An underwater light having light emitting units positioned around the central axis of a cylindrical structure. The light emitting units project light in multiple directions around the central axis of the cylindrical structure. A transparent cover is located over the light emittign units and a power cord is attached to the underwater light. The power cord adapted to be connected to a power source out of the water to provide power to the underwater light when the underwater light is in the water.

A lighting apparatus for use as a surgical headlamp is disclosed. A light emitting diode is positioned in a recess within a frustoconical, thermally-conductive heat sink that has a several circumferential ridges to provide a desired surface area for heat transfer. The diode and the heat sink are provided in a housing that also includes a fan for drawing ambient air into the housing to contact the heat sink and exhausting heated air. A lens is snap-fit into a slide that frictionally engages the interior of the housing, allowing a user to adjust the spacing between the light emitting diode and the lens as desired. Personal cooling apparatuses usable with the lighting apparatus are also described. Auxiliary undergown switches are also described as are personal cooling apparatuses.

In some embodiments, a light fixture may include a lighting enclosure having two sides, two ends, and a top and bottom section that define a channel. The light fixture may further include a light module disposed that may include a first and a second core section. The first core section may have a first retention element. The second core section may have a second retention element. The first retention element may be configured to engage the second retention element, releasably coupling the first and second core section together. The light fixture may also include a light source operatively coupled the second core section.

A fastening device fastens a lighting assembly in an elongate rail profile open on one longitudinal side. The fastening device is set up to be mechanically coupled to the lighting assembly and has a body through which the lighting assembly can be overlapped in sections from a rear side area of the same, which is facing away from a light output side of the lighting assembly. The fastening device has latching elements which are formed to engage behind an edge or undercut running along the rail profile in a latching manner. The fastening device has an actuating element that, when the fastening device is holding the lighting assembly inserted into the rail profile in this position, can be actuated by an operator from the open longitudinal side in order to move each of the latching elements into a release position.

A lighting device may include a lens, an emitter configured to emit light through the lens, and a reflector. The reflector may define a cavity that extends from a first end to a second end of the reflector. The emitter may be received in the first end of the reflector, and the lens may be attached to the second end of the reflector. The lens may include teeth that extend from a rear surface of a rim of the lens. The reflector may include a collar at the second end, and the collar may include attachment clips that are configured to lock the teeth in place and retain the lens in attachment to the reflector.

An optical cell (10) for forming a luminaire, the optical cell (10) comprising: (i) a light collector element (14), (ii) a cover element (15) attached to the light collector element (14), and (iii) a transmission element (16) mounted between the light collector element (14) and the cover element (15); wherein: (iv) the light collector element (14) comprises a body including: an input, e.g. an input opening, for receiving and collecting light from at least one light source, e.g. one or more LEDs (32) pre-mounted on a circuit- or wiring board (30); an output, e.g. an output opening, for propagating collected light towards the transmission element (16); at least one wall (52) defining one or more portions of the body, such as an internal chamber (53) therewithin, between its input and output, and configured for collecting light entering the body/chamber (53) via its input and conveying or directing said light towards its output; and attachment means (55, 65) for mechanically attaching the light collector element (14) to the cover element (15) and securing the transmission element (16) therebetween; (v) the cover element (15) comprises: an input opening facing towards the transmission element (16) and for receiving light transmitted thereby; an output opening via which light is outputted from the optical cell (10); and at least one internal surface (62) defining a cavity (63) within the cover element (15) between its input and output openings, the cavity's internal surface(s) (62) being configured for allowing or effecting passage of light, or a portion of the light, through the cavity (63) from the cover element's input opening towards its output opening; and (vi) the transmission element (16) comprises: one or more planar optical elements, wherein the or each optical element includes a first surface facing towards the output of the light collector element (14) and a second surface facing towards the input opening of the cover element (15), and the or each optical element exhibits a predetermined optical activity or function in its transmission of light incident thereon which has exited the output of the light collector element (14) and is transmitted by the transmission element (16) towards the input opening of the cover element (15).

An arrangement (1) for forming into a luminaire, the arrangement (1) comprising: one or more optical cells (10) each including means for receiving, collecting and redistributing light from a respective one of one or more light sources (32), e.g. LEDs; and a configuring element (20) for accommodating the one or more optical cells (10) in a predefined relative configuration or pattern; wherein the configuring element (20) comprises a sheet or plate or film of material having one or more apertures (22) therein in the said predefined relative configuration or pattern, each aperture (22) being for receiving therein a respective one of the said cells (10).

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.

The present disclosure refers to a light module, comprising a lens unit, which is formed with a bottom, a lid and one or more side walls between the bottom and the lid, wherein the one or more side walls provide one or more insertion openings; a printed circuit board unit, which carries one or more light sources and is inserted into the lens unit through a first insertion opening of the one or more insertion openings such that light emitted by the one or more light sources exits the light module through the bottom and/or the lid of the lens unit; and a housing unit, which is provided with a bottom opening, a lid opening and one or more side walls between the bottom opening and the lid opening, wherein the lens unit is arranged within the housing unit such that the bottom opening of the housing unit is closed by the bottom of the lens unit, the lid opening of the housing unit is closed by the lid of the lens unit, and the one or more insertion openings of the lens unit is closed by the one or more side walls of the housing unit. It also refers to an external rear view device with such a light unit.

A corner lamp includes a lamp base, a light source module set on the lamp base, a first optical element set above the light source module, and an interconnection interface, the lamp base includes at least one corner section, the light source module is set on the outer wall of the corner section and extends along the corner direction; the present invention also discloses an interconnection lighting system; the corner lamp and interconnection lighting system of the present invention, the corner lamp itself can emit light, solving the problem of dark areas in the corner interconnection in the prior art.