N-modulation displays and related methods
First Claim
Patent Images
1. A display comprising:
- a light source comprising a two-dimensional array of light-emitting elements each having a controllable light output and the controller is configured to generate driving values for the light-emitting elements based at least in part on image data to display an image specified by the image data;
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, each of the plurality of controllable elements of the intermediate spatial light modulator having a controllable transmissivity, the intermediate spatial light modulator characterized by a maximum transmissivity of at least ½
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a controller configured;
to control the controllable elements of the spatial light modulator and the controllable elements of the intermediate spatial light modulator in to response the image data to display an image specified by the image data, andto estimate first light intensities at the controllable elements of the intermediate spatial light modulator based on the driving values for the light-emitting elements.
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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.
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Citations
41 Claims
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1. A display comprising:
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a light source comprising a two-dimensional array of light-emitting elements each having a controllable light output and the controller is configured to generate driving values for the light-emitting elements based at least in part on image data to display an image specified by the image data; 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, each of the plurality of controllable elements of the intermediate spatial light modulator having a controllable transmissivity, 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 to response the image data to display an image specified by the image data, and to estimate first light intensities at the controllable elements of the intermediate spatial light modulator based on the driving values for the light-emitting elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A display comprising:
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a light source comprising a two-dimensional array of light-emitting elements each having a controllable light output and the controller is configured to generate driving values for the light-emitting elements based at least in part on image data to display an image specified by the image data; 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, each of the plurality of controllable elements of the intermediate spatial light modulators having a controllable transmissivity, 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 to response the image data to display an image specified by the image data, and to update the driving values for the light-emitting elements at a first frequency and to update the driving values for the controllable elements of the intermediate spatial light modulator at a second frequency different from the first frequency. - View Dependent Claims (10, 11)
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12. A display comprising:
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a light source comprising a two-dimensional array of light-emitting elements each having a controllable light output and the controller is configured to generate driving values for the light-emitting elements based at least in part on the image data; 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, each of the plurality of controllable elements of the intermediate spatial light modulators having a controllable transmissivity, the intermediate spatial light modulator characterized by a maximum transmissivity of at least ½
;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; wherein the light-emitting elements each comprise a tile comprising one or more light-emitting devices and a waveguide, the waveguide configured to emit light from the light-emitting devices on a face thereof.
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13. A display comprising:
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a light source comprising no more than 400 light-emitters; 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, each of the plurality of controllable elements of the spatial light modulator having a controllable transmissivity, the intermediate spatial light modulator characterized by a maximum transmissivity of at least ½
;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; wherein the controllable elements of the intermediate spatial light modulator comprise dye-doped polymer-stabilized cholesteric texture (“
PSCT”
) elements.
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14. 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; and wherein the control system is configured to refresh the first spatial light modulator at a first rate and to refresh the intermediate spatial light modulator at a second rate different from the first rate. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. 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; and wherein the pixels of the intermediate spatial light modulator are larger than the pixels of the first spatial light modulator. - View Dependent Claims (26)
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27. 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; and wherein the intermediate spatial light modulator and first spatial light modulator are supported by a common substrate. - View Dependent Claims (28)
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29. 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; and an optical diffuser element; 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; wherein the intermediate spatial light modulator is spaced apart from the first spatial light modulator by a first gap; wherein the intermediate spatial light modulator is spaced apart from the light source by a second gap; and wherein the optical diffuser element is located in at least one of the first and second gaps.
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30. 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; wherein the intermediate spatial light modulator is spaced apart from the first spatial light modulator by a first gap; wherein the intermediate spatial light modulator is spaced apart from the light source by a second gap; and an optical element in at least one of the first and second gaps wherein an optical characteristic of the optical element varies according to a spatial pattern that is registered relative to the pixels of the intermediate spatial light modulator. - View Dependent Claims (31)
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32. A display comprising:
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a light source comprising a plurality of light-emitting tiles, the plurality of tiles each comprising one or more light emitters having optical outputs coupled to a waveguide arranged to distribute light from the one or more light emitters over an area of the tile; 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 (33, 34, 35, 36)
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37. 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; and wherein the control system comprises a map, the map providing information regarding non-uniformities in light emission by the light source wherein the control system is configured to adjust driving values for the pixels of the intermediate spatial light modulator to compensate for the non-uniformities.
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38. A display comprising:
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a light source comprising a plurality of individually-controllable light emitters and the control system is configured to generate light source driving signals for the individually-controllable light emitters based at least in part on the image data; 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 (39, 40, 41)
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Specification