Abstract: A lens for a light emitting diode is formed with a material having a refractive index of n, and the lens includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip therein. In the lens, a distance from a center of the base to a point of the curved center-edge surface is always shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base.

Abstract: The claimed subject matter provides systems and/or methods that employ a control component integrated in a light bulb to control the light bulb wirelessly. The wireless light bulb can include a light source, a control component that manages operation of the light source, an input component that wirelessly obtains input signals that can be utilized by the control component, and a power source. For instance, the light source can be one or more light emitting diodes (LEDs) and/or the power source can be one or more batteries. Moreover, the input component can receive the input signals (e.g., radio frequency, infrared, . . . ) from a remote control, a sensor, a differing wireless light bulb, a radio frequency identifier (RFID) tag, etc. Further, the wireless light bulb can be mechanically coupled to a lighting fixture, where the lighting fixture may or may not be electrically coupled to an alternating current (AC) power source.

Abstract: An LED night-light generally includes a standard night-light assembly for an incandescent light bulb retrofit with an LED. A housing has an interior surface defining a cylindrical opening. The interior surface has threads adapted to mate with a threaded end of the incandescent light bulb. First and second prongs extend out of the housing and are configured for insertion into an electrical outlet. A groove is in the interior surface of the housing. A disk is received in the groove and mounts the LED to the housing so that the standard night-light assembly is retrofit as an LED night-light.

Abstract: Methods and systems consistent with some embodiments presented provide methods for denying visual access to a first area from a target area. In some embodiments, methods for denying visual access from a target area may include generating a structured light pattern and projecting the structured light pattern from onto the target area. The structured light pattern may be moved at a rate and in a pattern to deny visual access of a first area from the target area. In some embodiments, the rate and the pattern may be chosen based on characteristics of the target area.

Abstract: An illumination device comprising a housing positionable at a distance from an area to be illuminated and having at least one lighting module, on a support in the housing, that has lighting units having the same light distribution characteristics. Each of the lighting units contains lighting elements and associated lenses arranged in front of the same in the light-emitting direction. Different lighting modules may include lighting units having different light distribution characteristics, while the lighting units have optical axes running parallel to each other. At least one lighting unit is configured such that its light distribution characteristics have at least one asymmetrical section relative to a central plane of the lighting unit.

Abstract: A multicolor illumination device uses a blue or UV light source to excite wavelength conversion materials and a red light source as a direct illumination light. The lights from the two light sources are combined onto a moving wavelength conversion element. The moving wavelength conversion element includes multiple segments alternatingly disposed in the paths of the incident lights, including a first segment with no wavelength conversion material, and other segments which may carry blue, green and/or yellow wavelength conversion materials. A control system controls the on/off of the two light sources so that when the first segment is in the light path, the red light source is on and the blue/UV light source is off, and vice versa when the other segments are in the light path. Alternatively, dichroic filters may be fixedly provided on the segments of the wavelength conversion element to block the blue/UV or red light.

Abstract: A backlight unit for a liquid crystal display which can achieve substantially uniform luminance over the entire display screen includes: a light-guide plate guiding incident light and having a diffusion pattern for emitting light upward, the diffusion pattern being formed on at least one of upper and lower surfaces of the light-guide plate; and a point light source assembly disposed on at least one side portion of the light-guide plate, the point light source assembly including a plurality of point-light-source elements and a support substrate, in which the point-light-source elements are disposed on the support substrate and supply the light to the light-guide plate. An edge portion of one surface of the light-guide plate, which is adjacent to the point light source assembly, includes a first region corresponding to the point-light-source elements and a second region corresponding to a position between the point-light-source elements.

Abstract: A lighting apparatus and method for making the same are presented. In some aspects the apparatus includes a plurality of LED light sources mounted to a metal circuit board in a housing of the apparatus. In other aspects a light-permissive potting compound is disposed in the space between the LEDs and circuit board and the housing of said apparatus so as to permit exit of light from said LEDs while providing mechanical protection for the circuit board and LEDs and removing heat generated from said LEDs.

Abstract: A lighting device is provided. The lighting device includes: a light source module mounted on a substrate; a lens unit provided on the light source module and including an accommodating groove accommodating the light source module; a housing unit accommodating the lens unit therein to protect the lens unit from an outside; a supporting unit fixed to the substrate and including a coupling hole having the housing unit coupled thereto to thereby support the housing unit; and a height adjustment unit allowing the housing unit to be vertically-movably coupled to the supporting unit and adjusting a height of the lens unit such that the height of the lens unit is varied.

Abstract: Collimating light engines, methods of making collimating light engines, and articles incorporating collimating light engines are disclosed. In one aspect, a light source and circuitry can be disposed between a reflector and a reflective baffle to form a collimating light engine. The light source is at least partially obscured from view by the reflective baffle. Light emitted from the light source is partially collimated upon leaving the light engine.

Abstract: Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system includes a plurality of synthetic jets. The synthetic jets are arranged within the lighting system such that they are secured at contact points.

Abstract: A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Abstract: An LED ceiling lamp includes a primary illumination unit and at least one subsidiary illumination unit. The primary illumination includes a base and a connecting member to fix the base to a ceiling. Each of the at least one subsidiary illumination unit is fixed to the base and faces the ceiling. Each of the at least one subsidiary illumination unit comprises a circuit board with an LED unit, a lens and a reflector. The lens covers the circuit board. The circuit board and the lens are received in the reflector. The lens is configured for dividing the light beams from the LED units into several light groups. An aphotic area is formed between each two adjacent light groups. The reflector is configured for reflecting the several light groups on the ceiling.

Abstract: A flashlight has a casing extending along an axis and having axially opposite front and rear ends, a collar fittable on the front end, a support disk engaged and gripped axially between the collar and the front end, a light source on a front face of the disk, thermally conductive regions on the disk, and a lamp head secured to the collar.

Abstract: In one embodiment, a solid-state luminaire has a strip of high power LEDs, where each LED emits light into an optical coupler. Light from the optical coupler is then coupled into a light guide. Light coupled into the light guide is mixed and guided to an exit aperture of the light guide. An optical extractor proximate the exit aperture of the light guide redirects light outward, which is optionally redirected generally downward by a secondary reflector that extends outwardly along the length of the light guide. The secondary reflector may be configured to create a variety of light-emission patterns. The luminaire may be hung from a ceiling, in track lighting, used as a pendant or pedestal fixture, or in other applications.

Abstract: Disclosed is an exemplary illumination device for enhancing the brightness and chromaticity of an illuminator employing light emitting diodes (LED). The illumination device may include a first light source configured to emit light at a first wavelength range. A first dichroic optical element associated with the first light source may be configured to optically block less than the entire wavelength range of the light emitted from the first light source. The illumination device may also include a second light source configured to emit light at second wavelength range substantially corresponding to the wavelength range optically blocked by the first dichroic optical element.

Abstract: A decorative light string including a first group of light elements electrically connected in parallel to each other, a second plurality of light elements electrically connected in parallel to each other, and a third plurality of light elements electrically connected in parallel to each other. The first, second, and third groups of lights are electrically connected in series. A first wire stabilizer is located between the first group of lights and the second group of lights, and a second wire stabilizer is located between the second group of lights and the third group of lights. The first and second wire stabilizers secure wire ends forming first and second gaps in the wiring of the light string.

Abstract: A lens for a light emitting diode is formed with a material having a refractive index of n, and the lens includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip therein. In the lens, a distance from a center of the base to a point of the curved center-edge surface is always shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base.

Abstract: A device and method for providing illumination from a shelf or mantel shelf is provided. A housing recess within the shelf includes a base, front, side, and rear walls extending perpendicular from and along the perimeter of the base. A top panel covers the recess, is coplanar with the top surface of the shelf and permits the dispersion of light through the top side. A multiplicity of lights are positioned within the recess along the perimeter of the base to provide even dispersal of the light from the shelf.

Abstract: An exterior mirror is proposed, which is configured with an LED as a signal light in the simplest manner. A contact body at the LED facilitates simple assembly and simple contacting of the LED.