IMAGE PICKUP LENS, IMAGE PICKUP DEVICE, AND PORTABLE TERMINAL

摘要

Provided is a thin and compact image pickup lens having a high IR cutting filter function. To this end, the image pickup lens (LN) comprises lens blocks Cn (n=1, 2, 3), wherein a lens substrate (Ln2) formed of a parallel plate and a lens portion (Ln1, Ln3) having a positive or negative power are made of different materials. The third lens block c3 has a lens portion (L33) on only one of the surfaces of the lens substrate (L32) and has an IR cutting filter film (CT) on the other surface of the lens substrate (L32).