An aircraft cabin lighting arrangement for illuminating a common space of an aircraft, includes a light output lens for passing light for illuminating said common space of the aircraft, a plurality of light sources having different light emission spectra, the plurality of light sources being arranged for light emission through the light output lens, and a detector for detecting a person's presence in the common space. The aircraft cabin lighting arrangement has at least a nominal day time mode of operation having a first light output, an intermediate mode of operation having a second light output, and a nominal night time mode of operation, and is configured to switch from the nominal night time mode of operation to the intermediate mode of operation as a response to the detector detecting a person's presence in the common space.

A lighting system that includes a lighting device and a dimming controller. The lighting device has a support structure that supports multiple lighting zones. Each lighting zone including one or more lighting sources. The dimming controller is in communication with multiple dimmers supported by the lighting device. Each of the lighting sources is coupled to a corresponding dimmer from the multiple dimmers. The dimming controller is configured to communicate a controlled setting for one or more of the lighting zones to the multiple dimmers.

According to an embodiment, there is provided a lighting apparatus including: a housing that has a first back cover having a parabolic shape and a recess opened below the first back cover; a first light emitting module that has a circuit board and a plurality of light emitting diodes arranged on the circuit board; a heat radiation body that is disposed in one region of the first back cover and has a first heat radiation portion in which the circuit board is disposed and a first reflection portion which extends from the first heat radiation portion along an contour line of an inner sphere surface of the first back cover; a transparent sheet that is disposed in in an oblique shape between a high point of the recess of the first back cover and the heat radiation body; a first reflection sheet that is disposed on the heat radiation body and reflects a first side light emitted from the plurality of light emitting diodes to the transparent sheet; and a second reflection sheet that is disposed on an inner surface of the first back cover and reflects a main light emitted from the plurality of light emitting diodes to the transparent sheet, in which the first reflection sheet includes a plurality of reflection surfaces.

Aspects are described for dual-distribution lighting devices. For example, a dual-distribution lighting device includes a forward-throw module with a first lighting element that can provide directional light, a wide-throw module with a second lighting element that can provide light with a wide distribution, an interface element that can to receive input, and a processing device. In response to the input being received via the interface element, the processing device deactivates one of the forward-throw and wide-throw modules and activates the other of the forward-throw and wide-throw modules, thereby causing the dual-distribution lighting device to switch between providing directional light and a wide distribution of light.

A lighting apparatus comprises: a body comprising a first body and a second body, wherein the first body comprises a first bottom surface and a first side surface, wherein the second body comprises a second bottom surface and a second side surface, and wherein the body has a receiving recess configured by the first bottom surface, the second bottom surface, the first side surface and the second side surface; a reflector disposed in the receiving recess of the body and comprising a plurality of reflective surfaces; and a light source disposed on the first side surface of the first body and the second side surface of the second body, disposed at an area corresponding to the reflective surfaces of the reflector.

A luminaire having a waveguide suspended beneath a mounting element, the waveguide has a first surface proximal to the mounting element, a second surface distal to the mounting element, and an edge between the first and the second surfaces. At least one cavity extends into the waveguide from the first surface to the second surface. A LED component is coupled to the waveguide so as to emit light into the cavity. LED support structures are also disclosed.

A light device includes one or more light arms. The light arms are rotatable and extendable. The light arms rotate based on a rotation hinge which connects the housing to the one or more light arms. The light arms extend by an extension hinge disposed between a first portion and a second portion of the light arms. The light arms may include a plurality of light elements which emit light for photography and videography purposes.

A lighting device with multiple light sources includes a housing, a first illuminating source, a second illuminating source, a lens assembly, a light reflecting and transmitting filter, a first power switch, a second power switch, and a power source. The first illuminating source and the second illuminating source are mounted within the housing and perpendicularly positioned of each other. The lens assembly is operatively coupled to the housing, wherein the lens assembly focus the first illuminating source and the second illuminating source between a spot position and a collimating potion. The light reflecting and transmitting filter is angularly mounted in between the first illuminating source and the second illuminating source, The first power switch and the second power switch are mounted onto the housing. The power source being electrically connected to the first illuminating source through the first power switch and the second illuminating source through the second power switch.

A light system comprises at least three separate individual rigid metal LED heat sinks each having a respective substantially planar outwardly facing LED support surface and a flexible printed circuit board. The flexible printed circuit board comprises a flexible substrate carrying a plurality of LEDs, electrical control components, electrical input components and electrical traces. LED regions of the flexible printed circuit board carrying the LEDs are disposed on the outwardly facing LED support surfaces with light-emitting surfaces of the LEDs outwardly facing. Adjacent LED heat sinks are foldably coupled to one another by joints formed by fold regions of the flexible printed circuit board extending between respective spaced-apart edges of the adjacent ones of the LED heat sinks. Each adjacent pair of the outwardly facing LED support surfaces are non-parallel to one another whereby the outwardly facing LED support surfaces are disposed on notional faces of a notional polyhedron.

The disclosure relates to a light source system. The light source system comprises: a light source adjustment device, comprising a light source mechanism, a collimating lens mechanism for collimating light beams emitted by the light source mechanism, and a position adjustment mechanism connected to the collimating lens mechanism and configured for adjusting a relative position between the collimating lens mechanism and the light source mechanism; and a focusing lens, which is arranged in a light emergent direction of the collimating lens mechanism and is configured for converging the light beams collimated by the collimating lens mechanism; wherein the light source mechanism is provided with at least one illuminant group, and the at least one illuminant group comprises at least two different illuminants. In the disclosure, at least two different illuminants are provided on a light source.