LIGHT SOURCE DEVICE AND PROJECTOR DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain a compact light source device using a semiconductor light emitting element such as an LED(light emitting diode) and having both of light quantity and luminance being sufficient for practical use. SOLUTION: A dichroic mirror 19 is constituted so that a light having a specified wavelength area out of the visible light is reflected and the light having the other wavelength area is transmitted. Then, luminous flux 21 and 22 emitted from the LED11 and the LED12 and provided with wavelength (λ1) and (λ2) interposing the selective boundary wavelength (λ0) of the mirror 19 as the peak wavelength are synthesized and outputted by the mirror 19. Since the luminous flux from the plural kinds of LEDs or LED groups can be synthesized without changing the cross section area of the emitted luminous flux, the compact light source device which can emit the high-luminance luminous flux is realized.