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.
