Autostereoscopic display device

An autostereoscopic display device comprising:

• a display arrangement comprising an array of spaced pixels;
• a light guiding arrangement comprising an array of light guide columns, with one light guide column over each display pixel or a group of pixels, wherein the light guide columns comprise a side wall which tapers outwardly to define a funnel shape with the pixel or pixels at the smaller base of the funnel;
• and
• an autostereoscopic lens arrangement comprising a plurality of lenticular lenses over the light guiding arrangement, the lenticular lenses extending in a pixel column direction or inclined at an acute angle to the pixel column direction, wherein each lens covers a plurality of pixel column widths,
• wherein light guide columns limit the angular spread of light differently at different sides of the underlying pixel, because either:
• the side wall has a first slope on one side in the width direction of the lenticular lens and a different second slope on the opposite side;
• or
• the side wall has the same slope on both sides in the width direction of the lenticular lens, and the base of the funnel has a width which is greater than the pixel width, and is non-symmetrically positioned with respect to the pixel.