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
Method and system for selecting a target with respect to a behavior in a population of communicating entities
Surface modification
Semiconductor apparatus
Virtual multi-cluster clouds
Detecting the type of NAT firewall using messages
Train car for proppant containers
  Randomly Featured Patents
3-D readout-electronics packaging for high-bandwidth massively paralleled imager
Remote control for navigating through content in an organized and categorized fashion
Multilayer interconnection substrate
Apparatus and method for scanning laser microscopy
Boron-containing small molecules
Construction method for girder in bridge, crane for pulling up girder, vehicle for carring girder, and girder used for the same
Adjustable type hand rivet nut tool with quick-change mandrel
Clamping device for fixing a wheel rim of a vehicle wheel to a shaft of a balancing machine
Polymerizable liquid crystal composition
Light beam condensing apparatus and method of driving optical recording medium by applying the apparatus