MAJOR DIAMETER: 0.500″+.000″/-.005″
MINOR DIAMETER: 0.230″+.000″/-.003″
OVERALL THICKNESS: 0.118″+/-.005″
MAJOR DIAMETER THICKNESS: 0.079″+/-.005″
PARALLELISM: 0.001″/INCH MAXIMUM T.I.R.
CONCENTRICITY: DIAMETERS WITHIN 0.001″.
EDGE BEVELS: 0.010″+/-.005″ X 45deg, 2 PLACES
(MAJOR DIAMETER EDGES)
NO BEVEL ON MINOR DIAMETER FACE EDGE.
SURFACE ACCURACY: NOT SPECIFIED.
SURFACE QUALITY: 80-50 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: ANTIREFLECTIVE COATED FOR MAXIMUM
TRANSMISSION AT 3.0 MICRONS WITH A
NORMAL INCIDENCE ANGLE, APPLIED TO
BOTH FACES.