| abstract |
(57) [Problem] To provide a phosphor capable of suppressing a decrease in luminance of a lamp during operation, particularly when used as a fluorescent film of a fluorescent lamp, and a long-life fluorescent lamp having a high luminous flux maintenance rate. The purpose is to provide. A phosphor has been subjected to a surface treatment for attaching a carbonate compound to the surface of phosphor particles, and the phosphor forms a phosphor film of a fluorescent lamp. |