Society of Optical Engineering - March 2013
Design & Engineering
Minus K Technology has released a
compact, high-capacity, low-frequency negative-stiffness
isolator designed to support heavy payloads while
reducing low-frequency vibrations. The new CM-1 isolator
comes in several capacity ranges to match vibration-sensitive
instruments such as SPMs (AFMS, STMs, etc), micro-hardness
testers, profilers, interferometers, electron microscopes,
or other imaging systems, for weight loads from 50
to 800 lbs.
The CM-1 can deliver a vertical natural frequency
of 1/2 Hz or less, which can be achieved over the
entire load range. Horizontal natural frequency is
load dependent. 1/2 Hz or less can be achieved at
or near the nominal load.
As with all Minus K isolators, the CM-1 is
completely passive, using no air or electricity. The new
isolators can be combined into multi-isolator systems to
support heavy payloads while taking up very little room
themselves. The CM-1 isolators can be placed on pedestals
to bring them to an appropriate height to retrofit existing
air tables, enabling existing table top systems to achieve
much better isolation.
If needed, the CM-1 isolators can be customized to achieve
user-specific needs. For example, different horizontal and
vertical frequencies, damping, etc. They can also be made
cleanroom and vacuum compatible.
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