WOUND BODY

• Main Authors: MORIMOTO KENSUKE, HATANAKA NOBUYUKI, NADA TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 17.05.2024
• Subjects: ADVERTISING; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRICITY; LABELS OR NAME-PLATES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SEALS; SIGNS; TRANSPORTING

To provide a wound body with which it is possible to reduce dispersion in the optical characteristics of sheet bodies cut out from a long-sized laminate.SOLUTION: A light absorption anisotropic layer 11 is formed from a composition that includes a dichroic dye and a liquid crystal compound, has an absorption axis in the direction perpendicular to a plane of the light absorption anisotropic layer 11, and satisfies the relationship of formula (I). Formula (I): Axmax(z=50°)/Axmin(z=50°)≤1.12 [In formula (I), Axmax(z=50°) and Axmin(z=50°) respectively represent the absorbance of absorption maximum wavelength of the light absorption anisotropic layer 11 in the wavelength range of 380 nm to 780 nm inclusive, and also represent maximum and minimum values when the absorbance Ax(z=50°) of linearly polarized light that oscillates in the direction of axis x when the light absorption anisotropic layer 11 is rotated 50° around an axis y, was measured at 10 measurement points set to the light absorption anisotropic layer 11 included in a laminate 1.]SELECTED DRAWING: Figure 1 【課題】長尺の積層体から切り出した枚葉体の光学特性のばらつきを低減することができる巻回体を提供する。【解決手段】光吸収異方性層１１は、二色性色素と液晶性化合物とを含む組成物から形成され、光吸収異方性層１１の面に対して鉛直方向に吸収軸を有し、下記式（Ｉ）の関係を満たす。Ａｘmax（ｚ＝５０°）／Ａｘmin（ｚ＝５０°）≦１．１２（Ｉ）［式（Ｉ）中、Ａｘmax（ｚ＝５０°）及びＡｘmin（ｚ＝５０°）は、それぞれ、光吸収異方性層１１の波長３８０ｎｍ以上７８０ｎｍ以下の範囲における吸収極大波長の吸光度であって、ｙ軸を回転軸として、光吸収異方性層１１を５０°回転させたときのｘ軸方向に振動する直線偏光の吸光度Ａｘ（ｚ＝５０°）を、積層体１に含まれる光吸収異方性層１１に設定した１０点の測定点について測定したときの最大値及び最小値である。【選択図】図１