The present invention provides an optical film containing an additive. The optical film includes a high concentration portion containing the additive, and a low concentration portion containing the additive at a concentration lower than the high concentration portion. The low concentration portion is provided on both sides of the high concentration portion in a thickness direction of the optical film, and the low concentration portion is provided on both sides of the high concentration portion in a width direction of the optical film.

The resin composition for an optical material according to the present invention has features that it can implement a low retardation value during the preparation of an optical film, by using a polycarbonate composition satisfying a specific condition as a retardation-adjusting agent while using polymethyl methacrylate not containing a monomer having a cyclic structure at the main chain of the polymer.

Provided is an oriented polymeric sheet comprising a photochromic-dichroic material, wherein the sheet exhibits dichroism in an activated state. Also provided is a multilayer composite comprising at least a support layer; and an oriented thermoplastic polymeric sheet having two opposing surfaces and comprising a photochromic-dichroic material. The sheet exhibits dichroism in an activated state. At least one surface of the sheet is connected to at least a portion of the support layer. The present invention also relates to an optical element comprising the multilayer composite. Related methods also are disclosed.

A method to make dyed functional film comprising the steps of providing a soluble polymer material; adding an appropriate solvent to the polymer material to make a soluble polymer solution; providing a soluble dye; adding an appropriate solvent to the dye to make a soluble dye solution; adding the dye solution to the polymer or PVA solution, and introducing the dyed polymer or PVA solution to a solution casting device; removing a thin dyed functional film from the casting device; and letting the dyed functional film dry and solidified.

An optical layered body including: a substrate layer formed of a resin containing a crystallizable polymer A; and a first surface layer formed of a resin containing an amorphous polymer B, wherein a glass transition temperature TgA of the crystallizable polymer A and a glass transition temperature TgB of the amorphous polymer B satisfy TgB>TgA, a crystallization temperature TcA of the crystallizable polymer A and the glass transition temperature TgB of the amorphous polymer B satisfy TcA10 C.TgBTcA60 C., the first surface layer has a plane orientation coefficient P that satisfies P0.01, and a ratio of a thickness of the substrate layer relative to a total thickness of the optical layered body is 25% or more.

Ophthalmic lens comprising an ophthalmic thermoplastic substrate and a light polarizing structure onto said substrate. The ophthalmic lens reduced warpage, in particular when submitted to mechanical, thermal and/or chemical treatment.

There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.

A protective film-attached functional sheet includes a protective film bonded to a functional sheet including aromatic polycarbonate sheets and a functional layer sandwiched between the aromatic polycarbonate sheets, the functional layer being a polyvinyl alcohol polarizing film layer, a photochromic layer, or a combination. The protective film is a polyolefin resin film that includes at least two layers: a base layer formed of a polypropylene having a melting point equal to or higher than a glass transition temperature of the aromatic polycarbonate and an adhesive layer on one surface of the base layer and being a resin composition containing a polyolefin rubber and a polyolefin having a melting point lower than the glass transition temperature but equal to or higher than 15 C. lower than the glass transition temperature; or at least three layers: the aforementioned two layers and an intermediate layer between the base layer and the adhesive layer.

The present invention relates to a resin composition for a polarizer protective film, a polarizer protective film, a polarizing plate including the same, and a preparation method of a polarizing plate, and, more specifically, to a resin composition for a polarizer protective film and a polarizer protective film exhibiting high hardness and excellent properties, a polarizing plate including the same, and a preparation method of a polarizing plate. According to the polarizing plate of the present invention, it can be usefully utilized in various fields because of its excellent hardness, flexibility, and optical properties.

A tinted polarizing optical element includes a pre-manufactured polarizing optical assembly. The polarizing optical assembly includes a first layer provided from a thermoplastic or a thermosetting material; a second layer consisting of a polarizing film; and a third layer provided from a thermoplastic or a thermosetting material, wherein the second layer consisting of the polarizing film is disposed between the first layer and the third layer. The optical element further includes a fourth layer provided from a tinted thermoplastic material, which is disposed over the polarizing optical assembly such that the fourth layer is spaced apart from the polarizing film by at least one layer. The tint of the fourth layer is obtained independently from the polarizing optical assembly. The optical element also includes a fifth layer provided from a crystal thermoplastic material, which has a finished surface to provide a corrective effect.