A new photographic method that enables to catch a whole shape of a fuel spray with quite fine droplet sizes is developed. A self-made camera that is composed of a large sized film and a self-made projector was used for this purpose. The self-made projector has an objective lens with high magnification and a long working distance. Using the large sized film, it is possible to photograph objects with both a desirable wide visual field and a fairly good spatial resolution at the same time. In the experiment, laser transmitted light has been developed to consider adequacy of this photographic system for a non-evaporative spray. The light source was the second harmonic of Nd:YAG laser. As a result, the fine image of the spray was taken by this system. There is the possibility of measuring the droplets diameter in the whole spray by using photographic system.
