CN214174193U - Display screen crack detection imaging device - Google Patents
Display screen crack detection imaging device Download PDFInfo
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- CN214174193U CN214174193U CN202023331499.4U CN202023331499U CN214174193U CN 214174193 U CN214174193 U CN 214174193U CN 202023331499 U CN202023331499 U CN 202023331499U CN 214174193 U CN214174193 U CN 214174193U
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Abstract
The application provides a display screen crack detection imaging device includes: the camera comprises a camera, a lens fixedly connected with the camera, an illumination light source arranged on the light inlet side of the lens, and an annular light source arranged between the lens and the display screen. The center of the annular light source and the lens are on the same axis, the annular light source comprises a plurality of uniformly arranged partitions, and light rays of the partitions vertically irradiate on cracks of the display screen. The lens is opposite to the display screen and receives the light rays of the illumination light source and the annular light source reflected by the display screen. In the technical scheme of this application, annular light source's subregion can independently bright go out, launches not equidirectional light for the different crackle homoenergetic of extending direction can obtain vertical irradiation's light, realizes clear formation of image. Therefore, when the device is used for detecting cracks of the display screen, the cracks in different extending directions can be obviously imaged, and the crack detection rate is high.
Description
Technical Field
The application relates to a display screen detection field especially relates to a display screen crack detection imaging device.
Background
Some displays are susceptible to cracking during the manufacturing process. For example, when an OLED (organic light-Emitting Diode) display is cut by laser, cracks are very likely to occur at positions such as arc edges, circular holes, and R corners. The OLED display screen with the crack defect is easily oxidized by moisture and air, and the OLED display screen gradually loses efficacy along with the oxidation. Therefore, the crack defect has a great influence on the service life of the display screen.
The conventional crack detection method is: the method comprises the steps that a camera is used for shooting a display screen, a light source is arranged on the light inlet side of the camera, light of the light source vertically irradiates the display screen, the brightness of the display screen is improved, and the defect condition of the display screen is obtained by analyzing an image shot by the camera.
However, since the cracks have directionality, that is, the extending directions of different cracks are different, the light source on the light incoming side of the camera only emits light perpendicular to the display screen direction, and the directionality is lacked in the illumination direction, many cracks cannot be effectively imaged in the crack detection process, and the crack detection rate is low.
SUMMERY OF THE UTILITY MODEL
The application provides a display screen crack detection imaging device to the problem that the crackle can not effectively form images when solving present crack detection.
The application provides a display screen crack detection imaging device includes: the device comprises a camera, a lens fixedly connected with the camera, an illumination light source arranged on the light inlet side of the lens, and an annular light source arranged between the lens and a display screen;
the center of the annular light source and the lens are on the same axis, the annular light source comprises a plurality of uniformly arranged subareas, and light rays of the subareas vertically irradiate on cracks of the display screen; the lens is opposite to the display screen and receives the light rays of the illumination light source and the annular light source reflected by the display screen.
Optionally, the annular light source is of an annular structure, the plurality of sub-regions are concentrically arranged, and the cross section of each sub-region is in the shape of a concentric circular arc; the inner side of each subarea is provided with a luminous light source, and the subareas are independently turned on and off.
Optionally, the light-emitting source is a plurality of LED light beads, and the LED light beads are arranged side by side; and the light rays of the LED light beads are obliquely irradiated on the display screen.
Optionally, the annular light sources are multiple, centers of the multiple annular light sources and the lens are located on the same axis, and the multiple annular light sources are independently turned on and off.
Optionally, the illumination light source is a coaxial light source, the coaxial light source is provided with a semi-transparent semi-reflecting mirror, light emitted by the coaxial light source is reflected to the display screen through the semi-transparent semi-reflecting mirror, and the lens receives the light penetrating through the semi-transparent semi-reflecting mirror.
Optionally, the light emitting end of the coaxial light source is a point light source or a surface light source.
Optionally, the camera is an area-array camera, and the magnification of the area-array camera is 5 times, 10 times or 15 times.
Optionally, the annular light source is of an annular structure, the plurality of sub-regions are concentrically arranged, and the cross section of each sub-region is in the shape of a concentric circular arc; the inner sides of the subareas are provided with light-emitting light sources, and a plurality of subareas are independently turned on and off;
the light-emitting light source is a plurality of LED light beads which are arranged side by side; the light rays of the LED light beads are obliquely irradiated on the display screen;
the centers of the plurality of annular light sources and the lens are positioned on the same axis, and the plurality of annular light sources are independently turned on and off;
the lighting source is a coaxial light source which is provided with a semi-transparent semi-reflecting mirror, light rays emitted by the coaxial light source are reflected to a display screen through the semi-transparent semi-reflecting mirror, and the lens receives the light rays penetrating through the semi-transparent semi-reflecting mirror;
the light emitting end of the coaxial light source is a point light source or a surface light source;
the camera is an area-array camera, and the magnification of the area-array camera is 5 times, 10 times or 15 times.
According to the above technical solution, the present application provides a display screen crack detection imaging device, including: the camera comprises a camera, a lens fixedly connected with the camera, an illumination light source arranged on the light inlet side of the lens, and an annular light source arranged between the lens and the display screen. The center of the annular light source and the lens are on the same axis, the annular light source comprises a plurality of uniformly arranged partitions, and light rays of the partitions vertically irradiate on cracks of the display screen. The lens is opposite to the display screen and receives the light rays of the illumination light source and the annular light source reflected by the display screen. In the technical scheme of this application, annular light source's subregion can independently bright go out, launches not equidirectional light for the different crackle homoenergetic of extending direction can obtain vertical irradiation's light, realizes clear formation of image. Therefore, when the device is used for detecting cracks of the display screen, the cracks in different extending directions can be obviously imaged, and the crack detection rate is high.
Drawings
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Fig. 1 is a schematic structural diagram of a display screen crack detection imaging device according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view of a partition provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of another display screen crack detection imaging device provided in the embodiment of the present application.
Description of the drawings: 1. camera, 2, lens, 3, illumination light source, 31, half mirror, 4, annular light source, 41, subregion, 5, display screen.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Crack detection of the display screen is an essential step in the quality detection process of the display screen. Because the display screen has certain thickness, when the crack is formed, the extending direction of the crack may include both the horizontal direction and the vertical direction, when the illuminating direction of the light is parallel to the plane of the crack, the crack is imaged weakly or even not, and when the illuminating direction of the light is perpendicular to the plane of the crack, the imaging effect of the crack is better.
Referring to fig. 1, a structural schematic diagram of a display screen crack detection imaging device provided in an embodiment of the present application is shown. As can be seen from fig. 1, the display screen crack detection imaging apparatus provided in the present application specifically includes: the device comprises a camera 1, a lens 2 fixedly connected with the camera 1, an illumination light source 3 arranged on the light inlet side of the lens 2, and an annular light source 4 arranged between the lens 2 and a display screen. The camera 1 and the lens 2 are used for shooting and imaging, and the illumination light source 3 can vertically irradiate the display screen, so that the display screen can clearly image. The annular light source 4 can illuminate the display screen, and the imaging degree of cracks on the display screen is increased.
The center of the annular light source 4 and the lens 2 are on the same axis, the annular light source 4 comprises a plurality of uniformly arranged partitions 41, and light rays of the partitions 41 vertically irradiate on cracks of the display screen. The lens 2 is opposite to the display screen and receives the light rays of the illumination light source 3 and the annular light source 4 reflected by the display screen.
And, referring to fig. 2, a cross-sectional view of a partition is provided for an embodiment of the present application. As shown in fig. 2, the ring-shaped light source 4 has a ring-shaped structure. In practical application, light emitted by the illumination light source 3 can penetrate through an inner ring of the annular light source 4 to vertically irradiate on a display screen, and the size of the inner ring of the annular light source 4 is matched with the size of a light inlet end of the lens 2, so that the light entering the lens 2 can clearly image the display screen. And the plurality of sub-areas 41 are concentrically arranged, that is, the annular light source 4 is surrounded by the plurality of sub-areas 41, and the cross section of the sub-area 41 is in the shape of a concentric circular arc. In order to better accommodate the crack imaging in different extension directions, the number of the partitions 41 may be 6 or 8 and more, the application is not particularly limited, and the size of the arc angle of the partition 41 may be changed according to actual needs.
The inner side of the subarea 41 is provided with a luminous light source, and a plurality of subareas 41 are independently turned on and off. The light source can be a plurality of LED light beads, and the LED light beads are arranged side by side. The light of LED light pearl is the contained angle with the display screen, and the slope shines on the display screen, and is a plurality of the incline direction of LED light pearl is the same. The size of an included angle formed between the light rays of the LED light beads and the display screen can be designed according to actual needs. Since a plurality of the partitions 41 are connected in a surrounding manner, it can be seen that the irradiation directions of the LED light beads are different between the partitions 41. In practical application, the annular light source 4 consisting of the independent bright and dark subareas 41 is additionally arranged, so that light rays vertical to the crack direction can be emitted, and the crack can be imaged more easily. Meanwhile, the subareas 41 can be independently turned on and off, so that the influence of light rays emitted among different subareas 41 on the imaging of the same crack is avoided, namely, other light rays of the subareas 41 with smaller contribution to the imaging can be removed, and the contrast ratio of the crack in the imaging can be increased.
Referring to fig. 3, a schematic structural diagram of another display screen crack detection imaging device provided in the embodiment of the present application is shown. As shown in fig. 3, there may be a plurality of annular light sources 4, the centers of the plurality of annular light sources 4 are on the same axis as the lens 2, and the plurality of annular light sources 4 are independently turned on or off. In practical application, included angles formed by the luminous light sources arranged on the annular light sources 4 and the display screen can be different, so that other illumination angles can be increased, and the crack detection rate can be increased to a greater extent.
The illumination light source 3 can be coaxial light source, coaxial light source is provided with half mirror 31, half mirror 31 sets up with 45 slopes, half mirror 31's plane of reflection is towards coaxial light source's light emitting end, half mirror 31's plane of transmission is towards camera 1 and camera lens 2. The light emitted by the coaxial light source is reflected to the display screen through the half-transmitting and half-reflecting mirror 31, and the lens 2 receives the light passing through the half-transmitting and half-reflecting mirror 31. The light emitting end of the coaxial light source can be a point light source or a surface light source. In practical application, the coaxial light source can provide more uniform illumination, so that the display screen can be clearly imaged.
In the embodiment of the present application, the camera 1 may be an area-array camera, and the magnification of the area-array camera may be 5 times, 10 times, or 15 times. In practical application, the area-array camera can acquire a complete display screen image at one time. As the width of the crack is generally 1-5 mu m, and the length of the crack is generally less than mu 100m, a camera with larger magnification is required for shooting, and area-array cameras with different magnifications can clearly image the cracks with different sizes, so that the imaging effect is improved.
In the embodiment of the present application, the brightness of the illumination light source 3 and the brightness of the ring light source 4 can be independently adjusted, and the brightness of each of the partitions 41 of the ring light source 4 can be independently adjusted.
In practical application, the steps of detecting and imaging the cracks of the display screen can be as follows: firstly, the illumination light source 3 is lightened, the annular light source 4 is not lightened, and a crack image is acquired once. Next, the illumination light source 3 is not turned on, the partitions 41 of the ring light source 4 are sequentially and independently turned on, and after each partition 41 is turned on, a crack image is collected once, so that the same number of crack images as the number of the partitions 41 are obtained. The detection imaging steps of the display screen cracks can also be as follows: the annular light sources 4 on the same axis work sequentially from top to bottom. The illumination light source 3 is not lighted, the partitions 41 of the annular light source 4 at the upper end are sequentially and independently lighted, the rest annular light sources 4 are not lighted, and after each partition 41 is lighted, crack image acquisition is carried out for one time. Then, the sub-areas 41 of another annular light source 4 on the same axis are sequentially and independently lighted, the other annular light sources 4 are not lighted, and after each sub-area 41 is lighted, a crack image is acquired. The detection imaging steps of the display screen cracks can also be as follows: the illumination light source 3 and the plurality of partitions 41 of the plurality of annular light sources 4 are combined for illumination imaging.
The device may also comprise an illumination source 3 as described in the above embodiments and a ring light source 4. The annular light source 4 is of an annular structure, the plurality of subareas 41 are concentrically arranged, and the cross section of each subarea 41 is in a concentric circular arc shape. The inner side of the subarea 41 is provided with a luminous light source, and a plurality of subareas 41 are independently turned on and off. The luminous light source is a plurality of LED light beads, and the LED light beads are arranged side by side. And the light rays of the LED light beads are obliquely irradiated on the display screen. The annular light sources 4 are multiple, the centers of the annular light sources 4 and the lens 2 are on the same axis, and the annular light sources 4 are independently turned on and off. The subareas 41 of the ring light source 4 are used for illuminating cracks with different extension directions. The illumination light source 3 is a coaxial light source, the coaxial light source is provided with a half-transmitting and half-reflecting mirror 31, light rays emitted by the coaxial light source pass through the half-transmitting and half-reflecting mirror 31 to be reflected to a display screen, and the lens 2 receives the light rays penetrating through the half-transmitting and half-reflecting mirror 31. The light emitting end of the coaxial light source is a point light source or a surface light source. The illumination light source 3 is used for increasing the brightness of the display screen so as to image the display screen. And the magnification of the area-array camera is 5 times, 10 times or 15 times. The camera 1 can shoot a display screen, and clear images of cracks can be obtained at one time.
According to the technical scheme, the display screen crack detection imaging device comprises: the device comprises a camera 1, a lens 2 fixedly connected with the camera, an illumination light source 3 arranged on the light inlet side of the lens 2, and an annular light source 4 arranged between the lens 2 and a display screen. The center of the annular light source 4 and the lens 2 are on the same axis, the annular light source 4 comprises a plurality of uniformly arranged partitions 41, and light rays of the partitions 41 vertically irradiate on cracks of the display screen. The lens 2 is opposite to the display screen and receives the light rays of the illumination light source 3 and the annular light source 4 reflected by the display screen. In the technical scheme of this application, the subregion 41 of annular light source 4 can independently go out, launches the light of equidirectional not for the different crackle homoenergetic of extending direction can obtain vertical irradiation's light, realizes clear formation of image. Therefore, when the device is used for detecting cracks of the display screen, the cracks in different extending directions can be obviously imaged, and the crack detection rate is high.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (8)
1. A display screen crack detection imaging device, comprising:
the device comprises a camera (1), a lens (2) fixedly connected with the camera (1), an illumination light source (3) arranged on the light inlet side of the lens (2), and an annular light source (4) arranged between the lens (2) and a display screen;
the center of the annular light source (4) and the lens (2) are on the same axis, the annular light source (4) comprises a plurality of uniformly arranged subareas (41), and light rays of the subareas (41) vertically irradiate on a display screen crack; the lens (2) is opposite to the display screen and receives the light rays of the illumination light source (3) and the annular light source (4) reflected by the display screen.
2. The display screen crack detection imaging device according to claim 1, wherein the annular light source (4) is of an annular structure, a plurality of the subareas (41) are concentrically arranged, and the cross section of each subarea (41) is in the shape of a concentric circular arc; the inner side of the subarea (41) is provided with a luminous light source, and the subareas (41) are independently turned on and off.
3. The display screen crack detection imaging device of claim 2, wherein the light source is a plurality of LED light beads, and the LED light beads are arranged side by side; and the light rays of the LED light beads are obliquely irradiated on the display screen.
4. The display screen crack detection imaging device according to any one of claims 1 to 3, wherein the annular light sources (4) are multiple, the centers of the annular light sources (4) are on the same axis with the lens (2), and the annular light sources (4) are independently turned on and off.
5. The display screen crack detection imaging device according to any one of claims 1 to 3, wherein the illumination light source (3) is a coaxial light source, the coaxial light source is provided with a half-mirror (31), light emitted by the coaxial light source is reflected onto the display screen through the half-mirror (31), and the lens (2) receives the light transmitted through the half-mirror (31).
6. The display screen crack detection imaging device of claim 5, wherein the light emitting end of the coaxial light source is a point light source or a surface light source.
7. The display screen crack detection imaging device according to any one of claims 1 to 3, wherein the camera (1) is an area-array camera, and the magnification of the area-array camera is 5 times, 10 times or 15 times.
8. The display screen crack detection imaging device according to claim 1, wherein the annular light source (4) is of an annular structure, a plurality of the subareas (41) are concentrically arranged, and the cross section of each subarea (41) is in the shape of a concentric circular arc; the inner side of each subarea (41) is provided with a luminous light source, and a plurality of subareas (41) are independently turned on and off;
the light-emitting light source is a plurality of LED light beads which are arranged side by side; the light rays of the LED light beads are obliquely irradiated on the display screen;
the annular light sources (4) are multiple, the centers of the annular light sources (4) and the lens (2) are positioned on the same axis, and the annular light sources (4) are independently turned on or off;
the lighting source (3) is a coaxial light source, the coaxial light source is provided with a semi-transparent and semi-reflective mirror (31), light rays emitted by the coaxial light source are reflected to a display screen through the semi-transparent and semi-reflective mirror (31), and the lens (2) receives the light rays penetrating through the semi-transparent and semi-reflective mirror (31);
the light emitting end of the coaxial light source is a point light source or a surface light source;
the camera (1) is an area-array camera, and the magnification of the area-array camera is 5 times, 10 times or 15 times.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023331499.4U CN214174193U (en) | 2020-12-31 | 2020-12-31 | Display screen crack detection imaging device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023331499.4U CN214174193U (en) | 2020-12-31 | 2020-12-31 | Display screen crack detection imaging device |
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| CN214174193U true CN214174193U (en) | 2021-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018934A (en) * | 2021-11-03 | 2022-02-08 | 四川启睿克科技有限公司 | Imaging system for detecting surface defects of arc-shaped metal |
| CN114216962A (en) * | 2021-12-03 | 2022-03-22 | 浙江爱丽智能检测技术集团有限公司 | Support deformation crack detection method, system, terminal and medium |
-
2020
- 2020-12-31 CN CN202023331499.4U patent/CN214174193U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018934A (en) * | 2021-11-03 | 2022-02-08 | 四川启睿克科技有限公司 | Imaging system for detecting surface defects of arc-shaped metal |
| CN114018934B (en) * | 2021-11-03 | 2023-11-03 | 四川启睿克科技有限公司 | Imaging system for arc-shaped metal surface defect detection |
| CN114216962A (en) * | 2021-12-03 | 2022-03-22 | 浙江爱丽智能检测技术集团有限公司 | Support deformation crack detection method, system, terminal and medium |
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