407 results about "Pixelation" patented technology

A projection display system includes a projection lens assembly that has multiple projection lens elements that are configured to receive light imparted with display information by a pixelated display device. The projection lens elements project the light toward a display screen. A pixel-shifting element is included within the projection lens assembly to cyclically shift between at least two positions within the projection lens assembly to form at a display screen at least two interlaced arrays of pixels. An electromechanical transducer is coupled to the pixel-shifting element to impart on it the cyclic shifting between positions.

An intraocular camera for retinal prostheses may include an optical imaging system comprising a set of optical elements for forming an image of the external world on an image sensor array, wherein the optical elements and the image sensor array may be enclosed in an implantable biocompatible housing that may employ haptic elements for stabilization within the eye. The set of optical elements may be designed to have a short focal length and to provide adequate resolution images that can be transformed into a set of stimulation signals applied to a pixellated microstimulator array. Transmission of the signals from the intraocular camera to a microstimulator driver circuit may be accomplished either by a wired or wireless communication device. Power and control signals may be provided to the intraocular camera by a wired or wireless communication device, or optically by means of ambient illumination or an optical beam.

Projection lenses for use with pixelized panels (PP) are provided. The projection lenses have first and second lens units (U1,U2), with the first lens unit having a negative power and the second lens unit having a positive power. The first lens unit has a first lens element (L1) having a generally meniscus shape and a second lens element (L2) having a biconcave shape when its surface configurations are described by best fit spherical surfaces. The second lens element (L2) has an Abbe number (vL2) which is (a) less than or equal to 55 and (b) less than the Abbe number (VL1) of the first lens element (L1). The second lens element (L2) also has an optical power (φL2 / 0.7CA) at 0.7 of the clear aperture of its short conjugate surface which is negative and has a magnitude which is greater than the second lens element's on-axis optical power (φL2). This combination of lens shapes, Abbe numbers, and optical powers provides higher order lateral color correction without the need for abnormal partial dispersion glasses.

A method forms patterns on a substrate by exposing the substrate a first time and exposing the substrate a second time using a mask containing gray-tone features. The gray-tone features locally adjust an exposure dose in regions corresponding to features defined in the primary exposure. Moreover, the gray-tone features enable the forming of features having different critical dimensions on a substrate. The gray-tone features may be sub-resolution features and formed by pixellation. The trim mask containing gray-tone features may have regions with different transmissivities.

An autostereoscopic display comprises a pixelated display panel comprising an array of single color pixels or an array of sub-pixels of different colors and a view forming arrangement comprising an array of lens elements. The pixels form a hexagonal grid, and the lenses also repeat in a hexagonal grid. A vector p is defined which relates to a mapping between the pixel grid and the lens grid. Regions in the two dimensional space for this vector p are identified which give good or poor banding performance, and the better banding performance regions are selected.

A liquid crystal display (LCD) panel construction for producing color images for viewing by a viewer. The LCD panel construction comprises: an illumination panel for producing light including spectral components with wavelengths in a visible band of the electromagenetic spectrum; a plurality of pixel regions within a predefined image display area, wherein each pixel region has a plurality of subpixel region and each said subpixel region within each pixel region has a light transmission portion and a light blocking portion, and each light transmission portion and light blocking portion has a frontside disposed in the direction in the viewer and a backside in the direction of the illumination panel. The illumination panel illuminates the plurality of pixel regions from the backside thereof so that a color image is formed the said plurality of pixel regions for viewing. A pattern of broad-band reflector material is disposed in spatial registration with the backside of the light blocking portions of the subpixel regions, for reflecting produced light at structures associated with the light blocking portions of the subpixels, thereby recycling produced light for use in illuminating said plurality of pixel regions. A pattern of broad-band absorption material is also disposed in spatial registration with the frontside of the light blocking portions of the subpixel regions, for absorbing ambient light incident upon structures associated with the light blocking portions of the subpixels, thereby reducing glare at the surface of the LCD panel due to ambient light incident thereon.