Abstract: A coated substrate is covered with a barrier or base coating having spaced apart transparent electrodes deposited thereon. The base coating and electrodes are arranged such that the electrodes and the base coating together and the base coating alone have at least matching photopic reflectivity in a selected liquid, and preferably have matching spectral response in the selected liquid, over a wavelength range between about 470 and 650 nm.

Abstract: A power supply for driving two magnetron sputtering devices in a bipolar mode includes current pulse circuits one for driving each of the two magnetrons. Each of the current pulse circuits converts positive and negative voltage outputs of a DC electrical power source to a train of regulated current pulses of independently adjustable duration. Each of the current pulse circuits includes a circuit block for converting the DC output voltage to a source of regulated current and delivering that regulated current to an input end of an inductor. Each of the current pulse circuits also includes an output switching circuit block which periodically and alternatively switches an output terminal between an output end of the inductor and the positive voltage output of the DC power source. The power supply may be configured to drive one magnetron in a unipolar mode alone or as an alternative to driving two magnetrons in a bipolar mode.

Abstract: A method for producing titanium dioxide from an iron-containing titanium ore concentrate includes heating the ore concentrate in the presence of a reducing agent to provide a sintered reaction product including a titanium salt of the alkali metal and metallic iron. The titanium salt of the alkali metal is decomposed by addition of water to provide titanium dioxide. For ilmenite (FeTiO.sub.3), preferred alkali metal salts include carbonates, and formates of sodium and potassium. The titanium metal salt so formed is sodium or potassium meta titanate (K.sub.2 TiO.sub.3 or Na.sub.2 TiO.sub.3) depending on the alkali metal used. Suitable reducing agents include hydrogen, methane, carbon monoxide, or solid carbon. Metallic iron may be magnetically separated from ground reaction product or from a slurry formed by addition of water to the reaction product, the slurry including the titanium dioxide.

Abstract: A faceplate for a touch-sensitive display includes, on an outermost surface, a pattern of electrode-regions separated by spaces. A base-coating is deposited on the surface and extends continuously over the surface. The electrode-regions are formed from a layer of a conductive transparent metal-oxide deposited on the base-coating. The electrode-regions and spaces are overcoated by a protective-layer of an insulating material. For light incident on the faceplate at about normal incidence photopic reflectivity in the protective-layer-overcoated electrode-regions is within plus or minus ten percent of photopic reflectivity in the protective-layer-overcoated spaces.

Abstract: An anti-reflection coating includes a first layer of a transparent material having a low refractive index a second layer of an absorbing metal, a third layer of a material which may have a high or a low refractive index and a fourth layer of titanium nitride.

Abstract: A privacy filter (20) for a display device includes at least two spaced-apart, generally parallel grids (22 and 24). Each grid includes an array of strips (26 and 30) or blocking members having transparent space (28 and 32) therebetween. The strips or blocking members are formed aligned such that an image (37) displayed on the display device may be viewed through the filter at an angle of incidence within a predetermined range of angles but is not discernable at angles outside of the predetermined range.

Abstract: An electrical-storage battery includes a cell defined by two spaced-apart graphite electrode-plates one of which forms a cathode and the other an anode. The cell contains an electrolyte which is an aqueous solution including sulfuric acid. In a charged condition, the electrode-plate which forms a cathode has a surface layer of lead in contact with the electrolyte, and the electrode-plate which forms the anode has a surface layer of manganese dioxide in contact with the electrolyte. In a battery having multiple cells arranged in electrical series, a single graphite electrode-plate physically separates adjacent cells, but electrically connects the cells. This electrode-plate serves as a cathode for one of the adjacent cells, and as an anode for the other.

Abstract: A multilayer antireflection coating for a liquid cell three high refractive index layers and two low refractive index layers arranged alternatively with high refractive index layers outermost. The innermost high refractive index layer is formed from an electrically-conductive metal oxide material and may have an optical thickness between about one-tenth and three wavelengths of visible light. Thickness of each layer may be adjusted to provide lowest reflectivity. Alternatively layer thickness may be arranged such that if three layers of the coating are etched away to define an electrode coating, spectral response of the remaining two layers is the same as the original five layers.

Abstract: Vacuum coating apparatus (30) includes a coating chamber (32), and a load-lock chamber (34) connected to the coating chamber via a high vacuum valve (44). The coating chamber includes deposition-devices (123) and a cylindrical or drum shaped substrate-transporter (100) for transporting substrates (64) past the deposition-devices. Substrates are carried on substrate-carriers (66) which are configured to fit into transport-stations (102) around the periphery of the substrate-transporter. A magazine (61) holding a plurality of substrate-carriers is located in the load-lock chamber. An injector arrangement (120) is provided for ejecting a substrate-carrier from the magazine, transporting the substrate-carrier through the high vacuum valve, and inserting the substrate-carrier into a transport-station of the substrate-carrier.

Abstract: A visible light transmitting, near-infrared reflecting filter for a substrate, comprises a central group of layers (26) including two metal layers (32 and 36) separated by a spacer-layer (34) and bounded by admittance-matching layers (32 and 38). The spacer-layer has an optical thickness of less than one-half wavelength of visible light and the admittance-matching layers have an optical thickness of less than one-quarter wavelength of visible light. On each side of the central group is a group of layers (24 and 28) for boosting near infrared reflectivity of the filter, and for providing low reflection and high transmission for visible light. Each of these near-infrared-reflection-boosting groups including a high refractive index layer (40 and 42) and at least one low refractive index layer (46 and 48).

Abstract: A linear planar-magnetron sputtering cathode comprises a cathode body (22) including two side-walls (104) two end-walls (106) and a target-supporting member (102) attached to the walls. The cathode body encloses a magnet array (40) which may be moved reciprocally in at least one direction relative to the cathode body. A cooling fluid may be flowed through the target supporting member for cooling the target. A cooling fluid may also be flowed through the side-walls and the end-walls for cooling the end walls. A cooled enclosure is thus be provided for the magnet-array.