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7611247 |
Illumination aperture for projection display
An optical system and method of increasing the contrast of a projected image. The optical system ( 1800 ) comprises a combination of aperture stops ( 1810, 1812 ) in at least one of the...
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7607784 |
Light emission method, light emitting apparatus and projection display apparatus
In a light source emitting single-color light represented by a solid light source such as a light emitting diode, a light output is increased while a color reproducibility is maintained. A red, a...
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7600874 |
Pixelated color wobulation
A display system includes a mechanism to provide for simultaneous pixelated color with a spatial light modulator. Also included is a mechanism to project the simultaneous pixelated color to create...
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7593160 |
Method of compacting optical systems comprising multiple optical channels into confined spaces
The present invention is a method of compacting an optical system comprising multiple optical channels. The method comprises providing one or more beam splitters and a plane mirror located one...
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7581841 |
Luminance correcting apparatus, luminance correcting method, and projector
A luminance correcting apparatus has a sensor for detecting luminances of reflected lights of projected lights individually in each of at least two colors which are reflected from a screen, a first...
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7581837 |
HDR displays and control systems therefor
A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the...
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7573644 |
Light pipe assembly including a plurality of lenses and related projector system
A light pipe assembly includes a lens set and a holder. The lens set includes a first lens, a second lens, a third lens, and a fourth lens. The first lens has a first surface and a fifth surface...
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7568804 |
Highly efficient single panel and two panel projection engines
Single imager projection systems suffer from low light throughput, compared to three imager systems, because only one color band is illuminated at any one time. As a result, there is a need to...
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7567384 |
Method and apparatus for combining light paths of like-colored light sources
Embodiments of this invention include a system, method and apparatus for transmitting like-colored illumination bundles along a common optical axis.
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7562988 |
Two-dimensional image display device
A two-dimensional image display device having a center wavelength of a red color source set in a range from 635 nm to 655 nm and having a center wavelength of a blue light source set in a range...
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7559653 |
Stereoscopic display apparatus using LCD panel
A stereoscopic imaging apparatus ( 200 ) has an illumination source ( 110 ) providing polarized illumination beams and at least one uniformizing element ( 22 ) for uniformizing first and second...
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7556382 |
Illuminator that outputs linearly polarized light and that is suitable for use in microdisplay based light engine applications
A hollow sphere with a scattering (e.g., white diffusive) interior surface directs light input from at least one input light source to an exit. The exit has a reflective polarizer that passes light...
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7553024 |
Image display device
An image display device includes a light source which outputs a first light including a first color light, a second color light and a third color light, a polarity converter which unifies...
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7549757 |
Device and method for adjusting color wheel index
A device and method for adjusting a color wheel index is provided. The method according to an embodiment includes adaptively controlling a color wheel index according to a user's selection of a...
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7548672 |
Fiber-based light source device
The present invention provides a fiber-based light source device, which includes a plurality of first, second or third light-emitting devices for respectively emitting a plurality of first, second...
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7547114 |
Multicolor illumination device using moving plate with wavelength conversion materials
A multicolor illumination device using an excitation light source and a multi-segmented moving plate with wavelength conversion materials (e.g. phosphors) is disclosed. The exciting light source is...
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7547103 |
LCoS display system with software/firmware correction enabling use of imperfect LCoS chips
A LCoS projection display system using two LCoS chips and a variable color filter.
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7546025 |
Media projector system
A system comprising a media player configured to play media content, a projector operatively coupled to the media player, and a control unit operatively coupled to the media player and the...
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7537346 |
Display having integrated light emitting material
Viewable images may be displayed from a substantially dark substrate. Light emitting material may be integrated into a substantially dark substrate. The light emitting material may be configured to...
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7532407 |
Projection display
A projection type image display apparatus is provided which includes a housing to hold an optical system including multi-lenses, a polarized-light conversion element and the color separation...
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7530693 |
Single MEMS imager optical engine
An optical engine for use with MEMS microdisplay devices is disclosed that comprises a collection stage module, an imaging stage module featuring polarization based imaging prism assemblage, and a...
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7528359 |
Projector
A projector includes a light source, an illumination optical system, and a color separating optical system. The color separating optical includes a dichroic mirror which reflects a first color...
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7527381 |
Optical system architecture
A projection system is disclosed that has a chromaticity/luminosity module in serial optical communication with a luminosity module. The chromaticity/luminosity module has a pair of...
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7520617 |
Reflection type projection display apparatus
One of preferred embodiments according to the present invention provides a reflection type projection apparatus that includes wire grid polarizers provided respectively for red (R), green (G) and...
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7518570 |
Method and apparatus for miniaturizing digital light processing displays using high refractive index crystals
A digital light processing display system is provided with fewer major moving parts and a smaller form factor. A high-intensity, high-frequency strobe light is used to direct a pulse of light...
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7517095 |
Image display apparatus
Image display apparatus comprising a projector, at least one primary modulator ( 4,6,8 ) for modulating light, an auxiliary modulator ( 36 ) for modulating the light modulated by the primary...
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7513624 |
Method and apparatus for controllably modulating a laser in a laser projection display
A laser projection device suitable for displaying full color images is disclosed. The LPD includes a variety of techniques for modulating laser beams produced by one or more lasers with image data...
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7511889 |
Color separation/combination prism and image-projection apparatus
A color separation/combination prism is disclosed which has an optical film arrangement capable of performing color separation, light analysis and color combination. The prism includes four prism...
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7511771 |
Color image projection system and method
An image projection system projects an image on a projection screen having phosphor particles for converting incident violet light into green light which, together with red and blue light, creates...
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7510284 |
Projection-type display devices including redundant laser sets
Described herein are display devices that provide projection-type video output and use redundant sets of lasers to generate light. The laser set produces a desired amount of light, e.g., for a...
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7506985 |
Projection light source having multiple light emitting diodes
A light source comprises a plurality of light emitting diodes arranged around the perimeter of a reflective optical element, wherein each of the light emitting diodes selectively generates a light...
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7503657 |
Color separation and synthesis systems, color separation systems and color synthesis systems, illumination optical systems, projection optical systems, and projection display devices using these systems
Color separation and synthesis systems, color separation systems and color synthesis systems, illumination optical systems, projection optical systems, and projection display devices using these...
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7499218 |
Illumination system
An illumination system including at least one first light source, a prism and a light uniforming device is provided. The first light source is capable of providing a first beam. The prism is...
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7497577 |
Light modulator assembly
A projection assembly includes a dichroic beam splitter having first and second crossed dichroic surfaces, at least one interference type light modulator panel optically coupled to the dichroic...
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7497576 |
Projection display
A projection display is disclosed. The present invention can eliminate the reflective light on the internal optical surface of the optical system, using the phase plate and linear polarizer, in the...
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7480013 |
Projection type display apparatus
One of preferred embodiments of a projection type display apparatus comprises a housing including a first surface inclined at an angle of 45 degrees with respect to an optical axis of the incoming...
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7475993 |
Light scanning device and image display device
A light scanning device includes: at least four light sources that provide light beams having different wavelength spectra; and a scanner that scans the light beams from the light sources in a...
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7475992 |
Light recycler and color display system including same
A light recycler for use in color projection display systems. The light recycler redirects light reflected by a color wheel of the projection system to increase the light output of the projection...
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7470028 |
Image projection device and method
A device for forming an image on a screen is described that comprises a coherent illumination means, an electrically addressed spatial light modulator means located in the path of light from the...
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7467885 |
Light source
A light source, such as for a projection system, having a plurality of semiconductor chips and at least two different, electromagnetic-radiation-emitting chip types with different emission spectra,...
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7466368 |
Image projection apparatus and adjusting method used for the same
An image projection apparatus includes a first reflection type liquid crystal display device for modulating and reflecting red light, a second reflection type liquid crystal display device for...
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7465053 |
Projection type video display unit and illuminating device
A lens array wheel 4 receives light irradiated in a direction parallel to its rotation axis, to cyclically deflect the light. On each of liquid crystal display panels 7 R, 7 G, and 7 B, the...
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7461940 |
Illumination system for displaying images without color break
The invention concerns an image display system comprising: a light source emitting an illuminating laser beam, a spatial light modulator controlled by control video signals corresponding to a...
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7458687 |
High efficiency digital cinema projection system with increased etendue
A digital cinema projection apparatus having an illumination source with a first etendue value for providing polarized polychromatic light. A first lens element lies in the path of the polarized...
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7455411 |
Projection-type display device
A projection-type display device includes a light source, a spatial light modulation element which modulates incident light according to an applied image signal and emits the modulated light, an...
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7453475 |
Optical display device, program for controlling the optical display device, and method of controlling the optical display device
Exemplary embodiments of the invention provide an optical display device that modulates light from a light source in two stages through an optical modulator and a luminance adjusting element to...
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7452086 |
Light pipe based projection engine
A light pipe based projection engine includes a X-prism transmitting substantially light of a useful polarization in an output direction and reflecting substantially light of a non-useful...
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7452082 |
Excitation light emission apparatus
In accordance with embodiments, viewable images can be created in glass. Viewable images may be created in glass by using a projector which projects ultraviolet light to excite light emitting...
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7448755 |
Three-panel projection display apparatus for displaying color images
A three-panel projection display apparatus displays a color image by separating light emitted from a light source into lights of three primaries, i.e., red, green, and blue, with dichroic mirrors,...
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7445341 |
Four panel liquid crystal display system
A microdisplay projection system employs blue, red and green LED illuminators. Optics are provided to direct light from the blue LED illuminator to a blue LCD panel, to direct light from the red...
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