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Class Information
Number: 250/227.18
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) > Causing light spectral frequency/wavelength change
Description: Subject matter in which the condition sensed causes a change in frequency/wavelength of the light transmitted to the photodetector by the light conductor.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7439485 |
Multimode optical transmission apparatus and multimode optical transmission system |
Oct. 21, 2008 |
| 7437028 |
Multi-layered sensor |
Oct. 14, 2008 |
| 7426322 |
Plasmon photocatalysis |
Sep. 16, 2008 |
| 7411176 |
Method and apparatus for examining corrosion of tendon embedded in concrete |
Aug. 12, 2008 |
| 7406217 |
Plasmon photocatalysis |
Jul. 29, 2008 |
| 7385177 |
Light guide rotation rate detector with coupled optical resonators |
Jun. 10, 2008 |
| 7379631 |
Multi-core distributed temperature sensing fiber |
May. 27, 2008 |
| 7373056 |
High-voltage component with optical fiber and method for producing it |
May. 13, 2008 |
| 7359585 |
Plasmon photocatalysis |
Apr. 15, 2008 |
| 7349591 |
Pressure compensated optical accelerometer, optical inclinometer and seismic sensor system |
Mar. 25, 2008 |
| 7326917 |
Wear monitor for turbo-machine |
Feb. 5, 2008 |
| 7315667 |
Propagating light to be sensed |
Jan. 1, 2008 |
| 7312435 |
Determination of a physical state of an optical device |
Dec. 25, 2007 |
| 7295723 |
Plasmon photocatalysis |
Nov. 13, 2007 |
| 7281428 |
Diagnostic system for monitoring structural health conditions |
Oct. 16, 2007 |
| 7243543 |
Highly sensitive accelerometer |
Jul. 17, 2007 |
| 7228017 |
Fiber optic sensing device and method of making and operating the same |
Jun. 5, 2007 |
| 7197931 |
Sensors for monitoring structural health conditions |
Apr. 3, 2007 |
| 7157693 |
Optical wavelength interrogator |
Jan. 2, 2007 |
| 7154082 |
Frequency division and/or wavelength division multiplexed recursive fiber optic telemetry scheme for an optical sensor array |
Dec. 26, 2006 |
| 7155077 |
Optical fiber based surface sensing system that enables spectral multiplexing |
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 |
| 7138621 |
Optical fiber sensors based on pressure-induced temporal periodic variations in refractive index |
Nov. 21, 2006 |
| 7122783 |
Seismic activity monitor based on optical fiber Bragg gratings |
Oct. 17, 2006 |
| 7123795 |
Methods for the alignment and calibration of the spectral responses of optical filters |
Oct. 17, 2006 |
| 7119324 |
Highly stable broadband light source and suitable stabilization method therefor |
Oct. 10, 2006 |
| 7109471 |
Optical wavelength determination using multiple measurable features |
Sep. 19, 2006 |
| 7103276 |
Optical band scanning monitor system and method |
Sep. 5, 2006 |
| 7088491 |
Pulse generating apparatus and method |
Aug. 8, 2006 |
| 7076122 |
Patch-type extrinsic Fabry-Perot interferometric fiber optic sensor and real-time structural vibration monitoring method using the same |
Jul. 11, 2006 |
| 7064315 |
Method and device for compensating for interfering variables in an optical sensor |
Jun. 20, 2006 |
| 7060967 |
Optical wavelength interrogator |
Jun. 13, 2006 |
| 7054521 |
Architecture for large optical fiber array using standard 1.times.2 couplers |
May. 30, 2006 |
| 7041960 |
Bond separation inspection method using compressive thermal strain in optical sensor part |
May. 9, 2006 |
| 7030366 |
Micro piezo-optic composite transducers and fabrication methods |
Apr. 18, 2006 |
| 7031560 |
Resonant sensor with optical excitation and monitoring device using this sensor |
Apr. 18, 2006 |
| 7013729 |
Highly sensitive accelerometer |
Mar. 21, 2006 |
| 7008103 |
Method and apparatus for temperature sensing utilizing optical fiber |
Mar. 7, 2006 |
| 7005630 |
Energy-modulating fiber grating sensor |
Feb. 28, 2006 |
| 6972400 |
Multi-mode vibration sensor laser |
Dec. 6, 2005 |
| 6969842 |
Dispersion discrimination for wideband optical signals |
Nov. 29, 2005 |
| 6955085 |
Optical accelerometer or displacement device using a flexure system |
Oct. 18, 2005 |
| 6946645 |
Measuring system with sweeping comb filter and multiplexer |
Sep. 20, 2005 |
| 6944360 |
Remote temperature/strain fiber optic sensing system with embedded sensor |
Sep. 13, 2005 |
| 6933491 |
Remotely deployed optical fiber circulator |
Aug. 23, 2005 |
| 6910803 |
Method and apparatus for temperature sensing utilizing Brillouin scattering in polarization maintaining optical fiber |
Jun. 28, 2005 |
| 6901101 |
Optical sensor for measuring physical and material properties |
May. 31, 2005 |
| 6899849 |
Integrated sensor |
May. 31, 2005 |
| 6897434 |
All-fiber photon-pair source for quantum communications |
May. 24, 2005 |
| 6898339 |
Multiple mode pre-loadable fiber optic pressure and temperature sensor |
May. 24, 2005 |
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