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ZnSe is a kind of chemically inert material with high purity, strong adaptability and easy processing. It has low optical transmission loss and good transmittance. With low absorption coefficient and high resistance to thermal shock, it is the preferred material for high-power CO2 laser optical elements.
Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.
Material | ZnSe (Zinc Selenide) |
|---|---|
Design wavelength | 10.6͢m |
Focal length tolerance | ± 1% |
Dimension tolerance | +0.0/-0.1mm |
Thickness tolerance | ±0.2mm |
Surface accurcay | λ/2@632.8nm |
Surface quality | 60-40 |
Centration | < 3 arc min |
Clear aperture | > 80% |
Chamfer | < 0.2 x 45° |
Coating | IR AR Coating 8-12 μm |
Laser Focus Lens
ECOPTIK using USA import CVD material, material has no impurity absorption, scattering loss is very low. Therefore, become the preferred materials for optical device fabrication of high-power CO2 laser system. In addition, in the whole transmission band, but also in the different optical systems commonly used materials.
| Part No. | Diameter | Focal Length | Thickness | Material | |||
|---|---|---|---|---|---|---|---|
| mm | inch | mm | inch | mm | inch | ||
| ECO-CL-D12.7F50.8 | 12.7 | 0.5 | 50.8 | 2 | 1.6 | 0.06 | CVD ZnSe, GaAS |
| ECO-CL-D15F38.1 | 15 | 0.59 | 38.1 | 1.5 | 1.8 | 0.07 | CVD ZnSe, GaAS |
| ECO-CL-D18F50.8 | 18 | 0.71 | 50.8 | 2 | 2 | 0.08 | CVD ZnSe, GaAS |
| ECO-CL-D19.05F63.5 | 19.05 | 0.75 | 63.5 | 2.5 | 2 | 0.08 | CVD ZnSe, GaAS |
| ECO-CL-D20F50.8 | 20 | 0.79 | 50.8 | 2 | 2 | 0.08 | CVD ZnSe, GaAS |
| ECO-CL-D20F63.8 | 63.5 | 2.5 | 2 | 0.08 | CVD ZnSe, GaAS | ||
| ECO-CL-D20F75 | 75 | 3 | 2 | 0.08 | CVD ZnSe, GaAS | ||
| ECO-CL-D20F101.6 | 101.6 | 4 | 2 | 0.08 | CVD ZnSe, GaAS | ||
| ECO-CL-D20F127 | 127 | 5 | 2 | 0.08 | CVD ZnSe, GaAS | ||
| ECO-CL-D20F190.5 | 190.5 | 7.5 | 2 | 0.08 | CVD ZnSe, GaAS | ||
| ECO-CL-D25.4F101.6 | 25.4 | 1 | 101.6 | 4 | 2.5 | 0.1 | CVD ZnSe, GaAS |
| ECO-CL-D25.4F50.8 | 50.8 | 2 | 2.5 | 0.1 | CVD ZnSe, GaAS | ||
| ECO-CL-D25.4F63.5 | 63.5 | 2.5 | 2.5 | 0.1 | CVD ZnSe, GaAS | ||
The suitable laser wavelength λ=10.6um，usual focal length:F38.1mm,F50.8mm,F63.5mm,etc.
We provide the customized producing.
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