Color projection display system
First Claim
Patent Images
1. A system comprising:
- first and second liquid crystal on silicon (LCoS) display panels each comprising a micro dichroic filter array, each micro dichroic filter array including multiple elements configured to transmit a portion of an incident light beam, the transmitted portion being a filtered portion where the filtered portion from different elements are different colors, and each element being further configured to reflect a portion of the incident light beam, the reflected portion being an unfiltered portion of the light beam, so that the polarization of the unfiltered portion is not changed when leaving the display panel,wherein each display panel is configured to reflect and modulate filtered portions from the corresponding micro dichroic filter array within the display panel so that the polarization of at least some of the filtered portions is changed when leaving the display panel; and
a polarizing beam splitter assembly configured so that during operation the polarizing beam splitter assembly combines the filtered portions of a first light beam reflected by the first display panel with filtered portions of a second light beam reflected by the second display panel to form an image beam, and the combined filtered portions of the first and second light beams have mutually orthogonal polarization states.
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Abstract
The present invention is a 3D/2D convertible color projection display system with two color LCoS panels, which enable the system to project two orthogonal polarized images. When the two images correspond to different view angles, each eye of an observer wearing a pair of polaroid glasses can only see one of the images, creating a 3D stereoscopic effect. When the two images correspond to the same view angle, then the observer, without any special glasses, can watch regular 2D images with multiple primary colors.
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Citations
40 Claims
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1. A system comprising:
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first and second liquid crystal on silicon (LCoS) display panels each comprising a micro dichroic filter array, each micro dichroic filter array including multiple elements configured to transmit a portion of an incident light beam, the transmitted portion being a filtered portion where the filtered portion from different elements are different colors, and each element being further configured to reflect a portion of the incident light beam, the reflected portion being an unfiltered portion of the light beam, so that the polarization of the unfiltered portion is not changed when leaving the display panel, wherein each display panel is configured to reflect and modulate filtered portions from the corresponding micro dichroic filter array within the display panel so that the polarization of at least some of the filtered portions is changed when leaving the display panel; and a polarizing beam splitter assembly configured so that during operation the polarizing beam splitter assembly combines the filtered portions of a first light beam reflected by the first display panel with filtered portions of a second light beam reflected by the second display panel to form an image beam, and the combined filtered portions of the first and second light beams have mutually orthogonal polarization states. - 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)
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26. A system, comprising:
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a polarizing beam splitter assembly including a plurality of polarizing beam splitter coatings arranged in orthogonal planes; and first and second display panels positioned relative to the polarizing beam splitter assembly so that during operation the polarizing beam splitter assembly combines filtered light reflected from the first and second display panels to form an image beam, wherein the first and second display panels each comprise a micro dichroic filter array, each micro dichroic filter array comprising multiple elements each configured to transmit a corresponding portion of an incident light beam, the transmitted portion being a filtered portion where the filtered portion from different elements are different colors, and each element being further configured to reflect a portion of the incident light beam, the reflected portion being an unfiltered portion, so that the polarization of the unfiltered portion is not changed when leaving the display panel, wherein each display panel is configured to reflect and modulate the filtered portion from the corresponding micro dichroic filter array within the display panel so that the polarization of at least some of the filtered portions are changed when leaving the display panel. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A method comprising:
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directing a first light beam to reflect from a first color liquid crystal on silicon (LCoS) display panel and a second light beam to reflect from a second color LCoS display panel, the first and second color LCoS display panels each comprising a micro dichroic filter array, each micro dichroic filter array comprising multiple elements each configured to transmit a corresponding portion of an incident light beam, the transmitted portion being a filtered portion where the filtered portion from different elements are different colors, and each filter being further configured to reflect a portion of the incident light beam, the reflected portion being an unfiltered portion, so that the polarization of the unfiltered portion is not changed when leaving the display panel, wherein each display panel is configured to reflect and modulate the filtered portion from the corresponding micro dichroic filter array within the display panel so that the polarization of at least some of the filtered portions are changed when leaving the display panel; and combining the filtered portions of the first light beam reflected by the first display panel with the filtered portions of the second light beam reflected by the second display panel to form an image beam, wherein the combined filtered portions of the first and second light beams have mutually orthogonal polarization states. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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Specification