One side of meniscus lens is convex, another side is concave. It can be a convergent lens or a divergent lens, which is decided together by refractive index, curvature and radius.
CLZ Manufacturing Ranges
Materials: Over 120 visible materials, Fused Silica
Sizes: 15mm to 150mm
Surface Accuracy: 1/10λ
Surface Quality: 80/50 to 10/5
Radii: 5mm to Plano, +/-.1% tolerances or better