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9019481 Colored noise reduction method and device for optical remote airflow measurement apparatus  
An object of the present invention is to provide an optical remote airflow measurement apparatus with which even colored noise corresponding to an external environment of the apparatus can be...
9019482 Optical device with fiber Bragg grating and narrowband optical source  
In certain embodiments, an optical device and a method of use is provided. The optical device includes a fiber Bragg grating having a substantially periodic refractive index modulation along a...
8983287 Fiber optic personnel safety systems and methods of using the same  
A personnel monitoring system. The personnel monitoring system includes a host node having an optical source for generating optical signals, and an optical receiver. The personnel monitoring...
8891071 Apparatus and method for detecting pressure signals  
An apparatus comprising an encoded pressure signal propagating in a fluid flowing in a conduit. An optical fiber measurement element has a reflector on one end and is disposed around at least a...
8879052 Floating-element shear-stress sensor  
A shear-stress sensing system can include a floating element whose displacement can be detected through use of optical measurements. The system can utilize high temperature materials to deliver...
8873028 Non-destructive stress profile determination in chemically tempered glass  
Apparatus, systems and methods for improving strength of thin cover glass for electronic devices are disclosed. Optical coherence tomography analysis may reveal fine details of a residual stress...
8867026 Chip-scale optomechanical gravimeter  
An method and apparatus for measuring gravitational force are described where at least one first radiation can be provided to at least one optomechanical oscillator, the at least one...
8797514 Localized dynamic light scattering system with doppler velocity measuring capability  
A localized dynamic light scattering measurement system includes a beam displacer for splitting an incident beam having two orthogonal linearly polarized beam components with slightly different...
8797515 Deformation measuring apparatus and deformation measuring method  
An apparatus and a method capable of measuring large deformation with a high accuracy and dynamically, using speckle interference, utilizes an optical path where one laser beam out of two laser...
8788222 Detection of pipeline contaminants  
A computer-implemented method, system, and/or computer program product detects contaminants in a pipe that is transporting a known fluid. A baseline vibration pattern is established from readings...
8779943 Method of and apparatus for monitoring the condition of structural components  
The present invention relates to a method of monitoring the condition of structural components, in which an optical sensor in conjunction with a computing unit ascertains image deviations from...
8748851 Material aging apparatus  
An aging apparatus including a pulse laser, a beam expansion assembly, and a platform configured to carry an object is provided. The pulse laser transmits a first beam to the beam expansion...
8736823 Methods and processes for optical interferometric or holographic test in the development, evaluation, and manufacture of semiconductor and free-metal devices utilizing anisotropic and isotropic materials  
Analysis and characterization of semiconductor and free-metal devices using a plurality of “live” and stored interference patterns or data detected to determine or generate two-dimensional or...
8736822 Apparatus and method for detecting pressure signals  
An apparatus to detect a pressure signal in a fluid flowing in a conduit comprises a flexible band sized to fit at least partially around the conduit. An optical fiber is flexibly adhered to the...
8659762 Optical measuring element having a single-piece structure  
An optical measuring element measures forces in at least one direction. The measuring element has a single-piece structure. There is an outside wall with notches introduced therein. Each notch...
8610899 Rotational and linear system and methods for scanning of objects  
A scanning system comprised of a multi-axis drive module comprised of a first linear drive operable along a first axis, a second linear drive joined to the first linear drive and operable along a...
8610896 Apparatus and method for detecting pressure signals  
An apparatus for detecting data in a fluid pressure signal in a conduit comprises an optical fiber loop comprises a measurement section and a delay section wherein the measurement section is...
8596128 Directed acoustic shearography  
A nondestructive evaluation system, consisting of a metrology device and a directable acoustic transducer, is used to measure the variation of the surface when stress is applied. The directable...
8576386 Detecting particulate contaminants in a fluid  
A vibration detector (1) comprising at least one fiber optic sensor (2) mechanically coupled to a flexible support member (3). The vibration detector (1) is mounted on the outside of the pipeline...
8558994 EFPI sensor  
An apparatus for estimating a property, the apparatus includes: a hollow core tube having a first opening and a second opening; a first optical waveguide disposed within the first opening; and a...
8548619 System and method for after-market support using as-built data  
A maintenance system for an assembly comprises a storage medium containing an as-built computer-aided design model of the assembly, a displaying means for displaying the as-built computer-aided...
8537368 Method of detecting an acceleration  
A method detects an acceleration. The method includes providing a spatial mode filter positioned such that light emitted from the spatial mode filter is reflected by at least a portion of a...
8463085 Systems and methods for monitoring a condition of a rotor blade for a wind turbine  
A rotor blade monitoring system for use with a wind turbine. The wind turbine includes at least one rotor blade. The rotor blade includes a sidewall that extends between a root portion and a tip...
8432552 High intensity Fabry-Perot sensor  
A sensor assembly having an optical fiber, a lens in optical communication with the optical fiber, a reflective surface spaced from the lens, for reflecting light from the beam back to the lens, a...
8411068 Method for detecting users' pressing action and optical operating unit  
A method for detecting users' pressing action is applied to an electronic apparatus which has at least an optical operating unit for an user to operate the electronic apparatus. The method...
8405823 Optical to optical infrared imaging detection system  
An improved optical infrared and ultraviolet imaging system including a first imaging device that is sensitive to a light which creates a photocurrent or changes in electric field or stresses...
8400620 Registration of an extended reference for parameter measurement in an optical sensing system  
An interferometric measurement system measures a parameter using at least one optical waveguide. A memory stores reference interferometric pattern data associated with a segment of the optical...
8214162 Estimation of non-equibiaxial stress using instrumented indentation technique  
Method for evaluating an asymmetric residual stress for a material by the indentation test comprises applying the residual stresses with an uniaxial and an symmetrical biaxial tensions on the...
8205504 Micron-scale pressure sensors and use thereof  
An optical fiber sensing device for detecting physical parameters such as pressures, strains and temperatures comprises a probe housing therein an optical fiber. The distal end of the probe houses...
8195015 Method and device for dynamic measurement of the radial deformation of a rolling bearing ring  
A method and a device for dynamic measurement of the radial deformation of a bearing ring (12) of a rolling bearing (10) for a rotating element (16), a glass fiber segment (22) of a fiber optic...
8182099 Noise immune optical encoder for high ambient light projection imaging systems  
A method and apparatus for bitstream modulation of an infrared light source used by an optical sensor in a stereoscopic projection system, combined with a bitstream filter on the receiver electronics.
8058869 Fiber laser magnetic field sensor  
The device includes two supports and a primary conductive strip. The primary conductive strip includes a neutral surface, a first side, and a second side. The primary conductive strip is connected...
8031988 Apparatus for pressure sensing  
The present invention provides an apparatus for pressure sensing. The apparatus comprises a light guide, a Bragg grating incorporated into the light guide and a moveable wall portion. The moveable...
8028343 Scanning probe microscope with independent force control and displacement measurements  
A nanoindenter that includes an interferometer, a rod, a force actuator and a controller is disclosed. The interferometer generates a light beam that is reflected from a moveable reflector, the...
7973914 Physical quantity measuring apparatus utilizing optical frequency domain reflectometry and method for temperature and strain measurement using the apparatus  
A physical quantity measuring apparatus utilizing optical frequency domain reflectometry includes a tunable laser; a first polarization maintaining fiber; a polarization maintaining coupler; a...
7966135 Characterizing curvatures and stresses in thin-film structures on substrates having spatially non-uniform variations  
Techniques and devices are described to use spatially-varying curvature information of a layered structure to determine stresses at each location with non-local contributions from other locations...
7961331 Sensing a disturbance along an optical path  
The present invention relates to a system for sensing a disturbance in a sensing region along an optical path. The sensing system includes: a source of optical radiation; an upstream junction for...
7929120 Apparatus for controlling optical fringe generation member based on detected optical fringe and method therefor  
An optical fringe generation member control apparatus is provided. The control apparatus includes a detection unit that is configured to detect an optical fringe. Further, the control apparatus...
7894077 Multi-directional projection type moire interferometer and inspection method of using the same  
A multi-directional projection type moiré interferometer includes a stage, an image formation part, rotating mirrors, fixed mirrors, and a pattern illumination generating part. The stage moves a...
7889332 Physical quantity measuring apparatus utilizing optical frequency domain reflectometry, and method for simultaneous measurement of temperature and strain using the apparatus  
A physical quantity measuring apparatus utilizing optical frequency domain reflectometry of the invention includes a tunable laser; a first polarization-maintaining fiber; a...
7884924 Residual stress measuring method and system  
A residual stress measuring method capable of measuring residual stress of the surface of an object to be inspected rapidly in a non-destructive non-contact manner, as well as a residual stress...
7860297 Method and apparatus for detecting the deformation of objects  
In a method for detecting the deformation of objects (1), a sequence of pictures of the object (1) is taken with a measurement method during the deformation of the object (1). From the pictures,...
7782465 High intensity fabry-perot sensor  
A method and apparatus for detecting seismic vibrations using a series of MEMS units, with each MEMS unit including an interferometer is described. The interferometers on the MEMS units receive...
7781725 Optical fiber based sensor system suitable for monitoring remote aqueous infiltration  
Methods and apparatus for predicting service life of remote equipment for infiltration of liquid are disclosed. Such methods and apparatus preferably include at least one fiber optic sensor...
7755746 Device for testing a test object, in particular a tire, by means of a non-destructive measuring method  
A non-destructive tire testing device has at least one measuring head, a positioning means for moving the measuring head between a park position (I) and a measuring position (II), a pressure...
7728958 Condition assessment method for a structure including a semiconductor material  
An improved condition testing system and method includes a structure including a semiconductor material with a target portion and a second portion. The target portion has a first feature when at...
7701586 Micro-optical wall shear stress sensor  
Stresses and strains on a solid surface subject to a fluid flow are dynamically measured based on a shift of optical resonances of a micro-resonator. The elastic deformation and refractive index...
7697121 Sensing system having wavelength reflectors that receive modulated light signals  
The sensing system includes a plurality of modulators that are each configured to modulate a different light signal. The sensing system also includes optical pathways that transport the modulated...
7636151 System and method for providing residual stress test structures  
The invention comprises systems and methods determining residual stress such as that found in interferometric modulators. In one example, a test unit can be configured to indicate residual stress...
7599047 Method and system for simultaneous measurement of strain and temperature  
A method and system for simultaneously measuring strain and temperature characteristics of an object involves the attachment to the object of a pair of optical fibers having different refractive...

Matches 1 - 50 out of 266 1 2 3 4 5 6 >