Stanford Advanced Material can provide sapphire windows, lenses, prisms and domes in various shapes, sizes and forms i.e. squares, plates, rectangles and discs are available.
Specification of sapphire windows
|Crystal||LED Grade Sapphire|
|Orientation||C plane tiled M axis 0.20°±0.05°|
|Primary Flat Location||A-axis ± 0.1°|
|Flat Length||16.0±0.5 mm|
|Front Side Roughness||Ra ≤0.2nm|
|Back Side Roughness||Ra ≤0.2nm|
|Edge Bevel||Curve; Rounded|
|TTV||≤7.0µm (95%≤5um; 100%≤7um)|
|Tir||≤7.0µm (95%≤5um; 100%≤7um)|
|Bubble & Color||None by visual inspection in intensive light|
|Ground Boundary||None by visual inspection in fluorescent light|
|Cleanliness||Free visible contamination|
|Packaging||Vacuum packed in one-piece box or Entegris cassettes of 25 in a class 100 clean room, under a nitrogen atmosphere|
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