Laser Optics

Lenses

Lenses which minimize absorption of the laser beam, which has a significant influence on processing quality, and realize high focusing performance and economy. We provide various lenses such as normal plano-convex lenses, meniscus lenses, aspherical lenses which realize high concentration, and pressure-resistant lenses used for laser processing machines.

Materials

Zinc selenide (ZnSe) is the material used most frequently because its transparency to infrared CO2 laser beams is high (absorption coefficient is small), and it transmits visible guide light.

Shapes

Aspherical lenses, plano-convex lenses, or meniscus lenses are used. The longer the focal length is, the larger and longer the spot diameter and focal depth become, respectively. Please choose a lens according to the work piece. When using high pressure gas to assist the cutting process, please choose the thickness according to the gas pressure.

F-Theta Lenses

High performance F-Theta Lenses

This lens focuses a laser beam scanned with a scanner, etc. It is used for high speed micro drilling of printed circuit boards, high-speed marking of electronic parts and resin parts, etc.

Beam Expanders

This is used to change the incident beam diameter to the lens or control beam divergence during long-distance laser beam delivery. It has two types: fixed magnification type and variable magnification (zoom) type.

Mirrors

Mirrors which have both the durability and the reliability of transmission of a high-power laser beam without decreasing its quality.

Materials

Considering for optical precision, Copper (Cu) and Silicon (Si) are used because they have superior processing characteristics for optical precision and superior heat conductance for cooling efficiency. For parts where adhesion of sputtering is intense, Molybdenum (Mo), which have material characteristics of a high melting point and high hardness, is used.

Coating

Various coatings are used on the mirror surface to secure reflectivity and improve polarization control, and improvement of durability. It is necessary to choose a type of coating according to the usage and use environment.

Parabolic Mirrors

Suitable for focusing high power laser light more than 5kW. Copper (Cu) is used mainly since it is superior in heat conductance and can be processed by ultraprecision cutting. In addition, Aluminum (Al) may be used for parts which need to be lightened. For the surface coating, Gold (Au) is used commonly because it has good reflectivity, heat conductance and durability. In addition, Molybdenum (Mo), which has a high melting point and high hardness as its material characteristics, is used for parts where adhesion back-splatters is drastic.