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Wedge prisms are used as beamsteering elements in optical system. By combining two wedges of equal power in near contact, and independently rotating them, a ray can be steered in any direction within the narrow cone. The equation to determine the deviation angle is:
¦Èd = arcsin(nsin¦Èw)- ¦Èw
Where ¦Èd is the deviation angle, ¦Èw is the wedge angle, and n is the nominal index at the appropriate wavelength.. |
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| Material: |
BK7A |
| Diameter Tolerance: |
+0.00/-0.20mm |
| Thin Edge of wedge: |
3.0mm |
| Surface Flatness: |
¦Ë/8 @633nm |
| Surface quality: |
20/10 |
| Clear Aperture: |
90% of central diameter |
| Bevel: |
0.3mmx45¡ã |
| Coating: |
Single layer MgF2 |
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Product Number |
Diameter |
Nominal Deviation ¦Èd (degrees) |
Wedge angle tolerance |
TWP-25.4B-0.5 |
25.4 |
0.5 |
30 arcsec |
TWP-25.4B-1.0 |
25.4 |
1 |
30 arcsec |
TWP-25.4B-2.0 |
25.4 |
2 |
1 arcmin |
TWP-25.4B-4.0 |
25.4 |
4 |
1 arcmin |
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¡¤All dimensions are in mm unless otherwise specified.
¡¤Other sizes and special shapes are available upon request. |
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