METHOD AND DEVICE FOR GENERATING MULTISPECTRAL OR HYPERSPECTRAL LIGHT, FOR HYPERSPECTRAL IMAGING AND/OR FOR DISTANCE MEASUREMENT AND/OR 2D OR 3D PROFILE MEASUREMENT OF AN OBJECT BY MEANS OF SPECTROMETRY

摘要

The invention relates to methods and to devices for generating multispectral illuminating light having an addressable spectrum, for adaptive multispectral imaging and for capturing structural and/or topographical information of an object or of the distance to an object. The illuminating device comprises a multispectral light source and a modulator for temporal modulation of the individual spectral components of the multispectral light source having modulation frequencies, modulation frequency ranges and/or modulation sequences which are different from one another in each case. The multispectral light source comprises (i) at least one light source (10) having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means (12) or (ii) an assembly or array of monochromatic or quasi-monochromatic light sources having emission wavelengths or emission wavelength bands which are different from one another in each case. The modulator comprises (i) at least one electrically controllable three-dimensional light modulator (14) or (ii) a plurality of electronic control modules assigned to the individual monochromatic or quasi- monochromatic light sources. The illuminating device further comprises optical means (18) for assembling the individual modulated spectral components, in order to form the multispectral illuminating light (24) having an addressable spectrum.