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6474819 |
Combination overhead projector and electronic display device
A projection display that combines both overhead projector and electronic display functionality in a single projector. This invention provides a single comprehensive solution, which addresses both...
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6471358 |
Lighting device and projector
The present invention provides a lighting device that has two lamp units and is suitable for a light source of a projector-type display apparatus to realize bright illumination, and also a...
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6439726 |
System in which light is directed from a light source onto a surface
An arrangement in which light is directed onto a surface proceeding from a light source by first optics, so that an image is formed which can be detected by second optics, the arrangement having...
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6419365 |
Asymmetrical tunnel for spatially integrating light
A projector includes a source of polychromatic light that propagates through color filter segments of a color wheel and enters an input aperture of an asymmetrical light integrating tunnel that...
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6416180 |
Projection lamp for the projection of colored light effects
A projection lamp ( 10 ) for the projection of colored light effects includes a light source ( 18 ) and a transparent container ( 12 ) which is arranged in the beam path of the light source ( 18 )...
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6412954 |
Dust-proof device for solid integration rod in projecting apparatus
A dust-proof device for a solid integration rod in projecting apparatuses is provided in the invention. The solid integration rod has a layer of metal reflecting film with a certain length in axial...
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6412953 |
Illumination device and image projection apparatus comprising the device
An illumination device and an image display apparatus using the same. The illumination device comprising a light source, an illumination uniformizing device, and a polarization converter. The image...
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6409348 |
Projector
In an illumination optical system; a wavelength separating optical system; plural light modulation devices provided respectively so as to modulate the light in the plural wavelength regions...
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6409351 |
Spherical image projection system using a convex reflecting image dispersing element
A projection system employs a convex reflecting mirror to disperse a projected image onto the inner surface of a screen enclosing a spherical or other three-dimensional space. When the screen is a...
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6406150 |
Compact rear projections system
A rear projection imaging system includes a light collimator, a curved turning mirror and a projector source. The projector source is operable to anamorphically project an image along a projection...
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6398368 |
Light pipe for a projector system
A light pipe is designed for a projector system. The light pipe gathers the light from a light source and guides the gathered light to an image device in the projector system. The area of the exit...
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RE37578 |
Image projection system
An image projector is provided with a light valve having an upstream side and an downstream side. A light source is disposed on the upstream side of the light valve, and a front lens system with an...
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6352346 |
Image forming optical system employing a reflective type spatial light modulator
An image forming optical system has an illumination light source for forming an illumination light beam, a reflective type image forming device for optically modulating the illumination light beam...
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6315415 |
Image projector
A projector has an illumination optical system, a reflection-type display panel, a projection optical system, and light-introducing device. The display panel is illuminated by the illumination...
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6302542 |
Moving screen projection technique for volumetric three-dimensional display
This invention relates generally to improved approaches for displaying volumetric three-dimensional (3D) images. The basic idea features improved optical-mechanical mechanisms enabling creation of...
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6302544 |
Image projection system with light reflector
In an image projection system, light emitted by a point source is reflected off the concave surface of a reflector to a fly-eye-lens system where the incident light is distributed to uniformly...
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6264333 |
Reflection type projector
A reflection type projector includes a light source, a micro mirror device having many micromirrors two-dimensionally arranged, a separation prism and a projection lens. The separation prism is...
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6260974 |
Image projecting apparatus
An image projecting apparatus comprises an optical element including a first end surface, a second end surface and a reflection surface for connecting the first and second surfaces and constructed...
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6229561 |
Three-dimensional image system
A multi-view three-dimensional image system that enables a plurality of observers to view a three-dimensional image simultaneously in the visible ray range without the utilization of special...
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6224218 |
Backscreen edge contouring for off-axis large field of view displays
An off-axis backscreen visual display system having an increased vertical field of view (FOV) is disclosed. The lower edge of the backscreen member in the display system is contoured in accordance...
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6179425 |
Image projection system
The invention relates to an image projection system (1). The system comprises an illumination system (3) with a radiation source (5) and a modulation system comprising at least one reflective image...
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6181388 |
Projector of a reflection type
A projector of a reflection type has a Fresnel lens disposed under a stage surface on which a transparency is set. A light source is disposed under the Fresnel lens, and illuminates the stage...
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6178043 |
Multiview three-dimensional image display system
A multiview three-dimensional image display system comprises an image projection screen, two image generation components, a bifold mirror, an spatial light modulator, and projection optics. Each of...
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6170954 |
Overhead projector of the under mirror type
An overhead projector of the under mirror type includes a projection head assembly supported on a column so as to be located over a stage on the top of a housing and so as to be pivotable between a...
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6139156 |
Light source device and projection type display apparatus
A light source device or a projection type display apparatus has a pillar optical element; a condenser means; and a first lens effective to focus the image of the emitting end face of the pillar...
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6135599 |
Projection ornament
A projection ornament, which includes a lens having a first side that admits light and a second side that reflects light, a light permeable element, which can be a transparent film having a design...
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6129437 |
Image display apparatus
An image display apparatus includes an arc lamp as a white-light source, an ellipsoidal mirror for collecting a light beam from the arc lamp, a color filter for producing sequentially three primary...
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6102545 |
Liquid crystal display unit
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6097449 |
Liquid-crystal projector having a mirror with a specific tilt adjustment mount
A light projector is disclosed that enables a bright display image to be presented with minimum waste of useable light. By arranging at least one light directing means, such as a mirror or a...
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6089720 |
Illuminating optical apparatus
An illumination mechanism is disclosed which has a high efficiency of illumination and which is compact. The mechanism includes a reflector, a light source, a first lens array with plural lens...
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6056405 |
Lamp module with kinematic mount
A lamp module includes a lamp-reflector assembly supported within a plastic lamp frame for installation within an image projector to direct light toward a projection engine of the image projector....
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6052229 |
Image display system using a thin-film actuated mirror array
In an image display system capable of displaying an M×N number of pixels based on optical projection, a light source emits a white light, the white light being reflected on a total mirror at a...
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6049403 |
V-splitter for optical engine
An optical engine in which full-spectrum light is split into its three primary beam components of red, blue and green, which components are then modulated by reflective or transmissive light valve...
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6024451 |
Illumination system and image projection device provided with such an illumination system
The invention relates to an illumination system (1) comprising, in this order, a radiation source (5) and an integrator system (11). First reflecting means are present in the exit plane (25) of the...
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6003995 |
Rotating backscreen and/or projectors for off-axis large field of view display
An off-axis backscreen visual display system with rotating backscreen and projector assembly. The system includes a full color projector for projecting the image beam, and a backscreen which...
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6005722 |
Optical display system including a light valve
An optical display system includes a light source, a color wheel, an optical train and a light valve. The optical train includes a diffuser element, a compound parabolic concentrator and an...
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5985465 |
Lamp reflector molding composition, lamp reflector, and headlamp
A molding composition for a lamp reflector is disclosed, which comprises an unsaturated polyester resin, glass fiber, inorganic filler and a thermoplastic resin in an amount effective for...
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5980044 |
Area of interest display system with image combining using error dithering
A method and apparatus for providing an improved area of interest display system by providing a transition zone between a high resolution image being reflected onto and a low resolution image being...
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5973841 |
Single-plate projection-type color liquid crystal display
A display device for displaying an image has a light source; an image forming element array for forming images of irradiation light beams emitted from the light source; a display panel including...
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5961195 |
Image display device and simulation device
One embodiment of the invention includes an image display device. The image display device includes a projector for emitting an image, a screen on which the image is projected, and a mirror for...
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5911489 |
Optical lighting system
A lighting system comprises a light source and a reflector arrangement which comprises a concave first reflection mirror having an aspherical surface for reflecting and directing forward light...
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5902033 |
Projector system with hollow light pipe optics
A projector system includes a light pipe integrator (LPI) between its lamp and its projection lens system. The LPI is hollow, formed from sheet metal, and has an internal cold mirror coating which...
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5900982 |
High efficiency light valve projection system
A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video...
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5896236 |
Metallized plastic film mirror for projection television receiver
A mirror for a rear projection television receiver is formed of stretched and heat-shrunk metallized plastic film A U-shaped aluminum frame is formed out of roll stock and cut and bent into the...
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5890788 |
Anamophic optical system
An optical system (10) has an image source (12), a first optical element (34), a second optical element (50), and an aperture stop (52). The first optical element (34) is positioned close to the...
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5886818 |
Multi-image compositing
Image compositing apparatus and methodology for the creation, in a defined volume of three-dimensional space, of a composite organization of plural images/visual phenomena, including at least one...
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5871266 |
Projection-type display device
Disclosed is an inexpensive, bright, compact, lightweight, high-definition projection-type display device that has a comparatively simple structure but satisfies demands for oblique projection,...
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5853240 |
Projector using a small-size optical system
A small and light liquid-crystal projector, a projector making a combination with a head-mounted display and a small-and-light projector device for projecting an image or three-dimensional image...
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5839808 |
Projection optical system
A projection system is disclosed including a light source for producing an illumination light flux, and a light valve for converting the illumination light flux incident on the light valve into a...
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5833340 |
Sensory integration system and image display device and concave mirror for use in the same system
A concave mirror which has rigidity higher than an aluminum foil mirror and is light-weight and low cost compared with a polished glass mirror is composed of at least one concave mirror unit of a...
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