A lighting device (1) is provided. The lighting device (1) comprises a cavity (10). The cavity (10) is extending along a longitudinal axis (L) of the lighting device (1). Further, the cavity (10) is defined by an interior surface (11) configured to reflect light impinging upon the interior surface (11) of the cavity (10). The cavity (10) has an opening (12) permitting light inside the cavity (10) to exit the cavity (10). The lighting device (1) further comprises an optical module (20). The optical module (20) is arranged in or at the opening (12) of the cavity (10), and is configured to transmit light impinging upon a surface (21) of the optical module (20) through the optical module (20). The light transmitted through the optical module (20) is emitted from the lighting device (1). The lighting device (1) further comprises a plurality of light emitting elements (31). The light emitting elements (31) are arranged in a succession along the longitudinal axis (L) of the lighting device (1) and arranged in the cavity (10), and are configured to emit first light (41). The first light (41) is impinging on the surface (21) of the optical module (20) without having first impinged on the interior surface (11) of the cavity (10). The light emitting elements (31) are further configured to emit second light (42). The second light (42) is impinging on the interior surface (11) of the cavity (10). The optical module (20) is configured to collimate the first light (41) in a transverse plane. The transverse plane is perpendicular to the longitudinal axis (L) of the lighting device (1). The optical module (20) is further configured to produce collimated light so as to increase the degree of collimation of light, in the transverse plane, transmitted from the optical module (20) as compared to the first light (41) prior to transmission through the optical module. At least one of the interior surface (11) of the cavity (10), the plurality of light-emitting elements (31) and the optical module (20) is or are configured such that the second light (42), reflected by the interior surface (11) of the cavity (10) and subsequently having impinged upon the surface (21) of the optical module (20) and transmitted from the optical module (20), is light for which at least 3% of the total luminous flux is in th

A light irradiation apparatus includes a plurality of light sources, a plurality of light transmission paths capable of selectively transmitting lights from the plurality of light sources, respectively, and an optical fiber path provided with a plurality of light incidence ends receiving respective lights from the plurality of light transmission paths, and a single light exit end. The optical fiber path has a plurality of optical fiber bundles. Incidence ends of the plurality of optical fiber bundles configures the plurality of light incidence ends, and exit ends of the plurality of optical fiber bundles configure the single light exit end by combining themselves. A lot of optical fibers constitute the plurality of optical fiber bundles. The optical fibers of the plurality of optical fiber bundles are dispersedly arranged with each other in uniform at the single light exit end.

A laser lighting device configured to provide two levels of image adjustment. An end piece provides first range of motion along the longitudinal axis of the laser, and controls image size projected from the laser. The end piece also allows for a number of masks to be utilized with the laser so that the projected light may be projected in various images shapes. A cap piece is rotatable about the longitudinal axis of the laser and may create various patterns in the light being projected, such as spots sparkles, and other patterns, or fill textures to the projected image of variable size.

Disclosed is a retractable lighting fixture having a retractable LED lighting layer. One or more optical layers (40, 240A/B, 340A/B, 440) may optionally be provided over the LED lighting layer (30, 230, 330, 430). The optical layer(s) and the LED lighting layer may optionally be movable relative to one another between at least being in an expanded spaced relation to one another and a compressed relation to one another. One or more LEDs (34, 134, 234A/B, 334A/B, 434) on the LED lighting layer may be individually controllable and such LEDs (34, 134, 234A/B, 334A/B, 434) may be selectively extinguished when they are in a retracted position.

The present invention relates to a lighting device for creating a light beam comprising a light source and an optical element positioned along an optical axis (80) between said light source and an outlet for said light beam wherein said optical element comprises an at least partially transparent or translucent effects wheel (1), said effects wheel (1) being movable between a first active position in which the effects wheel (1) is positioned along said optical axis (80) and a second inactive position, in which the effects wheel (1) is positioned outside said optical axis (80), and actuation means suitable for moving the effects wheel (1) in a back-and-forth movement between its first active position and its second inactive position.

The invention relates to a high-power LED lighting device which is portable and ultra-light, comprising: a light (2) comprising a carbon board (21) to the outer face of which at least one high-power LED (23) plate (22) is attached; a tripod (3) formed from carbon to which the light can be coupled; and a power supply source (4) that can be connected to the light (2) and is housed in a carbon box.

A portable indirect lighting apparatus includes first and second support structures. Each support structure includes a respective longitudinal light source having a linear array of light-emitting diodes (LEDs). A respective longitudinal lens is positioned proximate to each linear array of LEDs to receive and redirect the light emitted by the LEDs. A flexible reflector extends between the first and second support structure. The reflector has at least one diffusedly reflective surface. The reflector is configurable to an operational configuration with the diffusedly reflective surface positioned to receive the light redirected by the first and second longitudinal lenses. The reflector is configurable to a transportable configuration with at least a portion of the reflector wrapped around at least one of the first and second support structures.

A desktop USB-charger related product has space to receive an AC power-wire, USB-charger wire, or another charging related wire(s). The USB-charger related product is arranged to be installed on a desk top at a hand-reachable distance from a user by attachment so that there is no need for the user to bend body or knee in order to charge a device using the charger. The USB-charger related product has at least one USB-port that can supply a desired output-current in the range of from 1.0 A to 12 A and 3.5 VDC to 8.5 VDC by converting input AC power ranging from 110 VAC to 250 VAC. The USB-charger product may also optional to incorporate at least one additional device such as an AC outlet, sensor, motion sensor, remote control, time display, LEDs, other lights, a power fail device, a smell device, an audio device, a video device.

Generally, the present disclosure provides for a light duct sensor that can monitor an average light flux through light duct useful for architectural lighting. The present disclosure provides for a system that allows a minimally obtrusive sampling of the light in a duct. It samples a small fraction of a cross sectional area of a light duct that is distributed across potentially the entire cross sectional area, without creating a significant disturbance to the light.

A shutter system includes a substrate having a front surface with a length and a width, and a conductive layer on a portion of the front surface of the substrate; a dielectric layer disposed on the conductive layer; and an electrostatic shutter having a proximal end attached to the dielectric layer such that a portion of the shutter is in direct physical contact with the dielectric layer at a point at or adjacent the attached proximal end. The shutter is configured to transition between extended and retracted configurations. In the same or an alternative embodiment, the system includes a reinforcement configured such that when the shutter is in the extended configuration, an edge at a distal end of the shutter opposite the proximal end remains substantially parallel to the proximal end of the shutter as the shutter transitions from the extended configuration to the retracted configuration.