Polarization-insensitive liquid crystal microlens array with dual focal modes

Che Ju Hsu, Chen Hau Liao, Bao Long Chen, Shang Yi Chih, Chi Yen Huang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We demonstrate a liquid crystal (LC) microlens array (MLA) fabricated by LCs possessing negative dielectric anisotropy, in conjunction with a cell with a three-electrode structure. The presented LC MLA is polarization-insensitive and can be operated in both concave and convex modes. The shortest focal length of the LC MLA is -2.54 and 2.22 mm in concave and convex mode, respectively. Disclination lines that are usually observed in conventional hole-patterned LC lens can also be avoided because of the vertical alignment treatment of LCs.

Original languageEnglish
Pages (from-to)25925-25930
Number of pages6
JournalOptics Express
Issue number21
Publication statusPublished - 2014 Oct 20

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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