Ultra-Violet Achromats
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Air-spaced design
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Corrected from 200 to 400nm
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Barrel mounted for ease of use
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Standard focal lengths from 50 to 300mm
The air-spaced design of these lenses using materials of different refractive index has produced a high degree of correction over a bandwidth of 200 to 400nm. These achromats may be used as laser focusing lenses or with broadband Ultra-Violet sources. A calcium fluoride bi-convex element and a fused silica meniscus element are mounted together in a plain barrel. The lenses are supplied uncoated. Optional Anti-Reflection coatings upon request.
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| Focal Length, f (mm) | Clear Aperture, A (mm) | Working Distance, WD (mm) | Cell Diameter, D (mm) | Cell Length, L (mm) | Material | Focal Length tolerance | Dimension tolerance | Centration tolerance | Coating |
|---|---|---|---|---|---|---|---|---|---|
| 50.4 | 27.0 | 40.7 | 34.0 | 17.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 80.0 | 27.0 | 72.4 | 34.0 | 14.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 100.1 | 27.0 | 92.5 | 34.0 | 13.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 151.5 | 27.0 | 137.1 | 34.0 | 16.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 200.3 | 27.0 | 185.2 | 34.0 | 16.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 80.3 | 37.0 | 70.2 | 44.0 | 17.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 100.0 | 37.0 | 87.7 | 44.0 | 18.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 149.0 | 37.0 | 134.4 | 44.0 | 18.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 201.2 | 37.0 | 185.5 | 44.0 | 18.5 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |
| 249.7 | 37.0 | 230.7 | 44.0 | 19.0 | Fused Silica/Calcium Fluoride | ±2% @308nm | ±0.2mm | ≤ 3arcmin | Anti-Reflection upon request |