公开(公告)号：US3911308A

公开(公告)日：1975-10-07

申请号：US44053674

申请日：1974-02-07

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： AKUTSU HIDEZO ,  YAMAZAKI HARUO ,  IWAMA KATSUAKI ,  SAITO NAOKI

IPC: H01J61/18 ,  H01J61/30

CPC classification number: H01J61/18

Abstract: A high-pressure metal-vapor discharge lamp is formed by enclosing scandium-halide, preferably scandium-iodide (ScI3) in the amount of 1.80 X 10 7 to 9.27 X 10 6 gram mol/cc of confined gas, and at least 3.1 times said halide quantity in atomic ratio of free (metal) scandium, together with some mercury as a buffer gas, inside a translucent alumina tube. Such discharge lamp can maintain a luminous efficiency of over 70 lumen/Watt and a general color-rendering index of over 70 for a period in excess of 6,000 hours, and thus, it is very useful as a general lighting source.

Abstract translation: 高压金属蒸汽放电灯是通过以1.80×10 -7至9.27×10 -6克/立方厘米的封闭气体的量包围卤化钪，优选碘化钪（ScI3）形成的 ，并且在透明氧化铝管内部，游离（金属）钪原子比以及一些汞作为缓冲气体的至少3.1倍的卤化物量。 这种放电灯可以保持超过70流明/瓦的发光效率和超过70小时的一般显色指数超过6000小时，因此，作为一般照明源是非常有用的。