Light fluctuation imaging optical lens assembly centering processing method
Through a centering processing method, the problem of high difficulty in centering processing of optical wave imaging optical lens components is solved through a centering processing method, and the unity of optical lens components and mechanical mounting references is achieved, simplifying the assembly process and improving overall efficiency.
Patent Information
- Application Number
- CN202510202508.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-04-15
AI Technical Summary
The centering processing of optical wave imaging optical lens assembly is difficult, and the prior art is difficult to effectively unify the reference of optical lens assembly and the reference of mechanical mounting parts, resulting in difficulty in imaging adjustment, especially when space is limited.
A centering processing method for optical wave imaging optical lens assembly is adopted, including pre-processing, installation, debugging, processing and cutting and packaging steps. By using centering instruments, centering lathes, tooling, rangefinders and grating scales, etc., the centering and imaging quality of the lens components are ensured.
The unified standard of optical lens assembly and mechanical mounting parts is achieved, the difficulty of assembly between lenses and frames is reduced, the assembly process is simplified, the dependence on the technical requirements of assembly personnel is reduced, and the overall assembly efficiency and product competitiveness are improved.
Smart Images
Figure CN119820713A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of optical lens component processing, and in particular to a centering processing method for a light wave imaging optical lens component. Background Art
[0002] The optical lens assembly is the main component in the entire assembly system. Since the optical lens assembly needs to be assembled in the system, the final imaging quality mainly depends on the processing quality of the lens and mechanical parts themselves. However, this processing method is only for the subsequent processing of qualified parts, and it is assumed that the assembled optical lens assembly meets the technical requirements; the optical axis reference of the lens and the mechanical assembly reference are unified, because optical indicators and mechanical indicators are two completely different fields in terms of processing methods and detection methods. Optical lens processing is mainly grinding processing, and the processing process mainly guarantees the optical indicators of the mirror surface and the outer contour size indicators. The processing method of mechanical structural parts is mainly mechanical cutting, which mainly guarantees mechanical indicators; the assembly and debugging process of the optical lens assembly installed in the mechanical system, because the assembly process is limited to a small debugging range, it is impossible to adjust the imaging to the theoretical requirements. In addition, some products cannot be designed with adjustment mechanisms due to space limitations, and the space only allows simple equipment of optical lens assemblies and mechanical assemblies.
[0003] Therefore, it is particularly important to unify the optical lens assembly benchmark and the mechanical mounting benchmark throughout the entire product production process. In order to improve the imaging index of the entire product system and ensure the unification of the optical lens assembly benchmark and the mechanical mounting benchmark, the traditional solution is to improve the processing quality of optical lenses and mechanical parts, improve processing accuracy and matching level, which will inevitably increase processing costs and assembly difficulty, thereby raising the technical requirements for assembly personnel, requiring strict professional technical training before they can operate. This type of operational training requires a long period of actual hands-on practice to pass, and the training time is relatively long. Summary of the invention
[0004] In view of this, the present invention aims to propose a centering processing method for a light wave imaging optical lens component, so as to solve the technical problem that the centering processing of the light wave imaging optical lens component is difficult.
[0005] To achieve the above object, the present invention adopts the following technical solution: a centering processing method for a light wave imaging optical lens assembly, comprising the following steps: S1. Pre-processing: preparing the optical lens components, tools and processing equipment to be processed, and inspecting and protecting the optical lens components; S2, installing the optical lens assembly, and installing the protected optical lens assembly on the processing equipment; S3, debugging, first roughly find the optical axis and then fine-tune the optical axis, so that the machining allowance of the test lens assembly meets the machining size requirements; S4, processing of optical lens components, rough turning the debugged optical lens components first, then meet the centering B test and then fine turning, and inspect and record the fine turned optical lens components; S5, cutting and packaging, cutting and deburring the qualified optical lens components in S4, cleaning the appearance and then inspecting before packaging.
[0006] Furthermore, the processing equipment includes two centering instruments, a centering lathe is provided between the centering instruments, the centering lathe is provided with a tooling, a distance meter and a grating ruler, the centering instrument close to the centering lathe is arranged on a controller, and a computer displays and records the processing process.
[0007] Furthermore, the protection of the optical lens assembly after inspection is specifically to stick a protective film on the lens surface after inspecting the appearance of the optical lens assembly.
[0008] Furthermore, the step S2 is specifically that the tooling screws are installed on the adjustable fixture of the centering lathe, and then the lens assembly is screwed to the tooling in a threaded connection manner to ensure that the end face of the lens assembly is accurately positioned and prevent the thread from being further tightened during the processing. The corresponding tool is correctly selected and installed on the tool holder to ensure that the tool movement is not loose or interfered.
[0009] Furthermore, the tooling dynamically adjusts the eccentric translation and roll of the front and rear mirror optical axes of the optical lens assembly so that the front and rear mirror focal optical axes coincide with the rotating mechanical axis of the centering lathe.
[0010] Furthermore, the step S3 is specifically as follows: roughly find the optical axis, adjust the optical axis of the main shaft end, i.e. the optical reference mirror, to be less than ±0.005mm, use an adjustable wrench to adjust the first four screws of the tooling to make up-down and forward and backward translation adjustments in the radial direction; the rear four screws are used for pitch and roll adjustments. Find the cross cursor image and make its jump less than ±0.005mm; fine-tune the optical axis: adjust the processing end, i.e. the mechanical reference optical axis, to be less than ±0.005mm, and make micro-adjustments while taking into account that the rear end mirror optical axis does not change, adjust the front end optical axis, and use an adjustable wrench to adjust the processing end optical axis, which is a micro-adjustment; at this time, adjust the first four screws of the fixture to make up-down and forward and backward translation adjustments in the radial direction, and the rear four screws to make pitch and heading adjustments. The eight screws need to take into account micro-adjustments with each other, and finally achieve that the cursor jump of both end surfaces is less than ±0.005mm.
[0011] Furthermore, the centering B test is to check whether the image jump of the sphere center on both sides of the screen is less than ±0.005mm.
[0012] Furthermore, the front end face is fine-machined to a qualified T1 value using a fine-turning tool SDHCR 1212, the rear end face is fine-machined to a qualified T1 value using a rear fine-turning tool ISO2936-2 2.0mm / 0.6Nm, the T2 value is measured using a micrometer, and the outer diameter T3 value is fine-machined to a qualified value using a fine-turning tool SDHCR 1212.
[0013] Furthermore, the detection is specifically to check the jitter of the sphere center image on both sides of the screen after fine turning, and the jitter of the sphere center image on both sides is less than ±0.005mm, use a grating scale micrometer to detect T1 value, use a micrometer to detect T3 value, and use a micrometer to detect T2 value.
[0014] Furthermore, the cutting is specifically performed using a cutting knife MX22-2E150N01-GD8 WSM23S to achieve the surface roughness requirement of the drawing, and the actual measured value of T2 is recorded.
[0015] Beneficial effects: The unification of the lens optical datum and the mechanical installation datum realizes the unification of the optical datum and the mechanical datum of the entire system, which can appropriately reduce the processing accuracy and matching level of optical lenses and mechanical structural parts such as frames. The centering processing of light wave imaging optical lens components is carried out after the lenses and frames are bonded. This can eliminate part-level errors and reduce the difficulty of assembling frames and lens barrels. It can be completed with a simple trial fit, which reduces the technical requirements for assembly personnel, improves the overall assembly efficiency, greatly reduces assembly and debugging time, reduces production costs, and improves product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a flowchart of a centering processing method for a light wave imaging optical lens assembly according to the present invention; Figure 2 This is a front view of the equipment in the centering processing method of the light wave imaging optical lens component described in the present invention; Figure 3 A top view of the equipment in the centering processing method of the optical lens assembly for light wave imaging described in the present invention; Figure 4 This is a schematic diagram of tooling in a method for centering a light wave imaging optical lens assembly described in the present invention.
[0017] In the figure: controller 1; centering device 2; centering lathe 3; adjustment tool 4; distance meter 5; grating ruler 6; computer 7. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.
[0019] It should be noted that the descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", and "bottom" are all defined based on the relationship between the orientations or positions shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure must be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.
[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0021] Referring to the accompanying drawings, this embodiment is described, which provides a method for centering a light wave imaging optical lens assembly, comprising the following steps: S1. Pretreatment: prepare the optical lens components, tools and processing equipment to be processed, and inspect and protect the optical lens components.
[0022] Prepare the optical lens components to be processed, prepare the required tooling, fixtures, processing tools according to the size of the lens components, prepare quality record documents, component turnover boxes, etc.; Check the appearance of the optical lens assembly. There should be no obvious deformation. The lens surface protection is in place. Ensure that the state of the parts before processing meets the clamping and processing requirements. Check that the instruments, tooling, and inspection tools are within the inspection period and in good condition. Check the surface treatment of the frame. Check the lens surface. If the protective film is abnormal, there may be excess material between the lens. A protective film is adhered to the surface of the lens. If there is a risk of aluminum chips entering the space between the lens and the frame during processing, cotton paper double-sided tape should be used to fill the space for protection.
[0023] S2. Install the optical lens assembly, and install the protected optical lens assembly on the processing equipment.
[0024] The tooling 4 is installed on the adjustable fixture of the centering lathe 3 with screws, and then the lens assembly is screwed to the tooling 4 in a threaded connection manner to ensure that the end face of the lens assembly is accurately positioned to prevent the thread from being tightened during the processing. Correctly select the corresponding tool and install it on the tool holder to ensure that the tool movement is not loose or interfered, and then adjust the tooling 4 through the spindle connection to clamp the optical lens assembly.
[0025] S3. Debugging: first roughly find the optical axis and then fine-tune the optical axis to make the machining allowance of the test lens assembly meet the machining size requirements.
[0026] Roughly find the optical axis, adjust the spindle end, i.e. the optical reference mirror, to a runout of less than ±0.005mm, use an adjustable wrench to adjust the first four screws of tooling 4 in the radial direction for up and down, front and back translation adjustment, and the rear four screws for pitch and roll adjustment, find the cross cursor image, and make its runout less than ±0.005mm; Fine-tune the optical axis, adjust the processing end, i.e. the mechanical reference optical axis, to less than ±0.005mm. Micro-adjust and take into account that the rear end mirror optical axis remains unchanged. Adjust the front end optical axis. Use an adjustable wrench to adjust the processing end optical axis. This is micro-adjustment. At this time, adjust the first four screws of the fixture to adjust the up and down, front and back translation in the radial direction, and the last four screws to adjust the pitch and heading. The eight screws need to take into account micro-adjustments to each other, and finally achieve a cursor jump of less than ±0.005mm on both end surfaces. The adjustment tool 4 dynamically adjusts the translation and roll of the eccentric optical axis of the front and rear mirrors of the optical lens assembly, so that the front and rear mirror focus optical axes coincide with the rotating mechanical axis of the centering lathe 3. When dynamically adjusting the eccentric optical axis of the front and rear mirrors of the optical lens assembly, the front and rear mirrors of the optical lens are centered using two centering instruments 2 respectively. While dynamically adjusting the eccentric optical axis of the front and rear mirrors of the optical lens assembly, the eccentricity of the cross axis of the front and rear mirrors of the optical lens can be displayed in real time on the computer 7, and visual cursor adjustment can be realized. It is required to detect whether each processing allowance is consistent with the drawing, detect whether the state of the lens assembly is consistent with the image jump, use a dial indicator to measure the outer circle jump of the lens combination, and detect that the processing allowance in this state should meet the processing size requirements.
[0027] S4, Optical lens assembly processing, the optical lens assembly after debugging is first rough-turned, then meets the centering B test and then fine-turned, and the optical lens assembly after fine-turning is inspected and recorded.
[0028] The processing of optical lens components is a rotation of parts, and the computer 7 displays the dynamic turning of the optical axis cursor, and displays the change of the optical axis state at all times; Use the rough turning tool SDHCR 1212 to rough-machine the front end face; leave an allowance of 0.15~0.3mm, use the rear rough turning tool ISO2936-2 2.0mm / 0.6Nm to rough-machine the rear end face, leave a cut-off excess, use the rough turning tool SDHCR 1212 to rough-machine the outer diameter, leave an allowance of 0.15~0.3mm, check that the ball center image runout on both sides of the screen is less than ±0.005mm, use the fine turning tool SDHCR 1212 to fine-machine the front end face until the T1 value is qualified, use the rear fine turning tool ISO2936-2 2.0mm / 0.6Nm to fine-machine the rear end face until it is qualified, use a micrometer to measure the T2 value, use the fine turning tool SDHCR 1212 to fine-machine the outer diameter T3 value until it is qualified; After fine turning, check the image jump of the sphere center on both sides of the screen. The image jump of the sphere center on both sides is less than ±0.005mm. Use grating micrometer to detect T1 value, which is qualified according to the drawing and "Lens Component Edge Processing Data Sheet". Use micrometer to detect T3 value, which is qualified according to the drawing and "Lens Component Edge Processing Data Sheet". Use micrometer to detect T2 value, which is qualified according to the drawing and "Lens Component Edge Processing Data Sheet". When the optical lens surface is aspherical, after adjusting the eccentricity of the optical axis of the front and rear mirror of the optical lens component, use rangefinder 5 to re-measure the aspherical surface of the optical lens, process the matching size and sagittal height of the optical lens component, use micrometer and grating ruler 6 to measure respectively, and record the actual measured values of T1 and T3 in the lens combination processing process table.
[0029] S5, cutting and packaging, cutting and deburring the qualified optical lens components in S4, cleaning the appearance and then inspecting before packaging.
[0030] Use the cutting knife MX22-2E150N01-GD8 WSM23S to cut according to the "Lens Component Edge Processing Data Table" to meet the surface roughness requirements of the drawing, and record the T2 measured value in the "Lens Combination Processing Table". Pay attention to protection and gently hold the outer edge of the frame with your hand to prevent the lens component from falling and damaging the workpiece when cutting. Stop when the silicone rubber is exposed, and use a surgical blade to cut the workpiece; After the spindle end is cut off, there will be a small amount of aluminum chips left at the cut-off point, which needs to be handled in time. Select the corresponding spring chuck to fix it according to the T3 value. Pay attention to the moderate clamping force to prevent clamping deformation. The drawing needs to retain the right angle. Pay attention to the size of the burr. After fixing the lens assembly, use the SCGT09T304-PM2 WK1 chamfering tool to turn and remove the burrs; Clean the appearance and pay attention to protecting the lens surface to avoid scratches; According to the inspection requirements and inspection methods, the accompanying documents and records should be complete. The dimensional accuracy can be checked by checking the measured dimensions of T1, T2, and T3 recorded in the edge processing data table of the lens assembly of the component, which should meet the corresponding technical requirements in the table. Visual inspection should be carried out to see whether the appearance quality of the lens meets the requirements. The frame should be free of obvious defects, burrs, sharp edges, etc. It is required to use transfer boxes for turnover, and avoid movement of parts when packing to prevent damage to the lens and frame mounting surfaces.
[0031] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.
Claims
1. A method for centering a light wave imaging optical lens assembly, characterized in that: The following steps are involved: S1. Pre-processing: preparing the optical lens components, tools and processing equipment to be processed, and inspecting and protecting the optical lens components; S2, installing the optical lens assembly, and installing the protected optical lens assembly on the processing equipment; S3, debugging, first roughly find the optical axis and then fine-tune the optical axis, so that the machining allowance of the test lens assembly meets the machining size requirements; S4, processing of optical lens components, rough turning the debugged optical lens components first, then meet the centering B test and then fine turning, and inspect and record the fine turned optical lens components; S5, cutting and packaging, cutting and deburring the qualified optical lens components in S4, cleaning the appearance and then inspecting before packaging.
2. The method for centering a light wave imaging optical lens assembly according to claim 1, characterized in that: The processing equipment comprises two centering instruments (2), a centering lathe (3) is arranged between the centering instruments (2), a tooling (4), a distance meter (5) and a grating ruler (6) are arranged on the centering lathe (3), the centering instrument (2) close to the centering lathe (3) is arranged on a controller (1), and a computer (7) displays and records the processing process.
3. The method for centering a light wave imaging optical lens assembly according to claim 1, characterized in that: The protection of the optical lens assembly after inspection specifically includes sticking a protective film on the surface of the lens after inspecting the appearance of the optical lens assembly.
4. The method for centering a light wave imaging optical lens assembly according to claim 2, characterized in that: Specifically, the tooling (4) is installed on the adjustable fixture of the centering lathe (3) by screws, and then the lens assembly is screwed onto the tooling (4) in a threaded connection manner to ensure that the end face of the lens assembly is accurately positioned and to prevent the thread from being further tightened during the processing. The corresponding tool is correctly selected and installed on the tool holder to ensure that the tool movement is not loose or interfered.
5. According to the method for centering a wave-light imaging optical lens assembly as described in claim 2, the tooling (4) dynamically adjusts the eccentric translation and roll of the front and rear mirror optical axes of the optical lens assembly so that the front and rear mirror focal optical axes coincide with the rotating mechanical axis of the centering lathe (3).
6. The method for centering a light wave imaging optical lens assembly according to claim 1, characterized in that: The step S3 is specifically to roughly find the optical axis, adjust the optical axis of the main shaft end, i.e. the optical reference mirror, to be less than ±0.005mm, and use an adjustable wrench to adjust the first four screws of the tooling to make up-down and forward and backward translation adjustments in the radial direction; the rear four screws are used for pitch and roll adjustments. Find the cross cursor image and make its jump less than ±0.005mm; fine-tune the optical axis, adjust the processing end, i.e. the mechanical reference optical axis, to be less than ±0.005mm, and make micro-adjustments while taking into account that the rear end mirror optical axis does not change, adjust the front end optical axis, and use an adjustable wrench to adjust the processing end optical axis, which is a micro-adjustment; at this time, adjust the first four screws of the fixture to make up-down and forward and backward translation adjustments in the radial direction, and the rear four screws to make pitch and heading adjustments. The eight screws need to take into account micro-adjustments with each other, and finally reach a point where the cursor jump of both end surfaces is less than ±0.005mm.
7. The method for centering a light wave imaging optical lens assembly according to claim 1, characterized in that: The centering B test is to check whether the image fluctuation of the sphere center on both sides of the screen is less than ±0.005mm.
8. The method for centering a light wave imaging optical lens assembly according to claim 7, characterized in that: The described finishing tool SDHCR 1212 is used to finish the front end face to a qualified T1 value, the rear finishing tool ISO2936-2 2.0mm / 0.6Nm is used to finish the rear end face to a qualified value, the micrometer is used to measure the T2 value, and the finishing tool SDHCR 1212 is used to finish the outer diameter T3 value to a qualified value.
9. A method for centering a light wave imaging optical lens assembly according to claim 8, characterized in that: The detection is specifically to check the image jump of the center of the ball on both sides of the screen after fine turning, and the image jump of the center of the ball on both sides is less than ±0.005mm, use a grating ruler (6) micrometer to detect the T1 value, use a micrometer to detect the T3 value, and use a micrometer to detect the T2 value.
10. A centering processing method for a light wave imaging optical lens assembly according to claim 9, wherein the cutting is specifically performed using a cutting knife MX22-2E150N01-GD8 WSM23S, the surface is cut to meet the surface roughness requirements of the drawing, and the actual measured value of T2 is recorded.