LiDAR Polygon Mirror

LiDAR Polygon Mirror for Projection Display

LiDAR Polygon Mirrors are essential components for mechanical scanning in LiDAR systems. The sensing range, number of beam lines, resolution, repeatability, and scan angle are all critical attributes of the mirror. Polygon mirror products from Materion Balzers Optics provide optimum scanning performance for LiDAR sensors. Our coating technology and integration solutions enable your LiDAR system to achieve outstanding optical and durability performance. We have optimized coating designs for large incidence of angles (AOI) to provide excellent reflectivity and consequently increases the LiDAR's the field of view (FOV) and detection distance. Materion Balzers Optics is also able to integrate a rotational solution to achieve an excellent scanning resolution as a package. Materion Balzers Optics technology is flexible in handling various substrate geometries and materials, enabling your LiDAR system to realize specific design targets.

Benefits

• High reflectivity coating technology specific for LiDAR polygon mirror
• Covering NIR&SWIR wavelengths from 840nm to 1600nm
• Full area coating solution for each facet
• Excellent surface profile to achieve high resolution scanning performance
• Excellent surface accuracy
• Integration solution including motor assembly and balancing
• Excellent environmental durability for automotive applications

Applications

• Automotive LiDAR
• Laser 3D Scanning

Technical Data

Wavelength range 840 nm - 1600 nm
AOI 12 - 80°

Reflectance

Rs>= 97 % in the 880 - 940nm at AOI=12 - 80°
Rp>= 97 % in the 880 - 940nm at AOI=12 - 80°
Rs>= 97 % in the 1500 - 1600nm at AOI=12 - 80°
Rp>= 97 % in the 1500 - 1600nm at AOI=12 - 80°

Surface Accuracy

PV<1.5λ @633nm

Profile

Appearance tolerance ±0.1mm
Parallelism <0.02mm
Perpendicularity <0.02mm

Dimensions

Customized, typical 50 x 50 x 50mm

Environmental Durability

High temp: -40°C - 95°C 20minutes/cycle for 200 cycles
Thermal Shock: +85°C, RH: 85 - 95% for 24 hours
Humidity : +40°C, RH: 100% for 16 days
Salt spray(Fog): 35°C ±2°C 24h,4.5%NaCl