Abstract: Polyimides with enhanced electrical conductivity are produced by adding a silver ion-containing additive to the polyamic acid resin formed by the condensation of an aromatic dianhydride with an aromatic diamine. After thermal treatment the resulting polyimides had surface conductivities in the range of 1.7.times.10.sup.-3 4.5 .OMEGA..sup.-1 making them useful in low the electronics industry as flexible, electrically conductive polymeric films and coatings.

Abstract: A power connector in accordance with IEC320 for providing common connections for individual male and female connectors and a ground lead, for example, to a anti-glare filter. The power connector device includes an insulating body which houses male ground and power plugs and female ground and power receptacles which are joined within the body to the male plugs; a common ground connector adapted for external connection to a ground lead as well as to the electrically common male and female ground connectors; and preferably a shroud surrounding the external sections of the male plugs for preventing accidental human contact.

Abstract: Methods for rendering a recording medium for use with a recording laser beam providing light of a given energy and frequency, where the medium is characterized by a light-reflecting structure with a light-absorbing record layer thereon and a sealing overcoat on the record layer, the light-absorbing record layer being prone to exhibit micro-excursions and/or micro-deformation during laser recording thereon, and a transparent "soft-pad" isolation layer is interposed, between the light-absorbing layer and the overcoat, this soft pad having a thickness and other characteristics such that the absorber layer is constrained little, or not at all, in the course of being written-upon with the laser, the soft, pad thus functioning to isolate the absorber layer thermally and mechanically, as well as to help defocus dust, etc.

Abstract: Recording media for recording information "bits" in response to activation of a laser beam, the media including a recording layer adjacent a "soft pad" layer above and/or below (e.g., a vacuum-evaporated reconstituted fluoropolymer), especially as a "soft pad overcoat". A "hard cap" is overlaid on such a "soft pad" overcoat (e.g., a radiation-cured acrylic) as an outer protective sealing coat. The soft pad may be rendered under the recording layer as a spacer layer.

Abstract: For an optical data storage system employing a data-modulated writing laser beam, optical media are described which include a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer and an optical absorber (recording) layer overlying the spacer layer,--plus an overcoat structure including a "soft pad" layer (e.g., fluoropolymer) on and/or under the absorber plus a "hard" overcoat layer (e.g., radiation-cured acrylic) laid over the "soft pad" as an outer protective overcoat.

Abstract: For an optical data storage system employing a data-modulated writing laser beam, optical media are described which include a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer and an optical absorber (recording) layer overlying the spacer layer, -- plus an overcoat structure including a "soft pad" layer (e.g., fluoropolymer) on and/or under the absorber plus a "hard" overcoat layer (e.g., radiation-cured acrylic)laid over the "soft pad" as an outer protective overcoat.

Abstract: An optical interference filter structure incorporates antireflectance and light absorbing elements disposed on a substrate. The filter structure is shaped to conform substantially to the face of a cathode ray tube or other luminous display, such as a cathode ray tube for example. The materials of the elements are selected for their characteristics including indices of refraction, light absorption and chromatic filtering so that in combination they provide optimum antireflectance, antiglare and image contrast features.

Abstract: A coated article useful in high temperature environments substantially in excess of 500.degree. C. comprising a substantially transparent substrate formed of a material adapted to withstand said high temperature environment and an optical coating formed on one surface of said substrate and comprising a first set of layers consisting at least primarily of silicon dioxide and a second set of layers consisting at least primarily of tantalum pentoxide. The optical coating comprises an interference filter formed of alternating layers of fused silica and tantalum pentoxide. A halogen cycle lamp with visible light transmitting, IR reflecting filter formed on the outside surface of the lamp envelope improves energy efficiency by at least twenty-five percent.

Abstract: An optical data storage system is contemplated, employing improved optical disk media, these characterized by multiple layers, including various under layers, an optical absorber layer, and overcoating layers, such as a "soft pad" layer (e.g., a fluoropolymer) overlaid with a "Hard" layer (e.g., a radiation-cured acrylic) as an outer protective overcoat. Taught are "Spiral" coating techniques (FIG. 3) specified for applying the "Hard" layer and preferably involving: applying the coating mix as arcuate "bead segments" about the disk center, these being formulated and applied to properly "set-up" and quickly "level" (e.g., close enough to one another and "self-leveling").

Abstract: An optical data storage system is contemplated, one employing a data-modulated writing laser beam and a non-erasing reading laser beam of predetermined wavelength.Improved optical media for such systems are described, these characterized by multiple layers whose optical characteristics and thickness are chosen to accommodate a prescribed writing and reading energy and wavelength and so provide an "anti-reflection" condition for unrecorded portions of the medium and a relatively higher reflectivity for recorded portions. A preferred optical medium includes a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer, and an optical absorber (recording) layer overlying the spacer layer.Overcoating structure is specified in some detail; e.g., as a "soft pad" layer (e.g., fluoropolymer) on the absorber, with a "Hard" layer (e.g., radiation-cured acrylic) laid over the "soft pad" as an outer protective overcoat.

Abstract: Article having improved reflectance suppression comprising a substrate formed of a material having a reststrahlen band and having at least one surface and a coating carried by said one surface. The coating comprises at least one period with each period consisting of a spacer layer and an absorber layer. The spacer layer is formed of a material having a low index of refraction and has an optical thickness ranging from approximately one quarter of a wavelength and less. The spacer layer also has low absorption in the visible region of the spectrum. The absorber layer is formed of a material which has substantial absorption near the reststrahlen band. The absorber layer has a complex index of refraction as a function of wavelength which is relatively close to the index of refraction of the substrate.

Abstract: An optical data storage system is contemplated, one employing a data-modulated writing laser beam and a nonerasing reading laser beam of predetermined wavelength.Improved optical media for such systems are described, these characterized by multiple layers whose optical characteristics and thickness are chosen to accommodate a prescribed writing and reading energy and wavelength and so provide an "anti-friction" condition for unrecorded portions of the medium and a relatively higher reflectivity for recorded portions. A preferred optical medium includes a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer, and an optical absorber (recording) layer overlying the spacer layer.Overcoating structure is specified in some detail; e.g., as a "soft pad" layer (e.g., fluoropolymer) on the absorber, with a "Hard" layer (e.g., radiation-cured acrylic) laid over the "soft pad" as an outer protective overcoat.

Abstract: An optical data storage system is contemplated, one employing a data-modulated writing laser beam (FIG. 2: .circle.L ) with improved associated optical media (FIG. 2), these characterized by multiple layers (FIG. 2:c,d,e,f,g)--more particularly, a highly reflective aluminum layer (c), a relatively transparent polymer spacer layer (d) overlying the reflective layer, and an optical absorber (recording) layer (e) overlying the spacer layer, plus an overcoating structure, e.g., as a "soft pad" layer (f; e.g., a fluoropolymer) on the absorber, with a "Hard" layer (g; e.g., a radiation-cured acrylic) laid over the "soft pad" as an outer protective overcoat. "Spiral" coating techniques (FIG. 3) are specified for applying the "Hard" layer.

Abstract: A cathode ray tube face plate construction for suppressing the halo on the face plate of the cathode ray tube having a face plate formed of glass with an index of refraction in the vicinity of 1.52 and with outer and inner surfaces. A fluorescent phosphor screen is carried by the inner surface. A metallic coating may overlie the phosphor screen on the side of the screen facing away from the face plate. An absorbing filter is disposed between the phosphor screen and the face plate for absorbing light emitted from the phosphor screen. An angle sensitive short wave pass filter is disposed between the phosphor screen and the absorbing filter for reflecting light emitted at a high angle from the phosphor screen.

Abstract: Solar cell construction having a body formed essentially of silicon and having a surface with a photovoltaic junction applied thereon. An anti-reflection coating is formed on the surface. A transparent protective cover is provided. A cut-on filter is carried by the cover for reflecting solar energy below approximately 350 nanometers. A layer of substantially transparent cement is used for securing the protective cover to the body so that it overlies the junction and the anti-reflection coating. The cut-on filter includes a stack of high and low index layers for reflecting solar energy in the ultra-violet region of 350 nanometers and below and also may include at least one additional layer of material of absorbing ultraviolet energy below 350 nanometers which passes through the high and low index layers above it.

Abstract: Visible transmitting and infrared reflecting filter having a substrate formed of a material capable of transmitting visible light or absorbing visible light and having a surface and a coating carried by the surface of the substrate. The coating comprises at least one period of a multilayer stack which is reflecting in the infrared and transmitting at shorter wavelengths. The period is formed of a plurality of layers of high and low index materials with alternate layers being formed of materials having a high index of refraction and the other layers being formed of materials having a low index of refraction. At least one anti-reflection layer is disposed between adjacent layers of the period for matching the layers of the period to each other in the visible so that the transmission of the filter is relatively high over a relatively wide wavelength band at shorter wavelengths while maintaining high reflection and low absorption at the longer wavelengths.