Spectacle lens production method
AssigneeHoya Lens Thailand Ltd.
InventorYuji Hoshi
Life of this patent
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Abstract
A method for producing a spectacle lens 2 including a base portion 2 that is made of a resin material and includes a convex object-side face and a concave eyeball-side face, and an optical element 12 that is made of a material different from the material for forming the base portion and is embedded in the base portion, is described. The method includes: arranging an optical element in a cavity 28 of a mold including a first mold part 20 and a second mold part 24 that can be opened and closed; introducing a resin material for forming a base portion of the spectacle lens into the cavity of the mold; obtaining the spectacle lens by curing the resin material that is a resin for forming the base portion; disassembling the mold; and detaching the spectacle lens from the mold.
Claims8
A method for producing a spectacle lens including a base portion that is made of a resin material and includes a convex object-side face and a concave eyeball-side face, and an optical element embedded in the base portion, the method comprising:
- a step of providing the optical element so as to be arranged in a cavity of a mold including a first mold part and a second mold part that can be opened and closed;
- a step of introducing the resin material for forming the base portion of the spectacle lens into the cavity of the mold;
- a step of obtaining the spectacle lens by curing the resin material to form the base portion;
- a step of disassembling the mold;
- and
- a step of detaching the spectacle lens from the mold, wherein
- the step of arranging the optical element includes:
- a step of positioning a support for the optical element at a predetermined position on a surface on the first mold part, and
- a step of placing the optical element on the support,
- the support is made of the same resin material as that forming the base portion of the spectacle lens, and
- the optical element is a plurality of beads made of material having a refractive power that is different from that of the resin material for forming the base portion and is arranged inside the base portion without being exposed to an outside of the spectacle lens.
Dependencies are inferred from the claim text.