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Evaluating Illumination Options for Telecentric Imaging

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Telecentric and standard area backlights are powerful tools in locating and measuring edges, while in-line and ringlight illumination sources excel in applications in which evaluating surface detail is critical.

JEREMY GOVIER, EDMUND OPTICS

For machine vision applications requiring telecentric lenses, the proper illumination can be critical to the success of the imaging system. Achieving properly angled, even illumination can greatly affect the contrast of the image and the accuracy of measurements calculated from the image. A telecentric lens and backlight illuminator used for bottle inspection. Courtesy of Edmund Optics. To understand how illumination interacts with a telecentric lens, it’s important to first understand what makes a telecentric lens different from a standard imaging lens. Telecentric lenses...Read full article

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