| abstract |
The present invention relates to a method for producing an optical lens made of a high refractive index resin by cast molding of a polymerizable composition for an optical material, which reduces defects such as cloudiness and bubbles and improves yield. When a polymerizable composition for an optical material is cast-molded, by using a rotary pump or a Mono pump and casting it in place of conventional nitrogen pressurization, the solution becomes white turbid, A high refractive index resin optical lens can be obtained with high yield by reducing defects such as bubbles. [Selection figure] None |