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QS-5 OPD Galvanometer Scanner

Perfect for Hand-Held Scanning


QS-5 OPD Galvanometer Scanner - Nutfield TechnologyNutfield Tech’s QS-5 OPD Galvanometer brings high performance in a compact space. Our moving magnet scanners have a mechanical design that incorporates our exclusive ceramic ball-bearing motors that are combined with our high output position detectors. Patented low inertia optical detectors achieve dynamic performance with faster, more accurate positioning. The QS-5 features a recommended aperture of 3mm or 5mm. Minimum rotor inertia provides increased bandwidth and speed for stable, reliable performance.

When integrated with Nutfield’s QD-4000 Servo Amplifier, the QS-5 OPD galvanometer scanners deliver accuracy and speed in the palm of your hand.

Contact Nutfield Technology for assistance with identifying a solution for your scanning application.

Key features of the QS-5 OPD Galvanometer Scanner:

  • 3mm and 5mm apertures
  • 180 µs Step Response with 3mm aperture mirror; 220 µs with 5 mm aperture mirror
  • Lightweight, smaller and faster than standard galvos
  • Low drift – 50ppm
  • High Linearity – 99.8%
  • High Resolution
  • Excellent RF noise immunity
  • Available as galvanometer or single-axis scanner


Specifications for the QS-5 OPD Galvanometer Scanner:

Rotor Inertia0.184 gm-cm²
Torque Constant20,000 dyne-cm
Coil Resistance2.4 ohm
Coil Inductance (@ 1kHz)46 µh
Weight (without cable)22.6 g
Inertial Load:
Recommended0.012 gm-cm²
Maximum0.05 gm-cm²
Position Detector:
Linearity*>99.8% @ ±20°
Gain Drift50 ppm/°C
Offset Drift15 µrad/°C
Repeatability10 µrad
Typical output signal
differential mode14.5 µA/°
common mode151 µA
Supply current15 - 20 mA
* For larger angles, contact Nutfield Tech.
Dynamic Performance:
Step Response Time
(1% of full scale, 99% settled)
3mm X Mirror180 µs
5mm X Mirror220 µs
Cable lengths available:7" to 24" (0.18m to 0.61m)
Storage Temperature:10 to 50°C
Operating Temperature:0 to 40°C noncondensing
All specifications are using Nutfield Tech's QD-4000 Servo Amplifier.

Specifications subject to change without notice.

Nutfield’s QS-5 OPD Galvos support the following applications:

  • Optical Coherence Tomography (OTC)
  • Biomedical Imaging
  • Imaging
  • Microscopy
  • High Speed Scanning
  • High Speed Marking and Coding
  • Laser Light Show and Projection

Accessories available for the QS-5 OPD Galvanometer Scanner:

Documentation for the QS-5 OPD Galvanometer Scanner:


U.S. patents apply to this product. For details, visit our Virtual Patent Marking page.