| 摘要 |
PROBLEM TO BE SOLVED: To obtain a zoom lens by which a photographing viewing angle is widened, and whose portability is excellent by shortening a lens entire length, and which consists of three groups, and to provide an optical equipment using the zoom lens. SOLUTION: In the zoom lens having the first lens group L1 of negative refracting power, the second lens group L2 of positive refracting power and the third lens group L3 of the positive refracting power in this order from an object side and performing variable power by moving respective lens groups L1-L3, the third lens group L3 consists of one or two lenses including a positive lens, and refractive index ndp3 and Abbe numberνdp3 of the material of the positive lens in the third lens group L3 are respectively appropriately set.
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