Patent ID: 6501536
Filing Date: 2002-12-31
Classification: B60R

Abstract:
A method of determining the eye location of an occupant of a vehicle seated in a seat position along a vertical fore-aft seat adjustment plane of the vehicle having reference, predetermined planar Cartesian coordinates comprising the steps of:emitting a light beam pair comprising a right eye light beam and a left eye light beam in a light beam pair direction from a vehicle light source position; adjusting the light beam pair direction in relation to a defined reference light beam direction about light beam adjustment axes having predetermined light beam adjustment Cartesian coordinates located outside the fore-aft seat plane until the light beam pair intersects the vertical fore-aft seat adjustment plane at an angle of adjustment so that a predetermined intensity of the right eye light beam is seen by the right eye of the occupant and a predetermined intensity of the left eye light beam is seen by the left eye of the occupant; measuring the angle of adjustment of the light beam pair and providing a measured angle of adjustment; and deriving the eye location of the occupant within the fore-aft seat plane from the measured angle of adjustment of the light beam pair and from the predetermined Cartesian coordinates of the fore-aft seat plane and the light beam adjustment axes.