CN117452658A - Imaging correction device, imaging correction method and laminating equipment - Google Patents

Abstract

The application provides an imaging correction device, an imaging correction method and laminating equipment. The imaging correction device comprises a correction platform, three imagers and a plurality of data processing modules. The correction platform is used for carrying the object and can move and rotate the object. The three imagers are respectively positioned in three vertical directions of the correction platform. Each module is used for extracting image data in imaging, integrating the image data, obtaining offset data and converting the offset data so as to correct the position and the form of the object. The imaging correction method corrects the object by the imaging correction device. The attaching device corrects the object by an imaging correction method and attaches the object. The imaging correction device, the imaging correction method and the laminating equipment all achieve the purpose of improving the correction precision of the position form of the object.

Description

Imaging correction device, imaging correction method and laminating equipment

Technical Field

The application relates to the field of lenses, in particular to an imaging correction device, an imaging correction method and laminating equipment.

Background

At present, in the VR glasses laminating process, laminating equipment needs laminate transparent 3D curved surface product (lens) material loading back with other parts, need detect the outline form and the whole position deviation of this transparent 3D product before laminating to need carry out position form correction to transparent 3D curved surface product, in order to ensure that two curved surface angles and form keep unanimous when laminating, and then guarantee laminating precision. Based on the vision correction of 3D product, line laser imaging or phase shift method (structured light) imaging is commonly used at present, but because the product is transparent material, optical fiber passing rate is high when scanning transparent material, and when light is conducted above the product, partial surface shape can not image, can only penetrate the background of product bottom, and the surface is liable to form bright spot, leads to 3D imaging failure to can produce vibrations in the scanning removal process, influence the precision, and then influence the testing result.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an imaging correction apparatus and an imaging correction method capable of improving positional form correction accuracy for a transparent material, and a bonding apparatus for bonding corrected objects.

An embodiment of the application provides an imaging correction device, which comprises a correction platform, a first imager, a second imager, a third imager, a data extraction module, a data integration module, a data comparison module and a data conversion module. The correction platform is used for carrying the object and can move and rotate the object. The first imager is positioned at one side of the correction platform along the first horizontal direction and is used for imaging the object along the first horizontal direction. The second imager is positioned at one side of the correction platform along a second horizontal direction and is used for imaging the object along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. The third imager is positioned above the correction platform and is used for imaging the object along the vertical direction. The data extraction module extracts image data in imaging of the first imager, the second imager and the third imager. The data integration module integrates the image data to obtain the current position form data of the object. The data comparison module compares the position form data with a preset value to obtain offset data. The data conversion module converts the offset data into a moving distance or a rotating angle of the correction platform so as to correct the position and the shape of the object.

According to the imaging correction device, the first imager, the second imager and the third imager are used for shooting along three perpendicular directions, and the data extraction module, the data integration module, the data comparison module and the data conversion module are used for analyzing the distance required to be moved and the angle required to be rotated of the object, so that the position and the shape of the object are corrected to the required state, and finally the purpose of improving the correction precision of the position and the shape of the object is achieved.

In some embodiments, the correction platform includes a carrying platform, a first translation mechanism, a second translation mechanism, a first rotation mechanism, a second rotation mechanism, and a third rotation mechanism, where the carrying platform is used to carry an object, the first translation mechanism drives the carrying platform to move along a first horizontal direction, the second translation mechanism drives the carrying platform to move along a second horizontal direction, the first rotation mechanism drives the carrying platform to rotate along a vertical direction, the second rotation mechanism drives the carrying platform to rotate along the first horizontal direction, and the third rotation mechanism drives the carrying platform to rotate along a second horizontal direction.

In some embodiments, the correction platform includes a loading platform, a first translation mechanism, a second translation mechanism, a first rotation mechanism and three telescopic mechanisms, the loading platform is used for loading objects, the three telescopic mechanisms support the loading platform together, the three telescopic mechanisms are arranged on the first rotation mechanism, the first translation mechanism drives the loading platform to move along a first horizontal direction, the second translation mechanism drives the loading platform to move along a second horizontal direction, the first rotation mechanism drives the loading platform to rotate along a vertical direction, and the three telescopic mechanisms can respectively extend and retract to drive the loading platform to change the inclination angle.

In some embodiments, the imaging correction apparatus further includes an adjusting mechanism capable of adjusting the first, second and third imagers to be lifted or moved in a horizontal direction, respectively, so as to adjust positions of the first, second and third imagers relative to the correction platform.

In some embodiments, the imaging correction apparatus further comprises three fiducial markers positioned on opposite sides of the first, second and third imagers, respectively, the first, second and third imagers determining the desired fixed location based on the fiducial markers.

In some embodiments, the imaging correction device further includes a data memory module and a data statistics module, the data memory module is capable of memorizing a plurality of offset data, and the data statistics module is capable of counting the offset data in the data memory module and obtaining a probability distribution of a position morphology of the object.

In some embodiments, the imaging calibration apparatus further includes a transfer mechanism for capturing the object and placing the object on the calibration platform, and a transfer control module for calibrating a transfer position of the object according to the probability distribution.

An embodiment of the present application further provides an imaging correction method, where the imaging correction device in any one of the embodiments corrects a position and a shape of an object, including: placing the object on a correction platform; imaging the object on the correction platform by the first imager, the second imager and the third imager; the data extraction module extracts image data in imaging of the first imager, the second imager and the third imager; the data integration module integrates the image data to obtain the current position form data of the object; the data comparison module compares the position form data with a preset value to obtain offset data; the data conversion module converts the offset data into a moving distance or a rotating angle required by the correction platform so as to correct the position and the shape of the object. The imaging correction method also achieves the purpose of improving the correction precision of the position form of the object.

In some embodiments, the imaging correction method further comprises: after the correction platform corrects the object, the first imager, the second imager and the third imager image the object on the correction platform again, and if the offset data is smaller than a preset error value, the correction is completed; if the offset data is larger than the preset error value, the correction platform corrects the position or the form of the object again according to the new offset data until the offset data is smaller than the preset error value.

In an embodiment of the present application, a bonding apparatus is further provided, where the position and the shape of the object are corrected according to the imaging correction method in any one of the above embodiments, and the corrected object can be bonded to the to-be-bonded object. The purpose of promotion laminating precision has been realized to above-mentioned laminating equipment.

Drawings

Fig. 1 is a front view of an imaging correction apparatus in an embodiment of the present application.

Fig. 2 is a top view of the imaging correction apparatus of fig. 1.

Fig. 3 is a front view of an imaging correction apparatus in another embodiment of the present application.

Fig. 4 is a flowchart of an imaging correction method according to an embodiment of the present application.

Description of the main reference signs

Imaging correction apparatus 100

Article 200

Correction platform 10

Shape mark 10a

Bearing table 11

Telescoping mechanism 12

First rotation mechanism 13

First translation mechanism 14

Second translation mechanism 15

First imager 20

Second imager 30

Third imager 40

Data extraction module 50

Data integration module 60

Data comparison module 70

Data conversion module 80

Imaging correction method 300

Detailed Description

The following description of the technical solutions of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without collision.

Referring to fig. 1, an imaging correction apparatus 100 for correcting a position and an angle of an object 200 is provided in an embodiment of the present application. The imaging correction apparatus 100 includes a correction stage 10, a first imager 20, a second imager 30, and a third imager 40. The calibration platform 10 is used for carrying and fixing the object 200, and is capable of moving and rotating the object 200. The first imager 20 is located at one side of the correction stage 10 along a first horizontal direction (X direction) for photographing and imaging the object 200 along the X direction. The second imager 30 is located at one side of the correction stage 10 in the second horizontal direction (Y direction) for photographing and imaging the object 200 in the Y direction. Wherein the second horizontal direction is perpendicular to the first horizontal direction. The third imager 40 is located above the calibration platform 10 for photographing and imaging the object 200 in a vertically downward direction (Z direction), and the vertical direction passes through an intersection point of the first horizontal direction and the second horizontal direction, so that the three imagers are aligned with the center of the object 200. The first imager 20, the second imager 30 and the third imager 40 can respectively acquire 2D images of three vertical angles of the object 200, so that the 3D form of the object 200 can be comprehensively determined, and particularly the position state and the angle state of the object 200 can be accurately corrected even if the object 200 is made of transparent materials due to the manner of avoiding scanning. By way of illustrative example, the object 200 is a transparent curved lens and the imager is a camera.

The imaging correction apparatus 100 further includes a data extraction module 50, a data integration module 60, a data comparison module 70, and a data conversion module 80. The data extraction module 50 is configured to extract three corresponding image data, such as a size of a contour of the object 200, a color of each region, and a coordinate point corresponding to each portion in each photograph, from the photographs imaged by the first imager 20, the second imager 30, and the third imager 40. The data integration module 60 is used for integrating the extracted three image data, and obtaining the position form data of the current actual 3D of the object 200 according to an algorithm. The data comparison module 70 is configured to compare the integrated position and shape data with a preset value (a standard value corresponding to the object 200 in the target state), and obtain offset data of the current state of the object 200 compared with the standard state according to an algorithm, that is, offset data to be compensated for by the object 200. The data conversion module 80 is configured to convert the offset data into data of a movement distance or a rotation angle that can be identified by the calibration platform 10, so that the calibration platform 10 drives the object 200 to move or rotate to a desired position and shape according to the data. It will be appreciated that the calibration platform 10, the first imager 20, the second imager 30, and the third imager 40, the data extraction module 50, the data integration module 60, the data comparison module 70, and the data conversion module 80 are communicatively or electrically connected to each other for data transmission.

In some embodiments, correction platform 10 includes a carrier, a first translation mechanism, a second translation mechanism, a first rotation mechanism, a second rotation mechanism, and a third rotation mechanism (not shown). The carrier is used for carrying the object 200. The bearing table is provided with a profiling surface (jig) which is attached to the 3D curved surface of the object 200 and is used for fully contacting the surface of the object 200 to more stably fix the object 200, and the profiling surface is made of silica gel material to protect a product. The profiling surface has vacuum adsorption holes for adsorbing the object 200, preventing the product from falling off when moving and rotating. The first translation mechanism is used for driving the bearing table to move along a first horizontal direction. The second translation mechanism is used for driving the bearing platform to move along a second horizontal direction. The first rotating mechanism is used for driving the bearing table to rotate along the axis in the vertical direction. The second rotating mechanism is used for driving the bearing table to rotate along the first horizontal direction. The third rotating mechanism is used for driving the bearing table to rotate along the second horizontal direction. The calibration platform 10 provides five degrees of freedom adjustment capability for the object 200. The correction platform 10 with the structure can use devices such as linear screw drive, servo motor and the like to ensure the precision of movement and rotation, and the division of work of each degree of freedom is clear, so that the classification and calculation of data are convenient.

In other embodiments, the calibration platform 10 includes a carrying platform 11, a first translation mechanism 14, a second translation mechanism 15, a first rotation mechanism 13, and three telescoping mechanisms 12. The carrying table 11 is used for carrying an object 200. Three telescopic mechanisms 12 are used to support the carrying floor 11 in common. The three telescopic mechanisms 12 are connected to three points at the bottom of the carrying platform 11, and the three points form a triangle structure. Three telescopic mechanisms 12 are provided on the first rotation mechanism 13. The first translation mechanism 14 drives the stage 11 to move in the first horizontal direction. The second translation mechanism 15 drives the stage 11 to move in the second horizontal direction. The first rotation mechanism 13 drives the bearing table 11 to rotate along the axis of the vertical direction. The three telescopic mechanisms 12 can be respectively and independently telescopic to drive the carrying platform 11 to change the inclination angle of the carrying platform, and further change the angle of the object 200. Likewise, the calibration platform 10 provides five degrees of freedom adjustment capability for the object 200. The three telescopic mechanisms 12 can be structured to promote the corresponding speed of the carrying platform 11, and can simplify the structure, thereby facilitating maintenance.

Optionally, in any embodiment, the profiling fixture on the bearing platform and the bearing platform are custom processing components, and the profiling fixture and the bearing platform are tightly connected and fixed by using embedded screws so as to replace different types of fixtures to adapt to different products. In addition, the surface of the carrying table and the side surface of the carrying table are added with special and specific shape marks 10a during processing, and during imaging, the first imager 20, the second imager 30 and the third imager 40 can grasp the position and form of the product and grasp the position and form relationship between the product and the shape marks 10a at the same time, so that the accuracy of calculation is ensured. For example, if the data comparison module 70 compares the obtained position relationship value between the product and the shape mark 10a with the preset standard position relationship value, it indicates that the correction is wrong and needs to be corrected again; if the data comparison module 70 compares the obtained position relationship value between the product and the shape mark 10a with the preset standard position relationship value, the correction is correct.

In some embodiments, the imaging correction apparatus 100 further includes a first adjustment mechanism (not shown). The adjusting mechanism can respectively adjust the first imager 20, the second imager 30 and the third imager 40 to respectively and independently lift or move along the horizontal direction, so as to adjust the positions of the first imager 20, the second imager 30 and the third imager 40 relative to the correction platform 10 before detection, thereby facilitating zeroing, resetting and the like before detection.

Alternatively, in some embodiments, the first imager 20, the second imager 30, and the third imager 40 include a mobile telescoping assembly and a light source assembly, respectively. Before the photographing and imaging actions start, the first imager 20, the second imager 30 and the third imager 40 are driven by the first adjusting mechanism to move to the initial photographing position, then the moving telescopic assembly is driven to perform telescopic (macro) to the target photographing position, and after the definition and the lens proportion reach the standard, the imaging can be performed after the light source is lightened.

Further, in some embodiments, the imaging correction apparatus 100 further includes three fiducial markers (not shown). The three fiducial markers are located on opposite sides of the first imager 20, the second imager 30, and the third imager 40, respectively. Before detection, the first imager 20, the second imager 30 and the third imager 40 take a picture of the corresponding reference marks, and determine whether the reference marks are at the required fixed positions according to whether the reference marks are at the standard positions on the picture.

In some embodiments, the imaging correction apparatus 100 further includes a data memory module and a data statistics module (not shown). The data memory module is capable of memorizing offset data corresponding to a plurality of objects 200. The data statistics module is capable of counting a plurality of offset data in the data memory module and obtaining a probability distribution of the position morphology of the object 200.

Further, the image correction apparatus 100 further includes a transfer mechanism and a transfer control module (not shown). The transfer mechanism is used for grabbing the object 200 and placing the object 200 on the calibration platform 10. The transfer control module can correct the transfer position of the transfer mechanism for each article 200 according to the probability distribution. Specifically, if the probability distribution shows that the objects 200 are biased towards the X direction each time they are placed on the calibration platform 10, and the offset distance value is equal to L, the transfer control module can make the transfer mechanism offset the distance of L in the opposite direction when the objects 200 are placed next time, so as to compensate the deviation of each time the objects 200 are placed, thereby improving the calibration speed of each object 200, and further improving the overall operation efficiency.

An embodiment of the present application further provides an imaging correction method 300, which corrects the position and shape of the object 200 by the imaging correction device 100. The imaging correction method 300 includes:

s1: placing the object 200 on the calibration platform 10;

s2: the first imager 20, the second imager 30 and the third imager 40 image the object 200 on the correction stage 10;

s3: the data extraction module 50 extracts image data in imaging of the first imager 20, the second imager 30, and the third imager 40;

s4: the data integration module 60 integrates the image data to obtain the current actual position form data of the object 200;

s5: the data comparison module 70 compares the position form data with a preset value to obtain offset data;

s6: the data conversion module 80 converts the offset data into a movement distance or a rotation angle required by the calibration platform 10 to calibrate the position and shape of the object 200.

The imaging correction method 300 also achieves the purpose of improving the correction accuracy of the position form of the object 200 by the imaging correction device 100.

The imaging correction method 300 further includes S7: after the correction platform 10 corrects the object 200, the first imager 20, the second imager 30 and the third imager 40 image the object 200 on the correction platform 10 again, and acquire new offset data again, if the new offset data is smaller than the preset error value, the correction is completed, which means that the object 200 is in the target state; if the new offset data is greater than the preset error value, which means that the object 200 still needs to be further corrected, the correction platform 10 corrects the position or the shape of the object 200 again according to the new offset data, and repeats the above process until the offset data is less than the preset error value.

In some embodiments, a bonding apparatus (not shown) is provided to correct the position and shape of the object 200 according to the imaging correction method 300, and the corrected object 200 can be bonded to the object to be bonded. Specifically, the laminating apparatus may include a film laminating mechanism or a pressing mechanism, etc. for laminating the film on the article 200 after correction or pressing other assembly components together with the article 200. The laminating apparatus can achieve the purpose of improving laminating accuracy by the correction method 300.

In addition, those of ordinary skill in the art will recognize that the above embodiments are presented for purposes of illustration only and are not intended to be limiting, and that any suitable modification or variation of the above embodiments is within the scope of the disclosure.

Claims (10)

1. An imaging correction apparatus, characterized by comprising:

the correction platform is used for bearing an object and can move and rotate the object;

a first imager positioned at one side of the correction platform along a first horizontal direction and used for imaging the object along the first horizontal direction;

the second imager is positioned at one side of the correction platform along a second horizontal direction and is used for imaging the object along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;

the third imager is positioned above the correction platform and is used for imaging the object along the vertical direction;

a data extraction module for extracting image data in imaging of the first imager, the second imager and the third imager;

the data integration module integrates the image data to obtain the current position form data of the object;

the data comparison module is used for comparing the position form data with a preset value to obtain offset data; and

and the data conversion module is used for converting the offset data into the moving distance or the rotating angle of the correction platform so as to correct the position and the shape of the object.

2. The imaging correction apparatus of claim 1, wherein: the correction platform comprises a bearing table, a first translation mechanism, a second translation mechanism, a first rotation mechanism, a second rotation mechanism and a third rotation mechanism, wherein the bearing table is used for bearing an object, the first translation mechanism drives the bearing table to move along the first horizontal direction, the second translation mechanism drives the bearing table to move along the second horizontal direction, the first rotation mechanism drives the bearing table to rotate along the vertical direction, the second rotation mechanism drives the bearing table to rotate along the first horizontal direction, and the third rotation mechanism drives the bearing table to rotate along the second horizontal direction.

3. The imaging correction apparatus of claim 1, wherein: the correction platform comprises a bearing table, a first translation mechanism, a second translation mechanism, a first rotating mechanism and three telescopic mechanisms, wherein the bearing table is used for bearing objects, the three telescopic mechanisms support the bearing table jointly, the three telescopic mechanisms are arranged on the first rotating mechanism, the first translation mechanism drives the bearing table to move along the first horizontal direction, the second translation mechanism drives the bearing table to move along the second horizontal direction, the first rotating mechanism drives the bearing table to rotate along the vertical direction, and the three telescopic mechanisms can respectively extend and retract to drive the bearing table to change the inclination angle.

4. The imaging correction apparatus of claim 1, wherein: the imaging correction device further comprises an adjusting mechanism, wherein the adjusting mechanism can respectively adjust the first imager, the second imager and the third imager to be lifted or moved along the horizontal direction so as to adjust the positions of the first imager, the second imager and the third imager relative to the correction platform.

5. The imaging correction apparatus of claim 1, wherein: the imaging correction device further comprises three reference marks, wherein the three reference marks are respectively positioned on opposite sides of the first imager, the second imager and the third imager, and the first imager, the second imager and the third imager determine positions to be fixed according to the reference marks.

6. The imaging correction apparatus of claim 1, wherein: the imaging correction device further comprises a data memory module and a data statistics module, wherein the data memory module can memorize a plurality of offset data, and the data statistics module can count the offset data in the data memory module and obtain probability distribution of the position form of the object.

7. The imaging correction apparatus of claim 6, wherein: the imaging correction device further comprises a transfer mechanism and a transfer control module, wherein the transfer mechanism is used for grabbing the object and placing the object on the correction platform, and the transfer control module corrects the transfer position of the object according to the probability distribution.

8. An imaging correction method, wherein the position and shape of an object are corrected by the imaging correction apparatus according to any one of claims 1 to 7, comprising:

placing the object on the calibration platform;

the first imager, the second imager, and the third imager image the object on the correction platform; the data extraction module extracts image data in imaging of the first imager, the second imager and the third imager;

the data integration module integrates the image data to obtain the current position form data of the object;

the data comparison module compares the position form data with the preset value to obtain offset data; and

the data conversion module converts the offset data into a movement distance or a rotation angle required by the correction platform so as to correct the position and the shape of the object.

9. The imaging correction method as set forth in claim 8, further comprising: after the correction platform corrects the object, the first imager, the second imager and the third imager image the object on the correction platform again, and if the offset data is smaller than a preset error value, the correction is completed; and if the offset data is larger than the preset error value, the correction platform corrects the position or the form of the object again according to the new offset data until the offset data is smaller than the preset error value.

10. A laminating equipment, characterized in that: the method according to any one of claims 8 to 9, wherein the position and shape of the article are corrected, and the corrected article can be attached to the article to be attached.