OPTICAL MEMBER
The present invention provides an optical member having the function of selectively transmitting light of any different visible light wavelength and having low incident angle dependency, and a sensing device and an imaging apparatus using the optical members. The optical member has at least one abso...
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Sprache: | eng ; kor |
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Zusammenfassung: | The present invention provides an optical member having the function of selectively transmitting light of any different visible light wavelength and having low incident angle dependency, and a sensing device and an imaging apparatus using the optical members. The optical member has at least one absorbing layer containing resin and an absorbing agent having an absorption maximum in the range of 380 to 725 nm in a wavelength. The absorbing layer has at least three blocking bands in the range of 380 to 725 nm in a wavelength. The maximum transmittance of each of the blocking bands is equal to or less than 15 %. The width of the blocking band on the longest wavelength side is equal to or greater than 50 nm. The optical member has a transmission band between respective blocking bands. The minimum transmittance of each transmission band is equal to or greater than 30 %.
임의의 다른 가시광 파장의 광을 선택적으로 투과시키는 기능을 가지며, 또한 입사각 의존성이 낮은 광학 부재 및 해당 광학 부재를 사용한 센싱 장치나 촬상 장치 등을 제공한다. 파장 380 내지 725nm의 범위에 흡수 극대를 갖는 흡수제와 수지를 함유하는 흡수층을 적어도 1층 갖는 광학 부재로서, 흡수층이 광의 파장 380 내지 725nm의 범위에 있어서 적어도 3개 이상의 저지대를 갖고, 각 저지대의 최대 투과율이 15% 이하이고, 가장 장파장측의 저지대의 폭이 50nm 이상이고, 각 저지대의 사이에 투과대를 갖고, 각 투과대의 최소 투과율이 30% 이상인 광학 부재. |
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