Longer travel for high-resolution actuators
A
Newport Spectra-Physics product story
Edited by the Engineeringtalk editorial team
Oct 28, 2003
LTA series actuators are the first to combine both high-resolution motion and a very long range of travel (50mm) in a novel, compact package.
LTA series actuators are the first to combine both high-resolution motion and a very long range of travel (50mm) in a novel, compact package.
The actuators come in two versions, LTA-HL and LTA-HS that provide resolutions of 7.4 and 35nm as well as a motion sensitivity of 50 and 100nm, respectively, for each version.
Moreover, the LTA offers a significant increase in speed over other high-resolution actuators.
LTA actuators are primarily intended for use in benchtop optomechanical systems in research laboratories, R and D programs, and test and measurement applications.
They readily mate with most of Newport's extensive family of translation and rotation stages to enable automated, remote control operation.
Typical uses include focusing laser beams, adjusting beam position, and automated optimisation of laser cavity optics.
The new LTA series use a DC motor with a high-resolution encoder, which provides precise closed loop operation, with a minimal incremental motion of 50nm.
Also, the overall size of the actuator is much smaller than competitive products, due to the unique parallel motor and drive shaft configuration.
And, unlike many other high-resolution actuators, the LTA series feature a nonrotating drive shaft which ensures maximum motion linearity and avoids long term wear to the stage.
The utility and flexibility of the LTA series is further enhanced by the incorporation of hard, user-adjustable limit switches, which is a critical advantage in applications where extended motion could cause damage.
Two different versions of the LTA are offered.
The LTA-HS is optimised to provide the highest possible speed (up to 5mm/s).
The LTA-HL is optimised for high load applications, such as vertical motion of highly loaded stages.
Vacuum compatible versions of both models are available enabling operation to 10e-6torr.
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Contact Newport Spectra-Physics
Tel +33 1 60 91 68 68
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