Description

A lens is optical element with twoeffective refractive surfaces, of which is minimum one convex or concave. Available shapes: Plano-Convex Bi-Convex Plano-Concave Bi-Concave PositiveMeniscus NegativeMeniscus Cylindrical Standard specification: Diameter: uponcustomer&#**9;s request DiameterTolerance: +/*0, 1 mm Thickness: uponcustomer&#**9;s request ThicknessTolerance: +/*0, 1 mm FocalLength: upon customer&#**9;s request FocalLength Tolerance +/- 2% Clear Aperture *0 - *0% SurfaceQuality: S/D - *0/*0 Centration: </= 5 arc min Chamfer: 0, 2mm x *5 degree or upon customer&#**9;s request Available material: BaF2 - Barium Fluoride CaF2 - Calcium Fluoride MgF2 - Magnesium Fluoride LiF2 - Lithium Fluoride ZnSe - ZinkSelinide ZnS - Zink Sulfide Ge - Germanium Si - Silicon FS - Fused Silica BK*7 - BorosilicateCrown Optical Glass Al2O3 - Sapphire YAG - Yttrium Aluminium Garnet Quartz Available coatings: AR - AntiReflection PR - Partial Reflection HR - HighReflection