Patent application number | Description | Published |
20080259284 | ILLUMINATION DEVICE AND PROJECTION VIDEO DISPLAY DEVICE - An illumination device includes a first light source unit having a plurality of first light sources, and a first reflection unit for guiding light beams emitted respectively from the first light sources in an identical direction. The illumination device further includes a second light source unit having at least one second light source. A center of an optical axis of the second light source is defined in an area where a light amount distribution of light beams to be emitted from the first light source unit and reflected on the first reflection unit is relatively small. | 10-23-2008 |
20080266528 | PROJECTION DISPLAY DEVICE - A projection lens unit and a projection mirror unit are moved relative to an illumination optical system, between a first position where an image is projected in a shape that is longer along a direction of projection onto a projection plane and a second position where an image is projected in a shape that is longer along a direction perpendicular to the direction of projection onto the projection plane. When the projection lens unit and the projection mirror unit are located in the first position, a vertically long image is projected onto the projection plane (portrait display). In this state, when the projection lens unit and the projection mirror unit are moved to the second position, a horizontally long image is projected onto the projection plane (landscape display). | 10-30-2008 |
20080309885 | PROJECTION DISPLAY DEVICE - An optical system (light guiding optical system) for guiding G-light and R-light to liquid crystal panels is protruded in an opposite direction from projection optical system with regard to an optical axis of a light source. A space is created between an optical engine and a wall surface, and air stream for suction fan is thus secured. A distance (H | 12-18-2008 |
20090040473 | PROJECTION IMAGE DISPLAY APPARATUS - A projection image display apparatus includes a lens unit into which light modulated in accordance with an image signal is entered, a first reflecting mirror having a reflecting surface into which the light passing through the lens unit is entered and by which the light is converged, a second reflecting mirror for reflecting the light reflected by the first reflecting mirror, and a mirror actuator for changing a tilt angle of the second reflecting mirror with respect to the light. | 02-12-2009 |
20090040753 | ILLUMINATION DEVICE AND PROJECTION DISPLAY DEVICE - An illumination device comprises: a plurality of laser light sources arranged so as to be identical in a direction of light emission; an optical element for converting laser light emitted from the laser light sources into parallel light at least in one direction; and a fly-eye lens into which the laser light converted into parallel light is entered. Placement of the laser light sources is adjusted in such a manner that incident regions of the laser light on the fly-eye lens are mutually shifted in a row or column direction of lens cells disposed in the fly-eye lens. | 02-12-2009 |
20090153809 | PROJECTION OPTICAL SYSTEM AND PROJECTION DISPLAY DEVICE - A projection optical system includes a first refracting optical system having a plurality of lenses, a first reflecting optical system, and a second reflecting optical system. The first reflecting optical system is disposed on a side of a projection port with respect to an optical axis of the first refracting optical system, and has a positive optical power to reflect light incident through the first refracting optical system in a direction opposite to the side of the projection port. The second reflecting optical system is operable to reflect the light reflected on the first reflecting optical system toward the projection port. | 06-18-2009 |
20100073637 | ILLUMINATING DEVICE AND PROJECTION DISPLAY DEVICE - An illuminating device includes a plurality of light source portions for emitting light, a plurality of optical fibers for allowing incidence of the light emitted from the respective light source portions, and a bundling portion for bundling exit ends of the optical fibers. The light source portions or the optical fibers are constructed in such a manner that a flexure of each of the optical fibers is suppressed to mount the each optical fiber in a state close to a straight state. For instance, the light source portions are arranged in an arc shape, with a distance of each of the light source portions with respect to the bundling portion being set as the radius of the arc shape. In this arrangement the respective optical fibers are set to have lengths substantially equal to each other. | 03-25-2010 |
20100182573 | ILLUMINATING DEVICE AND PROJECTION DISPLAY DEVICE - An illuminating device includes a plurality of light source portions having a light source and condenser optics for condensing light from the light source, a plurality of optical fibers each connected to a corresponding one of the light source portions and into which the light from the corresponding condenser optics is incident, and a bundling portion for bundling the plurality of optical fibers. The plurality of light source portions are arranged on a plane approximately parallel to a bundling-central axis of the bundling portion, and the farther the light source portion is arranged from the bundling portion, the more the optical axis of the condenser optics is tilted toward the bundling portion from a direction vertical to the plane. | 07-22-2010 |
20100245781 | PROJECTION DISPLAY APPARATUS - A projection display apparatus includes a housing case housing a solid light source, a light valve configured to modulate light emitted from the solid light source, and a projection unit configured to project light emitted from the light valve on a projection plane. The projection display apparatus includes a cable terminal provided on at least one of sidewalls forming both ends of the housing case in a horizontal direction parallel to the projection plane. | 09-30-2010 |
20100245787 | PROJECTION DISPLAY APPARATUS - A projection display apparatus includes a housing case housing a light source unit, a light valve, a projection unit, and a cooling unit. A size of the housing case in an orthogonal direction to a projection plane is smaller than a size of the housing case in a horizontal direction parallel to the projection plane. The projection unit is arranged at substantially center of the housing case in the horizontal direction parallel to the projection plane. | 09-30-2010 |
20100245788 | PROJECTION DISPLAY APPARATUS - A projection display apparatus includes a housing case housing a light source unit, a light valve, a projection unit, and a cooling unit. A size of the housing case in an orthogonal direction to a projection plane is smaller than a size of the housing case in a horizontal direction parallel to the projection plane. The projection unit is arranged at substantially center of the housing case in the horizontal direction parallel to the projection plane. | 09-30-2010 |
20110063586 | PROJECTION DISPLAY DEVICE - A projection display device includes: an optical engine that emits image light in a direction parallel to a projection plane; a first reflective optical system that reflects the image light in a first direction away from the projection plane; a second reflective optical system that reflects the image light reflected by the first reflective optical system in a second direction away from the optical engine and closer to the projection plane; and a refractive optical system. The refractive optical system is divided into a first refractive optical system interposed between the optical engine and first reflective optical system, and second refractive optical system interposed between the first and second reflective optical system. The optical engine is arranged so that a mounting plane of optical components is almost perpendicular to a plane parallel to both of the first and second directions and is almost parallel to the projection plane. | 03-17-2011 |
20110069286 | PROJECTION DISPLAY APPARATUS - A projection display apparatus includes a housing case housing a plurality of light sources, a reflective light valve, and a projection unit. The housing case has a base plate and a ceiling plate. The ceiling plate is provided with a transmission area and a projection-plane-side shield plate, the transmission area being an area through which light emitted from the projection unit passes, the projection-plane-side shield plate being placed closer to the projection plane than the transmission area. The projection-plane-side shield plate is configured to shield unwanted light being other than light forming an image among light passed through the transmission area. | 03-24-2011 |
20110157555 | STEREOSCOPIC-IMAGE DISPLAY DEVICE - An image signal storing unit stores an image signal provided from the outside. An image processing unit appropriately processes the image signal stored in the image signal storing unit in accordance with the instruction from an adjusting unit. A projecting unit projects, onto a display area, light corresponding to an image created by the image processing unit. A display size determination unit computes the display size of the picture plane displayed on a screen based on an image captured by the camera provided adjacent to the projection-type video-image display device. The display size determination unit then determines whether or not the display size of the picture plane is equal to or larger than a predetermined upper-limit size. | 06-30-2011 |
20110292355 | REFRACTIVE OPTICS AND PROJECTION DISPLAY APPARATUS - Disclosed are a projection display apparatus and a projection optics provided in the projection display apparatus. The projection optics has a refractive optics and a reflective optics. In the refractive optics, a lens (non-circular lens) provided on a reflective optics side has a non-circular shape forming part of an imaginary circular region whose center is an optical axis center of the refractive optics. In other words, the non-circular lens has a shape of a cut-out portion of an imaginary circular lens having an optical axis center coinciding with the optical axis center of the refractive optics. | 12-01-2011 |