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Measuring And Testing > Vibration > Sensing Apparatus > With Light Beam Indicator

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.

08/21/14 - 20140230558 - Process and apparatus for cleaning a surface
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...

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

07/17/14 - 20140196544 - Object information acquiring apparatus
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...

07/03/14 - 20140182383 - Object information obtaining device, display method, and non-transitory computer-readable storage medium
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...

07/03/14 - 20140182384 - Object information acquisition apparatus, display method, and non-transitory computer-readable storage medium
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...

07/03/14 - 20140182385 - Photoacoustic probe and photoacoustic device having the same
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...

05/15/14 - 20140130601 - Rf-photonic system for acoustic and/or vibrational sensing using optical fiber and method thereof
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....

05/08/14 - 20140123762 - Laser apparatus and photoacoustic apparatus using laser apparatus
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...

04/24/14 - 20140109678 - Laser apparatus and control method thereof
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...

04/17/14 - 20140102204 - Probe, object information acquisition apparatus, and method of manufacturing the probe
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;...

04/03/14 - 20140090474 - Long distance optical fiber sensing system and method
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...

03/20/14 - 20140076055 - Acoustic wave receiving apparatus
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...

03/13/14 - 20140069196 - Device for measuring the relative alignment of two articles, method for determining a quality characteristic and vibration measurement device and method
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...

02/13/14 - 20140041456 - Method and device for the optical non-contact oscillation measurement of an oscillating object
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...

12/19/13 - 20130333476 - Method of measuring acoustic distribution and distributed acoustic sensor
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...

12/19/13 - 20130333477 - Measuring system
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...

12/05/13 - 20130319122 - Laser-based edge detection
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...

12/05/13 - 20130319123 - Photoacoustic probe
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...

11/07/13 - 20130291642 - Fibre optic distributed sensing
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...

11/07/13 - 20130291643 - Detecting the direction of acoustic signals with a fiber optical distributed acoustic sensing (das) assembly
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)....

10/24/13 - 20130276542 - Light output calibration in an optoacoustic system
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...

10/10/13 - 20130263669 - Probe and manufacturing method thereof, and object information acquisition apparatus using the same
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...

10/03/13 - 20130255388 - Probe and object information acquisition apparatus using the same
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...

10/03/13 - 20130255389 - Probe and object information acquisition apparatus using the same
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...

09/12/13 - 20130233084 - Method and apparatus of detecting an object
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...

08/08/13 - 20130199299 - Quantification of optical absorption coefficients using acoustic spectra in photoacoustic tomography
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...

08/08/13 - 20130199300 - Apparatus and method for obtaining object information and non-transitory computer-readable storage medium
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...

07/04/13 - 20130167648 - Object information acquiring apparatus
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...

06/27/13 - 20130160557 - Acoustic wave acquiring apparatus
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...

06/27/13 - 20130160558 - Photoacoustic imaging apparatus and control method thereof
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...

06/27/13 - 20130160559 - Photoacoustic wave measuring apparatus
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...

06/20/13 - 20130152692 - Measuring apparatus and measuring method for metallic microstructures or material properties
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...

06/06/13 - 20130139600 - Gunfire detection
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...

05/16/13 - 20130118262 - Constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method
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...

05/09/13 - 20130112001 - Acoustic wave detector and acoustic wave measurement apparatus
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...

04/04/13 - 20130081472 - Long distance optical fiber sensing system and method
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...

02/07/13 - 20130031982 - Photoacoustic apparatus and method for controlling the same
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...

01/31/13 - 20130025374 - Sweep-free stimulated brillouin scattering-based fiber optical sensing
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...

01/31/13 - 20130025375 - Fiber optic pipeline monitoring systems and methods of using the same
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...

01/03/13 - 20130000409 - Gyroscope sensors
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...

12/27/12 - 20120325006 - Measuring apparatus
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...

12/20/12 - 20120318066 - Photoacoustic measuring apparatus
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...

11/29/12 - 20120297883 - Pulse labeling for high-bandwidth fiber-optic distributed acoustic sensing with reduced cross-talk
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...

10/25/12 - 20120266680 - Method and system for locating a laser vibrometer during non-contact scanning
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...

10/11/12 - 20120255361 - Self cleaning optical probe
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...

10/11/12 - 20120255362 - Method and system for enhancing the spatial resolution of a fiber optical distributed acoustic sensing assembly
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....

09/13/12 - 20120227504 - Fiber optic acoustic sensor arrays and systems, and methods of fabricating the same
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,...

09/06/12 - 20120222487 - Optic fibres and fibre optic sensing
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...

08/23/12 - 20120210796 - Device and method for spectroscopically detecting molecules
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...

08/16/12 - 20120204651 - Vibration sensor
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...

08/09/12 - 20120198938 - Rig for measuring bladed component mistuning
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...