CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 1.000″+/-.005″
THICKNESS: 0.508mm +/- 0.008mm
CLEAR APERTURE: WITHIN CENTRAL 85% OF DIAMETER.
OPTICAL FLATNESS: < 1.0 WAVE PEAK to VALLEY
IRREGULARITY TRANSMITTED
WAVEFRONT WITHIN CLEAR APERTURE.
PARALLELISM: 1 MILLIRADIAN MAXIMUM.
SURFACE QUALITY: 5-5 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIETNATION: (0001) +/- 2deg