Abstract: A beam from a test image is split into two paths. The beam in one path may pass through broad-band or narrow-band attenuators to the intensifier being tested. A portion of the beam in the other path passes through a hole in a reflector to the eye of a viewer. The intensifier provides an output beam, and this beam is reflected by the reflector to the eye of the view. The viewer thus sees an image that may have a lighter or darker portion, depending on whether the output beam from the intensifier is brighter or dimmer than the test image. Various attenuators may be inserted in the one optical path to provide tests of such things as intensifier gain, relative gain, or EBI on a go/no go basis.

Abstract: A layer of epitaxial silicon is grown on a silicon growth substrate, a thin layer of silicon dioxide or other suitable insulator is grown (in the case of silicon dioxide) or deposited (for other insulators) on the epitaxial layer, and a thick layer of polysilicon is grown on the dioxide layer. The silicon growth substrate is then removed, and the epitaxial layer is etched to form islands on the insulator layer. Some of the islands are doped to form an array of infrared sensitive detectors, and a large island is doped to act as CCD region. Electrical leads are fabricated, some to provide drive and output lines for the CCDs, other to provide connections of the detectors to respective CCDs, and yet others to provide common leads for the detectors.

Abstract: An improved solid state pyroelectric imaging system having readout of the cture elements of the pyroelectric disc in a plurality of parallel readout channels. Each picture element of a given line is sequentially connected through photoconductive switches to an amplifier and a display device.

Abstract: A thermal and visible camouflage is provided for military equipment and the ike, which consists of a layer of foamed plastic that varies randomly in its insulating effect as a function of its position on the surface and may also include uniform coatings under the layer on the hottest portions of the surface.

Abstract: A differential gear or motor driven shaft carries drive sprockets for a m chain having a load end and a tail end. The shaft also carries a pulley or gear for driving with a belt or chain a corresponding pulley or gear on an intermediate shaft. This intermediate shaft also carries a pulley or gear which drives a belt or chain, and this belt or chain in turn turns a pulley on an idler shaft. The idler shaft also has chain idler pulleys thereon and other pulleys or gears for driving with belts or chains corresponding pulleys or gears on chain storage shafts. These chain storage shaft carry chain storage sprockets. The main chain is reeved around the drive sprockets, with the load ends hanging down and the tail ends reeved around the idler pulleys and the chain storage sprockets. As the load ends of the main chain are hauled in or paid out, the tail ends are respectively fed into or out of chain storage bins beneath the chain storage sprockets.

Abstract: 2. A doppler shift rate detector system comprising: a first mixer; input ns for simultaneously applying a carrier signal and a doppler shifted sideband signal to said first mixer; first and second intermediate frequency amplifiers coupled to said first mixer; a mixer and an intermediate frequency amplifier stage coupled to said first and second intermediate frequency amplifiers; a mixer and oscillator stage coupled to said mixer and intermediate frequency amplifier stage; a frequency multiplier coupled to said mixer and oscillator stage; a second mixer coupled to said frequency multiplier; a delay line having an input coupled to said frequency multiplier and an output coupled to said second mixer, a narrow-band active filter coupled to said second mixer; an indicating means coupled to said filter; a low frequency switch coupled to said filter; a R. F. switch coupled to said first and second intermediate amplifiers; a sweep generator coupled to said R. F.

Abstract: A method of fabricating high performance transmission mode negative elect affinity III-V compound photocathodes which eliminates recurrent liquid phase epitaxial growth surface defects and solves the "wipe-off" problem incurred during the termination of the growth cycle.

Abstract: A variable height work surface easily and quickly adjustable from a low profile to a desired level by utilizing double acting scissor legs controlled by a screw drive mechanism.

Abstract: Transmission mode negative electron affinity gallium arsenide (GaAs) photthodes and dynodes with a technique for the fabrication thereof, utilizing multilayers of GaAs and gallium aluminum arsenide (GaAlAs) wherein the GaAs layers serve as the emitting layer and as intermediate construction layers and the GaAlAs layer serves as a passivating window.

Abstract: A passive mobile rangefinder and stereo viewer having at least two image verting television cameras each mounted on spaced apart, remotely controlled mobile supports with synchronous drives for azimuth and elevation control. Ranging components associated with each television camera, with data links to remote locations, provide continuous baseline variation data. A baseline selector and mixer data analyzer direct the video signals from the selected pair of cameras to the remote viewing location. A rangemarker in the observer's field of view or electronic correlation techniques provide the range data.

Abstract: A low void volume regenerator for use in a Vuilleumier Cooler made by bong alternating thin layers of copper and teflon and cutting radial slots into the regenerator.

Abstract: Transmission mode negative electron affinity gallium arsenide (GaAs) photthodes and dynodes with a technique for the fabrication thereof, utilizing multilayers of GaAs and gallium aluminum arsenide (GaAlAs) wherein the GaAs layers serve as the emitting layer and as an intermediate construction layer, and the GaAlAs layers serve as a passivating window and as an etch stop layer.

Abstract: Transmission mode negative electron affinity gallium arsenide (GaAs) photthodes and dynodes and techniques for the fabrication thereof, utilizing multilayers of GaAs and gallium alluminum arsenide (GaAlAs) wherein the GaAs layer serves as the emitting layer and the GaAlAs serves as an intermediate construction layer and/or as an integral part of the component.

Abstract: A photon sensing device utilizing a III-V negative electron affinity photthode grown on a window substrate support which simultaneously serves as a support and growth surface for the epitaxial growth of suitable cathode layers as well as the input window for the device.

Abstract: A rotary compressor in which a slice is cut back under one rotor flank and continuous groove is cut in the rotor housing cover adjacent the slice and intersecting it. The two adjacent rotor flanks can be ported to prevent pressure buildup therein. This arrangement permits the volume under the modified rotor flank to be in constant communication with the compressor output and produce a true sinusoidally varying pressure output.