| 摘要 |
A high performance fluorescent lamp includes an air-tight glass envelop having sealed ends and a light cavity filled with inert gas and coated with a phosphor powder at an inner wall of the glass envelop. Two filaments are sealed at the sealed ends of the glass envelop respectively. A channel is formed at one of the sealed ends of the glass envelop at a location communicating with the light cavity of the glass envelop. An amalgam is retained within the channel at a position forming a preset distance between the respective filament and the amalgam. Therefore, the fluorescent lamp can be operated under different ambient temperature or different wattage of the fluorescent lamp with the similar type of amalgam by controlling a distance between the amalgam and the respective filament. |
