Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Wiring board and method for manufacturing the same
Electric heating system, in particular for use as an auxiliary heating system for automobiles
Device for decelerating sheets to be placed on a stack, especially paper or cardboard sheets
Secured broadband device
Parking garage vehicle lock box
Chip package and method for forming the same
Mobile wireless device with multi-band antenna and related methods
  Randomly Featured Patents
Photoelectric converting device and image processing apparatus using the same
Organic electroluminescent display device
Enhanced surface implant and method of manufacture
Knock-down carrier for athletic equipment or the like
Center core extracting drill bit
4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene compounds
Moving picture transmission apparatus, moving picture reception apparatus, and moving picture data record medium
Adjustable motor-operated circular saw sharpener
Method and system of controlling transfer of data by updating descriptors in descriptor rings
Multi-level bus access for multiple central processing unit