Abstract: A photochromic compound represented by General Formula 1, wherein R represents an unsubstituted aliphatic monocyclic ring with 6 or less carbon atoms (including a carbon atom at the 13-position of an indeno-fused naphthopyran), and R1 to R8, B, and B? each independently represent a hydrogen atom or a substituent, provided that one or more of R1 to R8 represent electron-withdrawing groups.

Abstract: A photochromic compound represented by General Formula 1 wherein, R represents a substituted or unsubstituted ring structure which is spirofused with an indeno-fused naphthopyran and has 3 or more and 20 or less carbon atoms (including the carbon atom at the 13-position of the indeno-fused naphthopyran), and R1 to R4, B, and B? each independently represent a hydrogen atom or a substituent.

Abstract: A refraction measuring apparatus measures refractive properties of an eye by two light bundles respectively passing through two apertures, the apparatus including: a first rotational member, rotatably supported about a first rotational center, provided with the two apertures on either side of the first rotational center; a second rotational member, rotatably supported about a second rotational center, provided with a light-transmission portion(s) and a light-shielding portion at different rotational-direction positions.

Abstract: A polymerizable composition for optical components, including an epithio compound (1) having an ether bond and an epithio compound (2) having a thioether bond or a dithioether bond.

Abstract: A technology that makes a change in the amount of aberration in a spectacle lens worn by wearer relative to a change in at least one of the aberration in the eye or spectacle lens. A method for designing a spectacle lens wherein, when a degree of change caused by a physical feature of wearer in at least one of an aberration distribution of an eye of wearer and an aberration distribution of a spectacle lens worn by the wearer is large, a spectacle lens that has an aberration distribution of which rotational asymmetry is weak in a region having a predetermined width and a center at any point on a main meridian of the spectacle lens is obtained as a design solution, and when the degree of the change is small, a spectacle lens of which rotational asymmetry is strong in the region is obtained as a design solution.

Abstract: A method for manufacturing a spectacle lens and a related technique thereof, includes: performing desired marking processing by irradiating one surface of a spectacle lens with laser, the spectacle lens having an object-side surface and an eyeball-side surface each having a different anti-reflection film, the marking processing including: determining an applicable wavelength of the laser to be used; selecting a surface with an anti-reflection film having a relatively low reflectance to the applied wavelength, out of the object-side surface and the eyeball-side surface; and performing laser irradiation to the selected surface using the applied wavelength.

Abstract: There is provided a spectacle lens, including: a base region that causes a light beam incident from an object-side surface to exit from an eyeball-side surface and converge to a predetermined position A on a retina through an eyeball; a plurality of defocus regions having a property of converging a light beam to a position B closer to an object side than the position A, or a position C closer to an opposite side of the position B as seen from the position A; and a transfer region provided at a boundary between the base region and the defocus region to gradually change a curvature between the base region and the defocus region.

Abstract: A method for producing a spectacle lens from a lens material and includes: a marking step of marking an identification mark for identifying the spectacle lens, and a processing information mark which is used to process a lens blank and includes a tray identification 2D code, a tray identification code, a shape line and a position mark by forming a hole or a groove in a convex surface of the lens material by laser; and a concave surface machining processing step of reading the processing information mark, and machining a concave surface of the lens blank based on the read processing information mark.

Abstract: A holding jig which is capable of holding any of optical elements of various shapes or sizes, and free of causing deformation or damage of the optical elements. A holding jig for holding an optical element includes: a base; first, second and third holding parts which hold the periphery of a lens substrate; a first arm to which the first holding part is attached and which is provided to the base swingably about a pivot; a torsion spring biasing the first arm in a first swinging direction such that the first holding part is urged toward the lens substrate; and an arm locking mechanism configured to lock the swinging of the first arm.

Abstract: A method for manufacturing an optical member, and a related technique, the method including: applying desired laser processing to an anti-reflection film formed to coat an optical surface of an optical base material and having a multilayer structure including laminated layers of a low refractive index layer and a high refractive index layer, by irradiating the anti-reflection film with ultrashort pulse laser; and partially removing a predetermined layer including an outermost layer of the multilayer structure, the ultrashort pulse laser having a pulse width of 10 femtoseconds or more and less than 100 picoseconds, the anti-reflection film including a reactive layer that is relatively more reactive to irradiation with the ultrashort pulse laser than other layers included in the multilayer structure, wherein the reactive layer is subjected to the laser processing so as to be visually recognizable by visible light by being at least partially removed.

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: An electronic dimming lens acquired by combining an electronic element for dimming and a lens, the electronic dimming lens including: holes that open on an outer face of the electronic dimming lens and are connected to electrodes for a positive electrode and a negative electrode in the electronic element; and terminal members that are molded to match a shape of the holes and are inserted into the holes, in which the terminal member is electrically connected to the electrodes inside of the hole and has one end part exposed to an opening of the hole. In accordance with this, reliability, durability, and producibility of terminals connected to electrodes of the electronic element for dimming can be configured to be superior.

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 ?m between both the surfaces.

Abstract: A spectacle lens including an antifouling layer which is a condensate of an antifouling agent composition containing: a compound (A) having a silyl group and a fluorinated alkyl group; a compound (B) having a silyl group at one end and a reactive group at the other end; and a chain fluorine compound (C) having no reactive group.

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 method for producing a spectacle lens from a lens material and includes: a marking step of marking an identification mark for identifying the spectacle lens, and a processing information mark which is used to process a lens blank and includes a tray identification 2D code, a tray identification code, a shape line and a position mark by forming a hole or a groove in a convex surface of the lens material by laser; and a concave surface machining processing step of reading the processing information mark, and machining a concave surface of the lens blank based on the read processing information mark.

Abstract: A progressive addition lens and the related technology, the progressive addition lens including a near portion for viewing a near distance, a distance portion for viewing a distance farther than the near distance, and an intermediate portion between the near portion and the distance portion and having a progressive refraction function, in which the transmission astigmatism is added to the near portion and the intermediate portion of the distance portion, the near portion, and the intermediate portion, and in the near portion and the intermediate portion to which the transmission astigmatism is added, the progressive addition lens further includes a portion where an amount of horizontal refractive power is greater than an amount of vertical refractive power after subtracting the refractive power for astigmatism correction.

Abstract: A polymerizable composition for optical components, which can prevent striae while keeping strength for optical components when a thick optical component is produced. A polymerizable composition for optical components is a mixture of a first composition including a polyisocyanate compound (A) and a second composition including a polythiol compound (B1) and a thiol group-containing substance (B2), the composition includes the thiol group-containing substance (B2) showing peak at a position at retention time three minutes or more from a peak of the polythiol compound (B1) in a chromatogram obtained by analyzing the composition by high performance liquid chromatography (HPLC) analysis, and the ratio (A/B1) is 80/100 to 95/100, wherein the equivalent ratio (A/B1) is an equivalent A of the polyisocyanate compound (A) using a weight and group number of the polyisocyanate compound (A) to B1 of the polythiol compound (B1) using a weight and group number of the polythiol compound (B1).

Abstract: There is provided a spectacle lens including a lens substrate, an inorganic layer, and a water-repellent layer in the stated order, and further including a metal-containing layer between the inorganic layer and the water-repellent layer, wherein a metal contained in the metal-containing layer is silver, and one or more metals selected from the group consisting of platinum, gold, palladium, mercury, cadmium, cobalt, nickel, copper, zinc, and titanium.

Abstract: A method for polishing a spectacle lens including a step of preparing a polishing pad provided with a flocking polishing sheet having a flocking part and abrasive grains that are attached to a surface of the flocking part on a polishing surface that comes into contact with a surface to be polished of a resin spectacle lens and a step of polishing the surface to be polished by bringing the surface to be polished into contact with the polishing surface by applying pressure and relatively moving the polishing pad and the spectacle lens while supplying a coolant to the polishing surface.