LUMINOPHOR IRRADIATION

An information display method comprising forming an image of a chemiluminescent component on a support according to information to be recorded and placing the support bearing the image of the material in an atmosphere capable of effecting the chemiluminescence of the material to thereby display the image...     

A light distributing assembly such as a direction lamp utilizing a fluorescent plastic member which is capable of emitting light from its ends or edges when a light source is impinged on its surface combined with a cylindrical dowel, rod, spherical ball, reflector or the like which will pick up a substantial...     

In a method of analytical spectrometry, material to be analysed is introduced in solution between a pair of charged electrodes so as to produce a light-absorbing atomic or molecular species by electrolysis at an electrode surface. A beam of light of an appropriate wavelength is directed through the solution...     

Vertical reflection type fluorescence microphotometer in which a specimen under examination is irradiated with an ultraviolet ray directed onto the upper surface of the specimen and light reflected back from the specimen is measured by means of a photoelectric tube. The fluorescence microphotometer comprises...     

A radiation detecting system for direct viewing and imaging comprises a quantum mechanical substance that is arranged both to receive target radiation and to fluoresce for a predetermined lifetime. A source of pulsed pump radiation is coupled to the quantum mechanical substance, and the pump radiation...     

A method and system for recording information on a document surface to accommodate the automatic processing of documents is provided, which requires neither ink jet nor impact printing. A photosensitive material, such as a dye, is applied as a continuous coat over a field of the document surface. Selected...     

A system for identifying and locating objects of known chemical composition and discriminating against a background having a different chemical composition comprises a source of radiation for illuminating the object and the background and a receiver responsive solely to the fluorescent radiation from...     

A fluoroescence spectrometer or fluorometer for simultaneously presenting the excitation and emission spectra of a multicomponent sample in the form of an intensity matrix is disclosed which comprises an elongated cuvette for holding the fluoroescent sample, along whose length a spatially distributed...     

A fluid stream with entrained phosphorescent particles is used to transfer solar radiant energy to a light-release zone where the passage of the stream and particles through suitable light emitting containment means will permit both radiant heat and light emission into such zone. Typically, the heated...     

An optical identification and communication system wherein an interrogator sends out a broad illuminator beam outside the visible range. Some of this radiation is collected by the transponder optic and focused on a converting phosphor. The response light is recollimated by the transponder optic and transmitted...     

Three-dimensional images are produced within a transparent cathode-ray tube by directing a plurality of electron beams into a cloud of phosphorescent particles and causing the beams to intersect at a point within the cloud. Each individual beam's current is maintained at less than the threshold of luminescence...     

A fluorescence spectrophotometer in which a monochromatic beam of radiation is directed from an excitation monochromator through a first optical system to a sample being evaluated. Fluorescence from the sample is collected by a second optical system and is directed to an emission monochromator. These...     

Apparatus for concentrating radiant energy such as solar radiation, collected over a large area, to a smaller area for more efficient conversion of the radiant energy to a more useful form of energy. Fluorescent material in a thin film form is optically bonded by an adhesive or viscous, transparent medium...     

An improved intraoral fluoroscope adapted for use with an electronic video display system is provided by the present invention. The preferred fluoroscope system comprises (a) a light transparent, phosphor-coated screen, (b) a visible light image conversion system for converting a visible light image...     

An inexpensive, lightweight fiber optic micro-sensor that is suitable for applications which may require remote temperature sensing. The disclosed temperature sensor includes a phosphor material that, after receiving incident light stimulation, is adapted to emit phosphorescent radiation output signals,...     

A photoconductive laminate and its use are disclosed, the laminate comprising two layers of compounds, each layer being a single phase and at least one of the compounds having a generally planar polycyclic nucleus.

A system is provided for the collection of electromagnetic radiation and the transmission of that radiation to a point of utilization in the form of light. Basically, the system employs a first solar concentrator for the collection and concentration of solar radiation. Optically coupled to the first...     

An arrangement for detecting low concentrations of atoms. A gaseous sample containing the atoms to be detected is provided and the atoms have a plurality of energy levels with photon inducible transitions between a first energy level and a second level and collision inducible transitions between the...     

The photometer is adapted for sensing radiation emitted by a chemical sample held in a cuvette received in a first compartment and includes a highly sensitive photomultiplier in a second compartment adjacent the first compartment for detecting fluorescent radiation emitted by the chemical sample and...     

An ultraviolet light beam is split into two beams which are directed toward a reference cell and a sample cell, respectively. A mechanical rotating light chopper permits the reference and sample cells to be alternately illuminated. Radiation from the reference and sample cells is directed toward and...     

A fluorescence spectrophotometer comprising a light source, an excitation side monochromator which makes light from the light source be subjected to spectroscopic analysis for illuminating as actinic light a sample, a fluoroscence side monochromator which makes fluorescence light from the sample be subjected...     

A signal element without a lamp for use with signal buttons, toggle switches, control knobs, slide switches and the like which has a moveable member received in the housing member for movement between at least two positions to cause actuation of the part of the element characterized by a fluorescent...     

A photovoltaic device composed of a luminescent member having a plurality of large area sides connected by an edge face, and at least one photovoltaic means carried by at least one of said sides.

A photoluminescent indicator apparatus having automatic feedback means to maintain the sensitivity of the indicator apparatus with respect to variations in environmental conditions. The apparatus includes a sample of photoluminescent material having a photoluminescent decay rate which varies as a function...     

A passive display device particularly useful for signs and reflectors and not requiring any light source characterized by a device for entrapping light and then emitting entrapped light at given positions at an increased intensity. The device for entrapping light includes at least one transparent fluorescent...     

A detector 10 used to sense the presence of control markings 20 on a moving web 12. The detector responds to abrupt changes in intensity of electromagnetic radiation rather than merely to absolute intensity values. Gradual changes in or a constant level of detected radiation or detector temperature do...     

An apparatus for the detection of fluorescence. An airborne optical system carried in an aircraft or spaceship scans a sunlit swath of terrain over a field of view defined by a selected one of the fringe rings of a Fabry-Perot etalon designed to pass a selected Fraunhofer line. A first series of detectors...     

Fluoroimmunoassay of fluorescently tagged species using a fiber optical light guiding system, and single or paired fluorescent detectors, and polarizing the activating radiation and both fluorescent radiation outputs and apparatus for carrying out such assay is disclosed.

Security papers with luminescing authenticity characteristics built in or printed thereon which absorb in the visible region of the optical spectrum but in the infrared have a transparent region in which the luminophore also emits. By the absorption in the visible undesired parasitic emissions are suppressed...     

The invention relates to a spectral fluorometer arrangement including a laser light source, particularly for use in measuring the luminescence in the course of a qualitative and quantitative determination of a sample material, comprising a beam splitter inserted between said laser light source and a...     

The present invention relates to an apparatus for laser isotope detection and concentration measurement (LIDAM). A test sample containing first and second isotopes of a specific material or compounds formed with the first and second isotopes of the specific material is placed in an optical bridge with...     

A fiber optic probe to be implanted in human body tissue for physiologic studies involving measurement and monitoring of the partial pressure of gaseous oxygen in the blood stream, which is coursing through a particular blood vessel in the body. The use of the probe is based on the principle of dye fluorescence...     

The invention relates to a spectral fluorometer arrangement including at least one laser light source, particularly for use in measuring the luminescence in the course of a qualitative and quantitative determination of a sample material, the region of which to be excited is arranged in the object point...     

A sensitive frontal approach fluorometer which is suitable for measuring the fluorescence of samples in open top microtest wells and which has an optical system for (a) directing an exciting light downwardly into the well's open top to fluorescently excite the sample and (b) detecting the sample's emitted...     

A fluorimeter comprises an excitation optical system projecting the excitation light having a selected wavelength for a sample to said sample, a sample cell for accommodating the sample; fluorescent light sensors for sensing the fluorescent light emitted from the sample; a transmission light sensor for...     

In a photometer for measuring atomic fluorescence, a partial light beam is branched off the exciting light beam by means of a mirror having a hole. The partial light beam falls on a scattering disc, from which a reference light beam impinges upon the detector through opposite windows of the measuring...     

A light-reflective, flowable and curable composition is described which comprises a resin containing light-reflective solid particles in an amount and of average particle size sufficient to provide the desired light reflectance/transmittance characteristics to the cured composition. Preferably, the composition...     

A gas chromatographic detector for detection of compounds which fluoresce as a photo-response to light. The detector utilizes a remotely located light source for fluorescent excitation of a compound in a gas phase, and includes apparatus for the measurement of emitted fluorescence of a gas and for the...     

Process and monitor for detecting the presence of particles in an effluent fluid, which particles emit fluorescent light upon irradiation. As used to monitor ion exchange resin fines in effluent liquid in a steam power plant, there are probe means to inject fluorescence-stimulating light into a volume...     

A system for generating a substantially-continuous stream of binary signals representative of the presence of copper on the surface of a fluorescent substrate of a board. A beam is swept by mirror facets of a rotating mirror drum along a path on the board. When the beam strikes copper it is merely relected....     

A plasma monitor which measures the distribution of particular chemical species (atom, molecule, ion) in plasma generated inside an instrument making use of the plasma. Laser light having a particular wavelength is radiated to the particular chemical species so as to let it generate fluorescence. The...     

The ion-beam monitor determines the distribution of the ion beam intensity by scanning a flat pellet of Al.sub.2 O.sub.3 with the ion beam and detecting the ultra violet radiation emitted from the Al.sub.2 O.sub.3 pellet and recording the same at each step of the scanning operation.

An apparatus for the alignment of electronic components to be mounted on a printed board. The alignment is accomplished by illuminating the surface of the printed board to cause emission of a fluorescent light from the substrate of the printed board, detecting the fluorescent light by optical means to...     

In an optical sensor used mainly for determining the partial pressure of O.sub.2 or CO.sub.2 in respiratory gas includes a sample measuring chamber through which sample medium to be analyzed flows or into which it is fed, a reference measuring chamber containing a reference gas or a reference liquid...     

A spectrophosphorimeter with a single spectrometer so as to obviate the need of a couple of spectrometers of conventional spectrophosphorimeters, wherein one spectrometer is operated as an excitation-side spectrometer only when the light is allowed to pass a light interceptor, and the other spectrometer...     

Luminescent security features in or on documents are detected using a detector comprising a fibre optic light guide arranged to transmit an interrogation beam originating from a source onto a document to be tested; and a housing in which a photo-diode array is mounted to receive luminescence emitted...     

An optical temperature measurement technique that utilizes the decaying luminescent intensity characteristic of a sensor composed of a luminescent material that is excited to luminescence by a light pulse or other periodic or other intermittent source of radiation. The luminescent emissions of a preferred...     

Fluorometer in whose reference channel (5) there is optical fiber made of a fluorescent material. The optical fiber acts as an internal standard.

Two sets of TACs are simultaneously operated by a start pulse, one set of TACs using a photoelectron pulse due to an excited light from a sample as a stop pulse, and the other set of TACs using a photoelectron pulse due to a fluorescence from the sample as a stop pulse. Each TAC outputs a voltage proportional...     

An alignment device having a light source for emitting a light beam in a ultraviolet range or in a short wavelength range to irradiate alignment marks formed on two members to be aligned with each other, and an observation system for observing an image related to the alignment marks of the two members...     

A method for the alignment of electronic components to be mounted on a printed board. The alignment is accomplished by illuminating the surface of the printed board to cause emission of fluorescent light from the substrate of the printed board, detecting the fluorescent light by optical means to detect...     

A fluorescent spectral analysis apparatus comprises a source of a laser beam, and first and second optical fibers to be inserted in an endoscope with forward ends extended from a distal end of the endoscope. The first optical fiber guides the laser beam emitted from the source to a subject portion to...     

In order to improve the sensitivity and the spectral resolution in measuring the luminescence of diverse sample materials, adapted optical imaging relationships at variable excitation output are provided for the different optical paths of the luminescence light emitted by the sample material. An excitation...     

This invention relates to a device for measuring fluorescence polarization, which permits to measure the degree of fluorescence polarization in a short time and also its variations in time. In order to achieve this object, a device for measuring fluorescence polarization according to this invention is...     

Apparatus is provided to sense and measure solarinduced luminescence, as well as reflectance, within the field of view of a target window for receiving a composite ray of light from the target. A first filter within the path of the composite ray of light transmits a first narrowband component thereof,...     

A fluorescent material arranged under an environment of temperature objective for measurement is excited by irradiating red color light or infrared rays, then fluorescent light generated from the fluorescent material is received by an optical sensor thus the temperature of the fluorescent material is...     

A laser communication system in which a filter-detector is provided which has a high acceptance angle and a narrow bandwidth. The filter-detector contains vaporized selected atomic species or a molecular composition dissociable to the selected atomic species. The selected atomic species electronic ground...     

A printer of the type used with typewriters and computerized equipment is provided with a system for monitoring the supply of printable media, such as paper. A first thickness measuring caliber is used to measure the thickness of the paper to be printed, and a second such caliber measures the thickness...     

There is disclosed herein a reference system for a fluorometer designed to detect very low levels of materials tagged with fluorophores. There is also disclosed an optical system for use in such a system which improves the signal to noise ratio. The reference system utilizes pulsed arc light excitation...     

An improved electro-optical detection system is disclosed capable of use in a fluorescent polarization instrument. In a single or dual channel system, an integrated photodetector/amplifier is combined with a linear charge-balancing voltage-to-frequency converter to produce a digital frequency indicative...     

A fluorescence imaging system. A light source irradiates an object to be viewed. The irradiated object is imaged through a beam-splitting system to form individual displaced images of the object. The displaced images are further filtered in a filter having a frequency passband different from the other...     

An optical temperature measurement technique that utilizes the decaying luminescent intensity characteristic of a sensor composed of a luminescent material that is excited to luminescence by a light pulse or other periodic or other intermittent source of radiation. The luminescent emissions of a preferred...     

A multi-chronal fluorescence imaging technique for spatial differentiation and correlation of a plurality of separate sample components tagged with site specific dyes is described. The dyes have decay times that are widely separated and vary by approximately a factor of ten from one dye to the next....     

A detection system is provided for identifying individual particles or molecules having characteristic emission in a flow train of the particles in a flow cell. A position sensitive sensor is located adjacent the flow cell in a position effective to detect the emissions from the particles within the...     

This invention is for obtaining ratios of Raman spectrum by using a referential sample representing at least two of Raman spectral lines, and for correcting fluorescence intensities of the sample to measured on the basis of the obtained ratios of Raman spectrum.

A luminometer apparatus has a light-tight box (12) into which a cuvette (2) containing a sample and a reagent are located for producing a phosphorescent reaction. The phosphorescent reaction is detected by a photodetector (PD) and a shutter (3) is interposed between the cuvette and the shutter. Output...     

A system for detecting the radiant energy emitted from different closely spaced species includes two detectors each having a large entrance angle for receiving the radiant energy, and wavelength selective filters between the detector and species, the transmission vs. wavelength characteristics being...     

A high sensitivity fluorescence and absorption detector comprising an elongated substantially cylindrical flow cell connected to and receiving the outflow of a fluid chromatography column; a mechanism for projecting a fluorescence generating beam of electromagnetic energy along on an axis substantially...     

A system for aligning an optical fiber termination to a light path is disclosed. Light coming through the fiber at its termination as well as light introduced into the light path from a laser are directed along the light path to a viewer. The placement of the fiber termination is adjustable, as is the...     

A microscope is modified to allow for precise imaging of samples using different filters at different focal planes under computer control. A filter accessory includes a filter disc having bandpass filters. The filter disc may be rotated to move a selected filter into the optical path between a light...     

The present invention provides an apparatus and method for fluorescence detection. An ellipsoidal cylinder having a first focal line, a second focal line and an internal reflective surface is provided. An excitation source is disposed on the first focal line and a sample container is disposed on the...     

A detector for bremsstrahlung-isochromatic-spectroscopy (BIS) utilizing a gas-filled metal cylinder forming an outer electrode and a wire extending axially in the cylinder has an inner electrode. The window for the UV photons is constituted of MgF.sub.2 while the counting gas is a mixture of dimethylether...     

A fluorometer for measuring a particular fluorescence emanating from a specimen and operating in accordance with the following method. Producing a burst of concentrated light energy and directing the concentrated light energy toward the specimen to produce a fluorescence from the specimen including the...     

A leak detector for monitoring, in an area being investigated, the presence of a liquid having a characteristic fluorescence spectrum. The leak detector includes a radiation source, with the radiation provided to the area being investigated. The detector also includes a collector for collecting radiation,...     

A system for detecting a splice in a single facial tissue in a stack of facial tissues wherein a detector agent is applied at the location of the splice, the facial tissue is folded so that the detector agent is located at least one side edge thereof, and detecting the existence of the detector agent...     

A radiation meter for measuring the intensity of incident ultraviolet radiation in a predetermined wavelength band against a background of broadband radiation, such as sunlight, includes a sheet of a material incorporating a fluorescent dye. The dye is selected to absorb radiation in the predetermined...     

A frequency domain spectrofluorometer employing extrinsically modulated DC light sources or intrinsically modulated laser pulse trains, containing multiple, harmonically related, phase-locked frequencies for exciting a fluorescent sample. High frequency light emissions of the excited sample are simultaneously...     

An apparatus for measuring the presence of microorganisms using fluorescent substances. A number of samples are measured continuously by enclosing the entire reacting and measurement sections within a thermostatically controlled enclosure. A number of samples are placed in containers with reactive liquids...     

A method for measuring volume of surface depressions wherein the depression to be measured is or filled with a material which emits wavelength-shifted scatter light under irradiation. The material is illuminated with a light source whose wavelength lies in the absorption region of the material and the...     

It is proposed to increase the utility of intracellular fluorescence and absorbance measurements for control of fermentation and cell culture by correcting on-line for background fluorescence of the media, also to be able to measure the fluorescence or absorbance of the fluid media in the presence of...     

The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer...     

A fluorescent penetrant inspection sensor using a laser light source for locating and mapping minute surface flaws. The sensor focuses laser radiation to a point on a surface to be inspected and systematically scans the surface for reflections within a predetermined frequency range. A plurality of lenses...     

A scanning spectrometer scans the spread spectrum of sunlight and low level luminescence or fluorescence past a slit to provide the spectrum scanned in the time domain. An image intensifier responsive to the light energy passing through the slit is gated on when Fraunhofer lines are coincident with the...     

There is disclosed a self-luminous source of light preferably as applied to illuminated signs and safety markers which emits a high level of uniform light. The invention utilizes a beta emitter, preferably tritium gas, which is contained within a sealed glass enclosure having an interior coating of a...     

Disclosed are methods and apparatus for remotely measuring radiation levels. Such are particularly useful for measuring relatively high levels or dosages of radiation being administered in radiation therapy. They are also useful for more general radiation level measurements where remote sensing from...     

A noninvasive pulsed fluorescence gas velocimeter that determines dynamic parameters of a gas flow from detection of fluorescent re-radiation of excited molecules of the gas. The present invention has higher altitude capability than devices that utilize particulate scattering. The velocimeter requires...     

An apparatus for determining the position of an object comprises a light source positioned in relation to the object so that at least one collimated beam is issued from a particular positon on the object and bearing a fixed and definite geometric relationship to the sought position; a fluorescent foil...     

A time-resolved infrared spectrophotometer capable of investigating samples exhibiting short periods of response to stimuli. The spectrophotometer comprises a rapid scan interferometer, a stimulus generator periodically producing a stimulus not in synchronism with the reference signal produced by the...     

A luminescence measuring system is provided for detecting luminescence at extremely low concentrations of luminescing moieties. The method employs alternating radiation at a plurality of loci of an inhomogenous solution, where the radiant power is maintained constant, and the irradiated volumes of pairs...     

An optical gas sensor comprises a light emitting element; a photo detecting element; a gas sensing element including a thin film containing an organic pigment, the gas sensing element responding to light emitted from the light emitting element to emit fluorescence or phosphorescence; and a filter for...     

Quenching luminescence of the tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) perchorate, immobilized in a silicone rubber by oxygen is shown to be an accurate and precise method for measuring oxygen concentration in solutions and in the gas phase. Quenching can be quantitated by either lifetime...     

In an immunoassay apparatus, a washing liquid containing a substrate is applied to a labeled antigen or a labeled antibody. The fluorescent substance formed from the substrate is exposed to stimulating rays, which cause it to produce the fluorescene, and the amount of the fluorescence is measured, whereby...     

A laser scanning microscope produces molecular excitation in a target material by simultaneous absorption of two photons to thereby provide intrinsic three-dimensional resolution. Fluorophores having single photon absorption in the short (ultraviolet or visible) wavelength range are excited by a stream...     

A laser imaging system is disclosed which provides the versatility of wide field digital imaging with enhanced spatial resolution and light gathering efficiency. The system will scan targets of any size, dependent only upon the data retrieval and storage limitation of the computer support system, for...     

This invention is a method and apparatus for detecting the presence of gaseous oxygen and measuring the amount present. In the practice of the invention, luminescence from a luminophor compound is quenched by oxygen. The luminiphor is a conjugated aromatic carbonyl. The intensity of the emitted light...     

A photon-counting type streak camera device measures by an integration operation the probability distribution of production timing of phenomenon light such as fluorescence light which a specimen produces upon reception of repeatedly generated pulse exciting light. A phenomenon streak camera system time-measures...     

Magnesium oxide sensing material is pretreated and charged by UV radiation o identify impingement thereon of radiation from a near infrared laser source by detection of blue emissions which persist for an unusually long period of time, avoiding frequent respotting and recharging. When heated to thermoluminescence...     

Marking tape adapted for use in autography, comprising: a substrate having an upper surface, a phosphorescent coating applied to the upper surface, the coating including phosphor powder grains, the grains phosphorescing with light at a wavelength between 400 and 600 nm upon exposure to UV or visible...     

This invention relates to an optical detection of ballistics device using satellites emitting beams of neutral molecules in a specified direction. Intense optical radiation will be reflected off insulated surfaces of nose cones and detected by narrow band optical filters on the satellite.

A spectrofluorometry apparatus utilizes dual wavelengths. The dual wavelengths are produced using different wavelength filters and a rotating reflective disk that direct the light to each of the respective filters. The reflective disk contains a notch that allows light to pass through it and two reflective...