Patent ID: 8692871

Claim:
An autostereoscopic display apparatus comprising: a spatial light modulator having an array of individually addressable pixels of different colors arranged in rows and columns, each pixel comprising at least one aperture that contains liquid crystal and has an alignment feature arranged to provide radially symmetric alignment of the molecules of the liquid crystal; and a parallax element comprising an array of optical elements arranged over the spatial light modulator to direct light from the pixels into different viewing windows, the optical elements having geometric axes extending in parallel across the spatial light modulator transversely to said rows in which the pixels are arranged; wherein the apertures are shaped such that a notional line parallel to the geometric axes of the optical elements has a total length of intersection with the pixels of the same color that are adjacent along the notional line, which total length of intersection is the same for all positions of the notional line when the length of intersection is weighted across said alignment features by the intensity of light modulated by the alignment feature expressed as a fraction of the intensity of light modulated by the remainder of the pixel.