Patents by Inventor Jean-Louis Mercier

Jean-Louis Mercier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for molding ophthalmic lenses
    Patent number: 7144529
    Abstract: The invention concerns a method for moulding a lens, between a first mould (2) and a second mould (6) which consists in: machining at least one of the moulds (2) into the shape of the lens to be obtained, before moulding. The invention enables to obtain finer lenses, while limiting the required amount of hardenable material for making the lens.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: December 5, 2006
    Assignee: Essilor International
    Inventor: Jean-Louis Mercier
  • Aspherical contact lens for correcting presbyopia
    Patent number: 5790231
    Abstract: A contact lens has a spherical surface (the rear surface, for example) and an aspherical surface (in this case, the front surface). The caustic curve of the wave surface which emerges from the contact lens comprises two cusps, one of which is paraxial and the other of which is marginal. The lens has applications in the correction of presbyopia.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: August 4, 1998
    Assignee: Cabinet Bonnet -Thirion
    Inventor: Jean-Louis Mercier
  • Gradient index, null geometrical power unifocal ophthalmic lens
    Patent number: 5033838
    Abstract: A unifocal ophthalmic lens has a part-spherical concave surface and a part-spherical convex surface. Its refractive index varies radially from its optical axis to its periphery. It has a null geometrical power so that its optical power is due only to the variation in its refractive index.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: July 23, 1991
    Inventors: Emmanuel Bonbon, Jean-Louis Mercier
  • Method of minimizing the maximum thickness of a unifocal ophthalmic lens and gradient index unifocal ophthalmic lens obtained by application of this method
    Patent number: 5033839
    Abstract: A unifocal ophthalmic lens has part-spherical concave and convex surfaces. Its refractive index varies radially from its optical axis to its periphery. The variation of the refractive index is governed by a law such that the absolute value of the optical power of the lens is significantly greater than its geometrical power when the optical power is computed using the refractive index of the lens on its optical axis.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: July 23, 1991
    Inventors: Emmanuel Bonbon, Jean-Louis Mercier
  • Sight-correcting optical component such as an intra-ocular implant or contact lens
    Patent number: 5019098
    Abstract: An optical component such as an intra-ocular implant or contact lens for correcting sight has an aspherical surface in at least the central part of at least one side. The parameters of this surface are chosen so that for the optical system comprising the optical component and an associated eye model the object proximity curve is a specific shape.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: May 28, 1991
    Assignee: Essilor International Cie Generale d'Optique
    Inventor: Jean-Louis Mercier
  • Optical system using an ophthalmic lens and an intra-ocular lens to improve the sight of a person suffering from macular degeneration
    Patent number: 4957506
    Abstract: An optical system for improving the sight of a person suffering from macular degeneration comprises a high positive power ophthalmic lens adapted to be disposed in front of the eye to be treated and a high negative power intra-ocular lens adapted to be implanted in the eye to be treated after removal of its crystalline lens. At least one surface of each lens is an aspherical surface of revolution. This aspherical surface of revolution preferably has a generatrix that is a conic section.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: September 18, 1990
    Assignee: Essilor International Cie Generale d'Optique
    Inventor: Jean-Louis Mercier