SP 5000 DI
Extremely stable laser interferometer for high-precision length or angle measurements
Our ultra-stable differential laser interferometer SP 5000 DI is characterised by its unique thermal stability and can be used for long-term measurements in research and development, such as for material testing.
Thanks to its design, with an external reference beam, the measurement system can be placed at a longer distance from the measurement location without significantly affecting the resolution or stability of the measurement. The length resolution of the interferometer is 5 pm and this can be achieved even under normal laboratory conditions thanks to the differential principle of the
measurement system.
The measurement range for length measurement is several meters if tilt-invariant reflectors are used for the measurements.The system has a modular design and can therefore be adapted to specific measurement tasks.
Further possible applications:
• The differential laser interferometer is available as an OEM version for installation as an encoder in machine axes. The SP 5000 DI is also available as a vacuum-optimised version for taking measurements in a vacuum.
• The standard beam distance is 21 mm. We can provide other beam distances on enquiry.
Ideal for
• Long-term measurements • Development • Exacting stability requirements • Science/research • OEM applications
Technical Data:
Measurement range: ≤ 2 m
Resolution: 20 pm
Beam distance (standard): 21 mm
Angular measurement range: ±1.5 arcmin
Angular resolution: 0.001 arcsec
Applications:
Differential length and angle measurement with the highest accuracy, e. g. p
ositioning systems for long-term material investigations and dilatometry
Angles and tilts are measured with the greatest accuracy by calibrating the
beam distance
Optional vacuum-compatible designs