Fiber laser cutting machine - laser protective lens
Laser protective lenses, also known as laser window lenses, laser window lenses, etc., are mainly used in laser equipment and can be divided into YAG fiber laser protective lenses and CO2 laser protective lenses (zinc selenide protective lenses). Ruicheng Optoelectronics exclusively launches YAG fiber laser protective lenses that can withstand 21000W laser power and zinc selenide protective lenses that have comparable performance to imported CO2 laser protective lenses.
The importance of laser protective lenses in laser equipment:
At present, almost all laser equipment includes fiber laser heads or cutting heads, which are composed of focusing lenses and laser protective lenses. The main function of the latter is designed to protect the focusing lenses from damage. The reason is that the focusing lenses are relatively expensive and not easy to replace. When laser equipment processes materials, a large amount of slag, gas, and splashes will be released. Using protective lenses can protect the focusing lenses from damage during operation. Of course, it can also be used for laser welding, marking, welding, engraving and other laser equipment. At present, the quality of protective lenses produced by major manufacturers in the market varies greatly, and prices also differ greatly. There is even a phenomenon of using K9 material to impersonate quartz, importing quartz, etc. to pass off inferior products as good. If low-quality products are chosen, it will not only lead to high laser loss, frequent replacement, but also the serious consequence of lens rupture and damage to the focusing lens, causing serious losses to the enterprise. Therefore, choosing suitable laser protective lenses is a work that must be taken seriously.
Key points for selecting laser protective lenses:
1. Matching of external dimensions;
2. Material. Customers should choose the appropriate material according to different laser powers. Based on feedback from Ruicheng Optoelectronics customers, it is recommended to avoid using lenses made of K9 material and instead opt for quartz or imported quartz material.
3. Coating process. If one side is coated, the transmittance is usually around 98%, and for lenses coated on both sides, the transmittance should be above 99%.
4. Thickness: Generally, when the thickness is low, the laser transmittance is higher. But sometimes in order to prevent the gas pressure sprayed by the cutting machine from damaging the lens, a thicker thickness must be selected.
Ruicheng Optoelectronics suggests that everyone buy laser protective lenses made of quartz material, double-sided coating, and moderate thickness.
Although the protective lens of a laser cutting machine is a vulnerable part, in order to improve its utilization and reduce production costs, it can be cleaned regularly to achieve the purpose of reuse. During the installation and cleaning process of the protective lens, any sticky material, even oil droplets printed on the finger nail, will increase the absorption rate of the lens and reduce its service life. Therefore, the cleaning work of the lens cannot be ignored:
1. Wear gloves during installation and do not leave fingerprints;
2. Do not scratch the surface of the lens;
3. When taking out the mirror, hold the edge of the lens and do not touch the surface facial mask layer;
In terms of material selection, the laser protection lenses produced by Ruicheng Optoelectronics directly abandon K9 glass and use quartz or imported quartz, which can withstand a maximum laser power of 21000W and have much higher quality than other manufacturers in the same industry. The lenses are coated with high damage threshold anti reflective films on both sides, with a transmittance of 99.9%, and have the characteristics of high temperature resistance, good transmittance, and low laser loss.
The importance of laser protective lenses in laser equipment:
At present, almost all laser equipment includes fiber laser heads or cutting heads, which are composed of focusing lenses and laser protective lenses. The main function of the latter is designed to protect the focusing lenses from damage. The reason is that the focusing lenses are relatively expensive and not easy to replace. When laser equipment processes materials, a large amount of slag, gas, and splashes will be released. Using protective lenses can protect the focusing lenses from damage during operation. Of course, it can also be used for laser welding, marking, welding, engraving and other laser equipment. At present, the quality of protective lenses produced by major manufacturers in the market varies greatly, and prices also differ greatly. There is even a phenomenon of using K9 material to impersonate quartz, importing quartz, etc. to pass off inferior products as good. If low-quality products are chosen, it will not only lead to high laser loss, frequent replacement, but also the serious consequence of lens rupture and damage to the focusing lens, causing serious losses to the enterprise. Therefore, choosing suitable laser protective lenses is a work that must be taken seriously.
Key points for selecting laser protective lenses:
1. Matching of external dimensions;
2. Material. Customers should choose the appropriate material according to different laser powers. Based on feedback from Ruicheng Optoelectronics customers, it is recommended to avoid using lenses made of K9 material and instead opt for quartz or imported quartz material.
3. Coating process. If one side is coated, the transmittance is usually around 98%, and for lenses coated on both sides, the transmittance should be above 99%.
4. Thickness: Generally, when the thickness is low, the laser transmittance is higher. But sometimes in order to prevent the gas pressure sprayed by the cutting machine from damaging the lens, a thicker thickness must be selected.
Ruicheng Optoelectronics suggests that everyone buy laser protective lenses made of quartz material, double-sided coating, and moderate thickness.
Although the protective lens of a laser cutting machine is a vulnerable part, in order to improve its utilization and reduce production costs, it can be cleaned regularly to achieve the purpose of reuse. During the installation and cleaning process of the protective lens, any sticky material, even oil droplets printed on the finger nail, will increase the absorption rate of the lens and reduce its service life. Therefore, the cleaning work of the lens cannot be ignored:
1. Wear gloves during installation and do not leave fingerprints;
2. Do not scratch the surface of the lens;
3. When taking out the mirror, hold the edge of the lens and do not touch the surface facial mask layer;
In terms of material selection, the laser protection lenses produced by Ruicheng Optoelectronics directly abandon K9 glass and use quartz or imported quartz, which can withstand a maximum laser power of 21000W and have much higher quality than other manufacturers in the same industry. The lenses are coated with high damage threshold anti reflective films on both sides, with a transmittance of 99.9%, and have the characteristics of high temperature resistance, good transmittance, and low laser loss.