Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Polishing composition
Method and device for managing subscriber connection
Polymorphic forms of 3-(1-{3-[5-(1-methyl-piperidin-4-ylmethoxy)-pyrimidin-2-yl]-benzyl}-6-oxo- -1,6-dihydro-pyridazin-3-yl)-benzonitrile hydrochloride salt and processes of manufacturing t
Wireless updating of hearing devices
Network based JIT on a priori knowledge of a set of disparate clients
Error detection and recovery tool for logical volume management in a data storage system
Method, system, and computer program product for scoring theoretical peptides
  Randomly Featured Patents
Wire binder
Method and apparatus for slurry temperature control in a polishing process
Vertical bale elevator
Reactive ride simulator apparatus and method
Antibody and immunoassays for determining the presence of .DELTA..sup.9-Tetrahydrocannabinol
Method and apparatus for providing broadband signals to a portable user device
Systems and methods for secure transaction management and electronic rights protection
Volume mechanical transducer for medical diagnostic ultrasound
Regeneration control system for a diesel engine exhaust particulate filter
Storage system with data prefetch function