| Patent application number | Description | Published |
|---|
| 20080204854 | Electrostatically-Controlled Diffraction Gratings Using Ionic Electrophoresis - A diffraction grating for which the intensity and/or direction of the diffracted light is electronically modulated using the electrophoresis of an index-modifying species. Index-modifying dye ions are dissolved in an electrophoretic medium maintained adjacent the diffraction grating. Application of a voltage across the medium moves many of the ions into the region adjacent the grating such that the ions absorb the incident light or otherwise modify the local index of refraction so as to change the optical characteristics of the diffracted light. Application of an opposite voltage across the medium moves many of the ions away from the grating, allowing light rays to diffract in a different manner when encountering the grating. | 08-28-2008 |
| 20080284677 | Modular Electronic Displays - Modular displays are made up of arrays of modules that include light sources and light modulators. The modules may include control circuits that perform some image processing functions. The modules may illuminate a screen directly or may include optical systems that project light onto a screen. | 11-20-2008 |
| 20080291362 | Diffuser for Light From Light Source Array and Displays Incorporating Same - An optical structure placeable between a backlight array of point light sources and a planar display. The structure distributes light emitted by the point light sources to uniformly illuminate the plane of the display, without introducing significant viewing parallax. The emitted light is partially collimated within a preferred angular viewing range, maximizing the display's luminance when viewed from the normal direction. The structure is highly reflective, such that a substantial portion of any non-emitted light rays are internally reflected by the structure, increasing the likelihood that those rays will be subsequently emitted by the structure. | 11-27-2008 |
| 20090034867 | ENHANCING DYNAMIC RANGES OF IMAGES - Methods and apparatus according to various aspects take as input image data in a lower-dynamic-range (LDR) format and produce as output enhanced image data having a dynamic range greater than that of the input image data (i.e. higher-dynamic range (HDR) image data). In some embodiments, the methods are applied to video data and are performed in real-time (i.e. processing of video frames to enhance the dynamic range of the video frames is completed at least on average at the frame rate of the video signal). | 02-05-2009 |
| 20090034868 | ENHANCING DYNAMIC RANGES OF IMAGES - Methods and apparatus according to various aspects take as input image data in a lower-dynamic-range (LDR) format and produce as output enhanced image data having a dynamic range greater than that of the input image data (i.e. higher-dynamic range (HDR) image data). In some embodiments, the methods are applied to video data and are performed in real-time (i.e. processing of video frames to enhance the dynamic range of the video frames is completed at least on average at the frame rate of the video signal). | 02-05-2009 |
| 20090046037 | HIGH RESOLUTION DISPLAY OF 3D IMAGES - A 3D display has a backlight, image panel, lens array, and aperture mask. The lens array has a plurality of converging lenses having optical axes perpendicular to the image panel. The aperture mask has a plurality of electro-optic elements. Each element is aligned closely proximate to a corresponding one of the lenses and is selectably switchable between “on” to permit passage of light rays through the element, or “off” to prevent passage of light rays through the element. The elements are arranged in subsets of adjacent elements. A controller electronically coupled to the image panel and to the aperture mask repetitively selects an electro-optic element in each subset, switches the selected elements “on”, switches all other elements in each subset “off”, and applies to the image panel a selected plurality of representations of an image, each representation corresponding to a plurality of different viewing directions of the image. | 02-19-2009 |
| 20090146582 | Colour rendering in compact fluorescent lamps - Compact fluorescent lamps (CFLs) are characterized by impaired colour rendering, due to their low illumination capability near the blood-red edge of the visible spectrum. Red light output by a light emitting diode (LED) has a relatively narrow spectral distribution, and LEDs are able to produce red light with reasonable efficiency. Blending the light output of a CFL with a small amount of blood-red light emitted by one or more inexpensive LEDs improves colour rendering, while reducing the overall energy cost of operating the CFL-LED hybrid lamp. | 06-11-2009 |
| 20090190237 | RETROREFLECTIVE OPTICAL COLLIMATION LAYER AND DISPLAY DEVICES INCORPORATING SAME - A display comprises a backlight comprising a plurality of individually-controllable light emitters, a light modulator comprising a plurality of individually-controllable elements, and, a retro-reflective optical layer positioned between the backlight and the light modulator. The retro-reflective optical layer is configured to pass light incident thereon at an angle with respect to a normal to the retro-reflective optical layer of less than a threshold angle φ, and reflect light incident thereon at an angle with respect to a normal to the retro-reflective optical layer of greater than φ in a direction opposite and generally parallel to an incoming direction of incident light. | 07-30-2009 |
| 20090262414 | IONIC ELECTROPHORESIS IN TIR-MODULATED REFLECTIVE IMAGE DISPLAYS - A reflective display having a plurality of transparent hemi-beads ( | 10-22-2009 |
| 20100085627 | MICROLENS-ASSISTED BRIGHTNESS ENHANCEMENT IN REFLECTIVE IMAGE DISPLAYS - A reflective display having a light reflector ( | 04-08-2010 |
| 20100128340 | BRIGHTNESS ENHANCEMENT BY FLUID INTERFACE DEFORMATION IN TIR-MODULATED DISPLAYS - A reflective display having a plurality of transparent hemi-beads ( | 05-27-2010 |
| 20100198562 | STRIPWISE CONSTRUCTION OF 3D CURVED SURFACES - A 3D structure approximating a 3D curved surface having non-zero Gaussian curvature over a portion of the surface. The structure is formed of a plurality of thin strips ( | 08-05-2010 |
| 20100205125 | IDENTIFYING INVENTION FEATURE PERMUTATIONS FOR A REASONABLE NUMBER OF PATENT APPLICATION CLAIMS - Permutations of features of an invention are ranked in accordance with factors such as importance and specificity to identify a reasonable number of (i.e. 20 or fewer) permutations as candidates for structuring a corresponding number of claims for a patent application. The identified permutations desirably include permutations corresponding to claims of broad scope, claims of narrow scope, and claims of intermediate scope; and exclude illogical or impractical permutations of features. | 08-12-2010 |
| 20100214282 | APPARATUS FOR PROVIDING LIGHT SOURCE MODULATION IN DUAL MODULATOR DISPLAYS - Dual modulator displays are disclosed incorporating a phosphorescent plate interposed in the optical path between a light source modulation layer and a display modulation layer. Spatially modulated light output from the light source modulation layer impinges on the phosphorescent plate and excites corresponding regions of the phosphorescent plate which in turn emit light having different spectral characteristics than the light output from the light source modulation layer. Light emitted from the phosphorescent plate is received and further modulated by the display modulation layer to provide the ultimate display output. | 08-26-2010 |
| 20100254010 | ADAPTIVE SUNLIGHT REDIRECTOR - Longitudinally adjacent plane mirrors ( | 10-07-2010 |
