LAMP AND LAMP PACKAGE MADE OF FUNCTIONALLY GRADIENT MATERIAL

摘要

A lamp seal (10, 30) of functionally gradient material, that comprises seal material that is functionally gradient material and a lead bar (13, 32) that is fixed to the seal piece (11, 31), which seal piece comprises an inorganic layer with insulative properties and a number of mixed layers that are each mixtures of conductive inorganic materials and insulative inorganic materials, such that the proportion of conductive inorganic materials increases gradually in the direction of layering, there being a hole formed to extend in the direction of layering such that the lead bar can be fixed into the seal material with a sleeve-shaped metallic part made of a high-melting-point metal separating the outer periphery of the lead bar from the seal material. A lamp made with an air-tight seal consisting of that lamp seal of functionally gradient material.