CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 1.500″+.000″/-.010″
THICKNESS: 0.236″+/-.002″
EDGE BEVEL: 0.015″/0.020″FACE WIDTH X 45deg, 2PLCS
PARALLELISM: 3 ARC SECONDS MAXIMUM.
TRANSMITTED WAVEFRONT ERROR: 1/10 WAVE RMS MAXIMUM
AT 0.633um WITHIN CA.
SURFACE QUALITY: 10-5 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 1.275″ MINIMUM DIAMETER.
MATERIAL TYPE/QUALITY: FUSED SILICA, OPTICAL GRADE
CORNING 7980 OR EQUIVALENT.
COATING: SURFACE “A”: BEAMSPLITTER COATING PER
DRAWING (90% R)
SURFACE “B”: ANTIREFLECTIVE COATING PER
DRAWING.
MARKING: ARROW ON OD SURFACE POINTING TOWARDS
SURFACE “A”.