Wide angle lens and imaging apparatus

摘要

A wide angle lens consists essentially of a front group and a rear group in this order from an object side. The front group consists essentially of two negative lenses and a positive lens in this order from the object side, and all of the three lenses are made of an identical material. The rear group includes at least one positive lens and at least one negative lens, and a lens closest to an image side in the rear group is a negative lens. When a refractive index for d-line of the material of the lenses in the front group is NF, conditional expression (1): 1.48

主权项

1. A wide angle lens consisting of:
a front group; and a rear group in this order from an object side, wherein the front group consists of three lenses of two negative lenses and a positive lens in this order from the object side, and all of the three lenses are made of an identical material, the material of all of the three lenses of the front group having identical Abbe numbers, wherein the rear group consists of two or more and four or less lenses, and includes at least one positive lens and at least one negative lens, and a lens closest to an image side in the rear group is a negative lens, and the material of the negative lens closest to the image side in the rear group is glass, and wherein the following conditional expressions (1) and (4) are satisfied:
1.48