The present application discloses a unitary gasket-reflector for use in light sources having at least one reflector and at least one gasket to seal the inside of the light sources against the elements.

A light emitting device (100) includes a phosphor application printed wiring board (30) in which a phosphor layer (36) is provided on a substrate surface, a first light emitting unit (20A) provided in the phosphor application printed wiring board (30) and outputting light having a peak wavelength in a wavelength region of visible light, a second light emitting unit (20B) provided in the phosphor application printed wiring board (30) and outputting light having a peak wavelength in a range of 315 nm to 470 nm (that is, near-ultraviolet ray), a photocatalyst unit (160) including a substance (photocatalyst) that undergoes a photocatalytic reaction with light of a second light emitting unit (20B), and a cover member (110) (lamp cover) that covers the phosphor application printed wiring board (30). The phosphor layer (36) is provided separately from the first light emitting unit (20A) and the second light emitting unit (20B).

A light emitting device (100) includes a phosphor application printed wiring board (30) in which a phosphor layer (36) is provided on a substrate surface, a first light emitting unit (20A) provided in the phosphor application printed wiring board (30) and outputting light having a peak wavelength in a wavelength region of visible light, a second light emitting unit (20B) provided in the phosphor application printed wiring board (30) and outputting light having a peak wavelength in a range of 315 nm to 470 nm (that is, near-ultraviolet ray), a photocatalyst unit (160) including a substance (photocatalyst) that undergoes a photocatalytic reaction with light of a second light emitting unit (20B), and a cover member (110) (lamp cover) that covers the phosphor application printed wiring board (30). The phosphor layer (36) is provided separately from the first light emitting unit (20A) and the second light emitting unit (20B).

A device for providing light including: a housing; an array of a plurality of LED lights mounted to the housing, wherein, when active, each LED emits a highest intensity beam of light along a primary axis and emits a lower intensity beam of light along a secondary axis; a lens mounted to the housing, the lens including an optic element corresponding to each of the plurality of LED lights, each optic element intersected by the primary axis of the corresponding LED light; and a translucent edge-light diffusing layer located between two or more of the plurality of LED lights, the edge diffusing layer is not intersected by the primary axis and is intersected by the secondary axis of the LED lights.

A device for providing light including: a housing; an array of a plurality of LED lights mounted to the housing, wherein, when active, each LED emits a highest intensity beam of light along a primary axis and emits a lower intensity beam of light along a secondary axis; a lens mounted to the housing, the lens including an optic element corresponding to each of the plurality of LED lights, each optic element intersected by the primary axis of the corresponding LED light; and a translucent edge-light diffusing layer located between two or more of the plurality of LED lights, the edge diffusing layer is not intersected by the primary axis and is intersected by the secondary axis of the LED lights.

A method 100 of manufacturing a ceramic light transmitting barrier cell for enclosing a luminescent material and such a ceramic light transmitting barrier cell are provided. A part of a pre-formed barrier cell is formed 102 by providing a material mix comprising a binder and inorganic particles in a first mold. On the part is provided 104 a sacrificial layer for defining a cavity. A remainder part of the pre-formed barrier cell is formed 106 by providing the material mix in a second mold which already comprises the part with the sacrificial layer. The sacrificial layer is at least partially removed 112 to obtain the cavity. Optionally, the pre-formed barrier cell is heated 114, 116 (and/or sintered) to obtain the ceramic light transmitting barrier cell. The method 100 of manufacturing is suitable for producing at large scale relatively cheap and accurately formed ceramic light transmitting barrier cells.

An LED lamp packaged by liquid sealant contains: a transparent sheet, a grid casing, a printed circuit board (PCB), and a lid. The transparent sheet covers on a top of the grid casing, the PCB is defined between the grid casing and the lid, and the lid covering a bottom of the grid casing and fixing the PCB. The grid casing includes at least one feeding orifice formed on the top thereof and communicating with an accommodation chamber defined on the bottom of the grid casing, and liquid sealant is fed into the grid casing from the at least one feeding orifice, and after feeding the liquid sealant into the grid casing, the least one feeding orifice is closed.

An LED lamp packaged by liquid sealant contains: a transparent sheet, a grid casing, a printed circuit board (PCB), and a lid. The transparent sheet covers on a top of the grid casing, the PCB is defined between the grid casing and the lid, and the lid covering a bottom of the grid casing and fixing the PCB. The grid casing includes at least one feeding orifice formed on the top thereof and communicating with an accommodation chamber defined on the bottom of the grid casing, and liquid sealant is fed into the grid casing from the at least one feeding orifice, and after feeding the liquid sealant into the grid casing, the least one feeding orifice is closed.

Today the use of false ceilings is decreasing as it involves too high an energy consumption. The tendency nowadays is to have bare concrete ceilings onto which luminaires are mounted, which often causes acoustical problems. The invention deals with these acoustical problems and relates to an illumination device (1) comprising a concave reflector (2) bordering, with an outer edge (3), on a light emission window (4). The reflector has a reflective surface (7) facing the light emission window. The illumination device further comprises lamp holding means (8) for accommodating a light source (9), and said lamp holding means being positioned in between the reflective surface and the light emission window. The illumination device is characterized in that the reflector is made of acoustically absorbing material.

A lighting system comprises at least one excitation source (5), preferably an LED, operable to generate and radiate excitation radiation of a first wavelength (.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.