Optical part defect measuring device

Abstract

The invention provides an optical part defect measuring device, and the device comprises a carrying mechanism which comprises a carrying pedestal and a carrying table; the objective table is arranged on the objective base, the objective table is suitable for bearing a to-be-detected lens, a magnetic induction receiving module and a magnetic part are arranged on the objective table, an electromagnetic generation module is arranged on the objective base, and the electromagnetic generation module is used for generating a magnetic field at the position of the objective table; the imaging mechanism is opposite to the objective table and used for collecting images in the moving and hovering process of the objective table; the control mechanism is electrically connected with the imaging mechanism, the electromagnetic generation module and the magnetic induction receiving module; and the detection mechanism is electrically connected with the imaging mechanism. According to the optical part defect measuring device, the objective table is driven through magnetic induction, multi-degree-of-freedom movement of the objective table is achieved, and therefore the optical part defect measuring device can better meet the detection requirements of optical parts of different shapes and sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of optical detection, and particularly relates to an optical part defect measurement device. Background Art

[0002] In the optical part manufacturing industry, accurate measurement and classification of part surface defects are crucial. However, most of the existing optical surface defect measurement devices adopt manual methods, which not only increase labor costs but also limit the detection efficiency. In addition, the stages of these devices usually can only perform linear motions in the X, Y, and Z directions, and the motion modes are relatively single, unable to meet the comprehensive detection requirements of optical parts with complex shapes. Summary of the Invention

[0003] The present invention provides an optical part defect measurement device to solve the problem that the existing optical surface measurement cannot meet the comprehensive detection requirements of optical parts with complex shapes.

[0004] The present invention provides an optical part defect measurement device, including: A loading mechanism, including: a loading base and a stage; the stage is arranged on the loading base, the stage is adapted to carry the lens to be detected, a magnetic induction receiving module and a magnetic part are arranged on the stage, an electromagnetic generation module is arranged on the loading base, the electromagnetic generation module is used to generate a magnetic field at the position of the stage to drive the stage through the magnetic part, and the magnetic induction receiving module is used to obtain the magnetic field change and position change; An imaging mechanism, opposite to the stage, for taking pictures of the lens to be detected during the movement and hovering of the stage to generate an image of the lens to be detected; A control mechanism, electrically connected to the imaging mechanism, the electromagnetic generation module, and the magnetic induction receiving module, the control mechanism is used to control the electromagnetic generation module to adjust the magnetic field according to the magnetic field change and position change feedback by the magnetic induction receiving module, and control the imaging mechanism to take pictures when the imaging mechanism is perpendicular to the plane of the area where the lens to be detected is located; A detection mechanism, electrically connected to the imaging mechanism, for identifying, capturing, measuring, and comparing defects in the image to generate a classification result of the lens to be detected.

[0005] According to an optical part defect measurement device provided by the present invention, the electromagnetic generation module includes: multiple electromagnetic generation units and multiple electromagnetic region control units; A plurality of the electromagnetic generation units are arranged in a ring symmetry on the base, and the electromagnetic region control units are symmetrically distributed on the base at the central position of the base. Each of the electromagnetic region control units is electrically connected to the corresponding segments of the electromagnetic generation units, and each of the electromagnetic region control units is electrically connected to the control mechanism.

[0006] According to an optical part defect measuring device provided by the present invention, a plurality of the magnetic induction receiving modules are provided, and the plurality of magnetic induction receiving modules are sequentially arranged at intervals in a ring on the stage.

[0007] According to an optical part defect measuring device provided by the present invention, the imaging mechanism includes: An objective lens assembly, a photographing port opposite to the stage is provided at the bottom of the objective lens assembly, a first optical path and a second optical path are formed in the objective lens assembly, and both the first optical path and the second optical path communicate with the photographing port; A first light source, arranged in the first optical path, for irradiating the top of the lens to be detected through the first optical path and the photographing port; A camera, arranged in the second optical path, for photographing the lens to be detected through the second optical path and the photographing port; Wherein, both the first light source and the camera are electrically connected to the control mechanism, and the control mechanism is used for controlling the first light source and the camera to cooperate for photographing when the plane of the photographing port is perpendicular to the area where the lens to be detected is located.

[0008] According to an optical part defect measuring device provided by the present invention, an irradiation port is provided at the top of the load base, and a third optical path is formed in the load base; The imaging mechanism further includes: a second light source; the second light source is arranged in the third optical path, for irradiating the bottom of the lens to be detected through the third optical path and the irradiation port; Wherein, the second light source is electrically connected to the control mechanism, and the control mechanism is used for controlling the first light source, the second light source and the camera to cooperate for photographing when the plane of the photographing port is perpendicular to the area where the lens to be detected is located.

[0009] According to an optical part defect measuring device provided by the present invention, the imaging mechanism further includes: a third light source; The third light source is arranged in a ring at the bottom of the objective lens assembly, for irradiating the circumferential direction of the lens to be detected; Wherein, the third light source is electrically connected to the control mechanism, and the control mechanism is configured to control the first light source, the second light source, the third light source, and the camera to cooperate for shooting when the shooting port is perpendicular to the plane of the area where the lens to be detected is located.

[0010] According to an optical part defect measuring device provided by the present invention, the imaging mechanism further includes: A first condenser, disposed in the first optical path, between the shooting port and the first light source; A second condenser, disposed in the third optical path, between the irradiation port and the second light source; An amplifier, disposed in the second optical path, between the irradiation port and the camera.

[0011] According to an optical part defect measuring device provided by the present invention, the first optical path is communicated with the second optical path, and a beam splitter is provided at the position where the first optical path and the second optical path are communicated; The first light source irradiates toward the shooting port through the first optical path and the beam splitter; the camera shoots toward the shooting port through the second optical path and the beam splitter.

[0012] According to an optical part defect measuring device provided by the present invention, the loading base includes: A base body; A first driving member and a first support plate, the first support plate is disposed on the base body, a driving end of the first driving member is connected to the first support plate, and the first driving member is configured to drive the first support plate to move along a first direction on the base body; A second driving member and a second support plate, the second support plate is disposed on the first support plate, the second support plate is provided with the electromagnetic generation module, a driving end of the second driving member is connected to the second support plate, and the second driving member is configured to drive the second support plate to move along a second direction on the first support plate.

[0013] According to an optical part defect measuring device provided by the present invention, a fixture adapted to fix the lens to be detected is provided on the loading table.

[0014] The optical part defect measurement device provided by the present invention drives the stage through magnetic induction, realizing the multi-degree-of-freedom movement of the stage, so as to better meet the detection requirements of optical parts with different shapes and sizes. At the same time, the combination of the imaging mechanism and the control mechanism makes the shooting process more accurate and controllable, and can accurately capture the image of the lens to be detected during the movement and hovering of the stage. In addition, this device is also equipped with a detection mechanism, which can automatically identify, capture, measure and compare the defects in the image, so as to generate accurate classification results. This automated detection method not only improves the detection efficiency but also reduces the errors caused by human factors. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the optical part defect measurement device provided by the present invention.

[0017] Figure 2 It is a schematic diagram of the optical part defect measurement device provided by the present invention continuously pitching 360° around the axis at a pitching angle.

[0018] Figure 3 It is on Figure 2 the basis of lateral movement schematic diagram.

[0019] Figure 4 It is a schematic diagram of the manual mechanism provided by the present invention.

[0020] Reference Signs: 1. Loading mechanism; 11. Stage; 111. Fixture; 12. Loading base; 121. Base body; 122. First driving member; 123. First support plate; 124. Second driving member; 125. Second support plate; 13. Lens to be detected; 14. Magnetic induction receiving module; 15. Electromagnetic generating unit; 16. Electromagnetic region control unit; 2. Imaging mechanism; 21. Objective lens assembly; 22. First light source; 23. Camera; 24. Second light source; 25. Third light source; 26. First condenser; 27. Second condenser; 28. Amplifier; 3. Manual mechanism; 31. First indicator light; 32. Second indicator light; 33. Third indicator light; 34. Fourth indicator light; 35. First control handle; 36. Second control handle. Detailed Embodiments

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The following will describe Figures 1-4 an optical part defect measurement device provided by the present invention.

[0023] In some embodiments provided by the present invention, as Figures 1 to 3 shown, the optical part defect measurement device includes: a loading mechanism 1, an imaging mechanism 2, a control mechanism and a detection mechanism. The loading mechanism 1 includes: a loading base 12 and a loading platform 11; the loading platform 11 is arranged on the loading base 12, the loading platform 11 is adapted to carry the lens 13 to be detected, a magnetic induction receiving module 14 and a magnetic member are arranged on the loading platform 11, and an electromagnetic generation module is arranged on the loading base 12. The electromagnetic generation module is used to generate a magnetic field at the position of the loading platform 11 to drive the loading platform 11 through the magnetic member. The magnetic induction receiving module 14 is used to obtain the magnetic field change and position change; the imaging mechanism 2 is opposite to the loading platform 11 and is used to take pictures of the lens 13 to be detected during the movement and hovering of the loading platform 11 to generate an image of the lens 13 to be detected; the control mechanism is electrically connected to the imaging mechanism 2, the electromagnetic generation module and the magnetic induction receiving module 14. The control mechanism is used to control the electromagnetic generation module to adjust the magnetic field according to the magnetic field change and position change fed back by the magnetic induction receiving module 14, and control the imaging mechanism 2 to take pictures when the imaging mechanism 2 is perpendicular to the plane of the area where the lens 13 to be detected is located; the detection mechanism is electrically connected to the imaging mechanism 2 and is used to identify, capture, measure and compare the defects in the image to generate a classification result for the lens 13 to be detected.

[0024] During the working process, the lens 13 to be detected is placed on the loading platform 11 to ensure that the lens is stable and in the correct position. The control mechanism is started to initialize the electromagnetic generation module to prepare for the movement and hovering of the loading platform 11. The imaging mechanism 2 and the detection mechanism are ready and waiting to receive the instructions from the control mechanism for taking pictures and detection.

[0025] The control mechanism generates a magnetic field at the position of the loading platform 11 through the electromagnetic generation module according to a preset detection program or operation instruction. The magnetic field acts on the magnetic member on the loading platform 11 to drive the loading platform 11 to perform multi-degree-of-freedom movement on the loading base 12 (realizing 360-degree adjustment of the lens 13 to be detected on the loading platform 11).

[0026] The magnetic induction receiving module 14 obtains the magnetic field changes and the position changes of the stage 11 in real time, and feeds this information back to the control mechanism. The control mechanism precisely adjusts the output of the electromagnetic generation module according to the feedback information to ensure that the stage 11 moves and hovers along a predetermined trajectory and speed.

[0027] When the stage 11 moves to a position perpendicular to the imaging mechanism 2 and the lens 13 to be detected, the control mechanism issues a shooting instruction to the imaging mechanism 2. The imaging mechanism 2 is activated to shoot the lens 13 to be detected, generating a clear lens image. After the shooting is completed, the imaging mechanism 2 transmits the image data to the detection mechanism for processing.

[0028] The detection mechanism receives the image data from the imaging mechanism 2, and automatically identifies the defect features in the image using image processing techniques. The identified defect features are captured, measured, and compared, and the type and degree of the defects are judged according to preset standards or thresholds. According to the results of defect identification and measurement, the detection mechanism generates a classification result for the lens 13 to be detected, such as qualified, unqualified, or requiring further detection, etc.

[0029] The detection mechanism outputs the classification result to a display device or a storage device for the operator to view or for subsequent analysis. If the lens 13 to be detected is judged to be unqualified or requires further detection, the operator can perform corresponding processing or re-inspection according to the classification result. During the entire detection process, the control mechanism continuously monitors the position and state of the stage 11 to ensure the smooth progress of the entire detection process.

[0030] The optical part defect measurement device provided by the present invention drives the stage 11 through magnetic induction, realizing the multi-degree-of-freedom movement of the stage 11, so as to better meet the detection requirements of optical parts with different shapes and sizes. At the same time, the combination of the imaging mechanism 2 and the control mechanism makes the shooting process more precise and controllable, and can accurately capture the image of the lens 13 to be detected during the movement and hovering of the stage 11. In addition, this device is also equipped with a detection mechanism, which can automatically identify, capture, measure, and compare the defects in the image, so as to generate accurate classification results. This automated detection method not only improves the detection efficiency but also reduces the errors caused by human factors.

[0031] In some embodiments, as Figures 1 to 3 shown, the electromagnetic generation module includes: a multi-segment electromagnetic generation unit 15 and a plurality of electromagnetic region control units 16; the multi-segment electromagnetic generation unit 15 is arranged in a circular symmetry on the base, and the electromagnetic region control units 16 are symmetrically distributed on the base at the center position of the base. Each electromagnetic region control unit 16 is electrically connected to the corresponding segments of the electromagnetic generation unit 15, and each electromagnetic region control unit 16 is electrically connected to the control mechanism.

[0032] In this embodiment, the multi-segment electromagnetic generation units 15 are arranged in segments and symmetrically arranged in a ring shape on the base. These electromagnetic generation units 15 are evenly distributed around the center point of the base, possibly forming one or more concentric rings, and several electromagnetic generation units 15 are evenly arranged on each ring. This arrangement helps to achieve a uniform electromagnetic field distribution.

[0033] Multiple electromagnetic region control units 16 are symmetrically distributed on the base at the center position of the base. These control units are symmetrically distributed and arranged in a certain symmetric form (such as linear, annular, etc.) near the center of the base. Each electromagnetic region control unit 16 is responsible for controlling the corresponding segments of the electromagnetic generation units 15 to achieve regionalized electromagnetic field control. For example, the multi-segment electromagnetic generation units 15 in an annular shape are controlled by a corresponding electromagnetic region control unit 16 to be powered on and off.

[0034] At the same time, each electromagnetic region control unit 16 is electrically connected to the control mechanism. The control mechanism is responsible for receiving external instructions, processing data, and regulating the working state of the electromagnetic generation units 15 through the electromagnetic region control units 16.

[0035] In order to accurately obtain the magnetic field change and position change, generally, multiple magnetic induction receiving modules 14 are provided. The multiple magnetic induction receiving modules 14 are arranged at intervals in a ring shape on the stage 11. By arranging multiple magnetic induction receiving modules 14 on the stage 11, multi-point monitoring of the magnetic field can be achieved.

[0036] Each magnetic induction receiving module 14 can independently sense the magnetic field strength and direction at its location, thus providing rich magnetic field data. Arranging the magnetic induction receiving modules 14 at intervals in a ring shape on the stage 11 can ensure comprehensive coverage of the magnetic field around the stage 11.

[0037] The multiple magnetic induction receiving modules 14 work simultaneously, and the change of the magnetic field can be monitored in real time. By comparing the readings of the magnetic induction receiving modules 14 at different positions, the magnetic field gradient, that is, the rate of change of the magnetic field strength with position, can be calculated, so as to more accurately understand the dynamic characteristics of the magnetic field.

[0038] The magnetic induction receiving module 14 can adopt a Hall sensor. The Hall sensor can sense all physical quantities related to magnetic information. The Hall effect means that when an electric current passes through a metal or semiconductor thin film and a magnetic field is applied in the vertical direction of the thin film, an electromotive force (Hall voltage) will be generated in the direction perpendicular to the current and the magnetic field. The magnetic field data provided by the multiple magnetic induction receiving modules 14 can be used in positioning algorithms, such as triangulation or more complex magnetic field positioning algorithms, to accurately determine the magnetic field change and position change.

[0039] It should be noted that an imaging magnetic induction receiving module and an imaging magnetic part can also be provided in the imaging mechanism 2 as needed. Since an electromagnetic generation module dedicated to the imaging mechanism 2 is provided on the loading base 12, the electromagnetic generation module generates a magnetic field to drive the entire imaging mechanism 2 to move through the imaging magnetic part. The imaging magnetic induction receiving module is used to obtain magnetic field changes and position changes. In this embodiment, since the imaging mechanism 2 can move in cooperation with the magnetic field, the flexibility of the detection system is significantly improved. The imaging mechanism 2 is no longer limited to a fixed position, but can be precisely adjusted in position by magnetic field drive according to the specific position of the lens 13 to be detected and the detection requirements. This characteristic not only optimizes the shooting angle, ensuring that the imaging mechanism 2 can always capture clear images of the lens 13 to be detected at the best position, but also improves the adaptability of the detection device to lenses of different sizes and shapes. In addition, the mobility of the imaging mechanism 2 also makes it possible to implement more complex and comprehensive detection processes, such as multi-angle shooting and dynamic tracking shooting, thereby further improving the accuracy of defect identification and the detection efficiency.

[0040] During the control process, the control mechanism generates a magnetic field at the position of the loading platform 11 through the electromagnetic generation module. This magnetic field acts on the magnetic part on the loading platform 11 to drive the loading platform 11 to perform multi-degree-of-freedom movement on the loading base 12. At the same time, another electromagnetic generation module (dedicated to the imaging mechanism 2) on the loading base 12 generates a magnetic field to drive the entire imaging mechanism 2 to move through the imaging magnetic part.

[0041] The magnetic induction receiving module 14 obtains magnetic field changes and the position changes of the loading platform 11 in real time, and feeds this information back to the control mechanism. The imaging magnetic induction receiving module obtains magnetic field changes and the position changes of the imaging mechanism 2, and feeds this information back to the control mechanism.

[0042] The control mechanism precisely adjusts the output of the electromagnetic generation module according to the information fed back by the magnetic induction receiving module 14 (and the imaging magnetic induction receiving module if provided). By adjusting the magnetic field strength and direction, it is ensured that the loading platform 11 and the imaging mechanism 2 (if provided) move and hover according to the predetermined trajectory and speed.

[0043] Under the coordination of the control mechanism, the loading platform 11 and the imaging mechanism 2 can move simultaneously to achieve the best shooting position and angle.

[0044] For example, the loading platform 11 can adjust the position of the lens 13 to be detected so that it faces the lens of the imaging mechanism 2; at the same time, the imaging mechanism 2 can also be finely adjusted to ensure the best distance and angle between the lens and the lens.

[0045] When the stage 11 moves to a position perpendicular (or the optimal shooting angle) to the imaging mechanism 2 and the lens 13 to be detected, the control mechanism sends a shooting instruction to the imaging mechanism 2. The imaging mechanism 2 is activated to shoot the lens 13 to be detected, generating a clear lens image.

[0046] After the shooting is completed, the imaging mechanism 2 transmits the image data to the detection mechanism for processing. The detection mechanism uses image processing technology to automatically identify the defect features in the image, perform grasping, measurement and comparison, and generate a classification result for the lens 13 to be detected.

[0047] In some examples, such as Figures 1 to 3 shown, the imaging mechanism 2 includes: an objective lens assembly 21, a first light source 22, and a camera 23. The bottom of the objective lens assembly 21 is provided with a shooting port opposite to the stage 11. A first optical path and a second optical path are formed in the objective lens assembly 21, and both the first optical path and the second optical path communicate with the shooting port; the first light source 22 is arranged on the first optical path for irradiating the top of the lens 13 to be detected through the first optical path and the shooting port; the camera 23 is arranged on the second optical path for shooting the lens 13 to be detected through the second optical path and the shooting port; both the first light source 22 and the camera 23 are electrically connected to the control mechanism, and the control mechanism is used to control the first light source 22 and the camera 23 to cooperate in shooting when the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located.

[0048] In this embodiment, the first optical path is specifically used to transmit the light emitted by the first light source 22 to ensure that the light can accurately irradiate the top of the lens 13 to be detected. The second optical path is used to transmit the light reflected or transmitted from the lens 13 to be detected so that the camera 23 can capture a clear image.

[0049] The first light source 22 is arranged on the first optical path, and its function is to emit light and irradiate the top of the lens 13 to be detected through the first optical path and the shooting port. The camera 23 is arranged on the second optical path for capturing the image of the lens 13 to be detected transmitted through the second optical path and the shooting port.

[0050] During the working process, when the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located, the control mechanism issues an instruction to start the first light source 22 and the camera 23 simultaneously. The first light source 22 emits light and irradiates the top of the lens 13 to be detected through the first optical path and the shooting port. The camera 23 captures the image of the lens 13 to be detected through the second optical path and the shooting port, and converts it into an electrical signal for storage or further processing. The control mechanism is responsible for coordinating the work of the first light source 22 and the camera 23. When the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located, the control mechanism ensures that the first light source 22 and the camera 23 can cooperate in shooting to obtain accurate image data.

[0051] In some embodiments, such asFigures 1 to 3 As shown, an irradiation port is provided at the top of the load base 12, and a third optical path is formed inside the load base 12; the imaging mechanism 2 further includes: a second light source 24; the second light source 24 is disposed in the third optical path and is used to irradiate the bottom of the lens 13 to be detected through the third optical path and the irradiation port; wherein, the second light source 24 is electrically connected to the control mechanism, and the control mechanism is used to control the first light source 22, the second light source 24 and the camera 23 to cooperate for shooting when the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located.

[0052] In this embodiment, an irradiation port is provided at the top of the load base 12 to allow light to irradiate the lens 13 to be detected from the bottom. A third optical path is formed inside the load base 12, and this optical path is specifically used to transmit the light emitted by the second light source 24. The addition of the second light source 24 enables the imaging mechanism 2 to irradiate both the top and bottom of the lens 13 to be detected simultaneously, thereby obtaining more comprehensive image information.

[0053] During the working process, when the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located, the control mechanism not only controls the cooperation between the first light source 22 and the camera 23 for shooting, but also controls the second light source 24 to be turned on simultaneously. The first light source 22 irradiates the top of the lens 13 to be detected through the first optical path and the shooting port, while the second light source 24 irradiates the bottom of the lens 13 to be detected through the third optical path and the irradiation port. The camera 23 captures the overall image of the lens 13 to be detected through the second optical path and the shooting port, including the effects after the top and bottom are irradiated. The control mechanism needs to coordinate the work of the first light source 22, the second light source 24 and the camera 23 simultaneously to ensure that they can cooperate for shooting at the correct time.

[0054] To irradiate the entire lens 13 to be detected, the imaging mechanism 2 further includes: a third light source 25; the third light source 25 is arranged in a ring at the bottom of the objective lens assembly 21 and is used to irradiate the circumference of the lens 13 to be detected; the third light source 25 is electrically connected to the control mechanism, and the control mechanism is used to control the first light source 22, the second light source 24, the third light source 25 and the camera 23 to cooperate for shooting when the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located. The design of the third light source 25 is aimed at providing a circumferential irradiation effect to ensure that the edges and sides of the lens 13 to be detected can also be fully illuminated. This irradiation method helps to capture the details of the lens edge and possible defects or abnormalities.

[0055] During the detection process, when the plane of the shooting port is perpendicular to the area where the lens 13 to be detected is located, the control mechanism now needs to coordinate the work of the first light source 22, the second light source 24, the third light source 25 and the camera 23 simultaneously. The first light source 22 continues to irradiate the top of the lens through the first optical path and the shooting port. The second light source 24 irradiates the bottom of the lens through the third optical path and the irradiation port. The third light source 25 is responsible for providing uniform irradiation from the circumferential direction. The camera 23 captures the overall image of the lens 13 to be detected through the second optical path and the shooting port, including the effects after irradiation of the top, bottom and circumferential direction. The control mechanism now needs to process more input and output signals to ensure that all light sources and the camera 23 can work according to the predetermined timing and intensity. By adding the third light source 25, the imaging mechanism 2 can now provide more comprehensive and accurate lens image information. This design is particularly suitable for scenarios that require high-precision and all-round detection, such as lens quality control, optical performance evaluation, etc.

[0056] In addition, according to the detection requirements, the control mechanism can adjust the brightness of the first light source 22, the second light source 24 and the third light source 25 to ensure the best lighting effect. The change of color temperature will affect the color reproduction and contrast of the lens, and the control mechanism can precisely adjust the color temperature of the light source. The control mechanism can also adjust the lighting mode, such as different lighting modes of direct light, scattered light, polarization, etc., which can highlight specific features of the lens, and the control mechanism can flexibly switch. Moreover, it can adjust the focal length of the objective lens assembly 21 by adjusting the position of the stage 9, and realize the adjustment of the pitch angle of the lens 13 to be detected, the position information of the electromagnetic region control module, the magnitude of the current, the linear velocity of pitch adjustment, etc.

[0057] In some embodiments, as Figure 1 shown, the imaging mechanism 2 further includes: a first condenser 26, a second condenser 27 and an amplifier 28. The first condenser 26 is arranged on the first optical path, between the shooting port and the first light source 22; the second condenser 27 is arranged on the third optical path, between the irradiation port and the second light source 24; the amplifier 28 is arranged on the second optical path, between the irradiation port and the camera 23.

[0058] In this embodiment, the first condenser 26 is arranged on the first optical path. The main function of the first condenser 26 is to collect and focus light, ensuring that the light from the first light source 22 can irradiate the top of the lens 13 to be detected more efficiently through the shooting port. By using the first condenser 26, the utilization rate of light can be improved, thereby enhancing the irradiation effect and image brightness.

[0059] The second condenser 27 is disposed on the third optical path. Similar to the first condenser 26, the second condenser 27 is also used to collect and focus the light rays from the second light source 24, ensuring that the light rays can irradiate the bottom of the lens 13 to be detected more accurately through the irradiation port. The use of the second condenser 27 helps to improve the uniformity and intensity of the bottom irradiation.

[0060] The amplifier 28 is disposed on the second optical path. The main function of the amplifier 28 is to amplify the light rays reflected or transmitted from the lens 13 to be detected, so that the camera 23 can capture clearer and more detailed images. By using the amplifier 28, the resolution and contrast of the image can be improved, thereby enhancing the image quality.

[0061] During the detection process, when the shooting port is perpendicular to the plane of the area where the lens 13 to be detected is located, the first light source 22, the second light source 24, and the third light source 25 (as mentioned in the previous description) are turned on simultaneously, and irradiate the top, bottom, and circumferential directions of the lens 13 to be detected through the first optical path, the third optical path, and (possibly existing) other optical paths respectively. The first condenser 26 and the second condenser 27 focus the light rays from the first light source 22 and the second light source 24 respectively, ensuring that the light rays can irradiate the lens efficiently. The amplifier 28 amplifies the light rays reflected or transmitted from the lens, enabling the camera 23 to capture high-quality images. The camera 23 converts the captured images into electrical signals for subsequent processing and analysis.

[0062] In some embodiments, as Figure 1 shown, the first optical path is connected to the second optical path, and a beam splitter is provided at the position where the first optical path and the second optical path are connected; the first light source 22 irradiates toward the shooting port through the first optical path and the beam splitter; the camera 23 shoots toward the shooting port through the second optical path and the beam splitter.

[0063] In this embodiment, the first optical path is the path from the first light source 22 to the beam splitter. The light rays emitted by the first light source 22 propagate along this optical path. The second optical path is the path from the camera 23 to the beam splitter, and the camera 23 receives the light rays from the beam splitter through this optical path. The beam splitter is located at the intersection of the first optical path and the second optical path, and its main function is to reflect and transmit light rays. The first light source 22 irradiates the beam splitter through the first optical path. The light rays of the first light source 22 reflected by the beam splitter will be directed toward the shooting port to provide illumination for the object to be photographed. The camera 23 is aligned with the beam splitter through the second optical path. The light rays transmitted by the beam splitter will enter the camera 23, enabling the camera 23 to capture the image of the object to be photographed.

[0064] In some embodiments, as Figure 1As shown in the figure, the load-carrying base 12 includes: a base body 121, a first driving member 122, a first support plate 123, a second driving member 124, and a second support plate 125. The first support plate 123 is disposed on the base body 121, and the driving end of the first driving member 122 is connected to the first support plate 123. The first driving member 122 is configured to drive the first support plate 123 to move on the base body 121 along a first direction; the second support plate 125 is disposed on the first support plate 123, and the driving end of the second driving member 124 is connected to the second support plate 125. The second driving member 124 is configured to drive the second support plate 125 to move on the first support plate 123 along a second direction.

[0065] Specifically, the base body 121 is the basic part of the entire load-carrying base 12, providing support and installation interfaces for other components.

[0066] The first driving member 122 is a device capable of generating a driving force, such as a motor, a cylinder, etc. The driving end of the first driving member 122 is connected to the first support plate 123, and is used to drive the first support plate 123 to move on the base body 121.

[0067] The first support plate 123 is disposed on the base body 121 and is the object directly driven by the first driving member 122. The first support plate 123 can move on the base body 121 along the first direction. In this embodiment, the first direction is usually the horizontal first direction (the X-axis direction of the plane).

[0068] The second driving member 124 is similar to the first driving member 122 and is also a device for generating a driving force. The driving end of the second driving member 124 is connected to the second support plate 125, and is used to drive the second support plate 125 to move on the first support plate 123. The second support plate 125 is disposed on the first support plate 123 and is the object directly driven by the second driving member 124. The second support plate 125 can move on the first support plate 123 along the second direction. In this embodiment, the second direction is usually the horizontal second direction (the Y-axis direction of the plane), perpendicular to the first direction.

[0069] When the first driving member 122 is started, it generates a driving force and transmits it to the first support plate 123 through the driving end. Under the action of the driving force, the first support plate 123 moves on the base body 121 along the horizontal first direction. When the second driving member 124 is started, it also generates a driving force and transmits it to the second support plate 125 through the driving end. Under the action of the driving force, the second support plate 125 moves on the first support plate 123 along the horizontal second direction. Integrating the electromagnetic generation module on the second support plate 125 can achieve synchronous control of the electromagnetic field and mechanical movement, and can control the magnetic field in the horizontal direction By controlling the operations of the first driving member 122 and the second driving member 124 simultaneously or sequentially, the second support plate 125 can be moved to any position within a two-dimensional plane (XY axis), thereby enabling the control of the position of the stage 11 and the lens 13 to be detected thereon.

[0070] In addition, a manual mechanism 3 can be additionally provided as needed, such as Figure 4 shown, on the manual mechanism 3, there are a first indicator light 31 in operation and second indicator lights 32, third indicator lights 33, and fourth indicator lights 34 corresponding to the operations of the first light source 22, the second light source 24, and the third light source 25 respectively. At the same time, on the manual mechanism 3, there are also a first control handle 35 and a second control handle 36 for controlling the electromagnetic generation module. The first control handle 35 can control the front-back, left-right movement of the stage 11, and the second control handle 36 can control the 360° elevation position and the adjustment of the elevation degree of the plane of the stage 11. On the manual mechanism 3, there are also buttons for turning on and off the first light source 22, the second light source 24, and the third light source 25, and buttons for adjusting the color temperature of the light sources of the first light source 22, the second light source 24, and the third light source 25, etc.

[0071] In some embodiments, such as Figure 1 shown, on the stage 11, there is a fixture 111 suitable for fixing the lens 13 to be detected. The stage 11 is the part of the optical component defect measurement device for carrying and positioning the object to be detected. The fixture 111 is a device for fixing or clamping a workpiece to ensure that the workpiece does not move or shake during the processing or detection process. By using the fixture 111, the accurate position of the lens on the stage 11 can be ensured, and the repeatability and accuracy of the detection can be improved. The fixture 111 can also prevent the lens from moving due to external force or vibration during the detection process, thereby avoiding errors or damage.

[0072] During the actual use of the optical component defect measurement device, the lens 13 to be detected is placed in the fixture 111 of the stage 11, and the fixture locking mechanism is adjusted to ensure that the lens is stable and the optical axis is aligned with the center of the stage 11.

[0073] According to the lens parameters (central thickness, R value, outer diameter, etc.) and the detection requirements, select the illumination mode through the buttons of the manual mechanism 3: For example, epi-illumination (enabling the first light source 22 to irradiate the top) is suitable for surface defect detection; transmission illumination (enabling the second light source 24 to irradiate the bottom) is suitable for internal defect detection; circumferential illumination (enabling the third light source 25) is used for capturing edge and complex surface defects. Or the first light source 22, the second light source 24, and the third light source 25 can also be enabled simultaneously for mixed illumination.

[0074] The control mechanism initializes the electromagnetic generation module, activates the magnetic induction receiving module 14, and monitors the magnetic field and position of the stage 11 in real time. The stage 11 is driven to move along the X / Y axis by the first control handle 35 (or a preset program) to bring the area of the lens to be measured into the field of view of the objective lens assembly 21; the control mechanism automatically calculates the pitch angle based on the R value, aperture, and thickness, or adjusts the elevation angle of the plane of the stage 11 through the second control handle 36 to ensure that the area of the lens surface to be measured is perpendicular to the optical axis; in combination with the first driving member 122 (X-axis) and the second driving member 124 (Y-axis), it scans in regions and rotates and scans 360 degrees around the optical axis at an appropriate pitch angle, and the system automatically stitches the images.

[0075] The control mechanism dynamically adjusts the light source parameters (brightness, color temperature) according to the lens type, and coordinates the first optical path (illumination) and the second optical path (imaging) through the beam splitter. The objective lens assembly 21 optimizes the imaging resolution through the amplifier 28, and the camera 23 performs autofocus: If the depth of field is insufficient (such as for lenses with high curvature) or limited by the field of view of the lens, the control mechanism triggers the electromagnetic generation module to finely adjust the suspension height and pitch angle of the stage 11, and cooperates with the second driving members 122 and 124 to move horizontally and vertically. For the lens, at the required center aperture, 0.3 aperture, 0.7 aperture, edge aperture and other regions, it segments and matches the appropriate pitch angles, rotates and scans 360 degrees around the optical axis respectively and stitches them into an image of the entire surface of the lens to achieve clear imaging in the whole area.

[0076] When detecting standard lenses, the stage 11 rotates uniformly around the optical axis under electromagnetic drive, and the camera 23 continuously captures transmission / reflection images to meet the detection requirements that appearance defects are invisible during rotation.

[0077] For batch detection of special lenses (for large-aperture complex-shaped lenses), the central area of the special lens can be imaged through focusing; for the edge area of the special lens, the stage 11 is used in combination with X / Y axis translation and elevation angle adjustment, and after area scanning, it is automatically stitched by the system; the key parameters (sagitta, R value) are inversely calculated through the movement trajectory of the stage 11 to assist in positioning the detection area, establish coordinate and trajectory memory. After loading and replacing the lens, according to the memory, it scans, stitches and images to complete batch detection.

[0078] The detection mechanism receives the image data and performs the following processing: extracting defect features such as scratches, bubbles, and impurities based on deep learning algorithms; calculating the area, length, brightness gradient, and distribution density of the defects; comparing with the preset standards (such as national standard GB / T 1185) or customer thresholds, and marking the over-limit defects. Generating classification results (qualified / rework / scrap) and synchronizing them to the display terminal and the database.

[0079] After that, the control mechanism drives the robotic arm to grab and adjust the position of the unqualified lens and then performs detection again; the qualified products are classified and stored according to grades, and the lenses that need to be reinspected re-enter the stage 11 for multi-angle review.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical parts defect measuring device, characterized in that: include: The loading mechanism comprises: a loading base and a loading platform; the loading platform is arranged on the loading base, the loading platform is suitable for carrying the lens to be tested, a magnetic induction receiving module and a magnetic member are arranged on the loading platform, an electromagnetic generating module is arranged on the loading base, the electromagnetic generating module is used to generate a magnetic field at the position of the loading platform, so as to drive the loading platform through the magnetic member, and the magnetic induction receiving module is used to obtain the change of the magnetic field and the change of the position; An imaging mechanism, opposite to the stage, used for photographing the lens to be inspected during the movement and hovering of the stage to generate an image of the lens to be inspected; a control mechanism, electrically connected to the imaging mechanism, the electromagnetic generating module and the magnetic induction receiving module, the control mechanism being used to control the electromagnetic generating module to adjust the magnetic field according to the magnetic field change and position change fed back by the magnetic induction receiving module, and to control the imaging mechanism to take pictures when the imaging mechanism is perpendicular to the plane of the region where the lens to be detected is located; The detection mechanism is electrically connected to the imaging mechanism and is used to identify, capture, measure and compare the defects in the image to generate a classification result for the lens to be detected.

2. The optical parts defect measuring device according to claim 1, characterized in that: The electromagnetic generation module includes: a multi-segment electromagnetic generation unit and a plurality of electromagnetic region control units; The multiple sections of electromagnetic generating units are arranged symmetrically in a ring shape on the base, and the electromagnetic area control units are symmetrically distributed on the base at the center position of the base. Each electromagnetic area control unit is electrically connected to the corresponding sections of the electromagnetic generating units, and each electromagnetic area control unit is electrically connected to the control mechanism.

3. The optical parts defect measuring device according to claim 2, characterized in that: There are multiple magnetic induction receiving modules, and the multiple magnetic induction receiving modules are arranged in a ring shape on the loading platform in sequence.

4. The optical parts defect measuring device according to claim 1, characterized in that: The imaging mechanism comprises: An objective lens assembly, wherein a shooting port opposite to the stage is provided at the bottom of the objective lens assembly, a first optical path and a second optical path are formed in the objective lens assembly, and both the first optical path and the second optical path are connected to the shooting port; A first light source, disposed in the first light path, for irradiating the top of the lens to be inspected through the first light path and the shooting port; A camera, arranged in the second optical path, for photographing the lens to be inspected through the second optical path and the photographing port; Wherein, the first light source and the camera are both electrically connected to the control mechanism, and the control mechanism is used to control the first light source and the camera to cooperate in shooting when the shooting port is perpendicular to the plane of the area where the lens to be inspected is located.

5. The optical parts defect measuring device according to claim 4, characterized in that: An illumination port is provided on the top of the object-carrying base, and a third optical path is formed in the object-carrying base; The imaging mechanism further includes: a second light source; the second light source is arranged in the third light path, and is used to illuminate the bottom of the lens to be inspected through the third light path and the illumination port; The second light source is electrically connected to the control mechanism, and the control mechanism is used to control the first light source, the second light source and the camera to cooperate in shooting when the shooting port is perpendicular to the plane of the area where the lens to be inspected is located.

6. The optical parts defect measuring device according to claim 5, characterized in that: The imaging mechanism further includes: a third light source; The third light source is arranged in a ring shape at the bottom of the objective lens assembly, and is used to irradiate the circumference of the lens to be inspected; The third light source is electrically connected to the control mechanism, and the control mechanism is used to control the first light source, the second light source, the third light source and the camera to cooperate in shooting when the shooting port is perpendicular to the plane of the area where the lens to be inspected is located.

7. The optical parts defect measuring device according to claim 5, characterized in that: The imaging mechanism also includes: A first light concentrator, arranged in the first light path, between the shooting port and the first light source; A second light concentrator is arranged in the third light path and located between the illumination port and the second light source; The amplifier is arranged in the second optical path and is located between the illumination port and the camera.

8. The optical parts defect measuring device according to claim 4, characterized in that: The first optical path is connected to the second optical path, and a beam splitter is provided at a position where the first optical path and the second optical path are connected; The first light source irradiates toward the shooting port through the first light path and the beam splitter; and the camera shoots toward the shooting port through the second light path and the beam splitter.

9. The optical parts defect measuring device according to any one of claims 1 to 8, characterized in that: The object carrier base comprises: Base body; a first driving member and a first supporting plate, wherein the first supporting plate is disposed on the base body, a driving end of the first driving member is connected to the first supporting plate, and the first driving member is used to drive the first supporting plate to move along a first direction on the base body; A second driving member and a second support plate, wherein the second support plate is arranged on the first support plate, the second support plate is provided with the electromagnetic generating module, the driving end of the second driving member is connected to the second support plate, and the second driving member is used to drive the second support plate to move along a second direction on the first support plate.

10. The optical parts defect measuring device according to any one of claims 1 to 8, characterized in that: The stage is provided with a fixture suitable for fixing the lens to be tested.

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