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| Number | Title | Issue Date |
| 8164044 | Watertight connection system for combined electrical and fiber optic cables A connector apparatus for use with combined electrical and fiber optic cables in wet or undersea conditions. The connector apparatus includes an outer threaded male connector portion connected to a first cable and a compatible female connector portion having a rotat... | 04/24/2012 |
| 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 assembly adapted to react after being exposed to a predetermined quantity of... | 08/24/2010 |
| 7411176 | Method and apparatus for examining corrosion of tendon embedded in concrete The present invention measures the strain caused by the shrink and expansion from the corrosion and examines the corrosion of a tendon for a long term with high sensitivity to improve the accuracy of the examination. ... | 08/12/2008 |
| 7406219 | Light-speed hitpoint sensor The present invention is directed to a hitpoint sensor for a surface of interest, the hitpoint sensor having an optical fiber which is wound around or otherwise covering the surface, and a data processor connected to the ends of the optical fiber. When a collision w... | 07/29/2008 |
| 7405391 | Modular sensor for damage detection, manufacturing method, and structural composite material A modular sensor for damage detection with an optical fiber (FBG sensor) to detect a damage of a composite material, having a high level of visibility and manageability, and its manufacturing method is described. A structural composite material embedded with this mo... | 07/29/2008 |
| 7394060 | Tamper detection system having plurality of inflatable liner panels with optical couplers An inflatable sheet includes an optical fiber extending across at least a portion of its surface to detect a breach or nuclear radiation. The sheet can line at least a portion of a container or several such sheets can line several walls of the container. A breach of... | 07/01/2008 |
| 7385506 | Break-in detection sensor Intrusion by climbing or jumping over a fence can be detected, and intrusion is detected in a wide area without large-scale equipment. FBGs (grating sections) of different types having different refractive indexes of fiber glass are arranged at predetermined interva... | 06/10/2008 |
| 7371217 | Device for the non-invasive measurement of blood glucose concentration by millimeter waves and method thereof A device and method for the non-invasive measurement of blood glucose concentrations by millimeter waves. The device includes a millimeter wave generator; a TE10 mode rectangular waveguide transmitting a millimeter wave generated by the millimeter wave generator; an... | 05/13/2008 |
| 7373056 | High-voltage component with optical fiber and method for producing it A high-voltage component, having a first end and a second end, whereby the first end is on a high-voltage potential with respect to the second end. An insulating part, is arranged between the first end and the second end, and an optical fiber is integrated in the hi... | 05/13/2008 |
| 7356238 | Optical fiber measuring module having base member holding optical fiber cable An optical fiber measuring module is provided with an optical fiber cable (2) including an optical fiber core (2a), a cladding (2b) and a covering layer (2c), a base member (3) for holding the optical fiber cab... | 04/08/2008 |
| 7334485 | System, method and computer-readable medium for locating physical phenomena A method, system and computer product for detecting the location of a deformation of a structure includes baselining a defined energy transmitting characteristic for each of the plurality of laterally adjacent conductors attached to the structure. Each of the plural... | 02/26/2008 |
| 7324714 | Multicore fiber curvature sensor An apparatus includes a multicore fiber including three cores. The three cores include two pairs of cores, each pair of cores lying in a plane. The planes of the two pairs of cores are non-coplanar. The multicore fiber includes a rosette, the rosette including three... | 01/29/2008 |
| 7291856 | Sensor and methods for measuring select components in moving sheet products A compact, long lasting sensor for measuring components such as moisture in moving sheets including paper in a papermaking apparatus employs light sources that produce radiation within defined wavelength regions of interest and the light sources are modulated at hig... | 11/06/2007 |
| 7274835 | Optical waveguide displacement sensor A substrate incorporates a mechanical cantilever resonator with passive integrated optics for motion detection. The resonator acts as a waveguide, and enables optical detection of deflection/displacement amplitude, including oscillations. In one embodiment, the cant... | 09/25/2007 |
| 7274458 | Thermoplastic film having metallic nanoparticle coating The present invention is directed to an article comprising a thermoplastic polymer film and a discontinuous metallic nanoparticle coating, of an average size less than 100 nm, and the process for preparing the same. The coated film may be further stretched or shrunk... | 09/25/2007 |
| 7264309 | Method and apparatus for attaching sensors to a seat assembly A vehicle seat assembly includes a sensor assembly that is used to provide data for an occupant classification system. The data is used to determine such characteristics as seat occupant weight and position. These characteristics are used to control deployment of a ... | 09/04/2007 |
| 7260294 | Wavelength tuning device and wavelength tuning method A wavelength tuning device of the invention tunes the reflected wavelength of a fiber Bragg grating, and includes: an optical fiber (102) in which a fiber Bragg grating (106) is formed; a base member (104) to which the optical fiber (102 ... | 08/21/2007 |
| 7245791 | Compaction monitoring system Methods for determining a preferred application of a plurality of transducers or sensors to a structure are disclosed for monitoring and imaging deformation of the structure as it is subjected to various forces. ... | 07/17/2007 |
| 7244122 | Methods for determining optical characteristics of dental objects Color measuring systems and methods such as for determining the color or other characteristics of teeth are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object/tooth... | 07/17/2007 |
| 7242824 | Flexible substrate for routing fibers in an optical transceiver An optical transceiver for converting and coupling an information-containing electrical signal with an optical fiber including a housing, an electro-optical subassembly in the housing for converting between an information-containing electrical signal and a modulated... | 07/10/2007 |
| 7240839 | Color measurement apparatus operable as a pointing device, a computer display measurement device and a printer output measurement device A color measurement apparatus is adapted as an attachment for a personal computing system. An interface integral to the color measurement apparatus couples the color measurement apparatus to the personal computing system. A computer pointing device integral to the c... | 07/10/2007 |
| 7238007 | Rotor blade of a wind power installation, comprising a warning light The object of the invention is to provide lighting for the rotor blade tips, which is more reliable than that proposed hitherto, wherein any damage which occurs is no longer so complicated and expensive to rectify as hitherto, but can be rectified extremely swiftly.... | 07/03/2007 |
| 7227465 | Security bar with fiber optic cable based security monitoring A security bar providing improved security from breach is obtained with the use of a fiber optic cable longitudinally inserted in a hollowed out cavity thereof. Monitoring of the security bar to identify attempts at breach thereof may be achieved by connecting an op... | 06/05/2007 |
| 7209605 | Packaged optical sensors on the side of optical fibers The present invention concerns an optical sensor located on a preferred azimuthal portion of the side of an optical fiber. An optical fiber having two opposite ends, a core and a cladding and at least one sensing area is disclosed. Each of the sensing areas is locat... | 04/24/2007 |
| 7206259 | Ultrasound sensor and ultrasound measurement device An ultrasound sensor consists of an optical fiber having an active portion with high birefringence and two non-active portions located at each end of the active portion. A bragg grating is provided in the fiber. An ultrasound measurement device includes an ultrasoun... | 04/17/2007 |
| 7199869 | Combined Bragg grating wavelength interrogator and Brillouin backscattering measuring instrument A method and apparatus sense attributes of reflected signals in an optical sensing system. In one embodiment, a method for sensing in an optical sensing system comprising an interrogator coupled to a Bragg grating sensor by an optical cable includes the steps of pro... | 04/03/2007 |
| 7196318 | Fiber-optic sensing system The invention provides a fiber-optic sensing system, utilizing a fiber-grating-based sensor, for a physical parameter, e.g., a pressure or a temperature. Different kinds of fiber-grating-based sensors may be used for this purpose but in-fiber gratings such as Fiber ... | 03/27/2007 |
| 7176448 | Damage detection system for structural composite material and method of detecting damage to structural composite material Damage caused to a structural composite material is detected while reduction in the strength thereof is prevented. A damage detection system 10 for a structural composite material includes a vibration application apparatus 20 including: a sheet body | 02/13/2007 |
| 7154081 | Composite structures, such as coated wiring assemblies, having integral fiber optic-based condition detectors and systems which employ the same Integral fiber optic-based condition sensors detect conditions of a composite structure, e.g., a coated wire assembly so as to detect damage or conditions that may damage the same. Preferably, at least one optical fiber sensor having a plurality of Bragg gratings wr... | 12/26/2006 |
| 7151249 | Method for determining the cut-off wavelength of an optical fibre as well as a device suitable for that purpose The present invention relates to a method and a device for determining the cut-off wavelength of an optical fiber. A first aspect of the present invention is to provide a method for determining the cut-off wavelength of an optical fiber, which method provides a stab... | 12/19/2006 |
| 7137299 | Fiber optic accelerometer A proof mass is suspended in a cavity in a housing. The proof mass moves along a sensing axis in response to linear acceleration. Elastic support members are connected between the proof mass and the housing and are arranged to exert a reaction force on the proof mas... | 11/21/2006 |
| 7122783 | Seismic activity monitor based on optical fiber Bragg gratings Fiber Bragg gratings (FBG) seismic activity sensors coupled in sensor arrays provide increased sensitivity to seismic activities, lower strain values and an absence of EMI allowing detection of troop and vehicle movements based on ground vibrations generating seismi... | 10/17/2006 |
| 7114395 | Vibration detector A small photodetector type microphone (10) exhibiting excellent directivity without requiring any mirror surface. A diaphragm (27) vibrates in response to a sound pressure. An optical waveguide (28) is formed along the diameter of the diaphragm ... | 10/03/2006 |
| 7113657 | Laser display device and method for controlling the same A laser display device and a method for controlling the same are disclosed. The laser display device includes a laser light source generating laser beams, an optical fiber transmitting the laser beams generated from the laser light source, and a light phase controll... | 09/26/2006 |
| 7113283 | Apparatus and method for measuring color Color measuring systems and methods are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object being measured. Light from the perimeter fiber optics pass to a variety o... | 09/26/2006 |
| 7110096 | Method for determing optical characteristics through a protective barrier Color/optical characteristics measuring systems and methods are disclosed. Perimeter receiver fiber optics/elements are spaced apart from a central source fiber optic/element and received light reflected from the surface of the object is measured. Light from the per... | 09/19/2006 |
| 7104331 | Optical position sensing for well control tools An apparatus and methods are disclosed for using optical sensors to determine the position of a movable flow control element in a well control tool. A housing has a movable element disposed within such that the element movement controls the flow through the tool. An... | 09/12/2006 |
| 7098445 | Load detecting device A pressure-sensitive sensor which is a load detecting device of the present invention is structured to include: an optical fiber of a predetermined length; a light-emitting element, disposed at a longitudinal direction one end side of the optical fiber, for emitting... | 08/29/2006 |
| 7097450 | Methods for determining color or shade information of a dental object using an image generation device without operator identification of the position of a reference implement in the field of view of the image generation device Color measuring systems and methods such as for determining the color or other characteristics of teeth are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object/tooth... | 08/29/2006 |
| 7099545 | Single-mode optical fiber Provided is a single-mode optical fiber that propagates an optical signal at a wavelength of 1310 nm, in single-mode operation; has a mode field diameter of 6.6 μm or more at the wavelength of 1310 nm; and a macro bending loss of at most 0.1 dB/10 turns with a bend... | 08/29/2006 |
