MICRO ZOOM LENS FABRICATED BY SMALL NUMBER OF LENSES INCLUDING PLASTIC LENS

摘要

PURPOSE: A micro zoom lens is provided to correct aberration and reduce largely production cost by using a plastic lens. CONSTITUTION: A micro zoom lens includes a first lens group, a second lens group, and a third lens group. The first lens group includes a first lens(1) having a negative refractive index and a second lens(2) having a positive refractive index. The second lens group includes a third lens(3) having a positive refractive index and a fourth lens(4) having a negative refractive index. The third lens group includes a fifth lens(5) having a positive refractive index. Each of the first to the third lens groups includes at least one plastic lens.