Device for recording holograms
AssigneeSeeReal Technologies S.A.
InventorsJean-Christophe Olaya, Grigory Lazarev
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Abstract
An apparatus for recording holograms on an optical medium, in particular on an optically addressable spatial light modulation device is disclosed. For this purpose, the apparatus comprises an illumination device for emitting light, an optical medium, an image source having at least one modulation element, and an arrangement of microlenses. In this case, the arrangement of microlenses is arranged at a distance from the optical medium in such a way that the image focal points of the microlenses lie on the optical medium, such that the hologram can be generated on the optical medium.
Claims19
An apparatus for recording holograms on an optical medium comprising
- an illumination device for emitting light;
- an optical medium;
- an image source having at least one modulation element;
- and
- an arrangement of microlenses, each of the microlenses comprising a field of view wherein a hologram can be generated,
- wherein the image source comprises a plurality of modulation elements embodied as controllable micromirrors or prisms, wherein the arrangement of microlenses is located between the image source and the optical medium and is arranged at a distance from the optical medium in such a way that image focal points of the microlenses lie on the optical medium, wherein each modulation element of the image source is assigned a single microlens of the arrangement of microlenses such that the hologram can be generated on the optical medium by angle-to-linear-conversion within regions of the optical medium which correspond to the field of view of the microlenses.
A method for recording holograms on an optical medium, light being guided from an illumination device onto a plurality of modulation elements embodied as controllable micromirrors or prisms of an image source, which modulates the light by setting the modulation elements in accordance with the hologram to be recorded, said light coming from the image source incidents on an arrangement of microlenses, which focuses the light into image focal points onto the optical medium, whereby the hologram is generated on the optical medium within regions of the optical medium which correspond to a field of view of the microlenses in dependence of the controllable micromirrors or prisms such that each modulation element is assigned to a single microlens to achieve angle-to-linear-conversion.
Dependencies are inferred from the claim text.