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
Image browsing device, computer control method and information recording medium
Methods and apparatus for providing video on demand and network PVR functions using IP streaming
Interaction analysis and prioritization of mobile content
System and method of improving audio signals for the hearing impaired
Gemstone
Oxidative coupling of hydrocarbons as heat source
Organic electroluminescent element
  Randomly Featured Patents
Multi-function operating device
Customized advertising for online slideshow
Apparatus and method for indicating condition of a rotating body
Oral liquid mucoadhesive compositions
Synchronization method and system, and decoder
New Guinea Impatiens plant named `Applause White`
Compliant bistable micromechanism
Method of transmitting scheduling reference signal
Inspection and testing device
Disk drive with vibration synchronizing rib