Provided is an image pickup lens, in which the optical characteristic can
be improved and, further, the productivity can be improved through
increasing the telecentricity by keeping the distance between the exit
pupil and the sensor and effectively correcting the coma aberration and
the distortion aberration. A first lens which is a meniscus lens having a
positive power with its convex face facing an object side, a diaphragm,
and a second lens which is a lens having a positive power with a strong
convex face facing an image pickup surface side are provided in order
from the object side. The first lens and the second lens are to satisfy
the condition represented by following expressions:
4.times.f.sub.2.gtoreq.f.sub.1.gtoreq.f.sub.2 (1)
1.5.times.f1.gtoreq.f.sub.2.gtoreq.0.9.times.f1 (2) where, f1: focal
length of the whole lens system f.sub.1: focal length of the first lens
f.sub.2: focal length of the second lens.