| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and a method for measuring the distribution of electromagnetic intensities of sub-millimeter wave beams without being affected by errors ensuing from the setup of optical constituent elements and moreover in a non-contact way.SOLUTION: Three or more collimated light reflectors are arranged in a sub-millimeter wave beam receiver, and any misalignment between a transmission system and a receiver optical system is determined on the basis of the receiving positions of collimated light beams transmitted from a collimator and reflected by the reflectors; a distribution of electromagnetic intensities of sub-millimeter wave beams received by the receiver optical system, cleared of any influence of misalignment, is determined by correction using the misalignment. |
