PROBLEM TO BE SOLVED: To provide an imaging device capable of increasing a component of lost high frequency in any waves conducted from inside of a measurement target to improve space resolution activity and measurement precision.SOLUTION: An imaging device comprises a nonlinear reception processing part executes at least one of the following process on wave conducted from inside of a measurement target: (i) a process where the conducted wave is subjected to nonlinear processing with a nonlinear device 11 on a conducting pathway and received by a transducer 10 to generate reception signal (ii) a process where the conducted wave is received by the transducer 10 to generate analog reception signal and then the reception signal is subjected to analog nonlinear processing and (iii) a process where the conducted wave is received by the transducer 10 to generate analog reception signal and then a digital reception signal generated by digital sampling of the reception signal is subjected to digital nonlinear processing. The imaging device also comprises an image signal generating part 31 generating an image signal showing an image of measurement target based on reception signal obtained by the nonlinear reception processing part.COPYRIGHT: (C)2016,JPO&INPIT【課題】計測対象内から伝搬して来る任意波動において失われた高周波数の成分を増強して、空間分解能や計測精度を向上させるイメージング装置を提供する。【解決手段】イメージング装置は、計測対象内から伝搬して来る波動に対し、(i)伝搬経路において非線形デバイス11を用いて非線形処理を施した上でトランスデューサ10によって受信して受信信号を生成する処理、(ii)トランスデューサ10によって受信してアナログの受信信号を生成し、受信信号にアナログの非線形処理を施す処理、及び、(iii)トランスデューサ10によって受信してアナログの受信信号を生成し、受信信号をデジタルサンプリングして得られるデジタルの受信信号にデジタルの非線形処理を施す処理の内の少なくとも1つを施す非線形受信処理部と、非線形受信処理部によって得られる受信信号に基づいて、計測対象の画像を表す画像信号を生成する画像信号生成部31とを備える。【選択図】図1
