公开(公告)号：US5991078A

公开(公告)日：1999-11-23

申请号：US872498

申请日：1997-06-10

申请人： Shoko Yoshitake ,  Mitsuo Okabe

发明人： Shoko Yoshitake ,  Mitsuo Okabe

IPC分类号： G02B5/18

CPC分类号： G02B5/1857

摘要： A display medium employing a diffraction grating to define and represent a display pattern by the contour thereof, which enables the display pattern to move smoothly as the visual point moves and which allows the display pattern to move in various ways and is easy to produce. A display pattern ("DNP"), e.g., a character, an image, etc., is defined and displayed by the outer or inner contour of a diffraction grating (A or B) composed of a group of smooth curves, or a diffraction grating composed of a group of partial straight-line diffraction gratings that form polygonal lines linearly approximating smooth curves. Accordingly, as the visual point is moved relative to the display medium, a position that looks bright by diffraction moves smoothly and variously. If the display medium is illuminated by white light, the region that looks bright becomes a rainbow-colored region. Accordingly, the display pattern becomes not only readily recognizable but also interesting to view. Thus, display and design effects become extremely excellent. By varying the configuration of curves, the motion of the region that looks bright can be changed variously. Also disclosed is a method of producing a diffraction grating assembly for the display medium.

摘要翻译： 使用衍射光栅的显示介质通过其轮廓来限定和表示显示图案，这使得显示图案能够随着视点移动而平滑地移动，并且允许显示图案以各种方式移动并且易于生产。 通过由一组平滑曲线组成的衍射光栅（A或B）的外部或外部轮廓来定义和显示显示图案（“DNP”），例如字符，图像等，或衍射 由一组部分直线衍射光栅组成的光栅，其形成线性近似平滑曲线的多边形线。 因此，随着视点相对于显示介质移动，通过衍射看起来明亮的位置平滑地且各种地移动。 如果显示介质被白光照亮，则看起来明亮的区域成为彩虹色区域。 因此，显示图案变得不仅容易识别，而且也是有趣的。 因此，显示和设计效果变得非常好。 通过改变曲线的配置，可以不同地改变看起来很亮的区域的运动。 还公开了一种用于显示介质的衍射光栅组件的制造方法。