Title:
LIGHT-SENDING DEVICE AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/026462
Kind Code:
A1
Abstract:
In order to realize optical space communication using a multiplexed spatial light signal, this light-sending device is provided with: a light source; a spatial light modulator having a modulation part to which are set a plurality of modulation regions that are irradiated with light emitted from the light source, the spatial light modulator modulating the phase of irradiated light in each of the plurality of modulation regions that are set to the modulation part; a wavelength plate arranged in the optical path of modulated light that is modulated in each of the plurality of modulation regions set to the modulation part of the spatial light modulator, the wavelength plate converting the modulated light that is modulated in each of the plurality of modulation regions to mutually different polarized states; and a curved mirror having a curved reflection surface irradiated with the modulated light that is converted to the mutually different polarized states, the curved mirror reflecting the modulated light converted to the mutually different polarized states at a projection angle that corresponds to the curvature of the reflection surface.
Inventors:
TAKATA KOYA (JP)
MIZUMOTO HISASHI (JP)
OKUMURA FUJIO (JP)
MIZUMOTO HISASHI (JP)
OKUMURA FUJIO (JP)
Application Number:
PCT/JP2021/031475
Publication Date:
March 02, 2023
Filing Date:
August 27, 2021
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04B10/112
Domestic Patent References:
| WO2005004324A1 | 2005-01-13 | |||
| WO2018168598A1 | 2018-09-20 | |||
| WO2020188766A1 | 2020-09-24 |
Foreign References:
| JPH10163982A | 1998-06-19 |
Attorney, Agent or Firm:
KITAJIMA Hiroshi et al. (JP)
Download PDF: