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US 2019/0094571 A1Published application
Spectacle lens
AssigneeInui Lens Co., Ltd.
InventorYoshinori INUI
Life of this patent
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Abstract
A spectacle lens is produced through a first step of stacking a first member colored in cyan and a second member colored in red and integrating the first member and the second member, and a subsequent second step of partially polishing a periphery of a convex surface of the first member. Provision of the polishing step enables unique design and production of appropriate numbers of widely varied distinctive spectacle lenses.
Claims7
A spectacle lens comprising first and second rigid plastic members having different tones and permanently integrated with each other without a gap,
- the spectacle lens being produced through
- a first step of stacking a first member colored in a first tone and disposed outside so as not to face an eye, and a second member colored in a second tone and disposed inside so as to face the eye, and integrating the first member and the second member,
- and a second step of partially removing a peripheral surface portion of the lens having been processed in the first step, by causing a processing head to be in contact with or applying laser beams to a convex surface of the first member or a concave surface of the second member, wherein
- in the second step,
- the plastic member is polished in a direction substantially perpendicular to the convex surface of the first member or the concave surface of the second member,
- to form a border line between a peripheral edge of the first member and the second member, or between a peripheral edge of the second member and the first member,
- to achieve clear tone change with respect to the border line.
4 more elements
Dependencies are inferred from the claim text.