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
Cavernous nerve stimulation via unidirectional propagation of action potentials
Systems and methods for vehicle cruise control
Air filter
Method of producing probabilities of being a template shape
Improving alignment target contrast in a lithographic double patterning process
Electrode structure and its manufacturing method, and semiconductor module
Hypallergenic mosaic antigens and methods of making same
  Randomly Featured Patents
Combined swivel base and pull-out drawer for a telephone or similar article
Color data conversion apparatus and method using gamut boundary descriptors
Electrochromic pane
Method of forming evacuated insulation panels
Method for preparing glucoronyl-glucosamino-glycan sulphates exhibiting antilipasaemic activity
Bacillus strain for increased protein production
Three-dimensional matrix structure for defining a coaxial transmission line channel
Swivel barstool
Image-forming apparatus having an openable sheet guide
Methods of forming integrated circuit packages, and methods of assembling integrated circuit packages