Patent ID: 6995916

Claim:
A method of producing a microlens array, comprising: a patterning step of forming a first optical resin layer having a first refractive index on a transparent substrate and forming a plurality of microlens planes arrayed in a two-dimensional pattern on the front surface of said first optical resin layer; a filling step of filling irregularities of the microlens planes with a resin having a second refractive index; and a planarizing step of planarizing the front surface, opposed to the microlens planes, of said resin filling the microlens planes, to form a second optical resin layer; wherein said planarizing step is performed by planarizing the front surface of said resin filling the microlens planes by a flat stamping process wherein the first optical resin layer is made from a UV-cure type resin having a low refractive index.