平凸透镜
The based function of the lenses is that when parallel beams are converged or lights from point sources are converted to parallel beams. The lenses are polished carefully .We can supply these lens that uncoated and coated with broadband multilayer AR coatings for visible.
Specifications
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Item
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Commercial
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High Precision
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Material:
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N-BK7；Fused Silica ；Silicon
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Diameter φ:
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3mm~60mm
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Dimension tolerance:
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±0.1mm
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±0.05mm
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Focus length tolerance:
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±2%@632.8mm
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Surface figure(per 25.4mm)
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λ/4@632.8nm
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λ/10@ 632.8nm
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Surface quality:
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MIL40-20
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Clear aperture:
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85%
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Centration:
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≤3′
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Bevel(face width×45°):
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0.2~0.4mm or specified by customer
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Coating:
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Specified by customer
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