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
Focusing apparatus that effectively sets a focus area of an image when a focusing mode is changed
Process for the preparation of diene polymers of statistical vinylarene-diene copolymers
Washing-up bowl
Scanned image projection system employing intermediate image plane
Isothermal amplification of DNA
Flash multi-level threshold distribution scheme
System and method for investing public deposits
  Randomly Featured Patents
Switching element
Coated metal strip
Implantable textile prostheses having PTFE cold drawn yarns
Safety gate and guard for such a gate
Metallic ink composition and writing instrument containing same
Non-invasive, in vivo fluorescent imaging of the nervous system in whole living animal
Process for preparing .DELTA.9,11 and 21-chloro corticosteroids
Method of making multilayer capacitor memory device
Subscriber identification module
Toy tractor