Bk7 Wedge Window
Used where the second side reflection (ghost image) needs to be eliminated
Coating substrate for interferometer flats, laser cavity mirrors and beamsplitters
These wedged plane windows are polished to λ/10 flatness with a laser grade finish on both surfaces They are intended for use in situations where reflections from the second surface will interfere with the correct operation of the optical system. Whenever ghost images will contribute to glare or for use in laser systems or interferometry it is advisable to use wedged window so the second image is reflected out of the beam. Four different wedge angles are offered and the wedge should be chosen to suit the application. Select a coating appropriate to your application or contact us with your special coating requirements.
Specifications
Surface Flatness: <λ/10@633nm
Surface Quality: <10/5(both sides)
Wedge α: 30′,1°,2°or 3°
Diameter Tolerance: <+0.00/-0.20mm
Thickness Tolerance: <±0.25mm
Clear Aperture: ≥85% of diameter
Bevel: 0.3mm(typital)*45°
Wedge Code :Wedge Angle α ξTolerance
0.5 30: arecmin±3′
1.0 1 :degree±6′
2.0 :degree±6′
3.0 3 :degree±6′
Part No. |
D Diameter (inches) |
T Thickness (inches) |
Material |
WW-1206B |
0.50 |
0.250 |
BK7A |
WW-1906B |
0.75 |
0.250 |
BK7A |
WW-1909B |
0.75 |
0.375 |
BK7A |
WW-2506B |
1.00 |
0.250 |
BK7A |
WW-2509B |
1.00 |
0.375 |
BK7A |
WW-3809B |
1.50 |
0.375 |
BK7A |
WW-5009B |
2.00 |
0.375 |
BK7A |
WW-5012B |
2.00 |
0.500 |
BK7A |
WW-7612B |
3.00 |
0.500 |
BK7A |
WW-10112B |
4.00 |
0.500 |
BK7A |
WW-1206B |
0.50 |
0.250 |
UV F.S. |
WW-1906B |
0.75 |
0.250 |
UV F.S. |
WW-1909B |
0.75 |
0.375 |
UV F.S. |
WW-2506B |
1.00 |
0.250 |
UV F.S. |
WW-2509B |
1.00 |
0.375 |
UV F.S. |
WW-3809B |
1.50 |
0.375 |
UV F.S. |
WW-5009B |
2.00 |
0.375 |
UV F.S. |
WW-5012B |
2.00 |
0.500 |
UV F.S. |
WW-7612B |
3.00 |
0.500 |
UV F.S. |
WW-10112B |
4.00 |
0.500 |
UV F.S. |
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