N-MODULATION DISPLAYS AND RELATED METHODS
First Claim
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1. A display comprising:
- a light source;
a spatial light modulator comprising a plurality of controllable elements located to modulate light from the light source, each of the plurality of controllable elements having a controllable transmissivity;
an intermediate spatial light modulator comprising a plurality of controllable elements located in a light path between the light source and the spatial light modulator, the intermediate spatial light modulator characterized by a maximum transmissivity of at least ½
; and
a controller configured to control the controllable elements of the spatial light modulator and the controllable elements of the intermediate spatial light modulator in response to image data to display an image specified by the image data.
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Abstract
A display has a light source, a spatial light modulator and an intermediate spatial light modulator. The display may be a front projection display or a rear-projection display. The spatial light modulator is illuminated with light from a light source. The intermediate spatial light modulator is located in a light path between the light source and the spatial light modulator. The light source may comprise an array of controllable light-emitters. The display may provide a high dynamic range.
135 Citations
44 Claims
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1. A display comprising:
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a light source; a spatial light modulator comprising a plurality of controllable elements located to modulate light from the light source, each of the plurality of controllable elements having a controllable transmissivity; an intermediate spatial light modulator comprising a plurality of controllable elements located in a light path between the light source and the spatial light modulator, the intermediate spatial light modulator characterized by a maximum transmissivity of at least ½
; anda controller configured to control the controllable elements of the spatial light modulator and the controllable elements of the intermediate spatial light modulator in response to image data to display an image specified by the image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A display comprising:
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a light source; a first spatial light modulator; a control system configured to receive image data defining an image to be displayed on the display and to control pixels of the first spatial light modulator in response to the image data; an intermediate spatial light modulator located in an optical path between the light source and the first spatial light modulator; wherein the control system is configured to control pixels of the intermediate spatial light modulator at least in part in response to the image data to provide or refine an approximation of the desired image on the first spatial light modulator. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A display according to claim 44 wherein the control system is configured to determine from the image data a desired amount of light to be emitted from each pixel of the intermediate spatial light modulator and to generate driving signals for the intermediate spatial light modulator based on the desired amounts of light.
Specification