| 摘要 |
FIELD: optics. ^ SUBSTANCE: component produces a first visible configuration when observed through a polarizer oriented in a first orientation, and a second configuration, separate from the first, visible when observed through the polarizer oriented in a second orientation. The optical component comprises a stamped film for forming at least two diffraction gratings having different orientations, further including a structure having a random and chaotic nature overlaid on the two perpendicularly oriented gratings. Each of said gratings has a period of less than 550 nm and a modulation between 0.25 and 0.5 relative to a reference plane. ^ EFFECT: enhanced tolerance of the optical component to the polarization effect observation conditions. ^ 18 cl, 17 dwg |
