1. Diameter : 20mm
2. Focal length :50.8mm/2"
3. Thickness : 2mm
4. Material : Imported USA CVD ZnSe
5. Structure : Meniscus lenses(wavelength 10.6um)
6. Usage : Apply for co2 laser cutting and engraving
7. ZnSe lenses can be provided as a generated blank, polished optic and/or coated to your requirements.
Lens specification:
| Model | Dia 20mm laser focus lens | ||||
| Diameter | 18mm | ||||
| Focus Length | 38.1mm | 50.8mm | 63.5mm | 76mm | 101mm |
| Diameter Tolerance | +0/-0.13mm | ||||
| Thickness Tolerance | ±0.25mm | ||||
| FL Tolerance | <±2% | ||||
| Centration | <3 arc minutes | ||||
| Clear Aperture | >90% | ||||
| Surface Figure | <λ/2 per 1"Dia(@)632.8nm | ||||
| Surface Quality | 40-20 scratch and dig | ||||
| AR/AR coating | R<0.5% per surface (@) 10.6um | ||||
Contacts details:








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