Telecentric Backlight is illuminating
An
Edmund Optics product story
Edited by the Engineeringtalk editorial team
Sep 30, 2008
The Telecentric Backlight Illuminator combines the advantages of backlighting an object with the benefits of a telecentric lens design.
Backlighting is an excellent way to improve machine vision applications that need to measure edges, because silhouetting the object provides high contrast for improved edge detection while reducing unneeded surface detail.
Normal backlights, however, can reduce the sharpness of the edge, because diffuse reflections occur from the broad area output and thus reduce the accuracy of gauging and inspection systems.
Because the Telecentric Backlight Illuminator uses parallel rays, it avoids these problems.
Edmund Optics' Telecentric Backlight Illuminator is based on the same principles as telecentric measuring lenses, which improve gauging accuracy by eliminating parallax errors.
The Illuminators are compatible with EO's Silver Series Telecentric measuring lenses, which are considered among the best telecentric lenses in the industry.
This device also substantially increases illumination compared to a standard backlight, which allows faster measurements.
It accepts quarter-inch fibre-optic light guides or 0.312in LEDs.
Visitors to Opto Paris (Booth 1.G.30), 30 September to 2 October, and Vision Stuttgart (Hall 4, Booth A51), 4-6 November, can view EO's Telecentric Illumination Demonstration.
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