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Class Information
Number: 250/227.16
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light conductor > Condition responsive light guide (e.g., light guide is physically affected by parameter sensed which results in light conveyed to the photocell) > With detection of fiber microbend caused by parameter affecting fiber
Description: Subject matter in which a photodetector sense a small scale, i.e., micro, bend in an optical fiber caused by a parameter such as pressure, temperature, stress or strain, etc.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7446304 |
Detection of collisions in medical procedures |
Nov. 4, 2008 |
| 7411176 |
Method and apparatus for examining corrosion of tendon embedded in concrete |
Aug. 12, 2008 |
| 7406219 |
Light-speed hitpoint sensor |
Jul. 29, 2008 |
| 7405391 |
Modular sensor for damage detection, manufacturing method, and structural composite material |
Jul. 29, 2008 |
| 7394060 |
Tamper detection system having plurality of inflatable liner panels with optical couplers |
Jul. 1, 2008 |
| 7385506 |
Break-in detection sensor |
Jun. 10, 2008 |
| 7373056 |
High-voltage component with optical fiber and method for producing it |
May. 13, 2008 |
| 7324714 |
Multicore fiber curvature sensor |
Jan. 29, 2008 |
| 7291856 |
Sensor and methods for measuring select components in moving sheet products |
Nov. 6, 2007 |
| 7274458 |
Thermoplastic film having metallic nanoparticle coating |
Sep. 25, 2007 |
| 7227465 |
Security bar with fiber optic cable based security monitoring |
Jun. 5, 2007 |
| 7196318 |
Fiber-optic sensing system |
Mar. 27, 2007 |
| 7176448 |
Damage detection system for structural composite material and method of detecting damage to structural composite material |
Feb. 13, 2007 |
| 7154081 |
Composite structures, such as coated wiring assemblies, having integral fiber optic-based condition detectors and systems which employ the same |
Dec. 26, 2006 |
| 7151249 |
Method for determining the cut-off wavelength of an optical fibre as well as a device suitable for that purpose |
Dec. 19, 2006 |
| 7122783 |
Seismic activity monitor based on optical fiber Bragg gratings |
Oct. 17, 2006 |
| 7104331 |
Optical position sensing for well control tools |
Sep. 12, 2006 |
| 7099545 |
Single-mode optical fiber |
Aug. 29, 2006 |
| 7098445 |
Load detecting device |
Aug. 29, 2006 |
| 7091472 |
Sensor interface |
Aug. 15, 2006 |
| 7003201 |
Flexible factory joint for metallic tubes which enclose loosely inside them optical fibers and its method of construction |
Feb. 21, 2006 |
| 6998599 |
Intensity modulated fiber optic microbend accelerometer |
Feb. 14, 2006 |
| 6983096 |
Attenuation of cladding modes in optical fibers |
Jan. 3, 2006 |
| 6933490 |
Method and device for fiber-optical measuring systems |
Aug. 23, 2005 |
| 6920256 |
Fiber optic occupant or object classification system |
Jul. 19, 2005 |
| 6901101 |
Optical sensor for measuring physical and material properties |
May. 31, 2005 |
| 6816638 |
Strain sensing |
Nov. 9, 2004 |
| 6813403 |
Monitoring of large structures using brillouin spectrum analysis |
Nov. 2, 2004 |
| 6788295 |
Touch pad using a non-electrical deformable pressure sensor |
Sep. 7, 2004 |
| 6781113 |
Fiber bragg grating strain sensor with arc configuration |
Aug. 24, 2004 |
| 6778717 |
Apparatus and method for monitoring a structure using a counter-propagating signal method for locating events |
Aug. 17, 2004 |
| 6756580 |
Fiber grating bond joint health monitoring system |
Jun. 29, 2004 |
| 6753520 |
Fiber optic sensor with transmission/reflection analyzer |
Jun. 22, 2004 |
| 6748128 |
Device for changing the length of the running path of an electromagnetic wave |
Jun. 8, 2004 |
| 6734411 |
Method and apparatus for controlling power levels of optical signals in optical fiber interconnects |
May. 11, 2004 |
| 6720550 |
Sensor assembly |
Apr. 13, 2004 |
| 6718078 |
High sensitivity fiber optic rotation sensor |
Apr. 6, 2004 |
| 6683297 |
Fiber grating moisture and chemical sensing system |
Jan. 27, 2004 |
| 6677576 |
Fiberoptic coupler sensor and a measurement method |
Jan. 13, 2004 |
| 6630658 |
Fiber laser pressure sensor |
Oct. 7, 2003 |
| 6621948 |
Apparatus and method for differential output optical fiber displacement sensing |
Sep. 16, 2003 |
| 6600149 |
Fiber grating environmental sensing system |
Jul. 29, 2003 |
| 6591025 |
Optical sensing system |
Jul. 8, 2003 |
| 6586722 |
Strain sensor with optical fibre Bragg gratings |
Jul. 1, 2003 |
| 6586723 |
Sensor cable |
Jul. 1, 2003 |
| 6563107 |
Topological and motion measuring tool |
May. 13, 2003 |
| 6555807 |
Sensing strain in hydrocarbon wells |
Apr. 29, 2003 |
| 6525307 |
Integrated optical interrogation of micro-structures |
Feb. 25, 2003 |
| 6522797 |
Seismic optical acoustic recursive sensor system |
Feb. 18, 2003 |
| 6501067 |
Isolation pad for protecting sensing devices on the outside of a conduit |
Dec. 31, 2002 |
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