Patent ID: 8031415
Filing Date: 2011-10-04
Classification: B82Y,G02B,Y10T

Abstract:
1. An imaging lens comprising: one or two lens blocks each including: a lens substrate that is a parallel plate, and a lens contiguous with at least one of object-side and image-side substrate surfaces of the lens substrate, the lens exerting a positive or negative optical power; and an aperture stop restricting light amount, wherein, in each of said one or two lens blocks, said lens included therein is formed of a material different from a material of which said lens substrate is formed; wherein said one or two lens blocks comprise a first lens block disposed at a most object-side position, the first lens block exerting a positive optical power and including, as said lens substrate, a first lens substrate, and as said lens, a lens L[LS wherein conditional formula (C1) below is fulfilled: where N[LS N[L[LS