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US 6,439,724 B1Granted
Color projector
AssigneeSamsung Electronics Co., Ltd.
InventorsKee-uk Jeon, Dae-je Chin
Life of this patent
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Abstract
A color projector for correcting chromatism by changing the sizes or positions of three display devices with respect to each color is provided. In the color projector, two or more display devices selected from the first through third display devices have different sizes of effective areas where an image is formed such that chromatism generated while lights of different colors synthesized by the synthesizing device pass the projection lens unit can be corrected. Also, the distances between two or more display devices selected from the first through third display devices and the projection lens unit are different from one another such that chromatism generated while lights of different colors synthesized by the synthesizing device pass the projection lens unit can be corrected.
Claims29
A color projector comprising:
- a light source which emits a light;
- a splitting device for splitting the light emitted from the light source to proceed along first through third optical paths according to a predetermined wavelength thereof;
- first through third display devices, arranged on the first through third optical paths, for forming an image from light of the predetermined wavelength;
- a synthesizing means for synthesizing lights of different colors to proceed along one path by selectively transmitting or reflecting input lights passing through the first through third display devices according to the predetermined wavelength thereof;
- and
- a projection lens unit for magnifying and projecting a color image synthesized by the synthesizing means toward a screen,
- wherein two or more display devices selected from the first through third display devices have different sizes of effective areas where an image is formed such that chromatism generated while lights of different colors synthesized by the synthesizing means pass the projection lens unit is corrected.
4 more elements
A color projector comprising:
- a light source which emits a light;
- a splitting device for splitting the light emitted from the light source to proceed along first through third optical paths according to a predetermined wavelength thereof;
- first through third display devices, arranged on the first through third optical paths, for forming an image from an input light of the predetermined wavelength;
- a synthesizing means for synthesizing lights of different colors to proceed along one path by selectively transmitting or reflecting input lights passing through the first through third display devices according to the predetermined wavelength thereof;
- and
- a projection lens unit for magnifying and projecting a color image synthesized by the synthesizing means toward a screen,
- wherein distances between two or more display devices selected from the first through third display devices and the projection lens unit are different from one another such that chromatism generated while lights of different colors synthesized by the synthesizing means pass the projection lens unit is corrected.
4 more elements
A color projector comprising:
- a light source for emitting a light;
- means for splitting the light emitted from the light source to proceed along first through third optical paths according to a predetermined wavelength thereof;
- first through third display devices, arranged on the first through third optical paths, for forming an image from an input light of the predetermined wavelength;
- means for synthesizing lights of different colors to proceed along one path by selectively transmitting or reflecting input lights passing through the first through third display devices according to the predetermined wavelength thereof;
- and
- a projection lens unit for magnifying and projecting a color image synthesized by the synthesizing means toward a screen,
- wherein two or more display devices selected from the first through third display devices have different sizes of effective areas where an image is formed such that chromatism generated while lights of different colors synthesized by the synthesizing means pass the projection lens unit is corrected.
4 more elements
A color projector comprising:
- a light source which emits a light;
- a splitting device which splits the light emitted from the light source to proceed along first through third optical paths according to a predetermined wavelength thereof;
- first through third display devices, arranged on the first through third optical paths, which form an image from an input light of the predetermined wavelength;
- a synthesizer,
- wherein said synthesizer allows lights of different colors to proceed along one path by selectively transmitting or reflecting input lights passing through the first through third display devices according to the predetermined wavelength thereof;
- and
- a projection lens unit which magnifies and projects a color image synthesized by the synthesizer toward a screen,
- wherein two or more display devices selected from the first through third display devices have different sizes of effective areas where an image is formed such that chromatism generated while lights of different colors synthesized by the synthesizer pass the projection lens unit is corrected.
5 more elements
A color projector comprising:
- a light source which emits light;
- means for splitting the light emitted from the light source to proceed along first through third optical paths according to a predetermined wavelength thereof;
- first through third display devices, arranged on the first through third optical paths, for forming an image from an input light of the predetermined wavelength;
- means for synthesizing lights of different colors to proceed along one path by selectively transmitting or reflecting input lights passing through the first through third display devices according to the predetermined wavelength thereof;
- and
- a projection lens unit for magnifying and projecting a color image synthesized by the synthesizing means toward a screen,
- wherein distances between two or more display devices selected from the first through third display devices and the projection lens unit are different from one another such that chromatism generated while lights of different colors synthesized by the synthesizing means pass the projection lens unit is corrected.
4 more elements
A color projector comprising:
- a light source which emits a light;
- a splitting device which splits the light emitted from the light source to proceed along first through third optical paths according to a predetermined wavelength thereof;
- first through third display devices, arranged on the first through third optical paths, which form an image from an input light of the predetermined wavelength;
- a synthesizer,
- wherein said synthesizer allows lights of different colors to proceed along one path by selectively transmitting or reflecting input lights passing through the first through third display devices according to the predetermined wavelength thereof;
- and
- a projection lens unit which magnifies and projects a color image synthesized by the synthesizer toward a screen,
- wherein distances between two or more display devices selected from the first through third display devices and the projection lens unit are different from one another such that chromatism generated while lights of different colors synthesized by the synthesizer pass the projection lens unit is corrected.
5 more elements
Dependencies are inferred from the claim text.