Abstract: A stir-in fluorescent lamp phosphor is coated with a 1:1 ratio of latex polymer and fumed silica. The polymer-coated fluorescent lamp phosphor exhibits improved dispersability and wettability in aqueous and organic binder media which are used to apply fluorescent lamp phosphors to the inside walls of a fluorescent lamp envelope.

Abstract: Phosphor coatings for use in mercury discharge tubes and glass plates for illuminated signboards are provided by applying phosphor particles to a surface by means of a binder. The phosphor and an inorganic binder are suspended in a volatile fluid. The suspension is used to coat the surface. Evaporation at a temperature not exceeding 175.degree. C. is used to remove the volatile fluid.

Abstract: A luminescent sheet for stamps comprising a subtrate and a luminescent layer formed on the surface of said substrate, characterized in that said luminescent layer contains fine particles of an inorganic fluorescent pigment, said fine particles being prepared by providing a dispersion containing particles having a mean specific surface area Sw.sub.2 of said inorganic fluorescent pigment in water, and subjecting said dispersion to wet-grinding to obtain an aqueous dispersion containing fine particles having a mean specific surface area Sw.sub.1 of said inorganic fluorescent pigment, and said fine particles satisfying the equation: 2.0.gtoreq.Sw.sub.1 /Sw.sub.2 .gtoreq.1.05.

Abstract: Disclosed is a radiation image storage panel comprising a support and a compressed phosphor layer provided thereon which contains a phosphor and a binder of which 10 wt. %-100 wt. % content is thermoplastic elastomer. Further disclosed is a radiographic intensifying screen having the same structure as the above radiation image storage panel. The processes for preparation of the radiation image storage panel and the radiographic intensifying screen are also disclosed.

Abstract: A fluorescent screen includes a substrate made of a light-scattering material and a mixture of an organic fluorescent substance and a binder dispersed therein. Since the luminescent light is scattered by the light-scattering material, the light emitted from the screen is increased to a level higher than that of a conventional fluorescent screen to enhance brightness thereof.

Abstract: A method is provided for improving the optical performance of fluorescent coatings. The appearance of fluorescent coatings is improved by the use of hollow polymer particles which scatter ultraviolet light and shorter wavelength visible light. These hollow polymer particles may be employed as an additive in a fluorescent coating, as an additive in a basecoat onto which a conventional fluorescent coating is applied, or as an additive in both the fluorescent coating and the basecoat onto which the fluorescent coating is applied.

Abstract: A phosphorescent fiber reinforced plastic article comprising a fabric carrying a phosphorescent material encapsulated on a surface of a cured fiber reinforced plastic material made by a variety of processes including, but not limited to, pultrusion, compression molding, filament winding, contact molding, resin transfer molding, a continuous panel process, or structural reaction injection molding.

Abstract: Disclosed is a process for preparing a radiation image storage panel having a phosphor layer containing an activated stimulable phosphor, characterized in that applying a heat treatment that can secure the content of an activator in the activated stimulable phosphor.Disclosed is also a process for preparing a radiation image storage panel having a layer of a stimulable phosphor layer activated with an activator, wherein a stimulable phosphor matrix layer is formed, and thereafter the activator is diffusion added to the layer to form a stimulable phosphor layer.

Abstract: A new fluorescent aqueous marking liquid is described, which contains 0.20 to 2.0 % by weight of cumarin C.J. Basic Yellow 40 dye. The liquid is buffered to a pH value of from 3 to 5; it contains an acrylic resin dispersion at a pH of 3 to 5 with a particle agglomerate of 35 to 150 nm. The liquid does not act on a third dye, especially triphenylmethane dye, which is used frequently in carbon paper and is used also on smooth surfaces such as glass plastic foil or glazing paper.

Abstract: The invention includes a product and a fabrication method for generating one image in the presence of ambient light and a second different image in the absence of ambient light. This invention can use phosphorescent material to form one of the images. This invention is particularly related to puzzles or novelty artwork for children.

Abstract: A blood chemical sensor has a blood gas sensitive dye contained in a hydrogel matrix, the combination of dye and gel being mounted on the end of an optical fiber. The hydrogel is freeze-dried to facilitate packaging and handling.

Abstract: A sensor element useful in making fluorescence-optical measurements includes a substrate having a carrier surface, particles having a large specific surface are which are glued, melted or sintered onto the carrier surface so as to provide small elevations of a regular distribution on the carrier surface, and an indicator substance immobilized on the particles. Additional substances can be applied to the particles to reduce undesirable influences of properties of the sample on the indicator substance.

Abstract: A radiographic intensifying screen comprising a support and a phosphor-containing resin layer provided thereon, in which the void ratio of said phosphor-containing resin layer is reduced in comparison with an ordinarily prepared 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 phosphor-containing resin layer for a phosphor-containing resin layer which contains a resinous binder and a phosphor 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 phosphor-containing resin layer which contains a resinuous binder and a phosphor in a weight ratio of 1:25 to 1:100.

Abstract: Luminescent thin films are produced by a sol-gel process in which a gellable liquid is applied to a substrate to form a thin film, gelled and heated to remove volatile constituents and form a polycrystalline luminescent material.

Abstract: The invention concerns a security-marking procedure, an apparatus to sense a security marking, fiduciary documents provided with security markings, by resorting to rare-earth chelates consisting of at least two rare-earths and of which the fluorescence wavelengths vary as functions of temperature, and fiduciary document containing such chelate(s).

Abstract: A process is disclosed for applying a lubricant to a powdered material to control the fluidity of the powdered material. In the process one first obtains at least x number of samples of the powdered material without lubricant. Thereafter, increasing amounts of lubricant are applied to x-1 number of the samples. The bulk and tap densities of the samples are then measured and the Hausner ratio from the densities is calculated. The Hausner ratio versus the concentration of the lubricant in the powder samples is plotted and the concentrations of the minima lubricant in the powder samples at the point of the plot obtained in step e are determined. The concentration of lubricant determined in step f is applied to the remainder of the powdered material whereby an operational level of fluidity of the powder is achieved.

Abstract: A cover in the form of a blanket has a protective grid of phosphorescent material that when exposed to light and placed in a dark environment emits light for a period of time. The protective grid is a pattern of intersecting ribbons of phosphorescent material anchored to and covering substantially one surface of a fabric. The protective grid provides a visual light shield that creates an image of protection and is useable for amusement and entertainment.

Abstract: Luminescent balloons (18', 18") and methods of manufacture thereof wherein one or more balloon forms (11) are respectively moved through discrete sequential processing stations (12/16, 14/21 and, optionally, 15/22) for the purpose of applying successive laminations (19, 20 and, optionally, 24) on the balloon forms (11), which laminations are dryed, set and cured in drying stations (16, 21, 22) so as to form a balloon (18', 18") having: (i) an outer lamination (19) formed essentially of pure latex and providing structural integrity for the balloon; (ii) an inner lamination (20) bonded to the inner surface of the outer lamination (19), in which inner lamination (20) the luminescent dry solid particles are maintained in a latex carrier and constitute at least FIFTY PERCENT (50%), and preferably from SIXTY-FIVE PERCENT (65%) to SEVENTY-FIVE PERCENT (75%), of the total dry solids in the inner lamination (20) for imparting the luminescent qualities to the balloon; and (iii), optionally, a third essentially pure lat

Abstract: A method of detecting cracks on the surface of an article after removal of a coating. A U.V. detectable compound is incorporated in a thermoset or thermoplastic grit blast media. A coated article is grit blasted to remove the coating. The surface of the article is exposed to U.V. radiation to detect grit blast media trapped in surface cracks. This facilitates the detection of surface cracks. U.V. detectable grit blast media is also used to provide improved coating adhesion. A U.V. detectable compound is incorporated into an abrasive mixture. A flow of the abrasive mixture is directed at the article to remove material from the surface of the article. The surface of the article is exposed to U.V. radiation in order to detect residual abrasive mixture on the surface of the article. Substantially all the abrasive mixture detected by exposure to U.V. radiation is removed from the surface of the article and at least a portion of the surface of the article is coated.

Abstract: An ornamental article comprising a natural ornamental material such as pearl and a cured coating membrane of a composition based on organic materials which is coated on the surface of said natural ornamental material in a thickness from 0.01 .mu.m to 30 .mu.m, with improved properties such as surface luster and resistivity to scratch, light, chemicals, etc.

Abstract: A method for the preparation of a fluorescent ink layer for a fluorescent thermal transfer sheet is disclosed. The method comprises first forming a solution of a mixture comprising at least one acidic monomer, at least one basic monomer and at least one fluorescent dye. Thereafter, an emulsion of the solution is formed and the emulsion is polymerized.

Abstract: A method of making optrodes is provided by which a pressure-sensitive volume is incorporated in the optrode by bubble transfer and/or gas entrapment in the manufacturing step sequence.

Abstract: According to the present invention there is provided a thermal barrier coating wherein multilayers of (I) a ZrO.sub.2 layer containing a luminous activator and stabilized by Y.sub.2 O.sub.3, CaO, MgO or a mixture thereof and (II) a ZrO.sub.2 layer containing a luminous activator different from that used in (I) and stabilized by Y.sub.2 O.sub.3, CaO, MgO or a mixture thereof, or a ZrO.sub.2 layer not containing a luminous activator and stablized by Y.sub.2 O.sub.3 are stacked, and the layers at least under an uppermost layer opposite to a base member to be protected have a total thickness sufficient for exhibiting a thermal barrier effect. The present invention has as its object to provide a thermal barrier coating which allows non-destructive testing to determine whether it has a thickness sufficient for themal barrier effect.

Abstract: Compositions intended to be reacted with hydrogen peroxide to produce chemiluminescent light are disclosed wherein the compositions contain an oxalate and a fluorescer comprising 9,10-bis(4-methoxyphenyl)-2-chloroanthracene. A perylene dye may also be incorporated.

Abstract: Disclosed herein is a solar converter structure and fabrication process therefor which includes a composite zinc selenide fluorescent wavelength shifter (FWS) prepared with anti-reflective (AR) coatings on both major surfaces thereof. One of these AR coatings is adhesively bonded to an AR coating on the sunlight-receiving surface of a gallium arsenide or an aluminum gallium arsenide photovoltaic (PV) solar cell, and the "free-standing" FWS composite wavelength shifter protects the solar cell from proton and ultraviolet radiation damage. The ZnSe wavelength shifter has a spectral response below about 0.47 micrometers and the solar cell has a spectral response above about 0.47 micrometers. The wavelength shifter absorbs radiation in the 0.3 to 0.47 micrometer range and re-emits radiation to the solar cell in a band centered about 0.62 micrometers and well within the pn junction response spectra for the solar cell to thereby enhance its power output.

Abstract: In one aspect of the invention, the sample surface is wetted with an aqueous solution of a fluorescent dye followed by rinses with water to remove an excessive amount of the dye so that the background fluorescence emission can be minimized to increase the efficiency of fingerprint detection. In another aspect, the fluorescent dye or a reagent to produce fluorescent substance is deposited on the sample surface by attaching a gelatin film impregnated with a solution thereof followed by peeling. In a further different aspect, a powdery fluorescent dye is deposited on to the sample surface followed by spraying of water after removing an excessive amount of the powdery dye so that the background fluorescence can be minimized. The invention also provides an apparatus for the fingerprint detection by the laser beam excitation of fluorescence, which is compact and portable as being composed of an ingenious combination of several units into an integral system.

Abstract: Novel activator and oxalate compositions are disclosed which, when combined, result in a chemiluminescent light of high light output and short duration.

Abstract: The invention relates to a printed security with a hallmark in the form of a coating applied in a vacuum to the surface of the security. This coating is so thin that it is almost invisible even as a metal layer, while at the same time permitting accurate automatic examination. The absorption characteristics of the security are preferably measured in a certain range of the wavelength of the spectrum.

Abstract: A dry solid scintillator counting composition for the detection of radiative substances in a liquid comprises a mixture of fluor particles and a binder bonding the particles into a coherent structure, the weight amount of the fluor being sufficiently greater than the weight amount of the binder to render the structure sufficiently porous between the disposed particles of fluor to provide transport of a saturating amount of liquid throughout at least 50% of the volume of the composition.

Abstract: A process is disclosed for producing a europium activated strontium borate phosphor having a strontium containing coating. The process involves washing a europium activated strontium borate phosphor with a solution of strontium hydroxide to produce a first washed phosphor followed by removing the first washed phosphor from the resulting wash solution. The first washed phosphor is washed with a wash solution selected from the group consisting of ammonium fluoride in alcohol, ammonium bifluoride in alcohol, and a strontium salt in ammonium hydroxide, followed by removing the resulting second washed phosphor from the resulting wash solution. The second washed phosphor is then heated to produce the coated phosphor.

Abstract: A thick layer of CsI(Na) is heated to or slightly below its melting point. The CsI(Na) is held at that temperature for 7 to 10 hours and is cooled to room temperature, preferably in two steps. The resulting scintillation crystal is translucent or transparent.

Abstract: A method for printing fine or commercial art utilizing visible and/or invisible fluorescent colorants and non-fluorescent colorants in a multiple series of colorant applications with each color application being made with with a predetermined print pattern. As used herein, "fluoresecent colorants" are those which emit visible light under the ultraviolet (black light), including those which are colored and those which are colorless under visible light. The colorants are applied to a base in layers or by blending the fluorescent and non-fluorescent colorants to achieve a predetermined piece of art work. Some of the layers of colorants are used to mask, or partly mask, the brilliance of some of the fluorescent layers, in graduating degrees for viewing under ulrtraviolet observation, or viewing in other lighting conditions.

Abstract: Resin based, film-forming compositions such as adhesives are coded for identification by dispersing insoluble fluorescent taggant particles within the resin phase of the composition. The taggant is readily identifiable even after long term storage or service on a floor or wall by peeling away the floor covering such as carpet and examining a sample of the layer of adhesive under fluorescent light to determine the pattern size and color of the taggant particles. If the particles are not readily visible, the sample can be scraped with a sharp instrument such as a putty knife to expose the taggants. If the particles are still not visible, the sample is dissolved in a heavy solvent for the resin binder and the taggant particles will often float to the top where they can be observed for size and color. Failing this, the solution and residue can be separated by filltration whereby the taggants are easily detected.

Abstract: An improved optical fiber structure is provided which is hardened against the effects of ionizing nuclear radiation and comprises a conventional plastic, glass or silica optical fiber core and cladding, having an additional outer coating comprising phosphorescent or luminescent material for interacting with the ionizing radiation to provide a source of light to optically bleach the fiber core of optical absorption sites produced as a result of the interaction of the ionizing radiation with the fiber core material.

Abstract: The present invention relates to a method for concentrating light by means of fluorescent compounds in plastic sheets or films, wherein perylene compounds are used for this purpose.

Abstract: A minute color coded identifier having a longitudinal axis, which is transversely color banded about its periphery. The identifier may, for example, be 0.015 inch long, have a transverse dimension of about 0.004 inch and have seven or more color bands such as to be observable under a power of 10 or more magnification. A method of making such identifiers, as well as a method of applying the same to articles for later identification is disclosed that involves a dispersion of identifiers in a transparent and hardenable cementitious liquid such as nitrocellulose in a suitable volatile solvent such as acetone and ethyl acetate, e.g. a common clear fingernail polish.

Abstract: A luminescent compound, comprising a phosphor group or groups and an alkylalkoxysilane, and a luminescent composition comprising such luminescent compound and a radioactive substance to provide a source of exciting radiation for the luminescent compound in the composition. The present invention further comprises a method for rendering siliceous surfaces luminescent comprising applying the compound or composition to the surface and reacting the compound or composition with water after the compound or composition has migrated into the surface to hydrolyze the compound or composition. The present invention further comprises a luminescent structure having a siliceous surface incorporating the products of the reaction between the surface, water and the compound or composition of the present invention.

Abstract: Disclosed herein is a solar converter structure and fabrication process therefor which includes a composite zinc selenide fluorescent wavelength shifter (FWS) prepared with anti-reflective (AR) coatings on both major surfaces thereof. One of these AR coatings is adhesively bonded to an AR coating on the sunlight-receiving surface of a gallium arsenide or an aluminum gallium arsenide photovoltaic (PV) solar cell, and the "free-standing" FWS composite wavelength shifter protects the solar cell from proton and ultraviolet radiation damage. The ZnSe wavelength shifter has a spectral response below about 0.47 micrometers and the solar cell has a spectral response above about 0.47 micrometers. The wavelength shifter absorbs radiation in the 0.3 to 0.47 micrometer range and re-emits radiation to the solar cell in a band centered about 0.62 micrometers and well within the pn junction response spectra for the solar cell to thereby enhance its power output.

Abstract: Fluorescence-optical indicator material is chemically bonded in a network structure permeating a carrier membrane of the sensor element. As this network structure is independent of the membrane and not chemically bonded thereto, the properties of the membrane and the indicator are not affected by the immobilization.

Abstract: For the marking of gas-permeable fabric or cloth webs and other material webs, especially for the automatic marking in a marking station, the invention proposes to contact the fabric web within the marking station with a film including the pattern to be marked off in the form of perforations and acting as a stencil, and to suck atomized paint (paint mist) through the perforations and the contacting fabric web, wherein this atomized paint is an aerosol produced by atomization of a liquid containing a dye or pigment dissolved therein. Advantageously, a fluorescent dye is used to this end.

Abstract: Process for producing antireflection layer on viewing screens. A film-like layer of a varnish containing first agent is put on the outer side of the screen and while this layer is still wet it is processed with a second agent in the form of a dispersion in water of a silicate or a silicic acid, the second agent being such as to take part in a reaction with the first agent while it is on the screen. It is furthermore possible for the two agents to be mixed and then put on. Whichever of the two possible forms of the method is used, one may be certain of producing a cured or hardened layer greatly cutting down reflection.

Abstract: Disclosed is a method for marking mineral tanned leather by treating the unfinished leather with an anionic aqueous dispersion of a fluorescent pigment. The marked leather can then be sorted by exposure to UV-radiation.

Abstract: An ink that fluoresces in the near infrared is used to mark documents such as bank checks for automatic identification. Markings with this ink are reliably detectable, even in the presence of other markings commonly found on such documents. The preferred fluorescent material of our invention is a phenoxazine dye 3,7-BIS(diethylamino) phenoxazonium nitrate.

Abstract: An improved X-ray image converter is disclosed which utilizes a phosphor layer of plate-like rare earth oxyhalide phosphor crystals having said phosphor crystals physically aligned to improve light emission from the phosphor layer. More particularly, said phosphor layer is formed with the plate-like crystals being aligned generally parallel to the longitudinal axis of said phosphor layer at both surface regions while the intermediate phosphor crystals are aligned generally perpendicular to said longitudinal axis. Said improvement can be provided during formation of phosphor layer from a liquid suspension by introducing particular velocity gradients in the flow pattern of said liquid suspension.

Abstract: In a phosphate fluorescent substance including orthophosphate as a parent material and manganese as a main activator, said phosphate fluorescent substance has at least one of the following features (I) and (II): (I) The maximum intensity point in the glow curve is within the range of 200.degree.-400.degree. C. and (II) Ia/Ib is within the range of 0.6-3.0.

Abstract: A method of manufacturing a thin layer detector for integrating solid state dosimeters, in particular for thermoluminescence dosimeters (TLD's), from thermoluminescent powder material, comprising the simultaneous application of high pressure and elevated temperature to the powder layer at selected values (working point) sufficient to cause physico-chemical bonding of the layer with a suitably prepared substrate by plastic flow of the powder grains.

Abstract: The present invention is a vapor phase activator pad which produces fluorescent vapor fumes for use in a self-contained fingerprinting kit. The vapor phase activator pad is placed into an enclosed area order to fume an object in the area suspected of containing latent fingerprints. The vapor phase activator pad includes a fluorescent dye impregnated gauze pad and a composition. The composition consists of specified chlorinated organic solvents. The gauze pad is chemically treated with the composition so that when a quantity of alkyl-cyanoacrylate is placed onto the vapor phase activator pad. The vapor phase activator pad generates fluorescent vapors of the chemical cyanoacrylate wherein the latent fingerprints become exposed when an ultraviolet light source is shined on the object suspected of containing the latent fingerprints.

Abstract: A radiation image storage panel comprising a support, a phosphor layer provided thereon which comprises a binder and stimulable phosphor particles dispersed therein, and a protective film provided on said phosphor layer, characterized in that said protective film has a haze value within the range of 4-40%.

Abstract: A method in which a phosphor film of manganese doped zinc chalcogenide is produced by chemical vapor deposition from alkyl zinc vapor and the gaseous hydride of the chalcogen. The manganese dopant is introduced uniformly during deposition by decomposition of tricarbonyl alkylcyclopentadienyl manganese: ##STR1## where here R denotes the alkyl radical. Preferably dimethyl zinc and tricarbonyl methylcyclopentadienyl manganese are used.The phosphor produced may be one of the following manganese doped compounds: zinc sulphide, zinc selenide, zinc sulphur selenide, zinc oxy-sulphide, zinc oxy-selenide or zinc cadmium sulphide.

Abstract: A barrier pigment is added to a fluorescent ribbon to prevent light from being absorbed into the media upon which the pigment is applied during printing. The barrier pigment is added to the fluorescent layer or is applied over the fluorescent layer as an additional layer.