Koninklijke Philips Corporation N.v.

Trumpf Photonic Components Gmbh

Lumileds LLC

Meng Han

Holger Joachim Moench

Alexander Marc Van Der Lee

Mark Carpaij

Marcel Franz Christian Schemmann

Albrecht Kraus

Stefan Schwan

Kang Lu

Ping Wu

Felix Chen

Huayun Feng

Yiwen Lu

The invention is related to a laser diode based multiple beam laser spot imaging system for characterization of vehicle dynamics. A laser diode based, preferably VCSEL based laser imaging system is utilized to characterize the vehicle dynamics. One or more laser beams are directed to the road surface. A compact imaging system including an imaging matrix sensor such as a CCD or CMOS camera measures locations or separations of individual laser spots. Loading status of vehicles and vehicles' pitch and roll angle can be characterized by analyzing the change of laser spot locations or separations.

Laser diode based multiple-beam laser spot imaging system for characterization of vehicle dynamics

A security system is described, comprising a sensor module () which accommodates a laser sensor () working with self-mixing interference. The laser sensor () generates measurement data which are related to the velocity of an object such as the body of a human being and, optionally, the distance between the laser sensor () and the object. Dependent on the measurement data assembled by the laser sensor () and supplied to a control circuit () such as an airbag computer, the airbag computer activate security means such as an airbag ()in order to prevent injuries of the human body. Furthermore, a method of driving such a security system is described.

Security system comprising a self-mixing laser sensor and method of driving such a security system

The invention is related to laser diode based self-mixing laser sensors for simplified vehicle stability control. Vehicle's side slip angle, front and rear tire slip angles, yaw rate and lateral acceleration rate are derived explicitly from self-mixing laser sensors. Three criteria based on yaw rate, turn radius and tire slip angle analysis are employed to detect the occurrence of understeer or oversteer, which enables simplified vehicle electronic stability program.

Laser diode based self-mixing sensor for a vehicle electronic stability program

A sensor module () for measuring the distance to a target and/or the velocity of the target (), the sensor module () comprising at least one laser source (), at least one detector () being adapted to detect modulated laser light and at least one control element the control element () being adapted to vary the focus point of the laser light and/or the intensity of the laser light and/or the direction of the laser light. The control of the laser light emitted by the laser source () either by active optical devices as variable focus lenses or controllable attenuators or passive optical elements in combination with arrays of laser sources () and detectors () enable flexible and robust sensor modules.

Laser sensor system based on self-mixing interference

Growing community of inventors

Aachen, Germany

Meng Han