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    High-pressure metal-vapor discharge lamp
    3.
    发明授权
    High-pressure metal-vapor discharge lamp 失效
    高压金属蒸汽放电灯

    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。

    HIGH PRESSURE SODIUM VAPOR DISCHARGE LAMP
    6.
    发明专利
    HIGH PRESSURE SODIUM VAPOR DISCHARGE LAMP 未知

    公开(公告)号：CA1064566A

    公开(公告)日：1979-10-16

    申请号：CA274268

    申请日：1977-03-18

    Applicant: MATSUSHITA ELECTRONICS CORP

    Inventor： WATARAI YOSHIAKI ,  YAMAZAKI HARUO ,  SAITO NAOKI ,  YAMAGUCHI MASAYUKI ,  OKAMOTO TAKIO ,  AKUTSU HIDEZO

    IPC: H01J61/38 ,  H01J61/40

    Abstract: HIGH PRESSURE SODIUM VAPOR DISCHARGE LAMP The specification discloses a high pressure sodium vapor discharge lamp comprising an alumina tube envelope containing sodium, an inert starting gas, a mercury or cadmium buffer gas source and a pair of discharge electrodes. The inner diameter d in mm of the tubular envelope and the average potential gradient E in volt/cm has the following relationship: E ? 37.7-2.05d. The lamp further comprises a radiation suppressing means at least partially surrounding the tube envelope for selectively, and at least partially, absorbing red radiation having wavelengths longer than 620 nm. The lamp achieves a higher color temperature and a higher general color rendering index than conventional lamps of this type without an undesirable increase in the tube voltage, and is suitable for highly efficient indoor illumination.

    High pressure scandium halide discharge lamp - has transparent aluminium oxide tube with phosphors, starting and buffer gases
    7.
    发明专利
    High pressure scandium halide discharge lamp - has transparent aluminium oxide tube with phosphors, starting and buffer gases 未知

    公开(公告)号：DE2408112A1

    公开(公告)日：1975-08-21

    申请号：DE2408112

    申请日：1974-02-20

    Applicant: MATSUSHITA ELECTRONICS CORP

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

    IPC: H01J61/18

    Abstract: The high pressure metal vapour discharge lamp contains a transparent aluminium oxide tubular burner containing a buffer gas, respective phosphors, and a starting rare gas. The gas mixture contains 1.80 x 10-7 to 9.27 x 10-6 g. mol. of a scandium halide, such as scandium iodide, scandium bromide or scandium chloride per each cubic cm. of the tubular burner inner space, to which is added at least 3.1 times quantity of metallic scandium, calculated as atomic ratio of free scandium to that bound in the halide. The metallic scandium forms the phosphor. Various other scandium halide and metallic scandium ratios may be used. Preferably the lamp containts an additional quantity of a halide of an alkali metal, of a metal from the titanium group a metal of the niobium group and/or the rare earths.

    HIGH PRESSURE METAL VAPOUR DISCHARGE TUBE
    9.
    发明专利
    HIGH PRESSURE METAL VAPOUR DISCHARGE TUBE 未知

    公开(公告)号：CA962318A

    公开(公告)日：1975-02-04

    申请号：CA165439

    申请日：1973-03-07

    Applicant: MATSUSHITA ELECTRONICS CORP

    Inventor： YAMAZAKI HARUO ,  AKUTSU HIDEZO ,  OKAMOTO TAKIO

    IPC: H01J61/36

    Abstract: A high-pressure metal-vapor discharge tube having improved characteristics is disclosed. The tube has an alumina hollow discharge enclosure tube member, the ends of which are sealed by alumina end disks. The end disks have central apertures through which electrode lead in wires or rods extend into the discharge enclosure. The lead in wires or rods are made of a material which is resistant to the corrosive effects of metal halide. The hollow discharge enclosure tube member has walls which are thicker at the two ends than in the intermediate region of the tube member. Preferably, the ends are more than twice as thick as the central walls. This results in a stronger seal between the alumina end disks and the tube member, thus not only avoiding the risk of breakage when sealing the tube member and manufacturing defects such as a defective seal, but also ensuring longer life of the lamp.

    HIGH PRESSURE METAL-VAPOUR DISCHARGE TUBE
    10.
    发明专利
    HIGH PRESSURE METAL-VAPOUR DISCHARGE TUBE 未知

    公开(公告)号：GB1280735A

    公开(公告)日：1972-07-05

    申请号：GB4087070

    申请日：1970-08-25

    Applicant: MATSUSHITA ELECTRONICS CORP

    Inventor： MIZUNO HIDEO ,  KIMURA SADAO ,  AKUTSU HIDEZO ,  YAMAZAKI HARUO ,  OKAMOTO TAKIO ,  WATARAI YOSHIAKI ,  BABA SHOICHI

    IPC: H01J61/04

    Abstract: 1280735 Metal vapour lamps MATSUSHITA ELECTRONICS CORP 25 Aug 1970 [29 Aug 1969] 40870/70 Heading H1D A high pressure metal vapour discharge lamp comprises a sealed transparent polycrystalline high density ceramic tubular enclosure 1 (e.g. alumina, beryllia, magnesia) containing a rare gas (e.g. Xe), Hg, and one or more alkali metals (e.g. Na) to form a saturated vapour pressure, and metal layers 5 in contact with the outer wall at each end to conduct heat from the hotter to the cooler parts. The layer 5 is preferably a metal of high m.p., high thermal conductivity and low vapour pressure and may be Ti, Y, Rh, Ru, Mo, Nb, Ta, W, Pt, Ir, Re or Os and may be foil such as 0À02 mm. thick Ta, formed by chemical or vapour deposition, or by sputtering. Ceramic end discs 2 may be replaced by metal end caps. The metal layers preferably do not extend beyond 5 mm. from the front tip of electrodes 6. In sputtering, the central part of the tube is covered with an insulator such as porcelain supporting a W anode, and the end parts are wound with metal foil. For chemical deposition, the end parts may be heated to 600‹ to 700‹ C. and contacted with a mixed gas of molybdenum pentachloride and hydrogen. Ceramic cement seals the enclosure, discs 2 and leadin metal tubes 3. Discs 2 are preferably the same material as the enclosure, but may be other ceramics with high thermal expansion coefficient approximating that high m.p. tubes 3 of Nb, Ta or Mo for example. Alkali vapour pressures may be 300 to 1000 torr and the coolest and highest tube temperatures may be 650‹ to 800‹ C. and 1200‹ C. respectively (e.g. Fig. 2, not shown).

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