Equilateral Dispersion Prism
Equilateral dispersion prisms are designed with three equal 60° angles to spatially separate light by different wavelengths. They can serve as an alternative to diffraction gratings, effectively dispersing white light into its constituent visible spectral components. These prisms are generally operated at the minimum deviation angle, a state where the target wavelength propagates parallel to the prism base, with the incident angle and exit angle symmetrically equal relative to the surface normal. Custom dispersion prism solutions are available to accommodate various application and technical specifications.
Parameters
| Material | As below |
| Dimension Tolerance | + 0.0/ -0.1 mm |
| Clear Aperture | 70% |
| Bottom Surface(adjacent to two datum planes) | Ground or Polished |
| Other Surface | Polish |
| Surface Quality | 40-20, 60-40 |
| Bevel | < 0.25 mm X 45° |
Model
| Size, L, mm | Material | Wavelength-Range | Minimum-Angle-of-Deviation |
| 10/25 | F4(CDGM) | 385 nm~2 um | 47.9°@633 nm |
| 15/20/25 | H-F4(CDGM) | 420 nm~2 um | 47.9°@633 nm |
| 10/20/25/40/50 | H-ZF13(CDGM) | 420 nm~2.3 um | 65.5°@633 nm |
| 10/25/30 | C2F2 single crystal | 180 nm~8 um | 31.6°@633 nm |
| 10/25 | ZnSe | 600 nm~16 um | / |