OPTICAL FILTER

The present invention pertains to an optical filter comprising, in this order, a dielectric multilayer film 1, a base material that includes a near-infrared absorbing glass and a resin film, and a dielectric multilayer film 2, wherein the resin film includes a near-infrared absorbing pigment and a r...

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Bibliographic Details
Main Authors SHIONO Kazuhiko, SAKAGAMI Takahiro, NAGATA Takashi
Format Patent
LanguageEnglish
French
Japanese
Published 04.07.2024
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Summary:The present invention pertains to an optical filter comprising, in this order, a dielectric multilayer film 1, a base material that includes a near-infrared absorbing glass and a resin film, and a dielectric multilayer film 2, wherein the resin film includes a near-infrared absorbing pigment and a resin, and the near-infrared absorbing glass is a fluorophosphate glass that includes P, Cu and F, said optical filter satisfying all of specific spectral characteristics (i-1) through (i-5). La présente invention concerne un filtre optique comprenant, dans cet ordre, un film multicouche diélectrique 1, un matériau de base qui comprend un verre absorbant le proche infrarouge et un film de résine, et un film multicouche diélectrique 2, le film de résine comprenant un pigment absorbant le proche infrarouge et une résine, et le verre absorbant le proche infrarouge étant un verre de fluorophosphate qui comprend P, Cu et F, ledit filtre optique satisfaisant à toutes les caractéristiques spectrales spécifiques (i-1) à (i-5). 本発明は、誘電体多層膜1と、近赤外線吸収ガラスおよび樹脂膜を有する基材と、誘電体多層膜2とをこの順に備えた光学フィルタであって、前記樹脂膜は、近赤外線吸収色素および樹脂を含有し、前記近赤外線吸収ガラスが、P、Cu、及びFを含有するフツリン酸ガラスであり、前記光学フィルタが特定の分光特性(i-1)~(i-5)をすべて満たす光学フィルタに関する。
Bibliography:Application Number: WO2023JP45813