Abstract: A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon, in which the void ratio of said stimulable phosphor-containing resin layer is reduced in comparison with an ordinarily prepared stimulable phosphor-containing resin layer having the same binder-phosphor ratio and formed by a coating procedure conducted under an atmospheric pressure.The void ratio is not more than 85% of the void ratio of the ordinarily prepared stimulable phosphor-containing resin layer in which a resinous binder and a stimulable phosphor are contained in a weight ratio of 1:1 to 1:25, the ratio of 1:25 being exclusive, and the void ratio is not more than 90% for a stimulable phosphor-containing resin layer in which a resinous binder and a stimulable phosphor are contained in a weight ratio of 1:25 to 1:100.

Abstract: A novel composite of liquid crystal droplets having a diameter of no more than 0.1 micron dispersed in a synthetic resin matrix is disclosed. The novel material does not scatter light to any appreciable degree.

Abstract: This invention provides novel sidechain liquid crystalline polymers which exhibit nonlinear response, and which have utility as a transparent nonlinear optical component in optical light switch and light modulator devices.

Abstract: Optical modulation is effected by heating a monomolecular film or a built-up film of monomolecular layers.

Abstract: The invention relates to novel paranitroaniline derivatives usable in non-linear optics and electrooptics, as well as to the preparation process for the same. These derivatives are in accordance with formula (I): ##STR1## in which one or more of the hydrogen atoms are optionally replaced by deuterium atoms. They are prepared by reacting one of the two pure optical isomers of 2-(hydroxymethyl)-pyrrolidine with a parahalogenonitrobenzene.The optically pure derivatives can be used in optical or optoelectronic devices.

Abstract: A process for recording, storing and displaying optically readable information on a support using a polymer mixture P as the information carrier, wherein P comprises at least two different, mutually compatible polymers P.sub.1 and P.sub.2, and has a lower critical solution temperature (LCST), the optically differentiable modification of the information carrier being brought about by phase transition from a compatible polymer mixture below the LCST to demixed polymers P.sub.1 and P.sub.2 above the LCST or the reverse of this transition.

Abstract: This invention provides organic solid solutions which exhibit nonlinear optical properties.Illustrative of the invention is an optically clear solid solution of poly(N,N-dimethylacrylamide) and 13,13-di(n-hexydecylamino)-14,14-dicyano-4,5,9,10-tetrahydropyrenoquinodim ethane.

Abstract: Devices for and method of generating coherent second harmonic light radiation. The devices comprise a laser source of coherent light radiation at a fixed fundamental frequency, a crystalline N,N'-substituted barbituric acid that crystallizes in a non-centrosymmetric configuration, means for directing the output radiation of the laser onto the N,N'-substituted barbituric acid, and output means for utilizing the second harmonic frequency.

Abstract: In one embodiment this invention provides a high performance nonlinear optical substrate which comprises a transparent organic polymer film containing an array of charge asymmetric molecules such as 13,13-diamino-14,14-dicyanodiphenoquinodimethane: ##STR1##

Abstract: An electro-optical dipolar suspension is described which is silvery-reflective at no voltage, which becomes black-opaque at small voltage, and transmittive at an increase of voltage. Such a dipole suspension is useful in displays because of greater contrast, decreased operating voltage, power, and cost.

Abstract: A photochromic and/or cathodochromic sodalite material according to the invention represents a transparent monolith with a homogeneous polycrystalline structure and has a density in excess of 99% of the theoretical density of sodalite with an identical chemical composition. Such material is prepared by hot moulding of the sodalite powder obtained by any method under conditions preventing intense evaporation of alkali halides and incongruent melting of the sodalite. The sensing element of the prepared material is made in the form of a plate with its thickness chosen according to the desired sensitivity of radiation registration and the desired contrast ratio of the image stored as the sensing element is in transparent mode of operation.

Abstract: An electrooptical solid element comprises a formed resin composition comprising a low molecular polar substance having a Kerr type electrooptical effect, and an organic polymer substance compatible with the low molecular polar substance. The formed resin composition is prepared by a method such as melt mixing on rollers, or dissolution in a common solvent followed by evaporation of the solvent. This formed resin composition is prepared in various shapes such as a polygon, a film, a prism and a polygonal pole. At least a pair of electrodes are provided on the surfaces of the formed resin composition, and further at least one of the electrodes may can be made of a transparent material.

Abstract: A light-polarizing perhalide of an alkaloid acid salt having incorporated in its molecular structure a chloride, bromide, or iodide of calcium, rubidium, cesium or bismuth, and a light valve containing a suspension of particles of such perhalide.

Abstract: In a light valve, comprising a cell containing a suspension of particles in a liquid suspending medium, the improvement wherein said light valve suspension comprises particles of a perhalide of an alkaloid acid salt or a light-polarizing metal halide or perhalide suspended in said liquid suspending medium and a protective polymer effective to inhibit agglomeration of said particles dissolved in said liquid suspending medium, said liquid suspending medium comprising an electrically resistive, inert, low molecular weight, liquid fluorocarbon polymer having a specific gravity at room temperature of at least about 1.5 and having at least about 50% of its atoms constituted by halogen atoms, at least 60% of said halogen atoms being fluorine and the balance chlorine and/or bromine, and an electrically resistive organic liquid miscible with the fluorocarbon liquid, said fluid suspending medium being operable to suspend said particles in substantial gravitational equilibrium.