The engraving laser head is an electronic device that generates high-energy blue laser and is used to finely engrave patterns and text on the surfaces of various materials. The laser engraving heads used in personal DIY or light industrial production are all semiconductor lasers. Compared with other lasers, semiconductor lasers have the advantages of high energy efficiency, low power consumption, fast switching and modulation. The engraving laser head has the advantages of compact size, high flexibility, strong material adaptability, and high economy. It also has the disadvantages of low laser power and short service life.
Advantages of Engraving Laser Head
1. Compact structure and size
The 40W engraving laser head is 127 mm long, 68 mm wide, and 78 mm high. It has small structural size, compact design, and light weight of only 408g. It can be used as an important light source for desktop DIY engraving machines.
2. High flexibility
The engraving laser head adopts a modular design with the same design, and is controlled by PWM signals. The performance upgrade of the DIY engraving machine can be achieved by replacing a higher engraving laser head, which has a high degree of freedom and flexibility in DIY design. In addition to being used for laser engraving, the engraving laser head is also suitable for laser cutting. The 40W optical power engraving laser head can instantly cut 15 mm hardwood boards, and can cut some handmade puzzles, window grilles, etc.
3. Material adaptability
The engraving laser head uses a high-power blue laser, which is widely used for engraving metals, non-metals, paper, wood boards, leather, food, minerals, stones, leaves, plastics, glass and other materials. For metal engraving, blue light lasers have stronger adaptability. Various metals have high absorption rates for blue light wavelengths. The absorption rate of blue light for metal copper is as high as 65% or more. This also means that metal can be carved using smaller laser power. copper.
4. High economy
The electro-optical conversion efficiency of the engraving laser head is high, exceeding 50%. It only needs a 5V or 12V DC interface power supply to light up. It is very economical. The electrical power usually does not exceed one hundred watts, which is equivalent to the electrical power of headlights for lighting purposes. . The maintenance cost is quite low. When the service life is reached, you only need to replace the laser diode inside, which can extend the service life indefinitely.
Disadvantages of Engraving Laser Head
1. Laser power is small
For engraving laser heads that use semiconductor lasers as the main light source, the common laser power is between 10 watts and 40 watts, which is far smaller than industrial fiber lasers (kilowatt-level optical power), but low power is perfect for personal DIY or light industrial processing. purpose, and its small size can make up for this shortcoming.
2. Short service life
The service life of the engraving laser head depends on the semiconductor laser (also called a laser diode). The designed service life of the laser diode is 10,000 hours (continuous use). This is calculated based on the initial drop in the generated optical power. It is not a scrapped service life. The same is true for the same life. Depending on the environment used, the service life is shorter than other types of lasers.
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