| 摘要 |
PROBLEM TO BE SOLVED: To provide a projection type display device that uses a light source that is excited by a solid light source and emits fluorescent light in order to enhance the luminance and prolong the life of the light source.SOLUTION: A light source device 40 and a projection type display device include a semiconductor laser 20, a dichroic mirror 29, a phosphor layer 31, a reflector plate 32, a 1/4 retardation plate 36, a diffuser plate 38, and a reflector plate 39 as a second reflector element. |
