Patent ID: 8936371
Filing Date: 2015-01-20
Classification: B29D,G02B,H01L

Abstract:
1. A wafer level lens having at least one lens module having a substrate and a plurality of lenses formed on said substrate, wherein: the wafer level lens has a black resist layer formed on the surface of said lens module or on the surface of said substrate, the black resist layer is formed with a pattern having an opening at a part intersecting the optical axis of said lens, the black resist layer has a reflection rate of 2% or less and a transmittance of 1% or less for visible light having a wavelength of 400 to 700 nm, and the black resist layer is formed by a black resist composition comprising a dispersing resin being a graft copolymer having in a molecule a number of atoms excluding a hydrogen atom of in a range of 400 to 1000, the graft copolymer having a graft chain selected from the group consisting of a polyester structure, a polyether structure and a polyacrylate structure, and the graft polymer containing a structure unit represented by any one of formulae (1) to (5): wherein in formulae (1) to (5), X Y Z R represents a hydrogen atom or a monovalent organic group, and R's may be the same or different in the graft copolymer, and n, m, p, q and r each independently represents an integer of 1 to 500.