Abstract: Provided is an eyeglass lens configured to cause rays that have entered from an object-side surface to be emitted from an eyeball-side surface and cause the emitted rays to converge at a predetermined position A. The eyeglass lens includes a lens base material having a plurality of base material convex portions on at least one of the object-side surface and the eyeball-side surface, and the eyeglass lens has a configuration for suppressing stray light rays that do not pass through the vicinity of the predetermined position A or the vicinity of the position B that is closer to the object than the predetermined position A is.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the base material convex portions 6. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the base material convex portions 6 are provided is an approximate shape of the base material convex portions configured to cause rays that have entered the eyeglass lens 1 to converge at a position B that is closer to the object than the predetermined position A is.

Abstract: Provided are a method for manufacturing an eyeglass lens that includes a lens substrate having a plurality of substrate protruding portions that protrude from a substrate base portion on a surface of the lens substrate and a coating film provided so as to cover the plurality of substrate protruding portions, the outermost surface of the eyeglass lens having a plurality of convex portions and concave portions, the method including forming the coating film by immersing the lens substrate in a coating film liquid, pulling up the lens substrate, and drying the coating film liquid on the lens substrate while or after the coating film liquid flows under its own weight, and technology related thereto.

Abstract: Provided are [1] a coating composition containing inorganic oxide particles (A), an epoxy compound (b1) having an organosilane moiety, a polyglycerol polyglycidyl ether (b2) having three or more epoxy groups, and a photocationic polymerization initiator (C), [2] a spectacle lens including a hard coat layer obtainable by curing the coating composition described in [1] above and a substrate, and [3] a method for producing a spectacle lens, including a step of applying the coating composition described in [1] above onto a substrate and a step of curing the applied coating composition by irradiation with light.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens substrate 2 having a plurality of substrate convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the substrate convex portions 6. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the substrate convex portions 6 are provided is an approximate shape of the substrate convex portions configured to cause rays that have entered the eyeglass lens 1 to converge at a position B that is closer to the object than the predetermined position A is.

Abstract: Provided are an eyeglass lens that includes a lens substrate having a plurality of substrate protruding portions that protrude from a substrate base portion on a surface of the lens substrate and a coating film provided so as to cover the plurality of substrate protruding portions, the outermost surface of the eyeglass lens having a plurality of convex portions and concave portions, in which the eyeglass lens has a stray light ratio of 30% or less, and technology related thereto.

Abstract: Provided are an eyeglass lens that includes a lens substrate having a plurality of substrate protruding portions that protrude from a substrate base portion on a surface of the lens substrate and a coating film provided so as to cover the plurality of substrate protruding portions, the outermost surface of the eyeglass lens having a plurality of convex portions and concave portions, in which the thickness of the coating film varies over the surrounding regions of the substrate protruding portions, and technology related thereto.

Abstract: Provided are a spectacle lens and a technique associated therewith, the spectacle lens including: an object-side surface and an eyeball-side surface; a first refractive region having a first refractive power based on a prescription for correcting a refractive error of an eye; and a second refractive region having a refractive power different from the first refractive power, the second refractive region having a function of forming a focal point at a position other than a retina of the eye so as to suppress progression of the refractive error of the eye, wherein an interface portion is disposed inside the spectacle lens, the interface portion includes a base portion, and convex portions protruding from the base portion, or concave portions recessed from the base portion, the function of the second refractive region is exerted by using mutually different respective refractive indexes of two types of members sandwiching the interface portion therebetween, and the convex portions or the concave portions, and an o

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4 and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the base material convex portions 6, in which convex portions present on the outermost surface of the eyeglass lens 1 located on a side on which the base material convex portions 6 are provided and the base material convex portions 6 have common light ray convergence properties.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the base material convex portions 6. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the base material convex portions 6 are provided is an approximate shape of the base material convex portions configured to cause rays that have entered the eyeglass lens 1 to converge at a position B that is closer to the object than the predetermined position A is.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4 and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and the eyeglass lens 1 has a configuration for suppressing stray light rays that do not pass through the vicinity of the predetermined position A or the vicinity of the position B that is closer to the object than the predetermined position A is.

Abstract: Provided is a method for manufacturing a spectacle lens, wherein: the spectacle lens includes a lens substrate having microprotrusions on at least one surface, and a coating film formed on the surface of the lens substrate that has the microprotrusions; and the method includes forming the coating film by applying an application liquid, through spin-coating, to the surface of the lens substrate that has the microprotrusions.

Abstract: Provided are [1] a coating composition containing inorganic oxide particles (A), an epoxy compound (b1) having an organosilane moiety, a polyglycerol polyglycidyl ether (b2) having three or more epoxy groups, and a photocationic polymerization initiator (C), [2] a spectacle lens including a hard coat layer obtainable by curing the coating composition described in [1] above and a substrate, and [3] a method for producing a spectacle lens, including a step of applying the coating composition described in [1] above onto a substrate and a step of curing the applied coating composition by irradiation with light.

Abstract: In securing adhesion of a hard coat layer to be formed on the surface of a plastic lens, modification of the lens surface is carried out without using an abrasive, and thereby the cleaning time after modification is shortened. A method for producing a plastic lens includes rubbing to rub the surface of a plastic lens substrate using a removing member, and forming a hard coat layer on the rubbed surface of the plastic lens substrate by a wet surface treatment. The removing member has flexibility, and is made of a hard material that is harder than the material of the surface of the lens substrate or has such constitution that a hard material is fixed on a base material having flexibility.

Abstract: A coating device includes a treatment tank capable of being hermetically-sealed, a substrate holder contained in the treatment tank, a rotation mechanism for rotating the substrate holder, a nozzle for spraying a coating material to a substrate held by the substrate holder, and a partial pressure reducer for reducing partial pressure of a volatile component derived from the coating material inside the treatment tank. The coating device not only prevents dust from entering a treatment tank by sealing the treatment tank hermetically, but also reduces unevenness in thickness of the coating film in the case where the coating treatment is performed to a plurality of lenses.

Abstract: Disclosed is a primer composition that comprises (A) polyurethane resin particles, (B) a urethane-forming monomer and/or oligomer, and (C) oxide microparticles. A method of manufacturing a plastic lens is also disclosed. The method comprises: forming a primer layer using a primer-forming composition comprising (A) polyurethane resin particles, (B) a urethane-forming monomer and/or oligomer, and (C) oxide microparticles on at least one surface of a plastic substrate; and forming a hard coat over said primer layer to obtain a plastic lens sequentially comprising a primer layer and a hard coat on at least one surface of a plastic substrate. A plastic lens comprising a primer layer and a hard coat on at least one surface of a plastic substrate is also disclosed. The primer layer is manufactured by using the primer-forming composition.

Abstract: A modified polyalkyleneimine with satisfactory stability obtained by modifying a polyalkyleneimine through a reaction which is easy to control and does not lower the cation density characteristic of the polyalkyleneimine; and various methods of treatment with the modified polyalkyleneimine. A polyalkyleneimine or a mixture thereof with a polyamine is reacted with a polycationic substrance having a specific structure to produce a modified polyalkyleneimine having a specific structure. The modified polyalkyleneimine can be used as a sludge dehydrator, agent for improving suitability for dehydrating filtration, agent for pretreatment of paper stock, or yield improver to thereby enable an efficient treatment.