Light modulating device and operating method thereof using voltage-varied lc
AssigneePostech Research and Business Development Foundation
InventorsJunsuk RHO, Inki KIM, Jaehyuck JANG, Gyeongtae KIM
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Abstract
An apparatus for creating a holographic image, comprising: a first polarizing plate; a metasurface configured to create a first holographic image by modulating a polarization state of a light beam passing through the first polarizing plate; a controller configured to supply voltage to a voltage-varied liquid crystal (LC); and the voltage-varied LC configured to create a second holographic image by modulating a polarization state of the first holographic image according to the voltage and operating method thereof are provided.
Claims31
An apparatus for creating a holographic image, the apparatus comprising:
- a first polarizing plate;
- a metasurface configured to create a first holographic image by modulating a polarization state of a light beam passing through the first polarizing plate;
- a controller configured to supply voltage to a voltage-varied liquid crystal (LC);
- and
- the voltage-varied LC configured to create a second holographic image by modulating a polarization state of the first holographic image according to the voltage.
A light modulating device, comprising:
- a substrate configured to support a plurality of meta-atoms;
- a metasurface layer disposed on the substrate configured to include the plurality of meta-atoms;
- and
- a voltage-varied liquid crystal (LC) configured to modulate a polarization state of a holographic image generated by light beams passing through the plurality of meta-atoms.
A method for accessing a server using an light modulation device, the method comprising:
- receiving a first random number key from the server after requesting access to the server;
- determining a voltage value corresponding to the first random number key based on a key-voltage conversion relation;
- obtaining a second random number key by supplying the voltage value to the light modulating device;
- and
- access the server using the second random key.
Dependencies are inferred from the claim text.