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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorShozo Oshio
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A light-transmitting (fluorescent) sintered body formed of specific substances different from the prior art materials, solving problems that the performance or efficiency, uses and manufacturing methods are limited which have not been solved with the prior art light-transmitting sintered body and which provides a light-emitting tube and an electric discharge lamp using a light-transmitting (fluorescent) sintered body formed of the specific substance. Provided are a light-transmitting sintered body mainly formed of a compound having a Mugnetplumbite structure or a β-alumina structure except for aluminum oxide, a light-transmitting sintered body mainly formed of a compound containing rare earth elements with an ionic valence of two, aluminum element and oxygen element as main components and an light-transmitting sintered body formed of mainly of a compound containing elements with an ionic valence of two except for rare earth elements, rare earth elements and oxygen element as main components.
A light-transmitting ceramic compact comprising a compound as main component, said compound having a magnetoplumbite structure.
A light-transmitting ceramic compact comprising a compound as main component except for aluminum oxide, said compound having a β-alumina structure.
A light-transmitting sintered body comprising a compound as main component, said compound containing rare earth elements with an ionic valence of two, aluminum element and oxygen element as main components.
Dependencies are inferred from the claim text.