ADAS

Radar sensors use radio waves to generate data for alerts and safety maneuvers like automatic emergency braking, adaptive cruise control and blind spot monitoring. Trends include sensor miniaturization and fusion, use of higher-frequency millimeter wave units and 4D digital radar. SABIC’s materials help to enable new designs and better resolution. Glass fiber-reinforced LNP THERMOCOMP compounds feature super-low warpage that allows for thinner radar covers for improved signal transmission, and helps sensors remain in focus to optimize visuals. High radio frequency (RF) absorption of LNP STAT-KON compounds helps increase detection range. LNP FARADEX™ compounds shield against “noise” from other ADAS sensors, and high-heat ULTEM resins enable radomes to be defrosted in bad weather.

Automotive cameras are used alone and with other ADAS units to eliminate blind spots during backing and parking; monitor driver and passenger behavior; and power adaptive speed/cruise control. ADAS camera designers seek materials that can help deliver excellent image quality for accurate detection in different weather, lighting and temperature conditions. ULTEM resins are well suited for camera lens systems, including lens barrels and lens spacers, where they can provide IR transparency and resistance to high heat, chemicals and UV light. Importantly, ULTEM resins remain dimensionally stable under harsh conditions to help optimize accuracy and support consistent operation.

Because automotive LiDAR units depend on an unobstructed line-of-sight to send and receive laser light pulses, units are being embedded in headlamps and front and rear fascias. Embedding also helps maintain the vehicle’s aerodynamic design. However, this approach exposes the unit to environmental stresses that can affect useful life and performance. To protect LiDAR components from weather, temperature extremes and road debris, SABIC offers specialized materials. For the front cover and barrel lens, LEXAN SLX and LEXAN CXT copolymer resins can provide IR transparency and cold temperature impact, while high-heat ULTEM resins can supply dimensional stability and lead-free reflow soldering capability. For potential applications such as back and side covers, LNP THERMOCOMP compounds and NORYL resins provide low warpage and UV stability.