Double concave lens

Detailed Product Description

  Double concave lens

Detailed Product Description

We make lenses with diameter from 1.0mm to 300mm by optical glass or optical crystals, such as BK7, fused silica, CaF2.

Our standard lens has the following specifications:
Material: grade A BK7, fused silica, sapphire, or CaF2
Diameter tolerance: +0.0, -0.12mm
Paraxial focal length tolerance: ±2%
Centralization: 3arcmin
Clear aperture: >85%
Surface figure: 1/2 at 632.8nm

Surface quality: 60/40 scratch/dig
Bevel: 0.25mm x 45°
Coating: uncoated or coated upon requests

We supply standard lens (please visit our website for standard lenses) and customized
or OEM lenses upon customers' requests.