Material : Monocrystalline Germanium 99.999%

Specification : Φ3-Φ80mm(according to customers' requirement),

Center thickness: 1.0-3.0mm

(Center thickness=1.5mm, F=3.9/5.5)

Precision (the highest) :

N=5-10 ,

B=40/20 ,

C=0.1

Output : 100K-200K/month

Size : plano-convex plano-concave, or window plate, according to your requires

Thickness : according to your requires

Diameter Tolerance ±0.01mm

Thickness Tolerance ±0.01 mm

Surface transmittance :75%--98% (based on different coating area and coating technical) (Germanium is much better than silicon)

Surface Quality : (Scratch-Dig) 60-40 (according to your requires)

Spherical Surface Powerb :λ/2 (according to your requires)

Shape : Plano-convex or Plano-concave or window plate

Centration : <3′

Clear aperture >= 90%central of the diameter

Wavelength according to your requires

Coating: AR coating or other selection (according to your requires)

Surface transmittance :75%--95% (based on different coating area and coating technical)