Up-Converting Phosphor Technology (UPT) is based on lanthanide-containing, submicrometer-sized, ceramic particles that can absorb infrared light and emit visible light.

• 上转磷光技术（UPT）系基于含有镧系元素的、次微米体积的陶瓷颗粒能吸收红外光而发射出可见光的特点的分析技术。