Newport's VALUMAX® family of right-angle prisms were designed with the OEM customer or tight budget researcher in mind. Striking a balance between high performance and cost, these N-BK7 prisms offer λ/2 surface flatness at a lower cost than our standard N-BK7 prisms.
- Best value N-BK7 prisms for OEM applications
- λ/2 surface flatness
- Available uncoated or with aluminized hypotenuse
- For beam bending and retroreflection
- Sizes ranging from 5.0 to 50.8 mm See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | BRP-10 Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 10.0 mm, Uncoated | |||||
![]() | BRP-10-A Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 10.0 mm, Aluminized Hypotenuse | |||||
![]() | BRP-12.7 Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 12.7 mm, Uncoated | |||||
![]() | BRP-12.7-A Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 12.7 mm, Aluminized Hypotenuse | |||||
![]() | BRP-15 Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 15.0 mm, Uncoated | |||||
![]() | BRP-15-A Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 15.0 mm, Aluminized Hypotenuse | |||||
![]() | BRP-20 Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 20.0 mm, Uncoated | |||||
![]() | BRP-20-A Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 20.0 mm, Aluminized Hypotenuse | |||||
![]() | BRP-25.4 Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 25.4 mm, Uncoated | |||||
![]() | BRP-25.4-A Economy N-BK7 Right-Angle PrismsRight-Angle Prism, ValuMax, N-BK7, 25.4 mm, Aluminized Hypotenuse |
Features
Total Internal Reflection
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.
Optional Aluminized Hypotenuse
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, if there is an overcoat of black paint, it should be removed with acetone.
N-BK7 for VIS and NIR Applications
Accessories
Prism Clamp
PT-1C can be used as a clamp on top of the platform mirror mount.
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | PT-1C Prism Clamp, Platform Mounts |










