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
Engineered enzymes with methionine-gamma-lyase enzymes and pharmacological preparations thereof
High brightness laser diode module
System for purifying air through germicidal irradiation and method of manufacture
Image forming apparatus, image forming method, and computer readable medium for identifying target-recording element using detection pattern
Patient interface
Particulate filter with hydrogen sulphide block function
Method for automatically estimating inertia in a mechanical system
  Randomly Featured Patents
Strained semiconductor device and method of making same
Semiconductor memory device and method of performing a memory operation
Double-balanced modulator and quadri-phase shift keying device
Acoustic catastrophic event detection and data capture and retrieval system for aircraft
Lost motion door locking mechanism
Weldless gratings or grids for bridge decks
Resist coating apparatus
Protective cover for eyeglasses
Methods for wiping a metal contaminated surface with a water soluble fabric
Electrical control system and driver