Configuration: Rectangular Plate, Stepped Face
Overall Length: 280.00mm +/- 0.10mm
Overall Width: 46.00mm +/- 0.25mm
Stepped Width: 35.00mm +/- 0.05mm
Step Height: 3.00mm+/- 0.05mm (2 Places)
Overall Thickness: 6.00mm +/- 0.10mm
Ledge Thickness: 3.00mm Reference Only (2 Places)
Parallelism: Controlled by Thickness Tolerances
Surface Roughness: < 5 Angstroms RMS on the Critical Face
Surface Finish: 20-10 Per MIL-PRF-13830 on the Critical Face
Inspection Polish on the End Faces and
the Non-Critical Face
Edge Chips: No Chips Allowed Along the Critical Face Edges
With No Bevels Allowed
Edge Bevels: 0.50mm Maximum Face Width x 45 Degrees, 6 Edges
Where Shown on Drawing
Material Type / Quality: Sapphire, Optical Grade
Crystallographic Orientation: c-Plane
Coating: None, Not Required