Inverse confocal sensor based on a bidirectional OLED display

Bidirectional OLED-based microdisplays offer interesting possibilities for new applications. Light emission and detection is combined on one single chip by using OLED on CMOS technology. Such a chip has primarily been developed for optocouplers or photo-electric barriers, but it offers interesting possibilities for other fields. A new optical concept of an inverse confocal sensor based on bidirectional OLED Display will be presented.