Image display device
First Claim
1. An image display device, comprising:
- light sources provided, respectively, for regions obtained by dividing an image forming region of an electro-optic modulator into plural regions to irradiate corresponding regions;
a light source control portion that performs lighting control on the light sources; and
the light source control portion performing the lighting control on the light sources for the respective regions independently in sync with writing of image data to the electro-optic modulator, and the lighting control being performed in such a manner that the light source corresponding to at least one region among the plural regions is kept unlit in a writing period for a screenful of image data wherein;
when the light source for each region includes more than one light source, the light source control portion performing the lighting control on more than one light source to enhance homogeneity of illuminance within each region.
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Abstract
Aspects of the invention can provide an image display device that can include light sources provided, respectively, for regions obtained by dividing an image forming region of an electro-optic modulator into plural regions to irradiate corresponding regions, and a light source control portion that performs lighting control on the light sources. The light source control portion can perform the lighting control on the light sources for the respective region independently in sync with writing of image data to the electro-optic modulator, and the lighting control can be performed in such a manner that the light source corresponding to at least one region among the plural regions is kept unlit in a writing period for a screenful of image data.
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Citations
20 Claims
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1. An image display device, comprising:
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light sources provided, respectively, for regions obtained by dividing an image forming region of an electro-optic modulator into plural regions to irradiate corresponding regions; a light source control portion that performs lighting control on the light sources; and the light source control portion performing the lighting control on the light sources for the respective regions independently in sync with writing of image data to the electro-optic modulator, and the lighting control being performed in such a manner that the light source corresponding to at least one region among the plural regions is kept unlit in a writing period for a screenful of image data wherein; when the light source for each region includes more than one light source, the light source control portion performing the lighting control on more than one light source to enhance homogeneity of illuminance within each region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An image display device, comprising:
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light sources provided, respectively, for regions obtained by dividing an image forming region of an electro-optic modulator into plural regions to irradiate corresponding regions; a light source control portion that performs lighting control on the light sources; the light source control portion performing the lighting control on the light sources for the respective regions independently in sync with writing of image data to the electro-optic modulator, and the lighting control being performed in such a manner that the light source corresponding to at least one region among the plural regions is kept unlit in a writing period for a screenful of image data; a diffusing plate that is provided between the light source for each region of the electro-optic light modulator and the region; and a light shielding plate that is provided between the diffusing plate provided for each region and the light source for the region, so that lights from the light sources corresponding to the other regions are shielded. - View Dependent Claims (13, 14, 15)
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16. An image display device, comprising:
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light sources provided, respectively, for regions obtained by dividing an image forming region of an electro-optic modulator into plural regions to irradiate corresponding regions; a light source control portion that performs lighting control on the light sources; the light source control portion performing the lighting control on the light sources for the respective regions independently in sync with writing of image data to the electro-optic modulator, and the lighting control being performed in such a manner that the light source corresponding to at least one region among the plural regions is kept unlit in a writing period for a screenful of image data; and a rod integrator that is provided for each region between the light source for each region of the electro-optic modulator and the region. - View Dependent Claims (17, 18, 19, 20)
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Specification