The present invention provides an image pickup apparatus with a thin-shaped body. The image pickup apparatus includes: emitter means 8 for emitting an imaging light; light transmission means for leading the imaging light that comes from one face directly to another face, and leading the imaging light that comes from a certain position of the another face to a different position of the one face; and image pickup means for picking up an image equivalent to the imaging light from the light transmission means. Therefore, the emitter means can be placed substantially on the same plane as the image pickup means under the one face M1 of the light transmission means. Thus, the body of the image pickup apparatus can be thinner.