SFH4640

Narrow Beam Led In Midled Package

Introduction

Touchscreens as a popular user interface are more and more common. Applications span from public information systems to customer self-service terminals. Thus, as a logical step, more and more devices today feature this kind of user interface, e.g. bank automatic teller machines ATMs, personal digital assistants PDAs, mobile phones and PC displays. The widespread popularity is actively supported by standard computer based operating systems, like e.g. Windows®7.

The rapid development of CMOS imaging sensors and the development of high power infrared IR emitters in slim packages have led to a series of new optical touchscreen technologies. Many of them contain proprietary technology and solutions.