Aerial imaging device and method

The invention relates to a laser aerial imaging device and a method. The device includes a an irradiation device which is composed of a plurality of direct light sources, and the light columns irradiated by the plurality of direct light sources can meet at a certain point in the air to form a light column intersection focused spot, and the direct light source is a laser. The invention has the advantages of simple structure, low cost, no need for medium to image in the high air, and is suitable for displaying advertisements and the like in the night sky of the city. 本发明涉及种激光空中成像装置及方法。包括复数个直射光源组成的照射装置，所述的复数个直射光源照射的光柱可以在空中某个点交汇形成光柱交汇聚焦光点。所述的直射光源为激光器。本发明结构简单、成本低廉、可以无需介质在高空中成像，适合在城市的夜空中显示广告等用途。