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 lamp includes a dielectric tube, an end cap, a conductive hollow tube, and an electrode grid. The dielectric tube has a closed end and an open end, and defines a cavity. The end cap sealingly covers the open end. The conductive hollow tube passes through the end cap and into the cavity of the dielectric tube, with a volume defined between an exterior surface of the conductive hollow tube and an interior surface of the dielectric tube. The volume is configured to hold a gas. The electrode grid is disposed on an exterior surface of the dielectric tube.

An excimer bulb assembly including an excimer bulb and a pass filter such that the excimer bulb assembly does not emit substantial UV radiation in wavelengths longer than 231 nm, 232 nm, 233 nm, 234 nm or 235 nm. The wavelengths are measured at an incident angle of zero (0) degrees to the filter plane. The pass filter is preferably constructed of a plurality of layers of hafnium oxide, and most preferably constructed of less than seventy five (75) layers of hafnium oxide. The excimer bulb, pass filter, and two electrical connectors may be adapted to form a cartridge which may be adapted to swivel along its main axis. The cartridge may further include a smart chip. The smart chip may retain and store information regarding the assembly and preferably retains hours of use of the excimer bulb.

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 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.

A cylindrical or flat far ultraviolet-C (UVC) 222 nm excimer lamp and a method for its manufacture are provided. The cylindrical or flat far UVC 222 nm excimer lamp can be used for safely sterilizing microorganisms (bacteria, fungi, or viruses) from the human body or otherwise, which can be used periodically or continuously. It comprises an anode inside of the lamp, a first insulator on the top of the anode, a second insulator above the first insulator with a height or distance, a connecting cover connecting the sides of the insulator the first with a second insulator for closing the gap or chamber, a valve on one side of the connecting cover for gas injection into the gap or chamber, and a cathode on the outside of the second insulator which is the same length and/or width as the anode.

In the excimer lamp according to the present invention, a flat discharge vessel having a substantially rectangular cross-sectional shape and comprising a pair of planar parts and a pair of side-surface parts has a pair of external electrodes disposed on the respective outer surfaces of the planar parts. The end parts of the external electrodes are provided with an auxiliary electrode extending to a region that is made smaller than the distance between the planar parts. A lead that supplies electricity to the external electrode is connected to the auxiliary electrode in the region that is made smaller than the distance between the planar parts.

A gas processing device includes: a casing that includes a first end having a first opening region constituting an intake port, a second end having a second opening region constituting an exhaust port, and a main body portion on the inside of which is formed a hollow portion; a discharge lamp that has a tube body which is disposed in the hollow portion and which has a shape extending in the first direction, a first electrode, and a second electrode, the discharge lamp that emits ultraviolet rays from the tube body; a power supply unit arranged outside the casing; and a first power supply line and a second power supply line that are wired so as to pass through a side closer to the first end than the main body portion, and that electrically connect the power supply unit to the first electrode and the second electrode.

An excimer bulb assembly including an excimer bulb and a pass filter such that the excimer bulb assembly does not emit substantial UV radiation in wavelengths longer than 231 nm, 232 nm, 233 nm, 234 nm or 235 nm. The wavelengths are measured at an incident angle of zero (0) degrees to the filter plane. The pass filter is preferably constructed of a plurality of layers of hafnium oxide, and most preferably constructed of less than seventy five (75) layers of hafnium oxide. The excimer bulb, pass filter, and two electrical connectors may be adapted to form a cartridge which may be adapted to swivel along its main axis. The cartridge may further include a smart chip. The smart chip may retain and store information regarding the assembly and preferably retains hours of use of the excimer bulb.

A light irradiation device includes: a lamp that has a lamp back surface on which a lamp back surface electrode is provided, and a lamp major surface which faces the lamp back surface and on which a lamp major surface electrode is provided, and that emits light from the lamp back surface; a housing forming an internal space in which the lamp is disposed, together with a vacuum window that transmits the light emitted by the lamp; and a heat sink that discharges heat from the lamp. The heat sink is thermally connected to the lamp major surface. The housing includes a suction pipe joint serving as an inlet for compressed air to be supplied to the internal space, and a discharge pipe joint serving as an outlet for the compressed air that has received the heat from the heat sink.