Patent ID: 8134636
Filing Date: 2012-03-13
Classification: G02F,G03B

Abstract:
1. A method for providing auto-focusing for a camera module that is tunable, comprising: fabricating one or more liquid crystal optical elements for forming a liquid crystal layer, wherein each liquid crystal optical element comprising: attaching the liquid crystal layer onto the camera module; providing focus on an object located between 10 cm to infinity, wherein achieving a prearranged response time of at most about 600 milliseconds using a predetermined focal length for the liquid crystal optical element; providing tuning for the predetermined focal length for the liquid crystal optical element from −20 cm to infinity when the object is located between 20 cm to infinity; providing tuning for the predetermined focal length from +20 cm to infinity when the object is located between 10 cm to 20 cm; providing tuning for the predetermined focal length to between +20 cm to −20 cm when the object is located between 10 cm to infinity; and providing continuous feedback from a plurality of image acquisitions for thereby improving upon the tuning of the predetermined focal length for the liquid crystal optical element.