Title:
POWER RECEIVING DEVICE, POWER SUPPLY DEVICE, AND OPTICAL FIBER POWER SUPPLY SYSTEM
Document Type and Number:
Japanese Patent JP2021068963
Kind Code:
A
Abstract:
To provide a power receiving device, a power supply device, and an optical fiber power supply system that can reduce excess of electric power to be supplied.SOLUTION: A power receiving device (310C) comprises: a photoelectric conversion element (311) that converts power supply light input from the outside of the device into electric power; a light returning unit (312) that can output part of the power supply light (112) to the outside of the device as return light; a power monitoring unit (315) that monitors the relationship between the supply and demand of electric power for a load (401); and a return control unit (314) that controls the light returning unit (312). The return control unit (314) causes the light returning unit (312) to output return light (313) representing a binary or multivalued signal value based on a result of the monitoring performed by the power monitoring unit (315). A power supply device (110C) comprises: a laser oscillation unit (111); a light receiving element (114) that receives the return light (313) returned from the outside of the device; and a power control unit (115) that gradually switches the power of the power supply light (112) based on the return light (313).SELECTED DRAWING: Figure 5
Inventors:
KOBAYASHI TAKAHIRO
Application Number:
JP2019191738A
Publication Date:
April 30, 2021
Filing Date:
October 21, 2019
Export Citation:
Assignee:
KYOCERA CORP
International Classes:
H04B10/80; H02J50/30; H04B10/07
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune