Electrically tunable microlens arrays based on polarization-independent optical phase of nano liquid crystal droplets dispersed in polymer matrix

Ji Hoon Yu, Hung Shan Chen, Po Ju Chen, Ki Hoon Song, Seong Cheol Noh, Jae Myeong Lee, Hongwen Ren, Yi-Hsin Lin, Seung Hee Lee

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Electrically tunable focusing microlens arrays based on polarization independent optical phase of nano liquid crystal droplets dispersed in polymer matrix are demonstrated. Such an optical medium is optically isotropic which is so-called an optically isotropic liquid crystals (OILC). We not only discuss the optical theory of OILC, but also demonstrate polarization independent optical phase modulation based on the OILC. The experimental results and analytical discussion show that the optical phase of OILC microlens arrays results from mainly orientational birefringence which is much larger than the electric-field-induced birefringence (or Kerr effect). The response time of OILC microlens arrays is fast∼5.3ms and the tunable focal length ranges from 3.4 mm to 3.8 mm. The potential applications are light field imaging systems, 3D integrating imaging systems and devices for augment reality.

Original languageEnglish
Pages (from-to)17337-17344
Number of pages8
JournalOptics Express
Volume23
Issue number13
DOIs
StatePublished - 1 Jan 2015

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