Specification :

Spherical lens
According to custom design to manufacture kinds of spherical lenses. Such as plano convex spherical lens, plano concave spherical lens, bi-convex spherical lens, bi-concave spherical lens, meniscus lens, achromatic lens, aspherical & spherical series.
Material: flint glasses, UV-fused silica, Infrared fused silica, CaF2, Ge, ZnSe, Si, etc.
Focal length: ±5mm --±1000mm±1%
(test by TIROPTICS OPTOMATIC2000 made in Germany)
Diameter: 4mm--200mm ±0.1mm
Tc torlerance:±0.1mm
Centration: 3-5'
Surface accuracy: »/2
Surface quality: 40/20
Clear aperture: 90%
Coating: custom design