Position correction method of shooting device for film inspection
A technology for photographing equipment and thin films, applied in measuring devices, testing of machines/structural components, material analysis through optical means, etc., can solve problems such as misjudgment by inspection devices and operator errors
Inactive Publication Date: 2014-09-10
DONGWOO FINE CHEM CO LTD
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Problems solved by technology
As mentioned above, along with the improvement of product precision, the precision of inspection equipment must be improved. However, vibration and noise generated in the manufacturing environment or operator's operation errors may become important factors that cause erroneous judgments of inspection equipment.
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Embodiment Construction
[0035] The method for correcting the position of an imaging device for film inspection according to the present invention has the steps of: attaching a correction film printed with a graphic pattern of a predetermined area on the surface of a curved surface for transferring the film; and photographing the curved surface by using an imaging device. If the size of the pattern in the photographed image is less than 95% or more than 105% of the normal state, it is judged as photographed There is an abnormality in the vertical position of the equipment (the distance between the imaging equipment and the film), so that the position of the imaging device for inspecting film products can be corrected correctly.
[0036] The content of the present invention will be described below.
[0037] The invention provides a method for correcting the position of a photographing device for film inspection. In more detail, the present invention provides a position correction method of an imaging ...
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The present invention relates to a position correction method of a shooting device for film inspection. The shooting device is used for inspecting film products made by utilizing a curved solid such as a roller. The position correction method of the shooting device for film inspection includes the following steps: pasting a film for correction on which patterns with specified area are passed on a surface of the curved solid for transferring the film; and shooting the film for correction on the curved surface by utilizing the shooting device, and comparing the size of the pattern of the obtained image with the size of a normal pattern, if the size of the pattern of the obtained image is smaller than 95% or larger than 105% of size of the normal pattern, the vertical position (the distance between the device and the film) of the shooting device is judged to be abnormal, so that the position of the shooting device for film inspection can be corrected accurately.
Description
technical field [0001] The invention relates to a method for correcting the position of a curved surface shooting device. More specifically, the present invention relates to a method for correcting the position of a shooting device for inspecting a film manufactured by using a curved surface as a transfer unit. Background technique [0002] Rolls that are easy to wind up and transport are widely used in the mass production of film-like products such as polarizers, TAC, and retardation films. Because the roll has the advantages of easy winding and transfer, it is very advantageous manufacturing equipment for continuous production of film-like products. [0003] On the one hand, from the viewpoint of production efficiency, it is preferable that the quality inspection of the film product produced by the above-mentioned method can be quickly performed while the film is being transferred by the rolls. On the other hand, as electronic devices using optical films such as polarizer...
Claims
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Login to View More IPC IPC(8): G01N21/84
CPCG01M11/0207G01N21/01G01N21/8422
Inventor 金种佑朴宰贤千正美
Owner DONGWOO FINE CHEM CO LTD