Plano concave lens has a negative focal length and is typically used to cause a collimated beam to diverge as in a Galilean type beam expander or telescope. Because the srical aberration of the Plano-Concave is negative, it can be used to balance the aberration of other lenses. This PCV lens is widely use in optical display systems, projection optics systems, imaging and laser measurement systems.
| 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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