AMTIR-1
Amorphous Material Transmitting Infrared
Radiation. Glass-like, high homogeneity. Applications:
infrared windows, lenses and prisms. Not
water soluble. Low thermal change in refractive
index. Maximum application temperature 300°C. Composition
Ge33As12Se55 - Similar to
Germanium in its mechanical and optical properties and lower
index of refraction - thus a good
option for colour correction with Germanium. More
expensive than Germanium. Diamond Turned surface finishes of
120 Angstroms rms are typical.
Property
|
Specification
|
| Transmittance Range |
0.9 - 12 µm |
| Density g/cm3 |
4.7 |
| Average Coefficient of
Expansion @20C (10^-6 K^-1) |
13.5 |
| Surface Figure |
In the
infrared, typical required surface figure ranges
from 1/2wave to 2 waves @0.6328 µm depending on the
system performance requirements. |
| AR Coating Options |
Mostly BBAR
coated for use in the 3-5 µm or 8-12 µm spectral
regions. Many specialized coating bands are possible
between 1 and 14 µm. |
| Typical Applications |
Thermal
imaging, FLIR. |
| |
Lenses,
Aspheric Lenses, Binary (Diffractive) Lenses,
Windows, Wedges. |
|
