Electrowetting liquid lens array on curved substrates for wide field of view image sensor

Yousung Bang; Muyoung Lee; Yong Hyub Won

doi:10.1117/12.2212032

21 March 2016 Electrowetting liquid lens array on curved substrates for wide field of view image sensor

Yousung Bang, Muyoung Lee, Yong Hyub Won

Proceedings Volume 9705, Microfluidics, BioMEMS, and Medical Microsystems XIV; 970508 (2016) https://doi.org/10.1117/12.2212032
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

In this research, electrowetting liquid lens array on curved substrates is developed for wide field of view image sensor. In the conventional image sensing system, this lens array is usually in the form of solid state. However, in this state, the lens array which is similar to insect-like compound eyes in nature has several limitations such as degradation of image quality and narrow field of view because it cannot adjust focal length of lens. For implementation of the more enhanced system, the curved array of lenses based on electrowetting effect is developed in this paper, which can adjust focal length of lens. The fabrication of curved lens array is conducted upon the several steps, including chamber fabrication, electrode & dielectric layer deposition, liquid injection, and encapsulation. As constituent materials, IZO coated convex glass, UV epoxy (NOA 68), DI water, and dodecane are used. The number of lenses on the fabricated panel is 23 by 23 and each lens has 1mm aperture with 1.6mm pitch between adjacent lenses. When the voltage is applied on the device, it is observed that each lens is changed from concave state to convex state. From the unique optical characteristics of curved array of liquid lenses such as controllable focal length and wide field of view, we can expect that it has potential applications in various fields such as medical diagnostics, surveillance systems, and light field photography.

Conference Presentation

Citation Download Citation

Yousung Bang, Muyoung Lee, and Yong Hyub Won "Electrowetting liquid lens array on curved substrates for wide field of view image sensor", Proc. SPIE 9705, Microfluidics, BioMEMS, and Medical Microsystems XIV, 970508 (21 March 2016); https://doi.org/10.1117/12.2212032

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