According to a recent report in Venture Development Corporation (VDC) , proximity and linear displacement sensor market in north American had a bright prospect. VDC forecast, as the economic conditions' improvement in America and the devices' being used more and more widely in all kinds of products and equipment on execution monitoring function,proximity and linear displacement sensor market in North America will remain growing positively . 

　　Overall, these devices are mainly used in industrial automation applications, but many devices are also used in HVAC, medical, measurement, military/air, office automation, print, safety equipment and transport and other aspects. Use these position sensor is the result of better performance, such as accuracy and efficiency improvement, function, running faster, higher productivity and better quality control. 

        North American laser systems market is expected to be the fastest growing linear displacement sensor field,and compound annual growth rate is expected to reach 8.5% in 2007.Laser proximity and linear displacement sensor has long distance effect and it can detect small target.