| 摘要 |
PURPOSE: To provide a method for producing a glass lens aiming at the prevention of a melt adhesion to a forming surface, a cloudiness and a crack by press forming a material for glass lens forming on which surface where a functional surface is formed, a thin membrane having a peeling off function is formed, after removing the part where the thin membrane is not formed before the press forming. CONSTITUTION: This method for producing a glass lens is constituted by forming a thin membrane material having 10-1000Åthickness and a peeling off function on the surface of a material for glass lens forming prefabricated to the shape approximately resembling to a finished shape. At that time, since a peripheral part for supporting the forming material must be held in the membrane forming device, a non-membrane-coated part where no membrane is formed at the peripheral held part, is produced. After removing this part where no membrane is formed, by grinding to get rid of the part where the material for forming and the surface of the die directly come into contact with each other, the press forming is performed and the melt adhesion to the surface of the die on the surface of the material for the forming, etc., are totally prevented.
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