Spatial light modulator device for the modulation of a wave field with complex information
AssigneeSeeReal Technologies S.A.
InventorsGerald Futterer, Norbert Leister, Ralf Haussler, Grigory Lazarev
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Abstract
A three-dimensional light modulator, of which the pixels are combined to form modulation elements. Each modulation element can be coded with a preset discrete value such that three-dimensionally arranged object points can be holographically reconstructed. The light modulator is characterized in that assigned to the pixels of the modulator are beam splitters or beam combiners which, for each modulation element, combine the light wave parts modulated by the pixels by means of refraction or diffraction on the output side to form a common light beam which exits the modulation element in a set propagation direction.
Claims15
A complex spatial light modulator comprising:
- a polarization phase modulator which modifies incident light and separates the incident light into a first beam having a first polarization and a first phase, and a second beam having a second polarization and a second phase, and which outputs the first beam and the second beam;
- and
- a beam synthesizer comprising a prism structure formed of an optical anisotropic material, the optical anisotropic material having a first refractive index with respect to the first beam having the first polarization and a second refractive index, different from the first refractive index, with respect to the second beam having the second polarization, where the beam synthesizer combines the first beam and the second beam and outputs a beam.
Dependencies are inferred from the claim text.