CN211528226U - Screen appearance defect on-line measuring device - Google Patents
Screen appearance defect on-line measuring device Download PDFInfo
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- CN211528226U CN211528226U CN201921395264.6U CN201921395264U CN211528226U CN 211528226 U CN211528226 U CN 211528226U CN 201921395264 U CN201921395264 U CN 201921395264U CN 211528226 U CN211528226 U CN 211528226U
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Abstract
The utility model provides a screen appearance defect on-line measuring device, includes camera, camera lens, line source, speculum group, fourth speculum and integrative support, and speculum group includes first speculum, second speculum, third speculum, and first speculum, second speculum and third speculum concatenation are in the same place, and second speculum central point is directly over the sample, and fourth speculum level is placed on the base, is in same horizontal plane with the sample. The light of the line light source is incident to the surface of the sample, one group of reflected light is incident to the fourth reflector after being reflected by the reflector group and then enters the lens and the camera in a reflected mode, the image collected by the camera is a picture with three pictures, and the three pictures respectively correspond to the sample images with different angles obtained by the first reflector, the second reflector and the third reflector. The utility model discloses the device can be used to machine vision's on-line measuring, combines current image processing technique, realizes the defect on-line measuring to the screen outward appearance.
Description
Technical Field
The utility model relates to an industrial detection technical field relates to machine vision and uses at the technical of screen inspection, is a screen appearance defect on-line measuring device.
Technical Field
The liquid crystal display screen is complex in composition, a lot of display area defects can be generated in the production process of the liquid crystal display screen, manufacturers pay particular attention to the defects, in fact, the defects not only exist in the display area, but also exist in a large number of defects on the screen, the defects are easy to be perceived by consumers, the quality of the whole product and the acceptance of the consumers are affected, and therefore, the screen appearance detection is very necessary after the final step of glass cover plate laminating of the product is completed.
The defects of the screen mainly comprise defects of scratches, uneven printing ink, edge breakage, dirt, paint falling and the like. At present, manual detection is mainly used on the production line, but the manual detection easily generates visual fatigue, so that excessive missed detection is caused, the stable and accurate detection effect is difficult to maintain, and the labor cost is high. And the introduction of machine vision can greatly improve the detection efficiency and reduce the omission factor and labor cost.
Disclosure of Invention
The utility model aims to provide a screen appearance defect on-line measuring device to solve current artifical detection efficiency low, the problem that the rate of missing examining is high.
The scheme of the utility model is that: an on-line detection device for screen appearance defects comprises a camera, a lens, a line light source, a reflector group, a fourth reflector and an integrated support, wherein the lens is connected with the camera, the reflector group comprises a first reflector, a second reflector and a third reflector, the first reflector, the second reflector and the third reflector face a sample to be detected, the first reflector, the second reflector and the third reflector are arranged on the integrated support after splicing, the central point of the second reflector is positioned right above the sample to be detected, and the fourth reflector is horizontally arranged and is positioned on the same horizontal plane with the sample to be detected; the position of each reflector is constrained by an optical structure, the linear light source is used for emitting light to project on the surface of a sample to be measured, and the generated reflected light is reflected by the first reflector, the second reflector and the third reflector respectively, then enters the fourth reflector and then is reflected into the lens.
As a preferred mode, the included angle between the principal ray of the line light source and the plane of the sample to be measured is 30-45 degrees, the included angle between the first reflector and the horizontal plane is 0 degree, the included angle between the second reflector and the horizontal plane is 10 degrees, the included angle between the third reflector and the horizontal plane is 20 degrees, and the included angle between the camera and the perpendicular bisector is 20 degrees.
Preferably, the camera is a high-resolution black and white camera, and the resolution is higher than 900 ten thousand.
Preferably, the lens is a lens with a resolution corresponding to that of the camera, and the focal length of the lens is 25-35 mm.
Preferably, the line light source is a white line LED light source having a power of 20W to 30W.
Preferably, the first mirror, the second mirror and the third mirror are joined together seamlessly.
Preferably, the first reflecting mirror, the second reflecting mirror, the third reflecting mirror, and the fourth reflecting mirror are optical flat mirrors.
The utility model discloses following beneficial effect has:
(1) the utility model discloses a screen appearance defect on-line measuring device, cooperation through high resolution camera and hi-lite light source realizes screen appearance defect's on-line measuring.
(2) The utility model discloses a screen appearance defect on-line measuring device adopts the reflector group can gather a picture at the same time and realize the sample image acquisition under the different angles, and the reduction that the defect that could observe under the different angles can be very big leaks to examine the risk.
(3) The utility model discloses a screen appearance defect on-line measuring device adopts the fourth speculum, can carry out the transposition with the image coordinate system, convenient debugging, and be favorable to dwindling the device volume.
(4) The utility model discloses a screen appearance defect on-line measuring device can detect the face of screen outward appearance through the line light source, realizes with low costs, easily sets up.
Drawings
FIG. 1 is a schematic diagram of the optical path of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
The reference numerals in the figures have the meaning:
1. a camera; 2. a lens; 3. a fourth mirror; 4. a reflector group; 4-1, a first reflector; 4-2, a second reflector; 4-3, a third reflector; 5. a line light source; 6. a sample to be tested; 7. an integral bracket; 8. a base.
Detailed Description
The utility model provides an in the screen appearance defect detects, how to carry detection efficiency, reduce the problem of lou examining the rate.
As shown in fig. 2, for the utility model discloses an embodiment, including camera 1, camera lens 2, line source 5, the speculum group 4, fourth speculum 3 and integrative support 7, speculum group 4 includes first speculum 4-1, second speculum 4-2 and third speculum 4-3, first speculum 4-1, second speculum 4-2 and third speculum 4-3 all face to the sample 6 that awaits measuring, set up on integrative support 7 after the concatenation, and second speculum 4-2 central point is directly over the sample 6, and the level setting of fourth speculum 3 can set up on a base 8, guarantees to be located same horizontal plane with the sample 6 that awaits measuring. As shown in fig. 1, light of a linear light source 5 is incident on the surface of a sample 6, reflected light is reflected by a first reflector 4-1, a second reflector 4-2 and a third reflector 4-3 and then reflected by a fourth reflector 3 again to enter a lens 2 and a camera 1, an image collected by the camera 1 is a three-picture image, and the three-picture image respectively corresponds to sample images with different angles obtained by the first reflector 4-1, the second reflector 4-2 and the third reflector 4-3.
Fig. 1 provides a preferred light path structure implementation of the utility model, the line source chief ray is 30 ~ 45 with the planar contained angle of the sample that awaits measuring, and the contained angle of first speculum and horizontal plane is 0, and the contained angle of second speculum and horizontal plane is 10, and the contained angle of third speculum and horizontal plane is 20, the camera is 20 with the contained angle of plumb line.
In a preferred embodiment of the present invention, the camera 1 is a high-resolution black-and-white camera, the resolution of the camera 1 is higher than 900 ten thousand, and preferably, the resolution of the camera in this embodiment is 1200 ten thousand.
Preferably, the lens 2 has a resolution corresponding to that of the camera 1, and the focal length of the lens 2 is preferably 25 to 35 mm.
Preferably, the linear light source 5 is a high-brightness LED linear light source, and preferably a white linear LED light source with power of 20W to 30W.
Preferably, the first mirror 4-1, the second mirror 4-2 and the third mirror 4-3 are seamlessly connected in the middle during splicing.
Preferably, the first reflector 4-1, the second reflector 4-2, the third reflector 4-3 and the fourth reflector 3 are optical plane mirrors to eliminate mirror ghosts.
The utility model discloses simple structure, degree of automation are high, realize with low costs, and the facilitate promotion is used.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (7)
1. An on-line detection device for screen appearance defects is characterized by comprising a camera (1), a lens (2), a line light source (5), a reflector group (4), a fourth reflector (3) and an integrated support (7), wherein the lens (2) is connected with the camera (1), the reflector group (4) comprises a first reflector (4-1), a second reflector (4-2) and a third reflector (4-3), the first reflector (4-1), the second reflector (4-2) and the third reflector (4-3) face a sample (6) to be detected, the reflectors are arranged on the integrated support (7) after being spliced, the central point of the second reflector (4-2) is positioned right above the sample (6) to be detected, and the fourth reflector (3) is horizontally arranged and is positioned on the same horizontal plane with the sample (6) to be detected; the positions of the reflectors are constrained by the following optical structures, the linear light source (5) is used for emitting light to project on the surface of a sample (6) to be measured, and the generated reflected light is reflected by the first reflector (4-1), the second reflector (4-2) and the third reflector (4-3) respectively, then enters the fourth reflector (3) and then is reflected into the lens (2).
2. The on-line detection device for the appearance defects of the screen as claimed in claim 1, wherein the included angle between the principal ray of the line light source (5) and the plane of the sample (6) to be detected is 30-45 degrees, the included angle between the first reflector (4-1) and the horizontal plane is 0 degree, the included angle between the second reflector (4-2) and the horizontal plane is 10 degrees, the included angle between the third reflector (4-3) and the horizontal plane is 20 degrees, and the included angle between the camera (1) and the perpendicular bisector is 20 degrees.
3. The on-line detection device for the screen appearance defects according to claim 1 or 2, wherein the camera (1) is a high-resolution black and white camera, and the resolution is higher than 900 ten thousand.
4. The on-line detection device for the screen appearance defects according to claim 1 or 2, wherein the lens (2) has a resolution corresponding to that of the camera (1), and the focal length of the lens (2) is 25-35 mm.
5. The on-line screen appearance defect detection device according to claim 1 or 2, wherein the line light source (5) is a white line LED light source with power of 20W-30W.
6. The on-line detection device for the screen appearance defects according to claim 1 or 2, wherein the first reflector (4-1), the second reflector (4-2) and the third reflector (4-3) are spliced into a seamless connection.
7. The on-line detection device for the screen appearance defects according to claim 1 or 2, wherein the first reflector (4-1), the second reflector (4-2), the third reflector (4-3) and the fourth reflector (3) are optical plane mirrors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921395264.6U CN211528226U (en) | 2019-08-26 | 2019-08-26 | Screen appearance defect on-line measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921395264.6U CN211528226U (en) | 2019-08-26 | 2019-08-26 | Screen appearance defect on-line measuring device |
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| Publication Number | Publication Date |
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| CN211528226U true CN211528226U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921395264.6U Active CN211528226U (en) | 2019-08-26 | 2019-08-26 | Screen appearance defect on-line measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255754A (en) * | 2020-10-16 | 2021-01-22 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Optical lens aligning mechanism |
-
2019
- 2019-08-26 CN CN201921395264.6U patent/CN211528226U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255754A (en) * | 2020-10-16 | 2021-01-22 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Optical lens aligning mechanism |
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