An image display apparatus is provided that allows a user to check image content even in a place where there is no projection screen. A projector that is one mode of the image display apparatus includes a casing (11), a projection aperture (17) provided in the casing (11), and an internal projection mirror (30) and a built-in screen (31) that are provided in a casing (15). When the projector is being folded, laser light emitted from the projection aperture (17) is reflected by the internal projection mirror (30). The reflected light is projected onto the built-in screen (31), whereby an imageis displayed.