Meniscus Lenses
Positive meniscus lenses is convex-concave lens thicker at the center than at the edges.
Negative meniscus lenses is convex-concave lens thinner at the center than edges.
Meniscus Lenses
Positive meniscus lenses is convex-concave lens thicker at the center than at the edges.
Negative meniscus lenses is convex-concave lens thinner at the center than edges.
Two different radius are in everyone surface. Two surface are both so that.
Single lens with both surfaces are complex surface.Or two surfaces of the lens with composite concentric annular …
Material:BK7
Size:10mm-200mm
Fringes:λ/2,λ/4
Center Thickness Tolerance:15mm~25mm
Dispersion Round :0.03mm—0.2mm
Centration:3 arc min
Surface Quality:60—40scratch and dig,80—50scratch and dig
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