A device for emitting ultraviolet light includes at least one excimer lamp and a housing for the excimer lamp(s). Each excimer lamp has a discharge vessel filled with light-emitting gases, and a pair of first and second electrodes that are placed in contact with the discharge vessel and produce a dielectric barrier discharge inside the discharge vessel. The housing is made of an insulating and heat-resistant resin material. The housing is configured to house the excimer lamp(s), and has a light-emitting window that allows light with a center wavelength in a range from 200 nm to 230 nm emitted from the excimer lamp(s) to exit from the housing.

A can type fixture including a housing adapted for insertion into a hole in a ceiling. An excimer bulb or plurality of excimer bulbs supported in the housing and adapted for emitting Far UV C radiation at a plurality of wavelengths. A filter or a plurality of filters adapted for removing Far UV C wavelengths harmful to humans. A reflector and/or a diffusion layer. A driver/power supply is supported by the housing. The driver/power supply is adapted for providing electrical power to the excimer bulb(s) and is in electrical communication with the excimer bulb(s). The driver/power supply may be adapted to dim the excimer bulb(s). An illumination element, such as an LED array may be supported in the housing. The fixture may also include a motion sensor, crowd density sensor, proximity sensor, and/or distance sensor and may communicate via IoT.

A can type fixture including a housing adapted for insertion into a hole in a ceiling. An excimer bulb or plurality of excimer bulbs supported in the housing and adapted for emitting Far UV C radiation at a plurality of wavelengths. A filter or a plurality of filters adapted for removing Far UV C wavelengths harmful to humans. A reflector and/or a diffusion layer. A driver/power supply is supported by the housing. The driver/power supply is adapted for providing electrical power to the excimer bulb(s) and is in electrical communication with the excimer bulb(s). The driver/power supply may be adapted to dim the excimer bulb(s). An illumination element, such as an LED array may be supported in the housing. The fixture may also include a motion sensor, crowd density sensor, proximity sensor, and/or distance sensor and may communicate via IoT.

A broadband radiation source is disclosed. The source may include a gas containment vessel configured to maintain a plasma and emit broadband radiation. The source may also include a recirculation gas loop fluidically coupled to the gas containment vessel. The recirculation gas loop may be configured to transport gas from one or more gas boosters configured to pressurize the low-pressure gas into a high-pressure gas and transport the high-pressure gas to the recirculation loop via an outlet. The system includes a pressurized gas reservoir fluidically coupled to the outlet of the one or more gas boosters and is configured to receive and store high pressure gas from the one or more gas boosters. The source includes a pressurized gas reservoir located between the one or more gas boosters and the gas containment vessel and is configured to receive and store high pressure gas from the one or more gas boosters.

A broadband radiation source is disclosed. The source may include a gas containment vessel configured to maintain a plasma and emit broadband radiation. The source may also include a recirculation gas loop fluidically coupled to the gas containment vessel. The recirculation gas loop may be configured to transport gas from one or more gas boosters configured to pressurize the low-pressure gas into a high-pressure gas and transport the high-pressure gas to the recirculation loop via an outlet. The system includes a pressurized gas reservoir fluidically coupled to the outlet of the one or more gas boosters and is configured to receive and store high pressure gas from the one or more gas boosters. The source includes a pressurized gas reservoir located between the one or more gas boosters and the gas containment vessel and is configured to receive and store high pressure gas from the one or more gas boosters.

An excimer lamp, which includes a first lamp cap, a second lamp cap, a first electrode head, a second electrode head, a conductive heat dissipation rod, a light-transparent annular sleeve, and a conductive annular net. The heat dissipation rod and conductive annular net are respectively connected to the first and second electrode heads to excite an excimer gas in the light-transparent annular sleeve. Inside the excimer lamp the, a large amount of heat can be conducted and dissipated through the conductive heat dissipation rod, and then through the heat dissipation of the first lamp cap or by heat conductive annular rings between sections of the lamp. At the same time, the conductive annular nets can also conduct and dispatch a large amount of above mentioned heat; the heat may be further conducted and dispatched through the second lamp cap or through the heat conductive annular rings, if present.

An excimer bulb assembly, with an excimer bulb, at least one integral captured reflector, and an integral filter such that the excimer bulb only emits substantial UV radiation between 200 nm and 230 nm, using a filter that passes light from about 200 nm to 234 nm (+/−2 nm).

An excimer bulb assembly including an excimer bulb emitting a beam of UV light at a wavelength of 222 nm. The excimer bulb may include a filter that blocks any unwanted wavelengths of UV light. The assembly includes a focusing lens positioned a distance from the excimer bulb such that the emitted beam of UV light strikes the focusing lens at an angle. The distance between the excimer bulb and the focusing lens may be varied such that the angle changes when the distance is varied. A plurality of excimer bulbs emitting a beam of UV light at a wavelength of 222 nm in a pattern may be including in a fixture. The fixture may include a housing with the plurality of excimer bulbs are secured in the housing. At least one of the plurality of excimer bulbs may be adapted to independently swivel with respect to the housing so as to change the pattern of the emitted beam of UV light. Each of the plurality of excimer bulbs may be adapted to independently tilt with respect to the housing.

An excimer bulb fixture including an excimer bulb emitting a beam of UV light at a far UV C wavelength. The fixture includes a krypton/chloride bulb, a band pass filter and a diffusion layer or lens. The krypton/chloride bulb is adapted to project a beam of far UV C light through the filter and then through the diffusion layer or lens. The band pass filter is adapted to block substantial UV radiation wavelengths longer than 234 nm. The diffusion layer or lens is adapted to widen the beam of far UV C light. A method far widening a beam of far UV C light includes the steps of projecting a beam of far UV C light produced by a krypton/chloride bulb through a band pass filter; blocking substantially UV C radiation longer than 234 nm; projecting the filtered beam through a diffusion filter or lens; and, widening the filtered beam.

An excimer bulb assembly including a krypton/chlorine excimer bulb and a pass filter. The excimer bulb assembly does not emit substantial UV C radiation in wavelengths longer than deadly 240 nm through UV C wavelengths. The pass filter is adapted to block substantial UV C radiation in wavelengths in the range of 240 nm-280 nm. The assembly may include a captured reflector, a smart chip, and/or a heat sink. The bulb and its electrical connectors may form a cartridge. The assembly may include a housing and the cartridge may swivel in the housing.