T-PS855 - N-SF11 Equilateral Dispersive Prism, 40 mm
T-PS855 - N-SF11 Equilateral Dispersive Prism, 40 mm
N-SF11 is a flint glass that offers excellent performance in the visible and NIR spectral range. It offers a high refractive index and low Abbe number, making it excellent for use in an equilateral dispersive prism.
Polarization Effects
For P-Polarized light (blue line) incident on a dispersing prism at the angle of least deviation, the graph to the right shows that only a small percentage of the P-polarized light is reflected at the surface. Thus, for this polarization, the transmission through a prism fabricated from N-SF11, a RoHS-compliant version of SF11, will be excellent even though there is no AR coating on the surface.
| Material | Minimum Angle of Deviation |
Vdb | Surface Flatness @ 633 nm |
Clear Aperture |
Surface Quality |
Angular Tolerance |
Number of Polished Faces |
Index of Refraction Plot |
|---|---|---|---|---|---|---|---|---|
| N-SF11 | 65.5° @ 633 nm | 24.76 | λ/10 | 70% | 40-20 Scratch-Dig | ±5 arcmin | 2 | Click |