Projection device and method for transmitting light in a projection device
First Claim
1. - A projection device, wherein light emitted from at least one light source, is split in different colors, in particular primary colors, and subsequently is transmitted to respective light valves, said projection device comprising several optical components, wherein said optical components are arranged in such configuration that at least one splitting takes place at a location in which the light of said at least one light source is still in a quasi-parallel or parallel state.
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Accused Products
Abstract
A projection device, wherein light (1) emitted from at least one light source (2), is split in different colors (3-4-5), in particular primary colors, and subsequently is transmitted to respective light valves, said projection device comprising several optical components, wherein said optical components are arranged in such configuration that at least one splitting takes place at a location in which the light (1) of said at least one light source (2) is still in a quasi-parallel or parallel state.
5 Citations
13 Claims
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1. - A projection device, wherein light emitted from at least one light source, is split in different colors, in particular primary colors, and subsequently is transmitted to respective light valves, said projection device comprising several optical components, wherein said optical components are arranged in such configuration that at least one splitting takes place at a location in which the light of said at least one light source is still in a quasi-parallel or parallel state.
- 2. - A projection device, wherein light emitted from at least one light source by means of light splitting elements, is split in different colors, in particular primary colors, and subsequently, is transmitted to respective light valves, said projection device comprising several optical components, amongst which at least one light integrator or light integrator component, which integrator or light integrator component is located in the path followed by the light downstream of at least one of said light splitting elements.
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10. - A projection device, wherein light emitted from at least one light source by means of light splitting elements, is split in different colors, in particular primary colors, and subsequently, is transmitted to respective light valves, said projection device comprising several optical components, amongst which at least one polarizer, in particular a prepolarizing array, wherein this polarizer or prepolarizing array is located downstream from at least one of the light splitting elements, and preferably downstream of all light splitting elements which are required to obtain the light of the color in which said polarizer or prepolarizing array is located.
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11. - A projection device, wherein light emitted from at least one light source, is split in different colors, in particular primary colors, and subsequently is transmitted to respective light valves, wherein these light valves create colored images which by means of polarizing beam splitters, are directed to a color composition element, such as an X-cube, wherein at least one of said polarizing beam splitters, and preferably each of said polarizing beam splitters, consist of wire-grid polarizers.
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12. - A method for transmitting light in a projection device, wherein light emitted from at least one light source is split in different colors, in particular primary colors, and subsequently, is transmitted to respective light valves, wherein one of the following steps or a combination of two or more of the following steps takes place:
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that for at least one of said colors, or for at least one group of already split-off colors, and preferably for each of said colors, the splitting of the light takes place at a location in which the light of said at least one light source is still in a quasi-parallel or parallel state;
that for at least one of said colors, or for at least one group of already split-off colors, and preferably for each of said colors, an integration takes place after the splitting in the respective color or group of colors is carried out;
that for at least one of said colors, or for at least one group of already split-off colors, and preferably for each of said colors, a prepolarization takes place after the splitting in the respective color or group of colors is carried out, whereby this prepolarization in case of an integration of the light is preferably carried out after this integration;
that for at least one of said colors, or for at least one group of already split-off colors, and preferably for each of said colors, a splitting up to this color or group of colors, takes place before any focussing with respect to this color or group of colors is carried out;
that by means of the light valves colored images are created which by means of polarizing beam splitters are directed to a color composition element, such as an X-cube, wherein for said polarizing beam splitters, wire-grid polarizers are applied;
that the light of the different colors is transmitted through the projection device in such a manner that, in respect to each other, an inversion is excluded, this preferably in combination with the use of an X-cube and transmissive displays. - View Dependent Claims (13)
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Specification