+86 43189825768
Sales@worldhawk.com
Worldhawk Optics
Tel : +86 43189825768
Email:Sales@worldhawk.com
Website : www.worldhawk.com
www.worldhawk.en.alibaba.com
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Contact Us
Worldhawk Optics
Tel : +86 43189825768
Email:Sales@worldhawk.com
Website:www.worldhawk.com
https://worldhawk.en.alibaba.com
Ge Windows
Ge Windows
An Optical Window is an optically flat. These regular windows are applied to isolate different physical environments while allowing light pass. When selecting windows,please consider materials, transmission, scattering, parallelism and resistance to certain environment. It can be widely used on laser technology, IR detector and imaging technology etc. Worldhawk offers standard and high precision optical glass windows in round ,rectangular, wedge windows and custom shape and size with different optical glasses,Fused Silica, Sapphire, ZnSe, Zns and IR crystal. The high precision parallelism of 10 arc seconds, surface quality of 10/5 and flatness of λ/20. Single layer or multi-layer anti-reflection coatings are available. |
Windows general specifications
Diameter | 0.2-300mm |
Diameter tolerance | +/-0.1mm or +/-0.02mm |
Thickness | 0.10-100mm |
Thickness tolerance | ± 0.1mm or +/-0.02mm |
Surface quality (scratch & dig) | 60/40, 40/20 or better |
Surface accuracy | λ/10, λ/2, λ |
Clear Aperture | >85%, >90% |
Parallelism | +/-3' ,+/-30'' |
Bevel | 0.1~0.3mm×45 degree |
coating | AR, BBAR or upon customer request( UV, VIS, IR) |
Materials Characteristic
B270 | CaF2 | Ge | MgF2 | N-BK7 | Sapphire | Si | UV Fused Silica | ZnSe | ZnS | |
Refractive index (nd) | 1.523 | 1.434 | 4.003 | 1.413 | 1.517 | 1.768 | 3.422 | 1.458 | 2.403 | 2.631 |
Coefficient of dispersion (Vd) | 58.5 | 95.1 | N/A | 106.2 | 64.2 | 72.2 | N/A | 67.7 | N/A | N/A |
Density(g/cm3) | 2.55 | 3.18 | 5.33 | 3.18 | 2.46 | 3.97 | 2.33 | 2.20 | 5.27 | 5.27 |
TCE(μm/m℃) | 8.2 | 18.85 | 6.1 | 13.7 | 7.1 | 5.3 | 2.55 | 0.55 | 7.1 | 7.6 |
Soften Temperature(℃) | 533 | 800 | 936 | 1255 | 557 | 2000 | 1500 | 1000 | 250 | 1525 |
Knoop hardness (kg/mm2) |
542 | 158.3 | 780 | 415 | 610 | 2200 | 1150 | 500 | 120 | 120 |
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Address:
Changchun Worldhawk Optics Co., Ltd.
NO.6116, Ji-Lin Road, Changchun, JiLin,China
Tel:+86 431 89825768
Email:Sales@worldhawk.com
Website:www.worldhawk.com
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