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
• For 30 mm – 70 mm radius: up to 3000 mm

Width

• 1 mm – 2 R or 250 mm, respectively
• Round edging can be provided for cylinder lenses: 1 mm – 2 R diameter and 350 mm (max.) on request

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

Higher precision on request.