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Class Information
Number: 250/227.14
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)
Description: Subject matter in which the light which photocell senses is affected by some property of the light conductor itself which is, in turn, acted upon by the condition or parameter being sensed and the photocell generates an electric signal in response thereto.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6788835 |
Multiplexable fiber-optic strain sensor system with temperature compensation capability |
Sep. 7, 2004 |
| 6788295 |
Touch pad using a non-electrical deformable pressure sensor |
Sep. 7, 2004 |
| 6787758 |
Wellbores utilizing fiber optic-based sensors and operating devices |
Sep. 7, 2004 |
| 6785432 |
Target molecules detection by waveguiding in a photonic silicon membrane |
Aug. 31, 2004 |
| 6781113 |
Fiber bragg grating strain sensor with arc configuration |
Aug. 24, 2004 |
| 6774354 |
Fiber optic pitch or roll sensor |
Aug. 10, 2004 |
| 6765644 |
Broadband optical beam steering system and method |
Jul. 20, 2004 |
| 6766071 |
Device and method for the measurement of the heat of a reaction |
Jul. 20, 2004 |
| 6763153 |
Apparatus and method for electronic RIN reduction in fiber-optic sensors utilizing filter with group delay |
Jul. 13, 2004 |
| 6756580 |
Fiber grating bond joint health monitoring system |
Jun. 29, 2004 |
| 6756579 |
Optical fiber based apparatus and sensor with enhanced signal for pressure measurements |
Jun. 29, 2004 |
| 6750463 |
Optical isolation apparatus and method |
Jun. 15, 2004 |
| 6751367 |
Multiplexable fiber-optic strain sensor system with temperature compensation capability |
Jun. 15, 2004 |
| 6748128 |
Device for changing the length of the running path of an electromagnetic wave |
Jun. 8, 2004 |
| 6744035 |
Passive, temperature compensated techniques for tunable filter calibration in bragg-grating interrogation systems |
Jun. 1, 2004 |
| 6740866 |
Fibre Bragg-grating sensor |
May. 25, 2004 |
| 6740865 |
Imaging system for luminescence assays |
May. 25, 2004 |
| 6734411 |
Method and apparatus for controlling power levels of optical signals in optical fiber interconnects |
May. 11, 2004 |
| 6728433 |
Feedback stabilization of a loss optimized switch |
Apr. 27, 2004 |
| 6728430 |
Fluid identification system |
Apr. 27, 2004 |
| 6726360 |
Intensity modulated fiber optic temperature switching immersion probe |
Apr. 27, 2004 |
| 6724319 |
Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors |
Apr. 20, 2004 |
| 6721470 |
Optical measurement device in a pressed-in conductor bar in an electrical machine |
Apr. 13, 2004 |
| 6720550 |
Sensor assembly |
Apr. 13, 2004 |
| 6713743 |
Fabry-perot resonator and system for measuring and calibrating displacement of a cantilever tip using the same in atomic force microscope |
Mar. 30, 2004 |
| 6710328 |
Fiber optic composite damage sensor |
Mar. 23, 2004 |
| 6704470 |
Optoelectronic gas sensor based on optodes |
Mar. 9, 2004 |
| 6696682 |
Optical signal active tracking using tunable FBG |
Feb. 24, 2004 |
| 6680472 |
Device for measuring of optical wavelengths |
Jan. 20, 2004 |
| 6677575 |
Object detecting device having activated light source |
Jan. 13, 2004 |
| 6677576 |
Fiberoptic coupler sensor and a measurement method |
Jan. 13, 2004 |
| 6677577 |
Waveform measuring method and apparatus |
Jan. 13, 2004 |
| 6660994 |
Optical apparatus and method for high speed measurement of temporally-resolved transient pressures |
Dec. 9, 2003 |
| 6649905 |
Accelerometer and devices using the same |
Nov. 18, 2003 |
| 6644848 |
Pipeline monitoring systems |
Nov. 11, 2003 |
| 6643436 |
Identifying fibers of fiber optic cables |
Nov. 4, 2003 |
| 6636320 |
Fiber optic tufts for flow separation detection |
Oct. 21, 2003 |
| 6636348 |
Signal break detecting circuit |
Oct. 21, 2003 |
| 6630658 |
Fiber laser pressure sensor |
Oct. 7, 2003 |
| 6621947 |
Apparatus and method for monitoring a structure using a counter-propagating signal method for locating events |
Sep. 16, 2003 |
| 6618523 |
Unbalanced fiber optic Michelson interferometer as an optical pick-off |
Sep. 9, 2003 |
| 6618124 |
Optical microphone/sensor |
Sep. 9, 2003 |
| 6610974 |
Positioning a movable reflector in an optical switch |
Aug. 26, 2003 |
| 6607486 |
Beltless fiber optic labor contraction sensing device |
Aug. 19, 2003 |
| 6606186 |
Dynamic fiber optic sensor signal processing scheme |
Aug. 12, 2003 |
| 6600149 |
Fiber grating environmental sensing system |
Jul. 29, 2003 |
| 6597822 |
Multiplexable fiber-optic strain sensor system with temperature compensation capability |
Jul. 22, 2003 |
| 6594068 |
High switching speed digital faraday rotator device and optical switches containing the same |
Jul. 15, 2003 |
| 6590665 |
Optical sensing devices |
Jul. 8, 2003 |
| 6590194 |
Multi-fiber optic 2D-array device for sensing and localizing environment perturbation using speckle image processing |
Jul. 8, 2003 |
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