Displacement sensors provide stable measurements
A
Keyence (UK) product story
Edited by the Engineeringtalk editorial team
May 19, 2008
LK-G sensors offer high stability, not only with fast moving, rotating, or vibrating targets, but also with in-line applications requiring data averaging.
The LK-G series laser displacement sensors from Keyence provides a repeatability of 0.01um, accuracy of +/-0.03% and a 50kHz sampling speed.
This measurement performance that cannot be achieved with conventional displacement sensors.
The LK-G series combines excellent repeatability and accuracy.
Models are available with a range up to 1000mm.
LK-G sensors offer high stability, not only with fast moving, rotating, or vibrating targets, but also with in-line applications requiring data averaging.
The LK-G achieves accuracy that is beyond the bounds of conventional CCD laser displacement sensors.
Precise, stable measurements can be easily and accurately obtained on any type of surface or material including black rubber, translucent and transparent targets and reflective or mirrored surfaces.
LK-G Sensors use a dedicated linearised CCD (Li-CCD), developed by Keyence for sensor applications.
The CCD provides the position of light within a pixel to achieve accuracy that is two times higher than conventional models.
The LK-G design achieves 25 times faster speeds with a sensitivity ten times higher than conventional systems.
Keyence has also developed a new light-receiving unit to concentrate reflected light onto the Li-CCD.
A newly developed high-accuracy Ernostar lens system drastically reduces spot distortion caused by aberrations.
A rigid die-cast body reduces deviations caused by temperature changes.
Keyence's ABLE (active balanced laser control engine) technology senses target surface conditions and adjusts the laser light intensity to an optimal level.
This provides a 13,000 times wider range of light intensity than previously possible.
With ABLE, LK-G performance is unaffected by reflections, colours or surface coatings.
An RPD (real peak detection) algorithm, developed by Keyence, cancels the diffused light caused by laser beam reflections inside translucent targets.
RPD makes it possible to obtain highly-accurate measurements on translucent targets like plastic and PCBs, plus transparent materials such as LCD cover glass and a wide range of glass materials.
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