CN201965383U - Double optical magnification image collection device and image collection control and treatment system - Google Patents
Double optical magnification image collection device and image collection control and treatment system Download PDFInfo
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- CN201965383U CN201965383U CN2010205903045U CN201020590304U CN201965383U CN 201965383 U CN201965383 U CN 201965383U CN 2010205903045 U CN2010205903045 U CN 2010205903045U CN 201020590304 U CN201020590304 U CN 201020590304U CN 201965383 U CN201965383 U CN 201965383U
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Abstract
The utility model discloses a double optical magnification image collection device and an image collection control and treatment system. The image collection device comprises a main camera, an auxiliary camera, a main camera lens, an auxiliary camera lens, a first reflector, a second reflector, a cylinder and a light source, wherein the main camera lens and the auxiliary camera lens have different optical magnifications, the main camera and the main camera lens are arranged right above the light source, and the auxiliary camera, the auxiliary camera lens, the first reflector and the second reflector are all arranged above the light source. The image collection device has two optical paths with different optical magnifications, and the position of the second reflector is changed by controlling the motion of the cylinder so as to realize switching between the optical paths and acquire images with different optical resolutions; the loss of reflected light strength is reduced with switching of the optical paths of the reflectors; with the utilization of the structure, an original single image resolution inspection instrument can be conveniently upgraded into a double resolution inspection instrument; and the whole image collection device has a compact structure.
Description
Technical field
The utility model relates to the image capture device that utilizes image to carry out the component surface quality check, specifically is meant a kind of pair of optics enlargement ratio image collecting device and image acquisition control processing system.
Background technology
The one or more cameras of the general use of automatic visual inspection instrument that are used for the surface mounting technology industry, be equipped with the camera lens of fixed optics enlargement ratio, as shown in Figure 1 (wherein, 21 expression cameras, 22 expression camera lenses, 23 expression light sources, 24 expression PCB), the optics enlargement ratio of camera lens is selected according to accuracy of detection and detection speed.Image resolution ratio in 20 microns/pixel～25 micron/during pixel, for the element of 0402 and 0603 package dimensions commonly used on the present circuit board, the detection accuracy rate of automatic visual inspection instrument and speed can fine taking into account; Along with the electronic equipment high density, the development trend of little encapsulation, some circuit boards progressively use littler encapsulation as 0201 even 01005 element, all have only half of 0402 element as 0201 element is long and wide, like this in the image of optical check instrument, the area of 0201 element has only 1/4 of 0402 element, because image pixel very little, when the image resolution ratio of 20 microns/pixel of employing or 25 microns/pixel detects 0201 element, rate of false alarm obviously raises, a large amount of experimental datas show, to detect 0201 element accurately and reliably, generally need the image resolution ratio of 10 microns/pixel～15 micron/pixel.But used the circuit board of 0201 little potted element at present, 0201 element only accounts for the fraction of whole panel element, 0402 and 0603 potted element still is in the great majority, if the optical check instrument is used the resolution of 10 microns/pixel～15 micron/pixel instead, become original 4 times the detection time of a then whole circuit board! It is unacceptable that detection speed descends for most of user significantly.
Guarantee that this class has the accuracy rate and the whole plate detection speed of the circuit board detecting of 0201 element, can adopt two kinds of solutions, scheme one is to adopt the variable change times camera lens of optics enlargement ratio, utilize change times camera lens can realize multiple image resolution ratio, the benefit of this scheme is that camera, camera lens and light source all only need one, but it is longer to become times camera lens, entire image harvester volume is big, and the image collecting device of automatic visual inspection instrument need be above circuit board high-speed mobile, excessive bulk and high center of gravity require somascope to have very high mechanical stability; Become times camera lens price height in addition, the light channel structure complexity, light intensity loss is bigger, and is very high for the brightness requirement of light source; Scheme two is to use two cover camera and camera lenses, as shown in Figure 2 (wherein, 31 expression cameras 1,32 expression camera lenses, 1,33 expression spectroscope, 34 expression catoptrons, 35 expression light sources, 36 expression PCB, 41 expression cameras 2,42 expression camera lenses 2), constitute two light paths, realize two kinds of optics enlargement ratios by spectroscope, the center pit that the reflected light of circuit board passes light source is divided into two-beam by spectroscope, and a branch of light enters camera lens 1, in camera 1 imaging, another Shu Guang enters camera lens 2, in camera 2 imagings.The optics enlargement ratio of camera lens 2 is twices of camera lens 1, get camera 1 image of clapping when checking the element more than 0402, check that 0201 this tiny element then gets the image that camera 2 is taken, the automatic visual inspection instrument just can be gathered two kinds of images that the optics enlargement ratio is different like this, the benefit of this scheme is that structure is fixed, but each light path light intensity loss half, the luminous intensity of light source is proposed higher requirement.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of pair of optics enlargement ratio image collecting device is provided, and its compact conformation, can realize two kinds of optics enlargement ratios and light source intensity loss is few.
The purpose of this utility model also is to provide the image acquisition control processing system that adopts above-mentioned pair of optics enlargement ratio image collecting device.
The purpose of this utility model is achieved through the following technical solutions: this pair optics enlargement ratio image collecting device, comprise principal phase machine and auxiliary camera, main lens that the optics enlargement ratio is different and attachment lens, first, second catoptron, a cylinder, a light source; Wherein:
Described principal phase machine and main lens are positioned at directly over the light source, light path alignment light source center pit; Auxiliary camera and attachment lens also are positioned at the top of light source, and are positioned at the next door of principal phase machine and main lens; The light path of auxiliary camera and attachment lens is aimed at first catoptron, and first catoptron is refracted to the light path of auxiliary camera and attachment lens and principal phase machine light path quadrature; Light source is positioned at the circuit board under test top, and the illumination that light source sends is mapped on the circuit board under test, and the reflected light of circuit board under test is by the upwards reflection of middle circular hole of light source; Second catoptron is contained in the light source top, is connected with air cylinder driven; Described cylinder is in when stretching out state, and second catoptron moves to top, light source center hole, and the reflected light of circuit board under test is refracted to first catoptron, is refracted to attachment lens again through first catoptron, in the auxiliary camera imaging; When described cylinder was in retracted state, second catoptron was removed from the center pit of light source, and main lens directly over the reflected light of circuit board under test incides is in the imaging of principal phase machine.
The moving direction of described second catoptron is parallel with reflecting surface, even the displacement of catoptron has error, also can not influence optical path length.
In the practicality, the optics enlargement ratio of described attachment lens is the twice of main lens, according to different image resolution ratio requirements, action by control cylinder, change the position of second catoptron, realize the switching of light path, so just constitute two light paths that the optics enlargement ratio is different.
Adopt the image acquisition control processing system of the image collecting device of above-mentioned pair of optics enlargement ratio, the image collecting device, locating device, control and the treating apparatus that comprise described pair of optics enlargement ratio, described control and treating apparatus comprise locating device controller, image pick-up card, shooting controller, image processing module, CPU, storer, the man-machine interface that communicates connection respectively by bus, wherein:
Described pair of optics enlargement ratio image collecting device is installed between the described locating device, and described locating device controller is connected with locating device; The light source of described pair of optics enlargement ratio image collecting device, principal phase machine, auxiliary camera are connected respectively with described shooting controller respectively, and described shooting controller is used to realize the image acquisition of the control of described light illumination and described principal phase machine, auxiliary camera; The principal phase machine of described pair of optics enlargement ratio image collecting device, the signal output part of auxiliary camera are connected respectively with described image pick-up card, and described image pick-up card is used for giving described CPU with the data image signal of camera collection and handles or preserve to described storer.
The utility model compared with prior art has following advantage and beneficial effect:
(1) this image collecting device has two light paths that the optics enlargement ratio is different, can select light path according to the size of PCB elements on circuit board, obtains the image of different resolution, has guaranteed the rapidity and the accuracy of automatic visual inspection instrument;
(2) by the catoptron switching-over light path, avoided the loss of reflective light intensity;
(3) utilize this image acquisition structure, can also be easily the somascope of original single optical resolution be upgraded to two optical resolution somascopes, need not to change light source;
(4) entire image harvester and image acquisition control and treatment compact conformation.
(5) the utility model can be used for the high-speed, high precision automatic visual inspection such as the surface mounting technology industry, can also be used for the image acquisition analysis of needs employing different resolution and device of handling or application such as piece surface detection.
Description of drawings
Fig. 1 is existing fixed resolution one camera image collecting device synoptic diagram;
Fig. 2 adopts spectroscopical double light path image collecting device synoptic diagram;
Fig. 3 is the front elevation of the two optics enlargement ratio image collecting devices of the utility model;
Fig. 4 is the vertical view of the two optics enlargement ratio image collecting devices of the utility model;
Fig. 5 is the image acquisition control processing system structured flowchart that adopts shown in Figure 4 pair of optics enlargement ratio image collecting device.
In Fig. 3～5: 1-principal phase machine; The 2-main lens; The 3-auxiliary camera; The 4-attachment lens; 5-second catoptron; 6-first catoptron; The 7-cylinder; The 8-light source; 9-PCB (circuit board); The 10-image collecting device; The 11-locating device; 12-control and treating apparatus.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
Shown in Fig. 3,4, this image collecting device comprises principal phase machine 1 and auxiliary camera 3, main lens 2 and attachment lens 4, second catoptron 5 and first catoptron 6, cylinder 7, light source 8.
As shown in Figure 5, adopt the image acquisition control processing system of this pair optics enlargement ratio image collecting device 10, the image collecting device that comprises described pair of optics enlargement ratio, locating device, control and treating apparatus, described control and treating apparatus comprise the locating device controller that communicates connection respectively by bus, image pick-up card, the shooting controller, image processing module, CPU, storer, man-machine interface, wherein: the controller of wherein making a video recording is connected with auxiliary camera 3 with light source 8 and principal phase machine 1 respectively, control the illumination and the control principal phase machine 1 of light source 8 respectively, the image acquisition of auxiliary camera 3.Image pick-up card is connected with the signal output of principal phase machine 1 and auxiliary camera 3, gives CPU with the data image signal of camera collection and handles or be saved in storer.The locating device controller is connected with locating device 11, image collecting device 10 is installed on the locating device 11, during images acquired, according to specified coordinate information, locating device 11 is delivered to assigned address with image collecting device 10, this pair of optics enlargement ratio image collecting device 10 is the switching-over light path images acquired as required, and image acquisition process is finished by procedure auto-control, and the image and the result of collection are kept in the storer.
This image collecting device has two light paths that the optics enlargement ratio is different, can select light path according to the size of PCB elements on circuit board to be measured, obtains the image of different resolution, has guaranteed the rapidity and the accuracy of automatic visual inspection instrument; By the catoptron switching-over light path, avoided the loss of reflective light intensity; Utilize this image acquisition structure, can also be easily the somascope of original single optical resolution be upgraded to two optical resolution somascopes, need not to change light source; Entire image harvester and image acquisition control processing system compact conformation.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.Though the utility model is narrated at the automatic visual inspection instrument that is applied to the circuit board assembling, but its usable range is not limited to automatic visual inspection, can also be used for the image acquisition analysis of needs employing different resolution and device of handling or application such as piece surface detection.
Claims (4)
1. two optics enlargement ratio image collecting devices is characterized in that: comprise principal phase machine and auxiliary camera, main lens that the optics enlargement ratio is different and attachment lens, first, second catoptron, a cylinder, a light source; Wherein:
Described principal phase machine and main lens are positioned at directly over the light source, light path alignment light source center pit; Auxiliary camera and attachment lens also are positioned at the top of light source, and are positioned at the next door of principal phase machine and main lens; The light path of auxiliary camera and attachment lens is aimed at first catoptron, and first catoptron is refracted to the light path of auxiliary camera and attachment lens and principal phase machine light path quadrature; Light source is positioned at the circuit board under test top, and the illumination that light source sends is mapped on the circuit board under test, and the reflected light of circuit board under test is by the upwards reflection of middle circular hole of light source; Second catoptron is contained in the light source top, is connected with air cylinder driven; Described cylinder is in when stretching out state, and second catoptron moves to top, light source center hole, and the reflected light of circuit board under test is refracted to first catoptron, is refracted to attachment lens again through first catoptron, in the auxiliary camera imaging; When described cylinder was in retracted state, second catoptron was removed from the center pit of light source, and main lens directly over the reflected light of circuit board under test incides is in the imaging of principal phase machine.
2. according to described pair of optics enlargement ratio of claim 1 image collecting device, it is characterized in that: the moving direction of second catoptron is parallel with reflecting surface.
3. according to described pair of optics enlargement ratio of claim 1 image collecting device, it is characterized in that: in the practicality, the optics enlargement ratio of described attachment lens is the twice of main lens.
4. adopt the image acquisition control processing system of the image collecting device of each described pair of optics enlargement ratio of claim 1-3, it is characterized in that: the image collecting device, locating device, control and the treating apparatus that comprise described pair of optics enlargement ratio, described control and treating apparatus comprise locating device controller, image pick-up card, shooting controller, image processing module, CPU, storer, the man-machine interface that communicates connection respectively by bus, wherein:
Described pair of optics enlargement ratio image collecting device is installed between the described locating device, and described locating device controller is connected with locating device; The light source of described pair of optics enlargement ratio image collecting device, principal phase machine, auxiliary camera are connected respectively with described shooting controller respectively, and described shooting controller is used to realize the image acquisition of the control of described light illumination and described principal phase machine, auxiliary camera; The principal phase machine of described pair of optics enlargement ratio image collecting device, the signal output part of auxiliary camera are connected respectively with described image pick-up card, and described image pick-up card is used for giving described CPU with the data image signal of camera collection and handles or preserve to described storer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205903045U CN201965383U (en) | 2010-10-29 | 2010-10-29 | Double optical magnification image collection device and image collection control and treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205903045U CN201965383U (en) | 2010-10-29 | 2010-10-29 | Double optical magnification image collection device and image collection control and treatment system |
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| CN201965383U true CN201965383U (en) | 2011-09-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095736A (en) * | 2010-10-29 | 2011-06-15 | 华南理工大学 | Dual-optical-magnification image acquisition device and image acquisition control and process system |
| CN103983572A (en) * | 2014-05-12 | 2014-08-13 | 杨征 | Optical detection and diagnostic device on basis of mobile equipment |
| CN106954013A (en) * | 2017-04-19 | 2017-07-14 | 中国科学技术大学 | A kind of compact high-resolution light-field camera of double light path imaging |
-
2010
- 2010-10-29 CN CN2010205903045U patent/CN201965383U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095736A (en) * | 2010-10-29 | 2011-06-15 | 华南理工大学 | Dual-optical-magnification image acquisition device and image acquisition control and process system |
| CN102095736B (en) * | 2010-10-29 | 2012-06-27 | 华南理工大学 | Dual-optical-magnification image acquisition device and image acquisition control and process system |
| CN103983572A (en) * | 2014-05-12 | 2014-08-13 | 杨征 | Optical detection and diagnostic device on basis of mobile equipment |
| CN103983572B (en) * | 2014-05-12 | 2017-02-15 | 杨征 | Optical detection and diagnostic device on basis of mobile equipment |
| CN106954013A (en) * | 2017-04-19 | 2017-07-14 | 中国科学技术大学 | A kind of compact high-resolution light-field camera of double light path imaging |
| CN106954013B (en) * | 2017-04-19 | 2023-06-20 | 中国科学技术大学 | Compact high-resolution light field camera with double-light-path imaging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20120627 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20120627 |