Method of controlling printing process using a spectral measuring system comprising spatial light modulator

摘要

The measurement system a lighting channel through which light is illuminated on a measurement object (M) arranged in a measurement plane (MP). The lighting channel has a spatial light modulator (23) controlled by an electronic control unit (40) to generate a spatial lighting pattern to be selectively illuminated on measurement points of the measurement object. The light reflected by the measurement object is captured in the measuring channel. The light is converted into photoelectric energy.