Disclosed is a luminaire including a ceiling mountable housing that defines an inner cartridge-receiving cavity accessible at an opening that is accessible in a healthcare space. A cartridge is provided to be received in the housing. The housing and the cartridge are configured to establish a first NSF-compliant sealing interface formed by at least one first barrier member extending along a first peripheral region between the housing and the cartridge to establish a first NSF-compliant pathogen barrier. The cartridge includes a light output region that is configured to locate an interior light guide and an exterior lens with an optical spacing therebetween. A second NSF-compliant sealing barrier interface is provided between the lens and the light guide formed by at least one second barrier member extending along a second peripheral region between the lens and light guide, and which is configured to establish a second NSF-compliant pathogen barrier therein.

An electronic device includes a plurality of sub-electronic modules arranged side by side. Each of the sub-electronic modules includes a housing having a top wall, a bottom wall, and a pair of side walls, and a light guide pipe mounted on one of the side walls. The light guide pipe has an incident end, an emergent end located at a front portion of the housing, and a main body located between the incident end and the emergent end and extending in a length direction of the housing. The incident ends of the light guide pipes located between at least a pair of adjacent housings are staggered by a predetermined distance in the length direction.

A lightguide component for illumination devices includes: a lightguide layer having a first principal face, a second principal face at an opposite side from the first principal face, and a light-receiving side face to receive light emitted from a light source; a first low-refractive index layer (20A) that is disposed at the first principal face side of the lightguide layer, the first low-refractive index layer having a refractive index n.sub.L1 which is smaller than a refractive index n.sub.GP of the lightguide layer; and a light distribution controlling structure (14A, 14B) capable of at least directing a portion of light propagating in the lightguide layer toward the first low-refractive index layer or in an opposite direction from the first low-refractive index layer. The lightguide component has a visible light transmittance of 60% or more, and a haze value of less than 10%.

A headphone includes a housing, a light emitting device and a printed circuit board. The light emitting device is mounted in the housing. The light emitting device includes a luminous unit, and a light guiding unit disposed close to the luminous unit. The light guiding unit has a base portion, an incident surface formed at an inner surface of an inner end of the base portion, an emitting surface formed at an outer surface of an outer end of the base portion, a first refracting surface, a first reflecting surface, a second reflecting surface, a second refracting surface, a light transmitting column, a positioning wall, an upper buckling arm and a lower buckling arm. The printed circuit board is mounted in the housing.

A light-emitting device includes a board, a light-emitting element mounted on a surface of the board, a support member on which the board is placed, and a cover having a plate shaped main cover body covering the light-emitting element and a tubular portion which receives a light guide body that guides light emitted from the light-emitting element. The main cover body includes a base, a protrusion protruding from the base toward the board, and a ridge disposed on a protruded end of the protrusion. A step is formed by the protrusion and the ridge, and the protrusion and the ridge extend in a same direction along the base.

A light source device includes: a light emitting device having an upper face comprising a light emission face; a first lens facing the light emitting device; and a second lens facing the first lens. A lower face of the first lens facing the light emitting device includes an entrance part provided in a center of the lower face where light from the light emitting device enters, and a light guide part provided on an outside of the entrance part to guide the light entering the entrance part. A lower face of the second lens facing the first lens includes a Fresnel lens face composed of a plurality of annular protruding portions.

A light-emitting device includes a board, a light-emitting element mounted on a surface of the board, a support member on which the board is placed, and a cover having a plate shaped main cover body covering the light-emitting element and a tubular portion which receives a light guide body that guides light emitted from the light-emitting element. The main cover body includes a base, a protrusion protruding from the base toward the board, and a ridge disposed on a protruded end of the protrusion. A step is formed by the protrusion and the ridge, and the protrusion and the ridge extend in a same direction along the base.

Provided is an LED lamp manufactured by an injection molding process, including a strip-shaped LED lamp, wherein the strip-shaped LED lamp includes a first strip-shaped conducting wire and a least one LED luminous body disposed on the strip-shaped conducting wire, and each of the LED luminous bodies includes a first chip and a second chip connected to the first chip via a second conducting wire; the LED lamp manufactured by the injection molding process further includes an injection molding body, and the first strip-shaped conducting wire penetrates into the injection molding body; the injection molding body is further formed, in an injection molding manner, with a fixing portion for fixing the LED lamp manufactured by the injection molding process in a hole to be penetrated; the first chip in each of the LED luminous bodies is an LED chip.

An electronic device such as a voice-controlled speaker device may have a housing. A speaker and other input-output components and control circuitry may be mounted within the housing. Light-emitting components may emit light that passes through a curved upper top cap portion or other housing structure. The light-emitting components may be interconnected using a flex circuit on a curved substrate or may be mounted on a planar circuit board. A subset of the light-emitting components may be rotated to improve color balance. Optical structures such as light guides, lens, microlenses, and/or a diffuser layer may be disposed over the light-emitting components to promote light mixing, to reduce hotspots, and to improve contrast on the top cap. The diffuser layer may be suspended using a support structure having baffle members to constraint the angular spread of the emitted light. Illuminated or persistently visible glyphs may be displayed in or near the top cap portion.

A light-emitting device includes a board, a light-emitting element mounted on a surface of the board, a support member on which the board is placed, and a cover having a plate shaped main cover body covering the light-emitting element and a tubular portion which receives a light guide body that guides light emitted from the light-emitting element. The main cover body includes a base, a protrusion protruding from the base toward the board, and a ridge disposed on a protruded end of the protrusion. A step is formed by the protrusion and the ridge, and the protrusion and the ridge extend in a same direction along the base.