DIAMETER: 30.00mm + 0.00mm /- 0.25mm
THICKNESS: 5.00mm +/- 0.25mm
PARALLELISM: < 10 ARC MINUTES
FLATNESS: 1/4 WAVE MAXIMUM @ 633nm, 2 FACES.
EGGE BEVEL: 1.00mm +/- 0.10mm FACE WIDTH, 1 EDGE.
0.35mm MAXIMUM FACE WIDTH, OTHER EDGE
SURFACE FINISH: 60-40 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 28.00mm MINIMUM DIAMETER.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: ANTIREFLECTIVE COATED FOR < 0.50%
REFLECTANCE PER SURFACE AT 1550nm WITH
A NORMAL INCIDENCE ANGLE, APPLIED
TO BOTH FACES.