FIELD OF THE INVENTION

The present invention relates generally to a vehicle vision system for a vehicle and, more particularly, to a vehicle vision system that utilizes one or more cameras at a vehicle.

BACKGROUND OF THE INVENTION

Use of imaging sensors in vehicle imaging systems is common and known. Examples of such known systems are described in U.S. Pat. Nos. 5,949,331; 5,670,935 and/or 5,550,677, which are hereby incorporated herein by reference in their entireties. Various cameras have been proposed for such imaging systems, including cameras of the types described in U.S. Pat. No. 7,965,336 and U.S. Publication No. US-2009-0244361, which are hereby incorporated herein by reference in their entireties.

SUMMARY OF THE INVENTION

The present invention provides a driver assistance system or vision system or imaging system for a vehicle that utilizes one or more cameras (preferably one or more CMOS cameras) to capture image data representative of images exterior of the vehicle, and provides stanchions or posts or attachment elements for mounting the printed circuit board at the camera housing or lens holder, with the stanchions or posts or attachment elements comprising a material having a coefficient of thermal expansion (CTE) that is very low (such as less than about 5 ppm/° C.), and that is lower than the CTE of the housing and circuit board. When the camera is disposed at the vehicle and exposed to a high or low temperature, the stanchions or posts or attachment elements function to increase or decrease movement of the circuit board to accommodate temperature-induced movement of the lens relative to the imager to maintain focus of the lens at the imager.

These and other objects, advantages, purposes and features of the present invention will become apparent upon review of the following specification in conjunction with the drawings.

