Bi Concave Lens

The double concave lenses with the negative focal length, these lenses are used
in Beam Expanders, optics image, laser system and so on.
Sunday — Bi Concave Lens Specifications
Structure: Bi Concave Lens
Material: Optical glass, UVFS, Germanium, Silicon, CaF2, MgF2, ZnSe ZnS,
Sapphire
Diameters Available: 0.5mm to 600mm
Diameter Tolerance: +0.00/-0.01mm or customer design
Surface Quality: 10-5
Surface Irregularity: λ/10 PV @632.8nm or customer design
Thickness tolerance: +0/-0.01mm
Clear Aperture: >90% of Diameter
Chamfer: 0.05-0.5mmx45degree
Centeration: <10 arcsec
Coating: Single Mag2, Multiple Layers AR Coating
A: 350-650nm
B: 650-1050nm
C: 1050-1585nm
D: Customer Design

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