Patent application number | Description | Published |
20090109349 | IMAGE DISPLAY DEVICE - An image display device includes a light source, a diffractive optical element adapted to diffract a light beam emitted from the light source, and a light modulation element adapted to modulate a diffracted light beam obtained by the diffractive optical element, and a diffraction characteristic of the diffractive optical element is controlled based on a diffractive optical element control signal provided to the image display device. | 04-30-2009 |
20090161072 | ILLUMINATOR, IMAGE DISPLAY APPARATUS, AND POLARIZATION CONVERSION/DIFFUSION MEMBER - An illuminator that illuminates a projected surface includes a laser light source that emits laser light; a polarization converter disposed downstream of the laser light source, the polarization converter having a first area that converts the polarization direction of incident laser light into a first polarization direction and outputs the resultant laser light and a second area that converts the polarization direction of incident laser light into a second polarization direction and outputs the resultant laser light; and a light diffusion section disposed downstream of the laser light source, the light diffusion section diffusing incident laser light. | 06-25-2009 |
20090168424 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device adapted to generate an illumination light beam for illuminating an illuminated surface includes a light source adapted to emit a light beam, a light path conversion member adapted to rotate around an axis perpendicular to a center axis of the light beam emitted from the light source to convert a light path of the light beam emitted from the light source, an overlapping illumination element adapted to overlap a light beam emitted from the light path conversion member on the illuminated surface, the overlapping illumination element having an entrance position of the light bream input to the overlapping illumination element varies with time, and a rotating section adapted to rotate the light path conversion member. | 07-02-2009 |
20090174943 | ILLUMINATION DEVICE, IMAGE DISPLAY DEVICE, AND PROJECTOR - An illumination device includes: a light source unit that emits coherent light; and a diffractive optical element that diffracts the coherent light emitted from the light source unit and makes the diffracted light travel to an illuminated surface. The diffractive optical element is disposed such that the coherent light is incident in a state of being inclined with respect to a perpendicular line of a reference plane on which the diffractive optical element is disposed. Zero-order light, which is light other than the diffracted light, of light components emitted from the diffractive optical element travels to a position other than the illuminated surface. | 07-09-2009 |
20090213052 | IMAGE DISPLAY APPARATUS EMPLOYING LASER BEAM SOURCE AND IMAGE DISPLAY METHOD THEREFOR - An image display apparatus employing a laser beam source includes: a light modulating unit that modulates a laser beam emitted from the laser beam source into image light representing an image; and a driving-signal generating unit that generates, on the basis of an image signal of a frame image updated at a fixed first period, a driving signal for driving the light modulating unit. The driving-signal generating unit periodically inserts a noise image in the driving signal while maintaining timing for updating display of the frame image at the first period. | 08-27-2009 |
20100026919 | PROJECTOR AND LIGHT MODULATION DEVICE - A light modulation device which modulates light entering from a light source, includes: a light diffusing unit which converts diffusion angle of the light into an angle larger than that before entering the light modulation device and releases the converted light. | 02-04-2010 |
20110085095 | DISPLAY SYSTEM, SCREEN AND PROJECTOR - A display system includes: a screen in which, in an area on which invisible light is incident, a scattering state where visible light is scattered and a transmission state where visible light is transmitted are switched; an image projection system to project an image of the visible light onto the screen; and an invisible light projection system to project the invisible light onto the screen and to cause an area of the screen onto which a desired portion of the image is projected to have the scattering state. | 04-14-2011 |
20110141439 | IMAGE DISPLAY DEVICE - An image display device includes: at least one illumination system adapted to emit a light beam; at least one light modulation element adapted to modulate the light beam emitted from the illumination system; and a projection optical system adapted to project the light beam modulated by the light modulation element, wherein a proceeding direction of a principal ray of the light beam modulated by the light modulation element is nonparallel to an optical axis of the projection optical system when the light beam modulated by the light modulation element enters the projection optical system. | 06-16-2011 |