TERAHERTZ WAVE IMAGING DEVICE

PROBLEM TO BE SOLVED: To provide a terahertz wave imaging device that can obtain an image of a subject easily with a simple structure.SOLUTION: A signal with a terahertz band containing a plurality of frequency components with frequency intervals f1 is generated in a first com generator 11. The terahertz waves with the frequencies are guided selectively to first to n-th transmission antennas 13a to 13n. The terahertz waves with the frequencies are delivered to different portions of a subject 100. The terahertz wave is received by a reception antenna 14. A signal with a terahertz band containing a plurality of frequency components with frequency intervals f2, which is a little different from the frequency intervals f1, is generated in a second com generator 16. The signal is mixed with a reception signal with a terahertz band in mixing means 15a to be converted into a signal with a low-frequency band. Image processing means 18 having received the resulting signal generates an image of the subject 100 from the relation between sensing information corresponding to each frequency component (for example, signal intensity in which the transmission intensity is reflected) and the sensed portion of the subject 100.SELECTED DRAWING: Figure 1 【課題】簡素な構造で簡便に被写体のイメージ像を取得できるテラヘルツ波イメージング装置を提供する。【解決手段】周波数間隔ｆ１である複数の周波数成分を含むテラヘルツ帯の信号を第１コム発生器１１で発生させ、各周波数のテラヘルツ波を選択的に第１〜第ｎ送信アンテナ１３ａ〜１３ｎへ導き、各周波数のテラヘルツ波を被写体１００の異なる部位へ照射し、受信アンテナ１４で受信し、周波数間隔ｆ１とは僅かに異なる周波数間隔ｆ２である複数の周波数成分を含むテラヘルツ帯の信号を第２コム発生器１６で発生させ、混合手段１５ａでテラヘルツ帯の受信信号と混合させて低周波数帯の信号に変換し、これを受けた画像処理手段１８が、各周波数成分である検知情報（例えば、透過強度が反映される信号強度）と、被写体１００の検知部位との対応関係から、被写体１００のイメージ像を生成する。【選択図】図１