N-BK7 Wedge Prisms
Dimension: 10-200mm
Surface Accuracy: 60-40 or better
Size Tolerance: +/-0.1mm or better
Angle Tolerance: +/-3’or 30”
Coating: Optional
The wedge prism is a prism with a shallow angle between its input and output surfaces. This angle is usually 3 degrees or less. Refraction at the surfaces causes the prism to deflect light by a fixed angle. When viewing a scene through such a prism, objects will appear to be offset by an amount that varies with their distance from the prism.
WHAT IS WEDGE PRISM?
The wedge prism is a prism with a shallow angle between its input and output surfaces. This angle is usually 3 degrees or less. Refraction at the surfaces causes the prism to deflect light by a fixed angle. When viewing a scene through such a prism, objects will appear to be offset by an amount that varies with their distance from the prism.
Picture show of our 30mm wedge prism.
REFRACTION OF THE WEDGE PRISM.
For a wedge prism in air, rays of light passing through the prism are deflected by the angle δ, which is approximately given by
where n is the index of refraction of the prism material, and α is the angle between the prism’s surfaces.
- Used Individually to Deviate a Laser Beam a Set Angle
- Combine Two to Create An Anamorphic Pair for Beam Shaping
APPLICATION OF THE WEDGE PRISM
- 1.Beam Steering
- 2.Tunable Lasers
- 3.Anamorphic Imaging
- 4.Forestry
COMMON SPECIFICATIONS OF OUR WEDGE PRISM:
| Angle Tolerance (arcsec) | ±30 |
| Bevel | Protective bevel as needed |
| Coefficient of Thermal Expansion CTE (10-6/°C) | 7.1 |
| Design Wavelength DWL (nm) | 632.8 |
| Image Orientation | Beam Deviation |
| Substrate | N-BK7 or other optical material |
| Surface Flatness | λ/10 |
| Surface Quality | 80-50/20-10 |
