Low-aberration liquid crystal lens with positive and negative focal length

Research output: Contribution to journalArticlepeer-review

Abstract

A low-aberration hole-patterned-electrodes (HPE) liquid crystal (LC) lens with positive and negative focal lengths is demonstrated in this Letter by using four hybrid-aligned nematic LC layers filled with dual-frequency LC materials. The diopter can be controlled from the positive lens (0 D ∼ 1.1 D) to the negative lens (0 D ∼ −1.25 D). The aberration is analyzed using the Zernike polynomial, and the wavefront optical path difference is improved from 2λ for the conventional one-layer HPE LC lens to less than 0.25λ for our proposed LC lens. The proposed LC lens does not require the use of a polarizer, increasing the optical efficiency two times compared with the conventional LC lens.

Original languageEnglish
Pages (from-to)5077-5080
Number of pages4
JournalOptics Letters
Volume45
Issue number18
DOIs
StatePublished - 15 Sep 2020

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