Projection display system with varying light source
First Claim
1. A projection apparatus, comprising:
- a light source;
at least one spatial light modulator comprises a plurality of pixel elements controllable to operate in different modulation states for modulating an illumination light projected from the light source;
a light source control unit controls and modulates the light source; and
a spatial light modulator control unit receives and applies an input image signal for generating a control signal for driving the spatial light modulator, wherein the light source control unit further having a video image analysis unit for receiving and analyzing the control signal generated by the spatial light modulator control unit for applying video image analysis results for controlling the illumination light emitted from the light source for adjusting an emission intensity of the illumination light to change between a bright image and a dark image or adjusting a ratio between primary colors.
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Accused Products
Abstract
The present invention provides a projection apparatus, comprising: a light source; at least one spatial light modulator for modulating illumination light from the light source by a plurality of pixel elements by using different modulation states; a light source control unit performing a modulation control of the light source; and a spatial light modulator control unit generating, from an input image signal, a control signal for driving the spatial light modulator, wherein: the light source control unit has a function of receiving data corresponding to the control signal generated by the spatial light modulator control unit, controlling a parameter of an emission pulse of the illumination light emitted from the light source, and thereby adjusting an emission intensity of the illumination light.
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Citations
25 Claims
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1. A projection apparatus, comprising:
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a light source; at least one spatial light modulator comprises a plurality of pixel elements controllable to operate in different modulation states for modulating an illumination light projected from the light source; a light source control unit controls and modulates the light source; and a spatial light modulator control unit receives and applies an input image signal for generating a control signal for driving the spatial light modulator, wherein the light source control unit further having a video image analysis unit for receiving and analyzing the control signal generated by the spatial light modulator control unit for applying video image analysis results for controlling the illumination light emitted from the light source for adjusting an emission intensity of the illumination light to change between a bright image and a dark image or adjusting a ratio between primary colors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A projection apparatus, comprising:
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light sources comprising at least a red (R) light, a green (G) light, and a blue (B) light; at least one spatial light modulator for modulating illumination light from the light sources by a plurality of pixel elements by using different modulation states; at least one spatial light modulator comprises a plurality of pixel elements controllable to operate in different modulation states for modulating an illumination light projected from the light sources; a light source control unit controls and modulates the light source; and a spatial light modulator control unit receives and applies an input image signal for generating a control signal for driving the spatial light modulator, wherein the light source control unit further having a video image analysis unit receiving and analyzing the control signal generated by the spatial light modulator control unit for controlling the illumination light emitted from the light sources for applying video image analysis results for adjusting a ration of the emission intensities of the illumination light of the respective red, green and blue (R/G/B) colors. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A projection apparatus, comprising:
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at least a light source for projecting an illumination light of different colors; a light source control device for controlling the light source; at least one micromirror device comprises a plurality of mirror elements for reflecting the illumination light projected from the light source; a micromirror device control device receives and applies an input image signal for generating a control signal for controlling the micromirror device; and a projection optical system for projecting, to a screen, the illumination light deflected by the micromirror device, wherein the light source control device having a video image analysis unit for receiving and analyzing the control signal generated by the spatial light modulator control unit for applying video image analysis results for controlling the illumination light emitted from the light source to adjust an emission intensity of the illumination light to change between a bright image and a dark image or adjusting a ratio between primary colors. - View Dependent Claims (21, 22, 23)
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24. A projection apparatus comprising:
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at least a light source for projecting an illumination light of different colors; a light source control device for controlling the light source; at least one micromirror device comprises a plurality of mirror elements for reflecting the illumination light projected from the light source; a micromirror device control device for controlling the micromirror device; and a projection optical system for projecting, to a screen, the illumination light deflected by the micromirror device, wherein the light source control device adjusts an emission intensity of the illumination light depending on a brightness during a display period of one frame for each of said colors and a combination of a brightness in the ON state and the intermediate state for each of said colors during the display period of one frame.
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25. A projection apparatus comprising:
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at least a light source for projecting an illumination light of different colors; a light source control device for controlling the light source; at least one spatial light modulator comprises a plurality of modulating elements for modulating the illumination light projected from the light source; a spatial light modulator control device for controlling the spatial light modulator; and a projection optical system for projecting, to a screen, the illumination light deflected by the spatial light modulator wherein the light source control device adjusts an emission intensity of the illumination light by adjusting an area size of a pulse of the light source control device to control the emission intensity of the illumination light projected from the light source.
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Specification