CURVATURE CONTROL DEVICE FOR CONTROLLING THE CURVATURE OF A LENS SURFACE ACCORDING TO A MICRO ELECTRO FLUIDIC MODE AND A METHOD THEREOF

摘要

PURPOSE: A curvature control device and a method thereof are provided to change the curvature of a lens surface only with an electric wiring without the use of an outside pump or a machine by operating an electro fluidic mode based on an electrowetting technique and precisely controlling the lens surface by combining the main and sub control in the channel region.;CONSTITUTION: A curvature control device(100) includes a first fluid(F1), a second fluid(F2), a lens area(LA), a chamber and an electrode part. The first fluid contains polarity and a light transmission property. The second fluid containing a light transmission property is not mixed with the first fluid. The boundary surface of the first fluid and the second fluid composes a lens surface(LS) in the lens area. The chamber has multiple channel regions, and a different boundary surface of the first and second fluid acts as a driving surface inducing the curvature change of the lens surface in the chamber. The electrode part forms an electric field which changes the location of the driving surface. The multiple channel regions include more than one main channel(MC) and more than one sub channel(SC). A first driving surface(DS1) inducing the curvature change of the lens surface using the boundary surface of the first and second fluid is formed in the main channel. A second driving surface(DS2) inducing the curvature change of the lens surface using the boundary surface of the first and second fluid is formed in the sub channel which controls the curvature of the lens surface more minutely than the main channel.;COPYRIGHT KIPO 2013