An LED filament, comprising: an enclosure; a linear array of LED devices; and an electrical connector, wherein: the enclosure includes an optically transmissive binder; and the linear of LED devices is conformally wrapped around by the enclosure to be operable to emit light when energized through the electrical connector.

The attachment generally takes on the form of a removable decal that one places over the fixture, such as an outlet. The attachment may glow in the dark, by use of common glow-in-the-dark materials such as glow-in-the-dark paint or phosphorescent paper. This enables the fixture to be easily located in the dark for turning on a light switch or plugging in a plug into an outlet. The attachment can also be illuminated through electrical means, such as by using electroluminescent paper. In other embodiments, the attachment is not illuminated and contain a design to make the fixture more noticeable, aesthetically pleasing, and easier to access.

A lighting system comprises at least one excitation source (5), preferably an LED, operable to generate and radiate excitation radiation of a first wavelength (λ.sub.1); a shade (4) configured to at least in part surround the at least one source (5) and remotely located thereto; and at least one phosphor (16) provided in or on at least a part of the shade (4), wherein the phosphor (16) emits radiation of a different wavelength in response to incident excitation radiation. The phosphor can be provided on a part of an outer or inner surface of the shade. Alternatively, or in addition, the phosphor is incorporated within the shade. The lighting system finds particular application as a hanging, a desk, a floor standing, a wall mountable, a spot, an outdoor or an accent lighting fixture.

An optical converter for producing colored or white light from blue excitation light is provided. The converter has good scattering properties to be able to produce nearly white light from the scattered blue light components and the scattered, converted yellow light components. The optical converter includes material including one or more of a YAG ceramic, a LuAG ceramic, and a magnesium-aluminum ceramic exhibiting strong scattering.

A light-source optical system according to the present invention includes a laser light source that radiates excitation light; a wavelength conversion unit that is irradiated with the excitation light to generate light having a wavelength different from that of the excitation light; and a light deflection and convergence unit that causes an odd number of light beams greater than or equal to three, radiated from the wavelength conversion unit in mutually different directions, to converge at and re-enter the wavelength conversion unit from the backward direction of another light beam, radiated in a direction different from the directions of the odd number of light beams greater than or equal to three, thereby making the odd number of light beams greater than or equal to three overlap the other light beam.

A trim assembly for a vehicle is provided herein. The trim assembly includes a backing panel defining a void therethrough. A foam panel is attached to the backing panel on a first side and is attached to a cover on a second opposing side. The foam panel and the cover are light transmissive. A light source is disposed within the void and is configured to emit excitation light. A photoluminescent structure is disposed on an inner periphery of the void and the first side of the foam panel and is configured to luminesce in response to excitation by the light source. A bumper extends into the void to a position past a bottom surface of the light source.

Phosphor elements comprising phosphors in a host material having a phosphorescence-emitting surface with surface nanostructures are disclosed. Phosphor wheels having such phosphor elements, methods of making such phosphor elements, and methods of using such phosphor elements are also disclosed.

Disclosed are an optical member and a display device. The display device includes a light source; a light conversion layer to convert a wavelength of light emitted from the light source; and a display panel into which the light is incident from the light conversion layer, wherein the light conversion layer includes a plurality of concave surfaces.

A lighting apparatus includes a wavelength converting apparatus. The wavelength converting apparatus includes a hollow tube and a wavelength converting material. The hollow tube has an accommodating chamber. The wavelength converting material is positioned in the accommodating chamber.

An optical assembly that is adapted to be located at a light path of light emitted from at least one light source and spaced apart from the at least one light source by a distance is provided. The optical assembly includes a wavelength converting device, which is a spatial structure, and a reflector. The reflector covers a portion of the wavelength converting device and exposes at least a portion of a region of at least one surface of the wavelength converting device. The light emitted from the at least one light source enters or leaves the wavelength converting device from at least the portion of area which is not covered by the reflector. An optical module including the light source and the optical assembly is further provided.