Keyence adds to laser displacement sensor range
A
Keyence (UK) product story
Edited by the Engineeringtalk editorial team
Sep 4, 2008
The LK-G Long Laser Displacement Sensor is the latest addition to the LK-G series from Keyence.
The sensor measures fast moving, rotating or high-temperature targets from a range of up to 1m.
Measurements include height, runout, warpage, vibration, thickness and profile.
The LK-G Long can be used in applications where remote sensor installation is required and the use of conventional sensors is not practical.
It offers a repeatability of 2um, an enhanced accuracy of 0.02 per cent and a 50kHz sampling speed.
Stable measurements can be 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 specifically for sensor applications.
The CCD provides the position of light within a pixel to achieve accuracy that Keyence say is two times higher than conventional models.
Keyence has also developed a new light-receiving unit to concentrate reflected light onto the Li-CCD.
An Ernostar lens system reduces spot distortion caused by aberrations.
A rigid die-cast body reduces deviations caused by temperature change.
Keyence's ABLE (Active Balanced Laser control Engine) technology senses target surface conditions and adjusts the laser light intensity to an optimal level.
With ABLE, LK-G performance is unaffected by reflections, colour or surface coatings.
An RPD (Real Peak detection) algorithm, also developed by Keyence, cancels the diffused light caused by laser beam reflections inside translucent targets.
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