Due to its dome shape, the "Dome Wide Filter" widens the angle of illumination up to approximately 105° above the "Wide Filter" LF-W" and allows you to see the light directly from the irradiation angle of approximately 180°, which greatly exceeds the angle of illumination. It can also be used for marine situations where transparency is extremely poor or transparency, or when night diving, and also as a way to transmit your position to your surroundings.