Resources Contact Us Home
Acoustic lens for use in acoustic microscope

Image Number 13 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
Timing controller capable of removing surge signal and display apparatus including the same
Spectral sensor for checking documents of value
System and method for creating, managing and trading hedge portfolios
Register files for a digital signal processor operating in an interleaved multi-threaded environment
Method for generating codewords
Pattern forming method using developer containing organic solvent and rinsing solution for use in the pattern forming method
Computer system and volume migration control method using the same
  Randomly Featured Patents
Bathroom caddy
Highly flexible, foldable drill for uniform depth seed deposit
Niti-type medical guide wire and method of producing the same
Kit for teaching the composition of blood
Self-switching connector for electronic systems
Beam deflection system and color tube
Method of processing image information based on object model
Pivotal mount for a radome
Method of coupling a device to a mating part
Activated kaolin powder compound for mixing with cement and method of preparing the same