CONFIGURATION: DISC, PLANO-CONVEX
DIAMETER: 19.05mm + 0.00mm /- 0.25mm
CENTER THICKNESS: 3.175m +/- 0.125mm
EDGE THICKNESS: 3.075mm REF.ONLY
CENTRATION ERROR: 3 ARC MINUTES MAXIMUM.
EDGE BEVEL: SLIGHT PROTECTIVE BEVEL, 2 PLACES.
FOCAL LENGTH: 600.0mm +/- 1.0%
SPHERICAL RADIUS: 448.90mm +/- 8.98mm (CONVEX)
SURFACE ACCURACY: 1/4 WAVE MAXIMUM, 2 FACES.
SURFACE QUALITY: 20-10 PER MIL-O-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 15.2mm MINIMUM DIA, 2 PLCS
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: C-AXIS PERPENDICULAR
TO PLANO FACE, (0001) NOMINAL.
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)