Littrow prisms are typically 30°/60°/90° prisms,with a reflective film coating on the beveled surface. Coated littrow dipersion prisms are used to deviate the line of sight by 60°.
Uncoated littrow dipersion prisms are used to disperse light into its component spectrum.angle.
Specifications
| Material | BK7, UV Fused Silica,Sapphire, ZnSe,Caf2,Si,Ge,etc. |
| Size | 0.5mm-300mm |
| Size tolerance | +/-0.1mm or customer request |
| Clear Aperture | >90% |
| S/D | 60-40 40-20 20/10 10/5 |
| Flatness | 1/4lambda at 632.80nm |
| Chamfer | 0.25mmx45° |
| Angle tolerance | <2’’,<3’’,<30’’,<1’,>3’ |
| Coating | AR, HR, Aluminum, Silver or customer request.
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