Optical film and manufacturing method thereof

专利名称：Optical film and manufacturing method

thereof

发明人：齊藤 之人,柏木 大助申请号：JP2018559134申请日：20171221公开号：JP6713062B2公开日：20200624

摘要：Provided are an optical film in which a wavelength shift depending on a viewingangle in a cholesteric liquid crystal layer is suppressed, and a method for producing thesame. The first region having the first film thickness and the second region having thesecond film thickness smaller than the first film thickness have a period of 0.5 μm to 2.0μm in at least one direction in the plane. Alternatingly arranged at P, the film thicknessdifference between the first film thickness and the second film thickness is 0.2 μm to 1.0μm, and the spiral of the cholesteric phase in the first region and the second region Theoptical film includes cholesteric liquid crystal layers having different pitches.

申请人：富士フイルム株式会社

地址：東京都港区西麻布２丁目２６番３０号

国籍：JP

代理人：特許業務法人太陽国際特許事務所

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