The BRP-10 VALUMAX® Right-Angle Prism is ideal for beam bending and retroreflection applications. It is often used instead of mirrors in applications where deformation of the reflective surface may cause a problem. The fine balance between performance and cost has been optimized, making this prism ideal for OEM applications in the visible and near infrared. By means of total internal reflection (TIR), a right-angle prism may be used as a 90° reflector or as a 180° retroreflector. Except for reflection losses from the entry and exit faces, TIR exhibits 100% reflectivity over a very broad wavelength range. The reflecting surface should be coated with protected aluminum if the incidence angle exceeds that acceptable for TIR or if the environment does not allow the reflecting surface to be kept clean, as TIR requires. The hypotenuse can also be used as a first surface reflector. In this case, the overcoat of black paint should be removed with acetone. This uncoated 10 x 10 mm prism is 10 mm thick and can be conveniently mounted and positioned on Newport holders.
| Model | BRP-10 |
|---|---|
| Type | Right Angle Prism |
| Dimensions, A=B=C | 10.0 mm |
| Material | Grade A BK7 |
| Antireflection Coating | Uncoated |
| Surface Flatness | ≤λ/2 at 632.8 nm over the clear aperture |
| Surface Quality | 60-40 scratch-dig |
| Damage Threshold | Aluminized hypotenuse, 100 W/cm2 CW, 10 mJ/cm2 with 10 nsec pulses, typical |
| Clear Aperture | Central diameter, >85% of dimension |
| Chamfers | 0.25–0.50 mm face width |
| Chamfers Angle/Tolerance | 45° ±15° |
| Size Tolerance | +0/-0.25 mm |
| Coating | Uncoated |
| Coating Protection | Uncoated or hypotenuse coated with protected aluminum and overcoated with black paint (remove with acetone for first surface mirror) |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended |
