US Patent No: 5,212,379

Number of patents in Portfolio can not be more than 2000

Fiber optical monitor for detecting motion based on changes in speckle patterns

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Abstract

A motion monitor using coherent or partially coherent light passing through an optical fiber which is in contact or close to an object whose motion is to be monitored. An optical speckle pattern is formed near the output of the optical fiber which pattern changes as the fiber moves in response to the motion of the object being monitored. An optical detector monitors all or a part of the speckle pattern and electronically processes the optical detector's electrical output signals to derive information on the status of the object being monitored.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ALAMED CORPORATIONPORTOLA VALLEY, CA3

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nafarrate, Antonio B San Jose, CA 2 57
Rawson, Eric G Saratoga, CA 23 669

Cited Art

Patent Info (Count) # Cites Year
 
FIBER SENSYS, INC. (1)
4,297,684 Fiber optic intruder alarm system 59 1979
 
ITT INDUSTRIES, INC. (1)
4,339,661 Fibre optic transducer 12 1980
 
PHOTONETICS (1)
4,843,233 Device for detecting vibrations including a multimode optical fiber as sensitive element 32 1988

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
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5,870,362 Slider for optical disc data storage system 11 1997
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6,445,447 Near field optical certifying head for disc asperity mapping 4 1998
6,023,378 Optical data storage system with improved head lens assembly 6 1998
6,084,846 Liquid immersion lens for optical data storage 13 1998
6,688,743 Method and apparatus to determine fly height of a recording head 5 1998
6,369,900 Glide head with features on its air bearing surface for improved fly height measurement 3 1998
6,219,332 Slider for optical disc data storage system 4 1999
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6,145,551 Full-fashioned weaving process for production of a woven garment with intelligence capability 47 1998
6,381,482 Fabric or garment with integrated flexible information infrastructure 90 1999
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6,970,731 Fabric-based sensor for monitoring vital signs 28 2000
6,474,367 Full-fashioned garment in a fabric and optionally having intelligence capability 17 2000
6,315,009 Full-fashioned garment with sleeves having intelligence capability 27 2000
7,299,964 Method and apparatus to create electrical junctions for information routing in textile structures 1 2004
 
TARILIAN LASER TECHNOLOGIES, LIMITED (6)
8,360,985 Optical vital sign detection method and measurement device 0 2007
8,343,063 Optical vital sign detection method and measurement device 0 2007
7,822,299 Optical power modulation vital sign detection method and measurement device 4 2007
7,463,796 Waveguide and optical motion sensor using optical power modulation 4 2007
7,657,135 Waveguide and optical motion sensor using optical power modulation 4 2008
8,111,953 Optical power modulation vital sign detection method and measurement device 2 2010
 
NEUDORFER DATA GROUP LLC (2)
6,498,652 Fiber optic monitor using interferometry for detecting vital signs of a patient 28 2000
6,816,266 Fiber optic interferometric vital sign monitor for use in magnetic resonance imaging, confined care facilities and in-hospital 52 2002
 
VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY (2)
7,189,958 System, device, and method for detecting perturbations via a fiber optic sensor 1 2003
7,196,317 System, device, and method for detecting perturbations 3 2005
 
KINDEN CORPORATION (1)
8,206,324 Method for monitoring living body activities, and optical fiber type flat shaped body sensor, garment styled optical fiber type flat shaped body sensor and human body fitted optical fiber type flat shaped body sensor used for the same 0 2008
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY (1)
5,841,130 System for monitoring strain in concrete structures 0 1997