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6783249 |
Projection-type image display device
A projection-type image display device includes a light source, converging optics, a rod integrator having a first optical axis, a light deflecting structure, and a light beam separating structure....
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6784946 |
Assembly, in which light from a light source is directed onto a surface
An arrangement in which the light emitted by a source of light ( 44 ) is directed by means of illumination optics ( 12 ) onto a surface ( 25 ) by which an image can be generated that can be...
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6773116 |
Projection display device
The invention relates to a projection display device comprising an illumination system having a light source and an optical guiding means for providing an illumination beam, and an image display...
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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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6758579 |
Illuminating-light controller, projector, and illuminating-light control method
An illuminating-light controller includes a light modulator for projecting light on a corresponding area by tilting a reflecting surface. A first light source emits a first light that is projected...
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6755539 |
Reflective LCD projector
An apparatus for projecting an image includes a light source, a polarization modulator, a projection lens, and a mirror. The mirror is positioned between the light source and the modulator and...
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6751019 |
Ultrathin mesh optical panel and a method of making an ultrathin mesh optical panel
An ultrathin mesh optical panel and a method of use and making are disclosed. One embodiment of the optical panel includes a plurality of optical waveguides, wherein each optical waveguide is...
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6742897 |
Liquid crystal projector device
A liquid crystal projector device, wherein an s-polarization PBS ( 4 ) forms light from a light source ( 1 ) a set of s-polarization components; an optical unit ( 7 ) reflects a green-region light...
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6739726 |
Illumination engine for a projection display using a tapered light pipe
An illumination engine for a projection display using a TLP including a reflector having a first focal point and second focal points. A source of electro-magnetic radiation disposed proximate to...
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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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6735015 |
Display apparatus
Display apparatus ( 50 ) comprising a front projection screen ( 60 ), at least one projector ( 54 ) which is for providing a display on the screen ( 60 ) and which is positioned outside an enclosed...
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6726335 |
Shutter for image projection system
An image projection system comprises an image projector, such as a film or television projector and a projection screen. The projection screen is fabricated of a substantially transparent material,...
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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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6719427 |
Display device, projection display apparatus, driving device for light modulator, and method for driving light modulator
A display device includes a light modulator used as an image forming unit and a projection optical system for projecting and displaying an image. In the display device, gradation is represented by...
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6719429 |
Anamorphic illumination of micro-electromechanical display devices employed in multimedia projectors
Micro-electromechanical display device (“MDD”)-based multimedia projectors ( 90, 120 ) of this invention employ an arc lamp ( 32 ), a color modulator ( 42 ), and anamorphic illumination systems...
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6715884 |
Visible light modifier and method
A visible light modifier and method provide a new visual display. A projection is generated by the visible light modifier that includes a monochromatic or chromatically separated light beam having...
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6712475 |
Housing and internal layout for compact SLM-based projector
A display system based on a spatial light modulator (SLM). Various embodiments of the invention all involve some sort of articulating element, such that the display system has a stow position that...
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6705734 |
Optic system of illumination for videoprojector
Illumination system for a videoprojector, which comprises a lighting lamp ( 1 ) emitting a light beam on a first optical axis (AB) and a projection lens ( 10 ) crossed by said light beam along a...
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6702447 |
Projection display system
A projection display system that can diminish ghost images is disclosed. The projection display system includes an illumination system and an image system. The projection display system has a light...
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6692129 |
Display apparatus including RGB color combiner and 1D light valve relay including schlieren filter
The optical system includes a plurality of light modulators, one or more combining filters, and an optical relay system including a filter. Each light modulator modulates a corresponding incident...
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6665048 |
Method for imaging a continuously moving object
A continuously moving object is imaged by a video projector producing a rapid sequence of stationary images. A galvanometer actuated mirror tracks the motion of the moving object and synchronizes...
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6652105 |
Reflective light valve-based multimedia projector employing a patterned-silvered mirror
Multimedia projectors ( 90, 120 ) include a light source ( 32 ) for propagating illumination through a color modulator ( 42 ) and a light integrating tunnel ( 94 ). Lenses ( 100, 106 ) image the...
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6644816 |
Display device having a cylindrical projection surface such that an image projected onto the inside is visible on the outside
The invention relates to a display device for displaying visual information, comprising: at least one image-forming element; at least one light source for generating a light beam, which in...
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6634755 |
Illuminating device and projector
In an illuminating device in which a light from a light source is separated into three color lights differing in optical path from one another by a color separating system, and light modulating...
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6626542 |
Reflection type projection optical system
A bright reflection type projection optical system is used for projecting onto a screen under magnification a luminous flux carrying image information from a light valve driven by an image signal,...
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6619802 |
Multi-stripe scrolling for color projection
A multi-stripe scrolling apparatus has a beam splitter ( 13 ) that internally reflects white light onto a movable array of holographic elements ( 30, 32, 34 ) that respectively emit three different...
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6619804 |
Optical engine for front or rear screen SLM display systems
An optical engine (15) for an SLM-type display system, which may be either a front or rear projection system ( 10, 20 ). The optical engine ( 15 ) provides for a high contrast, telecentric...
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6609798 |
Digital light projection system
A digital light projection system is provided that includes a light pipe for generating and outputting a light beam. An input mirror is provided that is configured to receive a light beam from the...
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6601959 |
Projector device wherein the incidence angle of the illumination light is made variable depending on whether the projector device is in a used or unused state
The thickness of the projector device can be reduced by making the direction of irradiation of a digital micromirror device (DMD) with illuminating light by an illuminating optical system variable...
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6595648 |
Projection display
A projection display comprising: a transmissive spatial light modulator ( 10 ); an illuminator ( 1, 20, 21, 30 ) for illuminating the modulator from the front thereof; and a hologram ( 32 )...
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6585380 |
Illumination apparatus and projector type display apparatus using the same
An illumination apparatus comprises a plurality of light source sections, an integrator section, and a mirror element. Each light source section is constituted by a luminous body and a reflector...
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6580471 |
Projecting images
An “extra-folded” projection display system includes a selectively reflective material (e.g., a linear reflecting polarizer) placed immediately behind the system's imaging screen. The display...
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6575580 |
Lighting system and projection type display unit using thereof
A lighting system comprising converging means ( 1, 2 ) for converging a light emitted from an illuminant to form a converged image, a light mixing element 3 for having an end face of incidence ...
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6572232 |
Image projection system
An image projection system comprises an image projector, such as a film or television projector and a projection screen. The projection screen is fabricated of a substantially transparent material,...
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6561656 |
Illumination optical system with reflecting light valve
An illumination optical system comprises a light source lamp ( 1 ), a light mixing element ( 3 ) for mixing light emitted from the light source lamp ( 1 ), a DMD element ( 5 ) having a plurality of...
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6558007 |
Illumination optical system and image projection apparatus
An illumination optical system has a light source, an integrator for making the intensity distribution of the light from the light source even, and a relay optical system for imaging the light from...
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6558005 |
Projection display device comprising an integrator device provided with a tunnel prism
Projection display device which comprises a light source for generating a light beam, integrator means for converting the light beam into a uniform rectangular beam, modulator means for modulating...
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6554434 |
Interactive projection system
An interactive projection system for displaying an image on a planar surface includes a base, a projector, a convex mirror, and at least one support. The base is disposed on the planer surface. The...
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6547400 |
Light source device, optical device, and liquid-crystal display device
A light source device, comprising a light guide block that is provided with an inner wall capable of reflecting light and is shaped as a hollow component to form a light guide, and a point light...
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6543900 |
Projection apparatus
The present invention provides a projection apparatus utilizing plural light sources, in which the light source principally irradiating the light valve is switched by moving the relative position...
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6545814 |
Optical architectures for combining multiple lamps in light valve projectors
An integrating rod ( 100 ) for combining light beams from two or more sources. A first light beam ( 104 ) enters the integrating rod 100 through a first entrance face ( 102 ) to a first...
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6533423 |
Projection type display device with image pickup function and communication system
A projection type display device including an image pickup device is provided. A projection mirror of an OHP is made a half mirror 108, so that a picture having transmitted through the half...
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6527396 |
Optical device as well as projector unit and rear projector system using the same
An optical device including an illuminant for emitting light; light condensing element composed of a reflecting mirror whose shape of reflecting plane is of rotational secondary curved surface and...
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6527397 |
Projector
All of optical elements constituting a projecting optical system 10 are reflection mirrors 1 to 4. The reflection mirrors 1 to 4 are arranged in a plate-shaped support member 6 with a...
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6523960 |
Light source device and projector using the light source device
The invention provides a light source device of an easy maintenance, and a projector using the light source device. The light source device includes a light source lamp, a reflector, a lamp housing...
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6517211 |
Illumination device for projection-type display and projection-type display apparatus
The illumination device has a simple structure and a small size, can obtain a sufficient illumination light amount, and can improve illumination ability, with high reliability and high performance...
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6517210 |
Shortened asymmetrical tunnel for spatially integrating light
A multimedia projector ( 30 ) includes a light source ( 32 ) producing a nonuniform illumination pattern and a light integrating tunnel ( 110, 130 ) having parallelogram-shaped input and output...
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6499846 |
Projection system with projector and deflection mirror
In a projection arrangement with a projector and a deflecting mirror in which the image projection, proceeding from a projection direction along a principal projection axis impinges on the...
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6494583 |
Mirror adjustment mechanism for liquid crystal projector
An adjustment mechanism for a mirror of a projector is provided. The adjustment mechanism includes a supporting portion for supporting the mirror and an adjusting device. The supporting portion...
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6485147 |
Projection system and method of automatic focus
A projection system includes a total reflection element, an image reader, an analysis system and a server device. The image reader reads a projective image guided by the optical projection device...
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