A projector includes: an illumination device casting one detection light and another detection light onto an operation surface; a first image pickup device having a higher sensitivity to the one detection light than to the another detection light; a second image pickup device different from the position of the first image pickup device, the second image pickup device having a higher sensitivity to the another detection light than to the one detection light; and a detection device detecting that an object is in contact with the operation surface when a position of a pointing unit specified based on a first picked-up image picked up using the first image pickup device and a position of the pointing unit specified based on a second picked-up image picked up using the second image pickup device are within a predetermined range.