Resources Contact Us Home
Acoustic lens for use in acoustic microscope

Image Number 16 for United States Patent #4881618.

An acoustic lens for use in an acoustic microscope including a solid state medium for propagating an acoustic wave having a wavelength .lambda. and having opposed end surfaces, an electric-acoustic transducer applied on one end surface of the solid state medium and having a radius a, and a spherical lens portion formed in the other end surface of the solid state medium and having an aperture of a radius w. The length l and the aperture radius w are normalized by the transducer radius a such that Z=l.lambda./a.sup.2 and W=w/a. Values of Z and W are selected from such a region in a first quadrant of the Z-W coordinate system that desired power and/or phase are obtained. The region neighboring the point Z=1 and W=1 is excluded.

  Recently Added Patents
Pharmaceutical composition for treating CAPRIN-1 expressing cancer
Process for preparing soybean curd using micronized solution of soybean curd
Active metal fuel cells
Communicating channel state information using predictive vector quantization
Nanoparticles in a flash memory using chaperonin proteins
Base station apparatus and communication control method
Method for indicating the process of leaving a parking space
  Randomly Featured Patents
Method and apparatus for efficient bandwidth utilization for subscriber unit initialization and synchronization in a time-synchronized communication system
Intake apparatus and methods of internal combustion engine
Voice-coil motor and positioning device or servo-track writer including a voice-coil motor
Adhesion of brass to rubber
Ultimate ring toss game
Carbon fabrics sequentially resin coated with (1) a metal-containing composition and (2) a boron-containing composition are laminated and carbonized
Digital circuit for correcting phase shift of digital signal
Animal leash
Dual acting piston pump having reduced back flow between strokes