Galvo scanners are high-speed beam deflection systems widely used in laser marking, engraving, cutting, and micro-processing applications. By rapidly moving mirrors with precision motors, galvo scanners can direct laser beams with extreme accuracy and speed onto different materials. In laser systems, choosing between 2D and 3D galvo scanners depends on your application needs — from flat surface marking to complex 3D curved engraving.
Key Functionalities of Galvo Scanners
Black Marking
Galvo scanners enable deep black laser marking with high precision. This function is ideal for creating permanent, high-contrast marks on metals such as stainless steel, used widely in medical and electronics industries.
Color Marking
Using MOPA fiber lasers combined with galvo heads, users can perform multi-color marking on stainless steel surfaces. Precise control of pulse width and frequency via galvo control ensures vivid and consistent coloration.
3D Deep Engraving and Inner Carving
3D galvo scanners allow for depth control and dynamic focus adjustment, which enables laser inner carving, deep engraving, and complex geometry marking across varying heights. This is perfect for mold manufacturing, jewelry, and high-end branding applications.
Curved Surface Marking
Unlike 2D systems that only work on flat planes, 3D galvo scanners support curved or uneven surfaces without loss of clarity or focus. This eliminates the need for mechanical adjustments or repositioning during marking.
Vision-assisted Positioning
Some galvo systems support built-in or external cameras, providing visual alignment and real-time correction. This enhances accuracy, especially in high-precision industries like semiconductors and electronics.
High-speed and Non-contact Processing
Galvo scanners operate with non-contact laser delivery, offering fast speed and minimizing material deformation. This makes them ideal for mass production lines where speed, repeatability, and accuracy are critical.
Application Scenarios
Consumer Electronics: Marking of keyboards, phone frames, ICs
Automotive: VIN code marking, switch panels, metal engraving
Jewelry & Gifts: Intricate carving, 3D logo engraving, colored text
Medical Devices: UDI marking, black mark on stainless steel tools
Mold & Die Industry: Deep engraving, cavity inner carving
Plastic and Packaging: Surface marking without damaging inner layers
Why Choose a 3D Galvo Scanner Over a 2D?
Z-Axis Control: 3D scanners can dynamically change focal lengths to match object contours
More Flexibility: No need for precise fixture or material leveling
Better Quality: Maintains focus and beam quality across variable-height surfaces
Efficiency: Reduces manual handling and improves production throughput
Final Thoughts
Galvo scanner systems—especially with 3D functionality—are redefining what’s possible in high-precision laser processing. Whether you need speed, versatility, or advanced capabilities like color marking and inner engraving, galvo scanners provide a future-proof solution for both 2D and 3D laser applications.
Ready to Upgrade?
If your production requires high-speed, precision laser marking on flat or curved surfaces, galvo scanner systems are your ideal solution. Contact us to get personalized recommendations or request a live demo of our 2D and 3D galvo solutions.
