Abstract: A purge assembly for mounting to a radiation thermometer, comprises a purge tube for mounting in front of the radiation thermometer. At least two axially spaced chambers are positioned about the purge tube, each pair of chambers being linked by a respective restrictive opening such that a difference in pressure exists between adjacent chambers in use. An upstream chamber with respect to the flow of purge fluid is connected to source of purge fluid such as air in use and a downstream chamber with respect to the flow of purge fluid opens into the purge tube via a swirl reducing system whereby purge fluid is emitted into the purge tube in use. The chambers are positioned such that fluid flows through the chambers generally towards the lens and then through the downstream chamber opening towards an outer end of the purge tube away from the lens.

Abstract: An arrangement for cleaning an optical window in an instrument such as a refractometer located in-line in a continuous or batch process, comprising a nozzle for spraying under high pressure a harmless cleaning medium onto the optical window. The nozzle is firmly fixed in a nozzle frame, the frame itself being firmly attached to the instrument in the vicinity of the optical window. The nozzle is recessed in the frame. The invention achieves cleaning of the optical window without mechanical parts or strong solvents, and does not require removal of the instrument from its in-line position.

Abstract: An apparatus for detecting the concentration of particles in a liquid includes a light-emitting portion for emitting examination light which is totally reflected-by a boundary surface contiguous to the liquid to be examined, a photosensor for receiving the totally-reflected light, a reference sensor for directly receiving the examination light, and a judgment portion for finding the reflectance from outputs of the two sensors to compute the particle concentration. In case that the liquid to be examined is lubricating oil of an engine, the concentration of carbon particles is calculated, thereby judging the deterioration of the lubricating oil.

Abstract: In an apparatus for detecting a property of a liquid, light is emitted from a light emitting element towards an interface between a liquid to be measured and a prism in an interface channel. Reflected light from the interface is received by a light receiving device, and a refractive index of the liquid is obtained from the total reflection critical angle. A cleaning member capable of contacting the interface by the flow of the liquid is provided. The cleaning member may be a small body or a floating member, a tape/string member having one end fixed to a channel wall, or a wiper swingable by the flow of the liquid.

Abstract: A cooling and cleaning unit incorporated in a welding position detector having a gas introducing conduit for introducing a single flow of a cooling gas under pressure into a hermetically sealed chamber of a casing for encasing therein a sensor unit of the welding position detector in the form of a convectional flow of cooling gas circulating around the sensor unit and removing heat from the sensor unit, a check valve unit having a gas inlet and a gas outlet and permitting the cooling gas under pressure to be discharged from the hermetically sealed chamber toward an outer face of a protective window of the welding position detector in the form of cleaning gas under pressure to thereby clean the outer face of the protective window while forming a gas curtain extending over the outer face of the protective window so as to prevent welding fumes and sputter from attaching to and depositing onto the outer face of the protective window of the welding position detector.

Abstract: A laser optical apparatus permits the use of a laser beam having a spectrum characteristic which substantially overlaps with an absorption band of oxygen, with a simple construction. Oxygen in a lens barrel of an optical system or a sealed space between lens barrels is absorbed by a deoxidation agent. Accordingly, even if a laser beam by an excimer laser using argon fluoride having a spectrum characteristic which substantially overlaps with the absorption of oxygen is passed through the optical system, the loss of laser energy by the absorption of oxygen, the generation of noxious gas and the swing due to the change of transmission are prevented.

Abstract: A condensation-free shower mirror includes a housing (11) holding a mirror (10) and a urethane water container (18). The water container, which is substantially the same size and shape as the mirror, is fitted against the back side of the mirror. The water container is fitted with a filling-cap assembly (12) to allow a water-tight seal. Two suction cups (14) extending from the back side of the housing allows the shower mirror to be easily mounted against a shower stall or a wall mirror. When the container is filled with hot water, it heats the mirror above the dew point of water, so that the mirror will remain condensation-free in a steamy environment. Because the shower mirror can be filled with hot tap water, it is portable so that it can be conveniently used in any bathroom.

Abstract: An apparatus for testing and evaluating the spray pattern of high pressure fuel injector elements for use in supplying fuel to combustion engines. Prior art fuel injector elements were normally tested by use of low pressure apparatuses which did not provide a purge to prevent mist from obscuring the injector element or to prevent frosting of the view windows; could utilize only one fluid during each test; and had their viewing ports positioned one hundred eighty (180.degree.) apart, thus preventing optimum use of laser diagnostics.

Abstract: A flexible fog free mirror device for contact attachment and support on a planar surface is disclosed. A three-layered structure includes a first film sheet having an organic coating of anti-fog material on one side. The other side of the sheet has an adhesive coating for laminating the sheet to a first side of a second film sheet. The second side of the second sheet has a reflective metal coating for providing a mirrored finish. The reflective metal coating is laminated to a first side of a cling vinyl film sheet. The vinyl sheet enables the three-layer structure to contact adhere to the planar surface. In an alternate embodiment, a two-layered structure includes the first film sheet and the second film sheet for releasable attachment to an existing mirrored surface. The first film sheet has the organic coating of anti-fog material coated on the one side, the other side of which is coated with a pressure sensitive adhesive.

Abstract: An automobile rear-view mirror includes a casing to hold a mirror, a flow guide member pivotally disposed at the top of the casing, a rotary vane disposed inside casing, a gear box fastened to the casing at one side and having a first transmission gear driven by a first motor thereof to turn the flow guide member in either direction for allowing outside currents of air to be guided through an elongated opening on the casing toward the mirror to remove moisture from the mirror, and a second transmission gear driven by a second motor thereof to turn the rotary vane causing it to induce currents of air from vent holes on the bottom of the casing into the casing and permitting the induced currents of air to be guided by an angle flange inside the casing toward the mirror to remove moisture from the mirror.

Abstract: An exhaust gas particle sensor has an inlet tube and a sensing region having different cross sections and linked by a transition region including a number of baffles arranged so that the time taken for gas to travel from the inlet tube to the sensing region is substantially independent of the position of the gas across the inlet tube. The sensor operates by measuring the opacity of the exhaust gas using a light beam which passes in and out of the sensing region through windows, the exhaust gas being prevented from impinging on each window by a double air curtain.

Abstract: A ring lens assembly for an optical viewing device is presented. The ring lens assembly includes a ring shaped lens adapted for mounting at the end of an optical viewing device for viewing a remote location. The optical viewing device comprises an objective lens section, a relay lens section and an eye piece section. Further, the optical viewing device has an inner tube wherein the optics is housed and an outer tube. A plurality of optical fibers are disposed between the inner and outer tubes to provide illumination of the field of view. The ring shaped lens is a negative curvature lens or a prism-like lens for increasing the field of illumination. Alternatively, the lens is a flat lens and the optical fibers twisted to increase the field of illumination. Also, a cleaning tube is disposed between the inner and outer tubes. The cleaning tube terminates short of the end of the inner tube. An opening or channel is formed at the end of the inner tube adjacent to the cleaning tube.

Abstract: A motor vehicle rear view mirror wiper device comprising a rear view mirror case connected to the body of a car by a contracting member and having a slide holder mounted thereon to hold a lens, two slides mounted on said slide holder and moved by a piston and a cross wire to carry a wiper blade in cleaning the lens.

Abstract: An automobile rear-view mirror including a ventilation box attached to the mirror at an inner side adjacent to the automobile for passing a current of air during the movement of the automobile, a flow guide member attached to the mirror thereof at the bottom for guiding the current of air toward the mirror so as to remove moisture from the mirror, and a motor drive controlled to turn the flow guide member on a longitudinal axis thereof to change its angular position relative to the mirror.

Abstract: A mirror for use in a steamy environment such as a shower stall. The mirror has a recess for holding a cylindrical can of shaving cream while exposing half of the can for easy grasping. Either a magnet or straps may be used to hold the can in the recess. A water channel has a push button valve for controlling water flow. The stream of flowing water equalizes the temperature of the mirror with the surrounding environment. A fitting at the bottom of the mirror may be turned in order to direct a stream of water in any suitable direction to wash away shaving debris from a razor. The water supply for the mirror may be obtained from an existing shower head supply pipe and may be diverted exclusively to the mirror, so that when the mirror is in use, water flows only when requested by the user.

Abstract: The invention relates to a windshield deflector shield for deflecting insects and debris above the hood and windshield of a vehicle and for increasing the driver's field of vision. The deflector shield includes a lens coupled to the middle deflector section for increasing the field of vision in front of the vehicle. The deflector shield may also include rearview mirrors coupled to the ends of the deflector shield for increasing the driver's field of vision at the sides of the vehicle.

Abstract: Disclosed is a device for demisting the surface of a bathroom mirror using hot air supplied by a portable hand-held hot-air blower, and including air-conducting apparatus having duct elements that are detachably mounted along the perimeter of the mirror surface using suction cups or the like. Each duct element has a plurality of spaced-apart nozzles or apertures, and a tubular inlet member is pivotally attached in flow communication with the air-conducting apparatus, and is adapted to slidably and removably receive the tubular exhaust nozzle of the portable blower such that hot air supplied by the blower will exit the duct nozzles and move across the surface of the mirror so as to remove water condensate from the mirror surface.

Abstract: An apparatus for viewing the atomization of liquid metal is disclosed. A nozzle for atomizing liquid metal having a cylindrical plenum, and a melt guide tube extending axially therethrough to a melt exit orifice. The plenum defines an inner chamber coupled with an atomizing gas orifice spaced from the exit orifice and configured to provide an annular jet of atomizing gas converging in an atomizing zone extending below the exit orifice The plenum having an inner sidewall and an outer sidewall defining the inner chamber therebetween. The inner sidewall extends below the exit orifice so that the inner sidewall is spaced from the atomizing zone. A cylindrical sleeve extends through the outer sidewall to a first end in the inner chamber. A camera mounted in the sleeve has a field of view extending from the first end. A transparent window is mounted to seal the first end. The sleeve is positioned so the field of view extends through the atomization zone.

Abstract: An optical recording and/or reproducing apparatus includes a recording and/or scanning device fitted with a lens. A current of air which blows away dust that would otherwise impair the quality of reproduction can be directed over the lens by ribs on the underside of a turntable.

Abstract: An aerodynamic vehicle side mirror head of the vertically elongated rectangular type commonly used on large vehicles such as trucks includes an aerodynamically shaped mirror housing having a reflecting surface mounted to a rearward facing surface thereof and a set of cambered, airfoil-shaped, turning vanes with an upstream vane located along the leading vertical edge of the mirror housing on the side thereof closest to the vehicle can and having an outlet disposed to direct airflow exiting therefrom laterally onto the mirror surface and a downstream vane located along the trailing vertical edge on the opposite side of the mirror housing and having an outlet disposed to direct air flowing therethrough in a substantially downstream direction.

Abstract: A power supply device adapted to supply power to a pair of electrodes formed on opposite end surfaces of an ultrasonic vibrator. The device has a circuit layer arranged on a flexible base. The circuit layer has a pair of supply electrodes arranged at its one longitudinal end and a pair of end connections arranged at the other longitudinal end. A pair of conductive layers electrically connect the supply electrodes and the end connections, respectively. Each supply electrode has an inner surface of substantially the same shape as the end surface of the ultrasonic vibrator, the inner surface being joined electrically and mechanically with the electrode of the ultrasonic vibrator. The flexible base has an electrode base covering an entire outer surface of each of the supply electrodes, and a circuit base holding the conductive layers. A shield layer may be disposed on the flexible base in order to screen electromagnetic radiation from the circuit layer.

Abstract: A rotating window mounted directly to one side of a stationary, viewing window or panel without the need to cut a hole in the stationary window. The rotating window faces toward the working or weather-exposed area and slings off any water or other debris that contacts the rotating window to maintain clear visibility through the stationary window. The rotating window further comprises a means for drawing air through the area in between the rotating window and the viewing window so that moisture does not collect on and fog up either window.

Abstract: The invention comprises a rear view mirror having a surrounding frame with a sleeve mounted vertically along one vertical edge of the frame. The sleeve has a slot and a screw is mounted within the sleeve with a pair of spiral grooves of opposite pitch connected together at their upper and lower edges to form an oscillating path. A ring is slidably mounted on the screw with a pin on the ring engaging the screw in one of the grooves. A motor drives the screw to cause the ring to oscillate vertically in the sleeve and a wiper has an arm connected to the ring through the slot in the sleeve, so that the oscillation of the ring on the screw causes the wiper to oscillate upward and downward on the mirror to wipe the mirror to remove rainfall.

Abstract: A purging air flow system that causes air to pass over a pyrometer lens or window to keep it clean and free from particulate contaminants has an annular, continuous slot for air inlet around the periphery of the lens to permit flow of air across the lens without any obstructions in the path of flow inwardly from the outer edge of the lens. An asymmetric flow pattern is established across the lens surface, either by having a differential size slot at different peripheral portions of the peripheral edge of the lens or window, or by providing a radial swirl about the axis of the window so that when the air goes through the slot, the tangential velocity creates a moving asymmetric flow pattern on the window surface.

Abstract: A method and apparatus for removing unclear matter on an optical element used with a radiation beam is disclosed. A filter is used to introduce light of a desired wavelength into a chamber in which the optical element is accommodated; a gas supplying device is used to supply a reactive gas which is reactable with the unclear matter on the surface of the optical element; and a vacuum-evacuating device is used to vacuum-evacuate the inside of the chamber.

Abstract: Apparatus for preventing the deposition of dust on a surface, for example, the transparent surface of an optical instrument, is provided. The apparatus includes a tube and a hollow porous frustrum. The surface is placed inside the tube. The small opening of the frustrum is placed adjacent the surface, and the large opening of the frustrum is sealed against the inner wall of the tube. Compressed gas is flooded into the tube, passes through the frustrum and sets up a laminar gas flow away from the surface, thus preventing the deposition of dust on the surface.

Abstract: A particle monitor for a processing chamber exhaust line is disclosed which incorporates exhaust line heating, purge gas flow over surfaces such as optical windows in the exhaust gas line, and a thermally and electrically insulating particle monitor mounting arrangement. The features collectively protect the particle monitor from electrical disturbance and from the heated inlet and maintain the optical surfaces clean and free of depositions from the exhaust gas flow for an extended period. The arrangement also suppresses etching of the optical surfaces.

Abstract: A side mounted rear view mirror assembly for a motor vehicle is provided with a small air deflector integral therewith disposed upstream of and parallel to a forwardly convex mirror housing of the assembly, the deflector being spaced therefrom a sufficient distance to cause the air stream to be smoothly channelled past the lateral edges of the mirror housing. The "see through" open portion of the mirror assembly between the deflector and the mirror housing is provided with an amber light reflecting side marker surface on the front of the mirror housing and a low intensity light disposed on the rear side of the air deflector and shining light onto the light reflecting surface of the mirror housing to become a side marker to indicate the side of the vehicle. The rear side of the mirror housing is provided with a conventional image reflecting surface to reflect a rear side view to the operator.

Abstract: In an aero-optical interface for an aircraft optical aperture, the separation of the upstream boundary layer from the edge of the aperture creates a region of turbulance which persists downstream over the full area of the aperture. This invention promotes an early develpment of a steady velocity profile at the upstream aperture edge which is approximately the same as a stable, self-similar shear flow velocity profile over the entire aperture. This is accomplished by thickening the boundary layer upstream of the aperture, and blowing a curtain of air across the aperture from its upstream edge at the point of separation of the boundary flow. This produces a shear flow region foot that causes the overall velocity profile to be equal to a stable self-similar free shear layer.

Abstract: A novel rearview directional control device for a rearview mirror, either a conventional rearview mirror or a self-cleaning rearview mirror, is provided. The present rearview directional control device for a conventional rearview mirror includes a mirror body mounting therein a spherical plain bearing having an inner ring securing therein a sleeve coaxially fixing thereto a mirror disk having a mirror, an eccentrical wheel engaging with the sleeve and having a rotating axis non-parallel to the shaft axis in a manner that when rotated, the shaft axis will be inclined.

Abstract: A target is viewed by means of a coherent fiber optic bundle comprising a two dimensional array of fibers. A one dimensional linear light detector array, fixed relative to the coherent fiber optic bundle, receives an image of the target and detects light through only a slice of the image to provide dimensional information with respect to the edges of the target. A polyfurcated bundle may view different linear dimensions of the target and allow for the use of the single linear array to detect the multiple dimensions. Electronics provide for detection of target edges by means of a curve fitting technique, computation of dimensions and control of light source intensity and exposure time. Illumination is by a noncoherent light source and a collimator positioned behind the target or by a fiber optic bundle and a light guide plate positioned to illuminate the target from the front.