| 摘要 |
The present invention relates to a focus-variable lens for a camera, capable of implementing, with a simple configuration, a zoom function of a lens used for a camera provided in a portable device such as a cellular phone, a smartphone or a tablet PC. The focus-variable lens, according to one aspect of the present invention, comprises: a lens member having a plate shape, of which both surfaces are parallel; and a piezoelectric element attached to at least one of the upper surface and the lower surface of the lens member and flexibly deformed according to an application of power such that the lens member is bent in a predetermined direction, wherein the lens member has a predetermined diameter, thickness and refractive index so as to have a predetermined focal distance when the lens member is bent. |
