ADHESIVE SHEET
To provide an adhesive sheet that has wavelength selectivity and blocks light in a broad range of visible light regions but allows passage of infrared light.SOLUTION: The present invention relates to an adhesive sheet that contains a base polymer and a pigment, and has a light transmittance of 25% o...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide an adhesive sheet that has wavelength selectivity and blocks light in a broad range of visible light regions but allows passage of infrared light.SOLUTION: The present invention relates to an adhesive sheet that contains a base polymer and a pigment, and has a light transmittance of 25% or less at a wavelength of from 380 to 600 nm, while having a light transmittance of 60% or more at a wavelength of from 800 to 2,500 nm. In the adhesive sheet, a change in light transmittance in the wavelength range of 600-800 nm as shown in the following formula is 0.1 %/nm or greater: [Change in light transmittance (%/nm)=(Light transmittance at 800 nm-Light transmittance at 600 nm)/200].SELECTED DRAWING: None
【課題】本発明は、広範囲の可視光域の光を遮光し、かつ赤外光は透過する、波長選択性を有する粘着シートを提供することを目的とする。【解決手段】本発明は、ベースポリマーおよび顔料を含む粘着剤層を備える、粘着シートであって、380〜600nmの波長の光透過率が25%以下であり、800〜2500nmの波長の光透過率が60%以上であり、下記式で示される、600〜800nmの波長域における光透過率変化量が0.1%/nm以上である、粘着シートに関する。光透過率変化量(%/nm)=(800nmの波長の光透過率−600nmの波長の光透過率)/200【選択図】なし |
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