Imaging lens and imaging apparatus

摘要

An imaging lens consists of, in order from the object side, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, a positive sixth lens, and a negative seventh lens. When f12 is the combined focal length of the first lens and the second lens, f is the focal length of the entire system, νd7 and νd3 are respectively the Abbe's numbers of the materials of the seventh lens and the third lens with respect to the d line, the following conditional formulae are satisfied:
f12/f<−3.2  (1)νd7<55  (2)40<νd3  (3).

主权项

1. An imaging lens consisting of, in order from the object side, a first lens having a negative power, a second lens having a positive power, a third lens having a positive power, a fourth lens having a negative power, a fifth lens having a positive power, a sixth lens having a positive power, and a seventh lens having a negative power, wherein
the following conditional formulae are satisfied:
f12/f<−3.2  (1)νd7<55  (2)40<νd3  (3)where,f12 is the combined focal length of the first lens and the second lens,f is the focal length of the entire system,νd7 is the Abbe's number of the material for the seventh lens with respect to the d line, andνd3 is the Abbe's number of the material for the third lens with respect to the d line.