A video projector comprising: a light source device (17, 31, 32); a video interface (11, 12) configured to receive a video signal; and a projector unit (16, 18, 19, 48, 49) configured to generate, from the output source light, a color photo image in accordance with the video signal and project the color photo image; wherein the light source device (17, 31, 32) comprises: a first light source (20A, 20B, 20C) configured to emit a first source light in a first wavelength range; a source light generator configured to generate, from the first light, a color-varying source light having time varying color; a second light source configured to emit a second source light in a second wavelength range that is different from the first wavelength range; and a light source controller (31, 32) configured to control driving timing for turning on and off each of the first light source (20A, 20B, 20C) and the second light source so as to cyclically select one of the color-varying source light and the second source light to be output as an output source light; characterized in that the first light source (20A, 20B, 20C) is configured to emit first laser light in a blue wavelength range as the first source light, wherein the source light generator comprises a color wheel (24, 241, 242, 243, 244) comprising: a fluorescent layer (24G, 24C, 24G1, 24G2, 24B2, 24C1, 24C2, 24G3, 24G3, 24C4) configured to emit light in a green wavelength range using the first laser light in the blue wavelength range as excitation light; and a diffusion layer (24B, 24B1) configured to diffuse and transmit the first laser light, wherein the fluorescent layer (24G, 24C, 24G1, 24G2, 24B2, 24C1, 24C2, 24G3, 24G3, 24C4) and the diffusion layer are arranged on the color wheel (24, 241, 242, 243, 244), wherein the second light source comprises a light emitting diode configured to emit the second source light in a red wavelength range. a light source device (17, 31, 32); a video interface (11, 12) configured to receive a video signal; and a projector unit (16, 18, 19, 48, 49) configured to generate, from the output source light, a color photo image in accordance with the video signal and project the color photo image; wherein the light source device (17, 31, 32) comprises: a first light source (20A, 20B, 20C) configured to emit a first source light in a first wavelength range; a source light generator configured to generate, from the first light, a color-varying source light having time varying color; a second light source configured to emit a second source light in a second wavelength range that is different from the first wavelength range; and a light source controller (31, 32) configured to control driving timing for turning on and off each of the first light source (20A, 20B, 20C) and the second light source so as to cyclically select one of the color-varying source light and the second source light to be output as an output source light; a first light source (20A, 20B, 20C) configured to emit a first source light in a first wavelength range; a source light generator configured to generate, from the first light, a color-varying source light having time varying color; a second light source configured to emit a second source light in a second wavelength range that is different from the first wavelength range; and a light source controller (31, 32) configured to control driving timing for turning on and off each of the first light source (20A, 20B, 20C) and the second light source so as to cyclically select one of the color-varying source light and the second source light to be output as an output source light; characterized in that the first light source (20A, 20B, 20C) is configured to emit first laser light in a blue wavelength range as the first source light, wherein the source light generator comprises a color wheel (24, 241, 242, 243, 244) comprising: a fluorescent layer (24G, 24C, 24G1, 24G2, 24B2, 24C1, 24C2, 24G3, 24G3, 24C4) configured to emit light in a green wavelength range using the first laser light in the blue wavelength range as excitation light; and a diffusion layer (24B, 24B1) configured to diffuse and transmit the first laser light, wherein the fluorescent layer (24G, 24C, 24G1, 24G2, 24B2, 24C1, 24C2, 24G3, 24G3, 24C4) and the diffusion layer are arranged on the color wheel (24, 241, 242, 243, 244), wherein the second light source comprises a light emitting diode configured to emit the second source light in a red wavelength range. a fluorescent layer (24G, 24C, 24G1, 24G2, 24B2, 24C1, 24C2, 24G3, 24G3, 24C4) configured to emit light in a green wavelength range using the first laser light in the blue wavelength range as excitation light; and a diffusion layer (24B, 24B1) configured to diffuse and transmit the first laser light, wherein the fluorescent layer (24G, 24C, 24G1, 24G2, 24B2, 24C1, 24C2, 24G3, 24G3, 24C4) and the diffusion layer are arranged on the color wheel (24, 241, 242, 243, 244), wherein the second light source comprises a light emitting diode configured to emit the second source light in a red wavelength range.