Cylindrical lens element

bi-concaveglass

Radius range 2.5 mm radius – ∞ Length For 2.5 mm – 5 mm radius: 1 mm – 40 mm For 5 mm – 10 mm radius: 5 mm – 100 mm For 10 mm – 1000 mm radius: 10 mm – 600 mm Width 1 mm – 2 R or 250 mm, respectively On request, round edging can be provided for cylinder lenses: 1 mm – 2 R diameter and 350 mm (max.) Tolerances Radius variance up to 1000 mm: ± 1 %, ± 5 % beyond 1000 mm,up to ± 0.01 mm radius accuracy on request (depending on geometry) Length: ± 0.1 mm Width: ± 0.1 mm Irregularity: λ/4 per 10 mm at 633 nm, reduced to λ/10 on request, optionally available with documentary proof of certification up to maximum diameter of 150 mm (depending on radius) Edge thickness variance: up to ± 0.1 mm (centration), up to 1 μ on request