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Patent No. 5307162

Cloaking System Using Optoelectronically Controlled Camouflage

A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.

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Class 359/449 - With reflector or additional screen


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter including another screen or a reflector which
No. of patents: 216
Last issue date: 05/01/2012


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NumberTitleIssue Date
8169698Dual movable projection screen structure
An integral, dual projection screen structure for displaying an image from a projection source. The projection screen structure comprises a frame; first and second movable projection screens disposed within the frame, each movable screen having an operable roller fo...
05/01/2012
8035894Transparent screen, projection display device, and image display method
A Fresnel lens screen 20 is comprised of a light entering surface partial total reflection type Fresnel lens 24, a first light diffusing part 26 disposed behind the Fresnel lens, and a first base 25. An image display element 30 dis...
10/11/2011
8014066Reflection-type projection screen
A reflection-type projection screen is provided having uniformly high gain over a wide range of viewing angles. The projection screen includes a dual-purpose light reflective, supportive substrate including at least one unpigmented flash-spun plexifilamentary film-f...
09/06/2011
7995273Dual projection screen structure
An integral, dual projection screen structure for displaying an image from a projection source. The projection screen structure comprises a frame; a fixed projection screen disposed within and mounted to the frame; a first masking panel disposed within the frame ove...
08/09/2011
7911692Screen and projection system
A screen includes: a substrate; and a first color material layer disposed on one surface of the substrate, wherein the first color material layer includes a first color material adapted to absorb light with a part of wavelengths of an incident light, and the first c...
03/22/2011
7898734Polarization preserving front projection screen
Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the discl...
03/01/2011
7830599Projection-type display apparatus and display method thereof
A projection-type display apparatus and a display method thereof are disclosed, the projection-type display apparatus including a coated portion which is formed on a surface of a substrate, and which scans a video onto a screen, and a patterned portion which is form...
11/09/2010
7826135Screen film for light projection brightness enhancement
A front-projection screen that includes a prismatic film that comprises an outside surface of the screen. The film includes parallel prismatic grooved lines. Each of the lines have a draft surface, a groove surface, and, each of the lines are located on a first side...
11/02/2010
7796331Laser image display device and laser image display screen
A laser image display device and a laser image display screen used for the laser image display device. The laser image display device is provided with a laser light source for emitting laser beams and a laser image display screen (10) for projecting the laser...
09/14/2010
7738170Projection system
Provided is a projection system capable of obtaining a sharp contrast without being influenced by an ambient light, the projection system including a projection screen, containing a substrate and a polarized light selective-reflection layer formed on the substrate t...
06/15/2010
7724432Rear-projection screen for projection video display system, method of rear-projection collimation and projection video display system incorporating the same
Various embodiments of a rear-projection screen, a method of rear-projection collimation and a projection video display (PVD) system. In one embodiment, a rear-projection screen includes: (1) a total-internal-reflection (TIR) fresnel lens configured to aim light rec...
05/25/2010
7719762Transmitting-reflecting projection screen, and projection system comprising the same
The present invention provides a see-through transmitting-reflecting projection screen excellent in transparency, capable of sharply displaying, on its both sides, identical or different images even under bright environmental light. A transmitting-reflecting ...
05/18/2010
7710645Selective reflecting for laser projector
A projection screen for selectively reflecting light from a front projector. The screen includes an etalon coating structure with a first layer of reflective material, a second layer of dielectric material, and a third layer of partially reflective semiconductor mat...
05/04/2010
7679823Reflective screen
A reflective screen which can reflect high contrast images even in a bright environment and can reflect images with superior image color reproducibility, in particular, images substantially free from color change of the images, even when the screen is observed from ...
03/16/2010
7649687Reflective screen
A reflective screen includes a light reflecting layer, and a light diffusing layer provided on the light reflecting layer. The light diffusing layer has the diffusion property that in one (A axis) of two perpendicular axial directions on a light diffusion plane, a l...
01/19/2010
7602549Screen and image projection system
A screen having two optical characteristics is realized in a compact structure. As a result, a structure is provided where two types of screen surface having different optical characteristics are formed on the same side of the same sheet, and wound in a single stora...
10/13/2009
7567380Rear projection display device having multiple mirrors that are substantially parallel to a screen
The ultra-thin rear projection display device described herein includes a wide angle lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. In one embodiment, the screen that has multiple groove angles to provi...
07/28/2009
7495828High contrast projection screen
An image display system includes a reflecting screen that has a reflecting surface. The reflecting surface includes micro-ridges having a plurality of reflecting ridge-surfaces wherein the reflecting ridge-surfaces constituting a Fresnel mirror whereby the reflectin...
02/24/2009
7480097Light diffusion sheet and method of producing the light diffusion sheet, and screen
A light diffusion sheet, a method of producing a light diffusion sheet, and a screen using the light diffusion sheet, are provided. The method of producing a light diffusion sheet includes transferring an uneven form of a surface of a mold to form a light diffusion ...
01/20/2009
7443583Screen and image projector using the screen
A projector screen having a simple configuration, which provides a wide field of view angle and can be used for both transmission and reflection projection is achieved. A screen according to the present invention is provided with a directional scattering layer that ...
10/28/2008
7443582Screen and image projection system using the same
In order to provide a screen having a projection surface on which of external light has little influence and has a large gain, as well as a projection surface that has a wide viewing angle and nature-views, the screen according to the present invention includes a di...
10/28/2008
7416306Laser projector
A reflection-type laser projector (100) projects modulated laser beams outputted from a laser projection unit (40), on a screen, wherein a reflector (112) as a constituent of the screen (110) has reflection characteristics of reflecting, ...
08/26/2008
7377656Projector
A projector of rear-projection type including a light source that outputs a laser beam and a scanner that scans a screen with the laser beam. When a laser beam with energy exceeds an accessible emission limit due to failure of the light source or the scanner, at lea...
05/27/2008
7365907Rear projection image display apparatus
A compact rear projection image display apparatus in which the projection distance in a projection optical system is substantially reduced and no reflection mirror is used, thereby eliminating a major cause of image trapezoidal distortion. The rear projection image ...
04/29/2008
7362502Surface reflection type metallic screen and method of manufacturing the same
A screen for displaying an image projected from a beam projector. The screen base is formed with an incombustible metal sheet having silver-white color for displaying an image projected from a light source with nature color. A polished surface is formed on the scree...
04/22/2008
7360906Projection 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 the first tubular portion at a side where one opening is formed. A m...
04/22/2008
7359118Method for producing mold for use in duplicating light diffusion sheet, light diffusion sheet and method for producing the same, and screen
A method of producing a mold for use in duplicating a light diffusion sheet is provided. The method includes a step of conducting sandblasting for blasting abrasive material from a blast gun to a surface of a mold base material to form unevenness in the surface of t...
04/15/2008
7349154Reflection type screen
The reflection type screen comprises a reflection layer which is disposed on the opposite side to the projected light incident side of the screen, a horizontal view angle increasing layer which is disposed on the light incident side of the reflection layer, and a di...
03/25/2008
7345818Screen, its manufacturing method and image display system
A projection screen comprises a red-reflecting particle layer, green-reflecting particle layer and blue-reflecting particle layer sequentially stacked on a substrate. In each particle layer, particles are accumulated by eleven cycles in a regularly alignment such as...
03/18/2008
7342721Composite dual LCD panel display suitable for three dimensional imaging
A three-dimensional imaging system and related methods is provided that utilizes a composite transmissive LCD panel. The composite LCD panel contains at least two layers of stacked liquid crystal cells positioned on top of one another relative to the imaging directi...
03/11/2008
7327517Optical multilayer film and reflective screen
An optical multilayer film and reflective screen are provided. An optical multilayer film includes an optical laminate A including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate A having a ref...
02/05/2008
7324276Front projection screens including reflecting and refractive layers of differing spatial frequencies
Projection screens include a substrate, a reflective layer on the substrate and a refractive layer on the substrate. The reflective layer includes reflective microstructures of about 5 μm to about 500 μm in size, and arranged in a first pattern to reflect light at...
01/29/2008
7317565Projection viewing system
A projection viewing system of simplified construction and high illumination efficiency, which enables at least two images varying with viewing directions to be simultaneously displayed in a viewable fashion. The system includes at least two display devices 1...
01/08/2008
7316482Reflecting mirror and projection image display apparatus using the same
The present invention is directed to the provision of a reflecting mirror that suppresses decreases in the resolution performance and contrast performance by decreasing the mean surface roughness. In a projection type image display apparatus including a projector le...
01/08/2008
7315294Deinterleaving transpose circuits in digital display systems
The present invention provides a method and apparatus of converting a stream of pixel data in space and time into a stream of bitplane data. In particular, the present invention converts the pixel data stream according to a predetermined output format. The apparatus...
01/01/2008
7315417Screen frame and bezel clip system
An apparatus and methods that facilitate efficient and easy installation of a display screen and protective shield onto a cabinet of a display unit such as a projection TV (PTV) and the like. Preferably, a screen frame and bezel clip system includes a bezel clip hav...
01/01/2008
7310185Double pass illumination system
A display device is disclosed, wherein the display device comprises a light source configured to emit light, a projection lens configured to transfer the light to a display surface, at least one other optical element, and a lens disposed optically between the light ...
12/18/2007
7304795Image projection with reduced speckle noise
An image projection module within a housing is operative for causing selected pixels in a raster pattern to be illuminated to produce an image on a display screen of VGA quality. The screen is modified and/or the bandwidth of a laser is increased, to reduce speckle ...
12/04/2007
7301699Display device having reflecting member with multiple reflecting surfaces
A display device includes a liquid crystal display (LCD) panel, a light emitting diode (LED), and a reflector. The reflector having the first, the second, and the third reflecting surfaces is arranged in the rear of an LCD screen of the LCD panel. The first reflecti...
11/27/2007
7300161Portable large scale projection display system
The present invention is a portable, configurable, inexpensive large scale projection system. The system is comprised of a plurality of projectors mounted on a structure and a display screen. The structure can be reconfigured to hold more or fewer projectors, and ca...
11/27/2007
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