LiDAR 905nm Filter

Name: LiDAR 905nm Filter
Substrate material: Optical Glass
Smoothness: 80-50 MIL-C-48497A
Clear aperture: >90%
Edge chamfer: <0.2mm
Operating temperature: -40°C /+180°C (low stress state)
Storage environment: Constant temperature ~23°C; Constant humidity <40%

The reasons why LiDAR uses 905nm filter as laser light source are as follows:

1. 905nm wavelength laser technology is developing rapidly and there are many mature technical solutions for matching.

2. The laser beam emitted by 905nm filter propagates more stably in the air.

3. 905nm laser is currently cheaper than lasers using 1550nm filter as lens.

905nm Laser Filter Transmittance Spectrum

905nm filter.jpg

The technical maturity of LiDAR will directly affect the future prospects of autonomous driving. At present, domestic LiDAR manufacturers have entered the track of LiDAR to compete in the LiDAR market.

The 905nm band pass filter is the optical solution currently used by domestic MEMS solid-state LiDAR. The LiDAR light source used with the 905nm band pass filter has been used by domestic manufacturers to achieve a detection distance of more than 200 meters, and more manufacturers are still exploring the performance of the 905nm band.

905nm laser filter.jpg