A projector to form image light by modulating light emitted from a light source according to image information and enlarges and projects the image light includes a projector main body with a light passing opening regulated by a blocking member, a reproduction device, and a control unit to control operation of projector components. The reproduction device reproduces information recorded on inserted recording medium. The control unit includes a startup information receiving section, a closed condition checking section, a medium judging section, and a light source controlling section. The light source controlling section executes immediate light turn-on control when the light passing opening is in the opened condition and image/video media exists.