Zinc selenide ZnSe biconvex lens

Calcium fluoride Caf2 biconvex lens
  • Zinc selenide (ZnSe) lens has low absorption coefficient and high thermal expansion coefficient. It is usually used as the base material of reflector and beam splitter in high-power CO2 laser system.
  • As the zinc selenide (ZnSe) lens is relatively soft (Knoop hardness is 120) and easy to scratch, it is not recommended to be used in harsh environment. Pay attention to uniform force when holding and cleaning, so that you could wear finger covers or hands.
Technical parameters
Items Parameters
Material zinc selenide (ZnSe)
Radius of curvature ± 1mm - ± 50000mm ± 1%
Diameter 3mm-200mm ± 0.1mm
Center thickness tolerance ± 0.1mm
Center deviation 3′(we can process to 30 ″with high precision)
Surface accuracy λ/ 4
Surface quality 60/40
Effective caliber ≥80%
Coating IR AR Coating 8-12μm or according to custom requirements
spectral curve

In addition, we have thousands of stock of K9 plano convex lens, biconvex lens, plano concave lens, biconvex lens, meniscus lens and so on. The price is preferential and the quality is excellent, which can meet your demand for a small order. 

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