Optical distance sensor has light source and single projection grid with defined grid period, and also has periodic detector arrangement and evaluation unit, where light source irradiates projection grid in divergent manner

摘要

The optical distance sensor has a light source (1), a single projection grid (2) with a defined grid period (T1). The sensor also has a periodic detector arrangement (3) and an evaluation unit (4). The light source irradiates the projection grid in a divergent manner. A periodic fringe pattern with a defined fringe pattern period results in a level of the detector arrangement without interposition of an imaging optical system.