LARGAN MEDICAL CO., LTD. Patent applications |
Patent application number | Title | Published |
20130293834 | CONTACT LENS FOR MYOPIA CONTROL - This invention provides a contact lens for myopia control comprising: an object-side surface comprising a central zone, a transition zone and a peripheral zone which are concentric and have different refractive power, at least one of the three zones being aspheric; and an image-side surface; wherein the central zone provides correction power to focus a foveal image on the retina, the peripheral zone provides a myopic defocus effect by generating a para-fovea image in front of the retina, and the transition zone with one or more focuses provides a refractive power in diopter (D) ranging from +0.25 D to +8.00 D. | 11-07-2013 |
20130180212 | METHOD OF PACKAGING AND MANUFACTURING A CONTACT LENS IN A CONTAINER - This invention provides a method of packaging and manufacturing a contact lens in a container, wherein the container comprises a central recess formed of a curved surface with a ring-shaped protruding portion surrounding the curved surface, the method comprising the steps of: providing the container; injecting a lens-forming monomer mixture into the central recess to form the contact lens along the curved surface of the central recess; combining the container and a hand-held section; pouring a solution into the container to immerse the contact lens in the container; and sealing the container with a lid for sealing the contact lens and the solution in the container; wherein the curved surface of the central recess has one or a plurality of continuous radii of curvature R | 07-18-2013 |
20120272866 | Contact Lenses with Pores for High Oxygen Permeability and Manufacturing Method Thereof - Contact lenses with pores having high oxygen permeability and a manufacturing method thereof. The manufacturing method comprises the steps of uniformly mixing water-soluble salts and the formula of contact lenses having hydrophilic monomers to form a mixed formula; molding and forming the mixed formula to obtain contact lenses; dissolving and dialyzing the water-soluble salts by a water solution so as to form a plurality of pores with a predetermined diameter on a surface and in the interior of the contact lenses. The diameter of pore size has an allowable range between 0.03 μm and 0.05 μm such that the contact lenses with high oxygen permeability can be obtained. | 11-01-2012 |