Polarizing plastic optical device and process for producing the same

A polarizing plastic optical element comprising a polarizing film having first and second surfaces and optical resin layers arranged on the first and second surfaces of the polarizing film, wherein:

• the polarizing film contains a hydroxyl group-containing resin;
• raw material for the optical resin layer is a resin obtained by polymerizing a polymerization raw material composition containing a first compound containing a first functional group, a second compound containing a second functional group, and a polymerization catalyst, the first and second compounds being main components of the polymerization raw material composition, the first functional group being at least one selected from isocyanate functional group and isothiocyanate functional group, the second functional group being mercapto group;
• and
• the optical element further comprises chemically-bonded interfaces between the polarizing film and the optical resin layers, each chemically-bonded interface being at least one of a urethane bonded surface and a thiourethane bonded surface in which the first functional group of the raw material for the optical resin layer and hydroxyl group of the polarizing film are chemically bonded.