Fused Silica Plano Concave Lenses
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Simple negative lenses for general use
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Focal lengths from -15 to - 300mm
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Diameters from 10 to 50.8mm
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Complete range of optional Anti-Reflection coatings available
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| D (mm) | f (mm) | tc (mm) | te (mm) | fb (mm) | r (mm) | Centration (arcmin) | Surface Quality | Material | Coating | Focal Length tolerance | Clear Aperture (%) | Diameter tolerance | Thickness tolerance | Design Wavelength | Bevel |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10.0 | -15.0 | 2.0 | 4.1 | -16.4 | 6.90 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 10.0 | -20.0 | 2.0 | 3.5 | -21.4 | 9.20 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 10.0 | -25.0 | 2.0 | 3.1 | -26.4 | 11.50 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 10.0 | -30.0 | 2.0 | 2.9 | -31.4 | 13.80 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 10.0 | -40.0 | 2.0 | 2.7 | -41.4 | 18.40 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 10.0 | -50.0 | 2.0 | 2.6 | -51.4 | 23.00 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 12.7 | -20.0 | 2.0 | 4.5 | -21.4 | 9.20 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 12.7 | -25.0 | 2.0 | 3.9 | -26.4 | 11.50 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 12.7 | -30.0 | 2.0 | 3.5 | -31.4 | 13.80 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |
| 12.7 | -40.0 | 2.0 | 3.1 | -41.4 | 18.40 | ≤ 1 | 20 - 10 | SFS | none | ±1% | ≥ 90 | +0, -0.1mm | ±0.15mm | 546.1 | 0.2mm x 45° typical |