Lighting apparatus
AssigneeLG Electronics Inc.
InventorsJunsung Kim, Hyunjung Kim, Donghun Kim
Life of this patent
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Abstract
A lighting apparatus is provided that includes a magnetron configured to generate microwaves having a predetermined frequency, a waveguide including a first wave guide space configured to introduce and guide the microwaves and a second wave guide space expanded from the first wave guide space, a resonator to which the microwaves are transmitted from the waveguide and 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. The second wave guide space is located in a transmission path of the microwaves transmitted from the magnetron to the resonator.
Claims14
A lighting apparatus comprising:
- a magnetron configured to generate microwaves having a predetermined frequency;
- a waveguide including a first wave guide space configured to introduce and guide the microwaves and a second wave guide space expanded from the first wave guide space;
- a resonator to which the microwaves are transmitted from the waveguide;
- and
- 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,
- wherein the second wave guide space is located in a transmission path of the microwaves transmitted from the magnetron to the resonator, and
- wherein the second wave guide space is configured such that odd harmonics of the microwaves transmitted through the first wave guide space are reflected from the second wave guide space to the resonator and the even harmonics of the microwaves transmitted through the first wave guide space are introduced into and grounded in the second wave guide space.
A lighting apparatus comprising:
- a magnetron configured to generate microwaves having a predetermined frequency;
- a waveguide including a first wave guide space configured to introduce and guide the microwaves and a second wave guide space expanded from the first wave guide space;
- a resonator to which the microwaves are transmitted from the waveguide;
- and
- 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,
- wherein the second wave guide space is located in a transmission path of the microwaves transmitted from the magnetron to the resonator,
- wherein the first wave guide space extends in a longitudinal direction between the magnetron and the resonator,
- wherein the second wave guide space extends perpendicular to the longitudinal direction of the first wave guide space, and
- wherein the first and second wave guide spaces are arranged such that the microwaves to be transmitted to the resonator through the first wave guide space pass through the second wave guide space, and such that odd harmonics of the microwaves are transmitted to the resonator and even harmonics are removed by the second wave guide space.
Dependencies are inferred from the claim text.