Abstract: A method of determining the transmittance of a contact lens (200) includes the steps of obtaining a measurement of a first intensity of electromagnetic radiation reflected by ocular surface (100) with an intensity measuring device (400), positioning the contact lens (200) in direct contact with the ocular surface (100), obtaining a measurement of a second intensity of electromagnetic radiation transmitted through the contact lens (200) that is reflected a region (110) of the ocular surface (100) that is covered by the contact lens (200) with the intensity measuring device (400); and calculating the transmittance using the measurements of the first intensity and the second intensity.

Abstract: A method of determining the transmittance of a transparent article (250) includes the steps of obtaining a measurement of a first intensity of electromagnetic radiation reflected or emitted by reference surface (80) with an intensity measuring device (400), positioning the transparent article (250) over the reference surface (80), obtaining a measurement of a second intensity of electromagnetic radiation transmitted through the transparent article (250) that is reflected or emitted by a region (110) of the reference surface (80) that is covered by the transparent article (250) with the intensity measuring device (400); and calculating the transmittance using the measurements of the first intensity and the second intensity.

Abstract: A method of determining the transmittance of a contact lens (200) includes the steps of obtaining a measurement of a first intensity of electromagnetic radiation reflected by ocular surface (100) with an intensity measuring device (400), positioning the contact lens (200) in direct contact with the ocular surface (100), obtaining a measurement of a second intensity of electromagnetic radiation transmitted through the contact lens (200) that is reflected a region (110) of the ocular surface (100) that is covered by the contact lens (200) with the intensity measuring device (400); and calculating the transmittance using the measurements of the first intensity and the second intensity.

Abstract: A method of determining the transmittance of a transparent article (250) includes the steps of obtaining a measurement of a first intensity of electromagnetic radiation reflected or emitted by reference surface (80) with an intensity measuring device (400), positioning the transparent article (250) over the reference surface (80), obtaining a measurement of a second intensity of electromagnetic radiation transmitted through the transparent article (250) that is reflected or emitted by a region (110) of the reference surface (80) that is covered by the transparent article (250) with the intensity measuring device (400); and calculating the transmittance using the measurements of the first intensity and the second intensity.

Abstract: A method of determining the transmittance of a contact lens (200) includes the steps of obtaining a measurement of a first intensity of electromagnetic radiation reflected by ocular surface (100) with an intensity measuring device (400), positioning the contact lens (200) in direct contact with the ocular surface (100), obtaining a measurement of a second intensity of electromagnetic radiation transmitted through the contact lens (200) that is reflected a region (110) of the ocular surface (100) that is covered by the contact lens (200) with the intensity measuring device (400); and calculating the transmittance using the measurements of the first intensity and the second intensity.

Abstract: The present invention relates to a curable composition providing upon curing a transparent antistatic coating comprising a silica organosol, a salt comprising an alkali cation and a Bronsted acid. The invention further relates to optical articles comprising a substrate at least partially coated with a transparent antistatic coating formed by depositing onto substrate and curing the above curable composition. The obtained optical articles exhibit enhanced antistatic properties, high optical transparency, low haze and good mechanical properties, in particular a good abrasion resistance.

Abstract: The present invention relates to a curable composition providing upon curing a transparent antistatic coating comprising a silica organosol, a salt comprising an alkali cation and a Bronsted acid. The invention further relates to optical articles comprising a substrate at least partially coated with a transparent antistatic coating formed by depositing onto substrate and curing the above curable composition. The obtained optical articles exhibit enhanced antistatic properties, high optical transparency, low haze and good mechanical properties, in particular a good abrasion resistance.

Abstract: The present invention is drawn to an optical article comprising: (a) a polycarbonate substrate, (b) a non-tintable intermediate coating, and (c) a transparent self-healing outer coating obtained by drying and curing a composition comprising at least one polycarbonate polyol, at least one polyisocyanate, at least one solvent and at least one surfactant.

Abstract: Disclosed are processes for preparing articles having anti-fog properties, comprising providing a substrate having at least one main surface coated with an intermediate coating obtained by applying and at least partially curing an intermediate coating composition comprising at least one monoepoxysilane and/or an hydrolyzate thereof and at least one polyepoxy monomer comprising at least two epoxy groups, forming onto said intermediate coating at least one bi-layer, and curing said at least one bi-layer by heating at a temperature of 150° C. or less at atmospheric pressure and in the absence of added water steam. Also disclosed are articles made and/or makeable by these processes.

Abstract: Disclosed are processes for preparing articles having anti-fog properties, comprising providing a substrate having at least one main surface coated with an intermediate coating obtained by applying and at least partially curing an intermediate coating composition comprising at least one monoepoxysilane and/or an hydrolyzate thereof and at least one polyepoxy monomer comprising at least two epoxy groups, forming onto said intermediate coating at least one bi-layer, and curing said at least one bi-layer by heating at a temperature of 150° C. or less at atmospheric pressure and in the absence of added water steam. Also disclosed are articles made and/or makeable by these processes.

Abstract: Disclosed are processes for preparing articles having anti-fog properties, comprising providing a substrate having at least one main surface coated with an intermediate coating obtained by applying and at least partially curing an intermediate coating composition comprising at least one monoepoxysilane and/or an hydrolyzate thereof and at least one polyepoxy monomer comprising at least two epoxy groups, forming onto said intermediate coating at least one bi-layer, and curing said at least one bi-layer by heating at a temperature of 150° C. or less at atmospheric pressure and in the absence of added water steam. Also disclosed are articles made and/or makeable by these processes.

Abstract: Disclosed are processes for preparing articles having anti-fog properties, comprising providing a substrate having at least one main surface coated with an intermediate coating obtained by applying and at least partially curing an intermediate coating composition comprising at least one monoepoxysilane and/or an hydrolyzate thereof and at least one polyepoxy monomer comprising at least two epoxy groups, forming onto said intermediate coating at least one bi-layer, and curing said at least one bi-layer by heating at a temperature of 150° C. or less at atmospheric pressure and in the absence of added water steam. Also disclosed are articles made and/or makeable by these processes.