bi concave spherical lens

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Diameter:2mm to 500mm

Diameter Tolerance:+0.00/-0.1 or customer size

Material:N-BK7,H-K9L,Sapphire,Fused Silica(JGS1),Caf2,ZnSe,Si,Ge,etc.

Surface Quality:80-50 to 10/5

Flatness:1 lambda to 1/10 lambda

Thickness Tolerance:+0.00/-0.05mm

Focal Length Tolerance:+/-1%

Clear Aperture:>90% of diameter

Centration:<3arcmin

Coating:Single Mag2, Multiple Layers AR coating

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