Abstract: An inspection lamp for detection of a fluorescent material which absorbs electromagnetic energy in a specific excitation frequency band and which emits electromagnetic energy in a specific fluorescent emission frequency band within the visible light spectrum. The lamp includes a bulb housing, a light source within the bulb housing, and a dichroic filter. The dichroic filter is adapted to transmit electromagnetic radiation in the excitation frequency band of the fluorescent material and reflect electromagnetic radiation in the fluorescent emission frequency band of the material.

Abstract: An infrared energy reflecting enamel composition comprises a ground coat of enamel on a substrate and embedded TiO.sub.2 particles in the ground coat of enamel. The infrared reflecting enamel composition has an infrared energy reflectivity value of at least 80%. A method for manufacturing the composition is also disclosed for embedding the TiO.sub.2 in the enamel.

Abstract: An infrared energy cooking and heating apparatus comprises an infrared layer or reflective coating, particularly on inner panels of ovens or other cooking devices. The coating is preferably an enamel and reflects the infrared energy to the food being cooked and heated. In particular, the infrared cooking apparatus are substantially faster than such processes in conventional ovens, and offer improvements in foodstuff cooking times. The enamel comprises metal oxide particles that enhance the infrared energy reflectivity of the enamel. Further, the metal oxide particles in the enamel can be formed in several ways so as to enhance the reflectivity.

Abstract: A radiation apparatus comprising a radiation source and a filter arranged in an optical path, said filter comprising two transparent filter discs which are arranged substantially in plane-parallel fashion relative to each other and which are held with their surrounding edges in a frame made of a material of good heat conduction, the filter discs and the frame defining a closed cavity which has provided therein a medium for selectively influencing the radiation spectrum. The frame is divided substantially in a direction transverse to the filter axis into first and second frame halves in such a manner that the one filter disc is arranged on the first frame half at the side facing the cavity and the other filter disc is arranged on the second frame half at the side facing the cavity.

Abstract: An ultraviolet sterilization unit having a housing attached to an air heating and cooling system. The housing including two apertures into which lamp cartridges are inserted. The lamp cartridges carrying ultraviolet lamps operating in a frequency capable of sterilizing air within the system. The cartridges are configured to automatically de-energize the lamps when a lamp cartridge is removed from the housing. When the sterilization unit is a multiple lamp system, when one of the lamp cartridges is removed all lamps are de-energized. The de-energizing of the lamps occurring before a user will view the lamp.

Abstract: A device which is designed to simultaneously store and sterilize the head of a stethoscope within the pocket of a user during periods of non-usage. The small sterilizer is a box-shaped unit constructed of glass and plastic which fits into a shirt or jacket pocket, and which has a U-shaped lip which leads into an opening for receiving the head of the stethoscope. Beneath the lip is a switch that operates on contact with the stethoscope head to activate the unit, and the unit is powered by a small pen light batteries. An ultraviolet light is located proximate the U-shaped lip and delivers ultraviolet light rays through a circular transparent window aligned with the stethoscope head, and a clip on the back of the unit enables it to be easily attached to a user's pocket.

Abstract: A UV irradiation apparatus, which includes a UV lamp installed in a chamber for generating UV rays; a vacuum chuck installed below the UV lamp for supporting and moving a wafer; and, a reflector surrounding the UV lamp for concentrating UV rays on the vacuum chuck. The apparatus further includes heating blocks for controlling the temperature at both sides of the vacuum chuck. Thus, it is possible to maintain an essentially constant temperature around the wafer supported by the vacuum chuck. As a result of the temperature control, when a protection tape attached to the front side of the wafer is irradiated with UV rays, an adhesive of the protective tape can be effectively degraded by a chemically reaction under optimum conditions, to thereby easily detach the protection tape from the wafer.

Abstract: An infrared (IR) radiation emitting device comprises a sinuous foil resistive element (1) which emits IR radiation when heated by an electric current. The device is configured so that the resistive element (1) emits radiation with a spatial intensity which substantially possesses a single axis. The resistive element (1) may, for example, be configured as a substantially planar spiral (3).

Abstract: An irradiator includes an elongated housing having an interior recess opening outwardly along a longitudinal length of the housing. A plurality of generally planar relatively thin ribs are supported within the recess substantially transverse to the longitudinal axis of the housing and define laterally spaced substantially symmetrical contour surfaces operative to support reflector members. The ribs are readily interchangeable to support reflector members so as to establish generally parabolic, semi-circular or elliptical reflector profiles. A pair of lamp holder assemblies are supported within the housing recess for supporting a source of light energy, such as an elongated ultraviolet light bulb, intermediate the contour surfaces to enable focused or nonfocused irradiation of energy. In one embodiment, shutters as provided to substantially preclude irradiation when in closed positions.

Abstract: A respirator circuit comprises a breathing tube, such as an endotracheal tube, having a proximal end, a distal end, and a lumen extending between the proximal and distal ends. The lumen defines at least a portion of the respirator circuit. A ventilator tube is in fluid communication with the proximal end of the breathing tube end and defines a portion of the respirator circuit. One or more light sources capable of emitting ultraviolet radiation irradiates at least a portion of the respirator circuit, thereby sterilizing the respiratory circuit.

Abstract: A tumor treatment apparatus is provided including a light source which emits a bundle of light including ultraviolet radiation, visible radiation and infrared radiation. Also provided are an infrared radiation filter which filters infrared radiation, a visible radiation filter which filters visible radiation, and an optical fiber which transmits a bundle of light transmitted through the infrared radiation filter and the visible radiation filter toward an affected part of a patient to be treated.

Abstract: An apparatus for biological treatment comprises a body, a light source inside the body, a concave mirror mounted in an axial guide on a side of the body, an optical filter on the opposite side in an opening, a fan between the source and the concave mirror, two reflector cylinders positioned symmetrically between the source and the optical filter and rotating in opposite directions, and a rotary shalter disc at the same location as the optical filter and with orifices positioned coaxially with respect to the optical filter creating the effect of a light flux made up of the rays reflected by the mirror and the fan blades after the latter have received them from the source and the reflector cylinders. The apparatus is used for various biological treatment such as the treatment of viral diseases, rheumatic states, and the like.

Abstract: A lightweight portable germicidal air filter for home and personal use is disclosed. The air filter includes a cabinet which houses an electrostatic air filter, an ultraviolet lamp and a parabolic reflector or a convex lens for focusing the ultraviolet radiation emitted by the lamp on an upstream side of the air filter. The reflector or the lens are constantly oscillated to systematically sweep the upstream side of the filter with germicidal levels of radiation. A fan located adjacent the downstream side of the filter draws air through the filter and impels it out through areas for air outlet in the sidewalls of the cabinet. The advantage is a simple, lightweight germicidal air filter with few moving parts which is inexpensive to manufacture.

Abstract: An improved IR radiation source is provided by the invention. A radiation filament has a textured surface produced by seeded ion bombardment of a metal foil which is cut to a serpentine shape and mounted in a windowed housing. Specific ion bombardment texturing techniques tune the surface to maximize emissions in the desired wavelength range and to limit emissions outside that narrow range, particularly at longer wavelengths. A combination of filament surface texture, thickness, material, shape and power circuit feedback control produce wavelength controlled and efficient radiation at much lower power requirements than devices of the prior art.

Abstract: A scene projector has spaced-apart optical fibers transmitting electromagnetic radiation by total internal reflection to a like number of spaced-apart absorber structures that are each mounted on the opposite end of one of the optical fibers. The absorber structures absorb the transmitted radiation, convert it to heat, and emit radiation at longer wavelengths, primarily IR. Optionally, a coating having greater emissivity at the longer wavelengths of radiation may be added to the structures to increase radiation at these longer wavelengths. Each optical fiber and absorber structure has a degree of thermal isolation from the adjacent fibers and structures to increase spatial thermal resolution as compared to contemporary monolithic imaging devices. Since the scene projector is optically driven, bulky electronic addressing lines and associated control structure are not needed.

Abstract: Boresighting apparatus includes a laser, a thermal target having an absorbent surface for receiving the laser beam and converting it to a heat spot of infrared radiation, and an optical device for receiving and optically displaying the heat spot. The thermal target is anisotropic, having a low thermal conductivity in the direction laterally of the surface and a high thermal conductivity in the direction perpendicular to the surface, so as to increase the duration of the heat spot with a minimum lateral spreading.

Abstract: A method of irradiating a biological specimen with ultraviolet, in particular a polynucleotide specimen selected from DNA or RNA, or optionally a protein. In the case where the specimen is DNA or RNA, or potentially proteins, the specimen is irradiated to cross-link the specimen to a substrate. In the case where the specimen is DNA, the specimen can also be irradiated to form thymine dimers. The method uses an apparatus which permits relatively precise control of the total ultraviolet dose received by the specimen, despite any changes of ultraviolet flux from the lamps which may occur from during any one experiment, or between a number of experiments. Thus, the method allows relatively highly reproducible results to be obtained.

Abstract: The disclosed invention relates to treatment of agricultural products such as wheat with infrared radiation, particularly wheat infected with T. indica Teliospores, to kill the spores. The agricultural products are treated with infrared radiation generated by ceramic heating elements at intensities of 5-34 KW/m.sup.2 for varying time periods.

Abstract: The present invention utilizes a plurality of ultraviolet lamps to sterilize containers being advanced along a conveyor system. The ultraviolet lamps are disposed transverse to the advancement of the containers as are the reflectors corresponding to each of the lamps. The reflectors are in direct contact with a cooling manifold which prevents the overheating of the apparatus. In thermal contact with the cooling manifold are temperature detectors which provide warning signals to operators, or can generate a signal to deactivate the lamps. The cooling manifold may be cooled by a circulating fluid. The reflectors may be cooled by a flow of air through a pressurized chamber. The pressurized chamber is defined by the reflectors and transparent plates. The transparent plates substantially enhance the transmission of light having a wavelength of 254 nanometers.

Abstract: An illuminator for photodynamic therapy includes a bulb, a condenser lens assembly and a filter assembly. The filter assembly includes the following components in an optical path: (1) a high-pass filter to filter out light having wavelengths below a first wavelength value; (2) a low-pass dichroic filter to filter out light having wavelengths above a second wavelength value; and (3) a dichroic mirror which reflects light having wavelengths between the first wavelength value and the second wavelength value and which transmits infrared light. An exit lens assembly directs light transmitted through the high-pass filter and the low-pass dichroic filter and reflected by the dichroic mirror onto a patient for photodynamic therapy. The condenser lens assembly and the exit lens assembly scramble the beam to ensure that the patient is illuminated with light which is highly uniform in both intensity and spectral characteristics (color) throughout the illuminated area.

Abstract: A flexible tube for providing a radiation emitting source. The flexible tube contains a plurality of spaced infrared emitting diodes uniformly arranged along its length and bent into a circle with ends meeting at a junction. The emitting source is controlled to emit radiation which is not visible to the human eye, but can be detected by a device capable of detecting emitted radiation.

Abstract: A structure for an infrared photoelectric device including a casing covered by a face panel, a circuit board with an infrared photoelectric element, a lens disposed above the circuit board, an adjusting frame assembly mounted inside the casing to hold the circuit board and the lens, and a switch mounted in a top recess on the casing and connected to an alarm system. The adjusting frame assembly is connected to the inside of the casing by a ball and socket joint. The adjusting frame assembly is then fixedly secured at the desired angle by a locating plate. The switch is switched on to turn on the alarm system when the power supply is cut off from the circuit board or the outer cover of the junction box in which the device is installed is opened by a burglar or intruder.

Abstract: A calibration apparatus is disclosed for measuring the properties of a laser beam. The apparatus includes a photoreactive element having a composition which reacts with laser radiation in a manner proportional to the intensity or intensity profile of the laser beam and an alignment means for disposing the photoreactive element in the path of a laser beam, such that the beam can be activate to impinge upon the photoreactive element and the properties of the beam are recorded by changes in the state of the calibration element. The calibration element may also be used to provide corrective feedback for modifying or controlling the properties of the laser beam.

Abstract: A high energy photon source. A pair of plasma pinch electrodes are located in a vacuum chamber. A working gas supply system supplies a working gas which includes a noble buffer gas and an active gas chosen to provide a desired spectral line. A pulse power source for provides electrical pulses at a frequency of at least 100 Hz and a voltages high enough to create electrical discharge between the electrodes to produce very high temperature, high density plasma pinches in the working gas providing radiation at the spectral line of the active gas. An external reflection radiation collector-director collects radiation produced in the plasma pinches and directs the radiation in a desired direction. In a preferred embodiment the active gas is lithium and the buffer gas is helium and the radiation-collector is coated with the material used for the electrodes. That material is tungsten.

Abstract: A method for approximating dynamic effects of atmospheric turbulence on infrared digital imagery utilizing the application of at least one spatially varying system to an object intensity distribution to obtain at least one image intensity distribution. The spatially varying system represents atmospheric turbulence which varies phase and/or amplitude as a function of a spatial index. The object intensity distribution and the image intensity distribution are related by an image warping transformation. Two configurations for experimental verification of the utility of a turbulence simulation technique are also disclosed.

Abstract: A blackbody simulating apparatus which has a blackbody simulator for emitting infrared energy in random directions. A collimator collects a portion of the infrared radiation emitted by the blackbody simulator and then redirects the infrared radiation as a collimated beam of infrared energy to a dielectric. The dielectric has a thin metallic coating affixed to its rear surface to form a mirror like surface at its rear surface. A primary reflection of the collimated beam of infrared energy occurs at the front surface of the dielectric resulting in a first blackbody image being directed to an infrared imager. A portion of the collimated beam passes through the dielectric to the metallic coating and is then reflected by the metallic coating to the front surface of the dielectric emerging from the dielectric as a second blackbody image which is also directed to the infrared imager.

Abstract: An electro-optical target and test apparatus having an improved resistive heating element. The resistive heating element comprises a resistive thin film coating layer, such as an indium tin oxide resistive coating layer, a resistive thin film semiconductor coating layer, or an electrically resistive polymer layer, that is disposed on a back side of a substrate. The substrate has a target pattern disposed on its front surface that to provide an emissivity target. The resistive coating layer provides a means for heating the substrate which produces a uniform source of thermal radiation because it has no holes therein. The resistive heating element is heated to radiate at a controlled target temperature set by a temperature controller coupled thereto. The materials comprising the coating layer and substrate may be transparent to visible and near infrared radiation.

Abstract: When producing an object by subsequent solidification of material layers 1 at places corresponding to the object there is a problem of limited production speed because the scanning speed or laser power of the light beam scanning the material layer 1 cannot be increased at will, if the light beam 4 used for solidification is focused as required for exact resolution. According to the invention this problem is solved by providing a variable focusing device 8 in the light beam 4, whereby the focus of the light beam 4 can be varied during the solidification of the layer 1. Thus, a different focus, laser power and scanning speed can be used in different regions of the layer 1.

Abstract: A UV emitter for drying surface-treated substrates has a housing with an opening aligned toward the substrate. A radiation source is arranged within the housing. At least one air outlet is provided at the opening for an air current sweeping over the opening.

Abstract: An apparatus for producing ultraviolet light at wavelengths capable of interacting with atmospheric oxygen to generate a predetermined amount of ozone including a lamp having a tube including a first section capable of emitting UVA light without emitting UVB light and a second section capable of emitting both UVA and UVB light, and a generally tubular sleeve capable of attenuating UVB light mounted to the tube for sliding movement along and covering a selected portion of the second section and attenuating a predetermined amount of UVB light emitted therefrom. An element for fixing the sleeve to the tube at a desired position are provided, and the sleeve may include a plurality of individually slidable sleeve segments.

Abstract: A array of water heated panel comprising a rectangular shaped support strure having a fluid inlet passageway positioned at the top portion of the structure and a fluid outlet passageway positioned at the bottom portion of the structure. The support structure also has a plurality of equally spaced substantially parallel fluid transport tubes which run the length of support structure. Each fluid transport tube within the support structure has one end connected to the inlet passageway and an opposite end connected to the outlet passageway. The support structure also has a flat outer radiating surface which is positioned adjacent to the fluid transport tube of the water heated panel. The fluid transport tubes of the water heated panel efficiently transfers heat from heated water flowing through the fluid transport tubes to the radiating surface of the water heated panel without substantial heat loss.

Abstract: The invention relates to an infrared radiation source for a gas analyzer and a method for generating infrared radiation. The infrared radiation source comprises a body (6), thermal insulation material (5) adapted inside the body (6), a radiant element (1) fitted inside the insulation material (5), elements (2, 3) for feeding electric energy to said radiant element (1), and a channel (7) formed in said body (6) and said thermal insulation material (5) in order to pass the radiation generated by said radiant element (1) to the gas under measurement. According to the invention, at least the thermal insulation material (5) adapted in close proximity to the radiant element (1) has a low thermal conductivity and the emissivity of the radiant surface (11) adapted in close proximity to the radiant element (1) is greater than 0.5 at the operating temperature of the source.

Abstract: A semiconductor laser produces infrared radiation suitable for jamming a heat seeking missile, wherein a wavelength of the radiation is in an infrared range of 2-5 microns, and the laser has a semiconductor laser medium. Cooling of the lasing medium is accomplished by use of a lithium heat sink thermally coupled to the lasing medium by a diamond thermal diffuser which conducts heat from the relatively small region of the laser to spread out the thermal energy along a relatively large surface of the heat sink. The semiconductor laser and the cooling equipment is mounted within a gimbal mounting which supports also an infrared receiving channel with associated optics for illumination and detection a missile. The common gimbal mounting is accomplished by use of a central rigid base plate which supports the transmitter and the receiver on opposite sides of the plate.

Abstract: A light source for use in examining leak detection sites in heating, ventilating, and air conditioning systems that utilize a fluorescence-producing dye in the refrigerant to determine the presence of leaks. The light source combines a dichroic reflector with a lamp and interference filter to provide a narrowed emission of wavelength of light emitted from the light source.

Abstract: Apparatus for fixing the position of an optical sensor within a range of motion in relation to an optical apparatus. The fixing apparatus provides permits a range of motion through five degrees of freedom (DOF) during the securing process. The apparatus includes a housing for the optical assembly, a middle bracket, with the middle bracket secured to the optical apparatus. The range of motion is provided by a gimbal design in the housing and middle bracket which creates the five DOF. There are no screws involved in the fixing process to impart torques or forces to the parts being aligned and secured in position. An ultraviolet (UV) activated adhesive is used to secure the sensor housing to the middle bracket and the middle bracket to the optical scanner housing. The middle bracket is formed of a material transparent to UV light, and a high percentage of the UV light can pass through it to cure the adhesive applied between the parts. A vertical hole runs through tabs of both the housing and the middle bracket.

Abstract: A wavelength shifting filter having two sheets of material adjacent and parallel with a spacer therebetween about the periphery of the sheets. The sheets are held in a frame. A phosphor coating is located on the inner side of one of the sheets. A transilluminator is associated with the filter and provides radiation in the UV wavelength. One sheet of the filter transmits the UV wavelength. The other sheet transmits at least a portion of the wavelength that the phosphor coating generates when subjected to the UV radiation of the transilluminator. The visual effect of white light is enhanced by the use of white glass.

Abstract: An infrared light source used in spectrometers including an infrared range, a Fourier Transform Infrared Spectroscope (FTIR), etc. The infrared light source is composed of a panel made of sintered silicon nitride plates, a heating element made of metal and embedded in the panel, and a pair of conducting lines for supplying electricity to the heating element. The infrared light is emitted homogeneously from the flat surface of the panel, as compared to a conventional infrared light source using a metal filament in which infrared light is emitted inhomogeneously. It is preferred to form a silicon oxide layer on a surface of the panel to prevent initial change in the infrared emitting characteristic.

Abstract: A method and apparatus are provided for emitting a laser like monochromatic narrow beam of light at a selected wavelength from a heated emitter member having a plurality of parallel layers while reducing emission at other wavelengths of light. The parallel layers are overlaid with each other. Each of the parallel layers extends transversely for a particular width. A heat source stimulates the emitter member to emit photons, which are determined by the composition of materials within the emitter member. The emitter member emits monochromatic light at a selected wavelength in response to the photon emissions. The selected wavelength of the monochromatic light is determined by the width of the layers of the emitter member. Light at other wavelengths does not transmit through and their emissivity also decreases.

Abstract: A module for use in a heating appliance has a frame with first, second, third, and fourth sides. A first heating lamp is mounted substantially along the first side of the frame, a second heating lamp is mounted substantially along the second side of the frame, a third heating lamp mounted substantially along the third side of the frame, and an fourth heating lamp is mounted substantially along the fourth side of the frame. Fifth, sixth, seventh, and eighth heating lamps are mounted substantially diagonally to the frame. A first reflector reflects radiant energy from the first heating lamp, a second reflector reflects radiant energy from the second heating lamp, a third reflector reflects radiant energy from the third heating lamp, and a fourth reflector reflects radiant energy from the fourth heating lamp. A fifth reflector reflects radiant energy from the fifth, sixth, seventh, and eighth heating lamps.

Abstract: An irradiator with a cooling nozzle which projects through an opening in a mirror and has an inlet opening for cooling air positioned at a set distance from the lamp, cooling air being drawn in by the inlet opening of the cooling nozzle for enabling light with a high light intensity to be emitted from the lamp by cooling it. In this way, a lamp with a small tube diameter can be efficiently cooled without reducing the light gathering power of the mirror, and the workpiece can be irradiated with light with a high peak intensity. Furthermore, a cooling nozzle of appropriate length and internal diameter can be chosen according to the external diameter of the lamp due to the focussing mirror and the cooling nozzle being formed as separate individual parts in one embodiment. In this way, the same minor can be used with lamps of different external diameters.

Abstract: An outdoor scene simulating apparatus for testing an infrared imaging dev comprising an infrared source, which emits infrared energy along a first optical path. Positioned downstream from the infrared source along the first optical path is a metallic substrate which has on its front surface a simulated outdoor scene. The simulated outdoor scene is formed by coating a portion of the metallic substrate with a black ink which absorbs infrared radiation. A thermal mass abuts the substrate to provide a cooling path between the thermal mass and the substrate. The thermal mass cools the metallic substrate and black ink of the simulated outdoor scene to temperatures below ambient temperature reducing infrared emissions from the metallic substrate and black ink of the simulated outdoor scene. Infrared energy reflected from the metallic substrate is directed along a second optical path to a collimator.

Abstract: A cooling system for use in a UV curing apparatus is disclosed. The cooling system includes a UV curing apparatus and a water supply element connected to the UV curing apparatus for cooling the curing apparatus via a first solenoid valve. A CPU is responsive to the UV curing apparatus for controlling the status of the first solenoid valve. An inverter is connected to the CPU and its output is coupled to a second solenoid valve. The second solenoid valve connects an air purging element to the curing apparatus. The air purging element provides clean dry air to force the water out of the curing apparatus.

Abstract: An infrared illumination system for a digital camera having a taking lens, includes: a plurality of infrared emitting diodes arranged around the taking lens, each diode being contained in a can having an infrared transparent window; a first diffuser located over the windows of the cans; and a second diffuser spaced apart from the first diffusers. The first diffuser is a new type of diffuser called a Fourier transform holographic diffuser.

Abstract: A machine for forming a protective film on optical disks transports disks through stages in which a protective film is applied to their surfaces. The protective film is then set while the disks are located upon disk trays specifically configured to promote setting of the portion of the protective film overlying the outer circumferential end faces of the disks. The disk tray is provided with reflective surfaces which reflect ultraviolet rays against the outer circumferential end faces of the disks.

Abstract: A Missile Launch and Flyout Simulator (MLFS) for simulating the UV and IR flight characteristics of an incoming missile throughout its launch, powered flight and post burnout phases, as would be viewed by a missile launch detection and tracking system. The simulator produces a UV output to simulate the launch of a missile, and an IR output to simulate the powered flight and post burnout phases of the missile's flight. In addition, the IR output ramps up in intensity during the simulated powered flight phase before dropping off to a simulated post burnout phase level, as would the IR signature of a real incoming missile. The simulator can also be programmable such that the duration of the emulated powered flight time, as well as the minimum and maximum IR intensity, can be varied to mimic the characteristics of the missile being simulated. In addition, the rate at which the IR intensity increases can be programmed so as to simulate different speeds of missile convergence to its target.

Abstract: An electro-optical target comprising an emissivity target and a controlled background source that has a temperature greater than, less than or equal to the temperature of the emissivity target. Appropriate adjustment of the temperatures of the emissivity target and heated controlled background source causes the "apparent" temperature of the emissivity target to be less than the specular ambient or background temperature, effectively emitting a negative temperature (delta T) relative to the background temperature produced by the controlled background source. It is useful to have an electro-optical target that emits a negative temperature (delta T) for minimum resolvable temperature testing of FLIR systems, for example, without cooling any of the components of the electro-optical target.

Abstract: A device comprising a light source, a sample holder and a temperature control chamber. The sample holder supports the vessels in a fixed relationship relative to the light source. The temperature control chamber surrounds the sample holder and vessels, so that a temperature control fluid may be passed around the sample vessels effectively maintaining the temperature of the sample vessels within a desired temperature range.

Abstract: An automated and preferably computer-controlled night vision device test arrangement for determination of spectral sensitivity in the infrared or other input spectrum regions. The test arrangement includes feedback control of night vision device input port signal levels, incremented selection of input signal wavelength, loop-residing spectrum increments and automated collection and presentation of test results.

Abstract: A transilluminator having two sets of tubes selectively providing light in the ultraviolet and visible ranges. The sets of tubes are arranged in two rows on opposite sides of a reflector in a housing having windows with lenses in opposite sides. The two sets of tubes have separate circuits sharing a common ON/OFF switch and a mercury switch mounted to the housing. With the device on, the orientation of the housing determines which of the two sets of tubes is on and which is off. Two sets of mounts to stably retain the housing on a planar surface are arranged on the opposite sides so that the housing may be positioned and used in two orientations. In either orientation, the upwardly facing lamps are energized while the downwardly facing lamps are turned off.

Abstract: A counterfeit detection apparatus for analyzing paper to detect counterfeits thereof is disclosed. The apparatus comprises a structure and a foot mounted below the structure. A first lens is mounted atop the structure while the paper is mounted in the bottom of the structure above the foot. A ultraviolet light and at least one top light are mounted on the structure between the first lens and the paper while a back light is mounted in the foot below the paper. The apparatus includes a control circuit in electrical communication with the ultraviolet light, the at least one top light and the back light which sequentially activates the ultraviolet light, the at least one top light and the back light.