Resources Contact Us Home
Ultrasonic transducer

Image Number 10 for United States Patent #4881212.

This invention is basically, an ultrasonic transducer that can be configured with good reproducibility, that includes an acoustic impedance matching member that gradually changes the acoustic impedance, and which is characterized byAn acoustic impedance matching member(2) configured with multiple unit layers (21, 22, 23, . . . 2n), each layer being thinner than a quarter-wavelength of an ultrasonic wave, andeach unit layer having a laiminated structure make up of heavy metal(52) and plastic(51) layers with a thickness ratio set between them to change gradually from the unit layer close to the ultrasonic oscillator to the unit layer close to the subject.

  Recently Added Patents
Switchable solvents and methods of use thereof
Pressure-applying member, fixing device, and image forming apparatus
Modular storage system
Frame timing synchronization in a geostationary satellite system
Alleviation of laser-induced damage in optical materials by suppression of transient color centers formation and control of phonon population
Methods for testing OData services
Data unit receiver and sender control method
  Randomly Featured Patents
Recess contour gauge
Semiconductor devices having a metal-insulator-metal capacitor and methods of forming the same
Memory based on a digital trie structure
Stress test apparatus and method for semiconductor memory device
Mechanical music box
Vibration actuator
Projection electron beam lithography apparatus and method employing an estimator
Method for cleaning aluminum at low temperatures
Strapping machine weld motor control system
Direct current homopolar machine