Understanding Scan Head and Galvo Technology in Laser Engraving

What Is a Scan Head?

A scan head is a critical component in a laser engraving system, responsible for directing the laser beam accurately over the target surface. It consists of mirrors, galvanometers, and lenses that control the beam's position at high speed, ensuring precise marking or engraving.

Galvo and Laser Galvo Explained

Galvo, short for galvanometer scanner, is the motor system inside the scan head that moves mirrors to direct the laser beam. When we talk about laser galvo, we refer to a system where a galvo controls the laser for fast, precise scanning.

Key features:

• High-speed marking: Galvo systems can scan thousands of points per second.

• Precision: Accurate positioning ensures sharp text, logos, and complex patterns.

• Versatility: Works on metals, plastics, glass, and other materials.

Applications of a Galvo Laser Engraver

A galvo laser engraver combines a laser source with a galvo-driven scan head for high-speed and high-precision marking. Typical applications include:

• Industrial marking: Serial numbers, QR codes, barcodes on metal parts

• Decorative engraving: Logos, patterns on promotional items, jewelry, or electronics

• PCB and electronic components: High-precision marking of circuits and labels

• 3D surface marking: When combined with advanced software, galvo systems can engrave on curved or uneven surfaces

Advantages of Using Scan Head and Galvo Technology

1. Speed: Much faster than traditional mechanical XY stages.

2. Accuracy: Ensures high-resolution and repeatable marking.

3. Efficiency: Reduces production time while maintaining quality.

4. Flexibility: Supports both 2D and 3D marking on various materials.

Conclusion

Integrating a scan head with galvo technology transforms a standard laser system into a high-speed, high-precision galvo laser engraver. Whether for industrial, decorative, or electronic applications, this technology offers unmatched speed, accuracy, and versatility.