Embodiments relate to a bidirectional free space optical (FSO) communications system. Specifically, data-encoded FSO beams are transmitted and received between two terminals. A transmit (Tx) direction of a beam transmitted from the first terminal is dithered by a beam steering unit (BSU). As the dithered beam is received by the second terminal, the power levels of the beam are measured. The power levels are then encoded in a data-encoded FSO beam transmitted to the first terminal. This allows the first terminal to decode the received FSO beam and determine the power levels. The power levels allow the first terminal to determine Tx direction misalignments and adjust the Tx direction for the Tx beam sent to the second terminal. This process may be repeated to reduce Tx misalignments and may be performed by both terminals such that each terminal sends power level information to the opposite terminal.

A drone network including a first drone including a first receiver, a first transmitter, and a first processor, and a second drone positionable at a distance from the first drone. The second drone includes a second receiver, a second transmitter, and a second processor. The first transmitter is configured to emit a signal towards the second drone for reception at the second receiver, and the second processor is configured to determine a minimum signal power for the signal to be processed at the second drone. The second transmitter is configured to emit a return signal towards the first drone for reception at the first receiver. The return signal contains minimum signal power data as determined by the second processor, and the first processor is configured to modulate the power of signals to be emitted towards the second drone from the first transmitter based on the minimum signal power data.

A device includes a display stack and an optical receiver. The display stack includes a set of opaque elements defining a translucent aperture. The translucent aperture extends through the display stack. The optical receiver is spaced apart from and behind a back surface of the display stack. At least one micro-optic element is formed on the back surface of the display stack, between the display stack and the optical receiver. The at least one micro-optic element includes a micro-optic element having a focal point located within the translucent aperture. The optical receiver is configured to receive light through the translucent aperture and the at least one micro-optic element.

An immersive experience system is provided. The immersive experience system has a processor that determines a position of a first head-mounted display. Further, the processor determines a position of a second head-mounted display. The processor also generates a first image for a first immersive experience corresponding to the position of the first head-mounted display. Moreover, the process encodes the first image into a first infrared spectrum illumination having a first wavelength. In addition, the processor generates a second image for a second immersive experience corresponding to the position of the second head-mounted display. Finally, the processor encodes the second image into a second infrared spectrum illumination having a second wavelength. The first wavelength is distinct from the second wavelength.

Embodiments relate to a free space optical (FSO) communications system with a feed-forward control path. A data-encoded FSO beam is transmitted from a local terminal to a remote terminal. The local terminal directs a propagation direction of the FSO beam by a beam steering unit. To reduce pointing errors between the terminals, the FSO communications system includes a feed-forward control path. The control path includes an inertial measurement unit (IMU) that outputs motion data indicative of motion of the local terminal, for example if the local terminal is mounted to a tower that sways. The control path also includes a controller that receives the motion data from the IMU and generates feed-forward control signals for the beam steering unit. The control signals compensate for an effect of the motion of the local terminal on the propagation direction of the FSO beam.

Embodiments relate to a bidirectional free space optical (FSO) communications system. Specifically, data-encoded FSO beams are transmitted and received between two terminals. A transmit (Tx) direction of a beam transmitted from the first terminal is dithered by a beam steering unit (BSU). As the dithered beam is received by the second terminal, the power levels of the beam are measured. The power levels are then encoded in a data-encoded FSO beam transmitted to the first terminal. This allows the first terminal to decode the received FSO beam and determine the power levels. The power levels allow the first terminal to determine Tx direction misalignments and adjust the Tx direction for the Tx beam sent to the second terminal. This process may be repeated to reduce Tx misalignments and may be performed by both terminals such that each terminal sends power level information to the opposite terminal.

Methods, systems, and computer readable media can be operable to facilitate recognizing and providing notification of events, states, and/or conditions associated with the CPE device and/or associated networks or devices. An application running on a mobile device (e.g., smart phone) can be used to observe and diagnose electronic equipment (e.g., CPE device). Equipment can have indicators (audio, visual, etc.) that a human would have difficulty interpreting correctly. A mobile device application can be programmed to observe audio and/or visual indicators, report status and possibly recommend course(s) of corrective action to the user. Since the information observed by the mobile device is unidirectional (from the equipment to the mobile device) there is no increased security risk.

An image display device configured to obtain device identification information corresponding to a peripheral device connected to the image display device and control a wireless communicator to transmit search data corresponding to the peripheral device to a control device of the image display device based on the device identification information, and to determine pairing data and control code information corresponding to the peripheral device, based on the device identification information, upon receiving response data from the control device, and transmit the pairing data and the control code information to the control device through the wireless communicator.

A wavelength tunable bidirectional optical wireless communication system based on self-injection lock includes one optical node and multiple optical terminals, wherein the optical node consists of a tunable filter and a self-injection lock system to replace the conventional optical amplifier while achieving an amplified optical power, increasing the modulation bandwidth, wavelength adjustment and reducing the linewidth of each wavelength, in a low noise criteria. The optical terminal is composed by a modulated retroreflector to achieve the purpose of lightweight and low power consumption.

An optical wireless communication system comprises a signal providing apparatus configured to provide a data signal, a driver apparatus separate from the signal providing apparatus and coupled to the signal providing apparatus by a signal cable, wherein the driver apparatus is configured to receive the data signal via the signal cable and to process the data signal to produce a driving signal, and a luminaire comprising a modulateable light source, wherein the modulateable light source is configured to be driven by the driving signal, thereby to produce modulated light, wherein the driver apparatus is positioned adjacent to or within the luminaire.