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
Method and system for blocking hazardous information
Hydrostatic pad pressure modulation in a simultaneous double side wafer grinder
Sabatier process and apparatus for controlling exothermic reaction
Electronic package with fluid flow barriers
High-resolution, active reflector radio frequency ranging system
Interface circuit
Storage apparatus and storage apparatus management method performing data I/O processing using a plurality of microprocessors
  Randomly Featured Patents
Memory control apparatus, memory control method and program
Stowable telescoping seat belt mechanism
Method of removing heart valve stenosis
Thermoplastic resin composition and method for preparing the same
Recombinant vector containing infectious, viral genome sequences greater than 100 kb, method for producing same and use for the mutagenesis of the viral sequences
Bag-like folding carton
Reflective projection screen with angled sidewalls
Protective netting comprising connected crossed cables, for example, snow or ground netting
Livestock feed composition and its production method
Image photographing apparatus and assembly method thereof