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Optical Glass Plano concave lens,bi concave lens, double concave lens

PCL

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Description

Structure: Concave lens
? Substrate Material: optical glass,quartz,pyrex,sapphire,znse,caf2,ge,si,etc.
? Diameters Available: 2mm to 550mm
? Diameter Tolerance: +0.00/-0.05mm or customer design
? Surface Quality: 80-50,60-40,40-20,20-10,10-5
? Surface Flatness: 1/4lambda or customer design
? Surface Irregularity (Peak to Valley): λ/2 or customer design
? Thickness tolerance: +0.00/-0.05mm
? Focal length tolerance: +/-1%
? Clear Aperture: >90% of Diameter
? Chamfer: 0.05-0.5mmx45degree
? Centration: 3 arcmin
? Coating: AR,Mgf2 are on request

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