Description
The Shape Optics Infrared (IR) Beam Splitter is a precision-coated optical component designed to efficiently divide incident light into transmitted and reflected paths across distinct infrared and near-infrared wavelength bands. Optimized for 45° angle of incidence (AOI), this beam splitter enables stable and predictable spectral separation, making it ideal for advanced sensing, thermal imaging, and laser-based systems.
This design features high transmission in the mid- to long-wave infrared (MWIR–LWIR) region and high reflection in the near-infrared (NIR) region, with a well-controlled transition band centered at 2600 nm, ensuring clean spectral discrimination and minimal crosstalk.
Key Specifications
- Dimensions
- Diameter: 30 mm (+0 / −0.2 mm)
- Thickness: 1.0 mm ±0.2 mm
- Optical Performance @ 45° AOI
- Transmission: >90% average from 3 µm to 15 µm
- Reflection: >70% average from 1 µm to 3 µm
- Transition Band: Centered at 2600 nm
Optical Properties & Performance
1. Spectral Separation
- Precisely engineered multilayer dielectric coating enables sharp wavelength separation between reflected NIR and transmitted IR bands.
- Transition band centered at 2600 nm provides controlled roll-off for systems requiring distinct signal routing.
2. Angle-Specific Optimization
- Designed specifically for 45° AOI, ensuring stable spectral performance in folded or compact optical layouts commonly used in IR instruments.
3. High Efficiency
- High average transmission (>90%) in the 3–15 µm range supports thermal and infrared imaging systems where signal throughput is critical.
- Strong reflection (>70%) in the 1–3 µm band allows efficient redirection of NIR laser or illumination sources.
4. Mechanical & Environmental Stability
- Thin substrate design supports lightweight optical assemblies.
- Coating durability suitable for laboratory, industrial, and field-deployed IR systems.
Applications
- Thermal Imaging Systems: Separates NIR alignment or illumination beams from MWIR/LWIR thermal signals.
- IR Laser & Measurement Systems: Enables beam routing, monitoring, and reference splitting in multi-wavelength laser setups.
- Spectroscopy: Useful in systems requiring division of excitation and emission bands across NIR and IR regions.
- Optical Sensing & Detection: Allows simultaneous use of NIR sensors and IR detectors within a single optical path.
- Defense & Aerospace Optics: Suitable for compact, angle-sensitive IR optical architectures requiring high reliability.
Advantages
- Clean spectral separation with a well-defined transition band
- High transmission and reflection efficiency at design wavelengths
- Optimized for compact 45° optical layouts
- Custom wavelength ranges, AOI, and coating designs available upon request
