DIAMETER: 20.00mm + 0.00mm /- 0.10mm
THICKNESS: 2.00mm +/- 0.10mm
PARALLELISM: 3 ARC MINUTES MAXIMUM.
EDGE BEVEL: SLIGHT PROTECTIVE BEVEL, 2 PLACES.
SURFACE FIGURE: 2.0 WAVES/INCH MAXIMUM, 2 FACES.
TRANSMITTED WAVEFRONT ERROR: 1/2 WAVE MAXIMUM.
SURFACE QUALITY: 60-40 SCRATCH/DIG PER
MIL-O-13830, TWO FACES
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: RANDOM.
COATING: DUAL BAND ANTIREFLECTIVE COATED FOR
> 99.0% TRANSMISSION AT 2.94 MICRONS AND
85.0% MINIMUM TRANSMISSION AT 670nm, WITH
A 0-12deg INCIDENCE ANGLE, APPLIED TO
BOTH FACES. (RANDOM POLARIZATION)
DAMAGE THRESHOLD: 130 J/cm2, 10 Hz, 100usec PULSE