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SP-DS Series

Product catalog summary

Overview
The SP-DS Series Double-Beam Plane-Mirror Interferometer is designed for a variety of applications, either as OEM measuring systems or standalone units. It utilizes two parallel measuring beams to independently acquire length values with high resolution and precision, allowing for the calculation of difference or angle values.

Operating Principle
The interferometer employs a single-beam measuring principle for each beam, adhering to the Abbé principle to minimize first-order measurement errors.

Major Performance Features

Simultaneous length and angle measurement with high accuracy.
Easy adjustment and handling with an alignment base.
HeNe laser provides a stable light source.
Fiber coupling of laser light and environmental influence correction.
Sensor head materials include aluminium, stainless steel, or Invar.
Compatible with measurement software for Windows and Linux.

Applications

Precision length measurement and calibration for various machines and tools.
Differential measurement for materials testing and behavior investigations.
Simultaneous length and angle measurements for machine calibration.

Technical Data

Models: SP 120 DS and SP 2000 DS
Length Measuring Range: 70 mm (SP 120 DS), 2000 mm (SP 2000 DS)
Resolution: 0.1 nm
Laser Wavelength: 632.8 nm
Frequency Stability: ≤ 3 ∙ 10^-7 (SP 120 DS), ≤ 2 ∙ 10^-8 (SP 2000 DS)
Warm-up Period: 1 min (SP 120 DS), 10-20 min (SP 2000 DS)
Beam Separation: 4 / 12.5 / 25.4 mm
Angular Measuring Range: ±1.5 arcmin
Operating Temperature Range: 15...30°C
Maximum Moving Mirror Translation Rate: 800 mm/s
Interfaces: RS232C, USB, optional digital and analog signals
Size and Mass: Varies by design and material
Laser Safety Class: 2M / II according to EN 60825-1 / ANSI Z136.1

Catalog excerpts

Double-Beam Plane-Mirror Interferometer SP-DS Series

Open the catalog to page 1

Design and Operation Double-beam plane-mirror interferometers of the SP-DS series allow a wide variety of applications as OEM measuring systems or standalone units. Two parallel measuring beams are used to acquire two length values independently of each other and with maximal resolution and precision. Difference values or angle values may be calculated from this and the factory-calibrated beam spacing. The single-beam measuring principle applied to every measuring beam allows measuring set-ups in compliance with the Abbe princple which avoids first-order measurement errors. Major Performance...

Open the catalog to page 2

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