Mixing absorption type infrared cut-off filter and preparation method thereof

The invention discloses a mixing absorption type infrared cut-off filter and a preparation method thereof. The mixing absorption type infrared cut-off filter comprises a glass substrate; the upper surface of the glass substrate is provided with a coating adhesive layer possessing visible light absorption characteristics; the coating adhesive layer is provided with an antireflection film layer; the lower surface of the glass substrate is provided with an infrared cut-off film layer. The invention provides a visible region high transmittance and infrared band cut-off ultralow angle effect filter, which can realize lower edge aberration in wide angle incidence. 本发明公开了种混合吸收型红外截止滤光片及其制备方法，包括玻璃基板，所述玻璃基板的上表面设有具有可见光吸收特性的涂覆胶层，涂覆胶层上设有减反射膜层，所述玻璃基板的下表面设有红外截止膜层。本发明是种可见光波段高透，红外波段截止的超低角度效应的滤光片，能够实现大角度入射时较低边缘色差。