Lens curvature detection device
Through the combination of the sensing module and the lens clamping driving mechanism, the existing lens bending detection device has solved the complex structure and high cost, and achieved simple and efficient lens bending detection, reducing the failure rate and alarm rate.
Patent Information
- Application Number
- CN202422828449.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The existing lens bending detection methods have complex structures, high failure rate and cost, and require high-precision locators.
The contact sensor part on the sensing module is used to abut the lens, and the lens clamping driving mechanism is used to feedback the contact point position of the lens through the contact sensor part to reduce the dependence on the high-precision positioner, and use a displacement encoder to ensure detection accuracy and stability.
The device structure is simplified, the cost is reduced, the detection accuracy and stability is improved, and the failure rate and alarm rate are reduced.
Smart Images
Figure CN223295632U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lens detection, in particular to a lens curvature detection device. Background Art
[0002] The existing lens curvature detection method is to clamp the two axial end faces at the center of the lens through the two clamping rods in the lens clamping drive mechanism, and drive the lens to achieve mobile positioning and rotational positioning through the two clamping rods; during lens detection, the lens is driven to move to the lens detection position by the lens clamping drive mechanism, and the two axial end faces of the outer edge of the lens are lightly clamped at the detection position. After clamping, the lens between the two clamping rods is driven to rotate axially under the rotation action of the lens clamping drive mechanism. During the rotation process, the two contact clamps are always lightly pressed against the lens surface. As the surface curvature corresponding to different circumferential positions of the lens is different during the rotation process, the axial distance between the two contact clamps will change with the different surface curvatures, and then the data of the lens surface detected by the contact clamps are read through the locator values on the two contact clamps, and finally the curvature of the two axial end faces of the lens can be calculated through the data.
[0003] With the above detection method, firstly, the structure of the entire device is relatively complex, resulting in a high failure rate and alarm rate of the entire structure. In addition, detection is performed directly through the locators on the two contact clamps, which requires very high accuracy of the locators, resulting in high costs for the locators and maintenance costs for the entire device. Utility Model Content
[0004] The technical problem to be solved by the present invention is that the existing detection method has a relatively complex structure, a high failure rate and a high cost. In order to overcome the above defects of the existing technology, the present invention provides a structure of a contact sensing part on the sensor module that subverts the original design. At the same time, it is combined with the lens clamping drive mechanism. The overall structure is simpler and more convenient, and there is no need to use a high-precision positioner, which reduces costs. At the same time, it can also ensure the accuracy and stability of detection and reduce the failure rate and alarm rate.
[0005] For the purpose of this utility model, the following technical solutions are adopted:
[0006] A lens curvature detection device includes a detection mount, a sensor module, a lens clamping drive mechanism, and a controller. The sensor module is provided with a contact sensing portion that contacts the surface of the lens being tested and provides feedback on the position of the lens contact point via the contact sensing portion. The lens clamping drive mechanism is configured to clamp the lens and drive the lens to achieve movement and rotational positioning. The controller is electrically connected to the sensor module and the lens clamping drive mechanism, respectively, and is configured to read the state of the sensor module and control the lens clamping drive mechanism to achieve movement and rotational positioning. Ultimately, the curvature of one side of the lens is determined based on the data provided by the lens clamping drive mechanism. The device utilizes the contact sensing portion of the sensor module to contact the lens, maintaining a constant deformation of the contact sensing portion and ensuring that the deformation remains constant. This device, in conjunction with the lens clamping drive mechanism, can detect the curvature of the front and rear surfaces of one side of the lens during movement, positioning, and rotation. This device significantly improves upon the existing design, resulting in a simpler structure and eliminating the need for a high-precision positioner, thus reducing costs. Furthermore, the device ensures detection accuracy and stability, thereby reducing failure and error rates.
[0007] Preferably, the sensing module includes a first contact plate and a first sensor; the upper end of the first contact plate is fixedly connected to the detection mounting base, and the lower end of the first contact plate is suspended in the air. The contact sensing portion is disposed at the lower end of the first contact plate, and the first sensor is used to provide feedback on the deformation amount of the first contact plate caused by the lens being pressed. The combination of the first contact plate and the first sensor ensures that when the lens contacts the first contact plate, the first contact plate always produces a certain deformation and the deformation amount remains unchanged.
[0008] Preferably, the contact sensing portion includes a first contact protrusion, which is laterally protruding from the bottom outer wall of the first contact plate, and has an arc-shaped outer end surface. The contact sensing portion protruding from the first contact plate facilitates better contact with the lens, thereby better maintaining a certain degree of deformation. The arc-shaped surface also prevents scratches on the lens surface during rotation.
[0009] Preferably, the contact sensing portion further includes a second contact protrusion; the second contact protrusion and the first contact protrusion are located on opposite sides of the first contact plate, and the second contact protrusion and the first contact protrusion protrude in opposite directions. The second contact protrusion enables the first contact plate to detect both sides of the lens, thereby improving detection convenience and efficiency.
[0010] Preferably, a limit block is vertically disposed on the detection mount; the first contact plate is disposed parallel to a lateral side of the limit block, and a first deformation gap is provided between the first contact plate and a side wall of the limit block. The limit block can enhance the support of the entire detection mount and also facilitates limiting the position of the first contact plate to prevent excessive deformation of the first contact plate.
[0011] Preferably, the sensor module further includes a second contact plate; the second contact plate is disposed parallel to the other lateral side of the stop block, the upper end of the second contact plate being fixedly connected to the detection mount, the lower end of the second contact plate being suspended in the air, and a second deformation gap being defined between the second contact plate and the other sidewall of the stop block; the lower end of the second contact plate is provided with a third contact protrusion that abuts the lens surface; the first sensor is configured to provide feedback on the deformation of the first or second contact plate caused by compression by the lens. By combining the second contact plate with the third contact protrusion, the curvature of the front and rear surfaces of the other side of the lens can be directly detected without manually switching the lens, thereby enhancing detection convenience.
[0012] Preferably, the sensing module further includes a second sensor; the first sensor is mounted on the first contact plate and is configured to provide feedback on the deformation of the first contact plate caused by compression by the lens; the second sensor is mounted on the second contact plate and is configured to provide feedback on the deformation of the first contact plate caused by compression by the lens. By having two sensors provide feedback on their respective contact plates, detection accuracy is further improved.
[0013] Preferably, both the first and second sensors are contact sensors, and the contact sensors are used to provide real-time feedback on the deformation of the contact plate. The first sensor is vertically disposed on the outer wall of the first contact plate, and the second sensor is vertically disposed on the outer wall of the second contact plate. The contact sensors facilitate real-time detection of the deformation of the first and second contact plates.
[0014] Preferably, the lens clamping drive mechanism includes a first clamping rod, a second clamping rod and a drive module; the first clamping rod and the second clamping rod are respectively movably connected to the lateral sides of the drive module, and the first clamping rod and the second clamping rod are coaxially arranged; the drive module is electrically connected to the controller, and the drive module includes a clamping drive unit, a rotation drive unit, a lateral movement unit, a vertical movement unit and a front-to-back movement unit; the clamping drive unit realizes the clamping and loosening of the first clamping rod and the second clamping rod under the action of the controller; the rotation drive unit realizes the synchronous rotation of the first clamping rod and the second clamping rod under the action of the controller; the lateral movement unit realizes the synchronous movement of the first clamping rod and the second clamping rod in the lateral direction under the action of the controller; the vertical movement unit realizes the synchronous movement of the first clamping rod and the second clamping rod in the vertical direction under the action of the controller; and the front-to-back movement unit realizes the synchronous movement of the first clamping rod and the second clamping rod in the front-to-back direction under the action of the controller. The clamping drive unit, the rotation drive unit, the lateral movement unit, the vertical movement unit and the front-to-back movement unit in the drive module realize the clamping, movement positioning and rotation positioning of the lens.
[0015] Preferably, the drive module is also equipped with a displacement encoder. By maintaining a certain deformation of the contact plate while maintaining the deformation constant, the code value on the displacement encoder is fed back to the motion trajectory of the drive module to determine the curvature of the lens. The addition of a displacement encoder to the lens clamping drive mechanism further ensures the accuracy of detecting the curvature of the lens based on the motion trajectory of the drive module. Furthermore, replacing the original sensor detection method with the displacement encoder detection method not only saves costs but also further improves the stability and accuracy of detection, reducing the failure rate and error rate.
[0016] In summary, the advantage of the present invention is that the device, through the contact plate in conjunction with the sensor, can ensure that when the lens rests on the contact plate, the contact plate always produces a certain deformation and ensures that the deformation amount does not change, so that it can cooperate with the existing lens clamping drive mechanism to detect the curvature of the front and back surfaces of the lens during the up and down, left and right displacement and rotation process, subverting the original design of clamping the contact block in conjunction with the locator. The structure is simpler and no high-precision locator is required, which reduces costs while also ensuring the accuracy and stability of detection. The displacement encoder in the lens clamping drive mechanism can further ensure the accuracy of detecting the curvature of the lens by positioning the motion trajectory of the drive module. At the same time, the displacement encoder detection method is used to replace the original locator detection method, which not only saves costs, but also further improves the stability and accuracy of detection, and reduces the failure rate and error rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of a lens curvature detection device of the present invention.
[0018] Figure 2 It is a partial enlarged view of the lens curvature detection device of the present invention.
[0019] Description of reference numerals:
[0020] 1. Bracket; 2. Detection fixing seat; 21. Limit block; 3. First contact plate; 30. First deformation gap; 31. First contact protrusion; 4. Second contact plate; 40. Second deformation gap; 41. Third contact protrusion; 5. First sensor; 6. Second sensor; 7. First clamping rod; 8. Second clamping rod; 9. Drive module. DETAILED DESCRIPTION
[0021] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.
[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.
[0023] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] Example 1
[0026] like Figures 1 to 2As shown, a lens curvature detection device includes a bracket 1, a detection fixing seat 2, a sensor module, a lens clamping drive mechanism and a controller; the detection fixing seat 2 is fixedly arranged on the bracket 1, and the sensor module is installed on the detection fixing seat 2, and the sensor module is provided with a contact sensing portion that abuts against the surface of the lens to be measured, and the sensor module uses the contact sensing portion to feedback the position of the lens contact point (the deformation amount generated after being squeezed); the lens clamping drive mechanism is used to clamp the lens and drive the lens to achieve mobile positioning and rotational positioning; the controller is electrically connected to the sensor module and the lens clamping drive mechanism respectively, and the controller is used to read the state of the sensor module (control the contact sensing portion to produce a certain deformation and ensure that the deformation amount does not change), and control the lens clamping drive mechanism to perform mobile positioning and rotational positioning, and finally obtain the curvature of the surface of one side of the lens through the data fed back by the lens clamping drive mechanism. The device uses the contact sensing part on the sensor module to press against the lens, always maintaining a certain deformation of the contact sensing part and ensuring that the deformation amount does not change. In this way, it can cooperate with the existing lens clamping drive mechanism to detect the curvature of the front and back surfaces of one side of the lens during the movement, positioning and rotation process. This subverts the original design, has a simpler structure, and no longer requires the use of high-precision positioners, reducing costs. At the same time, it can also ensure the accuracy and stability of detection, reducing failure rates and error rates.
[0027] like Figure 1As shown, the sensing module comprises a first contact plate 3 and a first sensor 5. The first contact plate 3 is vertically arranged and located on either side of the detection mount 2. In this embodiment, it is arranged on the left side of the detection mount 2, and the upper end of the first contact plate 3 is fixedly connected to the detection mount 2. The lower end of the first contact plate 3 is suspended. The lower end of the first contact plate 3 is provided with a contact sensing portion that abuts the lens surface. In this embodiment, the first sensor 5 is a contact sensor, which facilitates real-time feedback of the deformation of the first contact plate 3. The first sensor 5 is vertically arranged on the left side wall of the first contact plate 3 and is used to provide real-time feedback of the deformation of the first contact plate 3. In this embodiment, the detection mount 2 and the first contact plate 3 are integrally formed, and the first contact plate 3 is a strain gauge. The lens clamping drive mechanism is used to clamp the lens and drive the lens to achieve mobile positioning and rotational positioning; the controller is electrically connected to the first sensor 5 and the lens clamping drive mechanism, and the controller is used to control the first contact plate 3 to produce a certain deformation while ensuring that the deformation amount does not change, and control the lens clamping drive mechanism to perform mobile positioning and rotational positioning, and finally obtain the curvature of the surface of one side of the lens through the data fed back by the lens clamping drive mechanism. By cooperating with the first contact plate 3 and the first sensor 5, it is possible to ensure that when the lens rests on the first contact plate 3, the first contact plate 3 always produces a certain deformation while ensuring that the deformation amount does not change, thereby being able to cooperate with the existing lens clamping drive mechanism to detect the curvature of the front and rear surfaces of one side of the lens during the mobile positioning and rotation process, subverting the original design, with a simpler structure, eliminating the need for a high-precision positioner, reducing costs, and also ensuring the accuracy and stability of detection, reducing failure rates and error rates.
[0028] like Figures 1 to 2 As shown, a vertically distributed limit block 21 is provided on the middle bottom surface of the detection fixing seat 2, and the first contact plate 3 is arranged parallel to the left side of the limit block 21, and a first deformation gap 30 is provided between the first contact plate 3 and the left side wall of the limit block 21. The limit block 21 can improve the support of the entire detection fixing seat 2, and it is also convenient to limit the first contact plate 3 to prevent the first contact plate 3 from being deformed too much.
[0029] like Figure 2 As shown, the contact sensing portion is a first contact protrusion 31, which protrudes laterally from the bottom left wall of the first contact plate 3. The outer end surface of the first contact protrusion 31 is curved. The protrusion of the first contact protrusion 31 from the first contact plate 3 facilitates better contact with the lens and better forces applied to the first contact protrusion 31, thereby maintaining a certain degree of deformation. Furthermore, the curved surface prevents scratches on the lens surface during rotation.
[0030] like Figure 1 and Figure 2As shown, the lens clamping drive mechanism is a conventional structure for clamping and driving the movement and rotation of lenses. The lens clamping drive mechanism includes a first clamping rod 7, a second clamping rod 8, and a drive module 9. The first clamping rod 7 and the second clamping rod 8 are movably connected to the drive module 9 on either side of the lateral direction, and the first clamping rod 7 and the second clamping rod 8 are coaxially arranged. The drive module 9 is electrically connected to a controller and includes a clamping drive unit, a rotation drive unit, a lateral movement unit, a vertical movement unit, and a forward and backward movement unit. The clamping drive unit, driven by a servo motor or a pneumatic cylinder, clamps and releases the first clamping rod 7 and the second clamping rod 8 under the control of the controller. The rotation drive unit, driven by a servo motor, synchronizes the rotation of the first clamping rod 7 and the second clamping rod 8 under the control of the controller. The lateral movement unit, driven by a servo motor or a pneumatic cylinder, synchronizes the lateral movement of the first clamping rod 7 and the second clamping rod 8 under the control of the controller. The vertical movement unit, driven by a servo motor or a pneumatic cylinder, synchronizes the vertical movement of the first clamping rod 7 and the second clamping rod 8 under the control of the controller. Under the action of the controller, the forward and backward moving unit realizes the synchronous movement of the first clamping rod 7 and the second clamping rod 8 in the forward and backward directions. The forward and backward moving unit is driven by a servo motor or a cylinder. The clamping drive unit, the rotation drive unit, the lateral movement unit, the vertical movement unit and the forward and backward movement unit in the drive module 9 are used to realize the clamping, movement positioning and rotation positioning of the lens. Since the lens clamping drive mechanism is an existing structure, the specific working principle is not described here. The drive module 9 is also provided with a displacement encoder. By maintaining a certain deformation of the contact plate and keeping the deformation amount unchanged, the code value on the displacement encoder is fed back to the motion trajectory of the drive module 9 to determine the curvature of the lens. By adding a displacement encoder to the lens clamping drive mechanism, the accuracy of the curvature of the lens detected by the motion trajectory of the drive module 9 can be further ensured. At the same time, the displacement encoder detection method replaces the original sensor detection method, which not only saves costs, but also further improves the stability and accuracy of the detection, reducing the failure rate and error rate.
[0031] A method for detecting lens curvature includes the following three steps in sequence:
[0032] S1. Clamping the lens: Fix the lens on the lens clamping drive mechanism and move and position the lens by the lens clamping drive mechanism so that the first contact protrusion 31 of the first contact plate 3 is within the contour range of the lens to be measured;
[0033] S2. Positioning of lens surface A: The lens clamping drive mechanism clamps the lens via the first clamping rod 7 and the second clamping rod 8, and drives the lens to move horizontally. During this translation, the controller reads the data status of the first sensor 5 on the first contact plate 3 in real time. When the lens surface contacts the first contact protrusion 31 of the first contact plate 3, the lens is controlled to continue moving toward the first contact protrusion 31 for a distance d and then stops. The distance d is preferably 0.2-0.5 mm. The controller reads the current displacement (deformation) of the first sensor 5 on the first contact plate 3, i.e., the front distance d, and the left and right position x of the lens clamping mechanism.
[0034] S3. Measurement of the curvature of lens surface A: The controller controls the lens clamping drive mechanism to rotate at a uniform speed, and the lens clamping drive mechanism controls the lens to move up and down according to the outer contour of the lens. Due to the curvature of the lens surface, the amount of pressure exerted by the lens on the first contact plate 3 is different at different angles. The controller controls the left and right translation of the lens clamping drive mechanism to keep the displacement of the first sensor 5 unchanged, and enables the controller to read and record the displacement of the first sensor 5 on the first contact plate 3 in real time. The optimal value range of the displacement (deformation) of the first sensor 5 is preferably 0.2-0.5mm; at each rotation angle, the controller records the corresponding angle value θ, the left and right position value x of the lens clamping drive mechanism, the height position y and the displacement d of the first sensor 5; when the lens rotates one circle, the controller can calculate the curvature of surface A of the measured lens based on the recorded data set (θ-xyd).
[0035] This embodiment overturns the original design, has a simpler structure, and no longer requires a high-precision positioner, thus reducing costs. By cooperating with the first contact plate 3 and the first sensor 5, it can be ensured that when the lens rests on the first contact protrusion 31 of the first contact plate 3, the first contact plate 3 always produces a certain deformation and the deformation amount is guaranteed to remain unchanged. Therefore, it can cooperate with the existing lens clamping drive mechanism to detect the curvature of the front and rear surfaces of the lens surface A during the movement, positioning and rotation process. When it is necessary to switch to detecting the curvature of the B surface, it is necessary to remove the lens, turn it over and clamp it on the lens clamping drive mechanism to measure it in the same way.
[0036] Example 2
[0037] The second embodiment differs from the first embodiment in that the contact sensor comprises a first contact protrusion 31 and a second contact protrusion. While the first contact protrusion 31 is provided on the bottom left side of the first contact plate 3 in the first embodiment, a second contact protrusion is added for contacting the lens. The second contact protrusion is provided on the bottom right side of the first contact plate 3, protruding in opposite directions from the first contact protrusion 31. The second contact protrusion and the first contact protrusion 31 are symmetrically arranged and have the same structure. The second contact protrusion protrudes laterally from the first contact plate 3, and the end face of the second contact protrusion is arc-shaped. This embodiment can employ a single contact sensor disposed on one side of the first contact plate 3 to simultaneously detect the A and B surfaces of the lens; alternatively, two contact sensors can be disposed on the left and right sides of the first contact plate 3 to detect the A and B surfaces of the lens, respectively.
[0038] In this embodiment, the second contact protrusion, the first contact protrusion 31, the first contact plate 3 and the detection fixing seat 2 are integrally formed. Through the above structure, one contact plate can detect both sides of the lens, thereby improving the convenience of detection and saving costs. The usage of this embodiment is the same as that of the first embodiment, and can directly detect the AB surface without manual replacement, thereby greatly improving the detection efficiency.
[0039] Example 3
[0040] The difference between the third embodiment and the first embodiment is that a second contact plate 4 is further included. The other structures and usages are the same as those of the first embodiment.
[0041] like Figure 2 As shown, the second contact plate 4 is vertically mounted on the detection mount 2 and spaced parallel to the right side of the stop block 21. The upper end of the second contact plate 4 is fixedly connected to the detection mount 2, while the lower end of the second contact plate 4 is suspended. A third contact protrusion 41 is disposed at the lower end of the second contact plate 4, which abuts the lens surface. The third contact protrusion 41 and the first contact protrusion 31 are disposed in opposite directions, and a second deformation gap 40 is provided between the second contact plate 4 and the right side wall of the stop block 21. The detection mount 2, the first contact plate 3, and the second contact plate 4 are integrally formed and bilaterally symmetrical. Both the first contact plate 3 and the second contact plate 4 are strain gauges. The stop block 21, the first contact plate 3, and the second contact plate 4 are disposed in parallel. The first sensor 5 facilitates real-time detection of the deformation of the first and second contact plates 3 and 4 by means of a contact sensor.
[0042] A third contact protrusion 41 is laterally protruded from the bottom outer wall of the second contact plate 4. This protrusion from the second contact plate 4 facilitates better contact with the lens, thereby maintaining a certain degree of deformation. The outer end surface of the third contact protrusion 41 is curved, which prevents scratches on the lens surface during rotation.
[0043] like Figure 1 and Figure 2 As shown, the detection holder 2, first contact plate 3, first contact protrusion 31, second contact plate 4, and third contact protrusion 41 are integrally formed, with the first contact plate 3 and second contact plate 4 being bilaterally symmetrical and identical in structure. This integral molding facilitates manufacturing and ensures the strength and hardness of the overall structure, preventing connection breakage and further extending service life.
[0044] This embodiment uses the same method as in Example 1, but adds S4, measuring the curvature of lens surface B. The specific process is as follows: after measuring the curvature of lens surface A, the curvature of lens surface B is measured. The controller controls the movement of the lens clamping drive mechanism to disengage the lens from the first contact plate 3 on surface A and move the lens to the second contact plate 4 on the other side, surface B. Following steps S1 to S3, surface B detection is continued, and the curvature of lens surface B is calculated. A single first sensor 5 can detect both surfaces A and B, greatly improving detection efficiency.
[0045] In this embodiment, the second contact plate 4 can be used to clamp the lens and drive the lens to move through the lens clamping drive mechanism, so that the right side of the lens can first be placed against the first contact protrusion 31 of the first contact plate 3 for detection. After completion, the lens is moved to the second contact plate 4, so that the left side of the lens is placed against the third contact protrusion 41 of the second contact plate 4. The first sensor 5 can directly detect both sides of the lens without the need for manual surface replacement, further improving the convenience and practicality of detection.
[0046] Example 4
[0047] The fourth embodiment differs from the third embodiment in that it further includes a second sensor 6 , and the other structures and usages are the same as those of the third embodiment.
[0048] like Figure 2As shown, the first sensor 5 is arranged on the first contact plate 3, and the first sensor 5 facilitates real-time detection of the deformation of the first contact plate 3 by using a contact sensor. The second sensor 6 is a contact sensor, and facilitates real-time detection of the deformation of the second contact plate 4 by using a contact sensor. The second sensor 6 is arranged on the right side wall of the second contact plate 4, and the second sensor 6 is used to provide real-time feedback on the deformation of the second contact plate 4. The second sensor 6 is electrically connected to the controller, and the controller is used to control the second contact plate 4 to produce a certain deformation and ensure that the deformation does not change. By combining the second contact plate 4 with the second sensor 6, the curvature of the front and back surfaces of the other side of the lens can be directly detected without manually changing the lens to another side, thereby improving the convenience of detection. The first sensor 5 and the second sensor 6 respectively feedback the deformation of the first contact plate 3 and the second contact plate 4, realizing one-to-one detection, further improving the accuracy and stability of detection.
[0049] In summary, the advantage of the present invention is that the device, through the contact plate in conjunction with the sensor, can ensure that when the lens is against the contact plate, the contact plate always produces a certain deformation and ensures that the deformation amount does not change, so that it can cooperate with the existing lens clamping drive mechanism to detect the curvature of the front and back surfaces of the lens during the up, down, left, and right displacement and rotation process, subverting the original design, with a simpler structure and no need to use a high-precision positioner, reducing costs, while also ensuring the accuracy and stability of detection, reducing failure rates and error rates.
[0050] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.
[0051] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.
[0052] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A lens curvature detection device, characterized in that: The invention comprises a detection fixing seat (2), a sensor module, a lens clamping drive mechanism and a controller; the sensor module is mounted on the detection fixing seat (2), the sensor module is provided with a contact sensing portion that contacts the surface of the lens to be tested, and the sensor module feeds back the position of the lens contact point through the contact sensing portion; the lens clamping drive mechanism is used to clamp the lens and drive the lens to achieve mobile positioning and rotational positioning; the controller is electrically connected to the sensor module and the lens clamping drive mechanism respectively, and the controller is used to read the state of the sensor module and control the lens clamping drive mechanism to perform mobile positioning and rotational positioning, and finally obtain the curvature of the surface of one side of the lens through the data fed back by the lens clamping drive mechanism.
2. The lens curvature detection device according to claim 1, characterized in that: The sensing module comprises a first contact plate (3) and a first sensor (5); the upper end of the first contact plate (3) is fixedly connected to the detection fixing seat (2), the lower end of the first contact plate (3) is suspended, the contact sensing portion is arranged at the lower end of the first contact plate (3), and the first sensor (5) is used to feedback the deformation amount generated by the first contact plate (3) after being squeezed by the lens.
3. The lens curvature detection device according to claim 2, characterized in that: The contact sensing portion comprises a first contact protrusion (31), the first contact protrusion (31) being arranged on the bottom outer side wall of the first contact plate (3) in a transversely protruding manner, and the outer end surface of the first contact protrusion (31) being arc-shaped.
4. The lens curvature detection device according to claim 3, characterized in that: The contact sensing portion further comprises a second contact protrusion; the second contact protrusion and the first contact protrusion (31) are respectively located on two lateral sides of the first contact plate (3), and the second contact protrusion and the first contact protrusion (31) protrude in opposite directions.
5. The lens curvature detection device according to claim 2, characterized in that: A limit block (21) is vertically arranged on the detection fixing seat (2); the first contact plate (3) is arranged parallel to a lateral side of the limit block (21), and a first deformation gap (30) is provided between the first contact plate (3) and a side wall of the limit block (21).
6. The lens curvature detection device according to claim 5, characterized in that: The sensing module further comprises a second contact plate (4); the second contact plate (4) is arranged in parallel on the other lateral side of the limit block (21); the upper end of the second contact plate (4) is fixedly connected to the detection fixing seat (2); the lower end of the second contact plate (4) is suspended, and a second deformation gap (40) is provided between the second contact plate (4) and the other side wall of the limit block (21); the lower end of the second contact plate (4) is provided with a third contact protrusion (41) abutting against the surface of the lens; the first sensor (5) is used to feedback the deformation amount generated by the first contact plate (3) or the second contact plate (4) after being squeezed by the lens.
7. The lens curvature detection device according to claim 6, characterized in that: The sensing module further comprises a second sensor (6); the first sensor (5) is arranged on the first contact plate (3), and the first sensor (5) is used to feedback the deformation amount of the first contact plate (3) caused by being squeezed by the lens; the second sensor (6) is arranged on the second contact plate (4); the second sensor (6) is used to feedback the deformation amount of the first contact plate (3) caused by being squeezed by the lens.
8. The lens curvature detection device according to claim 7, characterized in that: The first sensor (5) and the second sensor (6) are both contact sensors, and the contact sensors are used to provide real-time feedback of the deformation of the contact plate; the first sensor (5) is vertically arranged on the outer wall of the first contact plate (3), and the second sensor (6) is vertically arranged on the outer wall of the second contact plate (4).
9. The lens curvature detection device according to claim 1, characterized in that: The lens clamping drive mechanism comprises a first clamping rod (7), a second clamping rod (8) and a drive module (9); the first clamping rod (7) and the second clamping rod (8) are respectively movably connected to the lateral sides of the drive module (9), and the first clamping rod (7) and the second clamping rod (8) are coaxially arranged; the drive module (9) is electrically connected to the controller, and the drive module (9) comprises a clamping drive unit, a rotation drive unit, a lateral movement unit, a vertical movement unit and a front-to-back movement unit; the clamping drive unit realizes the clamping and loosening of the first clamping rod (7) and the second clamping rod (8) under the action of the controller; the rotation drive unit realizes the synchronous rotation of the first clamping rod (7) and the second clamping rod (8) under the action of the controller; the lateral movement unit realizes the synchronous movement of the first clamping rod (7) and the second clamping rod (8) in the lateral direction under the action of the controller; the vertical movement unit realizes the synchronous movement of the first clamping rod (7) and the second clamping rod (8) in the vertical direction under the action of the controller; and the front-to-back movement unit realizes the synchronous movement of the first clamping rod (7) and the second clamping rod (8) in the front-to-back direction under the action of the controller.
10. The lens curvature detection device according to claim 9, characterized in that: The driving module (9) is also provided with a displacement encoder, which determines the curvature of the lens by feeding back the code value on the displacement encoder to the motion trajectory of the driving module (9) by maintaining a certain deformation of the contact plate and keeping the deformation constant.