Provided are a gas treatment method and a gas treatment device that enable efficient treatment of a VOC-containing gas to be treated by using ultraviolet light with a main emission wavelength of 180 nm or less.

This method is a method for treating a gas to be treated containing a mixture of air and a substance that is a type of VOC and that is subjected to treatment by causing the gas to be treated to flow through a treatment space. A light source designed to emit ultraviolet light having a main emission wavelength of 160 nm to 180 nm is located in the treatment space, and the gas to be treated is passed through a gap with a separation distance of 10 mm or less from a light-emitting area of the light source at a flow velocity of 23 m/s or less.

An interior aircraft lighting device includes at least two discharge light modules, including at least one first discharge light module and at least one second discharge light module, wherein each discharge light module contains at least one excitable gas, which emits electromagnetic radiation pursuant to electric excitation The device also includes multiple electrodes, wherein at least one pair of electrodes is assigned to each discharge light module for applying an electric field to the at least one excitable gas within the respective discharge light module. The two electrodes of each pair of electrodes are spaced apart from each other along a longitudinal direction (A) of the respective discharge light module. The pairs of electrodes include at least one first pair of electrodes assigned to the at least one first discharge light module, and at least one second pair of electrodes assigned to the at least one second discharge light module.

An excimer lamp includes light-emitting gases containing krypton gas and chlorine gas in a sealing body composed of fused quartz glass having an absorption band at least in a wavelength band of 240 nm to 260 nm. An ultraviolet light irradiation device includes: an excimer lamp having light-emitting gases containing krypton gas and chlorine gas in a sealing body; a housing having an extraction part for extracting ultraviolet light emitted from an excimer lamp; and fused quartz glass disposed in the extraction part and having an absorption band at least in a wavelength band of 240 nm to 260 nm.

The present application discloses an ultraviolet lamp tube and a novel gas discharge UV lamp, which, through unique coating methods, can ensure monochromaticity of light output of the light source, while increasing the luminous angle of the ultraviolet lamp tube, thus effectively improving the light efficiency, simplifying structure, and greatly reducing production costs.

An excimer lamp is such that that an interior of a discharge vessel is filled with a first gas including krypton (Kr) or xenon (Xe); a second gas including chlorine (Cl) or bromine (Br); and a third gas which is at least one species selected from among the group consisting of argon (Ar), neon (Ne), and helium (He), and which exhibits a partial pressure P.sub.b that is not less than a partial pressure P.sub.lg of the first gas.

To improve startability in a UV irradiation apparatus equipped with excimer lamps. The UV irradiation apparatus includes a plurality of excimer lamps each having a light-emitting tube filled with a discharge gas containing a noble gas. The plurality of excimer lamps includes a first excimer lamp filled with the discharge gas at a first enclosed gas pressure and a second excimer lamp filled with the discharge gas at a second enclosed gas pressure lower than the first enclosed gas pressure. The first excimer lamp is placed in a position such that at least part of light emitted from the second excimer lamp is allowed to enter the first excimer lamp.

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 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.

Electrodeless high intensity discharge lamps have the promise of higher reliability and higher efficiency than traditional electroded high intensity discharge lamps. However most electrodeless HIDs operate in the frequency range of around 400 MHz to 2.5 GHz resulting in expensive, inefficient RF drivers that reduce the overall efficacy of the lamp. Operating the lamp at lower frequencies results in substantial increase in the size of the resonators used in traditional electrodeless HIDs. In this invention a novel design is used to lower the operating frequency of the resonator without increasing the size of the resonator. This provides an avenue to increase the conversion efficiency of the RF driver and the efficacy of the lamp system.

A sterilizing lamp includes a discharge tube, a ground electrode part, a high-voltage electrode part, a safety cover, and a light shield. The discharge tube is filled with discharge gas for generating excimer light. The ground electrode part and the high-voltage electrode part generate discharge in the discharge tube to excite the discharge gas. The safety cover is made of an electrically insulating organic material and covers the high-voltage electrode part. The light shield is made of an electrically insulating inorganic material and intervenes between the discharge tube and the safety cover to block the excimer light traveling from the discharge tube toward the safety cover.