LAMINATE BODY AND OPTICAL FILTER

• Main Authors: KANG CHUN SIK, LEE HO SUNG, JI CHOON WOO, JEONG JUN HO, HWANG SUNG MIN, YANG SEON HO, SONG TAE JIN
• Format: Patent
• Language: English; Japanese
• Published: 16.01.2024
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

To provide a laminate body and an imaging device which have a high transmission for visible light and can obtain a sharp visible light beam transmission band while accurately and efficiently blocking ultraviolet rays near a short wavelength region of a visible beam of light and infrared rays in a long wavelength region of a visible beam of light, and also can prevent a flare phenomenon.SOLUTION: The laminate body includes a near-infrared ray absorption base material and an optical absorption layer, and the average transmission of light in a 720-780nm wavelength region is equal to 1% or smaller than 1%. The transmittance of the laminate body to light with a wavelength of 750nm may be 1% or smaller than 1%.SELECTED DRAWING: Figure 14 【課題】可視光線の透過率が高く、可視光線の短波長領域近傍の紫外線と可視光線の長波長領域の赤外線を効率的かつ正確に遮断しつつ、シャープな可視光線透過バンドを得ることができ、フレア（ｆｌａｒｅ）現象を防止できる積層体および撮像装置を提供することを目的とする。【解決手段】近赤外線吸収ガラス基材および光吸収層を含み、７２０～７８０ｎｍの波長領域の光に対する平均透過率が１％以下である積層体。前記積層体は、７５０ｎｍの波長の光に対する透過率が１％以下であってもよい。【選択図】図１４