STEREOSCOPIC DISPLAY DEVICE

A stereoscopic display device according to the present disclosure includes: an image display element that displays a plurality of viewpoint images; an optical element that is opposed to the image display element, and outputs a plurality of light beams corresponding to the respective viewpoint images toward respective viewpoint positions; and an optical filter that is disposed between the optical element and the plurality of view point positions, and controls diffusion angles of the light beams outputted from the optical element in such a manner that the diffusion angles fall within a predetermined angular range decided on the basis of the plurality of viewpoint positions.