20mm Diameter ZnSe Focal Lens for CO2 Laser Cutter Engraver FL 50.8mm

Specification Model DN20FL50 8Material ZnSeDiameter 20mmFocal Length 50 8mmEdge Thinckness 2 2mmAperture 90 of the DiameterTolerance of Thickness 0 25mmTolerance of Diameter 0 0 13mmEffective Focal Length 2 Anti Reflective Coating at 10 6 mSurface Quality 40 20Surface Figure at 0 63 m 2 per 1 inch DiaCoating Transmittivity Per surface at 10 6 m 99 50 Features ZnSe is used for optical windows lenses mirrors prisms and optical blanks plates disks sheets slabs particularly for infrared applications Zinc Selenide ZnSe is transparent in wide spectral range from yellow visible to far IR ZnSe material is a chemically inert non hygroscopic and highly pure product that is very effective in many optical applications due to its extremely low bulk losses high resistance to thermal shock and stability in virtually all environments easily machined To obtain superior transmittance ZnSe crystals are grown by Chemical Vapor Deposition process Zinc Selenide is polycrystalline material demonstrates superior CO2 laser transmittance and is employed in the transmission optical components used in CO2 laser processing Package Included 1DN20FL50 8 ZnSe Focus LensMore Details