General parameter

Standard

High pricision

Material

Optical Glass, fused silica

Size

2mm-400mm

5mm-300mm

Size tolerance

±0.1mm

±0.02mm

Angle Tolerance

<3'

<2''

Clear Aperture

≥90%

95%

Surface Quality

60/40, 40/20

20/10, 10/5

Surface Flatness

1/2 lambda, 1/4lambda

1/10Lambda, 1/20Lambda

Parallelism

+/-3' , +/-30''

<0.5''

Bevel

<0.2mm±45°

No Bevel (The Angle is unbroken)

Coating

Uncoated, AR, BBAR, Reflective