Publication

Holographic device or imager

Christophe Moser, Manon Rostykus
2018
Patents

Abstract

The present disclosure concerns a holographic system or device comprising at least one optical guiding element (100) configured to redirect light incident from a light source (101) to a target interference plane (103), wherein the optical guiding element includes at least one diffraction grating (104) configured to generate by diffraction at least one light beam from the incident light and to direct at least part of the at least one light beam towards the target interference plane.

Official source

https://infoscience.epfl.ch/entities/publication/38b9d580-689f-4fb1-8161-59da500117ba

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Christophe Moser, Manon Rostykus
2018
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/38b9d580-689f-4fb1-8161-59da500117ba

About this result

Related concepts (22)

Diffraction

Diffraction is the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture. The diffracting object or aperture effectively becomes a secondary source of the propagating wave. Italian scientist Francesco Maria Grimaldi coined the word diffraction and was the first to record accurate observations of the phenomenon in 1660.

Fraunhofer diffraction

In optics, the Fraunhofer diffraction equation is used to model the diffraction of waves when plane waves are incident on a diffracting object, and the diffraction pattern is viewed at a sufficiently long distance (a distance satisfying Fraunhofer condition) from the object (in the far-field region), and also when it is viewed at the focal plane of an imaging lens. In contrast, the diffraction pattern created near the diffracting object and (in the near field region) is given by the Fresnel diffraction equation.

Ray (optics)

In optics, a ray is an idealized geometrical model of light or other electromagnetic radiation, obtained by choosing a curve that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow. Rays are used to model the propagation of light through an optical system, by dividing the real light field up into discrete rays that can be computationally propagated through the system by the techniques of ray tracing. This allows even very complex optical systems to be analyzed mathematically or simulated by computer.

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