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.

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.

Provided is a new light source device using an excimer lamp, particularly, a light source device for sterilization and deodorization. The light source device includes an excimer lamp and a flyback-type lighting device that supplies power to the excimer lamp. The lighting device includes a transformer, a switching element, and a control circuit that supplies a drive signal to the switching element. The control circuit controls the switching element on and off so that the switching frequency (FS) for the switching element at the time of starting to light is lower than the switching frequency (FO) at the time of steady-state lighting, and the ON-duty (TS) for the switching element at the time of starting to light is lower than the ON-duty (TO) at the time of steady-state lighting.

Provided is a new light source device using an excimer lamp, particularly, a light source device for sterilization and deodorization. The light source device includes an excimer lamp and a flyback-type lighting device that supplies power to the excimer lamp. The lighting device includes a transformer, a switching element, and a control circuit that supplies a drive signal to the switching element. The control circuit controls the switching element on and off so that the switching frequency (FS) for the switching element at the time of starting to light is lower than the switching frequency (FO) at the time of steady-state lighting, and the ON-duty (TS) for the switching element at the time of starting to light is lower than the ON-duty (TO) at the time of steady-state lighting.

A dimmer, including a housing assembly including a plurality of terminals at least partially disposed therein, the plurality of terminals including a line terminal, a neutral terminal, and a load terminal; at least one variable control mechanism coupled to the housing assembly, the at least one variable control mechanism being configured to adjustably select a user adjustable load setting, the user adjustable load setting being adjustable between a minimum setting and a maximum setting; a series pass element disposed in series the line terminal and the load terminal; a sensor producing a sensor output representative of load current at the load terminal; and a controller configured to determine, according to a characteristic of the load current, whether a load connected to the load terminal is a capacitive load, wherein the controller is further configured to, upon determining that the load is a capacitive load, provide sufficient power to the load sufficient to cause the load to illuminate before reducing the power the user adjusted load setting.

The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.