Abstract: A detection and communication module arranged to implement a face detection function and an optical wireless communication function, and including a processing unit, a transmission chain and a reception chain, the processing unit being arranged to transmit via the transmission chain a detection signal, to receive via the reception chain the detection signal following its reflection on a face surface of an individual, and to evaluate a distance between the detection and communication module and the face surface of the individual, the processing unit being further arranged to transmit via the transmission chain a transmitted optical wireless communication signal containing data to be transmitted, and to receive via the reception chain a received optical wireless communication signal.

Abstract: A lighting and communication system includes a first optical fiber portion, a second optical fiber portion, a third optical fiber portion, a fourth optical fiber portion and a fifth optical fiber portion that are distinct, wherein a visible light transmitter is positioned at a first end of the first optical fiber portion, a modulated light signal transmitter is positioned at a first end of the second optical fiber portion, a second end of the first optical fiber portion and a second end of the second optical fiber portion are connected to a first end of the third optical fiber portion, a modulated light signal receiver is positioned at a first end of the fourth optical fiber portion, a second end of the third optical fiber portion and a second end of the fourth optical fiber portion are connected to a first end of the fifth optical fiber portion.

Abstract: An optical wireless communication device includes a processing component which is configured to produce transmitted digital signals during transmission periods; a light source which is configured to produce transmitted light signals from transmitted analog signals; a shutdown circuit which is configured to selectively activate or deactivate the light source; the processing component including a binary output to which it applies a binary control signal which is in a first state during the transmission periods and in a second state outside the transmission periods, the shutdown circuit being configured to activate the light source when the binary control signal is in the first state and to deactivate the light source when the binary control signal is in the second state.

Abstract: A system includes an optical fiber assembly, a receiver and a telescope, the receiver being positioned at a receiving end of the optical fiber assembly, the telescope being positioned at a collecting end, the receiver being arranged to receive uplink modulated light signals collected by the telescope and travelling through the optical fiber assembly, the telescope comprising an optical concentrator having an inlet face and an outlet face with a surface area smaller than that of the inlet face, the telescope further including a gradient-index lens dispose d coaxially with respect to the optical concentrator so that an inlet face of the gradient-index lens extends opposite the outlet face of the optical concentrator, the collecting end of the optical fiber assembly opening out opposite an outlet face of the gradient-index lens.

Abstract: A method for identifying a device capable of communicating by Li-Fi including the steps of generating and storing a list of first pieces of address data and a list of transmission frequencies each associated with a first piece of address data; selecting second pieces of address data (11) to form a MAC address (10); transforming each second piece of address data into a third piece of address data containing a transmission frequency value associated with the second piece of address data; generating a global address; assigning the global address to the device; and recording the global address in a memory module of the device capable of communicating by Li-Fi.

Abstract: A method for identifying a device capable of communicating by Li-Fi including the steps of generating and storing a list of first pieces of address data and a list of transmission frequencies each associated with a first piece of address data; selecting second pieces of address data (11) to form a MAC address (10); transforming each second piece of address data into a third piece of address data containing a transmission frequency value associated with the second piece of address data; generating a global address; assigning the global address to the device; and recording the global address in a memory module of the device capable of communicating by Li-Fi.

Abstract: An electronic device capable of communicating by Li-Fi and comprising:—at least one light emitting diode (4) intended to emit Li-Fi signals;—energy recovery means (10) intended to recover thermal energy produced by the light emitting diode and to generate, from the recovered thermal energy, a first electrical energy supply of the electronic device.