Abstract: The invention relates to a retractable lighting fixture, comprising an elongated drum rotatable over a length axis; and a flexible multilayer lighting sheet movable between a retracted position and a protracted position, with the multilayer lighting sheet in the retracted position being at least partially retracted in one or more windings around the drum and with the multilayer lighting sheet in the protracted position being fully unwound from the drum; the multilayer lighting sheet being composed of at least one LED layer and at least one diffusing optical layer, the at least one LED layer having a first LED layer edge mounted at a first mounting position of the drum and the at least one diffusing optical layer having a first optical layer edge mounted at a second mounting position of the drum, the first mounting position being located at an arc length from the second mounting position.

Abstract: A lighting device comprising at least three LED chains, each LED chain including a plurality of LED light sources separated from each other along the LED chain, wherein the LED light sources of each LED chain are electrically connected to a common drive signal line, wherein the light sources of the at least three LED chains are substantially evenly and non-symmetrically distributed over a light area, and a controller configured to apply a different drive signal to each drive signal line, wherein each drive signal is time varying so as to cause a time variation of at least one property of light emitted from the LED light sources. By applying different, and dynamically changing drive signals to the three groups, lighting effects resembling those occurring in nature can be accomplished, at a fraction of the costs of a pixelated and addressable device.

Abstract: The invention provides artificial skylights rendering a realistic view to the sky, by providing natural feeling patterns, dynamics and tonalities of vertical illumination, and shadow patterns. Thereto a light generating system is provided to generate dynamic and recognizable content, and in particular dapple, by providing a light generation device combining a first layer of randomly (uncon-trolled) operating, low intensity LEDS with a (nested) second layer of controlled higher intensity LEDs, thereby substantially reducing device and control costs. The ratio of randomly operating LEDs/controlled LEDs is about 3:1.

Abstract: A folded light engine comprising an array of LEDs mounted on a strip substrate, wherein the strip substrate comprises a central portion provided with a first set of through-holes, a first peripheral portion provided with an electrically conducting track connecting a first group of LEDs and a second set of through holes, and a second peripheral portion provided with an electrically conducting track connecting a second group of LEDs. The first peripheral portion is folded over the central portion, so that the LEDs thereon coincide with through-holes in the central portion, and the second peripheral portion is folded over the first peripheral portion, so that each LEDs thereon coincide with a combined through-hole formed by through-holes in the central portion and in the first peripheral portion. An elongated light engine can be cost efficiently manufactured in a relatively simple processes, including single-sided circuit patterning and LED mounting.

Abstract: The invention relates to a luminaire comprising a stack of parallel light transmissive transparent plates comprising a light guide plate and an optical plate. The light guide plate comprises a first and a second major light guide surface and a circumferential edge-wall and is edge-lit by LEDs. At least one of the major light guide surfaces is provided with a light outcoupling structure comprising outcoupling elements arranged at a first pitch P1. The optical plate comprises a first and a second major optical surface, the first major optical surface facing towards the second major light guide surface and only one of the first and second major optical surfaces being provided with an optical structure comprising optical elements arranged at a second pitch P2. The second major light guide surface and the first major optical surface are spaced apart in a direction perpendicular to the major light guide surface by a spacing S, with S being in the range of 0-12 mm.

Abstract: A lighting system comprises a lighting arrangement (153) and a controller for controlling the lighting arrangement. The lighting arrangement comprises an artificial skylight (161-163) and a functional general lighting device (166,168) for providing horizontal light. The functional general lighting device comprises a horizontal luminous surface. The functional general lighting device is positioned in parallel and adjacent to the artificial skylight. A spacing between the functional general lighting device and the artificial skylight does not exceed the width of the artificial skylight. The controller is configured to control the artificial skylight and the functional general lighting device to render different light effects of a dynamic light scene. The dynamic light scene specifies a temporal sequence of light effects for each of a plurality of lighting devices, including the artificial skylight and the functional general lighting device.

Abstract: A system is configured to receive light sensor data from a light sensor and determine a visibility threshold (235, 245) based on the light sensor data. The light sensor data is indicative of an ambient light level. The system is further configured to determine the plurality of light effects to be rendered by a lighting device and determine whether light intensity levels (233) of the plurality of light effects exceed the visibility threshold. The system is further configured to increase at least one of the light intensity levels above the visibility threshold, to harmonize the at least one light intensity level with the ambient light level, upon determining that the at least one light intensity level does not exceed the visibility threshold, and control the lighting device to render the plurality of light effects with the adjusted light intensity levels (253).

Abstract: A system is configured to determine light effects from a dynamic light scene (271, 272) which correspond to a first moment (275) in the dynamic light scene and control one or more lighting devices to render these light effects. The system is further configured to receive a user input signal, determine a second moment (276) in the dynamic light scene based on the user input signal, and determine a transition from the first moment to the second moment. This transition is faster than a normal transition from the first moment to the second moment, as specified in the dynamic light scene. The system is further configured to determine further light effects which correspond to the second moment in the dynamic light scene and control the one or more lighting devices to render these further light effects after the transition.

Abstract: The invention relates to a lighting system comprising a light area and a side wall around the light area defining a recess. The light area is located at a base of the recess and a light exit window is located downstream at a top of the recess opposite the light area. The side wall comprises a first wall portion and a second wall portion located upstream of the first wall portion. A clear, transparent pane is provided in between the first and second wall portion, wherein (essentially the whole of) the second wall portion is screened by the first wall portion from a direct line of view through the light exit window.

Abstract: A lighting module (10) is disclosed comprising a light mixing chamber (35) delimited by a back plate (40) opposed by a cover plate (20) and a sidewall arrangement (30) extending between the back plate (40) and the cover plate (20); and a light source (45) mounted on the back plate (40) and arranged to emit light into the light mixing chamber (35), wherein the cover plate (20) is transmissive for light emitted by the light source (45) and transmissive for sound waves, and wherein the back plate (40) comprises a plurality of through holes (41), each through hole (41) having a diameter in a range of 50 to 500 micrometers. Also disclosed are a lighting kit comprising a plurality of such lighting modules (10) and a lighting panel assembled from such a lighting kit.

Abstract: An electric current supply system (20) is designed to be at least partially submerged in an electrically conductive liquid during operation thereof, and having at least one electrically conductive component (21, 22, 23, 24) enveloped in liquid-tight material (40). The component (21, 22, 23, 24) has a sacrificial material that is capable of reacting electrochemically with the liquid. Further, the component (21, 22, 23, 24) has at least one gas trap portion (50) at which the sacrificial material occupies a space in the liquid-tight material (40) that is thereby defined with a gas trapping shape. If, in case of damage to the system (20) in an actual submerged state thereof, the component (21, 22, 23, 24) gets exposed to the liquid, it is achieved that an electrochemical reaction occurring at the exposed area of the component (21, 22, 23, 24) and an outflow of electric current to the liquid are stopped.

Abstract: A lighting unit (10) is disclosed comprising a torsion box (50) having a plurality of sidewalls (60) and a grid of internal walls (70), each of said internal walls extending between a pair of said sidewalls, said internal walls defining a plurality of compartments (80) within the lighting unit. At least one solid state lighting element (30) is located within at least some of said compartments, and a back panel (20) is arranged at a first opening (51) of the torsion box delimited by the sidewalls such that the back panel covers said compartments, wherein a second opening (53) of the torsion box delimited by said sidewalls opposing the first major opening defines a light exit window of the lighting unit. Also disclosed is a lighting kit comprising such lighting units, and wherein at least some internal walls (70) have a recessed central portion (72) having a height (H?) of at most half the height (H) of said side walls (70).

Abstract: Disclosed is a lighting module (10) comprising a carrier (20) having a major surface (21) including a plurality of first regions (23) and a plurality of second regions (25), each second region being adjacent to a first region. The lighting module also has a plurality of light engines (40), each light engine being located in a first region of said carrier, and an optically transmissive light exit structure (50) facing the major surface and being spatially separated therefrom. Each first region is covered by a separate cover (30) that is optically transmissive and acoustically reflective. Each cover has a surface portion with a surface normal (31) under a non-zero angle (?) with the surface normal (51) of the light exit structure so that it is shaped to reflect sound waves (33) towards an adjacent second region (25). Each second region has an acoustically absorbent member (35) arranged to absorb said reflected sound waves. Also disclosed is a lighting kit (100) comprising a plurality of such lighting modules.

Abstract: A lighting unit (10) is disclosed comprising a torsion box (50) having a plurality of sidewalls (60) and a grid of internal walls (70), each of said internal walls extending between a pair of said sidewalls, said internal walls defining a plurality of compartments (80) within the lighting unit. At least one solid state lighting element (30) is located within at least some of said compartments, and a back panel (20) is arranged at a first opening (51) of the torsion box delimited by the sidewalls such that the back panel covers said compartments, wherein a second opening (53) of the torsion box delimited by said sidewalls opposing the first major opening defines a light exit window of the lighting unit. Also disclosed is a lighting kit comprising such lighting units, and wherein at least some internal walls (70) have a recessed central portion (72) having a height (H?) of at most half the height (H) of said side walls (70).

Abstract: A lighting device is disclosed that comprises a glass tube (10); a solid state lighting assembly in said glass tube, said assembly comprising an electrically insulating optical film (20) comprising at least one arcuate portion lining a part (12) of the inner surface of the glass tube, wherein the glass tube further comprises a further part (14) defining a light exit portion; and a plurality of solid state lighting elements (32) on a carrier (30), said carrier contacting said optical film; a thermally conductive member (40, 42) in between at least a part of the solid state lighting assembly and the glass tube for thermally coupling the solid state lighting elements to the glass tube; and a transparent or translucent electrically insulating cover (50, 60) contacting the electrically insulating optical film and covering the solid state lighting elements. A luminaire including such a lighting device and a lighting device assembly method are also disclosed.

Abstract: The present invention relates to a marine structure comprising an external surface (50), a load (2, 20, 21, 22, 25) comprising a light source, said load having a first load terminal (2a) and a second load terminal (2b) adapted to be powered by an AC power source (1), said AC power source (1) having a first AC terminal (1a) electrically connectable to the surface (50) and a second AC terminal (1b), a first electrode (3) electrically connected to the first load terminal (2a), and a dielectric layer (4). The first electrode (3) and the dielectric layer (4) are arranged to form, in combination with the surface (50), a capacitor (6) for capacitive transmission of electrical power between the first electrode (3) and the surface (50). The second AC terminal (1b) and the second load terminal (2b) are arranged to be electrically connected to an external electrically conductive element (10, 11) insulated from the surface (50). The first load terminal (2a) is electrically insulated from the second load terminal (2b).

Abstract: A lighting module (10) is disclosed comprising a housing (15) and a woven fabric (50) defining a light exit window across said housing, the housing comprising an acoustically absorbent panel (20) opposing the woven fabric and a light engine arrangement (30) on the acoustically absorbent panel arranged to generate a light output through the light exit window, the lighting module further comprising a felt-based volumetric diffuser (40) in between the woven fabric and the light engine arrangement. Also disclosed are a N lighting kit and luminaire comprising such lighting modules (10).

Abstract: A lighting device including a glass tube; a solid state lighting assembly in said glass tube, said assembly having an electrically insulating optical film having at least one arcuate portion lining a part of the inner surface of the glass tube, wherein the glass tube further has a further part defining a light exit portion; and a plurality of solid state lighting elements on a carrier, said carrier contacting said optical film; a thermally conductive member in between at least a part of the solid state lighting assembly and the glass tube for thermally coupling the solid state lighting elements to the glass tube; and a transparent or translucent electrically insulating cover contacting the electrically insulating optical film and covering the solid state lighting elements. A luminaire including such a lighting device and a lighting device assembly method are also disclosed.

Abstract: A UV-C anti-fouling device that is coupled to power source using a single power supply wire. The device is AC powered, and is capacitively coupled to the conductive surface that is being protected, such as the hull of a ship. The device includes a plurality of UV-C LEDs that are either powered during half-cycles of the AC supply, or powered via individual rectifier circuits, such as a diode bridge, or Graetz bridge. A light guide optically extends the light from the UV-C LEDs. The arrangement is robust against shorts and opens, as well as external inflicted damage.

Abstract: The anti-fouling load arrangement uses the hull of a vessel as one plate of a capacitor to capacitively couple an electrode of the anti-fouling load arrangement to a power source within the hull. The other electrode of the anti-fouling load arrangement receives current from the power source via a wire, or via the conductivity of the sea water, which may be enhanced by the presence of a conductive plate on the surface of the water. A plurality of anti-fouling load arrangements may be applied to the hull as flexible tiles, or rigid tiles that conform to the shape of the hull.