Provided is an ultraviolet light irradiation device that is capable of causing effective inactivation of microorganisms as well as a method of using the ultraviolet light irradiation device.

An ultraviolet light irradiation device includes a light source that radiates ultraviolet light with a wavelength in a range of 190 nm to 235 nm; a housing that houses the light source; an extracting portion that extracts the ultraviolet light that is radiated from the light source and causes it to be directed toward an exterior of the housing; and a diffusing member that diffuses the ultraviolet light.

Provided is an ultraviolet light irradiation device that is capable of causing effective inactivation of microorganisms as well as a method of using the ultraviolet light irradiation device.

An ultraviolet light irradiation device includes a light source that radiates ultraviolet light with a wavelength in a range of 190 nm to 235 nm; a housing that houses the light source; an extracting portion that extracts the ultraviolet light that is radiated from the light source and causes it to be directed toward an exterior of the housing; and a diffusing member that diffuses the ultraviolet light.

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, 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, 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, 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).

A light irradiation device according to an embodiment of the present disclosure has high light irradiation efficiency and cooling efficiency and can be reduced in size. The light irradiation device includes an excimer lamp including a light emitting tube that emits light, and a lamp electrode provided on an outside of the light emitting tube, and a case including a case body in which the excimer lamp is accommodated, a connection support provided at one side of the case body to be connected to the lamp electrode, and a case electrode provided at the other side of the case body to be in contact with a surface of the light emitting tube.

A light irradiation device according to an embodiment of the present disclosure has high light irradiation efficiency and cooling efficiency and can be reduced in size. The light irradiation device includes an excimer lamp including a light emitting tube that emits light, and a lamp electrode provided on an outside of the light emitting tube, and a case including a case body in which the excimer lamp is accommodated, a connection support provided at one side of the case body to be connected to the lamp electrode, and a case electrode provided at the other side of the case body to be in contact with a surface of the light emitting tube.

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.

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.