HIGH BRIGHTNESS PROJECTION SYSTEMS AND METHODS
First Claim
Patent Images
1. An image projection system comprising:
- a first projector operative to project first modulated light onto a screen, the first projector comprising a first spatial light modulator;
a second projector operative to project second modulated light onto the screen superposed with the first modulated light, the second projector comprising a light steering module;
a controller operative to process image data comprising pixel values defining target illumination levels for a target image to be displayed and to generate control signals for the first spatial light modulator and the light steering modulator wherein the processing comprises splitting light output between the first and second projectors in such a manner that the second modulated light includes a portion of the light for each of the pixels of the image and the first modulated light makes up a majority of the light for those pixels of the image for which the target illumination level is less than a first threshold level.
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Abstract
A hybrid projector architecture combines steered light with unsteered light. In some embodiments the steered light is narrowband light and the unsteered light is broadband light. Splitting between the steered and unsteered light may be determined based on luminance level. For example, the unsteered light may contribute a large proportion of the light for luminance levels up to a threshold. The steered light may contribute an increasing proportion of the light as luminance values rise above the threshold.
6 Citations
44 Claims
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1. An image projection system comprising:
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a first projector operative to project first modulated light onto a screen, the first projector comprising a first spatial light modulator; a second projector operative to project second modulated light onto the screen superposed with the first modulated light, the second projector comprising a light steering module; a controller operative to process image data comprising pixel values defining target illumination levels for a target image to be displayed and to generate control signals for the first spatial light modulator and the light steering modulator wherein the processing comprises splitting light output between the first and second projectors in such a manner that the second modulated light includes a portion of the light for each of the pixels of the image and the first modulated light makes up a majority of the light for those pixels of the image for which the target illumination level is less than a first threshold level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An image projection method, the method comprising:
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projecting first modulated light onto a screen using a first projector comprising a first spatial light modulator; projecting second modulated light onto the screen superposed with the first modulated light using a second projector comprising a light steering module; processing image data comprising pixel values defining target illumination levels for a target image to be displayed, the processing comprising splitting light output between the first and second projectors in such a manner that the second modulated light includes a portion of the light for each of the pixels of the image and the first modulated light makes up a majority of the light for those pixels of the image for which the target illumination level is less than a first threshold level; and generating control signals for the first spatial light modulator and the light steering modulator. - View Dependent Claims (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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44-45. -45. (canceled)
Specification