Laser Radar Windows are high-performance optical windows specifically designed for LiDAR (Light Detection and Ranging) systems. These windows provide a protective optical interface while ensuring exceptionally high transmission of the operating laser wavelength and minimal signal distortion.
LiDAR systems used in autonomous vehicles, mapping, navigation, and environmental monitoring rely on optical windows that maintain clarity, durability, and spectral accuracy. SOT’s laser radar windows are manufactured using advanced coating technologies to achieve excellent transmission at common LiDAR wavelengths—850 nm, 905 nm, 940 nm, and 1550 nm—while resisting abrasion, humidity, temperature cycling, and chemical exposure.
Key Features
- Optimized for LiDAR Systems – Engineered for laser radar and distance-measurement applications with minimal signal loss
- High Transmittance – Tave ≥ 99% at key LiDAR wavelengths for maximum system efficiency
- Multi-Wavelength Support – Standard designs for 850 nm, 905 nm, 940 nm, and 1550 nm
- Hard Coating Durability – Scratch-resistant, environmentally robust coatings for long service life
- Customizable Optical Properties – Wavelength band, coating design, AOI, and size tailored to your system
- Reliable in Harsh Environments – Stable optical performance in outdoor, automotive, and industrial conditions
Spectrum Transmission
Standard laser radar windows are optimized for narrow LiDAR operating bands with flat, high transmission across the working wavelength range.
Custom transmission ranges and AOI designs are available upon request to match your LiDAR architecture.

Coating Parameters
| Parameter | Value |
|---|---|
| Transmittance | T ≥ 99% |
| Transmission Wavelength (CWL) | 850 ± 15 nm, 905 ± 15 nm, 1535 ± 15 nm, 1550 ± 15 nm (selection based on customer’s requirements) |
| Incidence Angle | Convention 0° (customizable) |
| Note | Conductive films can be coated, and the sheet resistance requirements can be customized. |
Applications
- Autonomous Vehicles & ADAS – High-accuracy LiDAR sensing and object detection
- Geophysical Surveying – Terrain mapping and environmental analysis
- Industrial Automation – Laser-based inspection, sorting, and measurement systems
- Defense & Security – Surveillance and laser radar monitoring
- Environmental Monitoring – Vegetation analysis, forestry, and pollution tracking
- Aerospace – Airborne LiDAR for navigation, safety, and terrain mapping
Need a custom LiDAR optical window?
Contact us with your operating wavelength, AOI, window size, environmental conditions, and coating requirements for a tailored LiDAR solution.