Transparent material inspection system

Details Transparent material inspection system Transparent material inspection system

G - Physics

01

N

G01N 21/958 (2006.01) G01M 11/02 (2006.01) G01N 21/93 (2006.01)

Patent

CA 2568260

A system for the inspection of the optical quality of a part, object or product having a portion comprising transparent material such as ophthalmologic lenses, protective eyewear, visors, eyewear shield and the like is provided. A liquid crystal display (LCD) screen emits variable patterns of light through the transparent part under inspection to a charged coupled device (CCD) camera that captures the image and transmits the image data to an image processing module. The processed image data are then transmitted to an analysis module which then generally measures the dimensions of the part, the transparency, the colour and the optical strength. The analysis module also advantageously detects and measures the presence of dots, stains, scratches, optical distortions, fingerprints, cloudiness and other optical artefacts and/or defects in the transparent material. Accordingly, the patterns emitted by the LCD screen are designed to measure the optical specifications and highlight potential optical defects.

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