Lenses
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Download Optics for Nd: YAG Lasers Datasheet (PDF, 172 KB) |
Lenses are widely used at YAG-laser apparatuses for welding, cutting, drilling, and marking as well as in based on YAG-laser other applications like collimators, magnifiers, radiometers, optical transceivers, and condensers.
Tydex offers plano-convex, plano-concave, bi-convex, bi-concave, and meniscus lenses of spherical design. Cylindrical and custom-made lenses are also available.
Specification:
| Substrate material: | KU-1, K8 |
| Surface figure (irregularity) @ 633nm: | l/10 |
| Surface quality, scr/dig: | 20/10 |
| Clear aperture: | exceeds central 85% of dimension |
| Dimensional tolerance, mm: | +0/– 0.25 |
| Thickness tolerance, mm: | ± 0.25 |
| Edge thickness variation, mm: | <= 0.05 |
| Effective focal length (EFL) tolerance, %: | ± 2 |
| Antireflection coating: | dielectric; user specified, R<=0.25% per surface (R<=0.1% is also possible on request) |
| Damage threshold, J/cm2: | 2-5, depending on coating spec. |
| No. | Diameter, mm | EFL, mm | Central thickness, mm |
| 1 | 4 | 6 | 2.1 |
| 2 | 5 | 10 | 3.9 |
| 3 | 10 | 25 | 4 |
| 4 | 12.7 | 50 | 2 |
| 5 | 25.4 | 50 | 5.3 |
| 6 | 25.4 | 100 | 4 |
| 7 | 38.1 | 100 | 6 |
Here are some examples of the lens coatings:
Fig. 1. UV Fused Silica plano-convex lens, AR (R <= 0.25%) @ 532nm.
Fig. 2 UV Fused Silica plano-convex lens, AR/AR (R <= 0.25%) @ 532nm & 1064nm.
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