IMAGING LENS AND IMAGING APPARATUS INCLUDING THE SAME

摘要

The imaging lens substantially consists of a front group having positive refractive power, an aperture stop, a rear group having positive refractive power in this order from the object side. The front group substantially consists of a lens having a negative meniscus shape with a convex surface toward the object side, a negative lens, and a positive lens in this order from the object side. The rear group substantially consists of a positive lens, a negative lens, a positive lens, and a positive lens in this order from the object side. In the case that the Abbe numbers with respect to the d-line of the first lens and the second lens from the object side in the front group are respectively ν1 and ν2, conditional expressions (1) and (2) below are satisfied:;10.0<ν2−ν1  (1);40<ν2  (2).

主权项

1. An imaging lens substantially consisting of a front group having positive refractive power, an aperture stop, and a rear group having positive refractive power;
the front group substantially consists of a negative meniscus lens with a convex surface toward the object side, a negative lens, and a positive lens in this order from the object side; the rear group substantially consists of a positive lens, a negative lens, a positive lens, and a positive lens in this order from the object side; a full angle of view exceeds 90°; and conditional expressions (1) and (2) below are satisfied:
10.0<ν2−ν1  (1)40<ν2  (2),where
ν1: the Abbe number with respect to the d-line of the negative meniscus lens, and ν2: the Abbe number with respect to the d-line of the second negative lens from the object side of the front group.