LDS-10000 pages

LDS Series

Model LDS-1000 Laser Doppler scale

LASER SCALE FOR POSITIONING APPLICATIONS

Precision Linear Positioning

DESCRIPTION

FEATURES
High accuracy and high
resolution.
No need for periodic calibration.
No wearing parts for non-contact
devices.
Freedom to locate point of
measurement close to measured
object reduces Abbe Error.
Orthogonality of positioning
system determined by mirrors
not X-Y stages when using a flat
mirror target.
Electronics flexibility with
variable increment.
No mounting stress on scale.
No thermal expansion on scale.
No need for machined flat
surface for mounting scale
saving installation costs.
Higher loop gain possible for
closed loop servo control.
Optional hermetic seals for
hostile environments.
Rejection of vibration in two or
three planes reduces structural
resonance effects.

System Components

The LDS-1000 Laser Doppler Scale
(LDS) provides high speed, high accuracy
and long range positioning for single or
multiple axis applications, such as linear
motors, large gantry machines, CNC
machine tools, CMM's, precision stages,
Supermicrometers, and other linear
measurement devices. The LDS is
compact, easy to install, easy to align, has
less Abbe off-set, no cross coupling, and is
cost effective.

L-109 Laser Head: HeNe laser head,
ruggedized for direct installation in a
machine tool and other positioning
application. Contains a HeNe tube, optics
and a photodetector receiver and outputs to
P-311 Processor Module.

The LDS Series is compatible with all
mainstream controller feedback systems.
Versions are also available for operation
with an IBM PC compatible computer,
and the Laser head is insensitive to dirt,
oil, and hostile environments.

L-201 Laser Head: Wide beam and long
range laser head with 12 mm output laser
beam diameter.

The LDS Laser Head reflects a modulated
laser beam off a movable target. The beam
is detected and processed for displacement
information used by your system
controller to determine position.
Installation is made easy with only three
components; the laser head, the
retroreflector, and the processor
module, that produces either
AQuadB Square Waves or
Up/Down
Pulses.
The
LDS-1000 directly replaces
glass scales and other
positioning devices in your
existing systems, and optional
cards include RS-232, and
Sinusoidal outputs.

L-109HP Laser Head: High Performance
laser head with higher stability and
accuracy. A solid mounting base and a
linear DC power supply are used.

P-311 Processor Module: This is a tower
type box, contains the electronics for signal
processing and generation of the A Quad B
square waves or Up/Down Pulses. Many
options can also be added to the Processor
module. A TTL level error is standard. An
optional error signal/warning signal with
latching relay is also available.
P-108HP Processor Module: This
Processor Module with a linear dc power
supply P-107HP is for the high performance
laser scale LDS-1000HP.
R-102A Retroreflector: 1/2" diameter
retroreflector without post or base. Used to
return the laser beam back to the Laser
Head receiving aperture on a path parallel
to the input beam, regardless of the angle
of incidence. Movement of the
retroreflector determines displacement
measurement.
LD-21R Cable Set: Connects the Laser
Head to the P311 Processor Module.