Piezo LEGS® Goniometric Precision Stages

Motion, perfected.

Sub-arcsecond tilt about a 70.5 mm or 95.5 mm virtual rotation centre.

70.5 / 95.5 mm

CENTER HEIGHT

0.2 arcsec

Encoder resolution

±1°

Angular travel

A precision stage built for stable, repeatable positioning

The goniometric family provides ±1° tilt about a defined virtual centre. Both models offer 0.2 arcsecond resolution; the customer selects a 70.5 mm or 95.5 mm rotation-centre height to match the instrument geometry.

Piezo LEGS® Goniometric Precision Stages

Key benefits

70.5 or 95.5 mm rotation-centre height
±1° angular travel
0.2 arcsec resolution
±0.2 arcsec repeatability
2.4 or 3.6°/s maximum speed
2 kg load capacity

Where this stage fits

The goniometric family uses one landing page for two virtual rotation-centre heights. The customer selects the model whose 70.5 mm or 95.5 mm centre best matches the optical axis, sample point or measurement point in the instrument.

Why Piezo LEGS® direct drive

The defined virtual rotation centre allows angular alignment with less unwanted translation at the point of interest than a simple base-mounted pivot. Direct Piezo LEGS® actuation avoids geared backlash, while the optical scale provides 0.2 arcsecond resolution for closed-loop tilt correction.

Small movement. Big impact.

When precision defines performance, every movement matters. Piezo LEGS® technology delivers direct, controlled motion without the complexity of conventional transmission mechanisms.

PRECISION

0.2 arcsec resolution for demanding tilt alignment.

STABILITY

Maintain fine tilt without continuous motor power.

GEOMETRY

Two virtual rotation-centre heights for integration.

Built to move innovation forward.

From advanced optics to analytical instrumentation, precise motion enables better-performing systems.

ALIGN

Set optical axes and beamline components.

TILT

Orient mirrors, crystals and samples.

MEASURE

Support diffraction and angular metrology.

HOLD

Maintain sub-arcsecond tilt at the point of interest.

One family. Precision across every move.

Typical applications

Beamline and optical-axis alignment
Mirror, prism and crystal orientation
Detector and sample tilt adjustment
Diffraction and spectroscopy instruments
Precision angular metrology

What this enables

Rotate an optical component about a virtual centre located 70.5 mm above the stage surface.
Align a crystal, detector or sample without introducing the translation associated with simple pivot mechanisms.
Apply repeatable fine tilt corrections in optical, X-ray or analytical instruments.
Rotate an optical component about a virtual centre located 95.5 mm above the stage surface.

Find your fit.

Choose LRGS-705-20-2-C-E40 for a 70.5 mm rotation-centre height and up to 3.6°/s. Choose LRGS-955-20-2-C-E40 for a 95.5 mm centre and up to 2.4°/s. Angular travel, resolution, repeatability and load capacity are otherwise shared.

Technical specifications

Model	Motion range	Stall force	Load	Max speed	Weight
LRGS-705-20-2-C-E40	±1° (2° total)	20 N actuator stall force	2 kg	3.6°/s	650 g
LRGS-955-20-2-C-E40	±1° (2° total)	20 N actuator stall force	2 kg	2.4°/s	650 g

Shared platform specifications

Specification	Family specification
Encoder resolution	0.2 arcsec
Positioning repeatability	±0.2 arcsec
Body material	Aluminium
Recommended controller	PMSD401
Stage cable	CKS-20, 2 m; inclusion quantity to be confirmed