METHOD OF MAKING HOLOGRAMS USING LIQUID CRYSTAL MASTERS

An optical device includes one or more volume phase holographic gratings each of which includes a photosensitive layer whose optical properties are spatially modulated. The spatial modulation of optical properties are recorded in the photosensitive layer by generating an optical interference pattern...

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Bibliographic Details
Main Authors ECKERT, Rolf, MONTFORT, Frédéric, ZIEGLER, David Thomas
Format Patent
LanguageEnglish
French
German
Published 16.10.2024
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHIC PROCESSES OR APPARATUS
HOLOGRAPHY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAPHY
PHYSICS
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Summary:An optical device includes one or more volume phase holographic gratings each of which includes a photosensitive layer whose optical properties are spatially modulated. The spatial modulation of optical properties are recorded in the photosensitive layer by generating an optical interference pattern using a beam of light and one or more liquid crystal master gratings. The volume phase holograms may be configured to redirect light of visible or infrared wavelengths propagating in free space or through a waveguide. Advantageously, fabricating the volume phase holographic gratings using liquid crystal master grating allows independent control of the optical function and the selectivity of the volume phase holographic grating during the fabrication process.
Bibliography:Application Number: EP20220816796