Open AccessDriving method for liquid crystal lens to increase focus range
Author(s) -
Chen Xiaoxi,
Li Guangyong,
Li Pengwei,
Ye Mao
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.7146
Subject(s) - lens (geology) , liquid crystal , optics , materials science , voltage , focus (optics) , root mean square , range (aeronautics) , focal length , optical power , crystal (programming language) , optoelectronics , physics , electrical engineering , engineering , computer science , laser , programming language , composite material
A new method of voltage application is proposed to increase the focus range of a liquid crystal lens driven by two voltages. It is possible for the optical power of the liquid crystal lens to change in a wider range, while the root mean square aberration of low level is maintained. The liquid crystal lens is driven by a frequency of the voltages different in positive and negative lens states to obtain its largest optical power in each state. An obvious increase in focus range is realised.