According to an embodiment of the present technology, there is provided a bulb-type light source apparatus including a light source unit, a translucent cover, and a base unit. The translucent cover includes a first area including a convex lens function and a second area including a concave lens function. The base unit supports the light source unit and the translucent cover such that the second area is positioned closer to the light source unit than the first area.

The present invention has as its object the provision of a fluorescence light source device that can obtain high luminous efficiency. A fluorescence light source device of the present invention includes a wavelength conversion member that emits fluorescence by excitation laser light. The wavelength conversion member has an excitation laser light receiving surface including a periodic structure having a periodic array of conical or truncated projections with an aspect ratio, which is a ratio of the height of the projection to the pitch in the periodic structure, of not lower than 0.2. The wavelength conversion member is formed from a phosphor composed of a polycrystal and contains a micro-scatterer with a refractive index of not lower than 1.0 for scattering the excitation laser light and fluorescence emitted from the phosphor. A ratio (T/R) between a light transmission percentage T [%] in the wavelength conversion member and a light reflection percentage R [%] in the wavelength conversion member is 1 to 20.

The present invention relates to the field of LED illumination, particularly to a high power LED illuminant based on heat pipe principle. The high power LED illuminant comprises a light emitting section, a liquid storing section with liquid electric-insulation-operating-medium stored therein and a heat sink. The liquid electric-insulation-operating-medium is drawn into the light emitting section by means of capillary force and then immerses the LED chips and thus directly cools down the LED chips. The electric-insulation-operating-medium takes in heat and turns into gas and then flows into the liquid storing section through capillary channels. The heat sink is used to cool down the electric-insulation-operating-medium so that it turns into liquid. When the LED chips generate heat during its operation, the electric-insulation-operating-medium flows into the heat sink after turning into gas by absorbing heat. The electric-insulation-operating-medium turns into liquid after giving out heat through the heat sink. By means of such a cycle, the heat generated by LED chips is so transferred away via the electric-insulation-operating-medium that the temperature of the LED chips is kept within the temperature range of gaseous electric-insulation-operating-medium. In this way, the lifespan of the LED chips is extended consequently and the luminous efficiency is enhanced as well.

A lighting device may be provided that includes: a heat sink which includes a top surface and a member which has a side and is disposed on the top surface; a light source which includes a substrate disposed on the side of the member and light emitting devices disposed on the substrate, and has a reference point; and a cover which is coupled to the heat sink and includes an upper portion and a lower portion, which are divided by an imaginary plane passing through the reference point and being parallel with the top surface of the heat sink, wherein a distance from the reference point of the light source to the upper portion of the cover is larger than a distance from the reference point of the light source to the lower portion of the cover.

An illuminating device may include a light source, an optical unit configured to adjust direction of light from the light source, a reflector, a light pipe, and an exciter. The light pipe may receive light having a first wavelength from the optical unit and direct the light having the first wavelength onto the exciter. The exciter may convert the light having the first wavelength into light having the second wavelength and reflects the light having the second wavelength to the reflector. A circumferential wall of the light pipe is configured to reflect the light having the first wavelength and to transmit the light having the second wavelength.

An aircraft landing light unit includes a plurality of LEDs, an optical system associated with the plurality of LEDs for shaping a light output of the aircraft landing light unit for illuminating an aircraft environment, a control unit for controlling the plurality of LEDs, and a photo detector arranged for detecting light, emitted by the plurality of LEDs, output via the optical system and reflected by atmospheric haze, such as clouds, fog, rain and snow, wherein the control unit is coupled to the photo detector and is configured to control the plurality of LEDs on the basis of the light detected by the photo detector, thereby adjusting the light output of the aircraft landing light unit to the atmospheric haze.

A method for producing a luminaire housing on an additive manufacturing system includes selecting a luminaire housing base shape from which a data file of a first convex polyhedral model is built, rescaling the first convex polyhedral model into a larger convex polyhedral model, filling the larger convex polyhedral model with multiple versions of the first convex polyhedral model, separating larger convex polyhedral shape model into structural unit shape, and providing the data file containing the structural unit shapes to the additive manufacturing system. In some implementations an interior volume of the larger convex polyhedral shape model can be cleared of portions of first convex polyhedral model. The method includes the additive manufacturing system producing one or more structural units based on the structural unit shapes described in the electronic data file. A non-transitory computer readable medium, and a luminaire housing including a light source are described.

Materials and optical components formed thereof that are suitable for use in lighting units to obtain or approximate white light illumination, including lighting units that utilize one or more light-emitting diodes (LEDs) as a light source.

A luminaire includes a housing defining an interior volume. The luminaire also includes a lamp within the interior volume and configured to emit light. Additionally, the luminaire includes a wireless antenna positioned within the interior volume, configured to transmit or receive a wireless signal along a first direction, and configured to be operatively coupled to an access point. The wireless antenna can be entirely within the interior volume. The luminaire can include a first reflective surface within the interior volume and configured to redirect the wireless signal. The lamp can be configured to be electrically coupled to a power inserter that powers the access point.

A closure for a lighting fixture includes a cover having interior and exterior surfaces that defines at least a part of an enclosure of the lighting fixture. In certain aspects, the cover comprises mounts for mounting circuitry to the interior surface of the cover and at least one attachment feature for affixing the cover to a cabinet of the lighting fixture. A light source and driver circuitry are also affixed to the cover. Because the driver circuitry and the light source are both mounted to the same cover of the lighting fixture, the light source may be replaced with an alternate light source having different voltage and current specifications, for example, by replacement of the cover with another cover. In this manner, light sources having different operating characteristics and specifications may be replaced or interchanged with relative ease.