Method of producing a dyed optical component

Abstract

A method of producing a dyed optical component, comprises: a first step of dyeing one surface of a film made of transparent resin to produce a dyed film; and a second step of setting the dyed film in a predetermined mold and injecting the thermoplastic resin melted by heat into the mold in which the dyed film has been set to produce a dyed optical component integrally including the dyed film by film insert molding, the dyed film being set in the mold to make a dyed surface of the dyed film contact with the melted thermoplastic resin.

1 . A method of producing a dyed optical component, comprising:
 a first step of dyeing one surface of a film made of transparent resin to produce a dyed film; and   a second step of setting the dyed film in a predetermined mold and injecting the thermoplastic resin melted by heat into the mold in which the dyed film has been set to produce a dyed optical component integrally including the dyed film by film insert molding, the dyed film being set in the mold to make a dyed surface of the dyed film contact with the melted thermoplastic resin.   
     
     
         2 . The method of producing a dyed optical component according to  claim 1 , wherein the dyeing in the first step is performed according to a vapor deposition transfer dyeing method. 
     
     
         3 . The method of producing a dyed optical component according to  claim 2 , wherein the second step is a step of performing the film insert molding so that an, undyed surface of the dyed film forms a front surface of the optical component. 
     
     
         4 . The method of producing a dyed optical component according to  claim 3  further comprising, after the second step, a third step of forming a hard coat on the front surface of the optical component. 
     
     
         5 . The method of producing a dyed optical component according to  claim 4 , wherein the dyed optical component produced in the second step is a semi-finished lens, and the mold used in the second step is configured so that a wall surface for forming the front surface of the semi-finished lens is designed to form a predetermined optical surface and a wall surface for forming a rear surface of the semi-finished lens is designed to form a curved surface having no optic surface that determines a lens diopter. 
     
     
         6 . The method of producing a dyed optical component according to  claim 5 , wherein the thermoplastic resin used in the film insert-molding is a material selected from polycarbonate, polyamide, polyurethane, polystyrene, and acrylic resin, and a material of the film is the same material as the thermoplastic resin used in the film insert-molding.