# Parabolic Mirror

Share:
Product Details

The traditional manual method is adopted to process the lager diameter parabolic and hyperbolic lens with BK7 (ZK N4 or Zerodur) material, use knife-edge instrument for test, with high processing accuracy, and the diameter can be within 900mm.surface accuracy could be less than 1/40 lambda.

 Material BK7, ZK N4 ,Zerodur ect. Diameter tolerance +0.0/-0.15mm Diameter ≤900mm Aspherical surface Parabolic, Hyperbolic Focal length tolerance ±2% Clear aperture ≥90% RMS Irregularity 1/40λ Surface Quality 60-40 Bevel 0.25 mm × 45° Coating Metal reflection coating/Dielectric reflection coating