Abstract: A projector for use with a light source and including a shutter assembly having a multiplicity of pixel light valves and a color separator disposed intermediate the light source and the shutter assembly and spaced therefrom and providing a plurality of spatially separated differently colored light beams, wherein the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves.

Abstract: A projector for use with a light source and including a shutter assembly panel having a multiplicity of pixel light valves overlying an array of interspersed shutter pixels each of which transmits only one of a plurality of colors, and a color filter disposed intermediate the light source and the planar shutter and spaced therefrom and having an array of interspersed filter pixels, each of which only transmits only one of a plurality of colors, wherein the array of interspersed filter pixels is in light and color registration with the array of interspersed shutter pixels, such that generally light of a given color impinges on a shutter area of the same color.

Abstract: There is provided a multilayer liquid crystal display of the twisted nematic type which comprises at least two liquid crystal layers and at least three polarizers, the sequence of which is described in detail. The device of the invention is characterized by an extremely high contrast ratio and makes possible very fast switching which is of importance for many applications. When a sequence of more than two liquid crystal layers, with a required number of polarizers is used, very high contrast ratios can be attained.

Abstract: An arrangement for propelling liquids over long distances involves enclosing liquid in a plurality of thin plastic spheres having a dimpled surface. The liquid containing spheres are propelled over substantial distances by shooting them from a pipe by means of compressed air.

Abstract: There is provided a transparent substratum structure for use in the construction of large-size liquid crystal displays, consisting of a triple layer structure of a thick transparent sheet, a resilient elastic layer, and a thin glass plate bonded to said elastic layer. The sheets may be bonded by a transparent elastic glue, and the thin glass plate is generally about 0.1 to 0.6 mm thick.There are also provided large-size back-to-back twin liquid crystal display panels consisting of two outer transparent thick sheets and two thin glass sheets separated by a thin elastic transparent layer with liquid crystal layers between said thick and thin plates, forming an integrated structure, with a polarizer between the thin glass plates, in addition to the resilient layer.

Abstract: There is provided a multicolor liquid crystal display comprising an integrated multilayer arrangement of the sequence: thick transparent plate, color filter, thin glass plate, liquid crystal, and thick glass plate, there being provided a transparent electrode pattern corresponding to that of the filter pattern, which electrode patterns are applied to the two surfaces which face the liquid crystal. The order of thickness of the thin glass plate is generally about 0.2 mm or less, and up to about 0.3 mm. The color filter may be in the form of a pattern of colored stripes or dots; there can also be used a multicolor filter comprising a pattern of stripes or dots of dichroic transmissive polarizing material, in conjunction with a polarizer applied to the rear plate of the device.

Abstract: A large liquid crystal display panel, assembled from many smaller sized liquid crystal panels, each carrying a small portion of a larger character or image. The liquid crystals panels may be carried on a common support. For providing the liquid crystal panels, with changeable colors, a new shape of an electrode-matrix is proposed, which have on one inside surface of the liquid crystal panel, electrodes in the form of the desired character or image and on a second inside surface, electrodes in the form of narrow strips, which are disposed on coated narrow strips of different colors. The energization of the electrodes is electronically controlled to effect the appearance of characters or images in different, changeable colors. The large liquid crystal panels can be transmissive, reflective or transflective.