電子参照波を用いた合成走査超音波ホログラフィ
1974 年 43 巻 5 号 p. 468-474
詳細
1974 年 43 巻 5 号 p. 468-474
In scanned-type holographies, anamorphic holograms are recorded due to the relative movements of the source, object and receiver. In this paper a technique to reconstruct images from such anamorphic holograms is proposed together with a theoretical analysis of the technique.
An ultrasonic holography system with a one-dimensional receiver array is considered, where the holograms are constructed by a synthesis of the receiver-scanning and the source-scanning and the reference wave is simulated electrically. It is shown from the theoretical analysis that these holograms are intrinsically anamorphic. An optical processing using a cylindrical lens may be adopted to reconstruct correct images.
An experiment using 1 MHz ultrasonic wave is proposed to examine the results of the theoretical discussion.
