Abstract: The invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of providing a lens mold having an optical surface; forming a layer of a super hydrophobic material over the optical surface, where the super hydrophobic material contains an amount of dipodal silane that is a relative percentage of the super hydrophobic material; forming an anti-reflective coating layered structure over the layer of the super hydrophobic material; and forming a layer of a coupling agent deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating or spin coating using a solution of a coupling agent in an aprotic solvent.

Abstract: The invention relates to a method of applying an anti-reflective coating to an optical surface of a mold, including providing a lens mold having an optical surface, forming a deposition layer of a fluoride or oxide material to the optical surface of the lens mold, forming a layer of a hydrophobic material over the deposition layer, wherein the hydrophobic material contains an amount of dipodal silane that is a relative percentage of the hydrophobic material, forming a first layer of SiO2 with a thickness of 5-40 nm over the layer of the hydrophobic material, forming an anti-reflective coating layered structure over the first layer of SiO2, and forming a layer of a silane coupling agent that is deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating using a solution of silane coupling agent in an aprotic solvent.

Abstract: The invention relates to a method of applying an anti-reflective coating to an optical surface of a mold, including providing a lens mold having an optical surface, forming a deposition layer of a fluoride or oxide material to the optical surface of the lens mold, forming a layer of a hydrophobic material over the deposition layer, wherein the hydrophobic material contains an amount of dipodal silane that is a relative percentage of the hydrophobic material, forming a first layer of SiO2 with a thickness of 5-40 nm over the layer of the hydrophobic material, forming an anti-reflective coating layered structure over the first layer of SiO2, and forming a layer of a silane coupling agent that is deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating using a solution of silane coupling agent in an aprotic solvent.

Abstract: The invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of providing a lens mold having an optical surface; forming a layer of a super hydrophobic material over the optical surface, where the super hydrophobic material contains an amount of dipodal silane that is a relative percentage of the super hydrophobic material; forming an anti-reflective coating layered structure over the layer of the super hydrophobic material; and forming a layer of a coupling agent deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating or spin coating using a solution of a coupling agent in an aprotic solvent.

Abstract: The present invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of providing a lens mold having an optical surface; forming a layer of a hydrophobic material over the optical surface, wherein the hydrophobic material contains an amount of dipodal silane that is a relative percentage of the hydrophobic material; forming an anti-reflective coating layered structure over the layer of the hydrophobic material; and forming a layer of a coupling agent deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating using a solution of a coupling agent in an aprotic solvent.

Abstract: The present invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of providing a lens mold having an optical surface; forming a layer of a super hydrophobic material over the optical surface, wherein the super hydrophobic material contains an amount of dipodal silane that is a relative percentage of the super hydrophobic material; forming an anti-reflective coating layered structure over the layer of the super hydrophobic material; and forming a layer of a coupling agent deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating or spin coating using a solution of a coupling agent in an aprotic solvent.

Abstract: Certain aspects of the invention are directed to a photochromic lens having a graded or variable tint, methods and molds of making the same. In one embodiment, the photochromic lens includes a lens element having a upper portion and a lower portion; and a UV-absorbing layer formed of a UV-absorbing material on a surface of the lens element, such that the UV-absorbing material is more concentrated at the lower portion of the lens element and less concentrated at the upper portion, thereby allowing more UV light to strike the photochromic at the upper portion of the lens element than at the lower portion. The lens element comprises a photochromic composition.

Abstract: The present invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of providing a lens mold having an optical surface; forming a layer of a hydrophobic material over the optical surface, wherein the hydrophobic material contains an amount of dipodal silane that is a relative percentage of the hydrophobic material; forming an anti-reflective coating layered structure over the layer of the hydrophobic material; and forming a layer of a coupling agent deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating using a solution of a coupling agent in an aprotic solvent.

Abstract: The present invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of: providing a lens mold having an optical surface; forming a layer of a super hydrophobic material with a thickness of about 30 to 40 nm over the optical surface, wherein the super hydrophobic material contains dipodal silane; forming an anti-reflective coating layered structure over the layer of the super hydrophobic material; and forming a layer of a cyclic azasilane coupling agent that is deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition or by dip coating using a solution of cyclic azasilane coupling agent in an aprotic solvent.

Abstract: The present invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of providing a lens mold having an optical surface; forming a layer of a super hydrophobic material over the optical surface, wherein the super hydrophobic material contains an amount of dipodal silane that is a relative percentage of the super hydrophobic material; forming an anti-reflective coating layered structure over the layer of the super hydrophobic material; and forming a layer of a coupling agent deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition under aprotic conditions or by dip coating or spin coating using a solution of a coupling agent in an aprotic solvent.

Abstract: The present invention relates to a method of making an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of: providing a lens mold having an optical surface; forming a layer of a first hydrophobic material with a monolayer thickness over the optical surface; forming a layer of a second hydrophobic material with a thickness of about 10 to 50 nm over the layer of a first hydrophobic material, wherein the first and second hydrophobic materials are different; forming an anti-reflective coating layered structure over the layer of a second hydrophobic material; and forming a layer of a coupling agent that is deposited using vapor deposition and with a thickness of about 1 to 10 nm over the anti-reflective coating layered structure.

Abstract: The present invention relates to a method for manufacturing a polarized lens. In one embodiment, the method includes the steps of treating a polarized film with a composition to form a treated polarized film, providing a front lens mold having a concave surface with a curvature, spin-coating a hard coat composition onto the concave surface of the front lens mold to form a hard coat layer thereon, forming a first adhesive layer on the hard coat layer, placing the treated polarized film on the adhesive layer, curing the adhesive layer with UV or visible light to bond the treated polarized film to the hard coat layer, thereby forming a polarized front lens mold, and forming a polarized lens with the polarized front lens mold.

Abstract: The present invention is directed to a water soluble, randomly substituted partial N-, partial O-acetylated chitosans or chitosan derivatives and methods of preparing water soluble, randomly substituted partial N-, partial O-acetylated chitosans or chitosan derivatives comprising the steps of dissolving the chitosan or chitosan derivative into an aqueous acidic solution and reacting the chitosan or chitosan derivative with an acetylating agent in the presence of a phase transfer reagent. The present invention is further directed to a pharmaceutical preserving composition comprising: (a) at least one chitosan or chitosan derivative and (b) at least one buffer solution, as well as methods of preserving contact lens solutions and disinfecting contact lens using such composition.

Abstract: The present invention relates to a method for manufacturing a polarized lens. In one embodiment, the method includes the steps of treating a polarized film with a composition to form a treated polarized film, providing a front lens mold having a concave surface with a curvature, spin-coating a hard coat composition onto the concave surface of the front lens mold to form a hard coat layer thereon, forming a first adhesive layer on the hard coat layer, placing the treated polarized film on the adhesive layer, curing the adhesive layer with UV or visible light to bond the treated polarized film to the hard coat layer, thereby forming a polarized front lens mold, and forming a polarized lens with the polarized front lens mold.

Abstract: Water-soluble chitosan having a low concentration of endotoxin is disclosed. Products containing the water-soluble chitosan are also disclosed. Methods of making and using water-soluble chitosan having a low concentration of endotoxin are further disclosed.

Abstract: An apparatus and method for holding a mold assembly and molding an optical lens using the same. In one aspect, the present invention provides an apparatus for holding a mold assembly, wherein the mold assembly includes a front mold, a back mold and a strip wrapping around the edges of the front mold and back mold to form a sleeve. In one embodiment, the apparatus includes a first portion and a second portion. The first portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The second portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base.

Abstract: An apparatus and method for holding a mold assembly and molding an optical lens using the same. In one aspect, the present invention provides an apparatus for holding a mold assembly, wherein the mold assembly includes a front mold, a back mold and a strip wrapping around the edges of the front mold and back mold to form a sleeve. In one embodiment, the apparatus includes a first portion and a second portion. The first portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The second portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base.

Abstract: An apparatus and method for holding a mold assembly and molding an optical lens using the same. In one aspect, the present invention provides an apparatus for holding a mold assembly, wherein the mold assembly includes a front mold, a back mold and a strip wrapping around the edges of the front mold and back mold to form a sleeve. In one embodiment, the apparatus includes a first portion and a second portion. The first portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The second portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base.

Abstract: An apparatus and method for holding a mold assembly and molding an optical lens using the same. In one aspect, the present invention provides an apparatus for holding a mold assembly, wherein the mold assembly includes a front mold, a back mold and a strip wrapping around the edges of the front mold and back mold to form a sleeve. In one embodiment, the apparatus includes a first portion and a second portion. The first portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base. The second portion has a top part, a bottom part, and a middle part connecting the top part and the bottom part, the middle part including a base and a holder coupled to the base.

Abstract: An apparatus and method for filling a mold for casting optical lens. Two molding shells and a closure member form a mold with a molding cavity. To fill the mold a fluid lens-forming material is introduced into the molding cavity through a casting opening formed in the closure member. Air is venting out during the filling process through a venting opening also formed in the closure member. Both the casting opening and the venting opening are located in the upper portion of the molding cavity but spaced apart from each other at an acute angle.