Patent ID: 7551368

Claim:
An auto-focusing camera module, comprising: a base; a first lens barrel mounted on the base; a second lens barrel threadedly engaged with the first lens barrel; a first lens arranged in the second lens barrel; an image pickup module mounted on the base, the image pickup module being coaxially aligned with the first lens; a lens assembly arranged in the second lens barrel, the lens assembly including a mounting plate and a plurality of second lenses mounted on the mounting plate, the second lenses each having a distinct effective focal length, the mounting plate being movable in a manner such that each of the second lenses is selectively aligned with the first lens, the lens assembly further including a liquid containing layer and high refractive index liquid contained in the liquid containing layer, the liquid containing layer including a reservoir portion and a plurality of meniscus-shaped lens portions serving as the second lenses, and the reservoir portion being in communication with the meniscus-shaped lens portions; and a closed loop arranged on the reservoir portion of the liquid containing layer, the closed loop being expandable and compressible, thus correspondingly expanding or compressing the reservoir portion so as to adjust an amount of the liquid contained in each of the meniscus-shaped lens portions such that a focal length associated with each meniscus-shaped lens portion is adjusted.