| 摘要 |
<p>An electronic aperture (10) comprises first and second polarizers (14, 16) and a liquid crystal layer (12) disposed between the first and second polarizers (14, 16). The liquid crystal layer (12) comprises a plurality of liquid crystals having an angular orientation that varies as a function of position. In one exemplary embodiment, the angular orientation of the liquid crystals varies as a function of distance from an optical axis.</p> |
