Directional display for a directional display having an angular intensity profile compensator

摘要: A directional display comprises a arrangement such as spatial light modulator and rear parallax barrier illuminated by suitable backlight. The the cooperate to produce Fresnel diffraction which results in spatially non-uniform brightness across viewing windows of display. Also, where has pixels non-constant vertical aperture, further variations intensity profile at occurs. In order compensate for this, mask is provided, instance between cooperates with an pattern having are inverse produced modulator. superimposed substantially cancel each other out so result have uniform intensities.