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Precision N-BK7 Right-Angle Prisms
Precision N-BK7 Right-Angle Prisms
Precision N-BK7 prisms offer λ/4 surface flatness and several AR coatings for the most demanding applications, such as interferometry or holography in the visible and near IR range.
- Precision N-BK7 Substrates
- 20-10 scratch-dig
- λ/4 surface flatness
- 4 AR coatings to improve transmission
- Excellent for beam bending and retroreflection See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 05BR08 | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 05BR08AR.14 | In Stock | ||||
| 05BR08AR.16 | In Stock | ||||
| 05BR08AR.18 | In Stock | ||||
| 05BR08AR.33 | In Stock | ||||
 | 10BR08 | In Stock | ||||
| 10BR08AR.14 | In Stock | ||||
| 10BR08AR.16 | In Stock | ||||
| 10BR08AR.18 | |||||
| 10BR08AR.33 | In Stock |
Specifications
- MaterialN-BK7
- Surface Quality20-10 scratch-dig
- Surface Flatnessλ/4 at 632.8 nm over the clear aperture
- Clear Aperture≥ central 80%
- Size Tolerance+0.00/-0.25 mm
- Chamfers0.25-0.50 mm face width
- Chamfers Angle Tolerance45° ±15°
- Cleaning
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.
N-BK7 for VIS and NIR Applications
N-BK7 is an excellent lens material for most visible and near infrared applications. It is the most common borosilicate crown optical glass, and it provides great performance at a good value. Its high homogeneity, low bubble and inclusion content, and straightforward manufacturability make it a good choice for transmissive optics.
High Quality Precision Prism Surfaces
Our precision prisms are polished to tight tolerances minimizing wavefront distortion. Tight surface quality tolerances minimize scatter and unwanted diffraction effects. These right angle prisms have a 20-10 scratch-dig surface quality, and a λ/4 surface flatness.
Broadband Visible Antireflection Coating
Our AR.14 broadband multilayer antireflection coating markedly improves the transmission efficiency of these lenses by reducing surface reflections over a 430-700 nm wavelength range. This AR coating performs effectively for multiple visible wavelengths and tunable lasers eliminating the need for several sets of optics.
Broadband Multilayer NIR Antireflection Coating
Our AR.16 coating is recommended for NIR applications in the 650-1000 nm range.
Broadband Multilayer IR Antireflection Coating
Our AR.18 coating is for IR applications in the 1000-1550 nm range.
1064 nm Laser Line Antireflection V-Coating
Our AR.33 laser line V-coating offers the lowest reflectance (maximum reflectivity per surface <0.25%, 0º-15º AOI) at 1064 nm for maximum transmission while maintaining high durability and high damage resistance. Valuable laser energy is efficiently transmitted rather than lost to surface reflection and scattering. The trade off to its superior performance is the minimal laser line wavelength range.
RoHS Compliant
These prisms have been tested for dangerous substances like Pb, Cd, Hg, Hex-Cr, PBB, and PBDE and have been found to be in compliance with RoHS allowable levels.
