column 1c of the chassis component 1. When the chassis component 1 is adjusted, the position of the installed adapter component 4 is determined and unique; then, pour UV glue 5 at both ends of the gaps between the first ear 4d, the second ear 4e and the optical element 3c respectively. After ultraviolet curing, pour silicone rubber 6 into the middle gap. After the adhesive is cured, the position information of the optical element 3c is transferred to the adapter component 4 at this time; remove the adapter component 4, and perform the opto-mechanical system assembly according to the position information of the optical element 3c recorded by the adapter component 4. Since the UV glue is a fast glue and cures quickly, but does not meet the product usage requirements, and the silicone glue is a slow glue and cures slowly, but has good weather resistance and good environmental adaptability. The composite bonding process combines the rapid curing of the UV glue and the weather resistance of the silicone rubber. After the opto-mechanical system assembly is completed, the UV glue is removed by hydrolysis.

[0056] The specific use of the present invention for opto-mechanical system assembly: When the pouring of the silicone rubber is completed, the position information of the optical element 3c is transferred to the adapter component 4. Loosen the set screw 3b on the clamping component 3, remove the screw 4g and the pin 4f that fix the adapter component 4, and move the adapter component 4 together with the optical element 3c away. After the silicone rubber is cured, the opto-mechanical system assembly can be performed according to the position information of the optical element 3c recorded by the adapter component 4; when multiple sets of optical elements 3c need to be assembled, use multiple sets of adapter components 4 to cooperate with the corresponding clamping components 3 for centering adjustment, and according to the position information of the corresponding optical elements 3c recorded by the multiple sets of adapter components 4, the spatial positions of the multiple sets of optical elements 3c are determined. Through the position correlation between the multiple sets of adapter components 4, the opto-mechanical system assembly is carried out. After the opto-mechanical system assembly is completed, the UV glue is removed by hydrolysis to ensure the stability of the assembly.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirits of the present invention.

Claims

1. A device for improving the centering and alignment efficiency of optical elements, characterized in that: It includes a chassis component (1), an adjustment component (2), a clamping component (3) and an adapter component (4). The chassis component (1) is located at the bottom of the centering alignment device and is used to install other components and achieve initial positioning. The adjustment component (2) is installed on the chassis component (1) and is used for five-dimensional adjustment of the optical element. The clamping component (3) is installed on the adjustment component (2) and is used for clamping the optical element. The adapter component (4) is installed on the chassis component (1), contacts the optical element in the middle, and is used to transfer the adjusted position information of the optical element. The adapter component (4) includes an L-shaped structural member (4a), a first adapter (4b), a second adapter (4c), a first ear (4d) and a second ear (4e). One side arm of the L-shaped structural member (4a) is fixed to the upper part of the first column (1b), and the end of the other side arm is fixed to the upper part of the second column (1c). There is a protruding frame in the middle of the L-shaped structural member (4a). The first adapter (4b) and the second adapter (4c) are respectively installed on both sides of the protruding frame. The first ear (4d) is installed on the first adapter (4b), and the second ear (4e) is installed on the second adapter (4c). The shapes of the first ear (4d) and the second ear (4e) are both consistent with the outer shape of the side of the corresponding optical element (3c) at their positions. Both the first ear (4d) and the second ear (4e) maintain a 0.5 mm gap from the side of the optical element (3c) for pouring adhesive.

2. The device for improving the centering and alignment efficiency of an optical element according to claim 1, characterized in that: The chassis component (1) includes a chassis (1a), a first column (1b), a second column (1c), a first abutting block (1d), a second abutting block (1e) and a base (1f). The chassis (1a) is located at the bottom of the chassis component (1) and is installed on the turntable of the center deviation measuring device. There is a first through hole in the center position, and the first through hole is used to observe the imaging of the lower surface of the optical element. The first column (1b) and the second column (1c) are installed on the end faces on both sides of the first through hole of the chassis (1a). The first abutting block (1d), the second abutting block (1e) and the base (1f) are distributed circumferentially along the first through hole and are all installed on the end face of the chassis (1a). The first abutting block (1d) and the second abutting block (1e) are adjacent, and the side walls of the two abutting blocks facing the first through hole form a V-shaped positioning surface to achieve the positioning of the adjustment component (2). A top plate (1h) is installed on the side wall of the base (1f) facing the first through hole, and a screw (1g) is vertically installed on the base (1f) and perpendicular to the top plate (1h). The radial positioning and fixing of the adjustment component (2) are completed by the axial force of the screw (1g) on the top plate (1h).

3. The device for improving the centering and alignment efficiency of an optical element according to claim 2, characterized in that: The adjustment component (2) includes a reference disk (2a), a one-dimensional adjustment stage (2b), an adapter block (2c), a four-dimensional adjustment stage (2d), and a tray (2e); the reference disk (2a) is a disk with an axial cutting edge, and a second through hole is opened at its center. The reference disk (2a) positions its cylindrical surface through the V-shaped positioning surfaces of the first abutting block (1d) and the second abutting block (1e), and is fixed by pressing the cutting edge surface with the top plate (1h). After fixation, the second through hole is directly above the first through hole; the one-dimensional adjustment stage (2b) is eccentrically installed on the reference disk (2a) and is used to adjust the Z-direction position of the optical element. The four-dimensional adjustment stage (2d) is installed on the one-dimensional adjustment stage (2b) through the adapter block (2c) and is used to adjust the two-dimensional displacement of the optical element in the X and Y directions and the angles around the X and Y directions; the tray (2e) is fixed on the four-dimensional adjustment stage (2d) and is used to install the clamping component (3). A third through hole is provided at its center. After the tray (2e) is installed, the third through hole is directly above the second through hole.

4. The device for improving the centering and alignment efficiency of an optical element according to claim 3, characterized in that: The clamping component (3) includes a clamping tray (3a) and a set screw (3b); the clamping tray (3a) is fixed on the upper surface of the tray (2e). A fourth through hole is provided at the center of the clamping tray (3a). The fourth through hole is directly above the third through hole. Two bosses are provided on the end faces of the clamping tray (3a) on both sides of the fourth through hole. The optical element (3c) is placed between the two bosses. The inner side of one boss facing the optical element (3c) has the same shape as the outer cutting edge of the optical element (3c) to ensure the position accuracy of the optical element (3c). A set screw (3b) is provided on the other boss. The set screw (3b) is screwed along its axial direction to press and fix the optical element (3c).

5. The device for improving the centering and alignment efficiency of an optical element according to claim 2, characterized in that: Screw holes and pin holes are provided on the first upright (1b) and the second upright (1c) for installing the L-shaped structural member (4a). Screw holes and pin holes are provided on the chassis (1a) for installing the first abutting block (1d), the second abutting block (1e), and the base (1f). The first upright (1b), the second upright (1c), and the chassis (1a) are combined and processed to ensure the hole position accuracy of the pin holes on the first upright (1b), the second upright (1c), and the chassis (1a).

6. The device for improving the centering and alignment efficiency of an optical element according to claim 2, characterized in that: Threaded through holes perpendicular to the top plate (1h) are provided on the base (1f). The screw rod (1g) is threadedly connected in the threaded through holes. Two optical holes are provided in parallel on both sides of the threaded through holes. Springs (1j) are respectively passed through the two optical holes. One end of the spring is fixed on the top plate (1h), and the other end is fixed on the base (1f) through a cylinder (1i) to prevent the top plate (1h) from tilting when it is pushed out.

7. A process method for improving the centering and alignment efficiency of an optical element using the device described in claim 4, the steps are as follows: Step 1: Fix the optical element (3c); Complete the assembly of the chassis component (1). Install the chassis (1a) on the turntable of the center deviation measuring device. Adjust the position of the chassis component (1) with a dial indicator. After completion, tighten the screws as a reference; Complete the assembly of the adjustment component (2). Fix the clamping tray (3a) on the tray (2e) of the adjustment component (2), then install the adjustment component (2) equipped with the clamping tray (3a) on the chassis (1a), and screw in the screw (1g) to fasten the adjustment component (2). Install the optical element (3c) on the clamping tray (3a) and screw in the set screw (3b) to fix it. At this time, the angle of the optical element (3c) around the Z-axis is determined. Step 2: Adjust the optical element (3c). According to the circle-drawing situation of the ball center image on the screen of the centricity measurement device, by adjusting the four-dimensional adjustment table (2d), ensure that the circle-drawing amounts of the ball center images on the two outer surfaces of the optical element (3c) are within the specifications. Then adjust the one-dimensional adjustment table (2b) to ensure that the height value from the vertex of the optical element (3c) to the chassis (1a) meets the specification requirements. At this time, the X, Y, Z directions and the angles around the X and Y axes of the optical element (3c) are determined, that is, the six-dimensional attitude of the optical element (3c) is determined. Step 3: Bond the optical element (3c). Assemble the adapter component (4). Install the L-shaped structural member (4a) of the adapter component (4) on the first column (1b) and the second column (1c) of the chassis component (1). Pour UV glue at both ends of the gap between the first ear (4d) and the second ear (4e) and the optical element (3c). After ultraviolet curing, pour silicone rubber into the middle gap. After the adhesive is cured, at this time, the position information of the optical element (3c) is transferred to the adapter component (4). Remove the adapter component (4), and through the position information of the optical element (3c) recorded by the adapter component (4), the spatial positions of multiple groups of optical elements (3c) are determined for the opto-mechanical system assembly.

8. The process method according to claim 7, characterized in that: The UV glue in Step 3 is removed by hydrolysis after the opto-mechanical system assembly is completed.

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