Image display apparatus
AssigneeRicoh Company, Ltd.
InventorsKazuya Miyagaki, Kenji Kameyama, Takanobu Osaka, Ikuo Katoh, Atsushi Takaura, Kenji Namie, Yasuyuki Takiguchi
Life of this patent
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Abstract
An image display apparatus includes an indicating element which modulates or emits light as a pixel in accordance with image information. A displacement unit optically displaces a position of the pixel for each of two or more sub-fields constituting an image field corresponding to the image information. A projection unit enlarges the pixel and projects an enlarged pixel on a screen. A pixel-profile deformation unit changes an optical intensity profile of the pixel.
Claims36
A projection image display apparatus comprising:
- an indicating element configured to modulate or emit light as a pixel in accordance with image information;
- a pixel-profile deformation unit configured to deform an optical intensity profile of the pixel;
- a displacement unit configured to optically displace a position of the pixel, the optical intensity profile of the pixel being deformed by the pixel-profile deformation unit, for each of two or more sub-fields constituting an image field corresponding to the image information;
- and
- a projection unit configured to enlarge the pixel, the optical intensity profile of the pixel being deformed by the pixel-profile deformation unit, and to project an enlarged pixel on a screen.
An image display apparatus comprising:
- a light source configured to emit light;
- an irradiation optical element configured to convert the light from the light source into an irradiation beam;
- a plurality of optical modulators, each optical modulator configured to modulate the irradiation beam in accordance with image information and each optical modulator is configured to output a reflected beam;
- a reflection-type beam profile deformation unit, provided in each of the plurality of optical modulators, configured to deform a beam profile of the reflected beam output from each optical modulator;
- and
- a light path modulation unit configured to optically displace a position of the reflected beam, the optical intensity profile of the reflected beam being deformed by the reflection-type beam profile deformation unit.
The image display apparatus of 28, wherein the micro prism of the beam profile deformation unit includes a diffraction grating.
Dependencies are inferred from the claim text.