An assembly structure, an assembly method and a laser imager for an optical lens

Abstract

The application relates to the technical field of laser lenses, and provides an assembly structure for an optical lens, an assembly method and a laser imager, which are used for mounting the optical lens on a laser emitter, wherein the assembly structure comprises: a lens support used for connecting the optical lens; a lens micro-motion element connected on the lens support in a left-right direction through a first adjusting element; and an interface adapter arranged in the lens micro-motion element in an axial direction through a second adjusting element and used for connecting the laser emitter. The application solves the problem that the optical system optical axis of the optical lens and the beam center axis of a beam generator of the laser emitter exist center deviation in the prior art, and the laser imaging quality is not high.

Description

Technical Field

[0001] This application relates to the field of laser lens technology, and more specifically, to an assembly structure, assembly method and laser imager for optical lenses. Background Technology

[0002] Laser technology has wide applications in current industrial production, mainly including laser processing and laser imaging. As the requirements of laser imaging applications increase, the demands for image quality also rise. The center deviation between the optical axis of the lens optical system and the beam center axis of the laser emitter plays a crucial role in the quality of laser imaging.

[0003] In existing technologies, when image quality requirements are low, the high precision of the optical lens itself eliminates the need to consider adjustments for mounting the lens onto the laser emitter after its fabrication. Current technologies typically involve eccentric adjustments to the optical lens itself, without addressing the offset itself. This results in a persistent center misalignment between the optical axis of the lens's optical system and the beam center axis of the laser emitter's beam generator, leading to poor laser imaging and low image quality.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] The purpose of this application is to provide an assembly structure, assembly method and laser imager for optical lenses, which solves the problem in the prior art that there is a center deviation between the optical axis of the optical system of the optical lens and the beam center axis of the beam generator of the laser emitter, resulting in poor laser imaging quality.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] On one hand, this application provides an assembly structure for an optical lens, used to mount an optical lens onto a laser emitter, wherein the assembly structure includes:

[0008] Lens mount, used to connect optical lenses;

[0009] The lens micro-motion component is adjustablely connected to the lens support in the left-right direction via the first adjustment component.

[0010] An interface adapter is axially adjustable within the lens micro-motion component via a second adjustment component and is used to connect to a laser emitter.

[0011] In an optional embodiment, the lens bracket includes: a bracket base, on which a limiting slot is provided, the limiting slot extending in the left-right direction;

[0012] The lens micro-motion component includes: a micro-motion component seat, which is connected to the support body. The micro-motion component seat is provided with a limiting boss, which is engaged in a limiting slot so that the axis of the support body and the axis of the micro-motion component seat are flush in the vertical direction.

[0013] In an optional embodiment, the lens bracket further includes: a lens mounting portion, on which a lens mounting hole is provided, and an optical lens is disposed in the lens mounting hole;

[0014] The lens micro-motion component also includes: an adjustment support plate, which is set on the left and right sides of the micro-motion component seat, and the lens mounting part is located between the two adjustment support plates;

[0015] The first adjustment component includes: adjustment screws screwed onto the adjustment support plates on both sides, with the adjustment screws on the left and right sides respectively abutting against the left and right sides of the lens mounting part.

[0016] In an optional embodiment, the first adjusting member further includes a spring washer disposed between the inner wall of the adjusting support plate and the outer wall of the lens mounting portion, and applies elastic force to move the adjusting support plate and the lens mounting portion away from each other.

[0017] In an optional embodiment, a connector mounting hole is provided at one end of the micro-motion component seat away from the bracket seat, and a guide groove is provided on the inner wall of the connector mounting hole.

[0018] The interface adapter includes: an adapter round head, on which a positioning boss is provided;

[0019] The adapter round head is inserted into the mounting hole of the adapter, and the positioning boss is inserted into the guide groove;

[0020] The second adjustment component includes: an adjustment shim, which is fitted onto the adapter head and located between the micro-motion seat and the interface adapter. The front-to-back distance between the interface adapter and the lens bracket can be adjusted by replacing the adjustment shims of different thicknesses.

[0021] On the other hand, this application also proposes an assembly method for an optical lens, the assembly method being used in the assembly structure described above, the assembly method comprising the following steps:

[0022] Screw the optical lens onto the lens holder;

[0023] A gauge block of predetermined thickness is inserted into one of the adjustment gaps between the lens bracket and the lens micro-motion component. The size of the adjustment gaps on the left and right sides is fixed by limiting the lens bracket in the left and right directions through the first adjustment components on both sides, so that the central axis of the lens bracket and the central axis of the lens micro-motion component are aligned in the left and right directions.

[0024] The interface adapter is connected to the lens micro-motion component, and the positions of the interface adapter and the lens micro-motion component in the front-to-back direction are adjusted by replacing the second adjustment component with one of different thicknesses.

[0025] In an optional embodiment, in the step of fixing the size of the adjustment gap on the left and right sides by inserting a gauge block of predetermined thickness into one of the adjustment gaps between the lens holder and the lens micro-motion component, and by limiting the lens holder in the left and right direction through the first adjustment components on both sides:

[0026] The first adjustment component includes: an adjustment screw and a spring washer. The adjustment screw passes through the lens micro-movement and enters the adjustment gap, and abuts against the lens support.

[0027] The spring washers are located within the adjustment gap and abut against the lens bracket and the lens micro-motion component, respectively;

[0028] After defining the adjustment gap on one side using gauge blocks, the lens bracket is centered by using the adjustment screws on the left and right sides to abut against the lens bracket.

[0029] In an optional embodiment, the steps of connecting the interface adapter to the lens micro-motion and adjusting the position of the interface adapter and the lens micro-motion in the front-rear direction by replacing the second adjustment piece of different thickness are as follows:

[0030] The second adjustment component includes: adjustment shims, which are available in different thicknesses for selection;

[0031] The interface adapter is inserted into the adapter mounting hole of the lens micro-motion component through the adapter round head, and the positioning boss on the adapter round head is positioned in the guide groove on the adapter mounting hole.

[0032] Adjust the front-to-back distance between the interface adapter and the lens mount by replacing the mounting shims of different thicknesses.

[0033] In an optional embodiment, the step of screwing the optical lens onto the lens holder further includes:

[0034] Each frame component is processed separately;

[0035] The finished lens frame components are assembled into the lens barrel using assembly fixtures, and the lens frame components in the lens barrel are fixed with locking rings to form an optical lens.

[0036] In an optional embodiment, the steps of processing each frame component separately are as follows:

[0037] The lens is cured and installed into the eyeglass frame to form the eyeglass frame assembly;

[0038] Each frame component is individually center-machined to ensure that the tilt angle between the optical axis of the lens and the mechanical axis of the frame is within 20 seconds, and the offset between the optical axis of the lens and the mechanical axis of the frame is within 0.01mm.

[0039] Thirdly, this application also proposes a laser imager, including an optical lens and an assembly structure for the optical lens as described above, the optical lens being connected to a laser emitter via the assembly structure.

[0040] The beneficial effects of the assembly structure, assembly method, and laser imager for an optical lens provided in this application are at least as follows: By mounting the optical lens onto a lens holder and the laser emitter onto a connector adapter, the lens holder and the connector adapter are connected via a lens micro-motion component, thereby connecting the optical lens to the laser emitter. Through the cooperation of the optical lens and the lens micro-motion component, the central axis of the laser emitter's beam is positioned vertically, achieving high coaxiality. The lens holder is adjustable along the left-right direction via a first adjusting member. Adjusting the first adjusting member horizontally allows the optical axis of the optical lens to be aligned with the optical axis of the laser emitter in the left-right direction. The connector adapter is axially adjustable within the lens micro-motion component via a second adjusting member, thereby adjusting the position of the laser emitter and the optical lens in the front-back direction, ensuring the coincidence of the central axis of the laser emitter and the optical axis of the optical lens, and improving the clarity of the lens output image quality. This assembly structure and method not only reduces the deviation between the lens optical axis and the lens barrel mechanical axis, but also facilitates the adjustment of the deviation between the optical system optical axis of the optical lens and the beam center axis of the laser emitter after subsequent installation on optical equipment. Furthermore, the eccentricity and offset of the two axes can be adjusted simultaneously, improving the assembly accuracy of the lens, reducing the center deviation between the optical system optical axis of the optical lens and the beam center axis of the laser emitter, and improving the laser imaging quality. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A schematic diagram of an assembly structure for connecting an optical lens, provided in an embodiment of this application;

[0043] Figure 2 A cross-sectional view of an assembly structure for connecting an optical lens, provided in an embodiment of this application;

[0044] Figure 3 An exploded view of an assembly structure for an optical lens and an optical lens provided for an embodiment of this application;

[0045] Figure 4 An exploded view of an assembly structure for an optical lens provided in an embodiment of this application;

[0046] Figure 5 A cross-sectional view of an assembly fixture used in an assembly method for an optical lens, provided in an embodiment of this application;

[0047] Figure 6 This is a flowchart illustrating the steps of an assembly method for an optical lens provided in an embodiment of this application.

[0048] The following are the labeling elements in the figure:

[0049] 100. Lens bracket; 110. Bracket base; 111. Limiting slot; 120. Lens mounting part; 121. Lens mounting hole; 200. Lens micro-motion component; 210. Micro-motion component base; 211. Limiting boss; 212. Waist-shaped through hole; 213. First connecting screw; 214. Adapter mounting hole; 215. Guide groove; 216. Mounting groove; 220. Adjustment support plate; 230. First adjustment component; 231. Adjustment screw; 232. Spring washer; 300. Interface adapter Components: 310, adapter body; 311, circular through hole; 312, second connecting screw; 320, adapter round head; 321, positioning boss; 330, second adjusting component; 331, adjusting shim; 340, mating interface; 341, limiting surface; 400, optical lens; 410, lens barrel; 420, lens frame assembly; 421, lens mount; 422, lens element; 430, lens locking ring; 500, assembly fixture; 510, receiving tube; 520, push rod; 530, stop component. Detailed Implementation

[0050] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0051] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0052] Example 1

[0053] Please see Figure 1 , Figure 2 This embodiment proposes an assembly structure for an optical lens, used to precisely mount the optical lens 400 onto a laser emitter. For ease of structural description, the axis of the optical lens 400 is used as the front-back direction of each component in this embodiment. When the laser emitter is placed horizontally, the direction perpendicular to the front-back direction on the horizontal plane is the left-right direction, and the vertical direction when the laser emitter is placed horizontally is the up-down direction. It should be noted that the left-right, up-down, and front-back directions can be interchanged depending on other placement methods of the laser emitter.

[0054] Please see Figure 1 The assembly structure of this embodiment mainly includes: a lens bracket 100, a lens micro-motion component 200, and an interface adapter 300. The lens bracket 100 is used to connect an optical lens 400, which extends a certain length in the front-to-back direction and is detachably connected to the lens bracket 100. The lens micro-motion component 200 is adjustablely connected to the lens bracket 100 in the left-to-right direction via a first adjusting member 230. The interface adapter 300 is axially adjustable within the lens micro-motion component 200 via a second adjusting member 330 and is used to connect to a laser emitter. Thus, when the lens bracket 100 fixes the optical lens 400 stationary, the first adjusting member 230 finely adjusts the lens micro-motion component 200 in the left-to-right direction, changing its position relative to the lens bracket 100 in the left-to-right direction. This, in turn, causes the laser emitter to adjust its position relative to the optical lens 400 in the left-to-right direction. (See also...) Figure 1 , Figure 2 The laser emitter changes its relative position with the interface adapter 300 in the front-back direction through the second adjustment member 330, thereby adjusting the position of the laser emitter and the optical lens 400 in the front-back direction.

[0055] This embodiment provides an assembly structure for an optical lens, connecting the optical lens 400 to a laser emitter. Through the cooperation of the optical lens 400 and the lens micro-motion component 200, the central axis of the laser beam is positioned vertically, achieving high coaxiality. A lens support 100 is adjustable in the left-right direction via a first adjusting member 230. Adjusting the first adjusting member horizontally allows the optical axis of the optical lens 400 to be aligned with the optical axis of the laser emitter in the left-right direction. An interface adapter 300 is axially adjustable within the lens micro-motion component 200 via a second adjusting member 330, thereby adjusting the position of the laser emitter and the optical lens 400 in the front-back direction. This ensures the overlap between the central axis of the laser emitter and the optical axis of the optical lens 400, improving the clarity of the output image quality. This assembly structure and method not only reduces the deviation between the lens optical axis and the lens barrel mechanical axis, but also facilitates the adjustment of the deviation between the optical system optical axis of the optical lens 400 and the beam center axis of the laser emitter after subsequent installation on optical equipment. Furthermore, the eccentricity and offset of the two axes can be adjusted simultaneously, improving the assembly accuracy of the lens and reducing the center deviation that still exists between the optical system optical axis of the optical lens and the beam center axis of the laser emitter's beam generator, thereby improving the laser imaging quality.

[0056] Please see Figure 2 , Figure 3 , Figure 4 Furthermore, the lens bracket 100 specifically includes a lens mounting portion 120 and a bracket base 110. The bracket base 110 is located below the lens mounting portion 120 and is used to support the lens mounting portion 120. The lens mounting portion 120 has a lens mounting hole 121, in which the optical lens 400 is disposed. The lens mounting hole 121 can be a threaded hole, which is screwed into the external thread at the rear end of the optical lens 400. Threaded through holes are provided on the left and right sides and / or the top side of the lens mounting portion 120, and fastening screws are installed in them. When the optical lens 400 is screwed into the lens mounting hole 121, the optical lens 400 can be fixed in place by the fastening screws in the threaded through holes. The bracket base 110 has a limiting groove 111, which extends in the left and right direction. The limiting slot 111 is provided at the connection between the limiting body and the lens mounting part 120, and the bottom surface of the limiting slot 111 is flush with the upper surface of the bracket base 110.

[0057] Please see Figure 2 , Figure 3 , Figure 4The lens micro-motion component 200 specifically includes a micro-motion component seat 210 and an adjustment support plate 220. The adjustment support plate 220 is disposed on the left and right sides of the micro-motion component seat 210, and the lens mounting part 120 is located between the two adjustment support plates 220. In the specific structure, the micro-motion component seat 210 can be square. The adjustment support plate on one side of the micro-motion component seat 210 in the left and right directions is integrally formed with the micro-motion component seat 210, and the adjustment support plate on the other side is fixed to the stabilizer seat with screws. In this way, when installing the lens bracket 100 and the lens micro-motion component 200, the lens bracket 100 is first installed on the integrally formed adjustment support plate and micro-motion component seat 210, and then the adjustment support plate on the other side is installed so that the lens mounting part 120 is located between the two adjustment support plates, which makes it easier to assemble the lens bracket 100 and the lens micro-motion component 200.

[0058] The micro-actuator seat 210 can abut against the upper surface of the bracket seat 110. The micro-actuator seat 210 is provided with a limiting boss 211, which is located at the lower part of the front end of the micro-actuator seat 210. The limiting boss 211 is used to be fitted into the limiting groove 111 so that the axis of the bracket seat 110 is flush with the axis of the micro-actuator seat 210 in the vertical direction. During assembly, the vertical dimension of the limiting boss 211 matches the vertical inner wall dimension of the limiting groove 111, so that the limiting boss 211 will not move in the vertical direction within the limiting groove 111, but can move in the horizontal direction within the limiting groove 111.

[0059] To ensure the accuracy of vertical positioning, the dimensions of the limiting slot 111 need to be precise. Therefore, the vertical dimensional tolerance of the limiting slot 111 is +0.02mm / +0.04mm, with the tolerance range guaranteed to be within 0.02mm. Using the lower surface of the bracket base 110 as a reference, the parallelism of the upper and lower inner walls of the limiting slot 111 is 0.01mm. The vertical dimensional tolerance of the limiting boss 211 is -0.005mm / -0.02mm, with the tolerance range guaranteed to be within 0.015mm. Using the lower surface of the micro-motion base 210 as a reference, the parallelism of the upper and lower outer walls of the limiting boss 211 is 0.01mm. When the limiting boss 211 is fitted into the limiting slot 111, it can move in the left and right directions without getting stuck, and it can also be precisely limited in the up and down directions. This allows the optical axis of the optical lens 400 to be consistent with the optical axis of the laser emitter in the up and down directions without the need for additional adjustments.

[0060] Please see Figure 1 , Figure 3 , Figure 4Furthermore, the first adjusting component 230 specifically includes adjusting screws 231 screwed onto the adjusting support plates 220 on both sides, with the left and right adjusting screws 231 respectively abutting against the left and right sides of the lens mounting part 120. When adjusting the position in the left and right direction, the adjusting screws 231 on both sides must be turned accordingly. Loosening one side and tightening the other allows the lens mounting part 120 to be pushed by the adjusting screws 231. Due to the limiting boss 211 and the limiting slot 111, the lens mounting part 120 moves the optical lens 400 in the left and right direction, thereby adjusting the optical axis of the optical lens 400 in the left and right direction. Therefore, when the laser emitter remains stationary in the left and right direction, the optical axis of the optical lens 400, after adjustment in the left and right direction, can be aligned with the optical axis of the laser emitter, achieving the function of adjusting the optical axis in the left and right direction.

[0061] Please see Figure 1 , Figure 3 , Figure 4 Furthermore, the first adjusting component 230 specifically includes a spring washer 232. The spring washer 232 is disposed between the inner wall of the adjusting support plate 220 and the outer wall of the lens mounting part 120, and applies elastic force to keep the adjusting support plate 220 and the lens mounting part 120 away from each other. By using the form of the spring washer 232, a certain supporting force is applied to the lens mounting part 120 during the loosening or tightening of the adjusting screw 231, so that the left and right movement of the lens mounting part 120 during the adjustment process is not too large (not easily changed arbitrarily). The gap of the lens mounting part 120 in the left and right direction can be controlled to change during the adjustment process, making the movement of the lens mounting part 120 during the adjustment process more precise and achieving more accurate micro-movement.

[0062] During the adjustment of the first adjusting member 230, a gauge block of predetermined thickness (not shown in the figure) is inserted into one of the adjustment gaps between the lens support 100 and the lens micro-motion 200. The adjusting screws 231 on both sides limit the lens support 100 in the left-right direction, fixing the size of the adjustment gap on both sides, so that the central axis of the lens support 100 and the central axis of the lens micro-motion 200 are aligned in the left-right direction. Furthermore, the gauge block and the spring washer 232 are staggered and used together during adjustment. The spring washer 232 applies force to the lens mounting part 120 on both sides, making the lens mounting part 120 less prone to arbitrary movement. This allows for controlled variation of the gap between the outer wall of the lens mounting part 120 and the inner wall of the adjusting support plate 220, making it easier to insert and remove the gauge block. Especially after adjustment, when removing the gauge block, the controllable variation of the gap eliminates the need to loosen the adjusting screws 231 and remove the gauge block, ensuring that the adjusted size is achieved in one step, resulting in more precise left-right position adjustment.

[0063] Please see Figure 1 , Figure 3 , Figure 4 Furthermore, after adjustment, the positions of the lens bracket 100 and the lens micro-motion component 200 need to be fixed. Therefore, an oblong through hole 212 is provided on the micro-motion component seat 210. The oblong through hole 212 extends in the left and right direction and passes through the micro-motion component seat 210 in the front and back direction. A first connecting screw 213 is provided in the oblong through hole 212. The first connecting screw 213 passes through the oblong through hole 212 and is screwed to the rear end of the lens mounting part 120.

[0064] Please see Figure 2 , Figure 3 , Figure 4 Furthermore, a connector mounting hole 214 is provided at the end of the micro-actuator seat 210 away from the bracket seat 110, and a guide groove 215 is provided on the inner wall of the connector mounting hole 214. The interface adapter 300 specifically includes an adapter seat 310, an adapter round head 320, and a positioning boss 321 provided on the adapter round head 320. A mounting groove 216 is provided on the rear end face of the micro-actuator seat 210. The mounting groove 216 matches the outer contour of the rotating seat, so that the adapter seat 310 can be embedded into the mounting groove 216 for installation. A circular through hole 311 is provided on the adapter seat 310. By passing the second connecting screw 312 through the circular through hole 311 and screwing it onto the micro-actuator seat 210, the entire interface adapter 300 is fixed to the micro-actuator seat 210. The adapter head 320 is fixedly mounted on the adapter base 310 along the front-to-back direction. The positioning boss 321 is mounted on the outer circumference of the adapter head 320 along the front-to-back direction. The adapter head 320 is embedded in the adapter mounting hole 214, and the positioning boss 321 is embedded in the guide groove 215. By cooperating with the guide groove 215, circumferential limiting is achieved, so that the interface adapter 300 docks with the micro-motion base 210 at a fixed position in the circumferential direction. When the interface adapter 300 is connected to the laser emitter, it ensures that the position of the laser emitter in the circumferential direction does not change.

[0065] To ensure accurate fixing of the interface adapter 300 and the micro-actuator seat 210, the dimensional tolerance of the inner diameter of the adapter mounting hole 214 is +0.01mm / +0.03mm, with a tolerance range of 0.02mm; the dimensional tolerance of the adapter round head 320 is -0.005mm / -0.02mm, with a tolerance range of 0.015mm. This allows for smooth insertion of the adapter round head 320 into the adapter mounting hole 214 while maintaining a relatively good concentric relationship between the adapter mounting hole 214 and the adapter round head 320. The dimensional tolerance of the guide groove 215 in the left-right direction is +0.01mm / +0.03mm, with a tolerance range of 0.02mm. The symmetry of the inner wall of the guide groove 215 in the left-right direction is 0.01, and the straightness is 0.01. The corresponding dimensions of the positioning boss 321 have a dimensional tolerance of -0.005mm / -0.02mm in the left-right direction, with the tolerance range guaranteed to be within 0.015mm. This ensures that when the positioning boss 321 is engaged within the guide groove 215, it can move forward and backward without jamming, and also achieves precise positioning in the circumferential direction (especially the left-right direction). This allows the laser emitter to be stably positioned in the circumferential direction after being connected to the interface adapter 300, preventing movement in that direction.

[0066] Please see Figure 2 , Figure 3 , Figure 4 Furthermore, the second adjusting component 330 specifically includes an adjusting shim 331. The adjusting shim 331 is fitted onto the adapter round head 320 and located between the micro-motion seat 210 and the interface adapter 300. By replacing the adjusting shims 331 with different thicknesses, the front-to-back distance between the interface adapter 300 and the lens support 100 can be adjusted. The adjusting shims 331 are designed in various specifications, with each specification differing in size by 0.05mm. During installation and adjustment, an adjusting shim 331 of appropriate thickness is selected according to the debugging situation, thereby allowing fine-tuning along the interface adapter 300 in the front-to-back direction to adjust the position of the laser emitter and the optical lens 400 in the front-to-back direction.

[0067] Please see Figure 3 , Figure 4 At the rear end of the interface adapter 300, a mating interface 340 is also provided. The mating interface 340 can be in the form of a circular hole with positioning surfaces, for example, two limiting surfaces 341 are provided on the circular hole. The two limiting surfaces 341 are set perpendicularly, and the tolerance of the distance from the two limiting surfaces 341 to the center of the circular hole of the mating interface 340 is +0.01mm / +0.03mm. When the mating hole is mated with the laser emitter, it is limited by the two perpendicular limiting surfaces 341, so that after the laser emitter is connected to the mating hole, it is circumferentially limited and will not rotate, thus achieving precise positioning.

[0068] Example 2

[0069] Please refer to 6. This embodiment proposes an assembly method for an optical lens, used to assemble the optical lens 400 onto the assembly structure described above. The assembly method includes the following steps:

[0070] Step S100: Process each frame component separately.

[0071] Please see Figure 1 , Figure 2 In the specific process, according to the structural design of the optical lens 400, the lens frame assembly 420 includes a lens mount 421 and a lens 422 mounted thereon. Based on the function, the lens mount 421 and the lens 422 are first assembled to form the lens frame assembly 420. The optical lens 400 is assembled from these lens frame assemblies 420. Each lens frame assembly 420 is processed separately and then assembled to enable the optical lens 400 to achieve its predetermined function. Step S100 specifically includes the following steps:

[0072] Step S110: Clean all lenses and lens mounts.

[0073] In the specific process, the lens 422 is cleaned using ultrasonic cleaning. Pure water and anhydrous ethanol (in a ratio of 10:1) are poured into the ultrasonic cleaner. The lens mount 421 is made of metal. All metal parts are placed in the ultrasonic cleaner for 10 minutes, and the liquid temperature is set to 30℃~40℃. After cleaning, the lens 422 and lens mount 421 are placed on a tray (the tray is covered with gauze), dried one by one with a blow gun, and placed in a designated tray for later use.

[0074] Step S120: The lens is cured and installed into the lens mount to form a lens frame assembly.

[0075] Please see Figure 1 , Figure 2 In the specific process, different lenses 422 are installed into the corresponding lens mounts 421 and glued together to form multiple lens frame assemblies 420, and each lens frame assembly 420 is cured separately.

[0076] Step S130: Center each frame assembly separately to ensure that the central axis of the lens mount in each frame assembly is coaxial with the optical axis of the lens.

[0077] Please see Figure 1 , Figure 2In the specific process, the centering lathe is a specific type of lathe. The principle of the centering lathe is to align the optical axis of the optical lens 422 or lens assembly with the mechanical axis of the lens mount 421, turning the outer circle and end face of the lens mount 421 to ensure that the center deviation and air gap meet the accuracy requirements. During the centering lathe process, each bonded lens frame assembly 420 is individually center-machined. The tilt angle between the optical axis of the lens 422 and the mechanical axis of the lens mount 421 (lens frame) of each lens frame assembly 420 after centering is kept within 20 seconds, and the offset between the optical axis of the lens 422 and the mechanical axis of the lens frame is kept within 0.01mm. This standard is used as the coaxial standard, thereby ensuring that the central axis of the entire lens frame assembly 420 is highly coaxial with the optical axis of the lens 422. After the centering lathe is completed, a full center deviation meter is used to check the machining accuracy and ensure its accuracy.

[0078] Step S200: The processed lens frame components are assembled into the lens barrel using an assembly fixture, and the lens frame components in the lens barrel are fixed with locking rings to form an optical lens.

[0079] In the specific process, the lens frame assembly 420 with lens element 422, after being centered and edge-sewn, is sequentially installed into the lens barrel 410. A rear stop is provided at the rear end of the lens barrel 410, so that the rearmost lens frame assembly 420 abuts against the rear stop, while the other lens frame assemblies 420 abut against each other in sequence and are pressed and fixed. Finally, the front end is locked and fixed with a lens locking ring 430 to form the optical lens 400. It should be noted that a structure with a stop at the front end and a lens locking ring 430 installed at the rear end can also be used to install the optical lens 400.

[0080] Please see Figure 2 , Figure 5 The installation of each lens frame assembly 420 into the lens barrel requires the use of an assembly fixture 500. The assembly fixture 500, with a corresponding feed depth, completes the installation of the lens frame assembly 420 into the lens barrel. The assembly fixture 500 includes a receiving cylinder 510 and a push rod 520. A stop 530 is provided in the receiving cylinder 510 to limit the feed depth of the receiving cylinder 510. By aligning the front end of the receiving tube 510 with the front end of the lens barrel 410, the inner cavity of the receiving tube 510 is aligned with the inner cavity of the lens barrel 410. The lens frame assembly 420 is pre-placed in the receiving tube 510. By pushing the push rod 520, the lens frame assembly 420 in the receiving tube 510 is pushed into the lens barrel 410. Since the stop member 530 is used to limit the feed depth of the receiving tube 510, the lens frame assembly 420 can be pushed into the predetermined position in the lens barrel 410 without causing severe compression to the lens in the lens frame assembly 420. This achieves accurate installation of the lens frame assembly 420 into the predetermined position in the lens barrel 410 while effectively protecting the lens 422.

[0081] Step S300: Screw the optical lens onto the lens holder.

[0082] Please see Figure 3 , Figure 4 In the specific process, the lens bracket 100 and the lens micro-motion component 200 are assembled. The limiting slot 111 engages with the limiting boss 211 on the lens micro-motion component 200 to limit the vertical direction of the optical lens 400 on the optical device, ensuring that the central axis of the optical lens 400 and the optical axis of the laser emitter remain consistent in the vertical direction. Additionally, the first connecting screw 213 passes through the oblong through hole 212 and is screwed onto the rear end of the lens mounting part 120, thus initially fixing the lens bracket 100 and the lens micro-motion component 200. The optical lens 400 is then assembled into the lens mounting hole 121 of the lens bracket 100 via the external thread at the rear end. The lens mounting part 120 is fixed to the bracket base 110, which can be fixed to an external device, thereby securing the optical lens 400.

[0083] Step S400: Insert a gauge block of predetermined thickness into one of the adjustment gaps between the lens bracket and the lens micro-motion component. Fix the size of the adjustment gaps on the left and right sides by limiting the lens bracket in the left and right directions through the first adjustment components on both sides, so that the central axis of the lens bracket and the central axis of the lens micro-motion component are aligned in the left and right directions.

[0084] Please see Figure 3 , Figure 4 The optical lens 400 is adjusted in the left-right direction to align its central axis with the optical axis of the laser emitter. Specifically, taking the laser emitter as stationary, the lens support 100 is moved left-right. The first adjusting component 230 includes an adjusting screw 231 and a spring washer 232. The adjusting screw 231 passes through the lens micro-motion component 200, enters the adjustment gap, and abuts against the lens support 100. The specific structure and working principle of the first adjusting component 230 are described in Embodiment 1. The spring washer 232 is located within the adjustment gap and abuts against both the lens support 100 and the lens micro-motion component 200. After the adjustment gap on one side is limited by a gauge block, the lens support 100 is centered by the adjusting screws 231 on both sides abutting against the lens support 100. The gauge block is positioned to avoid the spring washer 232 and is clamped between the lens support 100 and the lens 422 micro-motion component.

[0085] Please see Figure 3 , Figure 4In the specific process, the spring washer 232 is fixed in the threaded hole of the adjustment support plate 220 by adjusting screw 231. The end of the adjusting screw 231 facing the lens mounting part 120 abuts against the outer wall of the lens mounting part 120. The gap between the lens mounting part 120 and the adjustment support plate 220 is adjusted by inserting a gauge block of a predetermined thickness (the predetermined thickness is half of the total gap between the lens mounting part 120 and the adjustment support plate 220), and then the adjusting screw 231 is tightened to fix it. A gauge block is positioned between the lens mounting portion 120 and the adjustment support plate 220, avoiding the position of the spring washer 232. Because the gauge block is positioned on one side of both the lens mounting portion 120 and the adjustment support plate 220, the single-sided gap on that side is limited to a predetermined position. The single-sided gap on the other side after tightening the adjustment screw 231 is approximately equal to the single-sided gap on the other side. This ensures that the single-sided gaps on both sides of the lens mounting portion 120 and the adjustment support plate 220 are equal, further guaranteeing that the central axis of the lens micro-motion component 200 is aligned horizontally with the central axis of the optical lens 400. Finally, by tightening the first connecting screw 213, the lens bracket 100 and the lens micro-motion component 200 are completely fixed.

[0086] Step S500: Connect the interface adapter to the lens micro-motion component, and adjust the position of the interface adapter and the lens micro-motion component in the front-to-back direction by replacing the second adjustment component with one of different thicknesses.

[0087] Please see Figure 2 , Figure 3 , Figure 4 Specifically, the second adjusting component 330 includes: an adjusting shim 331, which has different thicknesses for selection; an interface adapter 300 is fitted into the adapter mounting hole 214 of the lens micro-motion component 200 via an adapter round head 320, and the positioning boss 321 on the adapter round head 320 is positioned in the guide groove 215 on the adapter mounting hole 214; the front-to-back distance between the interface adapter 300 and the lens bracket 100 is adjusted by replacing the adjusting shims 331 of different thicknesses. For the specific design of the second adjusting component 330, please refer to the content regarding the second adjusting component 330 in Embodiment 1.

[0088] The mounting shim 331 is placed into the end groove (part of the mounting groove 216) of the adapter mounting hole 214. The end groove is located at the opening of the adapter mounting hole 214 and its inner diameter is larger than the rear end of the adapter mounting hole 214. The end groove is used to limit the positioning of the mounting shim 331. Since the interface adapter 300 is directional, during the installation of the interface adapter 300 and the lens micro-motion component 200, they are matched and positioned by the guide groove 215 on the adapter mounting hole 214 and the positioning boss 321 on the adapter round head 320, ensuring that the micro-motion component seat 210 and the interface adapter 300 are connected in only one fixed direction. Furthermore, a mating interface 340 is provided at the rear end of the interface adapter 300. The mating interface 340 uses a positioning surface on a round hole for docking and limiting, so that the laser emitter and the interface adapter 300 are also connected in only one fixed direction. This ensures that the image formed by the laser beam from the laser emitter after passing through the optical lens 400 is consistent with the position, size, and direction of the theoretical image.

[0089] After the adapter head 320 is inserted into the adapter mounting hole 214 according to the guide position through the cooperation of the positioning boss 321 and the guide groove 215, it is screwed onto the micro-actuator seat 210 by the second connecting screw 312 through the through hole 311, thus fixing the entire interface adapter 300 to the micro-actuator seat 210. The interface adapter 300 is used to connect with the laser emitter to achieve directional emission of the laser beam. The mounting shims 331 are designed in various specifications, with each specification differing in size by 0.05mm. During installation and adjustment, fine adjustments are made back and forth along the central axis of the micro-actuator seat 210. By changing the mounting shims 331 of different thicknesses, the coincidence between the central axis of the interface adapter 300 and the laser optical axis of the laser emitter is adjusted, improving the clarity of the lens output image quality.

[0090] Example 3

[0091] Please see Figure 1 , Figure 2 This application also proposes a laser imager, including an optical lens 400 and an assembly structure for the optical lens as described above. The optical lens 400 is connected to a laser emitter via the assembly structure. The assembly process employs the assembly method described above for the optical lens 400.

[0092] In summary, the assembly structure, assembly method, and laser imager proposed in this application for an optical lens achieve adjustment of the optical axis of the optical lens 400 and the laser emitter in the left-right and front-back directions through the lens bracket 100, lens micro-motion component 200, and interface adapter 300. Not only does the centering machining of the lens frame ensure the alignment accuracy of the optical axis of the lens 422 with the mechanical axis of the lens mount 421, thus reducing the deviation between the optical axis of the optical lens 400 and the mechanical axis of the lens barrel, but the deviation between the optical axis of the optical lens 400 and the laser optical axis of the laser emitter can also be adjusted within the assembly structure. This allows the tilt angle between the central axis of the optical lens 400 and the overall mechanical axis of the assembly structure to reach 1 minute, and the offset to reach 0.018 mm, significantly improving the center deviation accuracy between the optical axis of the optical lens 400 and the overall mechanical axis of the assembly structure, ultimately resulting in a significant improvement in the image quality of the optical lens 400.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An assembly structure for an optical lens, used to mount an optical lens onto a laser emitter, characterized in that, The assembly structure includes: A lens bracket, comprising a bracket base and a lens mounting portion, wherein the lens mounting portion has a lens mounting hole and the optical lens is disposed in the lens mounting hole; A lens micro-motion component includes a micro-motion component base and adjustment support plates disposed on the left and right sides of the micro-motion component base. The lens mounting part is located between the adjustment support plates on both sides. The lens micro-motion component is adjustablely connected to the lens bracket in the left-right direction via a first adjustment component. The first adjustment component includes adjustment screws respectively screwed onto the adjustment support plates on both sides, and the adjustment screws on the left and right sides abut against the left and right sides of the lens mounting part, respectively. The first adjustment component also includes a spring washer disposed between the inner wall of the adjustment support plate and the outer wall of the lens mounting part, and applies elastic force to make the adjustment support plate and the lens mounting part move away from each other. An interface adapter is provided, which is axially adjustable within the lens micro-motion component via a second adjusting component and is used to connect to the laser emitter. The micro-motion component seat has an adapter mounting hole at one end opposite to the support seat. The interface adapter includes an adapter round head, which is embedded in the adapter mounting hole. The second adjusting component includes an adjustment shim, which is sleeved on the adapter round head and located between the micro-motion component seat and the interface adapter. The front-to-back distance between the interface adapter and the lens support can be adjusted by replacing the adjustment shims of different thicknesses.

2. The assembly structure for an optical lens as described in claim 1, characterized in that, The bracket base is provided with a limiting slot, which extends in the left-right direction; The micro-motion component seat is connected to the support seat. The micro-motion component seat is provided with a limiting boss, which is engaged in the limiting slot so that the axis of the support seat is flush with the axis of the micro-motion component seat in the vertical direction.

3. The assembly structure for an optical lens as described in claim 1, characterized in that, A guide groove is provided on the inner wall of the mounting hole of the adapter; The adapter head is provided with a positioning boss; The positioning boss is embedded in the guide groove.

4. An assembly method for an optical lens, characterized in that, The assembly method is used in the assembly structure as described in any one of claims 1-3, and the assembly method includes the following steps: Screw the optical lens onto the lens holder; A gauge block of predetermined thickness is inserted into one of the adjustment gaps between the lens bracket and the lens micro-motion component. The size of the adjustment gaps on the left and right sides is fixed by limiting the lens bracket in the left and right directions through the first adjustment components on both sides, so that the central axis of the lens bracket and the central axis of the lens micro-motion component are aligned in the left and right directions. The interface adapter is connected to the lens micro-motion component, and the positions of the interface adapter and the lens micro-motion component in the front-to-back direction are adjusted by replacing the second adjustment component with one of different thicknesses.

5. The assembly method for an optical lens as described in claim 4, characterized in that, In the step of fixing the size of the adjustment gap on the left and right sides by inserting a gauge block of predetermined thickness into one of the adjustment gaps between the lens bracket and the lens micro-motion component, and by limiting the lens bracket in the left and right directions through the first adjustment components on both sides: The first adjustment component includes: an adjustment screw and a spring washer, wherein the adjustment screw passes through the lens micro-movement component and enters the adjustment gap and abuts against the lens support; The spring washer is located within the adjustment gap and abuts against the lens bracket and the lens micro-motion component, respectively; After the adjustment gap on one side is defined by the gauge block, the lens bracket is centered by abutting against the lens bracket on the left and right sides respectively.

6. The assembly method for an optical lens as described in claim 4, characterized in that, In the step of connecting the interface adapter to the lens micro-motion component and adjusting the position of the interface adapter and the lens micro-motion component in the front-to-back direction by replacing the second adjustment component of different thicknesses: The second adjustment component includes: an adjustment shim, wherein the adjustment shims have different thickness specifications for selection; The interface adapter is embedded in the adapter mounting hole of the lens micro-motion component through the adapter round head, and the positioning boss on the adapter round head is positioned in the guide groove on the adapter mounting hole. The front-to-back distance between the interface adapter and the lens bracket can be adjusted by replacing the mounting shims of different thicknesses.

7. The assembly method for an optical lens as described in claim 4, characterized in that, The procedure prior to screwing the optical lens onto the lens holder also includes: The lens is cured and installed into the eyeglass frame to form the eyeglass frame assembly; Each of the aforementioned frame components is center-machined to ensure that the tilt angle between the optical axis of the lens and the mechanical axis of the frame is within 20 seconds, and the offset between the optical axis of the lens and the mechanical axis of the frame is within 0.01mm. The processed lens frame components are assembled into the lens barrel using assembly fixtures, and the lens frame components in the lens barrel are fixed with locking rings to form an optical lens.

8. A laser imager, characterized in that, It includes an optical lens and an assembly structure for the optical lens as described in any one of claims 1-3, the optical lens being connected to a laser emitter via the assembly structure.

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