Planar-structure focusing lens for acoustic microscope
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概要
- 論文の詳細を見る
A planar-structure acoustic focusing lens proposed by the authors is applied successfully to the scanning acoustic microscope as a substitute for the conventional concave lens. The lens is composed of a number of concentric annular grooves of uniform depth formed on the radiation plane according to the theory of a Fresnel zone plate. Because of the simple configuration with no spherical surface, the planar lens operating at a very high frequency can be fabricated easily using the conventional photolithographic technique. Good focusing capability of the lenses fabricated for operation at 100 MHz and 200 MHz has been demonstrated through the experimental and theoretical examinations. Images of satisfactory quality have been obtained using the scanning acoustic microscope equipped with the planar lenses.
- 社団法人日本音響学会の論文
著者
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YAMADA Ken
Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku Unive
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Shimizu Hiroshi
Department Of Animal Science Faculty Of Agriculture Hokkaido University
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Yamada Ken
Department Of Electrical Communications Faculty Of Engineering Tohoku University
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