公开(公告)号：US06774545B1

公开(公告)日：2004-08-10

申请号：US09710675

申请日：2000-11-09

Applicant: Yutao Zhou ,  Thomas M. Golz ,  Tianji Zhao ,  Rajasingh Israel ,  Ashfaq Chowdhury

Inventor： Yutao Zhou ,  Thomas M. Golz ,  Tianji Zhao ,  Rajasingh Israel ,  Ashfaq Chowdhury

IPC: H01J516

CPC classification number: F21V7/04 ,  F21V7/22 ,  F21V29/15 ,  F21V29/505

Abstract: A parabolic reflector lamp is provided wherein lamp efficiency is improved by more substantially approximating the shape of a complete parabola at the inner reflective surface. In a first embodiment, the heat shield is placed at the mouth of the opening at the base of the lamp, thereby “filling in” the opening and substantially completing the parabolic shape of the reflector. In a second embodiment, the opening at the base of the lamp is narrowed to minimize its cross-sectional area and maximizing reflective surface area. In a third embodiment, the glass shell of the lamp is provided in a two-piece configuration, allowing the size of the hole through the base of the glass shell to be reduced. The openings required to accommodate electrodes (and an exhaust tube in sealed lamps) are located in a second cup-shaped piece attached via a flange to the main body of the glass shell.

Abstract translation: 提供了一种抛物面反射灯，其中灯效率通过更基本上近似于内反射表面处的完整抛物线的形状来改善。 在第一实施例中，隔热罩放置在灯底部开口的口处，从而“插入”开口并且基本上完成反射器的抛物线形状。 在第二实施例中，灯底部的开口变窄，以使其横截面积最小化并使反射表面积最大化。 在第三实施例中，灯的玻璃壳设置成两件式的构造，允许减小通过玻璃外壳的基座的孔的尺寸。 用于容纳电极（和密封灯中的排气管）所需的开口位于通过凸缘附接到玻璃壳主体的第二杯形件中。