OPTICAL FILTER AND IMAGING DEVICE
    7.
    发明申请
    OPTICAL FILTER AND IMAGING DEVICE 审中-公开
    光学滤光片和成像装置

    公开(公告)号:US20170066933A1

    公开(公告)日:2017-03-09

    申请号:US15355190

    申请日:2016-11-18

    摘要: An optical filter includes an absorption layer containing a near-infrared absorbing dye with an absorption characteristic in dichloromethane satisfying (i-1) to (i-3). (i-1) In an absorption spectrum of a wavelength of 400 to 800 nm, there is a maximum absorption wavelength λmax in 670 to 730 nm. (i-2) Between a maximum absorption coefficient ∈A of light with a wavelength of 430 to 550 nm and a maximum absorption coefficient ∈B of light with a wavelength of 670 to 730 nm, the following relational expression: ∈B/∈A≧65 is established. (i-3) In a spectral transmittance curve, the difference between a wavelength λ80 with which the transmittance becomes 80% on a shorter wavelength side than the maximum absorption wavelength with the transmittance at the maximum absorption wavelength λmax set to 10% and the maximum absorption wavelength λmax is 65 nm or less.

    摘要翻译: 光学滤光器包括含有满足(i-1)至(i-3)的二氯甲烷中具有吸收特性的近红外吸收染料的吸收层。 (i-1)在波长为400〜800nm的吸收光谱中,在670〜730nm具有最大吸收波长λmax。 (i-2)在波长为430〜550nm的光的最大吸收系数∈A和波长为670〜730nm的光的最大吸收系数∈B之间,关系式为:∈B/∈A ≥65建立。 (i-3)在光谱透射率曲线中,在比最大吸收波长λmax设定为最大吸收波长λmax的最大吸收波长为短的波长侧的透射率变为80%的波长λ80与最大吸收波长λmax的最大值 吸收波长λmax为65nm以下。