Abstract:
An aspect of the present invention relates to a method of determining a manufacturing condition of a polythiourethane eyeglass lens obtained via a process of obtaining polythiourethane by polymerization reaction of an iso(thio)cyanate compound and a thiol compound, comprising determining a candidate composition for a starting material mixture and a candidate polymerization reaction condition employed in the polymerization reaction in actual manufacturing; polymerizing the starting material mixture of the candidate composition that has been determined under the candidate polymerization reaction condition to obtain a test sample; testing the obtained test sample by irradiation with a xenon lamp to determine whether or not change into red-like color is present following irradiation with the xenon lamp; and determining a starting material mixture composition and a polymerization reaction condition to be employed in the polymerization reaction in actual manufacturing with the use of a result of the determination as an indicator.
Abstract:
A lens positioning mechanism includes: a member holding unit that has a function of holding a second surface of a lens member having a first surface, which is a convex optical surface, and the second surface, which is an optical surface facing the first surface, and biasing the held lens member toward a side of the first surface; and an attitude control unit that regulates edge positions of a plurality of portions on the first surface of the lens member biased by the member holding unit to position the lens member in a predetermined attitude.
Abstract:
A spectacle optical article and a technology related thereto, the spectacle optical article including an outer surface that is a surface on the object side and an inner surface that is a surface on the eyeball side, and containing glossy particles with particle diameters of 50 to 150 μm between both the surfaces.
Abstract:
A spectacle lens including an antifouling layer which is a condensate of an antifouling agent composition containing: 10 to 70 mass % of a compound (A) having a silyl group and a fluorinated alkyl group; and 30 to 90 mass % of a compound (B) having a silyl group at one end, a reactive group at the other end, and a polysiloxane chain structure.
Abstract:
A monomer for an optical component includes: a compound represented by the formula (1), in which a pH obtained through a pH measurement method below is 4.0 to 7.5. (pH Measurement Method)
80 g of a sample, 80 mL of toluene, and 250 mL of water are mixed together in a liquid separation funnel, an aqueous phase is separated off, and the pH of the aqueous phase is measured.
Abstract:
A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.
Abstract:
An electronic element for electronic light control spectacles, which is combined with a lens and exhibits a light control effect when electric energy is supplied, including substrates, a pair of transparent electrode layers provided on the substrates, and a light control layer provided between the pair of transparent electrode layers, a sealing material that covers at least a part of the transparent electrode layer is provided in a peripheral area outside a light control area in which the pair of transparent electrode layers and the light control layer overlap, and each of the pair of transparent electrode layers has a projecting part extending to the peripheral area, and the projecting part is in contact with the sealing material without other conductive members being interposed therebetween.
Abstract:
A composition for an antifogging film of a spectacle lens, wherein the composition has a viscosity at 15° C. of 20 mPa·s or more and 80 mPa·s or less, and a solid content of 10 mass % or more and 25 mass % or less.