Product type: Znse CO2 Laser Lens. Application: Lighting, Medical, Optical, Photography. Model: OL.
Overview
The Znse Laser CO2 Lens 63.5 Focus 20mm Dia is supplied as an optical lens made from Znse. Listed geometry: flat shape. Optical / electrical data: transmittance >95%. Coating: Coating. Typical applications: Lighting, Medical, Optical and Photography. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Znse |
|---|---|
| Type | Znse CO2 Laser Lens |
| Shape | Flat |
| Transmittance | >95% |
| Coating | Coating |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | OL |
| Lenses Color | Clear |
| Supplier | Shenyang Ebetter Optics Co., Ltd. |
Technical data
| Substrate Material | ZnSe |
|---|---|
| Shape | Spherical Plano-Concave, P-Convex, Concave-Convex or Aspheric |
| Surface Figure | λ/20 before coating at 10.6μm |
| Surface Quality | 20-10 |
| Dimensional Tolerance | +/- 0.02mm |
| Thickness Tolerance | +/- 0.02mm |
| Chamfer | 0.35mm at 45° (typical) |
| Concentricity | < 0.05mm |
| Focal Length Tolerance | +/- 2% |
| Antireflection Coating | Ravg < 0.6% per surface at 3-5μm |
| Ravg < 0.75% per surface at 8-12μm | |
| Ravg < 0.5% per surface at 10.6μm | |
| Clear Aperture | Exceeds central 85% of dimension |
| Absorption | <0.3% total absorption as measured by CO2 laser calorimetry |
| Design Wavelength | 10.6μm |
What to specify when you request a quote
- Material — listed as “Znse”; name the glass or crystal.
- Geometry — give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Coating”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Fused Silica Windows for UV and Laser Optical Systems. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read How to Handle and Maintain Precision Glass Components in Laser Systems. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is Infrared Windows.
