CN106842805B - Camera module PDAF function detector and detection method thereof - Google Patents
Camera module PDAF function detector and detection method thereof Download PDFInfo
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- CN106842805B CN106842805B CN201710212564.5A CN201710212564A CN106842805B CN 106842805 B CN106842805 B CN 106842805B CN 201710212564 A CN201710212564 A CN 201710212564A CN 106842805 B CN106842805 B CN 106842805B
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
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Abstract
The invention discloses a camera module PDAF function detector, which comprises a detector body, wherein a plurality of detection stations, a long-range view detection mechanism, a short-range view detection mechanism and a black and white field detection mechanism are arranged on the detector body; the detection stations are circularly and alternately conveyed to the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism in sequence along a first conveying direction; and the conveying mechanism is used for conveying the plurality of detection stations to the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism so as to detect the PDAF function of the camera module. A method for detecting the PDAF function of a camera module comprises the following steps: step one; step two; step three; and step four. The invention completes the test of different focal lengths, white fields and black fields of a plurality of camera modules in one-time conveying process, and has high detection efficiency.
Description
Technical Field
The invention relates to the technical field of camera module detection equipment, in particular to a camera module PDAF function detector and a detection method thereof.
Background
The PDAF is phase focusing, and the principle of the PDAF is that a plurality of shielding pixel points are reserved on a photosensitive element and are specially used for phase detection, and a focusing offset value is determined according to the distance between pixels, the change of the distance between the pixels and the like, so that accurate focusing is realized. During detection, the focus is not required to be found by adjusting the lens group back and forth during phase focusing, but the current position of the focus is judged to be close to the front or the back through a signal detected by a camera at the beginning of focusing, and a driving module of the novel focusing informing lens is accurately used for directly pushing the lens group to the accurate focus position. However, the existing detection machine has a complex detection structure and low detection efficiency, and cannot meet industrial requirements.
Disclosure of Invention
In order to overcome the defects of the prior art, an objective of the present invention is to provide a camera module PDAF function detector, which can complete the tests of different focal lengths and white and black fields of a plurality of camera modules in one transportation process, and has high detection efficiency.
One of the purposes of the invention is realized by adopting the following technical scheme:
the camera module PDAF function detector comprises,
the camera module comprises a machine body, wherein a plurality of detection stations for placing the camera module, a long-range view detection mechanism, a short-range view detection mechanism and a black and white field detection mechanism are arranged on the machine body; the detection stations sequentially pass in and out the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism in a circulating and staggered manner along a first conveying direction;
and the conveying mechanism is used for conveying the detection stations to the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism in sequence in a circulating and staggered manner along the first conveying direction so as to detect the PDAF function of the camera module.
Preferably, the conveying mechanism comprises a mounting frame and a first driving mechanism; the mounting rack is rotatably arranged on the machine body; the first driving mechanism is used for driving the mounting rack to rotate along the first conveying direction; the plurality of inspection stations are formed on the mounting and are arranged in a circumferential array about the axis of rotation of the mounting; the long-range view detection mechanism, the short-range view detection mechanism and the black-and-white field detection mechanism are arrayed on the machine body around the circumference of the rotation axis of the mounting frame and are positioned on the outer side of the mounting frame.
Preferably, the first driving mechanism is configured to drive the mounting frame to rotate around a second conveying direction, and the second conveying direction is opposite to the first conveying direction.
Preferably, the distant view detection mechanism comprises a distant view test piece provided with a distant view test image and a second driving mechanism for driving the distant view test piece to move towards or away from the detection station;
the long-range view test piece comprises a long-range view light source, a light shielding plate, a transmission type target plate and a distance-increasing mirror assembly, wherein the light shielding plate is positioned on one side of the long-range view light source close to the detection station; the transmission type target plate is arranged on the light shielding plate and is used for being opposite to the detection station; the distance-increasing mirror assembly is positioned on one side of the light shielding plate close to the detection station.
Preferably, the close-range detection mechanism comprises a close-range test piece provided with a close-range test image and a third driving mechanism used for driving the close-range test piece to move towards or away from the detection station.
Preferably, the black-and-white field detection mechanism comprises a test board, a black field test piece, a white field test piece and a fourth driving mechanism, the black field test piece and the white field test piece are both mounted on the test board, and the fourth driving mechanism is used for driving the test board to move towards or away from the detection station.
Preferably, the machine body is further provided with a feeding mechanism, and the feeding mechanism is used for clamping the camera module to the detection station.
Preferably, an automatic crimping jig is arranged on the detection station.
The invention also provides a method for detecting the PDAF function of the camera module, which has high detection efficiency.
The second purpose of the invention is realized by adopting the following technical scheme:
a method for detecting the PDAF function of a camera module comprises the following steps:
clamping a camera module to a detection station of a camera module PDAF function detector;
step two, the camera module on the detection station is conveyed to a distant view detection mechanism along a first conveying direction through a conveying mechanism on the camera module PDAF function detector, so that the distant view shooting focal length of the camera module is detected;
after the test of the long-range view camera shooting focal length of the camera module is finished, the camera module is continuously conveyed to a short-range view detection mechanism through a conveying mechanism along a first conveying direction, and the short-range view camera shooting focal length of the camera module is detected at the short-range view detection mechanism;
and step four, after the test of the close shot camera focal length of the camera module is completed, the camera module is continuously conveyed to the black and white field detection mechanism along the first conveying direction through the conveying mechanism, and black field detection and white field detection are carried out on the camera module.
Preferably, after the fourth step, the camera module is conveyed to the detection station along the second conveying direction through the conveying mechanism, and the camera module on the detection station is taken down through a feeding mechanism on the camera module PDAF function detector; the second conveying direction is opposite to the first conveying direction.
Compared with the prior art, the invention has the beneficial effects that: the camera module can be sequentially conveyed to the distant view detection mechanism, the close view detection mechanism and the black and white field detection mechanism in a circulating and staggered mode through the conveying mechanism, different focal lengths of the camera modules and tests of the white field and the black field are completed in one-time conveying engineering, detection is comprehensive, the automation degree is high, and the detection efficiency is high.
Drawings
FIG. 1 is a schematic view of the structure of the inspection machine of the present invention;
FIG. 2 is a partial schematic view of the present invention;
FIG. 3 is a schematic structural view of a mount of the present invention;
fig. 4 is a schematic structural diagram of the long-range view detection mechanism, the short-range view detection mechanism, and the black-and-white field detection mechanism of the present invention.
In the figure: 100. a body; 10. detecting a station; 11. automatic crimping tools; 20. a distant view detection mechanism; 21. a perspective test piece; 22. a visor; 23. a lens assembly; 24. a second drive mechanism; 25. a range-increasing mirror assembly; 26. a fifth drive mechanism; 30. a close-range detection mechanism; 31. a close-range test piece; 32. a third drive mechanism; 40. a white field detection mechanism and a black field detection mechanism; 41. a white field detection mechanism; 42. a black field detection mechanism; 43. a fourth drive mechanism; 50. a mounting frame; 60. a feeding mechanism; 70. a first drive mechanism.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
the camera module PDAF function detector shown in fig. 1-4 comprises a body and a conveying mechanism mounted on the body. The machine body is provided with a plurality of detection stations, a long-range view detection mechanism, a short-range view detection mechanism and a black and white field detection mechanism, and the detection stations can be conveyed to the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism in a circulating and staggered manner along a first conveying direction under the driving of the conveying mechanism.
On the basis of the structure, when the camera module PDAF function detector is used, a feeding station can be arranged on a machine body, a plurality of detection stations can be arranged at the feeding station in sequence, then the camera module is installed on the detection stations, meanwhile, the conveying mechanism is started, under the driving of the conveying mechanism, the camera module is placed on the detection stations at the feeding station in sequence by the detection stations, then the camera module enters the distant view detection mechanism under the conveying of the conveying mechanism, and the distant view shooting focal distance is detected at the distant view detection mechanism; after the long-range shooting focal length of the camera module at the detection station is detected, the camera module is conveyed to the short-range detection mechanism by the conveying mechanism, and the short-range shooting focal length is detected at the short-range detection mechanism (at this time, the camera module at the next detection station behind the detection station detects the long-range shooting focal length at the long-range detection mechanism); then, the conveying mechanism conveys the camera module on the detection station to the black-and-white field detection mechanism, and performs black field and white field detection on the camera module (the same camera module on the next detection station after the detection station performs close-range camera focal length detection at the distant-range detection mechanism). Thus, the PDAF detection of the camera module on the detection station is completed. Analogize in proper order, alright under conveying mechanism's drive, accomplish the detection of the PDAF of a plurality of camera modules on a plurality of detection stations, detect comprehensively, degree of automation is high, and detection efficiency is high.
Preferably, in this embodiment, the conveying mechanism may include a mounting frame and a first driving mechanism, the mounting frame is rotatably mounted on the machine body, and the first driving mechanism may be configured to drive the mounting frame to rotate along the first conveying direction (on the basis of this structure, the first conveying direction is a rotation direction of the mounting frame). The detection device comprises a mounting frame, a plurality of detection stations, a plurality of detection units and a plurality of detection units, wherein the plurality of detection stations are formed on the mounting frame and are circumferentially arrayed around a rotation axis of the mounting frame, namely the detection stations are uniformly distributed on the rotation circumference of the mounting frame; on the basis of the structure, the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism are also arrayed on the machine body around the rotation axis circumference of the mounting frame and are positioned on the outer side of the mounting frame. Specifically, in this embodiment, above-mentioned distant view detection mechanism, close-range view detection mechanism, black and white field detection mechanism distribute in around the mounting bracket, single detection station corresponds with distant view detection mechanism, close-range view detection mechanism, black and white field detection mechanism in proper order after the mounting bracket rotates a fixed angle, and a plurality of detection stations advance in proper order at the mounting bracket pivoted in-process, accomplish the detection of the camera module on each detection station, and the camera module on a plurality of detection stations of being convenient for on the one hand detects in order. On the other hand, compared with a linear conveying mode, the rotary conveying mode can effectively save the installation space on the machine body and reduce the size of the detection machine.
On the basis of the structure, first actuating mechanism still can drive the mounting bracket rotates around a second direction of delivery, second direction of delivery with first direction of delivery is opposite, so, rotation to black and white field detection mechanism department on first detection station, after accomplishing all PDAF function detections, the first actuating mechanism of accessible drives the mounting bracket and rotates along second direction of delivery, the mounting bracket gyration promptly, at the rotatory in-process of mounting bracket, the camera module that is in different inspection mechanism departments can be in proper order to the propelling movement back, when first inspection station gets back to original material loading station department, take off the camera module, and all subsequent inspection stations have all been turned round the same angle of having moved, also can accomplish all PDAF function detections equally. The forward and reverse rotation mode enables the camera module to be capable of loading and unloading at the same position, and prevents a circuit on the detector from being wound to influence the rotation of the mounting rack.
Taking this embodiment as an example, the first driving motor may be a motor, and the mounting frame may be preferably square, so that the mounting frame has a first side, a second side, a third side and a fourth side that are connected in sequence, two detection stations are arranged on four sides of the mounting rack, the first side of the mounting rack is used as a feeding station (and a discharging station simultaneously), the long-range view detection mechanism is arranged on the second side of the mounting frame, the short-range view detection mechanism is arranged on the third side of the mounting frame, the black and white field detection mechanism is arranged on the third side of the mounting frame, that is, eight inspection stations are arranged on the mounting frame, after the two inspection stations on the first edge of the mounting frame are fed, under the drive of motor, can make the mounting bracket rotate 90 degrees in proper order, reach black and white field detection mechanism department after the camera module on first side rotates 270 degrees, accomplish the inspection of all long shot focus, close shot focus and black field and white field. At this moment, the camera module on the second side completes close-range camera focal length detection, the camera module on the third side completes distant-range camera focal length detection, and the camera module on the fourth side is loaded at the loading station. At the moment, the mounting frame is rotated reversely through the motor, after the camera on the first side rotates reversely by 270 degrees, the camera module on the first side can be taken down when the camera returns to the feeding station, at the moment, the camera module on the second side is located at the black and white field detection mechanism, the camera module on the third side is located at the close shot module detection mechanism, and the camera module on the fourth side can sequentially pass through the black and white field detection mechanism, the close shot detection mechanism and the far shot detection mechanism to complete all detection. Therefore, the PDAF function test of the camera modules can be completed in sequence through the forward rotation and reverse rotation alternation of the mounting rack.
Preferably, the perspective detection mechanism includes a perspective test piece and a second driving mechanism, a perspective test image is arranged on the perspective test piece, the second driving mechanism can drive the perspective test piece to move towards or away from the second driving mechanism of the detection station, specifically, the second driving mechanism can drive the perspective test piece to move along the length direction and the width direction of the machine body, so that the position of the perspective test piece is adjusted in two directions, motorized focusing is facilitated, and the degree of automation is higher.
Specifically, the distant view test piece comprises a distant view light source, a light shielding plate, a transmission type target plate and a distance-increasing mirror assembly, wherein the light shielding plate is positioned on one side of the distant view light source close to the detection station; the transmission type target plate is arranged on the shading plate and is used for being opposite to the detection station, and therefore, a long-range test image is lightened through the long-range light source, light rays penetrate through the transmission type target plate to enable the camera module to be focused, and test operation is completed. The light shielding plate can prevent the influence of external factors due to too long optical path when the long shot focal length is tested. The distance-increasing mirror assembly can be positioned on one side of the light screen close to the detection station, so that the test focal length can be increased, the actual distance between the distant view light source and the detection station is shortened, and the volume of the whole machine body is reduced. Of course, the distance-increasing mirror assembly can be formed by a lens group, and the distance-increasing mirror assembly can be driven by the fifth driving mechanism to move along the width direction of the machine body, so that the distance-increasing mirror assembly can be close to or far away from the inspection station, and can be close to the inspection station when the distance is required to be increased, and can be far away when the distance is not required to be increased. The fifth driving mechanism can be a servo stepping motor, and is convenient to control.
Similarly, the close-range detection mechanism comprises a close-range test piece and a third driving mechanism, a close-range test image is arranged on the close-range test piece, the third driving mechanism can drive the close-range test piece to move towards or away from the detection station, and specifically, the third driving mechanism can drive the close-range test piece to move along the length direction and the width direction of the machine body, so that the position of the close-range test piece is adjusted in two directions, motorized focusing is facilitated, and the degree of automation is higher. The second driving mechanism and the third driving mechanism may be implemented by using a robot.
In addition, the black-and-white field detection mechanism can specifically comprise a test board, a black field test piece, a white field test piece and a fourth drive mechanism, the black field test piece and the white field test piece are both arranged on the test board, the fourth drive mechanism can be used for driving the test board to move towards the fourth drive mechanism close to or far away from the detection station, and similarly, the fourth drive mechanism can drive the test board to move along the width direction of the body, so that the black field test piece and the white field test piece alternately appear at the detection station, the white field test and the black field test of the camera module are facilitated, the positions of the white field test piece and the black field test piece are flexibly adjusted, and the automation degree is higher.
Preferably, still be equipped with feed mechanism on the organism, this feed mechanism is used for pressing from both sides the camera module group and gets to detect the station, make this detector can realize unloading in the automation, degree of automation is higher. And under this feed mechanism's the condition, the unloading of detection machine can be gone on through the manual work, belongs to semi-automatic machine, still can realize. Of course, the mechanism can also be realized by a robot.
Preferably, still can be equipped with automatic crimping tool on detecting station, install in detecting station department at camera module, but this automatic crimping tool automatic crimping camera module makes camera module fix in inspection station department and with organism electric connection, the later stage of being convenient for detects.
The invention also provides a method for detecting the PDAF function of the camera module, which has high detection efficiency.
In this embodiment, a method for detecting a PDAF function of a camera module is further provided, which includes the following steps:
clamping a camera module to a detection station of a camera module PDAF function detector;
step two, the camera module on the detection station is conveyed to a distant view detection mechanism along a first conveying direction through a conveying mechanism on the camera module PDAF function detector, so that the distant view shooting focal length of the camera module is detected;
after the test of the long-range view camera shooting focal length of the camera module is finished, the camera module is continuously conveyed to a short-range view detection mechanism through a conveying mechanism along a first conveying direction, and the short-range view camera shooting focal length of the camera module is detected at the short-range view detection mechanism;
and step four, after the test of the close shot camera focal length of the camera module is completed, the camera module is continuously conveyed to the black and white field detection mechanism along the first conveying direction through the conveying mechanism, and black field inspection and white field detection are carried out on the camera module.
According to the detection method, the plurality of detection stations can be sequentially conveyed to the distant view detection mechanism, the close view detection mechanism and the black and white field detection mechanism in a circulating and staggered mode through the conveying mechanism, tests of different focal lengths and the white field and the black field of the plurality of camera modules are completed in one-time conveying engineering, detection is comprehensive, the degree of automation is high, and the detection efficiency is high.
Preferably, after the fourth step, the camera module is conveyed to the detection station along the second conveying direction through the conveying mechanism, and the camera module on the detection station is taken down through a feeding mechanism on the camera module PDAF function detector; the second conveying direction is opposite to the first conveying direction. So, rotation to black and white field detection mechanism department on first detection station, accomplish all PDAF function and detect after, the first actuating mechanism of accessible drives the mounting bracket and rotates along second direction of delivery, the mounting bracket gyration promptly, at the in-process of mounting bracket gyration, the camera module that is in different inspection mechanism departments can be in proper order back propelling movement, when first inspection station gets back to original material loading station department, take off the camera module, and all subsequent inspection stations have all been moved the same angle toward the gyration, also can accomplish all PDAF function and detect equally. The forward and reverse rotation mode enables the camera module to be capable of loading and unloading at the same position, and prevents a circuit on the detector from being wound to influence the rotation of the mounting rack.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (9)
1. The camera module PDAF function detector is characterized by comprising,
the camera module comprises a machine body, wherein a plurality of detection stations for placing the camera module, a long-range view detection mechanism, a short-range view detection mechanism and a black and white field detection mechanism are arranged on the machine body; the detection stations sequentially pass in and out the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism in a circulating and staggered manner along a first conveying direction;
the conveying mechanism is used for conveying the detection stations to the long-range view detection mechanism, the short-range view detection mechanism and the black and white field detection mechanism in a circulating and staggered manner along the first conveying direction so as to detect the PDAF function of the camera module; the conveying mechanism comprises a mounting frame and a first driving mechanism; the mounting rack is rotatably arranged on the machine body; the first driving mechanism is used for driving the mounting rack to rotate along the first conveying direction; the plurality of inspection stations are formed on the mounting and are arranged in a circumferential array about the axis of rotation of the mounting; the long-range view detection mechanism, the short-range view detection mechanism and the black-and-white field detection mechanism are arrayed on the machine body around the circumference of the rotation axis of the mounting frame and are positioned on the outer side of the mounting frame.
2. The camera module PDAF function detector of claim 1, wherein said first drive mechanism is configured to rotate said mounting frame about a second transport direction, said second transport direction being opposite to said first transport direction.
3. The camera module PDAF function detector of claim 1 or 2, wherein the perspective detection mechanism comprises a perspective test piece provided with a perspective test image, and a second driving mechanism for driving the perspective test piece to move towards or away from the detection station;
the long-range view test piece comprises a long-range view light source, a light shielding plate, a transmission type target plate and a distance-increasing mirror assembly, wherein the light shielding plate is positioned on one side of the long-range view light source close to the detection station; the transmission type target plate is arranged on the light shielding plate and is used for being opposite to the detection station; the distance-increasing mirror assembly is positioned on one side of the light shielding plate close to the detection station.
4. The camera module PDAF function detector of claim 1 or 2, wherein the close-range detection mechanism comprises a close-range test piece provided with a close-range test image and a third driving mechanism for driving the close-range test piece to move towards or away from the detection station.
5. The camera module PDAF function detector of claim 1 or 2, wherein the black and white field detecting mechanism comprises a test board, a black field test part, a white field test part and a fourth driving mechanism, the black field test part and the white field test part are both mounted on the test board, and the fourth driving mechanism is used for driving the test board to move towards or away from the detection station.
6. The camera module PDAF function detector as claimed in claim 1 or 2, wherein a feeding mechanism is further provided on the body, the feeding mechanism is used for clamping the camera module to the detection station.
7. The camera module PDAF function detector of claim 1 or 2, wherein an automatic crimping jig is arranged on the detection station.
8. The method for detecting the PDAF function of the camera module, which is characterized in that the camera module PDAF function detector as claimed in any one of claims 1 to 7 is adopted to execute the following steps:
clamping a camera module to a detection station of a camera module PDAF function detector;
step two, the camera module on the detection station is conveyed to a distant view detection mechanism along a first conveying direction through a conveying mechanism on the camera module PDAF function detector, so that the distant view shooting focal length of the camera module is detected;
after the test of the long-range view camera shooting focal length of the camera module is finished, the camera module is continuously conveyed to a short-range view detection mechanism through a conveying mechanism along a first conveying direction, and the short-range view camera shooting focal length of the camera module is detected at the short-range view detection mechanism;
and step four, after the test of the close shot camera focal length of the camera module is completed, the camera module is continuously conveyed to the black and white field detection mechanism along the first conveying direction through the conveying mechanism, and black field detection and white field detection are carried out on the camera module.
9. The method for detecting the PDAF function of the camera module group as recited in claim 8, wherein after the step four, the camera module group is conveyed to the detection station along the second conveying direction through the conveying mechanism, and the camera module group on the detection station is taken down through a feeding mechanism on the PDAF function detector of the camera module group; the second conveying direction is opposite to the first conveying direction.
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| CN105516708A (en) * | 2015-11-23 | 2016-04-20 | 深圳市东盈讯达电子有限公司 | Camera module multi-point parameter automatic detection device |
| CN105530509A (en) * | 2015-11-23 | 2016-04-27 | 深圳市东盈讯达电子有限公司 | Four-work station camera module multi-point parameter automatic detection device |
| CN205353566U (en) * | 2015-12-15 | 2016-06-29 | 广东光阵光电科技有限公司 | Camera module auto focus functional test device |
| CN205490962U (en) * | 2016-02-25 | 2016-08-17 | 群光电子(苏州)有限公司 | A compound light box of multistation for camera detection |
| CN105872533A (en) * | 2016-03-31 | 2016-08-17 | 深圳大宇精雕科技有限公司 | Camera module detection device of burning equipment |
| CN206757293U (en) * | 2017-04-01 | 2017-12-15 | 深圳眼千里科技有限公司 | Camera module PDAF function detectors |
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