Description
Bi-Concave Lenses is like the Plano-Concave lenses in that they are used to produce divergent light. The Bi-Concave is best used when the input beam is converging.
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Material: |
BK7,Fused
Silica or other optical glass |
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Dimension
Tolerance: |
±0.1mm(Standard),
±0.01mm(High Precision) |
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Center
Thickness Tolerance: |
±0.1mm(Standard),
±0.02mm(High Precision) |
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Paraxial
Focal Length: |
±2% |
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Surface
quality: |
60/40(Standard),
20/10(High Precision) |
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Clear
Aperture: |
>85% |
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Surface
Figure: |
λ/2(Standard),
λ/8(High Precision) @633nm |
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Centration: |
3
arc minutes |
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Bevel: |
<0.25mm×45° |
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Coating: |
Upon requirement |
