Scan Heads
QS-30 Open Frame 2-Axis Scan Head
For fast, accurate beam steering in XY applications
Open Frame Head 2-Axis Scan Heads are used for fast and accurate beam steering in XY applications and are often selected where there is no desire to employ a scan lens to focus the beam to a small spot.
- Recommended apertures20mm, 30mm & 45mm
- Product familyOpen Frame 2-Axis Scan Heads

Overview
Nutfield Technology’s open frame scan heads include two galvanometers with mirrors mounted in optimized XY configuration, two servo amplifiers (require mounting to heat sink, not provided), and galvo-to-servo cable sets.
Nutfield Tech’s QS-30 XY Open Frame Scan Heads feature factory-set ±5 or ±10VDC analog inputs that produce ±22.5 degrees optical scan angles. The QS-30 OFH scan head is available in apertures ranging from 20mm to 50mm for a variety of wavelengths.
Contact Nutfield Technology for assistance with identifying a solution for your scanning application.
Key Features
Key features of the QS-30 Open Frame Scan Head:
- 20mm to 50mm aperture range
- DAC and function generator solutions available
- Available match-tuning ensures same X & Y galvo response given the same input command
- Offers a strong combination of performance and value
- XY Receiver Card available for interface with Nutfield’s WaveRunner Scan Control Software and SurfBoard or Pipeline Scan Control Hardware
Specifications
Values as published by Nutfield Technology.
Specifications for the QS-30 Open Frame Scan Head:
| Specifications: | Value |
|---|---|
| Mechanical Specifications: | QS-30 Open-Frame 2-Axis Scan Head |
| Rated Excursion (±34 max) | ±22.5 °Optical |
| Rotor Inertia | 5.1 gm-cm² |
| Torque Constant | 180,000 dyne-cm/amp |
| Electrical Specifications: | |
| Coil Resistance | 5.8 ohm |
| Coil Inductance (@ 1kHz) | 450 µh |
| Position Detector: | |
| Linearity* | >99.9% |
| Gain Drift | <100 ppm/°C |
| Offset Drift | 15 µrad |
| Repeatability | 15 µrad |
| Dynamic Performance: | |
| Step Response Time | |
| (1% of full scale, 99% settled) | |
| 20mm (Si) X-Mirror | 550 µs |
| 30mm X-Mirror | 900 µs |
| 45mm (Si) X-Mirror | 850 µs |
| Cable lengths available: | 0.43 to 0.6m |
| 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-30 Open Frame Scan Heads are ideal for the following applications:
- Microscopy
- Optical Coherence Tomography (OTC)
- Marking
Accessories
Accessories available for the QS-30 Open Frame Scan Head:
- Cables – available lengths 7” to 24” (0.0178m to 0.610m)
Downloads
Documentation for the QS-30 Open Frame Scan Head:
Need help choosing the right scanning solution?
Contact Nutfield Technology for assistance with identifying a solution for your scanning application.

