CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 1.000″+.000″/-.005″
OD FLAT: NONE, NOT REQUIRED.
THICKNESS: 0.68874mm +/- 0.00046mm
PARALLELISM: 2 ARC SECONDS MAXIMUM.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
TRANSMITTED WAVEFRONT ERROR: 1/10 WAVE @ 633nm.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 20.00mm MINIMUM DIAMETER.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: m-PLANE +/- 5 MIN.
COATING: ANTIREFLECTIVE COATED FOR MAXIMUM
TRANSMISSION AT 3.40 MICRONS WITH A
NORMAL INCIDENCE ANGLE, APPLIED TO
BOTH FACES.