Patent ID: 8238046

Claim:
A lens module, comprising: a first lens; a second lens, an optical axis of the second lens being aligned with that of the first lens; and an electrostrictive member made from an artificial muscle material and defining a through hole therein for facilitating light passing through, and being sandwiched between the first lens and the second lens, the electrostrictive member having a first surface and a second surface on opposite sides thereof, the first surface directly adhered to the first lens, and the second surface directly adhered to the second lens, a thickness direction of the electrostrictive member being parallel to optical axes of the first lens and the second lens, the electrostrictive member deforming in the thickness direction thereof when an electric current with an intensity is applied thereto, and returning back to its undeformed state when the electric current is removed, whereby a space between the first and second lenses is adjusted, and at least one of the first and second lenses is moved relative to one another.