Patent ID: 7876034

Claim:
A field emission lamp, comprising: a tubular-shaped housing having an inner surface, the inner surface comprising a reflecting area and an emitting area, the reflecting area being opposite to the emitting area; a first electrode centrally and longitudinally accommodated in the housing, the first electrode being fastened to one end of the tubular-shaped housing, through which the first electrode is electrically connected to an external power supply; an electron emitting layer disposed on the first electrode; an opaque reflective layer acting as a second electrode spaced apart from the first electrode, the reflective layer being disposed only on the reflecting area of the housing, the reflective layer being electrically connected to the external power supply; and a fluorescent layer disposed on the reflective layer such that the reflective layer is sandwiched between the fluorescent layer and the inner surface of the housing; wherein light irradiating the conductive reflective layer is only emitted out of the field emission lamp and is emitted via the emitting area.