Abstract: A procedure used to prepare Ba(Ti.sub.1-x),Zr.sub.x)O.sub.3 compositions wherein 0<x<0.25 having a more completely randomized distribution of Ti and Zr atoms on the TiO.sub.2 sublattice of barium titanate is described. In accordance with the present invention there is provided a method for preparing barium titanium zirconium oxide ferroelectic ceramic. The present method comprises mixing tetraalkyl titanate and alkyl zirconate in appropriate amounts to produce (Ti.sub.1-x Zr.sub.x)alkoxide wherein 0<x<0.25; reacting (Ti.sub.1-x Zr.sub.x) alkoxide wherein 0<x<0.25 to form (Ti.sub.1-x Zr.sub.x)O.sub.2 wherein 0<x<0.25 admixing (Ti.sub.1-x Zr.sub.x)O.sub.2 with BaCO.sub.3, said BaCO.sub.3 being added in a molar ratio greater than 1 relative to (Ti.sub.1-x Zr.sub.x)O.sub.2 ; heating the admixture for a period of time and at a temperature sufficient to produce Ba(Ti.sub.1-x Zr.sub.x)O.sub.3 wherein 0<x<0.25.

Abstract: A process for fabricating arc tubes for the manufacture of unsaturated vapor high pressure sodium lamps wherein a first electrode is sealed into one end of a ceramic envelope, a sodium-mercury amalgam and an oxygen-absorbing getter are introduced into the ceramic envelope, the ceramic envelope is flushed and then filled with a rare gas, and a second electrode is sealed into the other end of the ceramic envelope to provide an arc tube wherein decomposition of the amalgam and absorption of oxygen occurs within the ceramic envelope during operational use.

Abstract: A process for electrolytically recovering mercury from mercury compounds is provided. In one embodiment, Hg is recovered from Hg.sub.2 Cl.sub.2 employing as the electrolyte solution a mixture of HCl and H.sub.2 O. In another embodiment, Hg is electrolytically recovered from HgO wherein the electrolyte solution is comprised of glacial acetic acid and H.sub.2 O. Also provided is an apparatus for producing isotopically enriched mercury compounds in a reactor and then transporting the dissolved compounds into an electrolytic cell where mercury ions are electrolytically reduced and elemental mercury recovered from the mercury compounds.

Abstract: A method of yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which the specific isotope is to be isolated, radiating the gas with frequencies characteristic of the absorption of a particular isotope of the atomic or molecular gas, thereby inducing a photoionization reaction of the desired isotope, and collecting the specific isotope ion by suitable ion collection means.

Abstract: A method of yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which a scavenger, radiating the gas with a wave length or frequency characteristic of the absorption of a particular isotope of the atomic or molecular gas, thereby inducing a photochemical reaction between the scavenger, and collecting the specific isotope-containing chemical by using a recombination surface or by a scooping apparatus.

Abstract: A lamp including an evacuated outer jacket, a light source capsule mounted within an evacuated outer jacket, and getter assembly disposed within the outer jacket is disclosed. the getter assembly includes a getter and protection device for protecting lamp parts, e.g., the inner surface of the outer jacket, during flashing of the getter. In a most preferred embodiment, the protection device is formed by a small glass envelope, preferably similar to a photoflash bulb envelope, having a small opening. A getter, such as a getter ring, typically used in the lighting art, is mouted within the bulb envelope. When the getter is activated, the metal vapor of the activated getter is caught inside this bulb envelope and condenses on the inside glass surface of the latter. the impurities within the outer jacket of the lamp diffuse through the opening in the bulb envelope of the protection device of the preferred embodiment and are absorbed by the getter.

Abstract: A process of dosing the arc tube of an unsaturated vapor high pressure sodium lamp wherein a sodium-containing compound, an oxygen-absorbing getter, mercury and a rare gas are deposited within the arc tube, and the arc tube is sealed whereby thermal decomposition of the sodium-containing compound is effected within the arc tube and the getter prevents compound reformation by absorbing the oxygen therein.

Abstract: A metal halide high intensity discharge lamp including a carbon monoxide additive in the arc tube fill to improve lumen maintenance is provided. The metal halide discharge lamp of the present invention comprises: an outer sealed glass envelope; a pair of electrical conductors sealed into and passing through the glass envelope; an arc tube disposed within the outer glass envelope, the arc tube including a pair of spaced electrodes therein with the electrodes being electrically connected to the electrical conductors such that one electrode is electrically connected to one electrical conductor; a chemical fill disposed within the arc tube, the chemical fill comprising mercury, metal halide additives, carbon monoxide, and a starting gas; and a support structure disposed within the outer glass envelope to support the arc tube therein.

Abstract: An improved metal halide discharge lamp is provided. The improved metal halide includes an arc tube having a pair of electrodes and containing a fill including an inert starting gas, mercury, and metal halides; and an outer envelope enclosing the arc tube. The entire outer surface of the arc tube is coated with a heat reflective material to improve lamp efficiency.

Abstract: An arc tube including a tubular ceramic envelope; a chemical fill within the envelope; a seal button at each end of the envelope, the seal button having an aperture therethrough for receiving a feedthrough member; a feedthrough member having an electrode projecting therefrom passing through the seal button aperture and being oriented such that the electrode projects into the tubular ceramic envelope; frit material sealing the seal buttons into the ends of the envelope and the feedthrough members into the seal buttons; and means for interrupting the seal interface between the feedthrough member and the frit material around the total circumference of at least a portion of the feedthrough member. In a preferred embodiment of the present invention, the means for interrupting the seal interface includes a coating disposed around the periphery, or circumference, of the feedthrough member.

Abstract: A coating suspension including negatively charged fine particles, water, a negative charge precursor, a defoaming agent, a surface active agent, an insolubilizing agent, a plasticizer, and two water-soluble binders is provided. In a preferred embodiment the fine particles are fine particle-size silica. There is also provided a method for coating a substrate with fine particles having a negative electrical charge. The method includes forming a coating suspension including the fine particles, water, a negative charge precursor, a defoaming agent, a surface active agent, an insolubilizing agent, a plasticizer, and two water-soluble binders; applying the coating suspension to the surface of the substrate to form a coated substrate; and heating the coated substrate to cure the coating and remove the water from the suspension. The coating formed is insoluble in water and water based media.

Abstract: An arc tube fabricating process wherein an oxygen-absorbing getter is affixed to at least one of a pair of electrodes, one of the electrodes is sealed into the end of a tubular ceramic envelope, a dosage is deposited in the tubular ceramic envelope and the other one of the pair of electrodes is sealed into the other end of the tubular ceramic envelope.

Abstract: The present invention is directed to novel AC thin film electroluminescent display devices employing a protective dielectric stripe along the edges of the transparent electrode (or conductor). In particular, the present invention is directed to an AC thin film electroluminescent display device comprising:a multilayer stack including a first dielectric layer; a phosphor layer; and a second dielectric layer; situated on a glass substrate which includes parallel stripes of etched transparent conductors;said multilayer stack further including a protective stripe of dielectric material placed at least along the edges of the transparent conductors.The present invention is also directed to a method for protecting an AC thin film electroluminescent display device against premature breakdown at the edges of the transparent conductors. This protection is achieved by depositing a stripe of dielectric material along the edges of the transparent conductors.

Abstract: A method for producing manganese activated zinc silicate phosphor wherein the individual phosphor particles are surrounded with a non-particulate, conformal aluminum oxide coating is disclosed. The method comprises dry blending a mixture of components consisting essentially of zinc oxide, silicic acid, a source of manganese, ammonium chloride, ammonium fluoride, tungstic oxide, and silica, wherein the Zn+Mn/Si mole ratio is from about 1.95 to about 2.02, wherein the silica is colloidal and has a surface area of from about 50 to about 410 m.sup.2 per gram, and wherein the colloidal silica makes up from about 0.01% to about 1.0% by weight of the mixture; firing the resulting dry blend of components in a nitrogen atmosphere at a temperature of from about 1200.degree. C. to about 1300.degree. C.

Abstract: A quick-cure laminating process for multi-lamp photoflash arrays includes the application of a curable adhesive to a metallic printed circuit, the positioning of the adhesive-covered printed circuit adjacent a deformable rubber material and a circuit board and the printed circuit and circuit board intermediate a pair of surfaces movable with respect to one another and the moving of said surfaces to exert a compressive force on said printed circuit and circuit board while being heated to a temperature and for a time sufficient to effect attachment of the printed circuit to the circuit board. In another aspect, the circuit board may be of a deformable material, placed in contact with an adhesive-covered printed circuit, compressed and heated to effect attachment of the printed circuit to the circuit board.

Abstract: This invention relates to incandescent lamps and more particularly to the gettering of such lamps. In accordance with the present invention, there is provided an incandescent lamp comprising an envelope, a tungsten filament mounted within the envelope, a fill gas, and a getter comprising silane and phosphorus. In accordance with another aspect of the present invention, there is provided a method of gettering an incandescent lamp. The method comprises providing a getter comprising phosphorus and silane in an unsealed lamp envelope; sealing the lamp envelope; and activating the phosphorus source and silane located within the sealed envelope.

Abstract: An improved fluorescent lamp is disclosed. The lamp of the present invention includes an envelope containing an ionizable medium including mercury and having electrodes located within the envelope; an aluminum oxide reflector layer on the inner surface of the envelope, and a phosphor layer disposed on the reflector layer. The aluminum oxide reflector layer comprises particles of high purity aluminum oxide having an average particle size greater than 0.5 micrometer and less than or equal to about 1 micrometer and having a surface area of about 4 to 6 meter.sup.2 /gram. The aluminum oxide reflector layer preferably includes at least 95 weight percent alpha-alumina. Preferred coating weights for the reflector layer are from about 8.8 to about 11.1 milligram/square centimeter.

Abstract: A method for making a fluorescent lamp having a CRI approximately the same as the CRI of the lamp phosphor is disclosed. The method includes applying a coating comprising fine particle-size silica to the inner surface of the lamp envelope to form a coated envelope, the coating having a coating weight greater than 0.7 milligrams per square centimeter and less than the weight at which lumen output of the lamp is reduced due to absorption of visible wavelength light by the silica. A coating of phosphor selected to provide a predetermined CRI is applied over the silica layer; and the coated phosphor envelope is processed into a finished lamp. A fluorescent lamp having a CRI approximately equal to the CRI of the lamp phosphor is also disclosed. The lamp of the present invention includes a lamp envelope having an inner surface; a layer of fine particle-size silica disposed on the inner surface of the lamp envelope, the silica layer containing greater than about 0.7 mg/cm.sup.

Abstract: This invention relates to incandescent lamps and more particularly to the gettering of such lamps. In accordance with the present invention, there is provided an incandescent lamp comprising an envelope, a tungsten filament mounted within the envelope, a fill gas, and a getter comprising phosphorus and a borane compound and/or partially halogenated derivatives thereof. In accordance with another aspect of the present invention, there is provided a method of gettering an incandescent lamp. The method comprises providing the above-described getter in an unsealed lamp envelope; sealing the lamp envelope; and activating the getter located within the sealed envelope.

Abstract: An apparatus and method for registration or alignment of thin film structure patterns on a substrate formed with the use of an apertured mask in a vacuum deposition system. On particular the alignment apparatus is comprised of a mask holder assembly, which supports the apertured mask, and a substrate carrier which engages with the holder assembly. Upon placing the engaged alignment apparatus in a a deposition chamber, a magnet is positioned adjacent the holder assembly in order to formly hold the apertured mask against a substrate prior to vacuum to deposition. Upon depositing the pattern material, the magnet and holder assembly are disengaged, resulting in a pattern of thin film structures remaining on the substrate. The present invention is effective for remotely operating automatic masking systems where there is a need to eliminate the need for breaking vacuum in a deposition system.