Leading Laser LiDAR Optical Filter China Manufacturer
LiDAR (Light Detection and Ranging) is a technology that uses laser beams for distance measurement and imaging. It has widespread applications across various fields, including autonomous driving, terrain mapping, environmental monitoring, agriculture, construction, and archaeology. LiDAR systems have very strict spectral requirements for optical filters, primarily to ensure measurement accuracy and improve the system’s resistance to interference.

Laser LiDAR Optical Filter Series
Coligh can offer Laser LiDAR Optical Filter with the features below:
- Standard filters available with multiple wavelength and bandwidth options.
- Bandpass filters with a wide range of customizations, including radar filters with incident angles ranging from 0° to 60°, and reflective mirror with incident angles from 0° to 80°.
- High transmittance across wide incident angles, ensuring exceptional light transmission performance.
- Bandwidth customization options as narrow as 1nm.
Why Choose Coligh LiDAR Interference Filter to Laser LiDAR Sensor
1. Rich experience in designing typical Laser LiDAR wavelength: 905nm filters, 940nm filters, 1550nm filters, 1064nm hard coating Laser LiDAR Optical Filter
2. Coligh can provide highly customized LiDAR filters to meet customers’ needs for different wavelengths, bandwidths and optical performance. Customization can ensure that the filter is perfectly matched to the customer’s LiDAR system.
3. The consistency between batches is highly consistent, with spectral differences controlled within 1nm
4. Coligh uses high-quality optical glass and advanced coating technology to ensure that the filters have strong environmental adaptability. This allows them to maintain consistent performance in changing environments, enhancing the sensor’s ability to detect obstacles and pedestrians.
Coligh Optical Filter For Laser LiDAR Sensor Applications

Autonomous Driving
LiDAR optical filters can effectively suppress stray light, improve the signal quality of LiDAR, enhance ranging accuracy, and provide precise environmental perception. This allows LiDAR to function properly even in complex environments.

Aerospace and Space
In aerospace and space applications, LiDAR optical filters are mainly used in airborne LiDAR systems and satellite laser ranging systems. They help reduce stray light in the atmosphere and enhance the laser signal.

Topographic Mapping
LiDAR optical filters can be used in LiDAR sensors for airborne, terrestrial, and marine geographic information systems to optimize LiDAR detection, enabling precise measurement of terrain, buildings, and other features.

Robotics and Automation
In drones, logistics robots, industrial robots, and other fields, LiDAR optical filters help improve environmental perception, avoid obstacles, reduce reflected interference, and enhance the detection capability of LiDAR systems.
FAQs
Coligh can provide highly customized LiDAR optical filters to meet customers’ varying wavelength, bandwidth, and optical performance requirements. Customization ensures that the filters perfectly match the customer’s LiDAR system.
The transmission rate of LiDAR optical filters directly impacts the radar system’s ranging accuracy. Our filters are made using high-quality optical materials and advanced coating technology, ensuring high transmission in the required wavelength range. Our filters can achieve transmission rates of 98-99%.
Most filter suppliers in China can only achieve an incidence angle range of 0-35 degrees, but they cannot guarantee the transmission of the center wavelength with varying angles. The center wavelength and transmission may experience significant deviation with angle changes. Coligh can produce filters with an incidence angle range of 0-85 degrees, ensuring that the center wavelength or reflection wavelength remains high transmission or high reflection despite angle variations.
Through advanced production processes and high-precision optical testing equipment, our filter yield rate is high, allowing us to ensure the optical stability and consistency of each filter.
We can provide samples of our stock LiDAR filters for testing. Due to the high yield rate of our filters, our costs are lower compared to other manufacturers, and we are able to produce filters in bulk at an acceptable price.