The light source apparatus

This light source device for use of one aphototropism module use, wherein, the light source device is set by one side of the light conductive board; the light source device comprises mask film and light source; the mask film has one open end, first side wall and second side wall; the first and second side walls are in relative two sides of open end with reflection part inside; the light source is for light diode inside mask film relative to light reflection part; the mask film comprises light reflection slice down light source; in best example, the first side wall is set relative to open end section with light reflection slice; the light source device also comprises circuit board down light reflection.