Driver monitoring can warn a fatigued driver to pull over and rest and also supports other ADAS (Advanced Driver Assistance Systems) features like lane departure warning and switching between autonomous and manual driving mode. In extreme cases, such as drunk driving, it can disable the vehicle. Until now the technology has been wrought with visibility limitations at 940 nm infrared wavelengths.
Osram and Advanced Vision Systems developed a new camera system that is now available for original equipment manufacturers. The system combines an Osram emitter with an Advanced Vision Systems camera to create the first infrared camera with exceptional image quality in visible, 400-700 nm, and near infrared, 940 nm, spectrums. Normally this technology would require two different cameras and alternating filters.
“We developed special automotive qualified IR emitters that enable Advanced Vision Systems to find the right balance between required illuminations for both camera and eye safety,” said Rajeev Thakur, Infrared Product Marketing Manager of Osram Opto Semiconductors.
Driver monitoring technology uses an IR camera with active illumination. The camera is mounted inside the vehicle and positioned towards the face of the driver in order to monitor their eyes, nose and face. Active illumination from Osram IR 940 nm high power stack emitters, as used in the IR Oslon, provides light not perceptible by the human eye. The light is reflected from the driver’s face and captured by the image sensor.