QS-7 OPD Galvanometer Scanner

Excellent for Laser Marking


The QS-7 OPD QS-7 OPD Galvanometer Scanner - Nutfield TechnologyGalvanometer combines strong performance with cost-effective value. Our moving-magnet mechanical design 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. When integrated with Nutfield’s QD-4000 Servo Amplifier, the QS-7 OPD scanners deliver excellent speed and accuracy.

Nutfield Tech’s mechanical design uses low resistance/low induction coils for increased scanning speed and optimized thermal characteristics. Our OPD generates 4 times the output signal for high signal/noise ratio and outstanding accuracy.

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

Key features of the QS-7 OPD Galvanometer Scanner:

7mm and 10mm apertures
260 µs Step Response with 7mm mirror; 350 µs with 10mm mirror
Low Drift – 50ppm
High Linearity – 99.8%
High Resolution
Excellent RF Noise Immunity
Available as galvanometer, single-axis scanner,or XY scan set, open-frame head, and packaged head

Specifications for the QS-7 OPD Galvanometer Scanner:

Rotor Inertia0.1736 gm-cm²
Torque Constant40,000 dyne-cm
Coil Resistance1.3 ohm
Coil Inductance (@ 1kHz)76 µh
Weight (without cable)36 g
Inertial Load:
Recommended0.17 gm-cm²
Maximum0.85 gm-cm²
Position Detector:
Linearity*>99.8% @ ±20°
Gain Driftup to 50 ppm/°C
(3 sigma)
Offset Driftup to 30 µrad/°C
(3 sigma)
Repeatabilityup to 10 µrad
(3 sigma)
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)
7mm X Mirror260 µs
10mm X Mirror350 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 @ ambient condition. Specifications subject to change without notice.

Specifications subject to change without notice.

Nutfield’s QS-7 OPD Galvos support the following applications:

  • Marking
  • Imaging
  • Micromachining
  • Microscopy

Accessories available for the QS-7 OPD Galvanometer Scanner:

Documentation for the QS-7 OPD Galvanometer Scanner:


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