Windows and beamsplitters
Windows are used to allow optical radiation to pass from one environment to another
without allowing other components of these environments to mix. Consideration in selecting
windows may include transmission and resistance to certain environments.
In this section we offer windows of three different materials (BK7 glass, Fused Silica,
UV Grade Fused Silica) and different specification on flatness and parallelism, from which
you may choose in accordance with the properties you need. If your are looking for other
materials, go to the OpticsLand™ main page.
Online store:
Windows can be anti-reflection coated, for required coating please refer to Coatings
section. Diameter up to 250 mm is available on request.
General Specifications:
Material BK7, Fused Silica, UV Grade Fused Silica
Diameter tolerance +0.00, -0.12mm
Thickness tolerance ± 0.3mm
Clear aperture 90% of the diameter (80% for flatness 1l )
BK7/FS/UVFS Windows
Flatness
@ 633nm |
Parallelism |
Diameter, mm |
Thickness,
mm |
Cat.-No. |
BK7 |
FS |
UVFS |
1l
per inch |
2 arcmin |
12.5 |
3.0 |
09001 |
19001 |
39001 |
25 |
09003 |
19003 |
39003 |
40 |
09005 |
19005 |
39005 |
50 |
09007 |
19007 |
39007 |
l /4 |
30 arcsec |
12.5 |
3.0 |
09102 |
19102 |
39102 |
25 |
6.0 |
09104 |
19104 |
39104 |
40 |
10.0 |
09106 |
19106 |
39106 |
50 |
12.0 |
09108 |
19108 |
39108 |
3 arcsec |
12.5 |
3.0 |
09110 |
19110 |
39110 |
25 |
6.0 |
09112 |
19112 |
39112 |
40 |
10.0 |
09114 |
19114 |
39114 |
50 |
12.0 |
09116 |
19116 |
39116 |
l /10 |
30 arcsec |
12.5 |
3.0 |
09101 |
19101 |
39101 |
25 |
6.0 |
09103 |
19103 |
39103 |
40 |
10.0 |
09105 |
19105 |
39105 |
50 |
5.0 |
09106 |
19106 |
39106 |
50 |
12.0 |
09107 |
19107 |
39107 |
3 arcsec |
12.5 |
3.0 |
09109 |
19109 |
39109 |
25 |
6.0 |
09111 |
19111 |
39111 |
40 |
10.0 |
09113 |
19113 |
39113 |
50 |
12.0 |
09115 |
19115 |
39115 |
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