Patent ID: 8378703

Claim:
A container for containing at least a part of a device under test to be measured by an electromagnetic wave measurement device, comprising: a gap portion that has, internally disposed therein, at least a part of the device under test; and an enclosure portion that comprises a first curved surface portion and a second curved surface portion, and the gap portion is positioned between the first curved surface portion and the second curved surface portion, thereby enclosing the gap portion, wherein: the refractive index n 2 of the enclosure portion is larger than the refractive index n 1 of the device under test; both the first curved surface and the second curved surface are convex surfaces; and the electromagnetic wave measurement device outputs an electromagnetic wave at a frequency equal to or more than 0.01 teraherz [THz] and equal to or less than 100 teraherz [THx] toward the device under test, the container is positioned such that an optical axis of the first curved surface portion intersects, at an angle of more than 0 degree and less than 90 degree, with the traveling direction of the electromagnetic wave, which is output from the electromagnetic wave measurement device toward the device under test, and before the electromagnetic wave is incident on the first curved surface portion.