Characteristic:Good in photochromism, concentrate lightbeam,convenient use,1000-hours average life-time. 特点：光色好、光线集中、使用方便，平均寿命1000小时。
This paper reviews the lastest deveol pments and the scope of photochromism andphotonics. 本文概述了光致变色和光子器件领域的发展现状和机遇。
The photochromism was reviewed and several preparation methods of nanostructured WO3 thin films were compared. 摘要介绍了纳米WO3薄膜的光致变色机理，并对WO3薄膜的各种制备方法进行了分析比较。
