W-4025-Z-BBAR(8-12)

CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 4.000″+.000″/-.005″
THICKNESS: 0.250″+/-.005″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
FLATNESS: 1/10 WAVE MAXIMUM @ 10.6um, 2 FACES.
SURFACE FINISH: 60-40 PER MIL-O-13830, 2 FACES.
MATERIAL TYPE/QUALITY: ZINC SELINIDE, LASER
GRADE.
COATING: BROAD-BAND ANTIREFLECTIVE COATED FOR
98.0% MINIMUM TRANSMISSION FROM 8.0um
TO 12.0um, WITH A NORMAL INCIDENCE ANGLE,
APPLIED TO BOTH FACES.