| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device which can improve light use efficiency with a simple configuration.SOLUTION: One embodiment of a light source device according to the present invention has a phosphor layer having a side face, a bottom face, and a top face facing the bottom face, a reflection member facing a side face of the phosphor layer, a substrate provided on the bottom face side of the phosphor layer, and an adhesive that has a light reflection property and bonds the phosphor layer and the substrate together. The reflection member and the adhesive are formed as an integral structure. |
