CN114594611B - Active calibration device and method thereof - Google Patents
Active calibration device and method thereof Download PDFInfo
- Publication number
- CN114594611B CN114594611B CN202011412344.5A CN202011412344A CN114594611B CN 114594611 B CN114594611 B CN 114594611B CN 202011412344 A CN202011412344 A CN 202011412344A CN 114594611 B CN114594611 B CN 114594611B
- Authority
- CN
- China
- Prior art keywords
- target
- active calibration
- collimator
- light source
- planar light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims description 53
- 238000013519 translation Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 2
- 239000000725 suspension Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/32—Fiducial marks and measuring scales within the optical system
- G02B27/34—Fiducial marks and measuring scales within the optical system illuminated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
An active calibration device and a 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 calibration device comprises an active calibration platform and a switchable target assembly. The active calibration platform comprises a module tool for installing the module to be calibrated. The switchable target assembly comprises a planar light source target and a collimator target, and the planar light source target and the collimator target are switchably arranged above the active calibration platform, wherein when the planar light source target is switched to correspond to the module fixture of the active calibration platform, the active calibration device is in a small-view-field calibration state for actively calibrating the small-view-field module, and when the collimator target is switched to correspond to the module fixture of the active calibration platform, the active calibration device is in a large-view-field calibration state for actively calibrating the large-view-field module.
Description
Technical Field
The invention relates to the technical field of module calibration, in particular to an active calibration device and a method thereof.
Background
With the rapid development of science and technology, imaging requirements of electronic products with imaging functions are also increasing. Especially, smart phones and the like which are developed in the prior art are required to be small in size and high in imaging quality, and strict requirements are clearly met for processing and assembling the products. When these microminiature products are processed and assembled, certain errors affect the image quality, and this requires Active calibration (AA) operation to adjust the relative positional relationship between the optical lens and the image sensor, so as to achieve the best imaging effect.
However, the conventional active calibration device generally adopts 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 the 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 results in difficulty in size standardization of the conventional active calibration device, and incapability of unifying the device sizes, which results in large floor space of the conventional active calibration device, and difficulty in performing active calibration on the large-wide-angle module in a small place.
Particularly, since the field of view of the existing module is very wide, the range of the field of view can be 0 ° to 180 °, and the conventional active calibration device cannot be compatible with the active calibration with the field of view ranging from 0 ° to 180 ° due to the planar light source, how to make the active calibration device compatible with the module calibration with the field of view ranging from 0 ° to 180 ° has become a problem to be solved.
Disclosure of Invention
An advantage of the present invention is to provide an active calibration device and a method thereof, which can be compatible with active calibration of a module with a field angle ranging from 0 ° to 180 °, and is helpful for improving the versatility of the active calibration device.
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 is compatible with a planar light source and a parallel light pipe, so that both a small-field-of-view module and a large-field-of-view module can be actively calibrated, which is helpful for expanding the versatility of the active calibration device.
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 be conveniently switched between a small-field calibration state and a large-field calibration state, so as to improve the versatility of the active calibration device and improve the operability and the active calibration efficiency of the active calibration device.
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 the alignment difficulty of the collimator by means of a planar light source and improve the alignment accuracy of the collimator of the active calibration device, so as to help to improve the active calibration accuracy of the active calibration device.
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 greatly shorten the time required for active calibration of a large-field module by means of a planar light source, greatly improve the efficiency of active calibration, and help to meet the market demands of high efficiency and low cost.
Another advantage of the present invention is to provide an active calibration device and method thereof, wherein in order to achieve the above advantages, the present invention does not need to use a complex structure and huge calculation, and requires low software and hardware requirements. The present invention thus successfully and efficiently provides a solution that not only provides an active calibration device and method and electronic equipment, but also increases the practicality and reliability of the active calibration device and method and electronic equipment.
To achieve at least one of the above or other advantages and objects, the present invention provides an active calibration device for actively calibrating a module to be calibrated, wherein the module to be calibrated is a small field of view module or a large field of view module, wherein the active calibration device comprises:
the active calibration platform comprises a module tool which is used for installing the module to be calibrated; and
the switchable target assembly comprises a planar light source target and a collimator target, and the planar light source target and the collimator target are switchably arranged above the active calibration platform, wherein when the planar light source target is switched to correspond to the module fixture of the active calibration platform, the active calibration device is in a small-view calibration state and is used for actively calibrating the small-view module, and when the collimator target is switched to correspond to the module fixture of the active calibration platform, the active calibration device is in a large-view calibration state and is used for actively calibrating the large-view module.
According to an embodiment of the application, the switchable target assembly further comprises a target switching bracket, wherein the planar light source target and/or the collimator target is mounted to the target switching bracket to change the pose of the planar light source target and the collimator target by the target switching bracket such that the planar light source target and the collimator target are switched to each other to correspond to the modular tooling of the active calibration platform, respectively.
According to an embodiment of the present application, the target switching support is a moving mechanism, where the planar light source target and the collimator target are relatively fixedly installed on the moving mechanism, so that the planar light source target and the collimator target are moved by the moving mechanism, so that the planar light source target and the collimator target are driven by the moving mechanism to respectively correspond to the module tools 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 target and the collimator target are mounted side by side to the translation mechanism, so that the planar light source target and the collimator target are translated synchronously by the translation mechanism, so that positions of the planar light source target and the collimator target are changed to correspond to the module tools of the active calibration platform, respectively.
According to an embodiment of the present application, the translation mechanism includes a portal frame and a pair of linear rails, wherein the planar light source target and the collimator target are respectively mounted in the portal frame in a suspended manner, and the portal frame is slidably disposed in the linear rails, and is configured to slide along the linear rails to drive the planar light source target and the collimator target to translate.
According to an embodiment of the present application, the moving mechanism is a rotating mechanism, wherein the planar light source target and the collimator target are fixedly mounted to the rotating mechanism, so that the planar light source target and the collimator target are synchronously rotated by the rotating mechanism, so that the pose of the planar light source target and the collimator target is changed to correspond to the module tools of the active calibration platform, respectively.
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 mounted on the base frame, and the plane light source target and the collimator target are mounted on the horizontal rotating shaft in a staggered manner, so that the plane light source target and the collimator target are driven to synchronously rotate by the horizontal rotating shaft, so that the orientations of the plane light source target and the collimator target are changed to respectively correspond to the module tools of the active calibration platform.
According to an embodiment of the application, the rotating mechanism comprises a rotating frame and a vertical rotating shaft, wherein the rotating frame is installed on the vertical rotating shaft, and the plane light source target and the collimator target are installed on the rotating frame in the same direction, so that the plane light source target and the collimator target are driven to synchronously rotate around the vertical rotating shaft through the rotating frame, and the positions of the plane light source target and the collimator target are changed to respectively correspond to the module fixture of the active calibration platform.
According to an embodiment of the present application, the planar light source target and the collimator target are axisymmetrically mounted to the rotating frame with the vertical rotation shaft as an 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 application, the planar light source target comprises an LED light source array and a light homogenizing plate, wherein the light homogenizing plate is correspondingly arranged on the light emitting side of the LED light source array and is used 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 collimator tubes and an arcuate slide rail, wherein the collimator tubes are slidably mounted to the arcuate slide rail for sliding along the arcuate slide rail to change an orientation of the collimator tubes.
According to another aspect of the present invention, the present invention further provides an active calibration method, comprising the steps of:
switching a switchable target assembly of an active calibration device so that a planar light source target and a collimator target of the switchable target assembly respectively correspond to a module fixture of an active calibration platform of the active calibration device;
responding to the module fixture of the active calibration platform corresponding to the planar light source target, and actively calibrating a small-view-field module installed on the module fixture through the active calibration device; and
and responding to the module tool of the collimator standard corresponding to the active calibration platform, and actively calibrating the large-view-field module installed on the module tool through the active calibration device.
According to an embodiment of the present application, in the step of switching the switchable target assembly of an active calibration device so that the planar light source target and the collimator target of the switchable target assembly respectively correspond to the module tools of the active calibration platform of the active calibration device, the method further comprises:
the positions of the plane light source target and the parallel light source target are changed through the target switching support of the switchable target assembly, so that the plane light source target and the parallel light pipe target are mutually switched 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 target assembly of an active calibration device so that the planar light source target and the collimator target of the switchable target assembly respectively correspond to the module tools of the active calibration platform of the active calibration device includes the steps of:
the planar light source target and the collimator target are translated or rotated synchronously, so that the positions or orientations of the planar light source target and the collimator target are changed to correspond to the module tools of the active calibration platform respectively.
Further objects and advantages of the present invention will become fully apparent from the following description and the accompanying 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 appended claims.
Drawings
Fig. 1 is a schematic perspective view of an active calibration device according to an embodiment of the invention.
Fig. 2 shows a schematic view of the active calibration device according to the above embodiment of the present invention in a small field of view calibration state.
Fig. 3 shows a schematic view of the active calibration device according to the above embodiment of the present invention in a large field of view calibration state.
Fig. 4 shows a schematic structural diagram of a planar light source target of the active calibration device according to the above embodiment of the present invention.
Fig. 5 shows a schematic structural view of a collimator for the active calibration device according to the above embodiment of the present invention.
Fig. 6A and 6B show a first variant of the active calibration device according to the above-described embodiment of the invention.
Fig. 7A and 7B show a second variant of the active calibration device according to the above-described embodiment of the invention.
Fig. 8 shows a flow diagram of an active calibration method according to an embodiment of the invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention 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 specification should be understood as "one or more", i.e. in one embodiment the number of one element may be one, while in another embodiment the number of the element may be plural. The terms "a" and "an" are not to be construed as unique or singular, and the term "the" and "the" are not to be construed as limiting the amount of the element unless the amount of the element is specifically indicated as being only one in the disclosure of the present invention.
In the description of the present invention, it should 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, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through a medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present invention. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
At present, the visual field coverage range of the existing intelligent module is wider, the visual field angle can reach 0-180 degrees generally, and the conventional active calibration equipment can only actively calibrate the small visual field module with the visual field angle of 0-130 degrees due to the adoption of the planar light source target, so that the conventional active calibration equipment cannot be compatible with the active calibration of the module with the visual field angle of 0-180 degrees. Therefore, in order to be compatible with active calibration of modules with the view angle of 0-180 degrees, the application provides an active calibration device, a method thereof and electronic equipment.
Schematic device
Referring to fig. 1 to 5 of the drawings, an active calibration device according to an embodiment of the present invention is illustrated for active calibration of compatible small field-of-view modules and large field-of-view modules. In particular, as shown in fig. 1-3, 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 mounting 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 fixture 11 of the active calibration platform 10, the active calibration device 1 is in a small-field calibration state for actively calibrating the small-field module 801; when the collimator 22 is switched to correspond to the module fixture 11 of the active calibration platform 10, the active calibration device 1 is in a large field of view calibration state for actively calibrating the large field of view 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 can be well compatible with active calibration of modules with a view angle of 0 ° to 180 °, thereby helping to promote versatility of the active calibration device 1. It will be appreciated that, as shown in fig. 2 and 3, when the planar light source target 21 or the collimator target 22 corresponds to the module fixture 11 of the active calibration platform 10, the planar light source target 21 or the collimator target 22 will be within the field of view of the module 800 to be calibrated mounted to the module fixture 11.
More specifically, according to the above embodiments of the present application, as shown in fig. 1, 2 and 4, the planar light source target 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 a light emitting side of the LED light source array 211 and is configured to perform a light homogenizing process on a 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 actively calibrate the small-field module 801 of the module to be calibrated 800.
Accordingly, as shown in fig. 1, 3 and 5, the collimator 22 may include at least one group of collimator 221 and an arc-shaped rail 222, wherein the collimator 221 is slidably mounted on the arc-shaped rail 222, and is configured to slide along the arc-shaped rail 222 to change the orientation of the collimator 221, so as to adapt to the requirements of different angles of view of the module to be calibrated. It will be appreciated that the collimator target 22 can serve as a dual function of light source and target such that the module to be calibrated 800 can take images of the collimator 221 to obtain images of the collimator 221 such that the large field of view module 802 performs active calibration operations. 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 parameters related to the collimator 221 in the collimator target 22.
Preferably, as shown in fig. 3 and 5, the arc-shaped sliding rail 222 of the collimator target 22 may include a sliding rail base 2221 and a plurality of arc-shaped sliding arms 2222, wherein one end of each arc-shaped sliding arm 2222 is fixedly arranged on the sliding rail base 2221, and the other end of each arc-shaped sliding arm 2222 extends from the sliding rail base 2221 in a curved manner, wherein each collimator 221 is correspondingly mounted on the arc-shaped sliding arm 2222 to slide along the arc-shaped sliding arm 2222 to change the orientation of the collimator 221.
Illustratively, as shown in fig. 5, the collimator target 22 may include nine collimator 221, and the arc slide rail 222 of the collimator target 22 may include four arc slide arms 2222, wherein the four arc slide arms 2222 are axisymmetrically disposed at the slide rail base 2221 to form a hemispherical adjustment space, wherein one collimator 221 is fixed to the slide rail base 2221 of the arc slide rail 222, and the remaining eight collimator 221 are slidably mounted to the arc slide arms 2222 of the arc slide rail 222, respectively.
In addition, as shown in fig. 5, the arc slide rail 222 of the collimator target 22 may further include a plurality of pulley mechanisms 2223, wherein the pulley mechanisms 2223 are disposed between the collimator 221 and the arc slide arm 2222 of the arc slide rail 222, respectively, for adjusting the position of the collimator 221 on the arc slide arm 2222 of the arc slide rail 222, thereby changing the orientation of the collimator 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 in a same direction to emit light, so as to perform a pre-clear positioning process on the photosensitive assembly and the optical lens of the module to be calibrated 800 according to the image blur degree of the point light source 223, thereby shortening the number of out-of-focus steps in the active calibration operation and helping to improve the efficiency of the active calibration.
It should be noted that, the active calibration device of the present invention can quickly move the photosensitive assembly and the optical lens in the module to be calibrated 800 to the pre-clear position by using the image blur degree of the point light source 223, so that the defocus can be directly performed from the pre-clear position, so that the defocus number required in the positioning correction process is greatly reduced, and the active calibration efficiency is improved. It will be appreciated that the degree of image blur of the point light source 223 is directly related to the number of pixels (pixels) occupied by the spot light in the image of the point light source 223.
It should be noted that, according to the above 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 by the target switching bracket 23, so that the planar light source target 21 and the collimator target 22 are mutually switched to respectively correspond to the module fixture 11 of the active calibration platform 10, thereby achieving the switching of the active calibration device 1 between the small-field calibration state and the large-field calibration state.
In an example of the present application, the target switching stand 23 of the switchable target assembly 20 may be, but is not limited to, implemented as a moving mechanism 230, wherein the planar light source target 21 and the collimator target 22 are respectively mounted on the moving mechanism 230, so that the planar light source target 21 and the collimator target 22 are moved by the moving mechanism 230, so that the planar light source target 21 and the collimator target 22 are changed in position under the driving of the moving mechanism 230, and thus the planar light source target 21 and the collimator target 22 are mutually switched to respectively correspond to the modular fixture 11 of the active calibration platform 10.
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 view field module 801 is actively calibrated, the collimator target 22 is detached and the planar light source target 21 is mounted; when the large field module 802 is actively calibrated, the planar light source target 21 is detached and the collimator target 22 is mounted.
Preferably, as shown in fig. 1, the planar light source target 21 and the collimator target 22 are relatively fixedly mounted to the moving mechanism 230 to ensure that the relative pose between the planar light source target 21 and the collimator target 22 is constant.
It should be noted that, in order to obtain an active calibration structure with higher accuracy, before the large field of view module 802 is actively calibrated, it is often necessary to calibrate the center of the collimator target 22 by OC to align the center of the chip of the large field of view module 802 mounted on the module tool 11. However, the existing active calibration equipment has complicated steps and high difficulty in OC centering correction, and usually needs to disassemble the thimble clamp first and then install and lock the first centering jig; 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 standard plate 22 in a tight fit mode; then, lowering the collimator of the collimator target 22 to confirm the positional deviation; finally, the second jig can be smoothly inserted with the third jig by adjusting the hole site of the light pipe so as to complete the centering correction operation.
The planar light source target 21 and the collimator target 22 are relatively fixedly mounted on the moving mechanism 230, so that the relative pose between the planar light source target 21 and the collimator target 22 is fixed, and therefore, the active calibration device 1 of the application only needs to complete the centering work between the planar light source target 21 and the module to be calibrated 800, and the collimator target 22 can be moved to the position centered with the module to be calibrated 800 according to the relative pose between the planar light source target 21 and the collimator target 22, so that the centering work between the collimator target 22 and the module to be calibrated 800 is omitted, the active calibration difficulty of the large-field module 802 is facilitated, and the active calibration efficiency and accuracy are improved. It will be appreciated 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 target switching bracket 23 of the switchable target assembly 20 may be implemented as, but is not limited to, a translating mechanism 231 in which the planar light source targets 21 and the collimator targets 22 are mounted side by side to the translating mechanism 231 to translate the planar light source targets 21 and the collimator targets 22 synchronously by the translating mechanism 231 such that positions of the planar light source targets 21 and the collimator targets 22 are changed to correspond to the module tools 11 of the active calibration platform 10, respectively, without frequently disassembling the planar light source targets 21 and the collimator targets 22.
Illustratively, as shown in fig. 2 and 3, the translation mechanism 231 may include a pair of gantry frames 2311 and a pair of linear rails 2312, wherein the linear rails 2312 may also be mounted to the gantry frames 2311, and the planar light source target 21 and the collimator target 22 are mounted side by side and slidably to the linear rails 2312, such that the planar light source target 21 and the collimator target 22 can slidably translate along the linear rails 2312, yet enable the planar light source target 21 and the collimator target 22 to be switched with respect to each other to correspond to the modules 11 of the active alignment fixture 10, respectively.
Of course, in other examples of the present application, the plane light source target 21 and the collimator target 22 may be respectively mounted in the gantry 2311 in a suspended manner, and the gantry 2311 in the translation mechanism 231 is slidably disposed in the linear rail 2312, and is configured to slide along the linear rail 2312 to drive the plane light source target 21 and the collimator target 22 to translate, so that the plane light source target 21 and the collimator target 22 are mutually switched to respectively correspond to the module tools 11 of the active calibration platform 10.
Fig. 6A and 6B show a first variant 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 according to the present application in that: the moving mechanism 230 of the target switching bracket 23 of the switchable target assembly 20 may be implemented as a rotating mechanism 232 in which the plane light source targets 21 and the collimator targets 22 are fixedly installed to the rotating mechanism 232 to synchronously rotate the plane light source targets 21 and the collimator targets 22 by the rotating mechanism 232 such that the plane light source targets 21 and the collimator targets 22 are switched to each other to correspond to the module fixtures 11 of the active calibration platform 10, respectively, without frequently disassembling the plane light source targets 21 and the collimator targets 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 to the base frame 2321, and the planar light source target 21 and the collimator target 22 are misdirected to be mounted to the horizontal rotating shaft 2322, so that the planar light source target 21 and the collimator target 22 are synchronously rotated by the horizontal rotating shaft 2322, so that the orientations of the planar light source target 21 and the collimator target 22 are changed, thereby switching the planar light source target 21 and the collimator target 22 to correspond to the module tools 11 of the active calibration platform 10, respectively.
Preferably, as shown in fig. 6A and 6B, the planar light source target 21 and the collimator target 22 are symmetrically mounted to the horizontal rotation shaft 2322. Thus, when the planar light source target 21 corresponds to the module fixture 11 of the active calibration platform 10 to actively calibrate the small field of view module 801, the horizontal rotating shaft 2322 rotates 180 °, so that the collimator target 22 can be just switched to correspond to the module fixture 11 of the active calibration platform 10 to actively calibrate the large field of view module 802, so that structural interference between the planar light source target 21 and the collimator target 22 can be avoided while precise switching between the planar light source target 21 and the collimator target 22 is ensured. In particular, when the planar light source target 21 or the collimator target 22 corresponds to the module fixture 11 of the active calibration platform 10, the collimator target 22 or the planar light source target 21 faces away from the module fixture 11 exactly, so as to prevent mutual interference between the planar light source target 21 and the collimator target 22 during active calibration, which is helpful for ensuring 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. The active calibration device 1 according to the second variant embodiment of the present application differs from the above-described first variant embodiment according to the present application 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 mounted on the vertical rotating shaft 2322', and the plane light source target 21 and the collimator target 22 are mounted on the rotating frame 2321' in a same direction, so that the plane light source target 21 and the collimator target 22 are driven to synchronously rotate around the vertical rotating shaft 2322 'by the rotating frame 2321', so that positions of the plane light source target 21 and the collimator target 22 are changed, and the plane light source target 21 and the collimator target 22 are switched to respectively correspond to the module fixture 11 of the active calibration platform 10.
Preferably, as shown in fig. 7A and 7B, the planar light source target 21 and the collimator target 22 are axisymmetrically mounted to the rotating frame 2321 'with the vertical rotation shaft 2322' as an axis. Thus, when the planar light source target 21 corresponds to the module fixture 11 of the active calibration platform 10 to actively calibrate the small field of view module 801, the rotating frame 2321 'rotates 180 ° around the vertical rotating shaft 2322', so that the collimator target 22 can be just switched to correspond to the module fixture 11 of the active calibration platform 10 to actively calibrate the large field of view module 802.
Schematic 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 fixture 11 of the active calibration platform 10 of the active calibration device 1;
s200: in response to the planar light source target 21 corresponding to the module fixture 11 of the active calibration platform 10, actively calibrating the small field module 801 mounted on the module fixture 11 by the active calibration device 1; and
s300: in response to the collimator 22 corresponding to the module fixture 11 of the active calibration platform 10, the large field module 802 mounted to the module fixture 11 is actively calibrated by the active calibration device 1.
It is noted that, according to the above embodiment of the present application, in the step S100 of the active calibration method: the positions of the planar light source targets 21 and the parallel light source targets 22 are changed by the target switching supports 23 of the switchable target assembly 20 so that the planar light source targets 21 and the parallel light pipe targets 22 are switched to correspond to the module tools 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:
the planar light source target 21 and the collimator target 22 are translated or rotated synchronously so that the positions or orientations of the planar light source target 21 and the collimator target 22 are changed to correspond to the module tools 11 of the active calibration stage 10, respectively.
It is also noted that in the apparatus, devices and methods of the present invention, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects 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 by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Claims (15)
1. The active calibration device is 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, and is characterized in that the active calibration device comprises:
the active calibration platform comprises a module tool which is used for installing the module to be calibrated; and
the switchable target assembly comprises a planar light source target and a collimator target, and the planar light source target and the collimator target are switchably arranged above the active calibration platform, wherein when the planar light source target is switched to correspond to the module fixture of the active calibration platform, the active calibration device is in a small-view calibration state and is used for actively calibrating the small-view module, and when the collimator target is switched to correspond to the module fixture of the active calibration platform, the active calibration device is in a large-view calibration state and is used for actively calibrating the large-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/or the collimator reticle by the reticle switching bracket such that the planar light source reticle and the collimator reticle are switched with respect to each other to correspond to the modular tooling of the active calibration stage, respectively.
3. The active calibration device of claim 2, wherein the reticle switching bracket is a moving mechanism, wherein the planar light source reticle and the collimator reticle are relatively fixedly mounted on the moving mechanism, respectively, so that the planar light source reticle and the collimator reticle are moved by the moving mechanism, so that the planar light source reticle and the collimator reticle respectively correspond to the module fixture of the active calibration platform under the driving of the moving mechanism.
4. The active calibration device of claim 3, wherein the movement mechanism is a translation mechanism, wherein the planar light source target and the collimator target are mounted side-by-side to the translation mechanism to translate the planar light source target and the collimator target synchronously by the translation mechanism such that the positions of the planar light source target and the collimator target are changed to correspond to the modular tooling of the active calibration platform, respectively.
5. The active calibration 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 to 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 target and the collimator target are fixedly mounted to the rotating mechanism to synchronously rotate the planar light source target and the collimator target by the rotating mechanism such that the pose of the planar light source target and the collimator target is changed to correspond to the modular tooling of the active calibration platform, respectively.
7. The active calibration device of claim 6, wherein the rotation mechanism comprises a pedestal and a horizontal shaft, wherein the horizontal shaft is rotatably mounted to the pedestal, and the planar light source target and the collimator target are misdirected to be mounted to the horizontal shaft to synchronously rotate the planar light source target and the collimator target via the horizontal shaft such that the orientation of the planar light source target and the collimator target is changed to correspond to the modular tooling of the active calibration platform, respectively.
8. The active calibration device of claim 6, wherein the rotation mechanism comprises a turret and a vertical shaft, wherein the turret is mounted to the vertical shaft, and the planar light source target and the collimator target are mounted to the turret in a same direction to synchronously rotate the planar light source target and the collimator target about the vertical shaft via the turret such that positions of the planar light source target and the collimator target are changed to correspond to the modular tooling of the active calibration platform, respectively.
9. The active calibration device of claim 8, wherein the planar light source target and the collimator target are axisymmetrically mounted to the turret about the vertical axis of rotation.
10. The active calibration device of any one of claims 1 to 9, wherein 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 °.
11. The active calibration device of any one of claims 1 to 9, wherein the planar light source target 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 via the array of LED light sources.
12. The active calibration device of any one of claims 1 to 9, wherein the collimator target comprises a set of collimator tubes and an arcuate slide rail, wherein the collimator tubes are slidably mounted to the arcuate slide rail for sliding along the arcuate slide rail to change the orientation of the collimator tubes.
13. An active calibration method, comprising the steps of:
switching a switchable target assembly of an active calibration device to enable a planar light source target and a collimator target of the switchable target assembly to respectively correspond to a module fixture of an active calibration platform of the active calibration device, wherein the active calibration device is the active calibration device according to any one of claims 1 to 12;
responding to the module fixture of the active calibration platform corresponding to the planar light source target, and actively calibrating a small-view-field module installed on the module fixture through the active calibration device; and
and responding to the module tool of the collimator standard corresponding to the active calibration platform, and actively calibrating the large-view-field module installed on 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 modular tooling of the active calibration platform of the active calibration device:
the pose of the plane light source target and/or the collimator target is changed through the target switching support of the switchable target assembly, so that the plane light source target and the collimator target are mutually switched to respectively correspond to the module tool of the active calibration platform.
15. The active calibration method according to claim 13 or 14, wherein the step of switching the switchable target assembly of an active calibration device such that the planar light source target and the collimator target of the switchable target assembly respectively correspond to the modular tooling of the active calibration platform of the active calibration device comprises the steps of:
the planar light source target and the collimator target are translated or rotated synchronously, so that the positions or orientations of the planar light source target and the collimator target are changed to correspond to the module tools of the active calibration platform respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011412344.5A CN114594611B (en) | 2020-12-03 | 2020-12-03 | Active calibration device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011412344.5A CN114594611B (en) | 2020-12-03 | 2020-12-03 | Active calibration device and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114594611A CN114594611A (en) | 2022-06-07 |
| CN114594611B true CN114594611B (en) | 2024-03-22 |
Family
ID=81803219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011412344.5A Active CN114594611B (en) | 2020-12-03 | 2020-12-03 | Active calibration device and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114594611B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205120345U (en) * | 2015-11-26 | 2016-03-30 | 上海镭昊光电股份有限公司 | Flat optics capability test equipment that shows |
| CN107608174A (en) * | 2017-11-02 | 2018-01-19 | 宁波舜宇仪器有限公司 | Camera module test equipment |
| CN107643163A (en) * | 2017-09-28 | 2018-01-30 | 宁波舜宇仪器有限公司 | Module test equipment and method of testing |
| CN207460398U (en) * | 2017-11-28 | 2018-06-05 | 歌尔科技有限公司 | For the test fixture of testing lens parsing power |
| CN207502153U (en) * | 2017-09-28 | 2018-06-15 | 宁波舜宇仪器有限公司 | Module test equipment |
| WO2018228481A1 (en) * | 2017-06-14 | 2018-12-20 | 宁波舜宇光电信息有限公司 | Batch camera module testing device and testing system thereof |
| CN109781392A (en) * | 2019-03-12 | 2019-05-21 | 西安科佳光电科技有限公司 | A kind of large visual field optical system detection device and detection method |
| CN209964217U (en) * | 2019-08-01 | 2020-01-17 | 苏州松健光学科技有限公司 | Camera module test machine |
| CN111800567A (en) * | 2020-07-29 | 2020-10-20 | 苏州艾微视图像科技有限公司 | Compatible full angle camera focusing light source structure |
-
2020
- 2020-12-03 CN CN202011412344.5A patent/CN114594611B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205120345U (en) * | 2015-11-26 | 2016-03-30 | 上海镭昊光电股份有限公司 | Flat optics capability test equipment that shows |
| WO2018228481A1 (en) * | 2017-06-14 | 2018-12-20 | 宁波舜宇光电信息有限公司 | Batch camera module testing device and testing system thereof |
| CN107643163A (en) * | 2017-09-28 | 2018-01-30 | 宁波舜宇仪器有限公司 | Module test equipment and method of testing |
| CN207502153U (en) * | 2017-09-28 | 2018-06-15 | 宁波舜宇仪器有限公司 | Module test equipment |
| CN107608174A (en) * | 2017-11-02 | 2018-01-19 | 宁波舜宇仪器有限公司 | Camera module test equipment |
| CN207460398U (en) * | 2017-11-28 | 2018-06-05 | 歌尔科技有限公司 | For the test fixture of testing lens parsing power |
| CN109781392A (en) * | 2019-03-12 | 2019-05-21 | 西安科佳光电科技有限公司 | A kind of large visual field optical system detection device and detection method |
| CN209964217U (en) * | 2019-08-01 | 2020-01-17 | 苏州松健光学科技有限公司 | Camera module test machine |
| CN111800567A (en) * | 2020-07-29 | 2020-10-20 | 苏州艾微视图像科技有限公司 | Compatible full angle camera focusing light source structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114594611A (en) | 2022-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7684132B2 (en) | Lens barrel, method for fixing lens, and working apparatus for fixing lens | |
| CN110625256B (en) | Optical fiber coupling and welding device for butterfly laser | |
| KR101373829B1 (en) | High quality camera module assembly apparatus for efficiently testing and compensating the focus and axis of high angle lens for vehicle camera and assembly method using the same | |
| KR20050005708A (en) | Display panel inspection apparatus and inspection method | |
| CN107295235B (en) | Automatic approval device and automatic approval method for double-camera module | |
| US11689711B2 (en) | Configurable camera stimulation and metrology apparatus and method therefor | |
| CN114439827B (en) | Camera module assembly equipment and assembly method | |
| CN114594611B (en) | Active calibration device and method thereof | |
| CN114200615A (en) | Parallel grating clamping and adjusting frame | |
| CN116193107A (en) | Wide-angle and long-focus module compatible test structure and test device | |
| KR20180130619A (en) | Apparatus For Vision Inspection Capable Of Multi-Axial Active Adjustment | |
| CN114666464B (en) | Assembling method for periscope type camera module and periscope type camera module | |
| CN109826852B (en) | Camera alignment equipment | |
| CN213105067U (en) | Reflector seat | |
| CN219420872U (en) | Wide-angle and long-focus module compatible test structure and test device | |
| CN220872040U (en) | Debugging device and module test equipment | |
| CN220290028U (en) | Multi-freedom-degree motion platform capable of being adjusted in universal mode | |
| CN220399719U (en) | Optical lens adjusting system | |
| CN211121895U (en) | Novel high-compatibility optical test equipment | |
| CN216132909U (en) | Optical environment construction device and visual detection system | |
| CN212253992U (en) | Diversified detection tool | |
| CN217384663U (en) | Photoelectric system comprehensive detection platform | |
| KR100234269B1 (en) | Apparatus and method to adjust the location of lens holder for optical pickup | |
| CN110967799A (en) | Optical lens, camera module and application thereof | |
| CN215768887U (en) | Wafer detection device with stable structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |