| 摘要 |
A telephoto lens has three lens groups. A first lens group (10) includes a first positive lens (G11) having a meniscus shape and having a convex surface on the object side thereof, a negative lens (G12) arranged on the image side of the first positive lens and having a concave surface on the image side thereof, and a second positive lens (G13) arranged on the image side of the negative lens and having a convex surface on the object side thereof. Furthermore, the following inequalities are satisfied, where v11 designates the Abbe number of the first positive lens, v12 designates the Abbe number of the negative lens, and v13 designates the Abbe number of the second positive lens:
35 < v11 < 50 (1)
v12 < 45 (2)
75 < v13 (3)
v12 < v11 (4) |
