COMPOUND FOR MOULDING LENS PRECURSOR Russian patent published in 2016 - IPC B29D11/00 

FIELD: physics, optics.

SUBSTANCE: invention relates to a method of moulding a lens precursor. According to the method, the first part of a lens precursor is prepared by polymerising a polymer reaction mixture using actinic radiation. The first part has the first concave surface with an optical quality and the opposite second surface with a non-optical quality. A fluid lens-forming reaction medium, which is adjacent to at least a portion of the first part, is provided. The combination of the first part and the fluid lens-forming reaction medium is placed in a chamber containing a gaseous phase. The fluid lens-forming reaction medium is subjected to steam in the chamber. Material is fed into the gaseous medium. The material in the gaseous medium is allowed to react with the lens-forming reaction medium so as to change properties of at least a portion of the lens-forming reactive medium. After changing the said properties, the lens-forming reaction medium is polymerised to form the second concave surface with optical qualities.

EFFECT: high quality of the obtained products.

9 cl, 6 dwg