Optical detection system for motor-vehicles having multiple functions, including detection of the condition of the road surface

摘要

An optical detection system per motor-vehicles, suitable to detect the condition of the road surface on which the vehicle is travelling, comprising a photodetector unit composed of a camera having a matrix of pixels composed of photodetectors based on a photosensitive material suitable to detect both radiations in the visible and near infrared (NIR), i.e. having a wavelength comprised between 380 and 900 nanometres, and radiations in the short wavelength infrared (SWIR), i.e. having a wavelength comprised between 900 and 1700 nanometres. A matrix of filters (6) is placed only in front of one line, or some lines, of the matrix of photodetectors (4) which are dedicated to the detection of the condition of the road surface, complete information regarding the condition of the road surface being obtained when the vehicle is moving.