Abstract: Lamp systems, lamp assemblies, and methods of operating a lamp system are provided. The lamp system includes a lamp head and a lamp assembly having at least one end fixture for securing the lamp assembly in the lamp head. A data carrier is mounted to lamp assembly. The data carrier is configured to store an identifier, or operational data, or data representing the number of hours of operation, or data representing the lamp type associated with the lamp assembly, or any combination thereof. A data reader is configured to read information stored on the data carrier. A controller is operable to process the information read from the data carrier. The data carrier may alternatively store data representing the number of hours of operation and the lamp system may further include a data writer for updating the stored data to reflect operation of the lamp assembly.

Abstract: An apparatus for determining the weight of a flowable material in a vessel, which includes a support and a deformable member attached to the support. The deformable member includes a deformation measuring device to detect the extent of deformation caused by the flowable material as the material flows through the deformable member. The deformable member determines the weight of the flowable materials flowing into or out of the vessel.

Abstract: A method of assembling an electromagnetic flow sensor which includes a length of tubular material (referred to herein as a “spool”) (1) intended to be fitted with a tubular insert (2) that is anchored relative to the spool once the spool is fitted into the pipeline. Sealing is preferably achieved by means of extensions of the insert material (typically elastomer) intended to be trapped between end fittings of the spool and abutting ends of the pipeline and secured when the spool is connected in fluid-tight manner to the pipeline. The insert is preferably reinforced against deformation under the application of pressure, and this can be achieved by incorporating one or more bands (4) of suitable material into the insert.

Abstract: A method and apparatus for metering and dispensing an active ingredient, such as an insecticide, fumigant, fertilizer or room freshener. The active ingredient is placed in a container (6) and a pressurised propellant is subsequently introduced from a source (1) via conduits (3, 9). The propellant serves to absorb the active ingredient which is dispersed from the container via conduit (5) through a dispensing outlet (8) so that the active ingredient is dispersed in an airborne dispersion. In an ejector (4), a pressure differential is created across a propellant inlet port (4a) which is sufficient to draw the active ingredient from the active ingredient container (6) but is less than the pressure differential required to cause a cooling effect in the mixing chamber (4) and is less than that pressure differential that gives rise to an erratic dispersion of the active ingredient from the dispensing outlet (8).

Abstract: A method and apparatus for metering and dispensing an active ingredient, such as an insecticide, fumigant, fertilizer or room freshener. The active ingredient is placed in a container 6 and a pressurized propellant is subsequently introduced from a source 1 via conduits 3, 9. The propellant serves to absorb the active ingredient which is dispersed from the container via conduit 5 through a dispensing outlet 8 so that the active ingredient is dispersed in an airborne dispersion. In an ejector 4, a pressure differential is created across a propellant inlet port 4a which is sufficient to draw the active ingredient from the active ingredient container 6 but is less than the pressure differential required to cause a cooling effect in the mixing chamber 4 and is less than that pressure differential that gives rise to an erratic dispersion of the active ingredient from the dispensing outlet 8. The system is particularly suitable for the spraying of insecticides into large spaces such as warehouses and supermarkets.

Abstract: Digital data processing unit includes two SLMs assembled back-to-back with a common photoreceptor, to form a bidirectional spatial light modulator (BSLM) which facilitates the flow of data in the forward and reverse directions. An image can be written from the left side of the BSLM and read from the left or right side of the unit. An image can also be written from the right side and read from the right or left or both sides of the unit. The photoreceptor sums the light image intensities when data is concurrently written from both sides into the photoreceptor.

Abstract: A method for transferring a dielectric mirror prepared on an optical flat replication substrate to a utilization device having a nonflat surface. In order to separate the replication substrate from the mirror after the mirror has been cemented to the device at room temperature and the cement allowed to cure over an extended time period, the composite assembly is inserted into a fixture which provides a buckling force to the center of the replication substrate to cause the replication substrate to be peeled from the mirror.

Abstract: An impact sensing arrangement comprises a pair of bodies that are separated from each other and arranged so that an impact on one of the bodies will cause it to move toward the other body, and an elongate piezoelectric pressure sensing element that is positioned between the bodies, the pressure sensing element being mechanically coupled to each of the bodies over at least one quarter and preferably at least two thirds, the width of the sensing element.The arrangement is particularly suitable for use in an ordance projectile in which case the sensing element 10 may extend in a loop around the projectile between the nose 3 and body 2 of the projectile.

Abstract: A micromirror spatial light modulator having an associated silicon photodiode for photoaddressing a micromirror array, and a readout system for providing intensity-to-position encoding and for providing a color image from coded monochromatic input light.

Abstract: A spatial light modulator in which the photoreceptor is a capacitively coupled semiconductor in the form of a silicon-silicon dioxide-transparent electrode structure.

Abstract: A differentiating spatial light modulator device in which a photoreceptor and an electro-optic crystal are isolated by a dielectric mirror. The electro-optic crystal is configured to have low or zero longitudinal response, yet is sensitive to transverse electric fields. The fringe field generated by the photoreceptor (photodiode) modultes the crystal birefringence. Readout via a polarizing beamsplitter gives an output light related to the spatial gradient of the input light. In a liquid crystal embodiment of the invention, reversal of the applied voltage gives a driven off state which speeds the erasure. Storage is possible in the smectic liquid crystal phase.

Abstract: A spatial light modulator having a lattice of microgrooves formed on the surface of the silicon photodiode nearest the electro-optic cyrstal to prevent lateral charge transfer at this surface.

Abstract: An electron bombarded silicon spatial light modulator in which electrons leaving a microchannel plate amplifier are accelerated to penetrate a silicon photodiode forming electron-hole pairs therein and resulting in significant current gains.

Abstract: Automatic impedance matching apparatus in which a matching unit is connected between a radio frequency source and a load and which comprises variable capacitors and inductor, the capacitors being varied by stepping motors to match the impedance presented to the source to the impedance of the source. The stepping motors are controlled by a circuit which generates trains of pulses corresponding to the forward wave voltage and the reflected wave voltage on a line between the source and the matching unit and provides a train of pulses corresponding to the ratio of the voltages. The pulse rates of trains of pulses corresponding to the ratio, before and after a capacitor is varied, are compared, and the sign of the difference between the pulse rates is used to select a motor and step it in the direction which will cause the variable capacitor connected thereto to change its reactance in a direction which will increase the ratio between the forward and reflected wave voltages.

Abstract: An electrostatic shield for an induction coil of a short-wave diathermy unit in the form of radial conductors arranged in a plane with a common point at their center which is grounded. The shield is positioned perpendicularly to the axis of the induction coil between the patient and coil.

Abstract: A pair of electrodes are energized in opposite phase by a radio frequency electric source having a common connection to said electrodes differing in length by a 1/2 wave length, and electrode isolation when unenergized is obtained utilizing lengths of connecting cable from such common connection which are odd multiples of a 1/4 wave length, grounding the common connection.

Abstract: A method for inducing local hyperthermia in treatment of a tumor by short wave diathermy which involves moving an induction coil over the portion of the body containing the tumor such that the axis of the coil constantly transects different portions of the tumor.