Abstract: Provided is a polarizing lens which is excellent in terms of impact resistance, outer appearance and prevention of eye strain and which exhibits little variation in color tone and transmittance during formation. The polarizing lens is formed by stretching a polyvinyl alcohol film and dyeing it with a dichroic dye, bonding an aromatic polycarbonate sheet to both surfaces of the film by means of an adhesive layer, and then inserting a polarizing sheet, bent to have a spherical or aspherical surface, into a mold, and injecting aromatic polycarbonate thereto, wherein the area in which the dichroic dye seeps from the surface of the polyvinyl alcohol film is not more than a quarter of the thickness of the polyvinyl alcohol film.

Abstract: Provided is a polarizing lens which is excellent in terms of impact resistance, outer appearance and prevention of eye strain and which exhibits little variation in color tone and transmittance during formation. The polarizing lens is formed by stretching a polyvinyl alcohol film and dyeing it with a dichroic dye, bonding an aromatic polycarbonate sheet to both surfaces of the film by means of an adhesive layer, and then inserting a polarizing sheet, bent to have a spherical or aspherical surface, into a mold, and injecting aromatic polycarbonate thereto, wherein the area in which the dichroic dye seeps from the surface of the polyvinyl alcohol film is not more than a quarter of the thickness of the polyvinyl alcohol film.

Abstract: Provided is a polarizing lens that is excellent in terms of impact resistance, prevention of eye strain, and a small variation of color tone or transparency or both. A sunglass polarizing lens that is formed by laminating a transparent protective sheet via an adhesive layer to each surface of a polarizing film that is made from polyvinyl alcohol and that is stretched and stained with dichroic organic dye; curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet; and injecting a transparent resin for a lens onto a surface of the polarizing sheet, wherein the polarizing film is stained by combined dichroic organic dyes so that the dichroic ratio of the film is within the range of from 5 to 14.

Abstract: A polarizing film is produced by swelling a polyvinyl alcohol film with water, uniaxially stretching it, dyeing it with an organic dichroic dye, and drying it, wherein a dichroic organic dye composition includes a combination of organic dyes having a dichroic ratio of 13 or higher used in an amount to keep the degree of polarization at 90% or more, and wherein the coloration dye composition comprises a combination of dyes having extremely low dichroic ratios of 4 or less or substantially having no dichroic ratio, laminating at least one layer of a transparent plastic sheet onto at least both sides of the polarizing film, curving the polarizing sheet so as to impart spherical or aspherical surfaces thereto to obtain a polarizing and injecting a transparent resin to the concave surface of the curved polarizing sheet to obtain an injection polarizing lens.

Abstract: Provided is a spherical or aspherical polarized mirrored glasses lens that substantially prevents the appearance of reflections caused by reflection from the mirrored surface, has a high transmittance, and with the use of a colored absorption-polarization film layer, allows arbitrary selection of the color of the field of view of the sunglasses user and the color of the lens as seen by others. A polarized mirrored glasses lens is fabricated, said lens being characterized by having, in order from the light-incidence side, at least a reflection-polarization film layer and an absorption-polarization film layer, and further characterized in that: the transmission axes of said layers are aligned; and the light-incidence side is a convex spherical or aspherical surface.

Abstract: Provided is a polarizing lens that is excellent in terms of impact resistance, prevention of eye strain, and a small variation of color tone or transparency or both. A sunglass polarizing lens that is formed by laminating a transparent protective sheet via an adhesive layer to each surface of a polarizing film that is made from polyvinyl alcohol and that is stretched and stained with dichroic organic dye; curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet; and injecting a transparent resin for a lens onto a surface of the polarizing sheet, wherein the polarizing film is stained by combined dichroic organic dyes so that the dichroic ratio of the film is within the range of from 5 to 14.

Abstract: A polarizing film is produced by swelling a polyvinyl alcohol film with water, uniaxially stretching it, dyeing it with an organic dichroic dye, and drying it, wherein a dichroic organic dye composition includes a combination of organic dyes having a dichroic ratio of 13 or higher used in an amount to keep the degree of polarization at 90% or more, and wherein the coloration dye composition comprises a combination of dyes having extremely low dichroic ratios of 4 or less or substantially having no dichroic ratio, laminating at least one layer of a transparent plastic sheet onto at least both sides of the polarizing film, curving the polarizing sheet so as to impart spherical or aspherical surfaces thereto to obtain a polarizing and injecting a transparent resin to the concave surface of the curved polarizing sheet to obtain an injection polarizing lens.

Abstract: Provided is a polarizing lens which is excellent especially in terms of impact resistance, appearance, and prevention of eye strain and which has high precision of the surface shape. The polarizing lens is formed by laminating a sheet of an aromatic polycarbonate through an adhesive layer to each surface of a film having polarizing properties, curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet, inserting the polarizing sheet into a mold, and injecting an aromatic polycarbonate, wherein the polarizing sheet is obtained through the laminating so that the stretch axis of one of the aromatic-polycarbonate sheets is perpendicular to the absorption axis of the film having the polarizing properties.

Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.

Abstract: Provided is a polarizing lens which is excellent in terms of impact resistance, outer appearance and prevention of eye strain and which exhibits little variation in color tone and transmittance during formation. The polarizing lens is formed by stretching a polyvinyl alcohol film and dyeing it with a dichroic dye, bonding an aromatic polycarbonate sheet to both surfaces of the film by means of an adhesive layer, and then inserting a polarizing sheet, bent to have a spherical or aspherical surface, into a mold, and injecting aromatic polycarbonate thereto, wherein the area in which the dichroic dye seeps from the surface of the polyvinyl alcohol film is not more than a quarter of the thickness of the polyvinyl alcohol film.

Abstract: Provided is a spherical or aspherical polarized mirrored glasses lens that substantially prevents the appearance of reflections caused by reflection from the mirrored surface, has a high transmittance, and with the use of a colored absorption-polarization film layer, allows arbitrary selection of the color of the field of view of the sunglasses user and the color of the lens as seen by others. A polarized mirrored glasses lens is fabricated, said lens being characterized by having, in order from the light-incidence side, at least a reflection-polarization film layer and an absorption-polarization film layer, and further characterized in that: the transmission axes of said layers are aligned; and the light-incidence side is a convex spherical or aspherical surface.

Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.

Abstract: Provided is a polarizing lens which is excellent especially in terms of impact resistance, appearance, and prevention of eye strain and which has high precision of the surface shape. The polarizing lens is formed by laminating a sheet of an aromatic polycarbonate through an adhesive layer to each surface of a film having polarizing properties, curving the resultant laminate so as to impart spherical or aspherical surfaces thereto to obtain a polarizing sheet, inserting the polarizing sheet into a mold, and injecting an aromatic polycarbonate, wherein the polarizing sheet is obtained through the laminating so that the stretch axis of one of the aromatic-polycarbonate sheets is perpendicular to the absorption axis of the film having the polarizing properties.

Abstract: The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.

Abstract: A small-sized and low-cost wavelength division multiplexer having little insertion loss, little polarization dependence and a broad wavelength bandwidth, the wavelength division multiplexer adopting a grating configuration in which an incident light is retroreflected, exit lights from respective grooves are enhanced by interference effect in the incident direction of the light, wave surfaces of evanescent waves in the grooves are parallel to the normal direction of the grating and phases of the evanescent waves in the respective grooves agree with each other. The wavelength division multiplexer has high diffraction efficiency in each of TM and TE polarized lights at a several-order diffraction order and accordingly has a broad wavelength bandwidth and remarkably low polarization dependence.

Abstract: A small-sized and low-cost wavelength division multiplexer having little insertion loss, little polarization dependence and a broad wavelength bandwidth,

Abstract: There is provided a magnetron comprising a cold cathode having an electron emitting member which is formed linearly or as a plane on a substrate to emit electrons a subdivided anode disposed oppositely in parallel with the electron emitting member, the subdivided anode having cavity resonators formed therein at the side of the cold cathode, and a magnet which producing a magnetic field lying at right angles to an electric field applied between the cold cathode and the subdivided anode. There is also provided a microwave oven for dielectric-heating a substance to be heated by using the magnetron as a microwave supply source.

Abstract: A metal surface plasmon is excited in a multi-layered film composed of thin metal films and a thin dielectric film, by light having a propagation constant larger than that of the incident light emitted from an optical component such as a prism. Due to an extremely strong alternating electric field produced by the electric field enhancement effect of the metal surface plasmon, a harmonic is generated from a nonlinear optical crystal.