Abstract: An object of the present invention is to improve uneven coloring by polarization color due to birefringence of a polarization optical article. Disclosed is a polarization optical article in which uneven coloring by polarization color has been improved, the polarization optical article being a multi-layered polarization optical article including at least a linear polarization functional portion, a retardation functional portion and a back-up resin portion, characterized in that the linear polarization functional portion, the retardation functional portion and the back-up resin portion are arranged in order from an objective side toward an ocular side. The linear polarization functional portion is, for example, a linear polarizer, the retardation functional portion is, for example, a retardation sheet, and the retardation functional portion has, for example, a retardation of 1,000 nm or more. The back-up resin is a polycarbonate resin, a polyamide resin or the like.

Abstract: A fog-resistant structure and a protective device for eyes is configured such that a transparent conductive film is formed on one surface of a lens or shield, a linear electrode is provided on upper and lower portions of the surface of the lens or shield so that each of a central region and opposite side regions of the lens or shield has substantially equal spacing between the upper and lower linear electrodes. Thus each region of the lens or shield has no difference in temperature without regulating power supplied to the transparent conductive film, thereby eliminating wasted power consumption and allowing even a structure using a battery as the power supply to have much longer available time.

Abstract: An object of the present invention is to improve uneven coloring by polarization color due to birefringence of a polarization optical article. Disclosed is a polarization optical article in which uneven coloring by polarization color has been improved, the polarization optical article being a multi-layered polarization optical article including at least a linear polarization functional portion, a retardation functional portion and a back-up resin portion, characterized in that the linear polarization functional portion, the retardation functional portion and the back-up resin portion are arranged in order from an objective side toward an ocular side. The linear polarization functional portion is, for example, a linear polarizer, the retardation functional portion is, for example, a retardation sheet, and the retardation functional portion has, for example, a retardation of 1,000 nm or more. The back-up resin is a polycarbonate resin, a polyamide resin or the like.

Abstract: A circularly polarizing plate with a thermally adhering function imparted thereto, a circularly polarizing lens which is reinforced with a backup resin, and is distorted with difficulty, and circularly polarizing glasses. Also provided is a clockwise or counterclockwise circularly polarizing plate including a multilayered circularly polarizing plate having at least a phase difference functional part, a linear polarizing functional part, and a thermally adhering functional part which thermally adheres to a backup resin. The phase difference functional part is arranged on one side of the linear polarizing functional part, and the thermally adhering functional part is arranged on another side. Also provided is a clockwise or counterclockwise circularly polarizing lens, which is a bending-processed product of the above circularly polarizing plate.

Abstract: A fog-resistant structure and a protective device for eyes is configured such that a transparent conductive film is formed on one surface of a lens or shield, a linear electrode is provided on upper and lower portions of the surface of the lens or shield so that each of a central region and opposite side regions of the lens or shield has substantially equal spacing between the upper and lower linear electrodes. Thus each region of the lens or shield has no difference in temperature without regulating power supplied to the transparent conductive film, thereby eliminating wasted power consumption and allowing even a structure using a battery as the power supply to have much longer available time.

Abstract: The synthetic resin lens has a function to generate heat by selectively absorbing infrared rays with wavelengths of 780 to 3000 nm. The synthetic resin lens includes an infrared absorber. Selective absorption of infrared rays allows the synthetic resin lens itself to generate heat and thus the lens of the present invention has the same function as being electrically heated to prevent fogging.

Abstract: An object of the present invention is to provide a polarizing laminate which is resistant to impact, has the high polarization degree, hardly causes a solvent crack, and hardly causes a fine crack even when perforation-processed, for example, goggles, sunglasses, prescription sunglasses, and shields which are resistant to impact, have higher stability, and can effectively prevent glare. There is provided a polarizing laminate comprising two protective sheets having approximately the same thickness, and a polarizer sheet held by them, wherein a protective sheet and a polarizer sheet are adhered, the protective sheet is any of a polyamide-based resin sheet, and a polyurethane-based resin sheet, and the laminate has the function as an optical lens.

Abstract: The synthetic resin lens has a function to generate heat by selectively absorbing infrared rays with wavelengths of 780 to 3000 nm. The synthetic resin lens includes an infrared absorber. Selective absorption of infrared rays allows the synthetic resin lens itself to generate heat and thus the lens of the present invention has the same function as being electrically heated to prevent fogging.

Abstract: A double lens includes a front lens member, a back lens member and a gasket. A back curve side of the front lens member and a front curve side of the back lens member are contraposed in parallel, and fixed together with the gasket, at least one of the back curve side of the front lens member and the front curve side of the back lens member has an antifogging film which is formed avoiding part of a gasket bonding area. This double lens provides goggles or a shield in which fogging is less likely to be generated, the gasket is less likely to be separated, and the front curve side of the front lens member is less likely to be damaged.