W1240- N-BK7 200mm dia x 9.9mm thk
$7,909.00
Product Attributes
Material/Grade: N-BK7
Diameter: 200.00mm ±0.20mm
Thickness: 9.90mm ±0.10mm
Metrology Wavelength: 633nm
Clear Aperture (CA): 180mm dia
Transmitted Wavefront: <1/8wv, pre-coat
Reflective Wavefront: <1/8wv, pre-coat
Parallelism: <1 arc second
Bevel(s): 0.3mm - 1.0mm FW @ 45°
Cosmetics: 20/10
Edge Finish: Fine Edge Ground
Roughness: <10A RMS, both faces
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