Abstract:
A resonator for an electrodeless lighting system may include an inner space configured to receive an electrodeless bulb that emits light by plasmarizing a light emitting material filled inside of the electrodeless bulb. Additionally, the resonator may have light transmission holes configured to shield microwaves, generated by a microwave generator and applied to the inner space, from being discharged to an exterior of the resonator. Thus, the resonator may be configured to transmit light emitted from the electrodeless bulb. Further, the resonator may be provided with a low aperture ratio portion that has a low aperture ratio extending from a predetermined region in a circumferential direction of the resonator, and a high aperture ratio portion that has a higher aperture ratio than the low aperture ratio portion. In this regard, the high aperture ratio portion may be formed in the remainder of the circumferential direction of the resonator.