Description; Design Details - Newport DL225 User Manual

DL Stage Series
2.0

—Description

EDH0391En1031 — 03/18
The DL linear stages Series is a high performance but very affordable,
linear motor driven with an integrated motion controller. Optimized for
small loads, repeatable positioning and fast traverse speeds, it's an ideal
solution for spectroscopy applications ranging from pump-probe,
interferometry, 2DIR, etc.
With travel ranges of 125 mm, 225 mm and 325 mm, this offering covers
almost all possible delay needs from femtosecond to nanosecond delays.
The DL stage utilizes an FEM-optimized extruded aluminum body that is
extremely stiff, while minimizing the bending effect caused by the different
thermal expansion coefficients of the aluminum body and the steel rails.
The rails' position relative to the profile's neutral fiber minimizes the effect
due to bi-metal thermal expansion. The body's rigidity minimizes the
deflection under load.
The stage has been designed to be mounted on standard breadboards
(with a 0.2 mm flatness). This minimizes the effect of the table to pitch,
yaw and roll performance of the stage.
Recirculating ball bearing slides provide excellent payload capabilities and
long life. The movement is smooth with low noise.
Unlike screw driven stages, the DL employs a centered, high efficiency 3-
phase, synchronous ironless, linear motor as the driving element. This
drive system is absolutely non-contact, and has the advantage of higher
speed, high acceleration and high system responsiveness without wear
associated with motor brushes or drive screws. And because of the fully
integrated linear motor, the DL is shorter than a comparable screw driven
stage.
Precision position feedback is provided by a very repeatable linear scale
mounted in the stage. The encoder signals are interpolated by the
dedicated Newport motion controller with nanometer resolution for
outstanding position sensitivity, repeatability, and stability. A home
position is incorporated on the same scale, avoiding the use of additional
electronics or mechanics for improved reliability and accuracy.
Thus, the DL is the optimum solution for space constrained applications
that require high-throughput, high reliability, and ultra-quiet operation.
To facilitate setups, beam kits consisting of retroreflectors, mirrors,
mounts and other optomechanical parts, are available to suit various
wavelengths and delay line configurations.
2.1

Design Details

Base Material
Bearings
Drive System
Motor Initialization
Motor Commutation
Feedback
Limit
Home Switch
Controller Compatibility
Cable
MTBF
RoHS
Compliant
High-Performance Delay Line Stages
3-phase synchronous ironless linear motor (without Hall effect sensors)
Has to be done by the controller
Done by the controller on encoder feedback
Linear glass scale, 80 µm signal period, 1 V
Optical, on encoder's fiducial track, located at the minus end of travel
3 m long pigtail cables included
NOTE
This product complies with the RoHS directive
(Restriction of Hazardous Substances) .
2
Extruded Aluminum
Recirculating bearings
PP
Optical
DL Controller
20,000 hours