Patent ID: 8564886

Claim:
A zoom lens, in order along an optical axis from an object side to an image side, comprising: a first lens group having positive refractive power, and including three lenses, wherein two lenses of the first lens group have positive refractive power; a second lens group having negative refractive power, and including four lenses, wherein at least one lens of the second lens group has an aspheric surface; an aperture; a third lens group having positive refractive power, and including two lenses, wherein one lens of the third lens group has positive refractive power; a fourth lens group having positive refractive power, and including five lenses, wherein three lenses of the fourth lens group have positive refractive power, and a fifth lens group having positive refractive power, and including two lenses, wherein one lens of the fifth lens group has positive refractive power.