CONFIGURATION: DISC, PLANE-WEDGED
DIAMETER: 0.700″+.000″/-.003″
CENTER THICKNESS: 0.125″+/-.003″
WEDGE ANGLE: 12 ARC MINUTES +/- 2 ARC MINUTES
ALL PARTS WITHIN 1 ARC MINUTE.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
TRANSMITTED WAVEFRONT ERROR: 1/4 WAVE MAXIMUM
(AT 0.633um) PEAK TO VALLEY AND
1/20 WAVE RMS.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
SURFACE ROUGHNESS: 25 ANGSTROMS RMS MAXIMUM.
CLEAR APERTURE: CENTRAL 0.500″MINIMUM DIAMETER.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: NONE, UNCOATED SUBSTRATE.