A method of inactivating one or more pathogens in an environment. The method includes providing light from at least one lighting element of a lighting device installed in the environment, the at least one lighting element configured to provide light toward a target area in the environment, the provided light having at least a pathogen-inactivating first component in a first range of wavelengths of 400 nanometers to 420 nanometers. The pathogen-inactivating first component of light produces an irradiance of at least 0.01 mW/cm.sup.2 as measured at a surface in the target area that is unshielded from the lighting device and located at a distance of 1.5 meters from an external-most luminous surface of the lighting device. Providing the light causes the one or more pathogens to be inactivated.

A light emitting device includes first and second semiconductor laser elements, a base, a surrounding part, a wavelength converting member, and first and second wiring parts. The first laser element, the converting member and the second laser element are arranged in order in a first direction. At least one of the first and second laser elements is disposed between the first and second wiring parts in a second direction perpendicular to the first direction. An outermost periphery of the converting member is between a first imaginary line and a second imaginary line in the top view. The first and second imaginary lines are both parallel to the second direction. The first imaginary line passes through an outermost periphery in the first direction of the second laser element and the second imaginary line passes through an outermost periphery in a direction opposite to the first direction of the first laser element.

A method of providing doses of light sufficient to deactivate bacteria throughout a volumetric space. The method includes: (1) receiving data associated with a desired illuminance level for the space, indicative of an estimated occupancy of the volumetric space over a pre-determined period of time, and indicative of dimensions of the space; (2) determining, based on the received data, an arrangement of one or more lighting fixtures in the volumetric space, the one or more lighting fixtures configured to at least partially emit disinfecting light having a wavelength of between 400 nm and 420 nm, and a total radiometric power to be applied via the one or more lighting fixtures to produce a desired power density at any exposed surface within the volumetric space during the period of time; and (3) installing the determined arrangement of one or more lighting fixtures in the volumetric space.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

A cube for use in a restaurant allowing patrons to more easily notify their server they are in need of something. The cube is equipped with a lighting mechanism that adjusts colors that represent the status of the patrons dining. The cube contains a shell that has an upper surface and lower surface separated by an indent. The cube has a pair of switches that reside within a divot slightly larger in size that the switch. The charging station for the cube has a dock, a layer, and a power supply. The dock has a base equipped with a plurality of dock base towers, each having a plurality of dock tower connections. The dock base has a plurality of base supports each having a central plug. The layer also has layer connection towers each equipped with layer tower connections allowing the layer to function in tandem with the dock base.

Systems and methods to provide multiple channels of light to form a blended white light output, the systems and methods utilizing recipient luminophoric mediums to alter light provided by light emitting diodes. The predetermined blends of luminescent materials within the luminophoric mediums provide predetermined spectral power distributions in the white light output.

The present disclosure discloses a light distribution element and a lamp, the light distribution element is configured to distribute light for a light source, and the light distribution element includes at least two first light distribution modules arranged along a height direction of the light distribution element, the at least two first light distribution modules surround the light source in a circumferential direction, each of the at least two first light distribution modules includes a light incident surface and a light output surface that are away from each other, and the light incident surface is arranged opposite to the light source, each of the at least two first light distribution modules has a divergent light configuration from the light incident surface to the light output surface; and a depression region is between two adjacent first light distribution modules.

The invention provides a light management information system for an outdoor lighting network system, having a plurality of outdoor light units each including at least one sensor type, where each of the light units communicates with at least one other light unit, at least one user input/output device in communication with at one or more of said outdoor light units, a central management system in communication with light units, said central management system sends control commands and/or information to one or more of said outdoor light units, in response to received outdoor light unit status/sensor information from one or more of said outdoor light units or received user information requests from said user input/output device, a resource server in communication with said central management system, wherein the central management system uses the light unit status/sensor information and resources from the resource server to provide information to the user input/output device and/or reconfigure one or more of the lights units.

An illumination device (e.g., an electric candle, etc.) generally includes a shell, a housing coupled to the shell, a flame-shaped head disposed at least partially outside of the shell, and a pendulum supporting the flame-shaped head. The pendulum is pivotally coupled to the housing and configured to move the flame-shaped head relative to the housing. The illumination device also includes a first light source configured to illuminate the flame-shaped head, a second light source arranged inside the shell and configured to illuminate the shell, and a printed circuit board assembly operable to control the first light source to illuminate the flame-shaped head and the second light source to illuminate the shell.

Disclosed herein is a multi-element flexible strap light which includes a plurality of light elements disposed on a flexible chassis. The flexible chassis may include a first flexible layer, a printed circuit board, and a second flexible layer. The flexible chassis may be further contained within a third flexible layer, such as a layer of polycarbonate plastic. Further disclosed is a multi-element flexible strap light system which includes a plurality of light elements disposed on a flexible chassis and a remote battery.