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7611246 |
Projection display and optical integrator
A projection display makes it possible to minimize the costs of a polarization conversion element, and concurrently makes it possible to improve illuminance nonuniformity and optical utilization...
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7607780 |
Projection-type 3-D image display using single projector
A projection-type 3-D image display includes a light source, a single display element, an image shift member, a projection lens unit, and a screen unit. The display element produces an image using...
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7599069 |
Vector beam generator using a passively phase stable optical interferometer
Provided are techniques for generating optical vector beams (e.g., radially and azimuthally polarized light) using passive or active phase stable optical interferometry. Techniques may split an...
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7597446 |
Illumination optical system and image projection apparatus
An illumination optical system is disclosed which capable of uniformly illuminating a surface to be illuminated. The illumination optical system comprises a polarization conversion element which...
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7585078 |
Illumination system capable of eliminating laser speckle and projection system employing the same
Provided are an illumination system capable of eliminating laser speckle and a projection system employing the illumination system. The illumination system includes a laser light source having at...
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7576313 |
Light source device and image display device
A light source device includes at least two light emitting parts which emit light; and a polarization separating part which transmits polarized light in a first vibrating direction of the lights...
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7575326 |
Projector
A projector having a first lens array with a plurality of first lenses in a plane substantially orthogonal to an optical axis of the light beam from a light source that divides the light beam into...
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7575325 |
Image displaying apparatus and color separating-combining optical system
An image displaying apparatus is capable of maintaining the contrast ratios of displayed images even if the f-value of an optical system of the apparatus is lowered to provide bright images,...
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7572013 |
Projection display
A projection display uses reflective liquid crystal display elements for each color light to prevent ghost image. A λ/4 wave plate is disposed between a crossed dichroic prism assembly for color...
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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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7566135 |
Light tunnel of DLP projection system
In order to provide a light transmitting space to reinforce an intensity of a light tunnel in a DLP projection system, and increase an heat-resistance, provided is a light tunnel of a DLP...
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7562984 |
Polarizing beam splitter and projection apparatus having the same
A polarizing beam splitter comprising a multilayer film formed by alternately laminating a plurality of H layers and a plurality of L layers having a relatively lower refractive index than a...
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7559654 |
High luminance display apparatus using LCD panel
A projection apparatus ( 10 ) has an LC modulator panel ( 60 ) with photoresponsive layer ( 316 ), segmented into a first, second, and third portion, each spatially separated. An image writing...
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7556383 |
Projection display apparatus using liquid cooling and air cooling
A projection display apparatus comprises a liquid crystal unit assembly which includes a liquid crystal panel, an incident side polarizing plate and an emitting side polarizing plate which are...
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7553025 |
Projection type image display apparatus, and optical unit and polarization splitting unit each used for the apparatus
A polarization splitting section has a structure in that a polarization splitting layer is formed of a light reflecting grid member which is arranged in a grid-shaped pattern on an...
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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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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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7543945 |
Integrator module with a collimator and a compact light source and projection display having the same
A projection display includes three illumination units to emit red, green, and blue beams, at least one optical modulator to modulate the red, green, and blue beams to be suitable for image data,...
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7542206 |
Light collectors for projection systems
Disclosed herein are light collectors for use in projection applications. The light collectors gather light from surface emitting sources (e.g., LEDs) of differing color (or same color in some...
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7542194 |
Birefringence-compensated liquid crystal display and projection system using same
A projection system includes an image-forming device and a polarizing beamsplitter. Illumination light illuminates the image-forming device via the first polarizing beamsplitter. A retardation...
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7540616 |
Polarized, multicolor LED-based illumination source
Light emitting diodes (LEDs) emit light at a first wavelength. A phosphor material close to LEDs converts at least some of the light to a second wavelength. The light at both wavelengths passes...
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7533996 |
Contrast adjustable projector apparatus
A contrast adjustable projector apparatus including a body, a light source, an illumination unit, a lens assembly and a regulation device is disclosed. The light source is disposed in the body for...
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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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7529024 |
Polarization conversion system and illumination module
A polarization conversion system includes at least one beam splitting and combining unit having a polarization beam splitting element and a dichroic element, a dichroic unit, a polarization beam...
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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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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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7513625 |
Optical device and projector
A projector including: a light source device; an optical device including, an optical modulator that modulates a luminous flux from a light source in response to image information, an optical...
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7511783 |
Optical laminated bodies, lighting equipment and area luminescence equipment
Lighting devices are disclosed that include optical laminated bodies. An exemplary optical laminated body includes a polarizing layer, a first transparent film disposed closely to a front surface...
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7511773 |
Polarized light conversion apparatus
A polarized light conversion apparatus comprises a polarization device, a light source, a reflection device and a phase changing device. The polarization device includes a light-transmissible body...
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7507006 |
Fixing structure
A lamp receptacle of a projection apparatus includes a receptacle body defining a receiving space, and having a peripheral wall and an upper opening. The peripheral wall is formed with an aperture....
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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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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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7495831 |
Optical device, display device, and three-dimension image display device for changing a polarization state of a light beam in time
An optical element, an optical device, and a display device are disclosed that are able to change a polarization state in time order and to produce polarized light with little wavelength dependence...
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7495830 |
Polarisation recuperation system
A polariser or a system for lighting using such a polariser in a polarisation recuperation system. The polariser comprises first and second polarising beam splitters ( 212 a, 212 b ) for splitting...
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7494223 |
Polarization conversion element, method of manufacturing the same and illumination source unit using the same
A polarization conversion device comprises a prismatic beam splitting assembly for separating p- and s- polarized polarized light orthogonal in the direction of polarization from a light source and...
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7484850 |
Illuminating device and projector
Aspects of the invention can provide an illuminating device and the like capable of efficiently supplying polarized light in a particular oscillation direction and suitable for a projector having a...
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7481538 |
Illuminator and projector
An illuminator includes a polarization converter that converts source light into first polarized light, a polarization separation member that separates the first polarized light of from 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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7475991 |
Polarizing beamsplitter assembly
An optical unit that includes a polarizing beamsplitter (PBS). The PBS includes a reflective polarizer that transmits a portion of a light beam that has a first polarization and reflects a portion...
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7472995 |
Wavelength-selective polarization conversion element, projection displaying optical system and image projection apparatus
A wavelength-selective polarization conversion element is disclosed, which is capable of reducing the number of optical elements in an optical system and simplifying the configuration thereof. 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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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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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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7445340 |
Polarized, LED-based illumination source
An illumination source includes a number of light emitting diodes (LEDs) operating at a first wavelength. Light from the LEDs illuminates a phosphor material that generates light at a second...
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7440158 |
Direct optical image projectors
An apparatus includes a reconfigurable spatial light modulator, a light source, and a transmission filter. The reconfigurable spatial light modulator is capable of producing spatially varying...
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7438421 |
Two-panel type projection system and projection method thereof
A two-panel type projection system includes a polarization light source to irradiate a polarized white light, a color selector to sequentially transmit two light components every predetermined time...
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7429111 |
Two-panel color management system
The invention provides a two-panel color management system for projection display applications, wherein color sequencing is accomplished using achromatic beam switching and static color separation....
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