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Knowledge and composition of fiber laser galvanometer

2021-11-11 18:09:54

The high-speed scanning galvanometer is a kind of scanning galvanometer used in the laser industry. It can also be called an ammeter. Its planning idea completely follows the planning method of the ammeter. The lens replaces the needle, and the signal of the probe is controlled by the computer-5V —5V or -10V-+10V DC signal instead, to complete the scheduled action.

Like the rotating mirror scanning system, this typical control system uses a pair of reentrant mirrors. The difference is that the stepping motor that drives the lens is replaced by a servo motor. In this control system, the orientation sensor The planning idea of ​​using and negative feedback loop has further ensured the accuracy of the system, and the scanning speed and repeat positioning accuracy of the whole system have reached a new level.

Customized galvo laser head manufacturer

Whether scanning laser systems are used for marking, carving, or drilling of micropipettes, they all rely on galvanometers to accurately position the laser beam.

Composition principle of galvanometer scanning:  

The galvanometer scanning marking head is mainly composed of XY scanning mirror, field lens, galvanometer and computer-controlled marking software. Choose the corresponding optical components according to the different laser wavelength. Related options also include laser beam expanders, lasers, etc.

The working principle is to incident the laser beam on two mirrors (scanning mirrors), and use the computer to control the reflection point of the mirrors. The two mirrors can scan along the X and Y axes separately, and then reach the deflection of the laser beam, The laser focusing point of a certain power density moves on the marking material according to the required request, and then leaves a lasting symbol on the surface of the material. The focused spot can be a circle or a rectangle.

Fiber laser galvo mirrors manufacturer

Galvanometer scanning marking can be used for vector marking and dot-matrix marking because of its wide range of use. The scale of symbols is adjustable, and it has fast response speed and high marking speed (can mark hundreds of characters per second) , The advantages of high marking quality, good light path sealing performance, and strong adaptability to the environment have become mainstream products, and are considered to represent the development direction of laser marking in the future, with a broad prospect of use.