| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a varifocal optical lens for a camera module incorporated in a wireless mobile communication device or the like. <P>SOLUTION: The varifocal optical lens includes: a membrane; a frame which is fixed to the membrane and has a receiving hole formed in the middle; a transparent substrate which is fixed to the frame to seal optical fluid received in the receiving hole; an actuator to change a curvature of a fluid lens part by bending the circumference of the fluid lens part formed around a central portion of the receiving hole; and a restriction lessening member which is adapted to lessen a restrictive force of an edge of the fluid lens part, is made of a transparent material, has an area smaller than the fluid lens part to correspond to an inner side of the fluid lens part except the edge of the fluid lens part, and has a larger Young's modulus than the membrane. Since the fluid lens part has generally a spherical profile from a conical profile, the fluid lens part may be suitable for an optical design requiring a fluid lens part having a spherical profile. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
