CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 1.000″+.000″/-.005″
THICKNESS: 0.0195″+/-.0010″
PARALLELISM: 1 ARC MINUTE MAXIMUM.
EDGE BEVELS: 0.004″ MAXIMUM X 45deg, 2 PLACES
TRANSMITTED WAVEFRONT ERROR: POWER: 2 FRINGES
MAXIMUM @ 633nm
IRREG: 1/2 FRINGE
MAXIMUM @ 633nm
CLEAR APERTURE: CENTRAL 0.520″ DIAMETER FACE.
SURFACE ROUGHNESS: 0.70nm Ra MAXIMUM, 2 FACES.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: c-PLANE
COATING: NONE, NOT REQUIRED.