Stimulus-responsive dynamic meta-holographic device
AssigneePostech Academy-Industry Foundation
InventorsJun Suk Rho, In Ki Kim, Won Sik Kim, Young Ki Kim, Jae Hyuck Jang
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Abstract
This disclosure relates to a stimulus-responsive dynamic meta-holographic device. According to an aspect of the disclosure, a stimulus-responsive dynamic meta-holographic device can be provided, which includes a metasurface in which a plurality of nanostructures are provided; wherein in the metasurface is provided a liquid crystal layer comprising a plurality of cells that may be altered in arrangements by outer stimulus, wherein the liquid crystal layer, is configured to alter the polarization state of the transmitted beam penetrating the liquid crystal layer as the arrangements of the cells are altered by outer stimulus.
Claims15
A hologram generating apparatus comprising:
- a processing unit configured to receive source data of a source image and use angular momentum of a first beam representing the source data to generate data for producing a generated image comprising the source data;
- and
- a database unit connected to a processing unit configured to store reference data for processing the generated data;
- and
- a beam-generating unit connected to the processing unit forming the generated image by projecting a second beam according to the processed generated data,
- wherein the processing unit comprising a Fourier processing unit configured to process value of Fourier Transform by multiplying a 2D Dirac comb function and a diffuser array with the source data.
A hologram generating method comprising:
- a step (a) in which source data of a source image is conveyed to a processing unit;
- a step (b) in which the processing unit processes generated data to generate a generated image comprising the source data using angular momentum of a first beam which represents the conveyed source data;
- and
- a step (c) in which a beam-generating unit projects a second beam according to the processed generated data and generates the generated image in a space,
- wherein the step (b), comprising:
- a step (b1) in which a Fourier processing unit multiplies a 2D Dirac comb function and diffuser array to the source data to process value of Fourier Transform;
- and
- a step (b2) in which an Inverse Fourier unit Inverse Fourier Transforms the value of Fourier Transform to process amplitude and phase.
Dependencies are inferred from the claim text.