Product Details
The traditional manual method is adopted to process the lager diameter paraboloid and hyperboloid 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. We are Coaxial Lenses Combination Factory.
Material | BK7, ZK N4 ,Zerodur ect. |
Diameter tolerance | +0.0/-0.15mm |
Diameter | ≤900mm |
Aspherical surface | Paraboloid, Hyperboloid |
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 |
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