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

US10066997B2 · kind B2 · utility

Assignee

• UNIVERSITAT STUTTGART · DE

Inventors

• Klaus Körner · Berlin, DE
• Wolfgang Osten · Lilienthal, DE
• Tobias Boettcher · Balingen, DE
• Wolfram Johannes Martin Lyda · Mössingen, DE
• Marc Gronle · Stuttgart, DE

Key dates

• Filing date: Feb 17, 2015
• Grant date: Sep 4, 2018
• Expiry date: Feb 17, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2003/2826
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

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. The multispectral light source comprises at least one light source having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means, or 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 at least one electrically controllable three-dimensional light modulator, or a plurality of electronic control modules assigned to the individual monochromatic or quasi-monochromatic light sources.