There is provided a projection device including a projecting unit that projects an image onto a screen, an acquiring unit that acquires image data of the image to be projected onto the screen, a generating unit that generates first pixel data representing pixels of first spot beams to be projected onto the screen without overlapping with each other among a plurality of spot beams to be projected at different timings based on the image data, and a driving control unit that controls driving of the projecting unit based on the first pixel data in a manner that the first spot beams are projected onto the screen as pixels of the image data.