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Sapphire Crystal
Sapphire ingot and wafer
Hperhemisphere sapphire dome
Sapphire dome
Sapphire asperic dome
Special shaped sapphire dome
Sapphire window
Sapphire lens&prism
Sapphire tube&rod
Sapphire hole
Sapphire coating
Special gem components
Other material
Dimensional range, limit deviation (mm)
Square window
Item
Length L1
Width L2
Height H
Dimension range
2 ~ 180
2 ~ 180
0.50 ~ 50
Tolerance
0.01 ~ 0.10
0.01 ~ 0.10
0.01 ~ 0.05
Rectangular window
Dimension range
2 ~ 360
2 ~ 320
0.50 ~ 50
Tolerance
0.01 ~ 0.10
0.01 ~ 0.10
0.01 ~ 0.05
Circular window
Item
Diameter φD
Thickness H
Dimension range
φ1 ~ φ400
1 ~ 100
Tolerance
0/-0.01 ~ 0/-0.10
+/- 0.01
Polygon window
Length L1
Width L2
Height H
Edge L3
Dimension range
5~300
5~300
2 ~ 100
Tolerance
±0.10
±0.05
±0.02
±0.10
Technical criteria
Item
Average
Precise
Ultraprecise
Angle tolerance polygon
±1°
±0.5°
±0.1°
Facial contour (632.8nm) N
5λ
2λ
λ/2
Irregularity degree △N
1
1/2
1/4
Surface quality MIL
80/50
40/20
20/10
Surface quality MIL circular
80/50
60/40
40/20
Surface roughness(nm)
1.5~2.5
0.5~1.5
< 0.5
Crystal orientation deviation
≤5°
≤2°
≤0.5°
Depth of parallelism
15′~ 10′
10′~ 1′
1' ~ 10 "
Crystal orientation
C、A、M optional
Transmittance
Under 632.8nm wavelength>85%
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