PSI, a leading manufacturer of galvo scanners
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2-Axis Scan Heads

2-Axis optical scan heads consists of X and Y galvo scanners, driver boards, XY mount, dust proof housing, F-theta lens adaptor, positioning plate for installation, 25-pin connector, and 3-pin power supply connector. Each part carries one or more patented designs to secure that our 2-Axis optical scan heads perform at extremely high accuracy, low drift for a variety of different input apertures at various wavelengths. They offer ideal solutions for applications that requires high accuracy and extremely low drift. Typical applications include: additive manufacturing (3D printing), welding, scribing and micro structuring, etc.

Specifications PSH20 PSH30
Aperture 20mm 30mm
Tracking Error 0.28ms 0.45ms
Step Response time (1% of full scale) 0.6ms 0.9
Typical Speed
    Positioning speed (1)
    Writing Speed (1) (2)
        Good writing quality
        High writing quality

10 m/s

470 cps
400 cps


260 cps
180 cps
Effective Scan Angle (3) 10 10
Signal Interface Analog: 10 V
Digital: XY2-100 protocol
Analog: 10 V
Digital: XY2-100 protocol
Linearity 99.8 % 99.8 %
Zero Drift 2 Rad/ 2 Rad/
Repeatability 2 Rad 2 Rad
Resolution 1 Rad 1 Rad
Long Time Drift (Over 8 Hours) 20 Rad 20 Rad
Operating Temperature Range 0-50 0-50
Input Voltage Requirement(DC) 15V @ 4A Max RMS 15V @ 4A Max RMS