CROSS REFERENCE TO RELATED APPLICATIONS

This application is the U.S. National Phase under 35 U.S.C. § 371 of International Application No. PCT/JP2018/027405, filed on Jul. 20, 2018, the entire contents is hereby incorporated by reference.

TECHNICAL FIELD

The present invention relates to terahertz wave detection equipment, a terahertz wave detection method, and a terahertz wave detection system.

BACKGROUND ART

It has been known that a plurality of types of VCO gas shows a characteristic frequency absorption spectrum in a region of a terahertz wave (0.1 THz to 10 THz, hereinafter referred to as “THz wave”). It has been also known that the THz wave has a longer wavelength than infrared light, and thus is less susceptible to influence of aerosol. Non-Patent Literature 1 discloses investigation for applying a THz wave to analysis of VCO gas by using property of the THz wave.

CITATION LIST

Patent Literature

Non-Patent Literature: Gapless THz Comb Spectroscopy (The Review of Laser Engineering, Vol. 42, No. 9, pp. 1 to 6, September, 2014)

SUMMARY OF INVENTION

Technical Problem

Non-Patent Literature 1 mentions generation of a terahertz wave without a gap between spectrums, however, does not teach display of a result which is obtained by the analysis using the THz wave. Since a terahertz wave has a longer wavelength than light, resolution of an image of the received terahertz wave cannot be the same level as that of a visible light image. Accordingly, improvement is necessary for providing a result of the analysis using the THz wave as an image.

The present invention has been made in view of the circumstances described above, and an object of the present invention is to provide display technique capable of making it easy to see an analysis result using a terahertz wave.

Solution to Problem

In order to solve the problems described above, the present invention provides terahertz wave detection equipment comprising: a terahertz wave transceiver including a transmitter configured to transmit a terahertz wave, and a receiver configured to receive a reflected terahertz wave reflected by a background reflected object which exists behind an object to be analyzed; a display; and an information processing apparatus connected to each of the terahertz wave transceiver and the display, wherein the transmitter irradiates a terahertz wave based on a transmission signal including a specific frequency toward a two-dimensional area including the object to be analyzed, and the information processing apparatus includes: an analysis unit configured to analyze concentration of the object to be analyzed based on the reflected terahertz wave; and a visualization unit configured to generate a composite image in which a concentration image of the object to be analyzed is combined with a background image of the background reflected object based on an analysis result of the analysis unit, and display the composite image on the display.

Advantageous Effects of Invention

According to the present invention, it is possible to provide display technique capable of making it easy to see an analysis result using a terahertz wave. The objects, configurations, and effects other than those described above will be clarified by explanation of the embodiments below.

