A white balance is adjusted with high precision, irrespective of the contents of an image formed by an image forming element. A projector device includes: a plurality of light sources each of which emits a different type of color light; a plurality of image forming elements each of which, upon irradiation with the different type of color light, forms a respective image corresponding to the different type of color; a plurality of sensors (101R, 101G, 101B) each of which detects a respective luminance of the different type of color light with which one corresponding image forming element, from among a plurality of image forming elements, is irradiated; and a controller (controller 302) that adjusts a white balance by correcting respective detection values detected by the plurality of sensors in accordance with the luminances of the images formed by the image forming elements corresponding to the colors of light detected by the sensors, and by controlling outputs from the plurality of light sources in accordance with the corrected values.