Abstract: A projection display is based on a new switching technology for routing laser light among a set of optical waveguides and coupling that light toward the viewer. The switching technology is based on poled electro-optical structures. The display technology is versatile enough to cover application areas spanning the range from miniature high resolution computer displays to large screen displays for high definition television formats. The invention combines the high brightness and power efficiency inherent in visible semiconductor diode laser sources with a new waveguide electro-optical switching technology to form a dense two-dimensional addressable array of high brightness light emissive pixels. This invention provides an all solid-state, full color, high resolution projection display suitable for displaying computer generated information and full motion HDTV.

Abstract: A poled dielectric structure, such as is useful as a frequency doubler, is fabricated by creating a uniform potential, such as a ground by means of an electrode surface, adjacent a first surface of a polable dielectric material, such as a piezo-electric or lithium niobate, and then applying an electric field adjacent a second surface of the polable dielectric material, where the electric field is spatially-modulated according to a three-dimensional modulation pattern with a field amplitude level at selected locations sufficient to cause atomic rearrangement within predefined regions in the polable material, and where the modulation amplitude level of the modulation pattern is controlled according to a modulation parameter. The control mechanism of modulation amplitude level may be protrusions of an electrically-conductive material extending toward the polable material or by modulated variations in the dielectric constant of a dielectric material separating the polable material from an electrode plate.

Abstract: Described are preferred myocardial grafts of skeletal myoblasts or cardiomyocytes, and cellular compositions and methods useful in obtaining the grafts. The myocardial grafts are stable and can be used, for example, to deliver recombinant proteins directly to the heart.

Abstract: A new class of optical energy transfer devices and energy guiding devices uses an electric field to control energy propagation using a class of poled structures in solid material. The poled structures, which may form gratings in thin film or bulk configurations, may be combined with waveguide structures. Electric fields applied to the poled structures control routing of optical energy. Devices include splitters, parallel and Y couplers, mode converters and energy leakage attenuators.

Abstract: Optical energy transfer devices and energy guiding devices use an electric field to control energy propagation using a class of poled structures in solid material in a channel dropping filter and splitter applications. The poled structures, which may form gratings in thin film or bulk configurations, may be combined with waveguide structures. Electric fields applied to the poled structures control routing of optical energy. In a particular embodiment, an electrode confronts a solid material and bridges at least two elements of a grating disposed transverse of two waveguide segments and overlaps evanescent fields of optical energy in one of the waveguide segments. A switchable grating which consists of a poled material with an alternating domain structure of specific period. In a further embodiment there may be an optically active cladding between a grating and a waveguide. Additional electrodes may be provided for independent tuning of the cladding and the grating structure.

Abstract: A flat panel display is based on a new switching technology for routing laser light among a set of optical waveguides and coupling that light toward the viewer. The switching technology is based on poled electro-optical structures. The display technology is versatile enough to cover application areas spanning the range from miniature high resolution computer displays to large screen displays for high definition television formats. The invention combines the high brightness and power efficiency inherent in visible semiconductor diode laser sources with a new waveguide electro-optical switching technology to form a dense two-dimensional addressable array of high brightness light emissive pixels.

Abstract: A poled dielectric structure, such as is useful as a frequency doubler, is fabricated by creating a uniform potential, such as a ground by means of an electrode surface, adjacent a first surface of a polable dielectric material, such as a piezo-electric or lithium niobate, and then applying an electric field adjacent a second surface of the polable dielectric material, where the electric field is spatially-modulated according to a three-dimensional modulation pattern with a field amplitude level at selected locations sufficient to cause atomic rearrangement within predefined regions in the polable material, and where the modulation amplitude level of the modulation pattern is controlled according to a modulation parameter. The control mechanism of modulation amplitude level may be protrusions of an electrically-conductive material extending toward the polable material or by modulated variations in the dielectric constant of a dielectric material separating the polable material from an electrode plate.

Abstract: One or more lasers are combined with optical energy transfer devices and energy guiding devices which use an electric field for control. The optical energy transfer devices may form gratings, mirrors, lenses and the like using a class of poled structures in solid material. The poled structures may be combined with waveguide structures. Electric fields applied to the poled structures control routing, reflection and refraction of optical energy. Adjustable tunability is obtained by a poled structure which produces a spatial gradient in a variable index of refraction along an axis in the presence of a variable electric field.

Abstract: A trash collection and compacting apparatus primarily intended for use onboard an aircraft comprising a stationary compactor unit and interrelated movable trolley unit, the trolley unit having a plurality of separate trash collection chambers into which trash is deposited and compacted. The trolley unit includes wheels for moving the trolley through an aircraft for the collection of trash, and support rails for supporting the trolley unit on the compactor unit for the direct compaction of trash in the trolley. The compactor unit includes a compaction ram mounted on a carriage assembly for movement into discrete positions overlying each collection chamber of the trolley unit, and supports the trolley so that compaction forces are not transmitted to the aircraft.

Abstract: Optical energy transfer devices and energy guiding devices arranged in an array use an electric field to control energy propagation. The energy transfer devices and guiding devices use a class of poled structures in solid material to realize a high-speed matrix switch, such as is known as an asynchronous transfer mode (ATM) switch used for routing communication signals. The poled structures, which may form gratings or total internal reflection devices, are combined with waveguide structures. Electric fields applied to the poled structures control routing of optical energy.

Abstract: A trash collection and compacting apparatus primarily intended for use onboard an aircraft comprising a stationary compactor unit and interrelated movable wheeled trolley unit, the trolley unit having a plurality of separate trash collection chambers into which trash is deposited and compacted and support rails for supporting the trolley unit on the compactor unit for the direct compaction of trash in the trolley. The trolley unit also has separable sides to facilitate removal of compacted trash, and multiple fail safe locks and latches to ensure that the sides are not inadvertently separated during trash collection and compaction. Fire doors are provided to close the chambers, and removable trash bins are disposed in each trash chamber to facilitate handling of compacted trash, the bins having separable sides for emptying the compacted trash therefrom.

Abstract: An article holder having adjustable loops comprises a foundation piece having a slot therein for receiving a looped strip of flexible material therethrough and locking structure comprising a member having greater width than the slot, positionable beneath the slot, for frictional engagement with the looped strip and through the looped strip when the member is beneath the slot.

Abstract: This invention relates to a mat having a major surface providing an operational surface for a device incorporating a rolling ball or roller such as a computer mouse, in which at least a portion of the mat is tacky whereby the ball or roller can be cleaned by passing the ball or roller over that portion.

Abstract: A negative electron affinity device has acceptor dopant concentration increased proximate the emitter face of the III-V semiconductor layer and within the depletion zone effected by an overlying CsO negative electron affinity coating. Methods to accomplish dopant concentration include diffusion, ion implantation and doping during crystal growth.

Abstract: An image intensifier tube that utilizes a photoresponsive layer for producing electrons in response to received radiation, a solid state electron amplifier for multiplying the electrons produced by the photoresponsive layer, a cold cathode for emitting electrons into vacuum, and a phosphor screen for converting impinging electrons into a visible image. The solid state electron amplifier is formed as a semiconductive layer interposed in between a photoresponse layer and a negative electron affinity layer on the photocathode. The solid state electron amplifier receives the electrons produced by the photoresponsive layer, multiplies the electrons and directs the electrons to the negative electron affinity layer. The negative electron affinity layer then directs the electrons through a vacuum to the phosphor screen producing a viewed image.

Abstract: A negative electron affinity device has acceptor dopant concentration increased proximate the emitter face of the III-V semiconductor layer and within the depletion zone effected by an overlying CsO negative electron affinity coating. Methods to accomplish dopant concentration include diffusion, ion implantation and doping during crystal growth.

Abstract: Adding a dye with a visible color to an ultraviolet radiation curable composition which contains a photoinitiator which generates free radicals upon exposure to ultraviolet radiation produces a composition which changes visible color upon exposure to ultraviolet radiation. This visible color change indicates that the composition has cured. This cure indication is useful for compositions curable by ultraviolet radiation in the electronics and electrical industry.

Abstract: A multiple speaker loudspeaker system wherein an internal baffle extends the full length of the interior volume dividing the interior volume into two unequal portions. The baffle has folded portions, which is not parallel to the walls of the enclosure. Loudspeakers are mounted onto the folded portions within a first volume. The loudspeakers radiate sound into a second volume. One of the first and second volume is ported in a bandpass configuration, to the outside of the enclosure. Thus, the non-parallel portions of the baffle reduce unwanted peaks and/or cancellations in the sound emanating from the enclosure. Additionally, the baffle is secured along its width to top and bottom walls of the enclosure, thus also providing extra rigidity to the enclosure.

Abstract: A synchronizer assembly (S) having an axially centered neutral recess (13) and on each axial side of the neutral recess a gear engaging recess (22, 23) is provided. The gear engaging recesses (22, 23) are selectively engageable by a radially outwardly biased detent member (14) mounted in a strut (3) to minimize the tendency of the detent member from causing undue wear to the synchronizer assembly when the synchronizer assembly is in a gear engaging position. Preferably, the gear engaging recesses (22, 23) are shallower than the neutral recess (13).