Position indicating devices, systems and methods useable for signaling the positions of pedestrians or vehicles.

Position indicating devices, systems and methods useable for signaling the positions of pedestrians or vehicles.

A method of operating a display system consisting of a plurality of light emitting diodes (LEDs) is disclosed. The LEDs are arranged in a plurality of groups and an integrated circuit provides power to the LEDs through a plurality of output pins connected to respective groups. The integrated circuit selectively determines the states of the output pins to illuminate the groups of LEDs in a repeating sequence such that each group is illuminated for a time dependent on a number of groups and a compensation factor. The compensation factor is dependent on at least a number of LEDs in the group.

A method of operating a display system consisting of a plurality of light emitting diodes (LEDs) is disclosed. The LEDs are arranged in a plurality of groups and an integrated circuit provides power to the LEDs through a plurality of output pins connected to respective groups. The integrated circuit selectively determines the states of the output pins to illuminate the groups of LEDs in a repeating sequence such that each group is illuminated for a time dependent on a number of groups and a compensation factor. The compensation factor is dependent on at least a number of LEDs in the group.

A grow light includes a plurality of cool white LEDs, a plurality of warm white LEDs, and a driver electrically coupled to the cool white LEDs and the warm white LEDs. An intensity level and spectral composition of the radiant energy emitted by the grow light may be tuned or configured by varying a ratio of the quantity of cool white LEDs to the quantity of warm white LEDs, by varying a spatial arrangement among the cool white LEDs and the warm white LEDs, or by varying a level of current provided to some or all of the cool white LEDs and the warm white LEDs.

The present disclosure relates to an intelligent and healthy lighting method and device for an office space micro environment. According to the present disclosure, high-illuminance light can be provided, according to periodic variations of human rhythms and characteristics of office time (i.e., lighting time control data), in the morning to increase rhythmic stimulation to improve alertness of office staff and working efficiency. In addition, the present disclosure effectively solves the problem that conventional lamps cannot meet the requirements of human rhythm health by setting a lighting method having multiple modes (i.e., an awake mode, a rest mode, a relax mode, a work mode, a night mode, and a silence mode) and multiple scenes (i.e., determining a lighting mode according to ambient light data, lighting time control data, and human posture data).

The present disclosure relates to an intelligent and healthy lighting method and device for an office space micro environment. According to the present disclosure, high-illuminance light can be provided, according to periodic variations of human rhythms and characteristics of office time (i.e., lighting time control data), in the morning to increase rhythmic stimulation to improve alertness of office staff and working efficiency. In addition, the present disclosure effectively solves the problem that conventional lamps cannot meet the requirements of human rhythm health by setting a lighting method having multiple modes (i.e., an awake mode, a rest mode, a relax mode, a work mode, a night mode, and a silence mode) and multiple scenes (i.e., determining a lighting mode according to ambient light data, lighting time control data, and human posture data).

Systems and methods are disclosed herein for monitoring light emissions in electronic devices. The disclosed techniques herein provide for determining a display duration of display devices for a user. Light emission profiles for each of the display devices are determined. A cumulative emissions exposure is determined that is based on the light emission profiles for the display devices and the display duration of the display devices for the user. A determination is made whether the cumulative emissions exposure exceeds a light emission exposure limit set for the user. In a positive determination, an instruction is transmitted to the display devices for execution of a remedial action based on predefined rules.

Embodiments of the present disclosure include a method for destroying pathogens in irradiating a region at a radiation having a wavelength between 200-300 nm via one or more lamps operatively connected to a respective cavity in responsive to processing a sequence associated with an inputted address. Embodiments also include controlling an operating status of the one or more lamps via a control center by sending a first command and sending a second command. Embodiments also include determining: a time frame of when the one or more lamps irradiate the region; and determining if there may be a motion.

Embodiments of the present disclosure include a method for destroying pathogens in irradiating a region at a radiation having a wavelength between 200-300 nm via one or more lamps operatively connected to a respective cavity in responsive to processing a sequence associated with an inputted address. Embodiments also include controlling an operating status of the one or more lamps via a control center by sending a first command and sending a second command. Embodiments also include determining: a time frame of when the one or more lamps irradiate the region; and determining if there may be a motion.