| 摘要 |
PURPOSE:To prevent production of interference fringe by interposing an optic element which is varied in transmittancy in accordance with applied voltage between a transparent plate disposed in the most front position of a mirror and a mirror face disposed behind the plate and providing a reflection preventing film at the back of the transparent plate. CONSTITUTION:A surface glass 11 that is a transparent plate is disposed in the most front position inside the casing 17 of a glare preventing mirror. A mirror face 13 having a high reflection ratio and having aluminum or the like deposited on the surface of a glass panel 12, for example, is formed at the back of said glass 11. A liquid crystal element 14 or an optic film element which is varied in transmittancy in accordance with applied voltage is sandwiched between the surface glass 11 and the mirror face 13. And reflection preventing films 15 and 16 are formed on both the front and the back face of the surface glass 11. The liquid crystal element 14 is made up in such a manner that a TN type liquid crystal 14a is sandwiched by light distributing films 14b that are light deflection sheets which will be in the parallel Nicol state and transparent electrodes 14c are arranged on the external sides of the films 14b. |
