Esco manufactures plano-convex lenses using S1-UV grade fused silica, G1 fused silica, commercial grade and BK7 optical glass. Each optic is pitch polished to provide good surface quality and excellent low-cost imaging performance for a wide range of light sources.
Specifications
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Specifications
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Standards
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Effective Focal Length (EFL) Tolerance
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±2%
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Dimensional Tolerance
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Diameter: +0.000”-0.005”
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Thickness: ±0.010”
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Edge Thickness Variation (ETV)
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<= 0.002”
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Clear Aperture (polished)
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90% of diameter
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Surface Figure at 0.63µm
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Plano: 1 fringe Power
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1/2 fringe Irregularity
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Radius: varies depending upon radius
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Scratch-Dig
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10-20
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AR Coating Reflectivity per Surface at 10.6µm
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<= 0.20%
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