Abstract:
A light ring assembly for a smart-home device may include a plurality of light-emitting diodes (LEDs) and a light guide, where the light guide may include a plurality of cutouts that receive the plurality of LEDs, and a plurality of transmissive sections between the plurality of cutouts where a thickness of the transmissive sections tapers as the transmissive sections extend away from the plurality of cutouts. The light ring assembly may also include an output surface that receives light emitted from the plurality of LEDs through the plurality of transmissive sections, where the output surface is substantially circular. The light guide may also include a plurality of micro-lenses in the plurality of transmissive sections where a relative density of the micro-lenses increases as the transmissive sections extend away from the plurality of cutouts.
Abstract:
In verschiedenen Ausführungsbeispielen wird eine Leuchtdiodenanordnung (10) bereitgestellt. Die Leuchtdiodenanordnung (10) weist auf: ein erstes Substrat; ein zweites Substrat, das auf dem ersten Substrat (12) angeordnet ist und das mindestens eine erste Leiterbahn (36) aufweist; einen ersten Leuchtdiodenstrang (40) (20), der mehrere erste Leuchtdioden (40) aufweist, die auf dem ersten Substrat (12) angeordnet sind und die elektrisch in Reihe geschaltet sind, wobei mindestens zwei der ersten Leuchtdioden (40) mittels der ersten Leiterbahn (36) des zweiten Substrats (16) elektrisch in Reihe geschaltet sind; und mindestens einen zweiten Leuchtdiodenstrang (22), der mehrere zweite Leuchtdioden (42) aufweist, die auf dem zweiten Substrat (16) angeordnet sind und die elektrisch in Reihe geschaltet sind.
Abstract:
Embodiments of claimed subject matter are directed to an illuminating surgical device comprising an array of illuminating elements and an array of louvers to direct light from the individual illuminating elements toward a surgical field.
Abstract:
Die vorliegende Erfindung betrifft ein Leuchtmittel (1) mit einem Hüllkolben (3), einem Sockel (4), einer ersten LED (21a) und einer zweiten LED (21b), die auf einer flächigen Leiterplatte (2) montiert sind, und zwar auf deren in Bezug auf eine Dickenrichtung einander entgegengesetzten Seiten (20), wobei zur Homogenisierung der mit dem Leuchtmittel (1) erzeugten Lichtverteilung eine erste Zerstreuungslinse (5a) auf der ersten Seite (20a) der Leiterplatte (2) der ersten LED (21a) zugeordnet montiert ist und eine zweite Zerstreuungslinse (5b) auf der zweiten Seite (20b) der Leiterplatte (2) der zweiten LED (21b) zugeordnet montiert ist und das von der jeweiligen LED (21) emittierte Licht der jeweiligen Zerstreuungslinse (5) nachgelagert eine im Vergleich zu der jeweiligen Zerstreuungslinse (5) vorgelagert aufgeweitete Lichtstärkeverteilung hat.
Abstract:
Apparatus and associated methods relate to a diversion driver module that dynamically adds a diversion current to an LED current so that the summed current maintains a predetermined minimum holding current requirement of a phase-controlled dimmer supply. In an illustrative example, the diversion current may be a function of input AC line voltage and/or firing angle of the phase-controlled dimmer supply. The phase controlled device may include, for example, a triac. The triac may supply adjustable pulse-width current to dim the LED according to a phase control signal. The diversion driver module may include one or more heat dissipating components disposed in thermal communication with the lamp base. Some driver modules may be sufficiently compact and energy efficient to provide smooth dim-to-black performance while operating within acceptable temperature limits for reliable operation while contained in the base of a standard form factor lamp, such as an E12 full-glass lamp.
Abstract:
An indirect linear luminaire (10) that produces a batwing photometric distribution. The luminaire (10) includes a rectangular housing (12) having a substantially rectangular chamber defined by two opposed bifold wings (20, 22) and a bi-concave door (40) extending therebetween. A linear light engine (60) emits light upwards towards the bi-concave door (40) and bifold wings (20, 22) and the light is reflected off of the bifold wings (20, 22) and bi-concave door (40) in a batwing distribution.
Abstract:
A light distribution device includes a light transmissive substrate having first and second opposing faces and a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the substrate. The light distribution device is configured to connect to a light assembly including a linear light source with the first face of the substrate facing the light source, with the linear prisms substantially parallel to a light source longitudinal axis and with and the substrate having a non-planar cross-sectional shape such that at least a major portion of the substrate is concave relative to the light source. When connected, the light distribution device is configured to receive light from the light source and distribute the light emerging from the second face of the substrate in a batwing distribution pattern in a plane perpendicular to the light source longitudinal axis.
Abstract:
The present invention relates to an end cap for a lamp tube of an illuminating device, comprising: a mounting ring fixedly mounted to one end of the lamp tube by means of an assembled end, and a cover plate for closing the mounting ring at a free end; and further comprising a rotating ring mounted between the mounting ring and the cover plate at the free end, the cover plate rotatably closes the mounting ring by means of the rotating ring. In addition, the present invention further relates to an illuminating device adopting an end cap of the above type.
Abstract:
Lighting systems, devices and techniques are provided to construct solid-state lighting devices and systems that provide energy-efficient illumination, including personal lighting devices, desktop lighting devices, and ceiling/overhead lighting devices based on semiconductor-based solid-state light sources such as LEDs or laser diodes. The disclosed solid-state lighting devices and systems use an illumination plate to receive the generated light from one or more LEDs or laser diodes and to process the received light to exhibit desired spatial distribution of light power across the illumination plate and desired direction of the output light from the illumination plate.