Directional display
AssigneeSharp Kabushiki Kaisha
InventorsRichard Robert Moseley, Graham John Woodgate, David Ezra
Life of this patent
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Abstract
An autostereoscopic 3D display includes a spatial light modulator, for instance of the liquid crystal display type. A backlight and a mask form a plurality of light sources which are imaged by a lenticular screen at first notional viewing windows. A parallax barrier controls the visibility of pixels of the spatial light modulator to form second notional viewing windows. The display forms actual viewing windows whose lateral extent is equal to the product of the lateral extents of the first and second viewing windows and is less than each of these lateral extents.
Claims16
A directional display comprising:
- a spatial light modulator;
- a directional illumination system for directing light through the modulator;
- and
- a parallax optic associated with the modulator, wherein:
- the illumination system directs light towards a plurality of first notional viewing windows, each of which has a first lateral extent;
- the parallax optic cooperates with the modulator so that non-directional illumination of the modulator would result in the formation of second notional viewing windows, each of which has a second lateral extent;
- and
- the modulator, the illumination system and the parallax optic cooperate to form actual viewing windows, each of which has a lateral extent which is equal to the product of the first and second lateral extents and is less than each of the first and second lateral extents.
Dependencies are inferred from the claim text.