The present disclosure describes a plasma illumination device with microwave pumping, comprising: a hermetically sealed casing, a magnetron, a microwave resonator containing a rotatable electrodeless plasma lamp, a coaxial coupling line running parallel to the casing axis, for transmitting microwave power from the magnetron to the microwave resonator, at least one heat sink located on the inner walls of the casing and providing heat transfer through the casing to the external environment, and a light-transmitting hermetically sealed hollow cylinder fitted in a hermetically sealed way on the casing above the microwave resonator. This results in an illumination device with microwave pumping, which may be used to illuminate objects located in unfavorable environmental conditions, particularly those in which there is a high content of dust or other contaminants, or in an aqueous environment at great depths.

A photochemical reactor (1) having a hollow container body (10) having a side wall (11) made of a material arranged to contain an excited luminous plasma with electromagnetic fields and defining a closed excitation chamber (12) in which, in use, an excitable material (15) is present in such a way to obtain a discharge of the excited luminous plasma by microwave irradiation. The hollow container body (10) is provided with at least a hollow (20) that protrudes into the excitation chamber (12) and at least a microwave radiation source positioned, in use, in the hollow (20), and arranged to emit radiations in such a way to excite the excitable material (15) producing a luminous plasma.

A plasma light with at least one non-rotating light bulb is disclosed. The light includes a conducting cavity structure with a radiation source input port and a light bulb. The geometry of the cavity is designed to generate electrical fields with time-dependent geometrical designed orientation within parts of the light bulb, while the direction of the radiation fields from the radiation source port caused by a microwave generator to the input port fields is stationary.

A microwave-excited light source device according to the present application comprises: a center electrode that extends in an axial direction; an annular electrode that is disposed concentrically with respect to the center electrode; an arc tube that is disposed in an annular space formed between the center electrode and the annular electrode and extends along the axial direction in an elongated shape: a connection end plate to which the other pole of a microwave generation source is electrically connected; a connector that electrically connects the annular electrode and the connection end plate; and a buffer that is elastically deformed when the arc tube is subjected to an external force, thereby suppressing stress to be applied to a contact surface between the annular electrode and the connector.

Provided is an electrodeless lighting system including a solid state power amplifier (SSPA) configured to generate a microwave having a predetermined frequency, a resonator having a shielding structure configured to shield the microwave having a predetermined frequency so as to prevent the microwave from being discharged to the outside of the resonator, a connector configured to connect the SSPA to the resonator, an antenna configured to discharge the microwave having the predetermined frequency, which is generated in the SSPA, to the resonator, a bulb disposed in the resonator and including a light emitting material that is excited by the microwave having the predetermined frequency to emit light, and a support configured to support the bulb. Here, the antenna is a conductor introduced into the resonator through the connector.

An electrodeless lamp driven by a microwave generator is disclosed. The electrodeless lamp includes a first infill composed of mercury-free metal halide and provides a continuous full spectrum radiation including ultraviolet ray, visible light, and infrared ray. Thereby, the electrodeless lamp, which meets the standard of AM 1.5 G, has advantages of environmental friendliness, high efficacy lighting, long service life, and low light decay, and therefore, have become applicable in the field of solar simulators.

A microwave-excited light source device according to the present application comprises: a center electrode that extends in an axial direction; an annular electrode that is disposed concentrically with respect to the center electrode; an arc tube that is disposed in an annular space formed between the center electrode and the annular electrode and extends along the axial direction in an elongated shape: a connection end plate to which the other pole of a microwave generation source is electrically connected; a connector that electrically connects the annular electrode and the connection end plate; and a buffer that is elastically deformed when the arc tube is subjected to an external force, thereby suppressing stress to be applied to a contact surface between the annular electrode and the connector.

A gasket for use in an ultraviolet light source is provided. The gasket includes a body portion formed of an elastomeric material. The body portion is electrically conductive.

A plasma emission device in an embodiment includes: an electromagnetic wave generator; a waveguide transmitting an electromagnetic wave emitted from the electromagnetic wave generator, an antenna receiving the electromagnetic wave transmitted through the waveguide; an electromagnetic wave focuser which is irradiated with the electromagnetic wave from the antenna; and an electrodeless bulb disposed in the electromagnetic wave focuser. A light-emitting material filled in the electrodeless bulb is excited by the electromagnetic wave focused by the electromagnetic wave focuser to perform plasma emission. The electromagnetic wave generator includes a cathode part and an anode part. A maximum output efficiency of the electromagnetic wave to be generated with an input power of 700 W or less is 70% or more.

A light source to be powered by microwave energy, having a dielectric body or fabrication of material lucent for exit of light therefrom, a receptacle within the dielectric body or fabrication, and a lucent microwave-enclosing Faraday cage surrounding the dielectric body or fabrication. The dielectric body or fabrication within the Faraday cage forms at least part of a microwave resonant cavity. A sealed plasma enclosure of lucent material within the receptacle has a means for locating the plasma enclosure within the receptacle with respect to the dielectric body or fabrication.