|
|
|
|
 |
BTMT can manufacture many difficult parallel windows of tight parallelism, tight dimension tolerance, high precision flatness and laser-grade surface quality. It is certain that all of our products are reliable because we have advanced inspecting-equipments, QA procedures and excellent operation process and high-tech staffs. |
|
| |
 |
| |
| Material: |
See table |
| Surface Quality: |
10/5, 20/10(both sides) |
| Parallelism: |
See table |
| Diameter Tolerance: |
+0.00/-0.20mm |
| Thickness Tolerance: |
See table |
| Clear Aperture: |
>90% of central diameter |
| Coating: |
Optional |
| Bevel: |
0.3mmx45° |
|
|
|
| |
Product Number |
Diameter |
Thickness |
Thickness Tolerance |
Parallelism |
Material |
TPW-12.7D2-B-1sec |
12.7 |
2 |
0.001 |
1 arcsec |
BK7A |
TPW-12.7D2-B-5sec |
12.7 |
2 |
0.001 |
5 arcsec |
BK7A |
TPW-25.4D2-Q-3sec |
25.4 |
2 |
0.001 |
3 arcsec |
Quartz |
TPW-25.4D2-Q-10sec |
25.4 |
2 |
0.005 |
10 arcsec |
Quartz |
TPW-25.4D5-U-1sec |
25.4 |
5 |
0.001 |
1 arcsec |
UV Fused silica |
TPW-25.4D10-U-1sec |
25.4 |
10 |
0.001 |
1 arcsec |
UV Fused silica |
TPW-25.4D15-U-1sec |
25.4 |
15 |
0.001 |
1 arcsec |
UV Fused silica |
TPW-25.4D25-U-1sec |
25.4 |
25 |
0.001 |
1 arcsec |
UV Fused silica |
TPW-38D6-B-10sec |
38.1 |
6.35 |
0.05 |
10 arcsec |
BK7A |
TPW-50D10-B-10sec |
50.8 |
10 |
0.05 |
10 arcsec |
BK7A |
|
| |
·All dimensions are in mm unless otherwise specified.
·Other sizes and special shapes are available upon request. |
| |
 |
 |
 |
| parallelism for tested piece |
| refractive index for tested piece |
| diameter of interferometer |
| diameter for tested piece |
| fringe in interferometer |
| fringe in tested piece's diameter |
|
|
|
|
| |
|
|
|
