<ul><li>Researchers at China's Hunan University have developed a bifocal lens with adjustable focal points using liquid crystal materials.</li><li>The lens features a bilayer structure that responds differently to an applied electric field, splitting incoming light into oppositely polarized beams.</li><li>The lens demonstrated excellent performance in polarization imaging and edge imaging experiments.</li><li>Further research is underway to reduce manufacturing costs and explore potential applications in optical systems.</li></ul>

Liquid-crystal bifocal lens excels at polarization and edge imaging

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