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China
Contact Person Ms. Vicky
Qiche Zone, Changchun, Jilin
A
double-concave lens is compose of two concave surface, has a
negative focal length and are best used to diverge a converging
beam. Similar to a plano-concave lens, a bi-concave lens can
diverge a collimated beam to a virtual focus like a beam
expander.
Specifications:
Materials:BK7,
Fused Silica,Ge,Si, CaF2...
Diameter:1.5—**0mm
Diameter
Tolerance:+/*0.*2 mm
Thickness
Tolerance:0+/*0.*2mm
Centring
Error<3 Arc minute
Surface
Quality:*0—*0
Clear
Aperture:*0%
Coating:
Specified by customers
More information please contact
