light emitting diode (LED)
A semiconductor diode that emits light when a voltage is applied to it and that is used especially in electronic devices (as for an indicator light).
linear standard scale
In metrology, precision glass scales used for checking magnification accuracy of comparators.
line pairs / mm
The finest spacing of line pairs that can be visually resolved for standardized patterns of alternating black and white lines. In a vision metrology system, this measure reflects camera resolution, monitor resolution, and the performance of the optics.
M
magnification (mag)
The apparent enlargement of an object by an optical instrument. Abbreviated mag.
magnification checker
A tool to assist machine vision users in qualifying the pixel size of any camera type.
magnification, image
Image size on the video monitor divided by the corresponding object size. Same as lens magnification in a properly adjusted optical comparator.
magnification, lens
In a vision metrology system, the image size in the sensor plane divided by the corresponding object size (0.24X, 0.16X, 0.11X for HDV500 telecentric lenses). In an optical comparator, the image size on the projection screen divided by the corresponding object size (typically 10X to 100X).
MetLogix M3 Software
Advanced metrology software for performing two and three axis measurements in encoder-based systems and field of view systems at high levels of precision and accuracy. M3 software is included with HDV systems.
micron (µm)
A unit in the metric system equal to one millionth of a meter or approximately 0.00003937 inches. It is commonly used to describe the uncertainty of precision measuring machines.
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