LDS Series LDS Series LDS Series LDS Series

Model LDS-3000 Laser Doppler Scale

LASER SCALE FOR POSITIONING APPLICATIONS

Precision Positioning machines for IBM PC Compatibles

FEATURES

Descri p tion

p osition error suppliers of connector on the top o f The LDS-3000 Series Laser PCPositioning Systems provide high speed, high resolution and high accuracy; the board. This parallel output can also ? Inherent high accuracy and high resolution. b e used to close the positioning loop i n a servo control system. An additional board (P-501) is available that does not provide the closed loop capability, but can be used for applications where only the displacement is to be read over the PC mother board. p ositioning for single or multiple axisapplications, using an IBM compatiblePC as the controller. The system is idealfor applications such as Precision Coordinate tables, Servo Stages, Servo Trac ? No need fear periodic calibration. ? Non-contact devices eliminate wear. k ? Orthogonality of positioningsystem determined by mirrors not X-Y stages when using aflat-mirror target. Writers, and Linear Professional measuring devices. The LDS3000 is compact, easy to install, and cost effective. A PC compatibleplug-in board is provided for direc t ? No mounting stress on scale. interface to an IBM compatible PC. The Model IPP32 PC Board is a plug-in ? No thermal expansion on scale.

System Components

L-109 Laser Head -HeNe Laser Head, ruggedized for direct installation i ? No need for machined flat surface for mounting scale saving installation costs. n b oard, which occupies one full sized slot on the PC ISA Bus. The board digitizes the output of an Optodyne Laser Doppler Displacement Meter and provides a 32-bit parallel target position in units of 1/256, or 1/128, or about 0.1 microinches (2.5 nanometers). The 32 bit position data may be read over the PC backplane and/or output to the center tool and other positioning applications. Contains HeNe Tube, Optics a Photodetector Receiver, and electronics. ? Higher loop gain possible for closed loop servo control. ? Optional hermetic seals for hostile R-102A Retroreflector - 1/2" diamete r ? environments. retroreflector without post or base. Used to return the laser beam back to the Laser Head receiving aperture on a p ath parallel to the input beam, regardless of the angle of incidence. Movement of the retroreflecto r determines dis p lacement measurement.