Beamsplitter Plates VIS-NIR, Circular
LINOS® Circular VIS-NIR beamsplitter plates are designed for precise splitting or combining of beams in broadband photonic systems, covering the spectral range from 450 to 1000 nm. Each plate is constructed from high-quality N-BK7 glass and features a second-surface broadband AR coating to minimize reflections and maximize transmission efficiency. Standard models provide balanced 50:50 reflectance and transmittance for unpolarized light at 45° incidence, while versions with a wedge are available to eliminate etalon effects.
These plates are ideal for spectroscopy, imaging, and laser applications, offering reliable, low-loss performance and consistent optical behavior. For larger quantities or specific needs such as alternative sizes, materials, or coatings, we can provide customized versions. Please contact us to discuss tailored solutions.
| Product | Beamspl. Pl. VIS-NIR; D=22.4; T=50 | Beamspl. Pl. VIS-NIR; D=25.4; T=50 | Beamspl. Pl. VIS-NIR; D=40; T=50 | Beamspl. Pl. VIS-NIR; D=50; T=50 |
| Weight (kg) | 0.019 | 0.03 | ||
| Shape | Rectangular | Circular | Circular | Circular |
| Optic Size | Ø 22.4 mm | Ø 25.4 mm | Ø 40.0 mm | Ø 50.0 mm |
| Substrate | N-BK7 | N-BK7 | N-BK7 | N-BK7 |
| Optic Center Thickness | 3.0 mm | 5.0 mm | 6.0 mm | 6.0 mm |
| Parallelism | 30.0 | 30.0 | 30.0 | 30.0 |
| Clear aperture | Ø 20.0 mm | Ø 24.0 mm | Ø 38.0 mm | Ø 48.0 mm |
| Wavelength Range | 450.0 - 1000.0 nm | 450.0 - 1000.0 nm | 450.0 - 1000.0 nm | 450.0 - 1000.0 nm |
| Tolerance Ø | -0.13 mm | -0.15 mm | -0.16 mm | -0.16 mm |
| Center thickness tolerance | ± 0.3 mm | ± 0.1 mm | ± 0.3 mm | ± 0.3 mm |
| Flatness back surface (λ) | 1/2 | 1/2 | 1/4 | 1/2 |
| Transmission (%) (Unpolarized) at Design Wavelength | 50.0 | 50.0 | 50.0 | 50.0 |
| Reflectivity | 50.0 | 50.0 | 50.0 | 50.0 |
| Flatness (λ) | 1/4 | 1/4 | 1/10 | 1/5 |
| Angle of Incidence (AOI) | 45 deg | 45 deg | 45 deg | 45 deg |
| Coating Specification |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
For splitting or combining beams designed for 450-1000 nm, enabling flexible beam routing and interferometric setups
Also available with a wedge to eliminate etalon effects
N-BK7 glass, ensuring high optical quality and reliable performance
Second surface broadband AR-coated (VIS-NIR, 450–1000 nm), reducing reflection losses and improving transmission efficiency
Reflectance = 50 ± 5 % for unpolarized light, enabling balanced beam splitting
Transmittance = 50 ± 5 % for unpolarized light, providing consistent output power in both beam paths
AOI = 45°, facilitating easy alignment in standard optical configurations
Customized options are available for larger quantities. Please contact us for a tailored quote.
| Product | Beamspl. Pl. VIS-NIR; D=22.4; T=50 | Beamspl. Pl. VIS-NIR; D=25.4; T=50 | Beamspl. Pl. VIS-NIR; D=40; T=50 | Beamspl. Pl. VIS-NIR; D=50; T=50 |
| Weight (kg) | 0.019 | 0.03 | ||
| Shape | Rectangular | Circular | Circular | Circular |
| Optic Size | Ø 22.4 mm | Ø 25.4 mm | Ø 40.0 mm | Ø 50.0 mm |
| Substrate | N-BK7 | N-BK7 | N-BK7 | N-BK7 |
| Optic Center Thickness | 3.0 mm | 5.0 mm | 6.0 mm | 6.0 mm |
| Parallelism | 30.0 | 30.0 | 30.0 | 30.0 |
| Clear aperture | Ø 20.0 mm | Ø 24.0 mm | Ø 38.0 mm | Ø 48.0 mm |
| Wavelength Range | 450.0 - 1000.0 nm | 450.0 - 1000.0 nm | 450.0 - 1000.0 nm | 450.0 - 1000.0 nm |
| Tolerance Ø | -0.13 mm | -0.15 mm | -0.16 mm | -0.16 mm |
| Center thickness tolerance | ± 0.3 mm | ± 0.1 mm | ± 0.3 mm | ± 0.3 mm |
| Flatness back surface (λ) | 1/2 | 1/2 | 1/4 | 1/2 |
| Transmission (%) (Unpolarized) at Design Wavelength | 50.0 | 50.0 | 50.0 | 50.0 |
| Reflectivity | 50.0 | 50.0 | 50.0 | 50.0 |
| Flatness (λ) | 1/4 | 1/4 | 1/10 | 1/5 |
| Angle of Incidence (AOI) | 45 deg | 45 deg | 45 deg | 45 deg |
| Coating Specification |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
1x T:R=50:50±5% @400-1000 nm 1x AR coated |
For splitting or combining beams designed for 450-1000 nm, enabling flexible beam routing and interferometric setups
Also available with a wedge to eliminate etalon effects
N-BK7 glass, ensuring high optical quality and reliable performance
Second surface broadband AR-coated (VIS-NIR, 450–1000 nm), reducing reflection losses and improving transmission efficiency
Reflectance = 50 ± 5 % for unpolarized light, enabling balanced beam splitting
Transmittance = 50 ± 5 % for unpolarized light, providing consistent output power in both beam paths
AOI = 45°, facilitating easy alignment in standard optical configurations
Customized options are available for larger quantities. Please contact us for a tailored quote.