Abstract: A flowmeter with an optical pick-off includes a turbine and a swirl generating impeller having magnets mounted on their periphery. Positioned on the exterior of the flowmeter housing in line with the magnets are monolithic Faraday effect optical switches. Each time the magnets pass by its associated Faraday switch the switch is actuated to produce an output pulse.

Abstract: An angular momentum mass flow meter with an optical fiber readout extending into and out of the flowmeter housing.

Abstract: A liquid crystal display which incorporates auxiliary repair lines which cross over the main address lines of the display. The repair lines can be electrically shorted to address lines at their crossover points to repair open circuited address lines. The repair may be driven from drive pads on either end to supply signals to otherwise open-circuited address lines. After a repair line has been short circuited to an address line, the remaining portion of the repair line is cut off to form a second repair line drivable from the driver pad connected to their portion of the line.

Abstract: Leadless chip carriers supporting the row and column driver circuitry for a Liquid Crystal Display are secured directly to a mulitlayer, flexible connector. The flexible connector is attached to the conductive pads on the edge of a Liquid Crystal Display Panel and is bent perpendicularly to the plane of the Display to provide a space efficient, modular, hermetically sealed packaging arrangement.

Abstract: A monolithic optical switch has one or more Faraday effect polarization rotation layers of bismuth doped gadolinium deposited on opposite sides of an optically inactive substrate. A non-magnetic reflecting surface is deposited on one side of the substrate over the rotator layer. A polarizing pair (crossed polarizer and analyzer elements) is deposited in a side-by-side arrangement over the Faraday rotator layer on the other side of the substrate. Plane polarized light from an optical fiber passes through the polarizer element, the rotator layer(s) and the substrate to the reflecting surface and is reflected back to the analyzer element on the other side. The presence of a magnetic field results in the rotation of the plane of polarization of the light so that passage of the reflected light through the analyzer to an output optical fiber depends on the presence or absence of the magnetic field.

Abstract: A collimated light source for Liquid Crystal Display includes a light integrating sphere and an internally reflective light pipe means for producing a relatively collimated light beam for illuminating a liquid crystal display. Compensation for offset or skew angle of the collimated light near the edge of the light pipe is provided by a secondary collimator taking the form of crossed cylindrical lenses.

Abstract: A laser flash lamp triggering circuit is connected in parallel with the flash lamp and between the flash lamp and the flash lamp power supply. A impedance element is connected between the parallel trigger circuit network and the pulse forming network in the power supply. The impedance element preferably in the form of a saturable reactor has a high impedance to the high voltage trigger pulse and a low impedance to the current flow from the storage capacitor forming part of the pulse forming network. This invention relates to a laser flash lamp power supply and, more particularly, a triggering circuit for the flash lamp which has low power dissipation.

Abstract: Cleansing of a pyrometer lens is achieved by directing purge air spirally inward over the lens surface. The vortex formed by the spiral air flow is highly effective in removing contaminating matter from the lens surface. A light blocking or masking element is attached to the center of the lens where the purge air stagnates to prevent deposit of particles or other material on the center portion of the lens. This invention relates to a temperature sensing device and, more particularly, to an optical pyrometer and a method for effectively cleaning the same.

Abstract: This invention relates to a collimated light source for a flat panel liquid crystal display which uses a high intensity light source positioned in an integrating sphere. One or more tapered light pipes have their narrow end(s) positioned in an opening in the integrating sphere. Light from the integrating sphere is internally reflected in the light pipes(s) to produce a relatively collimated output beam which is projected onto one surface of the liquid crystal panel display.This invention relates to a light source for a liquid crystal panel display and, more particularly, to a collimated light source utilizing light pipes and an integrating light sphere.

Abstract: A boresight correction system is disclosed that determines the existing error between an aircraft gunsight and its gun systems while prescribed aircraft maneuvers are performed and which automatically corrects the gunsight system to compensate for this error. The system includes a sensor for detecting bullet positions, hardware that determines the bullet positions relative to the gun boresight, a digital processor to determine the above mentioned error, and to correct the gunsight system according to this error, and a non-volatile memory in the digital processor to store a corrected boresight position.

Abstract: The present invention deals with an optical transmission filter for effecting differential phase delay upon light in a beam polarized in a P dimension, as a function of position within the filter aperture. The filter employs two lenses of birefringent material, the crystal optic axes of the respective lens materials being oriented in mutually orthogonal positions and at a 45.degree. angle to the P dimension. The lenses have their adjacent surfaces respectively concave and convex with the same radius of curvature and their non-adjacent surfaces flat.The phase response of the filter is a function of the radial distance of a beam element from the filter axis with spherical lenses and a function of a linear coordinate distance from the filter axis with cylindrical lenses. A two-part construction for one lens, which permits adjustment of the difference in center thicknesses between the two lenses, allows adjustment of the differential phase delay with respect to a spacial reference.

Abstract: Electrical connectors of the Euro connector type for mounting the male and female connectors of different heights with standard mounting guide rails. Mounting of the different size male and female connectors with standard size guide rails is achieved by means of a suitable spacer which mates with the guide rail when a shorter male connector is used.This invention relates to a Euro connector assembly, and, more particularly, an assembly in which male and female connectors of different heights may be mounted utilizing a standard height guide.

Abstract: A heated transflective liquid crystal display device has the heating element positioned behind the transflector to keep the heater out of the reflective light path. This construction significantly improves brightness of the display in the reflective mode.This invention relates to liquid crystal device, and more particularly to liquid crystal displays incorporating a heating unit.While the instant invention will be described in the context of cell of the guest-host variety, the invention is by no means limited thereto. The invention is equally applicable and useful in liquid crystal display utilizing a liquid crystal solution of the twisted nematic type and suitable polarizers.

Abstract: A heated transflective liquid crystal display device has the heating element positioned behind the transflector to keep the heater out of the reflective light path. This construction significantly improves brightness of the display in the reflective mode.The heating element is positioned between the cell transflector and a temperature sensing thermistor. The thermal gradient of the path between the heating element and the thermistor matches that of the path between the heating element and the liquid crystal cell. As a result, the trip point of the heating element can be set much closer to the minimum cell operating temperature than hitherto possible thereby reducing the power consumption of the display.This invention relates to liquid crystal display devices, and more particularly to liquid crystal displays incorporating a heating unit.While the instant invention will be described in the context of a cell of the guest-host variety, the invention is by no means limited thereto.

Abstract: A halogen such as chlorine is produced by the electrolysis of an aqueous solution of a hydrogen halide such as hydrochloric acid in an electrolysis cell having anolyte and catholyte chambers separated by a solid polymer electrolyte in the form of a stable, selectively permeable, hydrated ion exchange membrane. Catalytic electrodes in the form of fluorocarbon bonded, thermally stabilized, reduced oxides of platinum group metals are bonded to at least one surface of the membrane and an aqueous hydrochloric acid solution is brought in contact with the bonded anode to generate chlorine at the anode and hydrogen at the cathode.

Abstract: A halogen such as chlorine is generated by the electrolysis of aqueous halides in an electrolysis cell which includes an anode and a cathode separated by an ion transporting membrane. At least the cathode, which is a mass of noble metal catalytic particles and particles of a suitable binder, is bonded to the surface of the membrane. An oxygen containing gaseous stream is brought into contact with the bonded cathode to depolarize the cathode and prevent or limit discharge of hydrogen at the cathode, thereby substantially reducing the cell voltage.

Abstract: A beam repositioning system for a calligraphic display system is described in which beam repositioning time is minimized. When the beam repositioning signal is applied to the deflection circuits of the CRT, the deflection signal, either yoke current or deflection voltage, is sensed and a "beam slewing" logic signal is generated as long as the deflection signal is changing indicating that the beam is being repositioned. This logic signal activates a control circuit which generates a "hold" signal for the symbol generating or "stroke" circuits which persists as long as the logic signal remains at the logic "one" level. When the beam is repositioned as indicated by the fact the deflection signal no longer changes, a logic "zero" signal is generated which actuates a first timing circuit which generates a first control signal if the logic signal remains at the zero level for a first predetermined period. This initial period is to allow beam settling and to avoid preturbations due to beam overshoot or undershoot.