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
Apparatus and method to simulate a power trip to a disk drive
Process for preparation of Efavirenz
Information processing apparatus, information outputting method and computer program storage device
Selective facsimile denial
Inhibition of HRP-3 using modified oligonucleotides
Magnetic levitation motor used in lens module
Semiconductor arrangement with a solder resist layer
  Randomly Featured Patents
Holder for mounting to a surface and interchangeably displaying a sheet of material
Particle source for a reactive ion beam etching or plasma deposition installation
Sealed battery having a through-hole or hollow in a collector or collector receiving part
Automatic self test of an integrated circuit component via AC I/O loopback
Method for the manufacture of a superconducting hollow conductor
Lockable pull-out guide
Apparatus for generation of scan control signals for initialization and diagnosis of circuitry in a computer
Shaft rotation driving apparatus for machine tool
Golf club weighted attachment
Tapered trench structure and process