Patent ID: 9305763
Filing Date: 2016-04-05
CPC Classification: H01J

Claim Text:
1. A lighting apparatus comprising: a magnetron configured to generate microwaves; a waveguide including: a resonator to which the microwaves are transmitted through the aperture; a bulb located in the resonator, the bulb encapsulating a light emitting material and being configured to emit light in response to the transmitted microwaves; and a reflective member located in the resonator to at least partially cover a portion of the aperture such that light emitted from the bulb towards the aperture is reflected away from the aperture, wherein the reflective member extends from the aperture into the resonator and defines a slot between the reflective member and the aperture, and the microwaves are transmitted into the resonator through the aperture and the slot, wherein the reflective member includes: wherein the slot is defined by the first member, the second member and the third member.