| 摘要 |
PURPOSE:To make the internal part transparent by providing a reflecting member having transparency from the outside and radio wave shield effect and reflecting the radio wave form a measurement object to a radio wave absorbing body. CONSTITUTION:A metallic mesh 12 is opposed to the oscillating source of a radio wave 14 obliquely and installed at an angle so that the radio wave 14 reflected in the metallic mesh 12 is absorbed to the radio wave absorbing body 13. The pitch of the metallic mesh 12 is constituted to have a required and sufficient shield effect and sufficient flatness as the radio wave reflecting face at a measured frequency band. Since the open hole rate of the metallic mesh 12 has 50% or over, the inside of the transparent window 10 of the radio dark room 8 is made visible. The external radio wave is reflected by the metallic mesh 12 and gives no effect onto the measurement. Moreover, the radio wave 14 generated from the inside of the radio wave dark room 8 is reflected in the metallic mesh 12 and absorbed by the radio wave absorbing body 13. Thus, the inside is made visible during the measurement. |
