| 摘要 |
PURPOSE:To realize the multiplicity of signal, by giving displacement to the gap between two sheets of reflection preventing films from the set state by the change of pressure of the enclosed liquid caused by the motion of a lever and thus varying the wavelength of the light that passes through the reflection preventing films. CONSTITUTION:The one/off signal of light or the continuous replacement signal of light is extracted to the rotation of a lever 1 from position alpha to beta or to the angular displacement. When the level 1 has displacement from position alpha to beta, a rotary shaft 2 rotates and then nut 5 moves by the screw thread. As the nut part 5 and a sealed container 6 are fixed to an attachment plate 4, the tip of the shaft 2 pushes the rear wall face 61 of the container 6 when the shaft 2 is rotated. As a result, the pressure of a transparent liquid 62 increases and accordingly the liquid 62 pushes the wall face of a reflection preventing film 64 as shown by an arrow C. Thus the space (d) between two sheets of film 64 varies to change the wavelength of the passing light. |
