Described herein are day lighting systems that utilize a combination of at least one natural light source with at least one multimode artificial light source. Also disclosed are methods for designing and operating such systems.

A system for modulating passive optical lighting or natural light for visible light communication (VLC) in a non-enclosed space to obtain precise location information or broadband data transmission. The system includes an optical modulator having a framing structure that is at least substantially transmissive with respect to visible light and that has a modulating layer attached thereon.

In various embodiments, a transom light arrangement may include a transom, which is arranged between a construction element and a transom light, a light source arrangement, which is mounted at least one of on or in the transom, with the light source arrangement or the transom defining a horizontal plane, and a screen structure. The light source arrangement and the screen structure are arranged relative to one another and are configured such that a spatial region above the horizontal plane is illuminated using the light source arrangement.

A daylighting device includes a photo-voltaic (PV) device that is mounted in or proximate to the daylighting device that provides sunlight to a service area. The PV device generates a power signal from incident sunlight. The power signal provides operational power to circuitry associated with the daylighting device, such as a transmitter that transmits a value representing the intensity of light on or near the daylighting device. This signal, which is generated either from the power signal or from a signal provided by a photosensor mounted in or proximate to the daylighting device, may be used by a control system to adjust light levels provided by artificial light sources to supplement the sunlight provided by the daylighting device to approach the desired light level in the service area.

A structure and method for utilizing natural light indoors or in the interior in a moving space are disclosed. The method includes: determining, by a controller, whether or not current indoor information is confirmable; determining, by the controller, whether or not the current indoor information coincides with a user request signal, upon determining that the current indoor information is confirmable; controlling, by the controller, radiation amounts of the natural light and artificial light, upon determining that the current indoor information does not coincide with the user request signal; and adjusting, by the controller, a position value of a smart lamp unit.

A light fixture includes a housing with a skylight aperture, and one or more louver blades spanning the skylight aperture. When open, the one or more movable louver blades block little of the light passing through the skylight aperture; in intermediate positions, the louver blades block a portion of the light; when closed, the louver blades block most light from passing through the skylight aperture. The light fixture also includes: a dimmable artificial light source configured to project artificial light toward the illuminated space; a light sensor that detects light illuminating the space; and a control unit that is integrated with the housing and communicates with the light sensor. The light sensor detects intensity and chromaticity information of the light illuminating the space. The control unit controls position of the louver blades and brightness and chromaticity of the dimmable artificial light source, in response to the light sensor.

The present invention relates to a flat wall-mounted sun-tracking and light-guiding device with built-in sensors, which comprises a sun-tracking and light-guiding member, a sun-tracking controller, a light concentrator, and a switchable light emitter. The sun-tracking and light-guiding member owns the function of tracking the sun and is coupled to the sun-tracking controller. The light concentrator faces the sun and is used for concentrating the sunlight. In addition, the light concentrator is connected with the sun-tracking and light-guiding member. The light concentrator includes a light-guiding optical fiber, which is used for guiding the concentrated sunlight. Besides, the switchable light emitter is connected with one end of the light-guiding optical fiber. The switchable light emitter can be disposed indoors or on plant chambers for lighting the interior or plants using the sunlight guided by the light-guiding optical fiber.

A luminaire includes a housing, a luminous zone coupled with the housing, and one or more transition zones coupled with the housing and disposed adjacent to the luminous zone. The luminous zone provides a first light to an illuminated area, and the one or more transition zones provide a second light to the illuminated area. The first light is harsher than the second light. A method of illuminating an area includes providing a first light to the area from a luminous zone of a luminaire and providing a second light to the area from one or more transition zones disposed adjacent to the luminous zone within the luminaire. The first light is a harsher light than the second light.

A system and method for collecting and distributing generated and/or solar radiation. A pulsed distribution subsystem combining a generated radiation source with a solar radiation collector is provided. Radiation from the pulsed distribution subsystem is provided to one or more discrete distribution systems; the discrete distributions systems transmit and distribute radiation, such as visible light, to one or more end use points in a facility.

Sunny Bright Solar Lighting is an easily mounted roof solar sunpipe that magnifies and concentrates the incoming sun light with an internally mounted and focused nonimaging Fresnel lens paired with a Kohler concentrator lens in order to magnify and concentrate the focused intense sun light onto a fiber optic illumination systems glass plate, used for solid core fiber optic lighting cables, and a bundle of seven 14 mm solid core endglow plastic fiber optic cables that carries only light waves in a visible light spectrum to seven different rooms that are up to thirty three feet away from the roof mounted sunny bright solar tube. Each fiber optic cable has an easily installed adjustable light aperture with diffuser on the end in order to dim or turn off each light independently this would allow sunny bright solar lighting to bring the suns light into any desired room during the day and at night the 110 v LED lighting array that is internally mounted in the sunny bright solar tube would replace the sunlight to continue lighting the seven different rooms.