Germany's Fraunhofer institute has been touting their bi-directional OLED microdisplays for quite some time, and now they are showing a new version that doubles as a dimensional sensor. To create a bi-directional display, Fraunhofer placed photodiodes between the OLED pixels. These microdisplays can be used as dimensional sensorics for surface characterization (distance or inclination sensors).
"By inverse-confocal imaging approach a point-source sensor with purely electronic scanning allows extremely compact sensor modules", explains Constanze Grossmann from Fraunhofer IOF. "This opens completely new opportunities for machine integration."