| 摘要 |
A micro zoom lens is provided to miniaturize a zoom lens and to reduce a shift of a third lens group by forming a seventh lens by material having a high refractive index. A zoom lens includes a first lens group(100-1), a second lens group(110-1), and a third lens group(120-1). The first lens group has a negative refractive index. The second lens group and the third lens group have a positive refractive index. An interval between the first lens group and the second lens group is reduced. The second lens group is moved to an object side. An interval between the second lens group and the third lens group is increased. The first lens group includes a first lens(101), a second lens(102), and a third lens(103). The first lens has a meniscus shape.
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