Abstract: An LED device capable of emitting electromagnetic radiation ranging from about 200 nm to 365 nm, the device. The device includes a substrate member, the substrate member being selected from sapphire, silicon, quartz, gallium nitride, gallium aluminum nitride, or others. The device has an active region overlying the substrate region, the active region comprising a light emitting spatial region comprising a p-n junction and characterized by a current crowding feature of electrical current provided in the active region. The light emitting spatial region is characterized by about 1 to 10 microns. The device includes an optical structure spatially disposed separate and apart the light emitting spatial region and is configured to facilitate light extraction from the active region.

Abstract: The present invention provides an LED device capable of emitting electromagnetic radiation ranging from about 200 nm to 365 nm and a method. The device has a substrate member, the substrate member being selected from sapphire, silicon, quartz, gallium nitride, gallium aluminum nitride, or others and an active region overlying the substrate region. The active region comprises a light emitting spatial region comprising a p-n junction and characterized by a current crowding feature of electrical current provided in the active region. The device has an optical structure spatially disposed separate and apart the light emitting spatial region and is configured to facilitate light extraction from the active region.

Abstract: A device for providing ultraviolet light includes a shell for a portable device, wherein the shell includes an interior region and an exterior region, wherein the interior region is adapted to be disposed adjacent to the portable device, a power source configured to provide electrical power, a and an ultraviolet light source coupled to the power source and embedded into the exterior region of the shell, wherein the ultraviolet light source is configured to output the ultraviolet light in response to the electrical power.

Abstract: A portable water purification device comprises a portable power supply, an ultraviolet light source coupled to the portable power supply, wherein the ultraviolet light source is configured to output ultraviolet light, a container coupled to the ultraviolet light source, wherein the container is configured to hold water, and wherein the container is configured to reflect ultraviolet light, and an indicator configured to output a visual indication when the ultraviolet light source is outputting ultraviolet light.

Abstract: A device for protecting the beauty rims of ceilng-mounted water sprinklers comprises a shield member having a closed end removably attached to one end of an elongate handle. The shield member has an open end, the interior surface of which may be provided with a ring of adhesive material. In one preferred embodiment, the shield member is attachable to the beauty rim solely by the adhesive material. In another preferred embodiment, the shield member has a plurality of longitudinal, inwardly-directed ribs that are frictionally engageable against the protective receptacle within the beauty rim of the sprinkler on which the shield is installed.

Abstract: A device for protecting the beauty rims of ceiling-mounted water sprinklers comprises a shield member having a closed end removably attached to one end of an elongate handle. The shield member has an open end terminating in a flared lip, the interior surface of which is provided with a ring of adhesive material. The method of using the device includes the steps of (a) attaching the closed end of the shield member to the handle end; (b) placing the open end of the shield member over the sprinkler to cover the sprinkler and the rim, whereby the adhesive material adheres to the rim; (c) removing the handle from the closed end of the shield member, leaving the shield member attached to the rim by the adhesive material; (d) painting the ceiling around the shield member; and (e) removing the shield member from the rim.