Wedged Substrate BK7 20mm Diameter 1 Degree Wedge Angle λ/20
WSB-20C05-20-1
Wedged substrates can separate the reflected beam by the front and back surface of the substrates by the slight wedge angle. They can be used as a reference test plate for interferometers and beam samplers.
◦It can also be used as a prism to refract at a small angle. Beam deflection angle δ can be calculated refractive index n, from the wedge angle α.
δ ＝ sin−1（ n sinα） − α ≒（ n − 1） α
◦In BK7, 0.52 times the angle of the wedge, and in synthetic fused silica, 0.46 times the angle of the wedge. (Visible range, normal incidence)
δ ＝ sin−1（ n sinα） − α ≒（ n − 1） α
◦In BK7, 0.52 times the angle of the wedge, and in synthetic fused silica, 0.46 times the angle of the wedge. (Visible range, normal incidence)
| Name | Wedged Substrate BK7 20mm Diameter 1 Degree Wedge Angle λ/20 |
|---|---|
| Weight | 0.0050kgs |
| Standard Coatings Available | No |
| Guide |
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| Remark | - |
| Attention |
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| Image Label | Wedged Substrate BK7 20mm Diameter 1 Degree Wedge Angle λ/20 |
| Diameter φD | 20mm |
| Material | BK7 |
| Material | BK7 |
| Diameter φD | φ20mm |
| Thickness t | 5mm |
| Surface Flatness | λ/20 |
| Wedge angle | 1°±5′ |
| Surface Quality (Scratch-Dig) | 10−5 |
In stock
SKU
WSB-20C05-20-1
$113.00
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Wedged substrates can separate the reflected beam by the front and back surface of the substrates by the slight wedge angle. They can be used as a reference test plate for interferometers and beam samplers.