High dynamic range display devices
First Claim
Patent Images
1. A display comprising:
- a light source;
a first spatial light modulator located to modulate light from the light source;
a display screen comprising a second spatial light modulator; and
, an optical system configured to image light modulated by the first spatial light modulator onto a first face of the display screen, wherein, each of the first and second spatial light modulators comprises a plurality of controllable elements and for each controllable element of the first spatial light modulator, the second spatial light modulator has more than one corresponding controllable element.
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Abstract
A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.
278 Citations
63 Claims
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1. A display comprising:
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a light source;
a first spatial light modulator located to modulate light from the light source;
a display screen comprising a second spatial light modulator; and
,an optical system configured to image light modulated by the first spatial light modulator onto a first face of the display screen, wherein, each of the first and second spatial light modulators comprises a plurality of controllable elements and for each controllable element of the first spatial light modulator, the second spatial light modulator has more than one corresponding controllable element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A display comprising:
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a light source;
a first spatial light modulator located to modulate light from the light source, the first spatial light modulator comprising an array of controllable pixels; and
,a second spatial light modulator located to modulate light modulated by the first spatial light modulator, the second spatial light modulator comprising an array of controllable pixels;
wherein each pixel of one of the first and second spatial light modulators corresponds to a plurality of pixels of the other one of the first and second spatial light modulators, and wherein the light source and first spatial light modulator comprise the light source and first spatial light modulator of a digital projector and the digital projector comprises imaging optics which image the first spatial light modulator onto the second spatial light modulator. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A display comprising:
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first spatial modulation means for providing light spatially modulated at a first spatial resolution;
a display screen comprising second spatial modulation means for further spatially modulating the light at a second resolution different from the first resolution; and
means for controlling the first and second spatial modulation means to display an image defined by image data, wherein, each of the first and second spatial modulation means comprises a plurality of controllable elements and for each controllable element of one of the first and second spatial modulation means, the other one of the first and second spatial modulation means has more than one corresponding controllable elements. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A method for displaying an image having a high dynamic range, the method comprising:
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generating light;
spatially modulating the light according to image data in a first light modulating step; and
imaging the spatially modulated light onto a screen comprising a light modulator.
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Specification