CN104639936A - Automatic test method of camera - Google Patents
Automatic test method of camera Download PDFInfo
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- CN104639936A CN104639936A CN201510063249.1A CN201510063249A CN104639936A CN 104639936 A CN104639936 A CN 104639936A CN 201510063249 A CN201510063249 A CN 201510063249A CN 104639936 A CN104639936 A CN 104639936A
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Abstract
The invention relates to an automatic test method of a camera, which is used for controlling an automatic test device of the camera. The method comprises the following steps: S1, starting a rotating platform, wherein the rotating platform rotates from a loading-unloading area to a test area; S2, connecting an image collector with the camera on the rotating platform, S3, initializing a product, and collecting an image by an image collector; S4, focusing and testing, testing whether the camera reaches the specification standard, and ending the focusing if the camera is qualified; adjusting the focal length of the camera if the camera is not qualified, and testing the camera again, re-judging whether the camera reaches the specification standard, ending the focusing if the camera is qualified, otherwise readjusting the focal length and retesting the camera until the camera is qualified, or ending the focusing if the camera still cannot reach the focusing specification standard after exceeding the focusing steps; S5, restarting the rotating platform, and rotating the rotating platform from the test area to the loading-unloading area; displaying a test result; S6, loading and unloading, and repeating the steps S1 to S5.
Description
Technical field
The present invention relates to a kind of automatic test approach of camera, belong to the measuring technology of camera.
Background technology
Micro-camera is generally in order on mobile communication terminal, the critical piece of minisize pick-up head is camera, the quality of camera directly affects the clear of image and imaging, the test of current camera is divided into image measurement and focusing test, wherein in existing focusing test, the general manual work that adopts realizes, so, operating efficiency is lower, and the error rate detected is also large.
Because above-mentioned defect, the design people, actively in addition research and innovation, to founding a kind of automatic test approach of camera, make it have more value in industry.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of increasing work efficiency and the automatic test approach of camera of measuring accuracy.
The automatic test approach of a kind of camera of the present invention, the automatic test approach of described camera is used for the control of the automatic test equipment of camera, wherein, the automatic test equipment of described camera comprises test section, image acquisition device and the rotation platform in order to clamp camera, and the automatic test approach of described camera comprises the steps:
S1: camera to be measured is installed on rotation platform in loading and unloading district, start rotation platform, camera to be measured forwards test section to from loading and unloading district;
S2: image acquisition device is connected with the camera to be measured on rotation platform;
S3: product initialization, image acquisition device gathers image;
S4: focusing test, does test camera reach specification standards? as qualified, end of focusing; As otherwise adjustment again testing is carried out to the focal length of camera, again judge whether test camera reaches specification standards, if qualified, end of focusing, otherwise Focussing and test are until qualified again, or until still do not reach focusing specification standards, then end of focusing after exceeding the test of focusing step;
S5: again start rotation platform, forwards from test section the camera completing test to loading and unloading district, shows test results;
S6: in loading and unloading district, the camera completing test shifted out and repeat step S1 to S5.
Further, described rotation platform is provided with the clamp portion of at least two clamping cameras, the quantity of the corresponding clamp portion of quantity of described image acquisition device is arranged, and in described step S1, at least two clamp portion forward test section to simultaneously; In described step S2, the camera in the corresponding clamp portion of each image acquisition device difference; In described step S4, the camera in described at least two clamp portion carries out focusing test simultaneously.
Further, described automatic test equipment also comprises the focusing model parts being positioned at side, test section, sample table is provided with in described focusing model parts, described sample table has the test block of two kinds of colors that some adjacent spaces are arranged, the shape of described test block is parallelogram, in described step S1, when rotation platform forwards test section to, camera to be measured is towards sample table.
Further, in described two kinds of test block, a kind of shape of test block is rhombus, and the shape of another kind of test block is square, and wherein, the Minimum Internal Angle of rhombus is 80 °, and the angle on the base of foursquare base and sample table is 5 °.
Further, also comprise between described step S4 and S5: after focusing terminates, carry out image measurement again.
Further, when carrying out image measurement, the camera being positioned at test section carries out image measurement simultaneously.
Further, the automatic test equipment of described camera also comprises the focusing part being arranged on test section, in described step S4, is realized the Focussing of camera by focusing part.
Further, in described step S4, when focusing is focused, its focusing mode is: the definition according to obtaining image judges the angle that single step is focused, and when fuzzyyer, the angle of single step focusing is larger, when close to articulation point, the angle of single step focusing is less.
By such scheme, the present invention at least has the following advantages: by being applied on the automatic test equipment of camera by the automatic test approach of camera, thus achieving Aulomatizeted Detect, improve operating efficiency and measuring accuracy.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the automatic test equipment of camera of the present invention;
Fig. 2 is the part-structure schematic diagram of Fig. 1;
Fig. 3 is the part-structure schematic diagram of Fig. 2;
Fig. 4 is the part-structure schematic diagram of Fig. 3;
Fig. 5 is the part-structure schematic diagram of Fig. 4;
Fig. 6 is the part-structure schematic diagram of Fig. 5;
Fig. 7 is the sample table of the automatic test equipment for the camera in Fig. 1;
Fig. 8 is the workflow diagram of the automatic test approach of camera of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
See Fig. 1 to Fig. 6, the automatic test equipment 100 of a kind of camera described in a preferred embodiment of the present invention, in order to detect camera 200, comprises frame 1, the workbench 2 be arranged in frame 1, is arranged on focusing model parts 3 above workbench 2, is arranged on focusing model parts 3 with the focusing part 4 between workbench 2, in order to the image acquisition device clamping the rotation platform 5 of camera 200, the rotary drive 6 driving rotation platform 5 to horizontally rotate and be connected with camera 200 signal on rotation platform 5.The test chamber 11 that described frame 1 comprises cabinet chamber (not shown) and is arranged on above cabinet chamber, this cabinet chamber and test chamber 11 are separated by workbench 2.Described focusing model parts 3, focusing part 4, rotation platform 5, rotary drive 6 and image acquisition device are all arranged in test chamber 11, the left and right sides of test chamber 11 and rear side arrange shrouding 12, the upside of test chamber 11 arranges top board 13, and the front side of test chamber 11 is provided with operation control panel 14.Be connected and fixed by support 15 between described shrouding 12, top board 13 and workbench 2, the shrouding 12 being positioned at test chamber 11 rear is provided with cooling fan 16.Be provided with test section and loading and unloading district in described test chamber 11, this loading and unloading district is positioned at the outside of test section.
Be provided with LED light case (non-label) and sample table in described focusing model parts 3, this sample table is SFR or MTF model.The relative left and right sides of these focusing model parts 3 is provided with fixed head 31.This fixed head 31 offers perforate (non-label), be equipped with screw mandrel 32 and optical axis 33 in perforate, this screw mandrel 32 and optical axis 33 are perpendicular to workbench 2, and optical axis 33 is positioned at the both sides of screw mandrel 32, the bottom of optical axis 33 is fixed on cross bar 17, and this cross bar 17 is erected on front and back support 15.Described screw mandrel 32 is provided with the traveling nut 34 moved up and down along screw mandrel 32, for screw-driven is connected between screw mandrel 32 with traveling nut 34, traveling nut 34 is fixed on fixed head 31, when traveling nut 34 moves up and down on screw mandrel 32, drive fixed head 31 upper and lower displacement, and then drive focusing model parts 3 to move.The bottom of described screw mandrel 32 is provided with driven pulley 36, and described workbench 2 is also provided with motor 21, and described motor 21 is connected with driving pulley 37, and described driving pulley 37 is connected by driving-belt 22 with between driven pulley 36.Refer to Fig. 7, described sample table 35 is SFR model, its algorithm is based on ISO12233 canonical algorithm, this sample table 35 has the test block (respectively called after first test block 351 and the second test block 352) of two kinds of colors that some adjacent spaces are arranged, the shape of described two kinds of test block 351,352 is parallelogram, in the present embodiment, the color of two kinds of test block 351,352 is respectively black and white.In described two kinds of test block, the shape of the first test block 351 is rhombus, and the shape of the second test block 352 is square, and wherein, the Minimum Internal Angle of rhombus is 80 °, and the angle on the base of foursquare base and sample table 35 is 5 °.When testing, only need employing sample table 35 can support to test multiple camera simultaneously, and repaint new test chart without the need to carrying out complex technique when using this sample table 35 to test, can test the camera 200 of any amount, thus make not tested person camera number quantitative limitation.
Described rotation platform 5 comprises axle portion 51 as center of rotation and at least two installation portions 52 of being around in around axle portion 51.In the present embodiment, axle portion 51 is axis hole, and installation portion 52 is for being oppositely arranged on two of both sides, axle portion 51, and the angle that rotary drive 6 drives rotation platform 5 to rotate at every turn is 180 °.Really, in other embodiments, installation portion 52 also can be three or more.Each installation portion 52 is provided with the clamp portion 53 of at least two fixing cameras 200, in the present embodiment, on each installation portion 52, distribution is provided with four clamp portion 53.Each installation portion 52 all offers location hole (non-label), location hole is distributed in the side of clamp portion 53.Described workbench 2 is also provided with the keeper 23 of position rotating platform 5, this keeper 23 has and can be inserted into guide pillar in location hole 231 and drive described guide pillar 231 to insert or shift out the cylinder 232 of location hole.By coordinating of this keeper 23 and location hole, thus make stable testing.
Described focusing part 4 is arranged on the top of rotation platform 5, and it only can block 1/2 of rotation platform 5, is oppositely arranged after rotation platform 5 is located with one of them installation portion about 52.This focusing part 4 comprises multiple debugging localization tool 41, and the quantity of debugging localization tool 41 is identical with the quantity of the clamp portion 53 that part 4 of relatively focusing is arranged, and is four.Each debugging localization tool 41 adjusts the focal length of the camera 200 corresponding with it, and each debugging localization tool 41 comprises the focusing ring 411 of the focal length adjusting the camera 200 corresponding with it and is connected with described focusing ring 411 and controls the rotary module 412 that focusing ring 411 rotates.Described focusing part 4 is fixed on workbench 2 by lowering or hoisting gear 8, this lowering or hoisting gear 8 comprises the elevating bracket 81 be fixed on workbench 2, be fixed on the mobile platform 82 on elevating bracket 81 and drive the lifting motor 83 of mobile platform 82, this elevating bracket 81 is provided with lifting sliding rail 84, mobile platform 82 coordinates with lifting sliding rail 84, lifting sliding rail 84 moves up and down, and focusing part 4 is fixed on mobile platform 82.
Described test section is formed by workbench 2 and focusing part 4, and image acquisition device is arranged in test section, and it is oppositely arranged on the both sides up and down of installation portion 52 with focusing part 4.This image acquisition device is fixed on workbench 2 by mount pad 7, keeper 23 is fixed on the side of mount pad 7, be provided with the displacement regulating part (not shown) driving image acquisition device to move up and down in this mount pad 7, this displacement regulating part drives image acquisition device to move up and down to make image acquisition device be connected with camera 200 or disconnect.Described rotary drive 6 is gear box, has the rotating shaft be fixed in axis hole 51.The automatic test equipment 100 of described camera also comprises the relay lens 9 be arranged between focusing part 4 and focusing model parts 3, each described debugging localization tool 41 correspondence arranges a relay lens 9, imaging focal length can be shortened and conservative control imaging torsion resistance, to reduce the space of test chamber 11 by this relay lens 9.This relay lens 9 is fixed on mobile platform 82 by mounting panel 91.
The job order of automatic test equipment 100 when testing the focal length of camera 200 of above-mentioned camera is as follows: complete test when being oppositely arranged on the camera 200 on the installation portion 52 below focusing part 4, cylinder 232 starts, guide pillar 231 is driven to shift out location hole, start rotary drive 6, driving rotation platform 5 to rotate 180 ° makes the installation portion 52 in the loading and unloading district being positioned at outside move to test section, after the installation portion 52 being positioned at test section is positioned at the below of focusing part 4, again start cylinder 232, driving guide pillar 231 to be inserted in location hole makes rotation platform 5 locate, then, image acquisition device is in place to be moved under the driving of regulating part and moves, be connected with camera signals, then, focusing model parts 3 are controlled by testing software, focusing part 4 and image acquisition device are tested the camera 200 being positioned at test section, after test completes, image acquisition device is in place move the driving of regulating part under move down, image acquisition device and camera are disconnected, and finally repeat abovementioned steps.Wherein, while focusing model parts 3, focusing part 4 and image acquisition device are tested camera 200, shift out the camera 200 that completes test and on installation portion 52, install new camera to be measured 200.
In addition, the automatic test equipment 100 of this camera also comprises the LED light source part 10 be fixed on workbench 2, and this LED light source part 10 is fixed on track base 20.This track base 20 is fixed on workbench 2, track base 20 comprise be arranged in parallel with workbench 2 guide rail 201, supporting guide 201 support column 202, to be arranged on guide rail 201 and can along the sliding seat 203 of guide rail 201 movement and the translation motor 204 driving the movement on guide rail 201 of described sliding seat 203, this guide rail 201 extends along workbench about 2, and sliding seat 203 can horizontally slip on guide rail 201.Described LED light source part 10 is fixed on sliding seat 203, and LED light source part 10 moves to directly over rotation platform 5 by sliding seat 203, is blocked by one of them installation portion 52.Whether LED light source part 10 has stain and dirty etc. in order to detect image after camera 200 imaging, completes image measurement.Focusing model parts 3, in order to test the focusing of camera 200, complete focusing test.Above-mentioned image measurement and focusing test are in use, cannot test simultaneously, when carrying out focusing test, LED light source part 10 moves to right side or the left side of rotation platform 5 by track base 20, do not block rotation platform 5, focusing part 4 is displaced downwardly to suitable position under the driving of lowering or hoisting gear 8, then carries out focusing test; When carrying out image measurement, focusing part 4 moves up under the driving of lowering or hoisting gear 8, its level height is higher than LED light source part 10, then by track base 20, LED light source part 10 is moved to immediately below focusing part 4, namely move to the relative top that one of them is provided with the installation portion 52 of camera 200 to be tested, then carry out image measurement.Be provided with cable drag chain 30 in described test chamber 11, to collect the cable of lifting motor 83 and translation motor 204, make test chamber 11 clean and tidy.
Due to focusing model parts 3, the cooperatively interacting of focusing part 4, rotation platform 5 and image acquisition device, achieve Aulomatizeted Detect, improve operating efficiency and accuracy of detection.In addition, by arranging the clamp portion 53 of multiple fixing camera 200 on each installation portion 52, making multiple station share a model, completing the test of multiple camera 200 simultaneously, further increase operating efficiency.
Refer to Fig. 8 and composition graphs 1 to 7, the automatic test approach of camera of the present invention, for the control of the automatic test equipment 100 of above-mentioned camera, wherein, the automatic test equipment 100 of described camera comprise test section, image acquisition device, in order to clamp camera 200 rotation platform 5, be arranged on the focusing part 4 of test section and be positioned at the focusing model parts 3 of side, test section.Described rotation platform 5 is provided with the clamp portion 53 of at least two clamping cameras 200, the quantity of the corresponding clamp portion 53 of quantity of described image acquisition device is arranged.Style table 35 is provided with in described focusing model parts 3, described style table 35 has the test block 351,352 of two kinds of colors that some adjacent spaces are arranged, the shape of described test block 351,352 is parallelogram, in described two kinds of test block 351,352, a kind of shape of test block is rhombus, the shape of another kind of test block is square, wherein, the Minimum Internal Angle of rhombus is 80 °, and the angle on the base of foursquare base and style table 35 is 5 °.The automatic test approach of described camera comprises S1 to S6.
S1: be installed on rotation platform 5 by camera 200 to be measured in loading and unloading district, start rotation platform 5, camera 200 to be measured forwards test section to from loading and unloading district.When rotation platform 5 forwards test section to, camera 200 to be measured is towards style table 35.In the present embodiment, the clamp portion 53 clamping camera 200 adopts four, so four clamp portion 53 forward test section to simultaneously.
S2: image acquisition device is connected with the camera 200 to be measured on rotation platform 5.It should be noted that at this: in the aforementioned embodiment, each image acquisition device distinguishes the camera 200 of in a corresponding clamp portion 53.
S3: product initialization, image acquisition device gathers image.
S4: focusing test, does test camera 200 reach specification standards? as qualified, end of focusing; As otherwise adjustment again testing is carried out to the focal length of camera 200, again judge whether test camera 200 reaches specification standards, if qualified, end of focusing, otherwise Focussing and test are until qualified again, or until still do not reach focusing specification standards, then end of focusing after exceeding the test of focusing step.Because clamp portion 53 adopts four, so the camera 200 in four clamp portion 53 carries out focusing test simultaneously, it realizes the Focussing of camera 200 by focusing part 4.
S5: again start rotation platform 5, forward from test section the camera 200 completing test to loading and unloading district, show test results;
S6: in loading and unloading district, the camera 200 completing test shifted out and repeat step S1 to S5.
Also comprise between above-mentioned steps S4 and S5: after focusing terminates, carry out image measurement again.When carrying out image measurement, the camera 200 being positioned at test section carries out image measurement simultaneously.
In described step S4, when focusing is focused, its focusing mode is: the definition according to obtaining image judges the angle that single step is focused, and when fuzzyyer, the angle of single step focusing is comparatively large, and when close to articulation point, the angle of single step focusing is less.
In sum, by being applied on the automatic test equipment 100 of camera by the automatic test approach of camera, thus achieving Aulomatizeted Detect, improve operating efficiency and measuring accuracy.
The above is only the preferred embodiment of the present invention; be not limited to the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (8)
1. the automatic test approach of a camera, it is characterized in that: the automatic test approach of described camera is used for the control of the automatic test equipment of camera, wherein, the automatic test equipment of described camera comprises test section, image acquisition device and the rotation platform in order to clamp camera, and the automatic test approach of described camera comprises the steps:
S1: camera to be measured is installed on rotation platform in loading and unloading district, start rotation platform, camera to be measured forwards test section to from loading and unloading district;
S2: image acquisition device is connected with the camera to be measured on rotation platform;
S3: product initialization, image acquisition device gathers image;
S4: focusing test, does test camera reach specification standards? as qualified, end of focusing; As otherwise adjustment again testing is carried out to the focal length of camera, again judge whether test camera reaches specification standards, if qualified, end of focusing, otherwise Focussing and test are until qualified again, or until still do not reach focusing specification standards, then end of focusing after exceeding the test of focusing step;
S5: again start rotation platform, forwards from test section the camera completing test to loading and unloading district, shows test results;
S6: in loading and unloading district, the camera completing test shifted out and repeat step S1 to S5.
2. the automatic test approach of camera according to claim 1, it is characterized in that: the clamp portion described rotation platform being provided with at least two clamping cameras, the quantity of the corresponding clamp portion of quantity of described image acquisition device is arranged, in described step S1, at least two clamp portion forward test section to simultaneously; In described step S2, the camera in the corresponding clamp portion of each image acquisition device difference; In described step S4, the camera in described at least two clamp portion carries out focusing test simultaneously.
3. the automatic test approach of camera according to claim 1 and 2, it is characterized in that: described automatic test equipment also comprises the focusing model parts being positioned at side, test section, sample table is provided with in described focusing model parts, described sample table has the test block of two kinds of colors that some adjacent spaces are arranged, the shape of described test block is parallelogram, in described step S1, when rotation platform forwards test section to, camera to be measured is towards sample table.
4. the automatic test equipment of camera according to claim 3, it is characterized in that: in described two kinds of test block, a kind of shape of test block is rhombus, the shape of another kind of test block is square, wherein, the Minimum Internal Angle of rhombus is 80 °, and the angle on the base of foursquare base and sample table is 5 °.
5. the automatic test approach of camera according to claim 1 and 2, is characterized in that: also comprise between described step S4 and S5: carry out image measurement again after focusing terminates.
6. the automatic test approach of camera according to claim 5, is characterized in that: when carrying out image measurement, and the camera being positioned at test section carries out image measurement simultaneously.
7. the automatic test approach of camera according to claim 1, is characterized in that: the automatic test equipment of described camera also comprises the focusing part being arranged on test section, in described step S4, is realized the Focussing of camera by focusing part.
8. the automatic test approach of camera according to claim 1, it is characterized in that: in described step S4, when focusing is focused, its focusing mode is: the definition according to obtaining image judges the angle that single step is focused, when fuzzyyer, the angle of single step focusing is comparatively large, and when close to articulation point, the angle of single step focusing is less.
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| CN106060531A (en) * | 2016-05-25 | 2016-10-26 | 珠海市广浩捷精密机械有限公司 | Fully automatic four-station pick-up head testing machine |
| CN106101561A (en) * | 2016-08-09 | 2016-11-09 | 青岛海信移动通信技术股份有限公司 | Camera focusing detection method and device |
| CN106878603A (en) * | 2015-12-11 | 2017-06-20 | 东莞东聚电子电讯制品有限公司 | The connection version adjusting method of camera module in smart mobile phone |
| CN107333123A (en) * | 2016-04-28 | 2017-11-07 | 和硕联合科技股份有限公司 | Detecting system of focusing and focusing detection method |
| CN109743569A (en) * | 2019-02-26 | 2019-05-10 | 深圳中天云创科技有限公司 | A kind of quickcam image focusing method and device |
| CN111435988A (en) * | 2019-01-15 | 2020-07-21 | 沅圣科技股份有限公司 | Camera automatic focusing detection method and device |
| CN111879499A (en) * | 2020-09-28 | 2020-11-03 | 常州市瑞泰光电有限公司 | Optical image stabilization performance test method for camera driving motor |
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