Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sensor for measuring a vibrating surface obscured from view










Image Number 5 for United States Patent #7564567.

Described are a sensor and a method for measuring a vibration of a surface obscured from view. The sensor includes a narrowband source of a terahertz beam, a beamsplitter, a beam combiner and a terahertz detector. The beamsplitter splits the terahertz beam into a sample beam for irradiating the surface and a reference beam. The beam combiner combines the sample beam scattered from the surface and the reference beam. The terahertz detector generates an electrical signal based on a modulation of the power of the combined beams due to the vibrating surface. The electrical signal indicates a characteristic of the surface vibration. Homodyne or heterodyne detection can be utilized. Advantageously, the sensor can see surfaces that are covered, concealed or otherwise obscured behind optically opaque materials, including plastic, cloth, foam, paper and other materials. Thus the sensor has a wide variety of applications where conventional vibrometers are not practical.








 
 
  Recently Added Patents
Method for isomerisation of hop alpha-acids using heterogeneous alkaline earth metal based catalysts
Electronic device
Method of making a low-Rdson vertical power MOSFET device
Using rule induction to identify emerging trends in unstructured text streams
Generating wiki pages from content and transformation objects
Baseball themed hand clap maraca
Puncture resistant fabric
  Randomly Featured Patents
Stabilizer for pressure regulator
Oil separating device for crankcase gases of an internal combustion engine
USB memory device
Video recording medium, video recording apparatus and video retrieving method
Magnetic resonance imaging apparatus and high-frequency coil unit used in the same
6-O-substituted benzoxazole and benzothiazole compounds and methods of inhibiting CSF-1R signaling
Flip apparatus and electronic device using the same
Printing of enhanced images
Combi-sim card framework of electronic purse combining wireless transceiver of mobile device
Compositions based on a synergistic mixture of at least one VDR ligand and a retinoid