A light-emitting device includes an ultraviolet light LED sealed in a package. The LED is bonded to a substrate with an alloy bonding material. The LED is covered with an enclosed gas containing oxygen gas and further covered with a lid member that is hermetically bonded to the substrate. The lid member defines a space filled with the enclosed gas and constitutes the package. The lid member transmits the ultraviolet light emitted from the LED.

An illumination device includes a plurality of light-emitting elements (LEEs); a light guide extending in a forward direction from a first end to a second end to receive at the first end light emitted by the LEEs and to guide the received light to the second end; an optical extractor optically coupled to the second end to receive the guided light, the optical extractor including a redirecting surface to reflect a first portion of the guided light, the reflected light being output by the optical extractor in a backward angular range, and the redirecting surface having one or more transmissive portions to transmit a second portion of the guided light in the forward direction; and one or more optical elements optically coupled to the transmissive portions, the optical elements to modify the light transmitted through the transmissive portions and to output the modified light in a forward angular range.

An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.

An area light is provided including a housing defining a central axis having a first end, a second end opposite the first end, and a side portion; a cover mounted on the first end of the housing; a light module disposed on the first end of the housing, the light module comprising a heat sink and at least one light-emitting diode (LED) to emit light through the cover and in a direction that extends 360 degrees around the center axis; and a battery receptacle disposed on the side portion of the housing to receive a removable battery pack and supply electric power form the removable battery pack to the at least one LED. At least one hook is provided on or adjacent the first end of the housing.

A dental light comprises at least one light emitting diode light source configured to produce a light beam and at least one collimating lens system situated to receive the light beam. The collimating lens system is configured to collect and collimate the light beam. The collimating lens system can additionally modify the beam through controlled diffusion or shape the beam using an aperture.

Disclosed herein is a multi-element flexible strap light which includes a plurality of light elements disposed on a flexible chassis. The flexible chassis may include a first flexible layer, a printed circuit board, and a second flexible layer. The flexible chassis may be further contained within a third flexible layer, such as a layer of polycarbonate plastic. Further disclosed is a multi-element flexible strap light system which includes a plurality of light elements disposed on a flexible chassis and a remote battery.

An electronic lighting device and a method for manufacturing the same are disclosed. The electronic lighting device includes an outer shell with a first opening at a top surface and a core contained within the outer shell. The core includes a left semicircular structure and a right semicircular structure arranged to form a circular shape that is aligned with the first opening at the top surface of the outer shell. The device includes a flame component positioned partially in the internal cavity. The device also includes a light emitting element disposed at least partially in a lighting element installation cradle on a sidewall of the core to hold the light emitting element at a non-zero angle with respect to a longitudinal axis of the electronic lighting device to allow illumination of the flame component. The device further includes a control circuit to control an operation of the lighting emitting element.

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 method is provided, wherein a lighting device (200, 300, 400, 500) comprising an at least partly light transmitting envelope (110) and a solid state light source (120) is manufactured. The method comprises arranging (710) an at least partly light transmitting plastic material (140) in a mold (130) having a surface structure (132) arranged on an inner surface portion of the mold and blow molding (720) the plastic material so as to form the envelope. During the blow molding, the surface structure is at least partly transferred to the at least partly light transmitting plastic material, thereby forming an optical structure (150) on a portion of an outer surface of the envelope. The envelope is then removed (730) from the mold and arranged (740) to at least partly enclose the solid state light source. The optical structure may be formed to generate a desired optical effect.

Lighting apparatus for high pressure underwater use are disclosed. In one embodiment the lighting apparatus comprises a housing for withstanding ambient exterior pressure at a depth of approximately 500 feet or more, a transparent pressure bearing window positioned at a forward end of the housing, and a multilayered stack for bearing substantially all of the loading applied to the transparent pressure bearing window at a depth of approximately 500 feet or more disposed in the housing behind the transparent pressure bearing window is disclosed.