W1101- Schott N-BK7 200mm dia. x 1.935mm thk.
$218.90
Product Attributes
Material/Grade: Schott N-BK7
Diameter: 200.0mm ± 0.1mm
Thickness: 1.935mm ± 0.025mm
Metrology Wavelength: 632.8nm
Clear Aperture (CA): 180mm dia. central
Reflective Wavefront: </= 1 Fringe Power, </= 0.5 Fringe Irregularity per any 18mm dia sub-ap w/in the CA
Parallelism: </= 1 arc minute
Bevel(s): Visible to 0.5mm FW @ 45°
Chips: 7mm max intrusion from all edges
Cosmetics: 60/40
Edge Finish: Fine Edge Ground
Roughness: </= 0.7nm Ra (S1 & S2)
Out of stock