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An economical large area touch panel was presented. Through a new type of optical path constituted by specially arranged mirrors and other optical devices, the one-dimensional imaging of an object on top of the touch panel surface can be captured by one-dimensional optical sensors such as CCD, CMOS or PSD and its position can be located. Simple optical structure, less component and improved processing speed through the use of one-dimensional optical sensors, makes it suitable to large-space touch panel applications.
Date of Conference: 11-12 May 2009