Patent ID: 6445138
Filing Date: 2002-09-03
Classification: H01J,H05B

Abstract:
A microwave powered lamp comprising:a housing containing a water cooled magnetron, the water cooled magnetron providing microwaves to a microwave excited bulb, the microwave excited bulb providing light from the housing; an air source, coupled to the housing, which blows air to the water cooled magnetron and the bulb with the air providing cooling to the bulb to control operation temperature thereof; a heat exchanger disposed in the housing, with the air blown from the air source contacting the heat exchanger, the heat exchanger having a portion contacted by water heated by operation of the magnetron with the air blown from the air source cooling the heated water; and a water circulation circuit, coupled to the water cooled magnetron and the portion of the heat exchanger, which circulates heated water from the water cooled magnetron to the portion of the heat exchanger and cooled water from the portion of the heat exchanger back to the magnetron.