Magnesium Fluoride Optical Protective Window
HS-OPTICS offers windows of all kinds of materials and shapes
Shapes: square, circular, stepped, ellipse, ring, fan, trapezoid, triangle, conical, various special-shaped, etc.
Main material: BK7, B270, H-K9, fused silica, high borosilicate, sapphire, germanium and silicon, zinc selenide, calcium fluoride, magnesium fluoride and other kinds of high quality optical glass.
Windows are generally used as antireflection. And we can deposit windows according to customer requirements.
Technical parameters
Size range | 0.5-1000mm |
Size tolerance | +0.0/-0.2mm |
Thickness tolerance | ±0.1mm |
Parallelism | <10 seconds ~3 points |
Surface accuracy | 10/5~80/50 |
Surface quality | λ/10~λ/2 |
Clear aperture | >90% |
Bevelling | <0.5mmx45° |
Coating | AR coating or according to the customer request coating |
Commonly used window material characteristics:
Material | Refractive index | Transmission range | Coefficient of thermal eapansion | Density (g/cm3) |
H-K9 | 1.5164@546.1nm | 330-2100nm | 7.50 | 2.52 |
Fused silica | 1.4586@546.1nm | 185-2500nm | 0.58 | 2.20 |
Borofloat33 | 1.4731@546.1nm | 380-2100nm | 3.30 | 2.20 |
Sapphire | 1.7551@1000nm | 180-4500nm | 8.40 | 3.98 |
Germanium | 4.0025@10000nm | 2000-14000nm | 5.5 | 5.33 |
Silicon | 3.4258@5000nm | 1200-7000nm | 2.55 | 2.33 |
Znse | 2.0428@10600nm | 550-20000nm | 7.6 | 5.27 |
Calcium fluoride | 1.3989@5000nm | 170-7800nm | 18.85 | 3.18 |
Magnesium fluoride | 1.3856@550nm | 120-7000nm | 8.48 | 3.17 |