AVR200 and AVR300 User Guide
telecentric illumination
Optics are used to direct light from a fiber optic light guide or LED onto an object under inspection, producing a high contrast silhouette. A telecentric illumination increases edge contrast and measurement accuracy by decreasing diffuse reflections from the object. See the following figure.
tetrafluoroethylene (TFE)
A self-lubricating polymer coating used on precision lead screws.
TFE
See Tetrafluoroethylene.
V
VED
See video edge detection.
video edge detection (VED) A system where a video camera and digital image processing are used to detect edges or other features.
Z
zoom optics Optics which can change magnification based on a user selection. Zoom control can be manual or motorized, depending on the metrology system.
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