| 摘要 |
PURPOSE:To prevent scattering of glass when a glass substrate is broken and double image reflection in a nonglaring state by adhering a transparent plate which has the light incidence surface slanted at a specific angle to the reflecting surface of the reflecting film to the front surface of the glass substrate positioned at an incidence side of light. CONSTITUTION:When a voltage is applied between transparent electrode films 5a and 5b formed on the internal end surfaces of transparent substrates 4a and 4b by a driving circuit 10, liquid crystal causes dynamic scattering and decreases in light transmissivity. Consequently, the quantity of light reaching the reflecting film 9 is reduced and the reflection factor becomes lower, so nonglaring operation is obtained. In this case, transparent glass 11 is adhered to the end surface of the substrate 4a at the light incidence side by water glass 12 at an angle theta. Therefore, when the transparent glass is broken, its scatter is prevented by the water glass 12. Further, when light reflected by the reflecting film 9 is viewed in the nonglaring state, light reflected by the front surface of the transparent glass 11 does not reach the eyes, so image double reflection is prevented. |
