CN112683496A - Curved surface screen optical characteristic detection device and use method - Google Patents
Curved surface screen optical characteristic detection device and use method Download PDFInfo
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- CN112683496A CN112683496A CN202011476931.0A CN202011476931A CN112683496A CN 112683496 A CN112683496 A CN 112683496A CN 202011476931 A CN202011476931 A CN 202011476931A CN 112683496 A CN112683496 A CN 112683496A
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Abstract
The invention discloses a curved screen optical characteristic detection device and a use method thereof, the device comprises a base, a movable slide rail is arranged on the base, the movable slide rail is connected with a movable seat in a sliding way through a slide block, a curved screen to be tested is placed on the movable seat, a camera moving rod is arranged at one end of the movable slide rail, a CCD camera is rotatably arranged on the camera moving rod, a lens of the CCD camera faces the movable slide rail, support frames are arranged on two sides of the movable slide rail, a reflector is rotatably arranged on the support frames, the curved screen to be tested comprises a horizontal screen surface and a curved screen surface, the mirror surface of the reflector is parallel to the horizontal bus of the curved screen surface and forms an included angle with the horizontal screen surface, light compensation plates with the same number as the reflector are also arranged on the base, the CCD camera is used for collecting detection images of the horizontal screen surface and the curved screen surface of the curved screen to, the high-efficiency detection of the optical characteristics of the curved screen is realized.
Description
Technical Field
The invention relates to the technical field of OLED display screen detection, in particular to a curved surface screen optical characteristic detection device and a using method thereof.
Background
With the continuous development of OLED (Organic Light-Emitting Diode) screen technology, more and more display screens are manufactured as curved display screens to increase the display area and the viewing angle. .
The traditional defect detection method aiming at the two-dimensional plane panel is not suitable for the curved screen. In the prior art, the following two methods are mainly used for detecting the curved screen: 1. photographing the curved screen by using three CCD cameras, and respectively analyzing the optical characteristics of the front part and the curved parts at the two sides; 2. and (3) using a CCD camera, respectively photographing the front side and the side surface of the curved screen after rotating the curved screen, and analyzing the optical characteristics. Although the first detection method is highly efficient, it increases the detection cost, and the second detection method is too inefficient.
Disclosure of Invention
In order to overcome the above disadvantages, the present invention provides an optical characteristic detecting device for a curved screen and a method for using the same, which can efficiently detect the optical characteristics of the curved screen.
In order to achieve the above purposes, the invention adopts the technical scheme that: a curved screen optical characteristic detection device and a using method thereof comprise a base, wherein a movable slide rail is arranged on the base, the movable slide rail is connected with the movable seat in a sliding way through a slide block, the curved screen to be tested is placed on the movable seat, one end of the movable slide rail is provided with a camera moving rod, a CCD camera is rotatably arranged on the camera moving rod, the lens of the CCD camera faces the movable slide rail, the two sides of the movable slide rail are both provided with a support frame, the supporting frame is rotatably provided with a reflector, the curved screen to be tested comprises a horizontal screen surface and a curved screen surface, the mirror surface of the reflector is parallel to the horizontal generatrix of the curved screen surface and forms an included angle with the horizontal screen surface, the base is also provided with optical compensation plates with the same number as the reflectors, and acquiring detection images of a horizontal screen surface and a curved screen surface of the curved screen to be detected by a CCD (charge coupled device) camera and detecting defects of the horizontal screen surface and the curved screen surface.
Furthermore, the support frame is including supporting base and two bracing pieces, two the bracing piece rotates with the speculum both ends respectively and is connected, support base upward parallel arrangement has a plurality of spacing grooves and speculum bottom to be located the spacing inslot.
Further, the camera moving rod comprises a bottom rod, an ejector rod and a lead screw, the bottom rod and the ejector rod are respectively connected with two ends of the lead screw, the lead screw is connected with the camera fixing seat through a nut, and the CCD camera is rotatably connected with the camera fixing seat.
Further, be provided with the turning block on the CCD camera, be provided with the rotation groove on the camera fixing base, the turning block is located and rotates the inslot and shape, the size in rotation groove all match with the rotation groove, be connected through turning block and rotation groove cooperation rotation between CCD camera and the camera fixing base.
A use method of a curved surface screen optical characteristic detection device comprises the following steps:
s1, respectively acquiring a horizontal screen surface detection image and a curved screen surface detection image of the curved screen to be tested by using the CCD camera;
s2, comparing and correcting the horizontal screen detection image and the detection image of the curved screen in S1 with the preset horizontal screen image and curved screen image respectively to form a horizontal screen correction detection image and a curved screen correction detection image;
s3, respectively carrying out defect detection on the horizontal screen correction detection image and the curve screen correction detection image in the S2 to generate detection results, wherein the detection results comprise types and coordinates of defects;
and S4, scaling and translating the defect coordinates obtained in the S3 based on the resolution of the CCD camera and the relative position of the CCD camera and the curved screen to be tested, so that the coordinates of the defect correspond to the resolution of the curved screen to be tested, and determining the position information of the defect of the curved screen to be tested.
The invention provides a curved surface screen optical characteristic detection device and a use method thereof, which have the beneficial effects that:
1. the CCD camera is moved in place to be detected by arranging the movable slide rail, and the detection efficiency is improved.
2. Set up the speculum in removal slide rail both sides, through the propagation direction of the light that the curved screen face of awaiting measuring curved screen sent, thereby make the CCD camera can acquire the horizontal screen face of the curved screen face of awaiting measuring and the detection image of curved screen face simultaneously, can improve the accuracy and the detection efficiency that the curved screen detected, also reduced simultaneously and detected the cost.
3. By arranging the optical compensation plate, the imaging is shifted by a distance in the axial direction, and the offset distance can compensate the optical path of the imaging of the curved screen relative to the horizontal screen, so that the single-time focusing imaging of the curved surface and the plane is realized, the detection time of equipment is shortened, and the defect detection efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a flow chart of the present invention.
In the figure:
1-a base; 2-moving the slide rail; 3-moving the seat; 4-a camera moving bar; 5-a CCD camera; 6-a support frame; 7-a mirror; 8-an optical compensation plate; 9-camera mounting.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to the attached drawings 1-3, a curved screen optical characteristic detection device comprises a base 1, a movable slide rail 2 is arranged on the base 1, the movable slide rail 2 is connected with a movable base 3 in a sliding manner through a slide block, a curved screen to be tested is placed on the movable base 3, a camera moving rod 4 is arranged at one end of the movable slide rail 2, a CCD camera 5 is arranged on the camera moving rod 4 in a rotating manner, the camera moving rod 4 comprises a bottom rod, a top rod and a lead screw 4, the bottom rod and the top rod are respectively connected with two ends of the lead screw 4, the lead screw 4 is connected with a camera fixing base 9 through a nut, a rotating block is arranged on the CCD camera 5, a rotating groove is arranged on the camera fixing base 9, the rotating block is positioned in the rotating groove, the shape and the size of the rotating groove are matched with those of the rotating groove, the CCD camera 5 is connected with the camera fixing base 9 in, the two sides of the movable sliding rail 2 are both provided with a support frame 6, the support frame 6 comprises a support base and two support rods, the two support rods are respectively rotatably connected with two ends of the reflector 7, a plurality of limit grooves are arranged on the support base in parallel, the bottom of the reflector 7 is positioned in the limit grooves, the curved screen to be tested comprises a horizontal screen surface and a curved screen surface, the mirror surface of the reflector 7 is parallel to a horizontal bus of the curved screen surface and forms an included angle with the horizontal screen surface, the included angle is 110-135 degrees, the base 1 is also provided with optical compensation plates 8 with the same number as the reflector 7, when the curved screen surface is imaged on the CCD camera 5 through the reflector 7 and the optical compensation plates 8, the equivalent imaging distance of the curved screen surface imaged on the CCD camera 5 is the same as the equivalent imaging distance of the horizontal screen surface imaged on the CCD camera 5 or the difference of the equivalent imaging distance.
The use method of the curved screen optical characteristic detection device comprises the following steps:
s1, respectively acquiring a horizontal screen surface detection image and a curved screen surface detection image of the curved screen to be tested by using the CCD camera 5;
s2, comparing and correcting the horizontal screen detection image and the detection image of the curved screen in S1 with the preset horizontal screen image and curved screen image respectively to form a horizontal screen correction detection image and a curved screen correction detection image;
s3, respectively carrying out defect detection on the horizontal screen correction detection image and the curve screen correction detection image in the S2 to generate detection results, wherein the detection results comprise types and coordinates of defects;
and S4, scaling and translating the defect coordinates obtained in the S3 based on the resolution of the CCD camera 5 and the relative position of the CCD camera 5 and the curved screen to be tested, so that the coordinates of the defect correspond to the resolution of the curved screen to be tested, and determining the position information of the defect of the curved screen to be tested.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a curved surface screen optical property detection device, includes base (1), be provided with movable slide rail (2) on base (1), movable slide rail (2) are through slider and removal seat (3) sliding connection, the curved surface screen that awaits measuring places on removing seat (3), its characterized in that: remove slide rail (2) one end and be provided with camera carriage release lever (4), it is provided with CCD camera (5) to rotate on camera carriage release lever (4), the camera lens of CCD camera (5) is towards slide rail (2), slide rail (2) both sides all are provided with support frame (6), it is provided with speculum (7) to rotate on support frame (6), the curved surface screen that awaits measuring includes horizontal screen face and curved screen face, the mirror face of speculum (7) and the horizontal generating line of curved screen face are parallel and with horizontal screen face between form the contained angle, still be provided with light compensation plate (8) that are equal with speculum (7) quantity on base (1), work as curved screen face screen is through speculum (7) and light compensation plate (8) when formation of image on CCD camera (5), the equivalent image distance that curved screen face formed of image on CCD camera (5) is the same with the equivalent image distance difference that horizontal screen face formed of image on CCD camera (5) or equivalent image difference are predetermineeing Within a threshold range.
2. The method for detecting the optical characteristics of the curved screen according to claim 1, wherein the method comprises the following steps: the support frame (6) is including supporting base and two bracing pieces, two the bracing piece rotates with speculum (7) both ends respectively and is connected, support base parallel arrangement has a plurality of spacing grooves and speculum (7) bottom to be located the spacing groove.
3. The method for detecting the optical characteristics of the curved screen according to claim 1, wherein the method comprises the following steps: the camera moving rod (4) comprises a bottom rod, an ejector rod and a lead screw (4), the bottom rod and the ejector rod are respectively connected with two ends of the lead screw (4), the lead screw (4) is connected with a camera fixing seat (9) through a nut, and a CCD camera (5) is rotatably connected with the camera fixing seat (9).
4. The method for detecting the optical characteristics of the curved screen according to claim 3, wherein the method comprises the following steps: be provided with the turning block on CCD camera (5), be provided with the rotation groove on camera fixing base (9), the turning block is located and rotates the inslot and rotate shape, the size in groove and all match with the rotation groove, rotate through turning block and rotation groove cooperation between CCD camera (5) and camera fixing base (9) and be connected.
5. The method for detecting the optical characteristics of the curved screen according to claim 1, wherein the method comprises the following steps: the included angle is 110-135 degrees.
6. The use method of the curved screen optical property detection device according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
s1, respectively acquiring a horizontal screen surface detection image and a curved screen surface detection image of the curved screen to be tested by using the CCD camera (5);
s2, comparing and correcting the horizontal screen detection image and the detection image of the curved screen in S1 with the preset horizontal screen image and curved screen image respectively to form a horizontal screen correction detection image and a curved screen correction detection image;
s3, respectively carrying out defect detection on the horizontal screen correction detection image and the curve screen correction detection image in the S2 to generate detection results, wherein the detection results comprise types and coordinates of defects;
s4, based on the resolution of the CCD camera (5) and the relative position of the CCD camera (5) and the curved screen to be tested, scaling and translating the defect coordinates obtained in the S3 to enable the coordinates of the defect to correspond to the resolution of the curved screen to be tested, and determining the position information of the defect of the curved screen to be tested.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011476931.0A CN112683496A (en) | 2020-12-15 | 2020-12-15 | Curved surface screen optical characteristic detection device and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113677981A (en) * | 2021-07-06 | 2021-11-19 | 香港应用科技研究院有限公司 | Flexible display inspection system |
| CN113686873A (en) * | 2021-08-10 | 2021-11-23 | 广东省威汇智能科技有限公司 | Vehicle-mounted multi-connected screen based testing device and method |
| CN115371966A (en) * | 2022-08-22 | 2022-11-22 | 广东省晶鸿电子有限公司 | Curved surface display screen defect detecting equipment |
| CN116156328A (en) * | 2023-04-23 | 2023-05-23 | 湖南省迈德威视科技有限公司 | Industrial camera applied to product defect detection |
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Application publication date: 20210420 |