| 摘要 |
A directional display comprises first and second display means (45, 46, 47, 48) and an optical combiner (49) for combining light from the first and second display means (45, 46, 47, 48). Each of the display means (45, 46, 47, 48) comprises a spatial light modulator (45, 47), an extended light source, an array of apertures (62, 69) whose pitch is greater than twice the aperture width, and a parallax screen (46, 48, 64) for controlling the direction of illumination of the modulator (44, 47) by light from the apertures (62, 69). <IMAGE> |
