Additional information
| Weight | .5 oz |
|---|---|
| Dimensions | 649131626 × 6495772 × 600 mm |
Online Store
W1279- B270 203.2mm dia x 1.1mm th
$105.00
Product Attributes
Material/Grade: Schott B270
Diameter: 203.20mm ± 0.00/-0.25mm
Thickness: 1.10mm ± 0.10mm
Metrology Wavelength: 632.8nm
Clear Aperture (CA): 85% central
Transmitted Wavefront: 1 wave PV per inch
Reflective Wavefront: 1 wave PV per inch
Parallelism: < 30 arc seconds
Bevel(s): Break edge, safety
Bow: <0.010mm
Chips: <0.25mm outside CA
Cosmetics: 40/20
Edge Finish: Fine Edge Ground
Roughness: < 1.00nm RMS
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