| Barium Fluoride , its
transmission range is 0.2 - 11 μm. Polishing
is quicker than calcium fluoride using diamond pastes
but is less easy to obtain free of sleeks. Barium
fluoride is less resistant to attack by water than
Calcium Fluoride. Pronounced water attack occurs
at 500 ℃ , but the material can be used to 800 ℃
in a dry environment. The material is relatively
hard but is highly sensitive to thermal shock.
| Optical
BaF2 Windows |
High
Precision |
Standard
|
| Specifications |
|
|
|
Diameter Tolerance |
+0.0/-0.1mm |
+0.0/-0.1mm |
| Thickness
tolerance |
±0.2mm |
±0.2mm |
| Clear
Aperture |
>80% |
>80% |
| Parallelism |
<30
seconds |
3' |
| Surface
Quality |
60-40
scratch and dig |
80-50
scratch and dig |
| Wavefront
Distortion |
λ/2
per 25mm at 632nm |
2λ
per 25mm at 632nm |
| Bevel |
< 0.25mm×45º |
<0.25mm×45º |
Standard BaF2 window
| Part No. |
Dimension mm |
Price 1-5 pcs |
Price 5-10pcs |
BFW203 |
Ø20×3 |
$55 |
$50 |
BFW254 |
Ø25×4 |
$78 |
$73 |
BFW353 |
Ø35×3 |
$100 |
$95 |
Custom size are available on request |
