CONFIGURATION: DISC, TRUNCATED, PLANE-PARALLEL
LENGTH: 0.985″+/-.005″
WIDTH: 0.720″+/-.005″
THICKNESS: 0.039″+/-.005″
RADII: 0.500″ BOTH ENDS FORMED BY TRUCATUION OF
A 1.000″ DIAMTER ROUND WINDOW.
FLAT ON RADIUS (ONE END): TO FORM A 0.985″ LENGTH.
EDGE BEVELS: 0.020″+/-.005″ X 45deg, ONE PLACE.
(SEE DRAWING). ALL OTHER EDGES TO
HAVE A LIGHT PROTECTIVE BEVEL.
PARALLELISM: 2 ARC MINUTES MAXIMUM.
TRANSMITTED WAVEFRONT ERROR: 1/2 WAVE MAXIMUM
@ 633nm.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: NONE, NOT REQUIRED.