ERM-21/05-Z-97

CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 21.00mm + 0.00mm /- 0.10mm
THICKNESS: 5.00mm +/- 0.10mm
PARALLELISM: 2 ARC MINUTES MAXIMUM
EDGE BEVEL: 0.25mm NOMINAL X 45deg, 2 PLACES.
SURFACE ACCURACY: 1/2 WAVE MAXIMUM @ 633nm,2 FACES
SURFACE FINISH: 40-20 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 19.95mm DIAMETER, 2 FACES.
MATERIAL TYPE/QUALITY: ZINC SELENIDE, LASER GRADE.
COATING: SURFACE “2”: PARTIAL REFLECTIVE COATED
FOR 97.0% +/- 0.50% REFLECTANCE AND
ALSO 3.0% +/- 0.50% TRANSMISSION, BOTH
WITH A NEAR NORMAL INCIDENCE ANGLE.
RANDOM POLARIZATION. 5 KW/cm2 DAMAGE
THRESHOLD.
SURFACE “1”: ANTIREFLECTIVE COATED FOR
MAXIMUM TRANSMISSION AT 10.60 MICRONS.
MARKING: ARROW ON OD SURFACE POINTING TOWARDS
SURFACE “1” FACE.