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Diameter
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25.40--50.00mm
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Diameter Tolerance
|
+/-0.05mm
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Thickness Tolerance
|
+/-0.05mm
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Focal Length Tolerance
|
±1%
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Surface Accuracy
|
/4 irregularity @632.8nm
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Surface Quality
|
40-20 scratch-dig
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Centration
|
＜3 arc min
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Clear Aperture
|
＞90%
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Bevel
|
Protective bevel
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Material
|
BK7,Fused silica,Quartz,SF11, and other optical glass
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|
Coating
|
AR coating
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| Select Image |
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