Metal halide lamp including sealed metal foil
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United States of America Patent
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Jun 19, 2012
Grant Date -
Oct 14, 2010
app pub date -
Jan 26, 2007
filing date -
Jan 26, 2006
priority date (Note) -
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Abstract
A metal halide lamp (MHL) includes: a light-transmitting hermetic vessel made of quartz glass, including: a surrounding portion having a discharge space formed therein; and at least one sealing portion joined to the surrounding portion; electrodes sealed within the discharge space of the light-transmitting hermetic vessel; a discharge medium filled within the discharge space of the light-transmitting hermetic vessel; and at least one sealed metal foil connected to proximal ends of the electrodes and hermetically embedded within the sealing portion, the sealed metal foil being formed with height-differentiating portions comprised of laser traces on at least one of surfaces of the metal foil.
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