Monday, August 29, 2011

Appreciating telecentricity

Telecentric imaging, and lighting, are valuable tools for the machine vision professional, yet they seem poorly understood. To remedy this, over the last four weeks Spencer Luster of LightWorks has contributed a series of four articles taking an in-depth look at the subject. If you’ve been busy, here’s another chance to see … as the TV people like to say.

in which Spencer shows us how to use a telecentric lens and a collimated backlight to highlight flaws in transparent materials.

Here Spencer discusses the importance of alignment and adjustment.

Which should be bigger – the image spot size or the telecentric entrance pupil?

Doing clever things with a darkfield backlight.

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