Display apparatus
First Claim
1. A display apparatus comprising:
- a spatial light modulator;
optical elements in series with the spatial light modulator and being switchable to provide;
a first parallax element being a parallax barrier capable of directing light output from the display apparatus to form a first plurality of viewing windows; and
a second parallax element capable of directing light output from the display apparatus to form a second plurality of viewing windows, wherein the first and second plurality of viewing windows are respectively arranged in two perpendicular orientations,the optical elements being switchable to operate in a first mode in which the first and second parallax elements have substantially no directional effect on the light output from the display apparatus, a second mode in which the first parallax element directs light output from the display apparatus into the first plurality of viewing windows and the second optical element has substantially no directional effect on the light output from the display apparatus and a third mode in which the first parallax element has substantially no directional effect on the light output from the display apparatus and the second optical element directs light output from the display apparatus into the second plurality of viewing windows.
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Accused Products
Abstract
A display apparatus comprises a spatial light modulator and optical elements in series therewith. The optical elements provide a first parallax element being a parallax barrier capable of directing light output from the display apparatus into a first plurality of viewing windows, and a second parallax element capable of directing light output from the display apparatus into a second plurality of viewing windows. In a first mode, the first and second parallax elements have substantially no directional effect on the light output from the display apparatus. In a second mode, the first parallax element directs light output from the display apparatus into the first plurality of viewing windows and the second optical element has substantially no directional effect. In a third mode, the second optical element directs light output from the display apparatus into the second plurality of viewing windows and the first parallax element has substantially no directional effect.
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Citations
29 Claims
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1. A display apparatus comprising:
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a spatial light modulator; optical elements in series with the spatial light modulator and being switchable to provide; a first parallax element being a parallax barrier capable of directing light output from the display apparatus to form a first plurality of viewing windows; and a second parallax element capable of directing light output from the display apparatus to form a second plurality of viewing windows, wherein the first and second plurality of viewing windows are respectively arranged in two perpendicular orientations, the optical elements being switchable to operate in a first mode in which the first and second parallax elements have substantially no directional effect on the light output from the display apparatus, a second mode in which the first parallax element directs light output from the display apparatus into the first plurality of viewing windows and the second optical element has substantially no directional effect on the light output from the display apparatus and a third mode in which the first parallax element has substantially no directional effect on the light output from the display apparatus and the second optical element directs light output from the display apparatus into the second plurality of viewing windows. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A display apparatus comprising:
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a spatial light modulator; a first parallax element being a parallax barrier capable of directing light output from the display apparatus to form a first plurality of viewing windows; and a second parallax element capable of directing light output from the display apparatus to form a second plurality of viewing windows, wherein the first and second plurality of viewing windows are respectively arranged in two perpendicular orientations, the first and second parallax elements both being arranged in series with the spatial light modulator and on the same side of the spatial light modulator with no polariser between the first and second parallax elements, the first and second parallax elements being switchable to operate in a first mode in which the first and second parallax elements have substantially no directional effect on the light output from the display apparatus, a second mode in which the first parallax element directs light output from the display apparatus into the first plurality of viewing windows and the second optical element has substantially no directional effect on the light output from the display apparatus and a third mode in which the first parallax element has substantially no directional effect on the light output from the display apparatus and the second optical element directs light output from the display apparatus into the second plurality of viewing windows. - View Dependent Claims (22)
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23. A display apparatus comprising a spatial light modulator having arranged in series therewith:
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an input polariser; a birefringent lens comprising a layer of isotropic material and a layer of birefringent material having a lens surface therebetween shaped to direct light output from the display apparatus into a second plurality of windows; electrodes for applying an electric field across the layer of birefringent material and patterned to provide alternating, independently addressable slit regions and barrier regions arranged so that light passing through the slit regions is directed into a first plurality of windows perpendicular to the second plurality of viewing windows; a switchable polarisation rotation element for selectively rotating the polarisation of light passing therethrough; and an analyser polariser, the display apparatus being switchable by control of the voltage applied to the electrodes and of the switchable polarisation rotation element to operate in a first mode in which the birefringent lens has substantially no directional effect on the light output from the display apparatus, a second mode in which light is output from the apparatus through the slit regions but not the barrier regions into the first plurality of viewing windows and the lens surface has substantially no directional effect on the light output from the display apparatus and a third mode in which the lens surface directs light output from the display apparatus into the second plurality of viewing windows across the entirety of the slit regions and barrier regions. - View Dependent Claims (24, 25, 26)
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27. A display apparatus comprising:
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a spatial light modulator is capable of modulating light transmitted therethrough; a first parallax element being a parallax barrier capable of directing light output from the display apparatus into a first plurality of viewing windows and being arranged on the input side of the spatial light modulator; and a second parallax element capable of directing light output from the display apparatus into a second plurality of viewing windows pendicular to the first plurality of viewing windows and being arranged on the output side of the spatial light modulator, the first and second parallax elements being switchable to operate in a first mode in which the first and second parallax elements have substantially no directional effect on the light output from the display apparatus, a second mode in which the first parallax element directs light output from the display apparatus into the first plurality of viewing windows and the second optical element has substantially no directional effect on the light output from the display apparatus and a third mode in which the first parallax element has substantially no directional effect on the light output from the display apparatus and the second optical element directs light output from the display apparatus into the second plurality of viewing windows. - View Dependent Claims (28, 29)
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Specification