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US 12,667,916 B2Granted
Method for manufacturing an external component including a diffraction grating
AssigneeComadur SA
InventorsPierry Vuille, Benoit Giry, Gabriel Rittiner, Bastien Combotte
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Abstract
A method for manufacturing an external component of a watch, of a fashion item or of a jewellery item, wherein the external component includes depositing an opaque base layer on all or part of the surface of an inner face of a substrate made of a transparent material, localised ablation of the base layer by laser machining, so as to form at least one pocket the bottom of which has a diffraction grating.
Claims8
A method for manufacturing an external component of a watch, of a fashion item or of a jewellery item, wherein the method comprises the following steps of:
- depositing an opaque base layer on all or part of the surface of an inner face of a substrate made of a transparent material;
- and
- localised ablation of the opaque base layer by laser machining, so as to form at least one pocket the bottom of which has a diffraction grating,
- wherein the bottom of the pocket is formed by the substrate and by the opaque base layer,
- wherein a plurality of localized ablation steps are performed so as to produce a plurality of diffraction gratings, and
- wherein the plurality of diffraction gratings are formed of a mixture of materials of the opaque base layer and the substrate.
3 more elements
Dependencies are inferred from the claim text.