Resin optical filter film crack detection device and method

Abstract

The invention discloses a resin optical filter film crack detection device and method. The device comprises a bearing device, a light source device, an image acquisition device and an image processingand analyzing system. The bearing device is used for bearing a to-be-detected optical filter; the light source device is arranged below the bearing device and is used for illuminating the optical filter; the image acquisition device is arranged above the bearing device, is arranged on the same vertical plane as the light source device, and is used for acquiring and outputting image information ofthe optical filter; and the image processing and analyzing system is used for receiving and processing the image information of the optical filter outputted by the image acquisition device and judging whether the optical filter has a film crack defect or not. According to the invention, the device and method can efficiently and comprehensively shoot and detect the film cracks of the resin opticalfilter, achieve the sorting of the optical filter with the film cracks, iron out the defect that film cracks exist in optical filter products leaving factories, and guarantees the stability and the uniformity of the quality of the optical filters.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of optical filters, and in particular to a film crack detection device and detection method of a resin optical filter. Background technique [0002] The filter inside the mobile phone lens is usually made of blue glass, and there is no film crack defect. However, when the material of the filter is replaced by resin, there will be hidden cracks inside the surface coating layer, that is, film cracks; It is difficult to clearly detect membrane crack defects with optical solutions. At the same time, it is difficult to detect such defects under a microscope with the most commonly used manual detection scheme. Therefore, there is a lack of an efficient and comprehensive detection solution to capture and detect membrane cracks. Contents of the invention [0003] The invention provides a film crack detection device and a detection method of a resin filter to solve the deficiencies in the ...

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Problems solved by technology

[0002] The filter inside the mobile phone lens is usually made of blue glass, and there is no film crack defect, but when the material of the filter is replaced by resin, there will be hidden cracks inside the surface coating layer, that is, film cracks; It is difficult to capture the membrane crack defect clearly by the optical scheme. At the same time, it is difficult to detect the defect under the microscope by the most commonly used manual detection scheme. Therefore, there is a lack of an efficient and comprehensive detection scheme to photograph and detect the membrane crack.

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