CN114594611A - Active calibration device and method thereof - Google Patents
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- CN114594611A CN114594611A CN202011412344.5A CN202011412344A CN114594611A CN 114594611 A CN114594611 A CN 114594611A CN 202011412344 A CN202011412344 A CN 202011412344A CN 114594611 A CN114594611 A CN 114594611A
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Abstract
An active calibration device and method thereof are used for actively calibrating a module to be calibrated, wherein the module to be calibrated is a small view field module or a large view field module. The active alignment device includes an active alignment platform and a switchable reticle assembly. The active calibration platform comprises a module tool for installing the module to be calibrated. The switchable target assembly comprises a plane light source target and a collimator target, and the plane light source target and the collimator target are switchably arranged above the active calibration platform, wherein when the plane light source target is switched to correspond to the module tooling of the active calibration platform, the active calibration device is in a small-field-of-view calibration state and is used for actively calibrating the small-field-of-view module, and when the collimator target is switched to correspond to the module tooling of the active calibration platform, the active calibration device is in a large-field-of-view calibration state and is used for actively calibrating the large-field-of-view module.
Description
Technical Field
The invention relates to the technical field of module calibration, in particular to an active calibration device and method.
Background
With the rapid development of science and technology, people have higher and higher imaging requirements on electronic products with imaging functions. Particularly, the smart phone with fire and heat is developed at present, so that the product requirement of small volume and high imaging quality is pursued, which undoubtedly has strict requirements on the processing and assembly of the product. When these micro products are assembled, there will be some error to affect the image quality, so Active Alignment (AA) operation is needed to adjust the relative position relationship between the optical lens and the image sensor, so as to achieve the best imaging effect.
However, the conventional active calibration device usually employs a planar light source, and the field angle of the planar light source is generally controlled within 90 °, which is very disadvantageous for the active calibration of a large wide-angle module, because the distance between the large wide-angle module and the planar light source needs to be greatly increased during the active calibration, which causes that the size of the conventional active calibration device is difficult to be standardized, the size of the device cannot be unified, the floor space of the conventional active calibration device is large, and it is difficult to perform the active calibration of the large wide-angle module in a small place.
Particularly, since the field of view of the conventional module is very wide, the field of view can cover 0 ° to 180 °, and the conventional active calibration device is completely incompatible with the active calibration with the field of view of 0 ° to 180 ° due to the use of the planar light source, it is a problem that how to make the active calibration device compatible with the module calibration with the field of view of 0 ° to 180 °.
Disclosure of Invention
An advantage of the present invention is to provide an active calibration apparatus and method thereof, which can be compatible with the active calibration of a module having a field angle range of 0 ° to 180 °, and is helpful to improve the versatility of the active calibration apparatus.
Another advantage of the present invention is to provide an active calibration apparatus and method thereof, wherein in an embodiment of the present invention, the active calibration apparatus is compatible with a plane light source and a collimator, so as to actively calibrate both a small field of view module and a large field of view module, which helps to expand the versatility of the active calibration apparatus.
Another advantage of the present invention is to provide an active calibration apparatus and a method thereof, wherein in an embodiment of the present invention, the active calibration apparatus can be conveniently switched between a small field of view calibration state and a large field of view calibration state, so as to improve the versatility of the active calibration apparatus and improve the operability and the active calibration efficiency of the active calibration apparatus.
Another advantage of the present invention is to provide an active calibration device and a method thereof, wherein in an embodiment of the present invention, the active calibration device can reduce difficulty in aligning the collimator with the plane light source and improve accuracy of aligning the collimator with the plane light source, thereby improving accuracy of active calibration of the active calibration device.
Another advantage of the present invention is to provide an active calibration apparatus and a method thereof, wherein in an embodiment of the present invention, the active calibration apparatus can greatly shorten the time required for the active calibration of the large-field module by using the planar light source, thereby greatly improving the efficiency of the active calibration, and being helpful to meet the current market demand of high efficiency and low cost.
Another advantage of the present invention is to provide an active calibration apparatus and method thereof, wherein the apparatus does not need to adopt a complicated structure and a large amount of calculation, and has low requirements for hardware and software. Therefore, the present invention successfully and effectively provides a solution to not only provide an active calibration apparatus and method thereof, and an electronic device, but also increase the practicality and reliability of the active calibration apparatus and method thereof, and the electronic device.
To achieve at least one of the above advantages or other advantages and objectives, the present invention provides an active calibration apparatus for actively calibrating a module to be calibrated, wherein the module to be calibrated is a small field module or a large field module, and the active calibration apparatus includes:
the active calibration platform comprises a module tool used for installing the module to be calibrated; and
a switchable reticle assembly, wherein the switchable reticle assembly comprises a planar light source reticle and a collimator reticle, and the planar light source reticle and the collimator reticle are switchably disposed above the active calibration platform, wherein when the planar light source reticle is switched to correspond to the module tooling of the active calibration platform, the active calibration device is in a small field of view calibration state for actively calibrating the small field of view module, and when the collimator reticle is switched to correspond to the module tooling of the active calibration platform, the active calibration device is in a large field of view calibration state for actively calibrating the large field of view module.
According to an embodiment of the present application, the switchable reticle assembly further comprises a reticle switching bracket, wherein the planar light source reticle and/or the collimator reticle is mounted to the reticle switching bracket to change the pose of the planar light source reticle and the collimator reticle by the reticle switching bracket such that the planar light source reticle and the collimator reticle are switched to each other to correspond to the module tooling of the active calibration platform, respectively.
According to an embodiment of the present application, the reticle switching bracket is a moving mechanism, wherein the planar light source reticle and the collimator reticle are respectively and fixedly mounted on the moving mechanism, so that the planar light source reticle and the collimator reticle are moved by the moving mechanism, and the planar light source reticle and the collimator reticle are driven by the moving mechanism to respectively correspond to the module tooling of the active calibration platform.
According to an embodiment of the present application, the moving mechanism is a translation mechanism, wherein the planar light source panel and the collimator panel are mounted side by side to the translation mechanism to synchronously translate the planar light source panel and the collimator panel by the translation mechanism, so that positions of the planar light source panel and the collimator panel are changed to respectively correspond to the module tooling of the active calibration platform.
According to an embodiment of the present application, the translation mechanism includes a gantry and a pair of linear rails, wherein the planar light source panel and the collimator panel are respectively mounted in the gantry in an overhanging manner, and the gantry is slidably disposed on the linear rails for sliding along the linear rails to drive the planar light source panel and the collimator panel to translate.
According to an embodiment of the present application, the moving mechanism is a rotating mechanism, wherein the planar light source panel and the collimator panel are fixedly mounted on the rotating mechanism, so that the planar light source panel and the collimator panel are synchronously rotated by the rotating mechanism, so that the poses of the planar light source panel and the collimator panel are changed to respectively correspond to the module tooling of the active calibration platform.
According to an embodiment of the present application, the rotating mechanism includes a base frame and a horizontal rotating shaft, wherein the horizontal rotating shaft is rotatably installed on the base frame, and the planar light source panel and the collimator panel are installed on the horizontal rotating shaft in a staggered manner, so as to drive the planar light source panel and the collimator panel to rotate synchronously through the horizontal rotating shaft, such that the orientations of the planar light source panel and the collimator panel are changed to respectively correspond to the module tooling of the active calibration platform.
According to an embodiment of the present application, the rotating mechanism includes a rotating frame and a vertical rotating shaft, wherein the rotating frame is installed on the vertical rotating shaft, and the planar light source target and the collimator target are installed on the rotating frame in the same direction, so as to drive the planar light source target and the collimator target to rotate synchronously around the vertical rotating shaft through the rotating frame, such that the positions of the planar light source target and the collimator target are changed to respectively correspond to the module tooling of the active calibration platform.
According to an embodiment of the present application, the planar light source target and the collimator panel are axisymmetrically mounted to the turret about the vertical rotation axis.
According to an embodiment of the present application, the field angle of the small field module is between 0 ° and 130 °, and the field angle of the large field module is between 110 ° and 180 °.
According to an embodiment of the present application, the planar light source panel includes an LED light source array and a light homogenizing plate, wherein the light homogenizing plate is correspondingly disposed on a light emitting side of the LED light source array for homogenizing light beams emitted by the LED light source array.
According to an embodiment of the present application, the collimator target includes a set of collimators and an arc-shaped slide rail, wherein the collimators are slidably mounted to the arc-shaped slide rail for sliding along the arc-shaped slide rail to change the orientation of the collimators.
According to another aspect of the present invention, the present invention further provides an active calibration method, comprising the steps of:
switching a switchable reticle assembly of an active calibration device so that a planar light source reticle and a collimator reticle of the switchable reticle assembly respectively correspond to a module tooling of an active calibration platform of the active calibration device;
responding to the module tool of the active calibration platform corresponding to the plane light source target, and actively calibrating the small field of view module arranged in the module tool through the active calibration device; and
and responding to the module tool of the collimator target corresponding to the active calibration platform, and actively calibrating the large view field module arranged in the module tool through the active calibration device.
According to an embodiment of the present application, in the step of switching the switchable reticle assembly of the active calibration device so that the planar light source reticle and the collimator reticle of the switchable reticle assembly respectively correspond to the module tooling of the active calibration platform of the active calibration device:
the positions of the plane light source target and the parallel light source target are changed through the target switching bracket of the switchable target assembly, so that the plane light source target and the parallel light pipe target are switched mutually to respectively correspond to the module tool of the active calibration platform.
According to an embodiment of the present application, the step of switching the switchable reticle assembly of an active calibration device such that the planar light source reticle and the collimator reticle of the switchable reticle assembly correspond to the module tooling of the active calibration platform of the active calibration device, respectively, comprises the steps of:
synchronously translating or rotating the planar light source panel and the collimator panel so that the positions or orientations of the planar light source panel and the collimator panel are changed to respectively correspond to the module tooling of the active calibration platform.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.
Drawings
Fig. 1 is a perspective view of an active calibration device according to an embodiment of the invention.
Fig. 2 is a schematic diagram illustrating the active calibration apparatus according to the above embodiment of the present invention in a small field calibration state.
Fig. 3 is a schematic diagram of the active calibration device according to the above embodiment of the present invention in a large field of view calibration state.
Fig. 4 is a schematic structural diagram illustrating a planar light source panel of the active calibration apparatus according to the above-described embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the collimator target of the active calibration device according to the above embodiment of the invention.
Fig. 6A and 6B show a first variant implementation of the active calibration device according to the above-described embodiment of the invention.
Fig. 7A and 7B show a second variant implementation of the active calibration device according to the above-described embodiment of the invention.
Fig. 8 shows a schematic flow chart of an active calibration method according to an embodiment of the invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
In the present invention, the terms "a" and "an" in the claims and the description should be understood as meaning "one or more", that is, one element may be one in number in one embodiment, and the element may be more than one in number in another embodiment. The terms "a" and "an" should not be construed as limiting the number unless the number of such elements is explicitly recited as one in the present disclosure, but rather the terms "a" and "an" should not be construed as being limited to only one of the number.
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
At present, the field coverage of the existing intelligent module is wide, the field angle of the existing intelligent module can reach 0 to 180 degrees, and the conventional active calibration equipment can only perform active calibration on a small field module with the field angle of 0 to 130 degrees due to the adoption of a planar light source target, so that the conventional active calibration equipment cannot be compatible with the module active calibration with the field angle of 0 to 180 degrees. Therefore, in order to be compatible with the module active calibration with the angle of view of 0 ° to 180 °, the application provides an active calibration device, a method thereof and an electronic device.
Illustrative apparatus
Referring to fig. 1-5 of the drawings, an active alignment apparatus according to an embodiment of the present invention is illustrated for active alignment compatible with a small field of view module and a large field of view module. Specifically, as shown in fig. 1 to 3, the active calibration device 1 may include an active calibration platform 10 and a switchable target assembly 20. The active calibration platform 10 includes a module fixture 11 for installing a module 800 to be calibrated, wherein the module 800 to be calibrated is a small field module 801 or a large field module 802. The switchable target assembly 20 may include a planar light source target 21 and a collimator target 22, wherein the planar light source target 21 and the collimator target 22 are switchably disposed above the active calibration platform 10, and when the planar light source target 21 is switched to correspond to the module tool 11 of the active calibration platform 10, the active calibration device 1 is in a small field of view calibration state for performing active calibration on the small field of view module 801; when the collimator target 22 is switched to correspond to the module tool 11 of the active calibration platform 10, the active calibration device 1 is in a large-view-field calibration state for actively calibrating the large-view-field module 802.
It is noted that the field angle of the small field module 801 of the present application may be between 0 ° and 130 °, and the field angle of the large field module 802 of the present application may be between 110 ° and 180 °. In this way, the active calibration device 1 of the present application is well compatible with the active calibration of a module with an angle of view of 0 ° to 180 °, thereby contributing to the improvement of the versatility of the active calibration device 1. It is understood that when the planar light source panel 21 or the collimator panel 22 corresponds to the module tooling 11 of the active calibration platform 10, the planar light source panel 21 or the collimator panel 22 will be within the field of view of the module 800 to be calibrated mounted to the module tooling 11, as shown in fig. 2 and 3.
More specifically, according to the above embodiment of the present application, as shown in fig. 1, fig. 2 and fig. 4, the planar light source panel 21 may include an LED light source array 211 and a light homogenizing plate 212, where the light homogenizing plate 212 is correspondingly disposed on the light emitting side of the LED light source array 211, and is used for performing a light homogenizing process on the light beam emitted by the LED light source array 211, so that the module to be calibrated 800 can receive the homogenized light beam, so as to perform active calibration on the small field of view module 801 of the module to be calibrated 800.
Accordingly, as shown in fig. 1, 3 and 5, the collimator target 22 may include at least one set of collimators 221 and an arc-shaped slide rail 222, wherein the collimators 221 are slidably mounted on the arc-shaped slide rail 222 for sliding along the arc-shaped slide rail 222 to change the orientation of the collimators 221, so as to meet the requirements of different angles of view of the module to be calibrated. It can be understood that the collimator target 22 can serve as a dual function of a light source and a target, so that the module to be calibrated 800 can capture the collimator 221 to obtain an image of the collimator 221, and the large-field-of-view module 802 performs an active calibration operation. In addition, the active calibration device 1 of the present application can provide active calibration services for modules with different angles of view only by adjusting the relevant parameters of the collimator 221 in the collimator target 22.
Preferably, as shown in fig. 3 and 5, the arc-shaped slide rail 222 of the collimator panel 22 may include a slide rail base 2221 and a plurality of arc-shaped slide arms 2222, wherein one end of each arc-shaped slide arm 2222 is fixedly arranged on the slide rail base 2221, and the other end of each arc-shaped slide arm 2222 extends outwards and is bent from the slide rail base 2221, wherein each collimator 221 is correspondingly installed on the arc-shaped slide arm 2222 to slide along the arc-shaped slide arm 2222 to change the orientation of the collimator 221.
For example, as shown in fig. 5, the collimator target 22 may include nine collimator tubes 221, and the arc-shaped slide rail 222 of the collimator target 22 may include four arc-shaped slide arms 2222, wherein the four arc-shaped slide arms 2222 are axially symmetrically disposed on the slide rail base 2221 to form a hemispherical adjustment space, one of the collimator tubes 221 is fixedly disposed on the slide rail base 2221 of the arc-shaped slide rail 222, and the remaining eight collimator tubes 221 are slidably mounted on the arc-shaped slide arms 2222 of the arc-shaped slide rail 222, respectively.
In addition, as shown in fig. 5, the arc-shaped slide rail 222 of the collimator tube target 22 may further include a plurality of pulley mechanisms 2223, wherein the pulley mechanisms 2223 are correspondingly disposed between the collimator tube 221 and the arc-shaped slide arms 2222 of the arc-shaped slide rail 222, so as to adjust the position of the collimator tube 221 on the arc-shaped slide arms 2222 of the arc-shaped slide rail 222, and further change the orientation of the collimator tube 221.
More preferably, as shown in fig. 5, the collimator target 22 may further include a point light source 223, wherein the point light source 223 is fixedly mounted on the arc-shaped slide rail 222, and the collimator 221 and the point light source 223 are arranged at intervals and emit light in the same direction, and are used for performing pre-sharp positioning processing on the photosensitive component and the optical lens of the module to be calibrated 800 according to the image blur degree of the point light source 223, so as to shorten the number of steps of going out of focus in the active calibration operation, which is helpful for improving the efficiency of active calibration.
It should be noted that the active calibration device of the present invention can quickly move the light sensing element and the optical lens in the module 800 to be calibrated to the pre-clear position by using the image blur degree of the point light source 223, so as to perform defocus directly from the pre-clear position, and the number of defocus steps required during the positioning correction process is greatly reduced, thereby improving the efficiency of active calibration. It is understood that the degree of image blur of the point light source 223 is directly related to the number of pixels (pixels) occupied by the point light spot in the image of the point light source 223.
It should be noted that, according to the above-mentioned embodiment of the present application, as shown in fig. 1 to 3, the switchable target assembly 20 may further include a target switching bracket 23, wherein the planar light source target 21 and/or the collimator target 22 are respectively mounted to the target switching bracket 23, so as to change the pose of the planar light source target 21 and/or the collimator target 22 through the target switching bracket 23, such that the planar light source target 21 and the collimator target 22 are mutually switched to respectively correspond to the module tooling 11 of the active calibration platform 10, thereby realizing the switching of the active calibration device 1 between the small-field-of-view calibration state and the large-field-of-view calibration state.
In an example of the present application, the reticle switching bracket 23 of the switchable reticle assembly 20 may be, but is not limited to be, implemented as a moving mechanism 230, wherein the planar light source reticle 21 and the collimator reticle 22 are respectively mounted on the moving mechanism 230, so as to move the planar light source reticle 21 and the collimator reticle 22 through the moving mechanism 230, such that the planar light source reticle 21 and the collimator reticle 22 are subjected to position change under the driving of the moving mechanism 230, such that the planar light source reticle 21 and the collimator reticle 22 are switched to correspond to the module tooling 11 of the active calibration platform 10, respectively.
Of course, in another example of the present application, the target switching bracket 23 of the switchable target assembly 20 may be implemented not as the moving mechanism 230 but as a fixed bracket for detachably mounting the planar light source target 21 and the collimator target 22. Thus, when the small field of view module 801 is actively calibrated, the collimator panel 22 is detached, and the planar light source panel 21 is mounted; when the large view field module 802 is actively calibrated, the plane light source panel 21 is detached, and the collimator panel 22 is mounted.
Preferably, as shown in fig. 1, the planar light source panel 21 and the collimator panel 22 are relatively fixedly mounted to the moving mechanism 230 to ensure that the relative posture between the planar light source panel 21 and the collimator panel 22 is fixed.
It is noted that, in order to obtain an active calibration structure with higher precision, before the active calibration of the large view field module 802, it is often necessary to perform alignment correction through OC to align the center of the collimator target 22 with the center of the chip of the large view field module 802 mounted on the module tool 11. However, the existing active calibration equipment is complicated in steps and difficult to perform OC centering correction, and usually the thimble clamp needs to be removed first, and then the first centering jig is installed and locked; then, sleeving a second centering jig on the first centering jig and tightly matching the second centering jig; meanwhile, a third centering jig is arranged on the central light pipe of the collimator light pipe marking plate 22 in a close fit manner; then, the center light pipe of the collimator target 22 is lowered to confirm the position deviation; and finally, the second jig and the third jig can be smoothly spliced by adjusting the hole position of the light pipe so as to finish the centering correction operation.
Since the plane light source target 21 and the collimator target 22 of the present application are relatively and fixedly mounted on the moving mechanism 230, so that the relative pose between the plane light source target 21 and the collimator target 22 is fixed and unchanged, the active calibration device 1 of the present application only needs to complete the centering operation between the plane light source target 21 and the module 800 to be calibrated, and can move the collimator target 22 to the position centering with the module 800 to be calibrated according to the relative pose between the plane light source target 21 and the collimator target 22, so as to omit the centering operation between the collimator target 22 and the module 800 to be calibrated, which is helpful to simplify the active calibration difficulty of the large-field-of-view module 802 and improve the active calibration efficiency and precision. It can be understood that the centering operation between the planar light source target 21 and the module to be calibrated 800 is less difficult and easier to operate than the centering operation between the collimator target 22 and the module to be calibrated 800.
According to the above-described embodiment of the present application, as shown in fig. 2 and 3, the moving mechanism 230 of the reticle switching bracket 23 of the switchable reticle assembly 20 may be, but is not limited to be, implemented as a translation mechanism 231, wherein the planar light source reticle 21 and the collimator tube reticle 22 are mounted side by side to the translation mechanism 231 to synchronously translate the planar light source reticle 21 and the collimator tube reticle 22 by the translation mechanism 231, so that the positions of the planar light source reticle 21 and the collimator tube reticle 22 are changed to correspond to the module tooling 11 of the active calibration platform 10, respectively, without frequently disassembling the planar light source reticle 21 and the collimator tube reticle 22.
For example, as shown in fig. 2 and 3, the translation mechanism 231 may include a pair of gantry 2311 and a pair of linear rails 2312, wherein the linear rails 2312 may also be mounted to the gantry 2311, and the planar light source target 21 and the collimator light pipe target 22 are mounted side by side and slidably to the linear rails 2312, so that the planar light source target 21 and the collimator light pipe target 22 can be translated slidably along the linear rails 2312, and still achieve that the planar light source target 21 and the collimator light pipe target 22 are switched to correspond to the module tooling 11 of the active calibration platform 10, respectively.
Of course, in other examples of the present application, the planar light source target 21 and the collimator target 22 may be respectively mounted on the gantry 2311 in an air-suspension manner, and the gantry 2311 of the translation mechanism 231 is slidably disposed on the linear track 2312 for sliding along the linear track 2312 to move the planar light source target 21 and the collimator target 22 in a translation manner, so that the planar light source target 21 and the collimator target 22 are switched to correspond to the module tooling 11 of the active calibration platform 10, respectively.
Fig. 6A and 6B show a first variant implementation of the active calibration device 1 according to the above-described embodiment of the present application. The active calibration device 1 according to the first variant embodiment of the present application differs from the above-described embodiment of the present application in that: the moving mechanism 230 of the reticle switching bracket 23 of the switchable reticle assembly 20 may be implemented as a rotating mechanism 232, wherein the planar light source reticle 21 and the collimator reticle 22 are fixedly mounted to the rotating mechanism 232 to synchronously rotate the planar light source reticle 21 and the collimator reticle 22 by the rotating mechanism 232, so that the planar light source reticle 21 and the collimator reticle 22 are switched to each other to correspond to the module tooling 11 of the active calibration platform 10, respectively, without frequently disassembling and assembling the planar light source reticle 21 and the collimator reticle 22.
More specifically, as shown in fig. 6A and 6B, in the first modified embodiment of the present application, the rotating mechanism 232 of the moving mechanism 230 may include a base frame 2321 and a horizontal rotating shaft 2322, wherein the horizontal rotating shaft 2322 is rotatably mounted on the base frame 2321, and the planar light source scale plate 21 and the collimator light pipe scale plate 22 are mounted on the horizontal rotating shaft 2322 in a staggered manner, so as to drive the planar light source scale plate 21 and the collimator light pipe scale plate 22 to rotate synchronously through the horizontal rotating shaft 2322, so that the orientations of the planar light source scale plate 21 and the collimator light pipe scale plate 22 are changed, and the planar light source scale plate 21 and the collimator light pipe scale plate 22 are switched to correspond to the module tooling 11 of the active calibration platform 10, respectively.
Preferably, as shown in fig. 6A and 6B, the planar light source mask 21 and the collimator mask 22 are symmetrically mounted to the horizontal rotation shaft 2322. In this way, when the planar light source target 21 corresponds to the module tooling 11 of the active calibration platform 10 to perform active calibration on the small-field-of-view module 801, the horizontal rotation shaft 2322 rotates 180 °, which just enables the collimator panel 22 to be switched to correspond to the module tooling 11 of the active calibration platform 10 to perform active calibration on the large-field-of-view module 802, so as to ensure accurate switching between the planar light source target 21 and the collimator panel 22, and simultaneously avoid the structural interference between the planar light source target 21 and the collimator panel 22. In particular, when the planar light source panel 21 or the collimator panel 22 corresponds to the module tooling 11 of the active calibration platform 10, the collimator panel 22 or the planar light source panel 21 just faces away from the module tooling 11 to prevent the planar light source panel 21 and the collimator panel 22 from interfering with each other during active calibration, which helps to ensure the active calibration accuracy of the active calibration device 1.
Fig. 7A and 7B show a second variant of the active calibration device 1 according to the above-described embodiment of the present application. Compared to the above-described first variant embodiment according to the present application, the active calibration device 1 according to the second variant embodiment of the present application differs in that: the rotating mechanism 232 'of the moving mechanism 230 may include a rotating frame 2321' and a vertical rotating shaft 2322 ', wherein the rotating frame 2321' is installed at the vertical rotating shaft 2322 ', and the planar light source scale plate 21 and the collimator light pipe scale plate 22 are installed at the rotating frame 2321' in the same direction, so that the planar light source scale plate 21 and the collimator light pipe scale plate 22 are driven by the rotating frame 2321 'to rotate synchronously around the vertical rotating shaft 2322', so that the positions of the planar light source scale plate 21 and the collimator light pipe scale plate 22 are changed, and the planar light source scale plate 21 and the collimator light pipe scale plate 22 are switched to correspond to the module tooling 11 of the active calibration platform 10, respectively.
Preferably, as shown in fig. 7A and 7B, the planar light source mask 21 and the collimator mask 22 are axisymmetrically mounted to the rotating frame 2321 'with the vertical rotating shaft 2322' as an axis. Thus, when the plane light source target 21 corresponds to the module tooling 11 of the active calibration platform 10 to perform active calibration on the small-field-of-view module 801, the rotating frame 2321 'rotates 180 ° around the vertical rotating shaft 2322', which just enables the collimator target 22 to be switched to correspond to the module tooling 11 of the active calibration platform 10 to perform active calibration on the large-field-of-view module 802.
Illustrative method
Referring to FIG. 8 of the drawings, an active calibration method according to an embodiment of the present invention is illustrated. Specifically, as shown in fig. 8, the active calibration method may include the steps of:
s100: switching a switchable target assembly 20 of an active calibration device 1 so that a planar light source target 21 and a parallel light pipe target 22 of the switchable target assembly 20 respectively correspond to the module tooling 11 of the active calibration platform 10 of the active calibration device 1;
s200: in response to the planar light source panel 21 corresponding to the module tooling 11 of the active calibration platform 10, actively calibrating the small-field module 801 mounted on the module tooling 11 by the active calibration device 1; and
s300: in response to the collimator target 22 corresponding to the module tooling 11 of the active calibration platform 10, the large-field module 802 mounted on the module tooling 11 is actively calibrated by the active calibration device 1.
It is to be noted that, according to the above-mentioned embodiment of the present application, in the step S100 of the active calibration method: the positions of the plane light source target 21 and the collimator light source target 22 are changed by the target switching bracket 23 of the switchable target assembly 20, so that the plane light source target 21 and the collimator light source target 22 are switched to correspond to the module tool 11 of the active calibration platform 10, respectively.
In an example of the present application, the step S100 of the active calibration method may include the steps of:
synchronously translating or rotating the planar light source target 21 and the collimator target 22 so that the positions or orientations of the planar light source target 21 and the collimator target 22 can be changed to correspond to the module tooling 11 of the active calibration platform 10, respectively.
It should also be noted that in the devices, apparatuses and methods of the present invention, the components or steps may be decomposed and/or re-combined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (15)
1. The active calibration device is used for actively calibrating the module to be calibrated, wherein the module to be calibrated is a small view field module or a large view field module, and the active calibration device is characterized by comprising:
the active calibration platform comprises a module tool used for installing the module to be calibrated; and
a switchable reticle assembly, wherein the switchable reticle assembly comprises a planar light source reticle and a collimator reticle, and the planar light source reticle and the collimator reticle are switchably disposed above the active calibration platform, wherein when the planar light source reticle is switched to correspond to the module tooling of the active calibration platform, the active calibration device is in a small field of view calibration state for actively calibrating the small field of view module, and when the collimator reticle is switched to correspond to the module tooling of the active calibration platform, the active calibration device is in a large field of view calibration state for actively calibrating the large field of view module.
2. The active calibration device of claim 1, wherein the switchable reticle assembly further comprises a reticle switching bracket, wherein the planar light source reticle and/or the collimator reticle are mounted to the reticle switching bracket to change the pose of the planar light source reticle and the collimator reticle by the reticle switching bracket such that the planar light source reticle and the collimator reticle are switched to each other to correspond to the modular tooling of the active calibration platform, respectively.
3. The active calibration device of claim 2, wherein the reticle switching bracket is a moving mechanism, and wherein the planar light source reticle and the collimator reticle are respectively and fixedly mounted on the moving mechanism to move the planar light source reticle and the collimator reticle by the moving mechanism, so that the planar light source reticle and the collimator reticle respectively correspond to the module tooling of the active calibration platform under the driving of the moving mechanism.
4. The active calibration device of claim 3, wherein the moving mechanism is a translation mechanism, wherein the planar light source panel and the collimator panel are mounted side-by-side to the translation mechanism for synchronously translating the planar light source panel and the collimator panel by the translation mechanism such that the positions of the planar light source panel and the collimator panel are changed to correspond to the module tooling of the active calibration platform, respectively.
5. The active alignment device of claim 4, wherein the translation mechanism comprises a gantry and a pair of linear rails, wherein the planar light source target and the collimator target are respectively mounted in suspension on the gantry, and the gantry is slidably disposed on the linear rails for sliding along the linear rails to translate the planar light source target and the collimator target.
6. The active calibration device of claim 3, wherein the moving mechanism is a rotating mechanism, wherein the planar light source panel and the collimator panel are fixedly mounted to the rotating mechanism to synchronously rotate the planar light source panel and the collimator panel by the rotating mechanism, such that the poses of the planar light source panel and the collimator panel are changed to respectively correspond to the module tooling of the active calibration platform.
7. The active calibration device of claim 6, wherein the rotation mechanism comprises a base frame and a horizontal rotation shaft, wherein the horizontal rotation shaft is rotatably mounted to the base frame, and the planar light source target and the collimator target are mounted to the horizontal rotation shaft in a staggered manner, so that the planar light source target and the collimator target are driven to rotate synchronously by the horizontal rotation shaft, such that the orientations of the planar light source target and the collimator target are changed to correspond to the module tooling of the active calibration platform, respectively.
8. The active calibration device of claim 6, wherein the rotation mechanism comprises a rotating frame and a vertical shaft, wherein the rotating frame is mounted to the vertical shaft, and the planar light source target and the collimator target are mounted to the rotating frame in the same direction, so that the planar light source target and the collimator target are driven by the rotating frame to rotate synchronously around the vertical shaft, so that the positions of the planar light source target and the collimator target are changed to correspond to the module tooling of the active calibration platform, respectively.
9. The active calibration device of claim 8, wherein the planar light source panel and the collimator panel are axisymmetrically mounted to the turret about the vertical rotation axis.
10. The active calibration device of any one of claims 1 to 9, wherein the small field of view module has a field angle between 0 ° and 130 ° and the large field of view module has a field angle between 110 ° and 180 °.
11. The active calibration device of any one of claims 1 to 9, wherein the planar light source panel comprises an array of LED light sources and a light homogenizing plate, wherein the light homogenizing plate is correspondingly disposed on a light emitting side of the array of LED light sources for homogenizing light beams emitted from the array of LED light sources.
12. The active collimation device as recited in any of claims 1 to 9, wherein the collimator target comprises a set of collimators and an arcuate slide track, wherein the collimators are slidably mounted to the arcuate slide track for sliding along the arcuate slide track to change an orientation of the collimators.
13. An active calibration method, comprising the steps of:
switching a switchable target assembly of an active calibration device so that a plane light source target and a collimator target of the switchable target assembly respectively correspond to the module tooling of the active calibration platform of the active calibration device;
responding to the module tool of the active calibration platform corresponding to the plane light source target, and actively calibrating the small field of view module arranged in the module tool through the active calibration device; and
and responding to the module tool of the collimator target corresponding to the active calibration platform, and actively calibrating the large view field module installed in the module tool through the active calibration device.
14. The active calibration method of claim 13, wherein in the step of switching the switchable reticle assembly of an active calibration device such that the planar light source reticle and the collimator reticle of the switchable reticle assembly respectively correspond to the module tooling of the active calibration platform of the active calibration device:
the positions of the plane light source target and the parallel light source target are changed through the target switching bracket of the switchable target assembly, so that the plane light source target and the parallel light pipe target are switched mutually to respectively correspond to the module tool of the active calibration platform.
15. The active calibration method of claim 13 or 14, wherein the step of switching the switchable reticle assembly of an active calibration device such that the planar light source reticle and the collimator reticle of the switchable reticle assembly respectively correspond to the module tooling of the active calibration platform of the active calibration device comprises the steps of:
synchronously translating or rotating the planar light source panel and the collimator panel so that the positions or orientations of the planar light source panel and the collimator panel are changed to respectively correspond to the module tooling of the active calibration platform.
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