Spatial light modulator, directional display and directional light source
AssigneeSharp Kabushiki Kaisha
InventorsJonathan Harrold, Graham John Woodgate
Life of this patent
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Abstract
A spatial light modulator has a modulating region which is capable of operating in two modes in the first clear mode, the region is continuously and substantially uniformly transmissive. In a second or barrier mode, the region can be switched to form parallax barrier comprising slits which are separated by continuous opaque regions. Such A modulator may be used in association with an image liquid crystal display to provide an autostereoscopic 3D display having a 3D mode which may track movement of an observer and a 2D mode in which full resolution of the LCD is used.
Claims32
A spatial light modulator, comprising a modulator region which is switchable between a clear mode, in which the region is of substantially uniform transmissivity, and a barrier mode, in which the region has a plurality of evenly spaced parallel transmissive strips extending in a first direction and separated by continuous substantially opaque sub-regions.
A spatial light modulator, comprising a modulator region which is switchable between a first mode in which the region is arranged to supply light of a substantially uniform first polarisation, and a second mode, in which the region is arranged to supply light of the first polarisation in a plurality of evenly spaced parallel strips and to supply light of a second polarisation, different from the first polarisation, in continuous sub-regions which separate the strips.
Dependencies are inferred from the claim text.