US Patent No. 10,485,069

ILLUMINATING APPARATUS


Patent No. 10,485,069
Issue Date November 19, 2019
Title Illuminating Apparatus
Inventorship Keisuke Seki, Osaka (JP)
Shigeru Ido, Osaka (JP)
Kazuhiko Hayashi, Osaka (JP)
Assignee PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)

Claim of US Patent No. 10,485,069

1. An illuminating apparatus, comprising:a first light emitter;
a second light emitter which emits light including more red components than light emitted by the first light emitter; and
a lighting device including a control circuit that obtains a visible light communication signal that causes light emitted by the illuminating apparatus to blink at a rate that is unrecognizable to human eyes and a bright and dark pattern created by the blinking light is a data transmission signal, the control circuit controls a first current supplied to the first light emitter by modulating the first current according to the visible light communication signal, the control circuit controls a second current supplied to the second light emitter by modulating the second current according to the visible light communication signal in reverse phase relative to the first current,
the lighting device supplies, to the second light emitter, the second current modulated in reverse phase relative to the first current, while the first current is supplied to the first light emitter.