Optical glass 10.6 μm High quality Zinc Selenide Plano-Concave Lenses

Zinc Selenide (ZnSe) Plano-Concave Lenses are available with a broadband AR coating optimized for the 4.5 - 7.5 μm spectral range deposited on both surfaces. This coating greatly reduces the high surface reflectivity of the substrate, yielding an average transmission in excess of 97% over the entire AR coating range. See the Graphs tab for detailed information.

Like all plano-concave lenses, these lenses have negative focal lengths and can be used to diverge collimated beams; in this case, the curved surface should face the source in order to minimize spherical aberration. In addition, they can be employed to offset the effects of spherical aberration caused by other lenses in an optical system. ZnSe lenses are particularly well suited for use with high-power CO or CO2 lasers. Additionally, they may provide enough transmission in the visible region to allow the use of a visible alignment beam, although back reflections may be more pronounced.

When handling optics, one should always wear gloves. This is especially true when working with zinc selenide, as it is a hazardous material. For your safety, please follow all proper precautions, including wearing gloves when handling these lenses and thoroughly washing your hands afterward. Due to the low hardness of ZnSe, additional care should be taken to not damage these lenses. Click here to download a pdf of the MSDS for ZnSe.

Map optics technology provides uncoated, coated anti - reflection film of Plano-Concave Lenses sheet.
Anti-reflection membrane options include UV, VIS, NIR, and SWIR.
Germanium, silicon, or zinc selenide substrates are suitable for infrared applications, while fused quartz is suitable for uv applications.