Method and device for pressing against each other two ophthalmic lenses in order to build an electrochromic cell
AssigneeEssilor International
InventorsRachid El Amrani, Antoine Monvoisin
Life of this patent
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Abstract
A device for pressing against each other a first ophthalmic lens having a first face and a second ophthalmic lens having a second face in order to build an electrochromic cell comprising a cavity delimited by the first and second faces, the first and second ophthalmic lenses being superposed and an adhesive substance being applied on at least one of the first and second faces to form the cavity, comprises the first and second ophthalmic lenses and at least one spring adapted to apply a pressure effort on the first and second ophthalmic lenses. It further comprises a programmable electric motor adapted to actuate said at least one spring and to control said pressure effort.
Claims16
A method for pressing against each other a first ophthalmic lens having a first face and a second ophthalmic lens having a second face in order to build an electrochromic cell having a cavity delimited by said first and second faces, said first and second ophthalmic lenses being superposed and an adhesive substance being applied on at least one of said first and second faces to form said cavity, said method comprising:
- applying a pressure effort on said first and second ophthalmic lenses by at least one spring;
- and
- actuating said at least one spring and managing said pressure effort by a programmable electric motor,
- wherein said managing further comprises defining said pressure effort by a predetermined maximum value of an operating current of said motor beyond which said motor is programmed to stop.
A device for pressing against each other a first ophthalmic lens having a first face and a second ophthalmic lens having a second face in order to build an electrochromic cell having a cavity delimited by said first and second faces, said first and second ophthalmic lenses being superposed and an adhesive substance being applied on at least one of said first and second faces to form said cavity, said device comprising:
- said first and second ophthalmic lenses and at least one spring adapted to apply a pressure effort on said first and second ophthalmic lenses;
- and
- a programmable electric motor adapted to actuate said at least one spring and to control said pressure effort,
- wherein the programmable electric motor is further adapted to control the pressure effort by being adapted to define said pressure effort by a predetermined maximum value of an operating current of said motor beyond which said motor is programmed to stop.
Dependencies are inferred from the claim text.