Accuray offers all kinds of optical windows according to customers’ requirement:
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Parameter
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Specification
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Material
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Optical Glass: H-K9L, N-BK7, Fused Silica, Brofloat, etc.
Optical Crystal: Sapphire, CaF2, MgF2, etc.
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Dimension (mm)
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f2.0～f350.0
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Thickness (mm)
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0.5～50.0
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Dimension Tolerance (mm)
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+0.0/-0.1 (General), +0.0/-0.02 (High Precision)
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Thickness Tolerance (mm)
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±0.2 (General), ±0.005 (High Precision)
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Clear Aperture
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>80% (Small Size), >95% (Large Size)
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Parallelism
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3 min. (General), 3 sec. (High Precision)
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Surface Quality
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60/40 (General), 10/5 (High Precision)
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Flatness (per 25mm@633nm)
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λ /4(General), λ/30 (High Precision)
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Bevel (face width x 45。)
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<0.25mm
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Coating
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According customer requirement
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