Image display system having direct and projection viewing modes
First Claim
1. An image display system having direct and projection viewing modes, comprising;
- a light producing structure for producing light during said direct and projection viewing modes;
an electro-optical light diffusing panel having a light scattering state in which light being transmitted therethrough is scattered in a diffusive manner, and a light transmission state in which light being transmitted therethrough is transmitted without substantial scattering;
a spatial light intensity modulation structure for spatially modulating the intensity of light produced from said light producing means during said direct viewing mode and during said projection viewing mode; and
a state selection structure for selecting the light scattering state of said electro-optical light-diffusing panel during said direct viewing mode, and the light transmission state of said electro-optical light-diffusing panel during said projection viewing mode;
wherein during said direct viewing mode, light produced from said light producing structure is scattered by said electro-optical light diffusing panel and spatial intensity modulated by said spatial light intensity modulation structure to form a first image for direct viewing; and
wherein during said projection viewing mode, light produced from said light producing structure is transmitted through said electro-optical light diffusing panel without substantial scattering and spatial intensity modulated by said spatial light intensity modulation structure to form a second image for projection onto a projection display surface for projection viewing.
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Abstract
A transportable image display system having direct and projection viewing modes of operation. The image display system comprises a spatial light modulation structure for spatially modulating the intensity of light produced from a light source, and light diffusing panel of electro-optical construction having a light scattering state in which light being transmitted therethrough is scattered in a diffusive manner, and a light transmission state in which light being transmitted therethrough is transmitted without substantial scattering. In the illustrative embodiments, the spatial light modulation structure can be an electrically-addressable LCD panel, or slide-film structures to be viewed. During the direct viewing mode, light produced from the light source is scattered by the light diffusing panel and spatial intensity modulated by the spatial light modulation structure to form a first image for direct viewing. During the projection viewing mode, light produced from the light source is transmitted through the light diffusing panel without substantial scattering and spatial intensity modulated by the spatial light modulation structure to form a second image for projection onto a projection display surface for projection viewing.
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Citations
20 Claims
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1. An image display system having direct and projection viewing modes, comprising;
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a light producing structure for producing light during said direct and projection viewing modes;
an electro-optical light diffusing panel having a light scattering state in which light being transmitted therethrough is scattered in a diffusive manner, and a light transmission state in which light being transmitted therethrough is transmitted without substantial scattering;
a spatial light intensity modulation structure for spatially modulating the intensity of light produced from said light producing means during said direct viewing mode and during said projection viewing mode; and
a state selection structure for selecting the light scattering state of said electro-optical light-diffusing panel during said direct viewing mode, and the light transmission state of said electro-optical light-diffusing panel during said projection viewing mode;
wherein during said direct viewing mode, light produced from said light producing structure is scattered by said electro-optical light diffusing panel and spatial intensity modulated by said spatial light intensity modulation structure to form a first image for direct viewing; and
wherein during said projection viewing mode, light produced from said light producing structure is transmitted through said electro-optical light diffusing panel without substantial scattering and spatial intensity modulated by said spatial light intensity modulation structure to form a second image for projection onto a projection display surface for projection viewing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification