Liquid crystal microlens with tunable-focus over focal plane driven by low-voltage signal

Shengwu Kang; Xing Rong; Xinyu Zhang; Changsheng Xie; Tianxu Zhang

doi:10.1117/12.2000629

27 November 2012 Liquid crystal microlens with tunable-focus over focal plane driven by low-voltage signal

Shengwu Kang, Xing Rong, Xinyu Zhang, Changsheng Xie, Tianxu Zhang

Proceedings Volume 8555, Optoelectronic Devices and Integration IV; 855519 (2012) https://doi.org/10.1117/12.2000629
Event: Photonics Asia, 2012, Beijing, China

Abstract

A liquid crystal (LC) microlens with a new type of electrode pattern is designed. The both bottom and top ITO electrodes of LC microlens are placed face to face, and are separated by glass spacer with the thickness in micron scale, and then LC materials are injected into the cell constructed by them. Because of the two electrodes directly and closely facing the LC layer injected, the design can largely decrease the driving signal voltage for LC lens. The bottom electrode is designed with one round hole pattern. The top electrode is four circle patterns. The diameters of round hole and circle are 500μm and 160μm, respectively. Each circle pattern electrode can be used to focus incident light into different region over the focal plane of LC lens. When the four circle electrodes are driven by different signal at the same time, the focus can be moved off-axis over the focal plane of LC lens, and thus the voltage amplitude can be varied in the range from 0V_rms to 20V_rms. So, we realize a LC microlens with tunable-focus over the focal plane of LC lens driven by low-amplitude voltage signal.

Citation Download Citation

Shengwu Kang, Xing Rong, Xinyu Zhang, Changsheng Xie, and Tianxu Zhang "Liquid crystal microlens with tunable-focus over focal plane driven by low-voltage signal", Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 855519 (27 November 2012); https://doi.org/10.1117/12.2000629

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available