Zinc selenide ZnSe plano concave lens

plano convex lens
  • Zinc selenide optical lens is a kind of optical lens with low absorptivity, which can prolong the service life in laser cutting applications. These low-cost lenses are very suitable for welding, cutting and heat treatment. They have excellent thermal characteristics and can prevent the thermal runaway of high-power CO2 laser.
  • However, zinc selenide (ZnSe) is relatively soft (Knoop hardness 120) and easy to scratch, so it is not recommended to use in harsh environments. When holding and cleaning, pay attention to uniform force, so as to wear finger covers or gloves.
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. For details, please consult:

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