The double concave lenses with the negative focal length, these lenses are used in Beam Expanders, optics image, laser system and so on.
Product Details
The double concave lenses with the negative focal length, these lenses are used in Beam Expanders, optics image, laser system and so on.
| Structure | Bi Concave Lens |
| Material | Optical glass, UVFS, Germanium, Silicon, CaF2, MgF2, ZnSe ZnS, Sapphire |
| Diameters Available | 0.35mm to 600mm |
| Diameter Tolerance | +0.00/-0.02mm or customer design |
| Surface Quality | 10-5 |
| Surface Irregularity | λ/10 @632.8nm or customer design |
| Thickness tolerance | +0/-0.02mm |
| Clear Aperture | >90% of Diameter |
| Chamfer | 0.05-0.5mmx45degree, according to customer's needs. |
| Centeration | 3 arcmin |
| Coating | Single Mag2, Multiple Layers AR Coating A: 350-650nm B: 650-1050nm C: 1050-1585nm D: Customer Design |
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