Precision optical device
  • Spherical Lens Elements

Convex Elements Plano-Convex, Bi-Convex, Meniscus
Concave Elements Plano-Convex, Bi-Convex, Meni
External Diameter φ3.5~φ200mm
Concave Elements R1.5mm~∞
Classifications Common Grade

High Grade

Newton Rings 2 - 5 fringes 1 - 2 fringes
Astigmatism 0.5 - 1 lines 0.2 - 0.4 lines
Diameter Tolerance ±0.02mm ±0.005mm
Angular Deviation to Axis < 1 min < 30sec.
Thickness at Center ±0.03~±0.05mm ±0.01mm

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