Detailed Product Description
Biconcave Lenses
These lenses are symmetrical with equal radii on both sides. The biconcave lenses are often used to expand light beams or to increase focal lengths in optical systems, and are normally used in combination with other lenses.
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.
Our Products are fully customisable,High quality and low price is the advantage of our products .your further requests are welcome!
