Acoustic microscope for analyzing an object in depth having aspherical lenses
US4641530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An acoustic microscope for analyzing an object in depth has aspherical lenses. It comprises two identical bars arranged in the extension of one another and provided on their facing ends with a cavity, said cavities defining a pseudo-hyperbolic focussing lens and objective lens, whereby the foci of said two lenses coincide and the lenses are linked by a mercury or gallium drop in which can be immersed the object to be analyzed. The bars are provided at their other ends with a piezoelectric transducer. These transducers are able to produce ultrasonics focussed within the object by the focussing lens and are able to detect the ultrasonics reflected or transmitted by the object via the objective lens. These are also means for analyzing ultrasonics reflected or transmitted by the object and means for displacing the object in the focal plane of the two lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.