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7604354 |
Three-dimensional projection apparatus using coaxial optical alignment
A projection apparatus comprising a three-dimensional screen, a convex mirror, two or more projectors, and an assemblage of flat mirrored surfaces that share at least one common edge or apex that...
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7568806 |
Light source unit having a light source in a mirror tunnel
A light source unit includes a mirror tunnel which has a prism-like shape and whose external sides are formed to taper, and a light source which includes a light emitting device and which is...
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7562987 |
Complex mirror projection display
A rear projection display according to the present disclosure includes a complex mirror as an optical element to simplify the optical design. The mirror may be symmetrical about at least one axis...
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7562983 |
Three-dimensional display device
A three-dimensional image display device is disclosed. In one embodiment, the device uses a curved transmissive screen and reflectors to minimize the space associated with the device when...
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7542211 |
Image-forming optical system
A high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. The image-forming optical...
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7530694 |
Flat projection television
A flat projection television comprising an imagine engine mounted adjacent a top of an enclosure and optically coupled to a collimator mirror, a flat mirror, a mirror assembly comprising a...
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7520622 |
Display dock with integrated display screen
An apparatus for a display dock with an integrated display screen are disclosed herein.
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7517090 |
Real image projection device having plastic curved mirror for improving image and correcting aberrations
A device using a low-cost plastic curved mirror and several combinations of methods for reducing aberrations to improve a real image projection system is provided, so as to reduce ghost and...
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7488077 |
Objective for a projection apparatus, and corresponding front-projection or backprojection apparatus
The invention relates to a projection objective comprising at least one lens and intended to transmit a divergent light beam onto a flat screen. A hyperbolically shaped mirror is oriented so as to...
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7467872 |
Projection optical unit and projection type video display device using the unit
In the image display device, a projection lens including a plurality of lenses for enlarging an image from an image display element is constituted of a front group and a rear group. The rear group...
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7436572 |
Micromirrors and hinge structures for micromirror arrays in projection displays
A spatial light modulator is disclosed, along with methods for making such a modulator. The spatial light modulator comprises an array of micromirrors each having a hinge and a micromirror plate...
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7422332 |
Wall structure
A wall structure has a first wall and a second wall that faces the first wall. A part of the second wall or the entire second wall is configured as a rear-projection screen. A projector for...
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7393107 |
Rear-type projector
A projector includes a laser beam source that outputs a laser beam and modulates the laser beam in a beam form based on an image signal, a scanning unit that scans the laser beam output by the...
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7384154 |
Temperature control system and method for projection device lenses
A temperature control system and method for projection device lenses. The temperature control system includes a controllable heater for selectively heating one or more lenses pad a controller for...
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7360906 |
Projection optical system unit and projection-type image display apparatus using the same
A projection optical system unit has a lower pedestal. The lower pedestal has first and second tubular portions opened to each other. An image formation device holding plate for a DMD is mounted on...
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7350925 |
Total internal reflection Fresnel lens and optical system using the same
Described is an optical lens having a light-receiving surface facing a light source and a first structured surface opposite a first portion of the light-receiving surface. The first structured...
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7338176 |
Elevator installation with information representation on a shaft door
An elevator installation includes an elevator car moved in an elevator shaft between floors in a building. A shaft door for closing the elevator shaft is arranged at each floor. A method for...
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7331679 |
Reflection unit having a mirror array, and projection display system employing the same
A projection display system includes a screen, an illumination projecting system to form an image using light radiated by a light source, to magnify the image, and to project the image along a rear...
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7331678 |
Method and system for a thermal architecture and user adjustable keystone in a display device
A rear projection display device. The display device includes a screen and a base to which the screen is mounted. The base includes a plurality of vents to allow air to flow in and out of the base,...
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7314281 |
Projection display device
A projection display device having a plurality of transmission screens, each having an image display portion of different dimension, and each having light transmissivity and being provided with a...
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7300158 |
Projection display apparatus
The invention concerns a display apparatus with an imager illuminated by an illumination system and with an imaging system projecting an image on a viewing screen, wherein the brightness of the...
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7259919 |
Thin-profile projection system
A relatively thin-profile projection display device that employs at least two anamorphic components is disclosed herein.
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7253954 |
Flat valley fresnel lens
A Fresnel lens. The Fresnel lens includes an input side configured to receive the image and an output side, opposite the input side, configured to display the image. The input side includes a first...
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7239452 |
Projection optical system
A projection optical system for performing enlargement projection from a primary image surface on the reduction side to a secondary image surface on the enlargement side has, from the primary image...
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7237908 |
Image display system
An image display system includes a light valve 14 for providing image information to light converged by a converging lens 13 and for emitting the light, a projective optical system 20 ...
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7178921 |
Image projection apparatus
An oblique projection optical system for leading rays of light from a display surface on which an image is displayed to a projection surface in such a way that the ray of light from the center of...
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7102820 |
Flat valley fresnel lens for a display device
A Fresnel lens for a display device is provided. The Fresnel lens includes a first sloped surface angled to receive input light, a second sloped surface facing the first sloped surface, and a...
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7088509 |
Laminate screen for display device
A rear projection display device is provided. In an embodiment, the display device includes a laminate screen including a Fresnel lens lamina having a non-planar input surface, a substantially...
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7080910 |
Method and system for a thermal architecture and user adjustable keystone in a display device
A method and system for a thermal architecture and user adjustable keystone in a display device is described. The system includes a screen, a lens to project images, and one or more mirrors to...
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7077528 |
Digital projection display system with external light source
A digital projection display system includes one or more digital projection displays. Each digital projection display has an external light source producing as an output a light beam, an internal...
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7059730 |
Back reflective mirror and back projection type video display device using the same
In the present invention, there is disclosed a reflective mirror whose contrast or resolution performance is equal to that of a surface mirror of a glass mirror for general use and which does not...
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7029128 |
Table type display device
A table type display device, in which a high resolution display with an unremarkable connection is realized at the time of large screen display by using a screen with a composition having few...
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7021770 |
Rear projection optical system
An oblique projection optical system for leading rays of light from a display surface on which an image is displayed to a projection surface in such a way that the ray of light from the center of...
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6991338 |
Projection optical system, projection type image display apparatus, and image display system
A projection optical system having a plurality of reflecting surfaces is disclosed in which a sufficiently large angle is provided between an incident side reference axis and an emerging side...
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6935747 |
Image enhancement and aberration corrections in a small real image projection system
An improved real image projection system comprises, in the primary configuration, a tilted mirror to eliminate ghost reflections, and a unique arrangement allowing the introduction of a second...
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6848794 |
Reflecting optical element, optical system and optical apparatus using reflecting optical element, projection type image display apparatus, and method for fabricating reflecting optical element
A reflecting optical element is disclosed which includes the following articles. The reflecting optical element is constituted by:
a base member having a continuous curved-surface portion,...
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6811265 |
Retractable image projecting system
An image projecting system for mounting in a hidden location such as a ceiling or a piece of furniture such as a desk. The system includes an image producing apparatus and a plurality of optical...
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6808271 |
Projection type display apparatus
In order to achieve a great improvement in light utilizing efficiency, a projection type display apparatus for obliquely projecting an original image onto a screen includes a first projection...
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6805447 |
Rear projection display device and projecting method used for the same
A flat mirror for folding an optical path in a casing of a rear projection television is arranged in the casing on not the side of a screen but a rear or upper side of the casing. In order to...
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6773115 |
Adjusting apparatus for projection
An adjusting apparatus for projection comprises a carrier having a central screw hole and three rounded indentations around central screw hole, an adjusting frame having a plane section and a base...
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6761458 |
Rear projection optical system
Disclosed herewith is a rear projection optical system for being installed at a rear side of a screen of a rear projection apparatus. The rear projection system comprises: a display panel; a...
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6755534 |
Prismatic optical display
A spatially modulated light beam is projected, reflected, and redirected through a prismatic optical panel to form a video image for direct viewing thereon.
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6752500 |
Rear surface projection type display device
A rear projection display device capable of reducing the depth of a display device itself, comprising an optical engine, first, second, third reflective mirrors arranged at such positions as to be...
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6733140 |
Method of ghost reduction and transmission enhancement for a real image projection system
A real image projection system includes at least one curved reflector, positioned in a tilted configuration, wherein an optical axis of the reflector is not coincident with a viewing axis, and a...
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6719432 |
Optical assembly for rear projection television
The present invention comprises a carrier, an optical engine disposed on the carrier, and a hood member coupled to the carrier at the front end of the optical engine. The hood member has an inlet...
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6612701 |
Image enhancement in a real image projection system, using on-axis reflectors, at least one of which is aspheric in shape
A real image projection system comprising two or more optical surfaces of revolution, with at least one comprising an aspheric surface of revolution. The aspheric surface of revolution is of a...
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6594078 |
Interlocking mounting package having separatable chassis for use in multiscreen projection displays
A stackable mechanical package for a digitally addressed projector ( 12 N) includes a housing portion ( 22 ) having top and rear surfaces ( 44 ) that are shaped to form a contoured recess ( 46 ),...
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6561649 |
Compact rear projection system using birefringent optics
A rear projection system provides for reduced cabinet depth by folding the optical path with polarization sensitive mirrors. In one aspect, the projector outputs linearly polarized light to a...
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6511186 |
Focus and aim device and method for image projection
An image projection system includes an image generator, a screen and a focus and aim component. The focus and aim component receives modulated light from the image generator and focuses and...
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6494582 |
Projection monitor having darkroom
The present invention relates to a projection monitor, and in particular to a projection monitor having a darkroom casing capable of preventing a penetration of a foreign material and any leakage...
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