Infrared LEDs for Vehicle Safety

In-cabin sensing is evolving from a mere comfort feature to a crucial component of vehicle safety systems. ams OSRAM is strategically positioning its OSLON Black IR:6 C-Series infrared LEDs for camera-based driver and occupant monitoring applications, emphasizing the significance of low-visibility illumination within the vehicle cabin.

For readers of eeNews Europe, this advancement holds relevance as in-cabin sensing is progressively becoming a mandatory design element for upcoming vehicle platforms. It also sheds light on how optoelectronics suppliers are tackling practical challenges such as nighttime performance, driver distraction, and system acceptance.

Monitoring transitions to the interior

While driver assistance systems have traditionally concentrated on external road conditions, the focus of vehicle sensing is now shifting inward. In-cabin sensing systems have the capability to detect driver fatigue or distraction, verify passenger presence, and facilitate features like child or pet detection in the rear seat.

“In-Cabin Sensing goes beyond being a mere technological trend,” notes Tobias Hofmeier, Product Marketing Manager at ams OSRAM. “It embodies a sense of responsibility in road traffic. By enabling vehicles to better comprehend activities within the cabin, they can play a crucial role in enhancing occupant safety, especially in critical situations where every second counts.”

These systems rely on cameras and infrared illumination to identify faces, gaze direction, and occupant behavior under varying lighting conditions. This necessitates the infrared source to offer consistent illumination without being conspicuous or causing distractions to individuals inside the vehicle.

Minimizing red glow at 940 nm

The OSLON Black IR:6 C-Series features high-power 940 nm infrared LEDs tailored for camera-based in-cabin applications. According to ams OSRAM, these LEDs mitigate the red glow effect, which might otherwise be visible from infrared light sources and prove bothersome during nighttime driving.

By addressing this effect at the chip level, user acceptance could be enhanced while ensuring the illumination remains suitable for driver and occupant monitoring purposes. The LEDs are specifically designed for applications like driver monitoring, occupant monitoring, and child presence detection.

ams OSRAM also envisions future applications such as medical emergency detection, cognitive state monitoring, and identification of intoxication or impairment. While these functionalities hinge on broader sensor, software, and regulatory advancements, they offer insights into the future trajectory of in-cabin sensing solutions. The OSLON Black IR:6 C-Series, also known as OSLON Black SFH 472XXCS A01, is available with various emission angles and optical configurations.