Abstract: This invention relates to a system (100) for adaptively driving a coloured liquid crystal display (102) displaying a sequence of images. The system (100) comprises driving electronics (106) for supplying a driving voltage for each pixel in the display (102), a frame memory (116) for storing a first image of the sequence of images, which first image is presently displayed on said display (102). In addition, the system (100) comprises a look-up table (110) for generating a pre-write signal (108) for the driving electronics (106) based on the first image in the frame memory (116) and a subsequent image to be displayed on the display (102).

Abstract: A light source (100) includes a plurality of light emitting devices (101), each of which output light that is collimated by a first focusing structure (103). The collimated light is input to second focusing structure (104), which focuses light from the light emitting devices as a single beam that is substantially homogeneous. The light source may be used in an LCD display, a projection system, a television system, or a computer monitor, to name a few applications.

Abstract: A beam-shaping optical element employing an aspherical profileis presented to minimize aberration. A beam-shaping optical element according to the present invention includes an entrance surface and the exit surface, both having a non-circular cross-section in any plane comprising the optical axis. A beam-shaping optical element according to one embodiment of the present invention, has the optical axis coinciding with the Z-axis of a three-axis rectangular XYZ system of coordinates, and the entrance surface and/or the exit surface represented by a mathematical equation comprising a term representing a non-rotationally symmetric aspherical profile, at least one correction term comprising a function of variable X alone and at least one correction term comprising a function of variable Y alone.