| 摘要 |
PURPOSE:To eliminate the disturbance of visual recognition by reflected light easily at a low cost by providing a transparent plate, sheet or the like having multiple continuous triangle-shaped wedge surfaces directly on or spacially from a meter surface of an automobile etc. and conducting reflected light to the outside of the visual field. CONSTITUTION:In order to prevent the meters of an automobile etc., shown window cases, photographs, etc. from being made difficult to see by the reflected light of external light, multiple triangle-shaped wedge prisms 5A are formed on one surface of a transparent plastic plate (out-of-visual-field removing plate for surface reflection) 5 based on such geometric-optical design for the angle theta of inclination of slopes 5a by which feflected light is conducted to the outside of the visual field. The other surface of the plate 5 is made like A, not plain, and the angle theta may not be the same over the entire surface of the plate 5. Equally good results are obtained by directly sticking the plate, sheet or the like formed in this way, to the meters etc. or installing spacially from them. In this way, the disturbance of the visual recognition by the reflected light is prevented without occupying a large space on the surface of the displaying object. |
