Biconcave lens, is used to divergent light. The double concave lens is best used when the input beam is converging. It is used in beam expanders, projection optics systems, optical viewers and optical character readers etc.
| Material:Surface Flatness:Scratch/Dig:Eccentricity:Focal Length ToleranceDiameter Tolerance:Thickness Tolerance:Clear Aperture:Coating:Diameter Range: | Optical Glass< λ/5 @ 633nm< 40/20 (both sides)≤ 1arcmin< ± 1%< + 0.00/ - 0.10mm< ± 0.1≥ 90% of diameterAR OR BBAR5~260mm |
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