CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 50.00mm + 0.00mm /- 0.10mm
THICKNESS: 1.37mm +/- 0.10mm
PARALLELISM: 0.025mm MAXIMUM T.I.R.
EDGE BEVELS: LIGHT PROTECTIVE BEVEL, 2 PLACES
SURFACE ACCURACY: POWER: < 1 FRINGE, 2 FACES.
IRREG: < 1/2 FRINGE, 2 FACES.
RMS: < 0.0316 FRINGE, 2 FACES.
SURFACE QUALITY: 40-20 PER MIL-PRF-13830, 2 FACES.
SURFACE ROUGHNESS: < 50 ANGSTROMS RMS, 2 FACES.
CLEAR APERTURE: CENTRAL 29.40mm X 19.20mm AREA.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 2deg
COATING: NONE, NOT REQUIRED.