FREE patent keyword monitoring and additional FREE benefits. http://images1.freshpatents.com/images/triangleright (1K) REGISTER now for FREE triangleleft (1K)
FreshPatents.com Logo    FreshPatents.com icons
Monitor Keywords Patent Organizer File a Provisional Patent Browse Inventors Browse Industry Browse Agents

With Light Beam Indicator

With Light Beam Indicator patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

Related Categories:

Measuring And Testing


Vibration > Sensing Apparatus > With Light Beam Indicator



Vibration detection system based on biconical tapered fiber and the method thereof
12/04/14 - 20140352442 - A vibration detection system comprises a light source, a biconical tapered fiber comprising a biconical fiber taper and a detector is disclosed. The emission light emitted by the light source is directed to the biconical tapered fiber in one side. A detector is coupled to the other end of the...

Pipe wall thickness measurement
12/04/14 - 20140352443 - A method of measuring a wall thickness of a pipe can include optically detecting vibration of the pipe, and computing the wall thickness of the pipe, the computing being based at least partially on the optically detected vibration. Another method of measuring a wall thickness of a pipe can include...

Detecting broadside acoustic signals with a fiber optical distrubuted acoustic sensing (das) assembly
11/27/14 - 20140345388 - A distributed fiber optic acoustic sensing system comprises an elongate body having an outer surface, an optical fiber disposed on the outer surface at a first predetermined wrap angle, and light transmitting and receiving means optically connected to the fiber for. The elongate body may include at least one substantially...

Fiber optic directional acoustic sensor
10/02/14 - 20140290372 - A fiber optic acoustic sensor and a method of using same. The sensor includes a light emitting diode and a fiber optic probe having a transmitting multimode optical fiber and at least one receiving multimode optical fiber. The transmitting multimode optical fiber and the receiving multimode optical fiber are substantially...

Interleaved acousto-optical device scanning for suppression of optical crosstalk
09/18/14 - 20140260640 - A method of scanning a sample includes simultaneously forming a plurality of co-linear scans. Each scan is formed by a sweep of a spot by an acousto-optical device (AOD). The co-linear scans are separated by a predetermined spacing. A first plurality of swaths are formed by repeating the simultaneous forming...

Process and apparatus for cleaning a surface
08/21/14 - 20140230558 - A method of cleaning a surface includes the steps of directing a laser beam to the surface at a predetermined location and capturing for the predetermined location a) data relating to an acoustic response induced by interaction of the laser with the surface, b) data relating to the optical reflectivity...

Distributed acoustic sensing with multimode fiber
07/31/14 - 20140208855 - A method and system for distributed acoustic sensing using multimode optical fibers....

Object information acquiring apparatus
07/17/14 - 20140196544 - An object information acquiring apparatus disclosed by this specification includes a detector configured to detect a photoacoustic wave generated from an object on which light is irradiated from a light source, a generator configured to generate, using the photoacoustic wave, an image indicating characteristic information in a photographing region in...

Object information obtaining device, display method, and non-transitory computer-readable storage medium
07/03/14 - 20140182383 - An object information obtaining device includes a light source which emits light, an acoustic wave detecting unit which detects a photoacoustic wave generated by irradiation of an object with the light, and outputs an electric signal in response to detection of the photoacoustic wave, and a processing unit configured to...

Object information acquisition apparatus, display method, and non-transitory computer-readable storage medium
07/03/14 - 20140182384 - An object information acquisition apparatus disclosed in the present specification includes a light source, an acoustic wave detection unit, and a processing unit. The light source is configured to emit light. The acoustic wave detection unit is configured to detect a photoacoustic wave generated by irradiation of an object with...

Photoacoustic probe and photoacoustic device having the same
07/03/14 - 20140182385 - A photoacoustic probe and photoacoustic device implementing the photoacoustic probe may reduce an artifact caused by an ultrasonic wave generated in the photoacoustic probe without mounting a separate device. The photoacoustic probe and photoacoustic device implementing the photoacoustic probe may reduce an artifact by changing a configuration or a structure...

Rf-photonic system for acoustic and/or vibrational sensing using optical fiber and method thereof
05/15/14 - 20140130601 - a signal processor for processing the sideband signals to detect acoustical and/or vibrational signals from the target area. The method comprises sensing vibrational and/or acoustical signals for detection of acoustical and/or vibrational signals in the target area....

Laser apparatus and photoacoustic apparatus using laser apparatus
05/08/14 - 20140123762 - A laser apparatus comprises a cavity having an output unit, and a branch unit arranged between the output unit and first and second reflection unit, an optical path in the cavity including a common part and separate parts, respectively; a laser medium and a wavelength filter disposed in the common...

Laser apparatus and control method thereof
04/24/14 - 20140109678 - Provided is a laser apparatus including a cavity having an output mirror and a reflective mirror, a laser medium and an excitation lamp disposed inside the cavity, a wavelength selector allowing selection of a wavelength for laser light pulses to be emitted from among a plurality of wavelengths, and a...

Probe, object information acquisition apparatus, and method of manufacturing the probe
04/17/14 - 20140102204 - A probe configured to receive an acoustic wave from an object including an element having a cell structure, in which a vibration membrane having one of a pair of electrodes formed with a gap arranged therebetween is supported so that the vibration membrane can be vibrated by the acoustic wave;...

Long distance optical fiber sensing system and method
04/03/14 - 20140090474 - A long-distance fiber optic monitoring system having a sensing unit and an analyzer that is remotely located from the sensing unit is provided. The sensing unit comprises a source of optical energy for injecting optical energy into the fiber optical cable and an optical detector configured to detect an optical...

Acoustic wave receiving apparatus
03/20/14 - 20140076055 - Use of an acoustic wave receiving apparatus which includes: a resonator including a first mirror on which measurement light is incident, a second mirror which is arranged to face the first mirror and on which acoustic waves from an object are incident, an acoustic wave reception layer interposed between the...

Device for measuring the relative alignment of two articles, method for determining a quality characteristic and vibration measurement device and method
03/13/14 - 20140069196 - An alignment device with one or two optoelectronic transmitting and/or receiving units and an evaluation unit. At least one optoelectronic transmitting and/or receiving unit contains an inclinometer. Furthermore, the transmitting and/or receiving unit is connected to a vibration sensor which can be the inclinometer. Both the result of the alignment...

Method and device for the optical non-contact oscillation measurement of an oscillating object
02/13/14 - 20140041456 - A device for the optical non-contact vibration measurement of an vibrating object, including a laser Doppler vibrometer that has a laser (1) as the light source for a laser beam, a first beam splitter assembly (S1) for splitting the laser beam into a measuring beam (2) and a reference beam...

Method of measuring acoustic distribution and distributed acoustic sensor
12/19/13 - 20130333476 - Optical pulses are output from a light source to an optical fiber at one selected emission wavelength, a reflection light reflected at a fiber Bragg grating at the optical fiber is received at an optical receiver and is converted to a reflection signal by an optical to electrical conversion, a...

Measuring system
12/19/13 - 20130333477 - A measuring system for measuring a physical quantity related to one of an electromagnetic wave and a magnetic field includes a vibration-type actuator, a waveform generating unit configured to generate a driving waveform signal of the vibration-type actuator, an optical transmitter unit configured to receive the driving waveform signal and...

Laser-based edge detection
12/05/13 - 20130319122 - A system to detect an edge of an object includes an optical instrument configured to direct a laser beam toward the object, configured to receive a reflection of the laser beam based on whether the laser beam impacts the object, and configured to generate an intensity output indicative of an...

Photoacoustic probe
12/05/13 - 20130319123 - A photoacoustic transducer, such as a photoacoustic probe includes an optical fiber, diaphragm, at the optical fiber, whereby the optical fiber and diaphragm define a cavity, and an energy absorption film at the optical fiber, whereby an activating laser directed through the optical fiber can excite the energy absorption film...

Fibre optic distributed sensing
11/07/13 - 20130291642 - This application describes methods and apparatus for fibre optic distributed acoustic sensing (DAS) where microstructured fibre (202), such as holey fibre or photonic crystal fibre is used as the sensing fibre (104). The microstructured fibre is configured so to provide at least one of enhanced sensitivity to a given incident...

Detecting the direction of acoustic signals with a fiber optical distributed acoustic sensing (das) assembly
11/07/13 - 20130291643 - A directionally sensitive Distributed Acoustic Sensing (DAS) fiber optical assembly comprises adjacent lengths of optical fiber (A,B) with different directional acoustic sensitivities, which are used to detect the direction (a) of acoustic signals relative to the lengths of optical fiber (A, B)....

Light output calibration in an optoacoustic system
10/24/13 - 20130276542 - An optoacoustic system includes first and second light sources capable of generating pulse of light at first and second wavelengths, first and second electrically controlled optical attenuators, first and second light sync detectors, and a combiner. A power meter that is calibrated to determine power at the first and second...

Probe and manufacturing method thereof, and object information acquisition apparatus using the same
10/10/13 - 20130263669 - A probe is provided where a problem of reduction in a reflective performance of an optical reflection layer due to the surface roughness of a support layer of an optical reflection member provided on an element for reflecting irradiation light onto an object or scattered light thereof is solved. The...

Probe and object information acquisition apparatus using the same
10/03/13 - 20130255388 - A probe is provided that can suppress the warp of an optical reflection member on a receiving surface and stably receive photoacoustic waves. The probe includes: an element having at least one cell in which a vibration film containing one electrode out of two electrodes that are provided so as...

Probe and object information acquisition apparatus using the same
10/03/13 - 20130255389 - A probe is provided in which penetration of an acoustic medium into a support layer of an optical reflection member through a pinhole or a scratch on an optical reflection layer is suppressed, occurrence of a solvent crack is suppressed, and noise due to photoacoustic waves that occurs on a...

Method and apparatus of detecting an object
09/12/13 - 20130233084 - A portable non-contact sensor system including a laser generator subsystem, a laser detector subsystem, an an analysis subsystem. The laser generator subsystem is configured to project a plurality of laser pulses at a surface of an object that is to be characterized. The laser detector subsystem is configured to receive...

Quantification of optical absorption coefficients using acoustic spectra in photoacoustic tomography
08/08/13 - 20130199299 - Accurately quantifying optical absorption coefficient using acoustic spectra of photoacoustic signals. Optical absorption is closely associated with many physiological parameters, such as the concentration and oxygen saturation of hemoglobin, and it can be used to quantify the concentrations of non-fluorescent molecules. A sample is illuminated by, for example, a pulsed...

Apparatus and method for obtaining object information and non-transitory computer-readable storage medium
08/08/13 - 20130199300 - An object information obtaining apparatus includes a signal processing unit configured to obtain weighted optical characteristic information about an object on the basis of feature information about the object obtained by elastography measurement or B-mode image measurement using an elastic wave signal acquired by transmission and reception of elastic waves...

Object information acquiring apparatus
07/04/13 - 20130167648 - An object information acquiring apparatus has: a holding unit which holds an object; a probe which receives an acoustic wave generated in the object via the holding unit and converts the acoustic wave to an electrical signal; a force measuring unit which measures a force applied to the object when...

Acoustic wave acquiring apparatus
06/27/13 - 20130160557 - Provided is a technique capable of changing resolution or an imaging area during imaging, in an acoustic wave acquiring apparatus using a Fabry-Perot probe. An acoustic wave acquiring apparatus includes a measurement light source emitting measurement light, a probe having a Fabry-Perot interferometer including a first mirror, upon the side...

Photoacoustic imaging apparatus and control method thereof
06/27/13 - 20130160558 - A photoacoustic imaging apparatus is used that comprises a light source capable of irradiating light onto an object from a plurality of directions, a detector that detects acoustic waves generated by the object irradiated with light, a calculator that calculates object information from detected acoustic waves, and a generator that...

Photoacoustic wave measuring apparatus
06/27/13 - 20130160559 - A photoacoustic wave measuring apparatus, having: a probe including a plurality of devices which detect an acoustic wave generated by irradiating light onto an object; and a signal processor which acquires information about the object on the basis of an acoustic wave received by the devices, wherein the light is...

Measuring apparatus and measuring method for metallic microstructures or material properties
06/20/13 - 20130152692 - A pulse laser oscillator (11) outputs a first laser beam, a beam splitter splitting the first laser beam into split beams, optical paths (12, 13, 14, 15, 16) propagating light of split beams split, respectively, taking different times for light propagation thereof, a condenser superimposing light of split beams propagated...

Gunfire detection
06/06/13 - 20130139600 - An apparatus and method for detecting gunfire is provided which uses distributed acoustic sensing to provide the gunfire detection. The method comprises interrogating an optical fibre with electromagnetic radiation to provide a distributed acoustic sensor comprising a plurality of sensing portions of the optical fibre, and analysing a measurement signal...

Constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method
05/16/13 - 20130118262 - An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying...

Acoustic wave detector and acoustic wave measurement apparatus
05/09/13 - 20130112001 - An acoustic wave detector includes: a transducer; and a light reflecting member which is positioned between the transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface. The light reflecting member includes a first reflecting surface and a second reflecting...

Long distance optical fiber sensing system and method
04/04/13 - 20130081472 - A long-distance fiber optic monitoring system having a sensing unit and an analyzer that is remotely located from the sensing unit is provided. The sensing unit comprises a source of optical energy for injecting optical energy into the fiber optical cable and an optical detector configured to detect an optical...

Photoacoustic apparatus and method for controlling the same
02/07/13 - 20130031982 - A photoacoustic apparatus includes a light source configured to irradiate an analyte with light; an optical system configured to guide the light from the light source to the analyte; a detecting unit including a receiving element configured to receive an acoustic wave generated in the analyte by the light; a...

Sweep-free stimulated brillouin scattering-based fiber optical sensing
01/31/13 - 20130025374 - Methods and systems used to perform sweep-free stimulated Brillouin scattering-based fiber optical sensing are described. In one aspect, a method includes interrogating different parts of a Brillouin gain spectrum using multiple optical tones in an optical fiber. The interrogating includes sending at least two pump tones into the optical fiber...

Fiber optic pipeline monitoring systems and methods of using the same
01/31/13 - 20130025375 - An optical detection system for monitoring a pipeline. The optical detection system includes a host node in the vicinity of or remote from, a pipeline to be monitored. The optical detection system includes (a) an optical source for generating optical signals, and (b) an optical receiver. The optical detection system...

Gyroscope sensors
01/03/13 - 20130000409 - A gyroscope sensor includes a gyro disk. A first light source is configured to provide a first light beam. A first light receiver is configured to receive the first light beam for sensing a vibration at a first direction of the gyro disk. A second light source is configured to...

Measuring apparatus
12/27/12 - 20120325006 - A measuring apparatus includes: laser sources; and a control unit for outputting an excitation start signal that instructs the laser light sources to start excitation, and outputting an oscillation start signal to instruct the laser light sources to start oscillation after a predetermined time has elapsed from the output of...

Photoacoustic measuring apparatus
12/20/12 - 20120318066 - The present invention employs a photoacoustic measuring apparatus including: a laser light source; a forming unit for forming a second light beam by dividing or deforming a laser light beam; an optical member for guiding the second light beam to the surface of a subject; a probe for obtaining a...

Pulse labeling for high-bandwidth fiber-optic distributed acoustic sensing with reduced cross-talk
11/29/12 - 20120297883 - The present invention relates to distributed acoustic sensing using fiber-optic system. More particularly, the present invention describes use of frequency pulse labeling techniques and wavelength pulse labeling techniques for providing high bandwidth acoustic sensing in applications such as infrastructure monitoring. In one embodiment, a segmented sensing fiber is used with...

Method and system for locating a laser vibrometer during non-contact scanning
10/25/12 - 20120266680 - A method and system are provided for inspecting a surface of an object with an optical scanner and a laser vibrometer. The method includes the steps of: (a) mapping at least a portion of the object surface using the optical scanner; (b) projecting a beam of light from the laser...

Self cleaning optical probe
10/11/12 - 20120255361 - An optical probe comprising an elongate hollow body having an internal chamber for receiving an optical sensor and/or an light emission device, such as one or more optical fibres, an optical window being provided at a first end of the hollow body, said optical window defining a wall of said...

Method and system for enhancing the spatial resolution of a fiber optical distributed acoustic sensing assembly
10/11/12 - 20120255362 - processing the received back reflections (6A, 6B) such that back reflections stemming from at least one pair of channels (C1, C14; C2,C13) that are arranged at least partially side by side are correlated to each other....

Fiber optic acoustic sensor arrays and systems, and methods of fabricating the same
09/13/12 - 20120227504 - A fiber optic acoustic sensor system. The fiber optic acoustic sensor system includes an optical source, and a fiber optic acoustic sensor array configured to receive an optical signal from the optical source. The fiber optic acoustic sensor array includes a core, a first polymer layer disposed on the core,...

Optic fibres and fibre optic sensing
09/06/12 - 20120222487 - Fibre optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fibre optic cable (210) comprises a core (208) and cladding (206) disposed within a buffer material (202) and surrounded by a jacket (204) and arranged so that...

Device and method for spectroscopically detecting molecules
08/23/12 - 20120210796 - A method and a device for spectroscopic detection of molecules, containing a resonance body, an apparatus for identifying a vibration of the resonance body and at least one laser light source, the laser light of which interacts with the molecules to be detected and which is designed to emit light...

Vibration sensor
08/16/12 - 20120204651 - A sensor includes a housing adapted to be secured to a component within a system to be monitored by the sensor, an optical fiber, and a membrane spring assembly. The optical fiber includes a sensing portion containing a fiber Bragg grating that is able to undergo expansion and contraction resulting...

Rig for measuring bladed component mistuning
08/09/12 - 20120198938 - A rig for studying a component has a component support for mounting the component. A speaker applies sound energy to airfoils in the component. A vibrometer studies the effect of the applied sound on the airfoils. At least two of the vibrometer, the component support, and the speaker are rotatable...

Method and kit for stand-off detection of explosives
07/26/12 - 20120186352 - A kit for detecting the presence of an explosive includes a pulsed focused energy source located at a target distance away from a substrate, the energy having a magnitude sufficient to release the internal energy of an explosive if present on the substrate and thereby generate an acoustic wave. The...

Optical method and device for a spatially resolved measurement of mechanical parameters, in particular mechanical vibrations by means of glass fibers
07/12/12 - 20120174677 - The invention relates to a device for a spatially-resolved measurement of mechanical parameters, in particular mechanical vibrations, comprising at least one optical fiber (3) for measuring at least one mechanical parameter with spatial resolution, at least one laser light source (1), the light from which can be coupled into the...

Acoustic wave measuring apparatus, acoustic wave imaging apparatus and method for controlling acoustic wave measuring apparatus
07/05/12 - 20120167693 - An acoustic wave measuring apparatus includes a light source for radiating a light having a wavelength component in wavelength areas, light filters arranged in a light path from the light source to a subject and each to shut off or transmit the light in one of the wavelength areas, a...

Distributed acoustic sensing (das)-based flowmeter
06/21/12 - 20120152024 - Methods and apparatus for sensing fluid flow within a conduit using a Distributed Acoustic Sensing (DAS) system. The DAS system may lower production costs and may offer some technical advantages over fiber Bragg grating (FBG)-based flowmeters such as auxiliary measurement of strain from the wellhead down to the flowmeter. The...

Fibre optic acoustic sensing
06/07/12 - 20120137781 - This invention relates to the fibre optic distributed acoustic sensing to detect P and S waves in a solid medium. Distributed acoustic sensing can be achieved using an unmodified fibre optic by launching optical pulses into the fibre and detecting radiation which is Rayleigh backscattered there from. By analysing the...

Method and apparatus for optical sensing
03/15/12 - 20120060615 - The present invention provides novel apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre. The present invention can be used for point sensors as well as distributed sensors or the combination of both. In particular this...

Remote sensing
01/26/12 - 20120017687 - A plurality of sensors output information into a distributed acoustic sensing (DAS) system via acousto-mechanical signals. The sensors are coupled to the optic fibre at the centre of the DAS system indirectly, the acousto-mechanical signal being transmitted via an intermediary body, such as the ground or a conduit....

Integrated optical and acoustic transducer device
08/25/11 - 20110203378 - An integrated transducer device includes an optical transducer and an acoustic transducer integrally joined with the optical transducer. The acoustic transducer includes a membrane responsive to acoustic signals, the membrane being aligned with the optical transducer such that optical signals emitted or received by the optical transducer pass through the...

Detection of deposits in flowlines
08/04/11 - 20110185815 - A method 2 of determining the location of deposits in a flowline comprises providing 4 a distributed vibration sensor along the flowline, measuring 6 vibrations along the flowline with the sensor and analysing 8 the measured vibrations to determine the location of any deposits. The vibration measurements are made using...

Optical fiber type vibration meter
07/14/11 - 20110167916 - An optical fiber type vibration meter including a light source, an incident side optical fiber guiding light from the light source, a vibration probe to which a guided light is made incident, an optical receiver photoelectric-converting light modulated by a vibration of a weight and a movable coil arranged in...

Systems and methods for measuring turbine blade vibratory response
07/07/11 - 20110162457 - Certain embodiments of the invention may include systems and methods for measuring turbine blade vibratory responses. According to an example embodiment of the invention, a method is provided for measuring a vibratory response of a plurality of turbine blades. The method can include mounting an optical probe comprising at least...

Device for measuring the relative alignment of two articles, method for determining a quality characteristic and vibration measurement device and method
05/19/11 - 20110113888 - An alignment device with one or two optoelectronic transmitting and/or receiving units and an evaluation unit. At least one optoelectronic transmitting and/or receiving unit contains an inclinometer. Furthermore, the transmitting and/or receiving unit is connected to a vibration sensor which can be the inclinometer. Both the result of the alignment...

Earthquake detection and alarming apparatus
02/24/11 - 20110041615 - In one aspect, the present invention is directed to an earthquake detection and alarming apparatus, comprising: a transparent object (46) having a concave surface on the top thereof; a rollable object (34) placed on the concave surface; an apiary of light projectors (30) placed above the concave surface; an apiary...

Optical fiber vibration sensor
11/11/10 - 20100281985 - An optical fiber vibration sensor includes a light source, an optical receiver, an optical dividing/coupling part, a signal processing unit, and a fiber loop part made of an optical fiber. A part of an optical fiber composing the fiber loop part is installed outside a housing of a main body...

Apparatus, systems and methods for production and integration of compact illumination schemes
09/16/10 - 20100229650 - Apparatus, systems and methods are provided for production and integration of compact illumination schemes. More particularly, disclosed embodiments relate to apparatus/systems and methods for production of highly compact illumination schemes, whereby photoacoustic waves are induced in a target sample. Additionally, the disclosed apparatus/systems and methods are effective to produce compact...