The present invention relates to a lighting device and a control method therefor. The lighting device according to the present invention comprises: a light source unit comprising one or more light emitting elements; a first body to which the light source unit is mounted; a second body; a sensor unit for sensing at least one of a relative posture and a relative position of the first body to the second body; and a control unit for controlling the light emitting operation of the light source unit on the basis of at least one of the relative posture and the relative position of the first body.

Various embodiments of the present invention provide a light emitting diode (LED) lighting fixture and methods of installing the same. In various embodiments, an LED lighting fixture may comprise: at least one socket comprising a socket opening; at least one LED positioned substantially within the socket opening; at least one shield member positioned adjacent the at least one socket such that the shield substantially encloses the socket opening; at least one decorative light shade; at least one cover comprising a neck portion having an internal surface, the internal surface defining a cover opening. The cover opening is configured to receive there-through at least a portion of a socket and substantially engage the socket. At least a portion of the cover is configured to substantially engage the decorative light shade. Also, at least a portion of the cover is configured to substantially enclose the LED and shield.

A UV light medium can be enhanced to provide specific optical properties that assist in distributing UV light from a UV source to achieve a defined UV light pattern and effective UV disinfection. The properties of the UV light medium can be selected and enhanced by loading the medium with additives, applying a UV blocking pattern, varying the UV light medium material type, thickness, shape, layering, or surface texture. The medium can be any material subject to UV light during a UV treatment or disinfection process. The UV light medium can create a generally uniform UV light pattern that reduces UV hot spots. The UV light medium can diffuse UV light at a target area to enables more robust disinfection with the same or lower UV source intensity.

An illumination system for a medical technology therapy and/or diagnosis system is provided. The system includes a light source, an optical waveguide, and an optical element in the form of a diffuser element. The optical waveguide has a first end that is connectable or assignable to the light source and the diffuser element is arranged at a second end of the optical waveguide so that light from the optical waveguide is injected into the optical element. The optical element has a lateral surface covered by a reflector layer at least in a section thereof. The reflector layer includes a mirror layer. The optical element has a light-reflecting area covered by the reflector layer and a light-transmissive area that is free of the reflector layer. Thus, light injected into the optical element is reflected on the light-reflecting area and emitted from the light-transmissive area.

A light emitting device is provided to a vehicle. The light emitting device includes a display portion and a light emitting portion. The display portion includes a first light source and a light guide plate that guides light from the first light source to form a first image in a space. The light emitting portion includes a second light source and a light emitting region that overlaps with the first image in a vehicle front-rear direction at a position close to the first image and emits light from the second light source to the outside of the vehicle.

A luminaire and LED light engine are provided. The luminaire includes the LED light engine and an optical device. The LED light engine includes an LED array and a partial diffuser. The partial diffuser diffuses light that is emitted by LEDs of a selected first subset of LEDs in the LED array and leaves undiffused light that is emitted by LEDs of a second subset of LEDs in the LED array. At least some LEDs are selected for inclusion in the first subset as emitting light that produces poorly blended colors in a light beam emitted by the LED array. The optical device is configured to receive a light beam emitted from the LED light engine and emit a modified light beam.

A lighting device (1) comprising a light generating element (2; 3), and a micro-lens (4) comprising a focal plane (F.sub.p), wherein the light generating element (2; 3) comprises a first light generating component (2) and a second light generating component (3), wherein the first light generating component (2) comprises a light emitting surface (28) adapted for providing a diffuse light output component, wherein the second light generating component (3) comprises at least one array of light sources (3) adapted for providing a directional light output component, wherein the light generating element (2; 3) is arranged to emit a light output towards the micro-lens array (4), the light output being formed by a superposition of the diffuse light output component and the directional light N output component, and wherein the array of the light sources (3) is located in the focal plane (F.sub.p) of the micro-lens array (4).

A generic reflector comprises a light inlet end, a light outlet end with at least one substantially rectangular light outlet opening, an optical axis, and a reflector surface which extends between the light inlet end and the light outlet end, where the reflector surface in a plane perpendicular to the optical axis defines a polygon. The reflector surface is formed such that the polygon between the light inlet end and the light outlet end at least in sections rotates about an axis of rotation which is oriented parallel to the optical axis. The invention also relates to an arrangement comprising at least two reflectors and a luminaire with a reflector and a light source, comprising an LED.

An optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a remote light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of luminescence materials provide a predetermined range of illumination wavelengths in the output. The remote light converting appliances may be provided as frustoconical elements within frustoconical reflective cavities with a void between the light converting appliances and the associated LEDs.

Disclosed is a fluorescent diffusion board for lighting including a first layer containing an inorganic material and a polycarbonate resin and a second layer formed on one surface of the first layer and configured to contain a polycarbonate resin and a fluorescent material.