Our research is canine guidance using spotlights. Using dogs' habit following light, a spotlight guidance suit can remotely guide dogs by switching spotlight irradiation. The problem was that the spotlight devices were long and could get caught in the dog's surrounding environment. In this study, we considered lenses with different focal lengths and shapes using an optical simulator to shorten the length of the spotlight devices. By using a short focal length and a plano-convex lens, we succeeded in shortening the spotlight device. In addition, we verified to guide canine outdoors using a spotlight guidance suit. The difficulty of outdoor guidance is that people and animals walk around the field, and their movements and sounds attract the dog's attention. Also, we examined whether the dog could follow the spotlights even in a bright outdoor environment. As a result, we succeeded in the outdoor navigation.
