Iwasaki Electric Co., Ltd.

Junpei Nishimura

Toshio Yoshizawa

Yoshiaki Kuroda

Provided is an electrode for a high pressure discharge lamp, which prevents spring-back of an electrode coil, and which has high productivity and high accuracy in positioning the coil. The electrode for the high pressure discharge lamp includes: an electrode core bar (); and a coil () mounted on the electrode core bar, and is configured as follows. The electrode core bar () includes: a small-diameter section () on a power supply side; and a large-diameter section () on a leading end side. The large-diameter section () has: a large-diameter portion () on the small-diameter section side; a small-diameter portion () having a smaller outer diameter than the large-diameter portion, the small-diameter portion forming a step (s) with the large-diameter portion therebetween; and a leading end portion (). The coil () covers a portion between the step (s) and the leading end portion.

Electrode for high pressure discharge lamp, high pressure discharge lamp, and method for manufacturing electrode for high pressure discharge lamptechnical field

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Gyoda, Japan

Junpei Nishimura