China Custom Made Plano Concave Lens Double Concave Lens Optical Glass, Find details about China Plano Concave Lens, Double Concave Lens from Custom Made Plano Concave Lens Double Concave Lens Optical Glass
Diameter range | 1.5mm to 700mm |
Tolerance | +/-0.02mm |
Thickness tolerance | +/-0.03mm |
Focal length tolerance | 1% |
Surface quality | 40-20 or better |
Surface irregularity | Lambda/4 or better |
Chamfer | Protective chamfer |
Coating | anti-reflective coating for visible, UV and infrared wavelength or No AR coating |
Substrate | N-BK7,Fused silica, JGS1, corning 7980, N-BAK4, N-SF11,silicon, sapphire, etc. |