About BANDO KANJI
About 日亜化学工業
About light emitting diode
About light source
About white light
About energy conversion efficiency
About emission spectrum
About phosphor
About LED illumination
About luminous efficacy
About white light emitting diode
About light emitting diode
About 白色LED
About Light sources,lighting apparatus
About Light emitting devices
About 世界
About 固体発光
About LED照明
About 発展
About 概要