Galvanometer Scanners
QS-5 OPD Galvanometer Scanner
Strong performance in hand-held scanning
The QS-5 OPD moving-magnet galvanometers bring high performance in a compact space. Our 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-5 OPD scanners deliver accuracy and speed in the palm of your hand.
- Recommended apertures3mm, 5mm
- Product familyOptical Position Detector Galvos

Overview
Contact Nutfield Technology for assistance with identifying a solution for your scanning application.
Key Features
Key features of the QS-5 OPD Galvanometer Scanner:
- 3mm and 5mm apertures
- 180 µs Step Response with 3mm aperture mirror; 220 µs with 5mm 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
Values as published by Nutfield Technology.
Specifications for the QS-5 OPD Galvanometer Scanner:
| Specifications: | Value |
|---|---|
| Standard Specifications: | QS-5 OPD Galvanometer Scanner |
| Rotor Inertia | 0.120 gm-cm² |
| Torque Constant | 12,000 dyne-cm |
| Coil Resistance | 2.4 ohm |
| Coil Inductance (@ 1kHz) | 46 µh |
| Weight (without cable) | 22.6 g |
| Inertial Load: | |
| Recommended | 0.012 gm-cm² |
| Maximum | 0.05 gm-cm² |
| Position Detector: | |
| Linearity* | >99.8% @ ±20° |
| Gain Drift | 50 ppm/°C |
| Offset Drift | 15 µrad/°C |
| Repeatability | 10 µrad |
| Typical output signal | |
| differential mode | 14.5 µA/° |
| common mode | 151 µA |
| Supply current | 15 – 20 mA |
| * For larger angles, contact Nutfield Tech. | |
| Dynamic Performance: | |
| Step Response Time | |
| (1% of full scale, 99% settled) | |
| 3mm X Mirror | 180 µs |
| 5mm X Mirror | 220 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. |
Applications
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
Accessories available for the QS-5 OPD Galvanometer Scanner:
- Cables – available lengths 7″ to 24″ (0.0178m to 0.610m)
- QD-4000 Servo Amplifier
Downloads
Documentation for the QS-5 OPD Galvanometer Scanner:
- Nutfield Technology’s OPD Galvanometer Scanners Data Sheet
U.S. patents apply to this product. For details, visit our Virtual Patent Marking page.
Need help choosing the right scanning solution?
Contact Nutfield Technology for assistance with identifying a solution for your scanning application.


