CN210348083U - Image acquisition device and image generation equipment - Google Patents
Image acquisition device and image generation equipment Download PDFInfo
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- CN210348083U CN210348083U CN201920884660.9U CN201920884660U CN210348083U CN 210348083 U CN210348083 U CN 210348083U CN 201920884660 U CN201920884660 U CN 201920884660U CN 210348083 U CN210348083 U CN 210348083U
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Abstract
The utility model provides an image acquisition device, it includes the light source, image acquisition device still includes: the double telecentric lens is arranged opposite to the light source and forms a plurality of parallel main light paths; the light splitting device is used for splitting each main light path into at least two light splitting light paths; the sensor array comprises a plurality of image sensors arranged in an array, at least two light splitting optical paths respectively correspond to different image sensors, and the image sensors are used for performing photoelectric conversion and outputting images. The image acquisition device is simple in structure, high in pixel and good in anti-vibration effect. The utility model discloses provide an image generation equipment including above-mentioned image acquisition device simultaneously.
Description
Technical Field
The utility model relates to a visual detection technical field, in particular to image acquisition device reaches image generation equipment including this image acquisition device.
Background
In the production process of the mobile phone, an industrial camera is usually required to take a picture of the mobile phone and detect the mobile phone by using a visual detection technology.
For a 90 x 180mm size workpiece, a camera with a pixel size of up to 6.5 billion is required if the physical resolution accuracy of the image is required to be 0.005 mm/pix. However, the current commercially available large pixel camera is 7200 ten thousand pixels, and the corresponding field of view is 50 × 35.5mm, so the complete image of the workpiece cannot be captured at one time by using the camera, and the large field of view of 90 × 180mm needs to be divided into 5 rows and 2 columns to be 10 small fields for photographing detection and calibration stitching.
At present, the following methods are commonly used. One is to acquire images area by area with a single camera moving in the XY axis, so the camera needs to move in 10 small view areas; and the other is to drive the workpiece to do single-axis pulse production line type motion, and a plurality of cameras distributed in a staggered mode are adopted to acquire images in a time-sharing and partition mode. However, the above methods require complicated driving mechanisms, and have complicated structure, high cost, long time and no vibration resistance.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide an image capturing device and an image generating apparatus with high pixel and vibration resistance to solve the above problem.
The utility model provides an image acquisition device, it includes the light source, image acquisition device still includes: the double telecentric lens is arranged opposite to the light source and forms a plurality of parallel main light paths; the light splitting device is used for splitting each main light path into at least two light splitting light paths, and comprises a first light splitting mechanism and a second light splitting mechanism, wherein the first light splitting mechanism comprises a first light splitting mirror and a first reflector group, the first light splitting mirror and the light emitting surface of the double telecentric lens are obliquely arranged, the second light splitting mechanism comprises a first reflector and a second reflector group, the first reflector is perpendicular to the first light splitting mirror, light of the main light path is reflected to the first reflector group and transmitted to the first reflector group through the first light splitting mirror, and then is reflected through the first reflector group and the second reflector group to form the two light splitting light paths respectively; the sensor array comprises a plurality of image sensors arranged in an array, each light splitting optical path corresponds to a different image sensor, and the image sensors are used for performing photoelectric conversion and outputting images.
Further, the first beam splitting mechanism further comprises a second beam splitter parallel to the first beam splitter, the second beam splitter is located at the reflected light output of the first beam splitter, the second beam splitting mechanism further comprises a third beam splitter parallel to the first reflector, and the third beam splitter is located at the reflected light output of the first reflector; the light splitting device further comprises a second reflecting mirror parallel to the second beam splitter and a third reflecting mirror parallel to the third beam splitter, wherein the second reflecting mirror is positioned at the transmitted light-emitting position of the second beam splitter and is used for reflecting the light rays transmitted by the second beam splitter to form a light splitting path; the third reflector is located at the transmission light-emitting position of the third beam splitter and used for reflecting the light rays transmitted by the third beam splitter to form another beam splitting light path.
Further, the first reflecting mirror group comprises two parallel fourth reflecting mirrors and two parallel fifth reflecting mirrors which are arranged along the light splitting path, the two fourth reflecting mirrors are respectively adjacent to and parallel to the first light splitting mirror and the third light splitting mirror, and one of the fourth reflecting mirrors is located at the reflected light emergent position of the second light splitting mirror; the two fifth reflectors are respectively perpendicular to the two fourth reflectors.
Further, the second reflecting mirror group comprises two parallel sixth reflecting mirrors and two parallel seventh reflecting mirrors which are arranged along the light splitting path, the two sixth reflecting mirrors are respectively adjacent to and parallel to the first reflecting mirror and the second light splitting mirror, and one of the sixth reflecting mirrors is located at the reflected light emergent position of the third light splitting mirror; the two seventh reflecting mirrors are respectively perpendicular to the two sixth reflecting mirrors.
Furthermore, the light splitting device divides the main light path into four light splitting light paths, the sensor array comprises a plurality of sensor units, each sensor unit comprises four image sensors, and the four image sensors are arranged in two rows and two columns.
Furthermore, the sensor array is arranged on four circuit boards, the sensor array comprises 160 image sensors, and 40 image sensors are arranged on each circuit board.
Furthermore, the sensor array is arranged on four circuit boards, the sensor array comprises 24 image sensors, and each circuit board is provided with 6 image sensors.
Furthermore, an included angle between the first spectroscope and the light emergent surface of the double telecentric lens is 45 degrees.
Further, the light source is a dome-shaped programmable light source, and the depth of field of the double telecentric lens is 8 mm.
The utility model discloses provide an image generation equipment simultaneously, including above-mentioned image acquisition device to and image processing device, image processing device with sensor array is connected, is used for receiving and concatenation a plurality of sensor array output image to the image that detects the product is detected in the generation.
The image acquisition device comprises a light source, a double telecentric lens, a light splitting device and a sensor array, wherein the light splitting device divides each main light path into at least two light splitting light paths, and the at least two light splitting light paths correspond to different image sensors respectively, so that images acquired by the sensor array can be spliced into complete product images, and only an object to be detected needs to be shot once, so that the complete image of the object to be detected can be acquired. The image acquisition device is simple in structure, low in cost and high in pixel, overcomes field vibration and audio resonance, and is good in anti-vibration effect. When the image generation equipment comprising the image acquisition device is used for product detection, the efficiency of image acquisition and visual detection is improved.
Drawings
Fig. 1 is a block diagram of an image generating apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an image capturing device according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a sensor array in the image acquisition apparatus shown in fig. 2.
Fig. 4 is a schematic diagram of a sensor array according to another embodiment of the present invention.
Description of the main elements
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The utility model provides an image generation equipment for the image of formation determinand, with through the image detects the product. In this embodiment, the object may be a mobile phone, and the maximum size of the object may be 90 × 180 mm. It is understood that the object to be tested can be other electronic devices or components.
Referring to fig. 1, the image generating apparatus 1 includes an image capturing device 100 and an image processing device 200 in signal connection with the image capturing device 100. The image capturing device 100 is used for capturing an image of a product, and the image processing device 200 is used for processing the image captured by the image capturing device 100.
Referring to fig. 2 and fig. 3, the image capturing device 100 includes a light source 10, a double telecentric lens 20, a light splitting device 30, and a sensor array 40. The light source 10 is arranged opposite to the object 2 to be measured, and the double telecentric lens 20 is arranged opposite to the light source 10 and is used for forming a plurality of parallel main light paths 300. The light splitting device 30 is disposed on a side of the double telecentric lens 20 away from the light source 10, and is configured to split each of the main light paths 300 into at least two light splitting light paths 400 with equal optical lengths. The sensor array 40 includes a plurality of sensor units 41, each sensor unit 41 includes at least two image sensors 411, at least two light splitting optical paths 400 split by each main optical path 300 correspond to different image sensors 411 respectively, and the image sensors 411 are used for performing photoelectric conversion and outputting images.
In an embodiment, the light splitting device 30 splits the main light path 300 into four light splitting light paths 400, each sensor unit 41 includes four image sensors 411, and the four light splitting light paths 400 correspond to different image sensors 411 respectively.
The number of the split optical paths 400 split from each main optical path 300 may be 2nWherein n is more than or equal to 1. For example, the split optical path 400 may be 8, 16, or the like.
In an embodiment, the light source 10 is a dome-shaped programmable light source 10. Preferably, the light source 10 is a dome-shaped color matrix synchronous triggered burst light source 10, and the light source 10 can be programmed to adjust the lighting angle, brightness, color, orientation, area, width, etc.
The depth of field of the double telecentric lens 20 can be 8mm, and the double telecentric lens 20 can overcome image distortion errors caused by the distance from an object side to a near side.
In one embodiment, the spectroscopic apparatus 30 includes a first spectroscopic mechanism 31 and a second spectroscopic mechanism 32 disposed adjacent to the first spectroscopic mechanism 31.
The first light splitting mechanism 31 includes a first light splitting mirror 311 and a first reflector group 312, and the first light splitting mirror 311 is disposed to be inclined with respect to the light exit surface of the double telecentric lens 20, that is, the first light splitting mirror 311 is disposed to be inclined with respect to the horizontal direction X. Preferably, an angle between the first beam splitter 311 and the light exit surface of the double telecentric lens 20 is preferably 45 degrees.
The second beam splitting mechanism 32 includes a first reflector 321 and a second reflector 322, the first reflector 321 is perpendicular to the first splitter 311, the light of the main light path 300 is reflected to the first reflector 312 and transmitted to the first reflector 321 through the first splitter 311, and then reflected through the first reflector 312 and the second reflector 322 to form two light splitting light paths 400.
In one embodiment, the first beam splitting mechanism 31 further comprises a second beam splitter 313 parallel to the first beam splitter 311, the second beam splitter 313 being located at the reflected light output of the first beam splitter 311, the second beam splitting mechanism 32 further comprises a third beam splitter 323 parallel to the first mirror 321, the third beam splitter 323 being located at the reflected light output of the first mirror 321; the light splitting device 30 further comprises a second reflecting mirror 33 parallel to the second beam splitter 313, and a third reflecting mirror 34 parallel to the third beam splitter 323, wherein the second reflecting mirror 33 is located at the light transmitting position of the second beam splitter 313 and is used for reflecting the light transmitted by the second beam splitter 313 to form a light splitting optical path 400; the third reflecting mirror 34 is located at the light outgoing position of the third beam splitter 323, and is used for reflecting the light outgoing from the third beam splitter 323 to form another beam splitting optical path 400. Therefore, the first beam splitting mechanism 31, the second beam splitting mechanism 32, the second reflecting mirror 33, and the third reflecting mirror 34 can form one beam splitting optical path 400, respectively, and guide the beam splitting optical path 400 to the corresponding image sensor 411.
Specifically, the first mirror group 312 is substantially V-shaped, and includes two parallel fourth mirrors 3121 and two parallel fifth mirrors 3122 arranged along the light splitting path 400, the two fourth mirrors 3121 are respectively adjacent to and arranged in parallel with the first light splitting mirror 311 and the third light splitting mirror 313, and one of the fourth mirrors 3121 is located at the reflected light exit position of the second light splitting mirror 313; the two fifth mirrors 3122 are perpendicular to the two fourth mirrors 3121, respectively. The light reflected by the first beam splitter 311 is reflected by the second beam splitter 313, the two fourth mirrors 3121, and the two fifth mirrors 3122 in sequence, and reaches the corresponding image sensor 411.
The second mirror group 322 is substantially V-shaped, and includes two parallel sixth mirrors 3321 and two parallel seventh mirrors 3222 arranged along the light splitting path 400, the two sixth mirrors 3221 are respectively adjacent to and parallel to the first mirror 321 and the second light splitting mirror 323, and one of the sixth mirrors 3221 is located at the position where the reflected light of the third light splitting mirror 323 exits; the two seventh mirrors 3222 are perpendicular to the two sixth mirrors 3221, respectively. The light transmitted by the first beam splitter 311 is reflected by the first reflector 321, the third beam splitter 323, the two sixth reflectors 3221 and the two seventh reflectors 3222 in sequence, and reaches the corresponding image sensor 411.
Referring to fig. 3, the sensor array 40 includes a plurality of sensor units 41, each sensor unit 41 includes four image sensors 411, and the four image sensors 411 are arranged in two rows and two columns. Thus, a plurality of sensor units 41 form a matrix array.
In one embodiment, the sensor array 40 is provided on four circuit boards, and the sensor array 40 has a total of 160 image sensors 411 with 500 million pixels exposed globally, and each circuit board has 40 image sensors 411 provided thereon.
Referring to fig. 4, in another embodiment, the sensor array 40 is disposed on four circuit boards, and the sensor array 40 has 24 image sensors 411 with 2900 pmono pixels exposed globally. Each circuit board is provided with 6 image sensors 411.
Referring to fig. 1 and fig. 2 again, the image processing apparatus 200 is connected to the sensor array 40, and is configured to receive the plurality of images sent by the sensor array 40 and splice the plurality of images to generate an overall image of the object 2.
When the double telecentric lens system is used, the double telecentric lens 20 forms light emitted by the light source 10 into a plurality of parallel main light paths 300, the light splitting device 30 divides each main light path 300 into at least two light splitting light paths 400, the at least two light splitting light paths correspond to different image sensors 411 respectively, the image sensors 411 perform photoelectric conversion and output images, and the image processing device 200 splices the images output by the plurality of image sensors 411 to form a complete image of an object to be detected.
The images collected by the sensor array 40 can be spliced into a complete product image, the image collecting device 100 can obtain a complete image of the object to be detected only by shooting the object to be detected once, and hundreds of detection items, such as contour size, position degree, appearance and the like, can be detected in a second level. The visual field of the image acquisition device 100 can reach 90 x 180mm, the physical resolution precision reaches 5um/pix, and the pixel height reaches 6.5 hundred million. The image acquisition device 100 can be integrally packaged, and has the advantages of simple structure, small volume, low cost and high pixel. In addition, the image acquisition device 100 can realize 10 microsecond global exposure, overcome field vibration and audio resonance, and is beneficial to improving the precision of visual detection.
Compared with the prior art, when the product is detected, the product or the image generation equipment 1 does not need to be moved to take pictures in a subarea manner, so that the time is saved, and the image acquisition and visual detection efficiency is improved.
It is understood that in other embodiments, the light source 10 may be other existing light sources 10, and is not limited to a programmable light source.
It is understood that in other embodiments, the reflecting mirror and the beam splitter in the beam splitting device 30 can be appropriately changed to split the main light path 300 into at least one split light path 400. For example, the second beam splitting mechanism 32 and the second reflecting mirror 34 may be eliminated, and the main light path 300 is split into two beam splitting paths 400.
It is understood that in other embodiments, the number of image sensors 411 in the sensor array 40 may vary.
While the preferred embodiments of the invention have been illustrated and described, it will be appreciated by those skilled in the art that various changes and modifications may be made without departing from the true scope of the invention. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An image capture device comprising a light source, the image capture device further comprising:
the double telecentric lens is arranged opposite to the light source and forms a plurality of parallel main light paths;
the light splitting device is used for splitting each main light path into at least two light splitting light paths, and comprises a first light splitting mechanism and a second light splitting mechanism, wherein the first light splitting mechanism comprises a first light splitting mirror and a first reflector group, the first light splitting mirror and the light emitting surface of the double telecentric lens are obliquely arranged, the second light splitting mechanism comprises a first reflector and a second reflector group, the first reflector is perpendicular to the first light splitting mirror, light of the main light path is reflected to the first reflector group and transmitted to the first reflector group through the first light splitting mirror, and then is reflected through the first reflector group and the second reflector group to form the two light splitting light paths respectively;
the sensor array comprises a plurality of image sensors arranged in an array, each light splitting optical path corresponds to a different image sensor, and the image sensors are used for performing photoelectric conversion and outputting images.
2. The image capture device of claim 1, wherein the first beam splitting mechanism further comprises a second beam splitter parallel to the first beam splitter, the second beam splitter being positioned at the reflected light output of the first beam splitter, the second beam splitting mechanism further comprising a third beam splitter parallel to the first beam splitter, the third beam splitter being positioned at the reflected light output of the first beam splitter; the light splitting device further comprises a second reflecting mirror parallel to the second beam splitter and a third reflecting mirror parallel to the third beam splitter, wherein the second reflecting mirror is positioned at the transmitted light-emitting position of the second beam splitter and is used for reflecting the light rays transmitted by the second beam splitter to form a light splitting path; the third reflector is located at the transmission light-emitting position of the third beam splitter and used for reflecting the light rays transmitted by the third beam splitter to form another beam splitting light path.
3. The image capturing device as claimed in claim 2, wherein the first reflecting mirror group includes two parallel fourth reflecting mirrors and two parallel fifth reflecting mirrors disposed along the beam splitting optical path, the two fourth reflecting mirrors are respectively disposed adjacent to and parallel to the first beam splitter and the third beam splitter, and one of the fourth reflecting mirrors is located at the reflected light exit of the second beam splitter; the two fifth reflectors are respectively perpendicular to the two fourth reflectors.
4. The image acquisition device according to claim 2, wherein the second mirror group comprises two parallel sixth mirrors and two parallel seventh mirrors arranged along the beam splitting optical path, the two sixth mirrors are respectively arranged adjacent to and parallel to the first mirror and the second beam splitter, and one of the sixth mirrors is located at a reflected light emergent position of the third beam splitter; the two seventh reflecting mirrors are respectively perpendicular to the two sixth reflecting mirrors.
5. The image capturing apparatus according to claim 2, wherein the light splitting means splits the main light path into four light splitting light paths, the sensor array includes a plurality of sensor units, each of the sensor units includes four of the image sensors, and the four image sensors are arranged in two rows and two columns.
6. The image capturing device of claim 5, wherein the sensor array is disposed on four circuit boards, the sensor array including 160 of the image sensors, and 40 of the image sensors being disposed on each of the circuit boards.
7. The image capturing device of claim 5, wherein the sensor array is disposed on four circuit boards, the sensor array including 24 of the image sensors, each of the circuit boards having 6 of the image sensors disposed thereon.
8. The image capturing device as claimed in claim 1, wherein an angle between the first beam splitter and the light exit surface of the double telecentric lens is 45 degrees.
9. The image capturing device of claim 1, wherein the light source is a dome-shaped programmable light source and the double telecentric lens has a depth of field of 8 mm.
10. An image generating device, comprising an image capturing device according to any one of claims 1 to 9, and an image processing device, connected to the sensor array, for receiving and stitching a plurality of images output by the sensor array to generate an image of a product to be detected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920884660.9U CN210348083U (en) | 2019-06-12 | 2019-06-12 | Image acquisition device and image generation equipment |
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| CN201920884660.9U CN210348083U (en) | 2019-06-12 | 2019-06-12 | Image acquisition device and image generation equipment |
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| CN210348083U true CN210348083U (en) | 2020-04-17 |
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| CN201920884660.9U Active CN210348083U (en) | 2019-06-12 | 2019-06-12 | Image acquisition device and image generation equipment |
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Address after: 518109 Foxconn H5 plant 101, No. 2, Donghuan 2nd Road, Fukang community, Longhua street, Longhua District, Shenzhen, Guangdong Province; plant 5, building C09, 4th floor, building C07, 2nd floor, building C08, 3rd floor, 4th floor, building C04, zone B, Foxconn Hongguan science and Technology Park, Fucheng Dasan community, Guanlan street, Guangdong Province Patentee after: Fulian Yuzhan Technology (Shenzhen) Co.,Ltd. Address before: 518109 Guangzhou Guanlan Foxconn Hongguan Science Park B workshop 5 C09 buildings 4 floors, C07 buildings 2 floors, C08 buildings 3 floors 4 floors, C04 buildings 1 floors Patentee before: SHENZHENSHI YUZHAN PRECISION TECHNOLOGY Co.,Ltd. |
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