CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 60.00mm + 0.00mm /- 0.10mm
THICKNESS: 8.00mm +/- 0.10mm
PARALLELISM: 10 ARC SECONDS MAXIMUM.
EDGE BEVEL: 0.20mm / 0.50mm X 45deg, 2 PLACES.
EDGE BEVEL FINISH: BRUSHED POLISHED, 2 PLACES.
OD EDGE FINISH: FINE GROUND, POLISH NOT ACCEPTABLE
CLEAR APERTURE: CENTRAL 50.00mm MINIMUM DIAMETER.
TRANSMITTED WAVEFRONT ERROR: 1/2 WAVE MAXIMUM AT
633nm.
SURFACE QUALITY: 10-5 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
WITH NO INCLUSIONS, BLOCK
MARKS, TWINS, CLOUDS,
OR DISPERSAL CENTERS.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 2deg.
COATING: NONE, NOT REQUIRED.