JP2012137651A5 - - Google Patents

Description

In order to achieve the above object, an optical filter according to the present invention includes a transparent substrate made of an organic material , a light absorption structure on the transparent substrate, and a near infrared layer in which an inorganic thin film is laminated on the light absorption structure. In an optical filter having a light reflection structure, the light absorption structure is an organic-inorganic hybrid binder, the light absorption structure formed from the organic-inorganic hybrid binder, and the transparent substrate formed from an organic material, And the adhesion interface is formed between the said near-infrared-light reflective structures formed from the inorganic material, respectively, It is characterized by the above-mentioned.

Claims (9)

An optical filter comprising: a transparent substrate made of an organic material ; a light absorbing structure on the transparent substrate ; and a near-infrared light reflecting structure in which an inorganic thin film is laminated on the light absorbing structure. The body is an organic-inorganic hybrid binder, the light absorbing structure formed from the organic-inorganic hybrid binder, the transparent substrate formed from an organic material, and the near-infrared light reflecting structure formed from an inorganic material An optical filter characterized in that an adhesive interface is formed between the bodies .   The optical filter according to claim 1, wherein the inorganic component is a monomer having a siloxane bond. The organic-inorganic hybrid binder is a copolymer polymer composed of an organic monomer and a monomer containing an inorganic component, and the organic monomer includes at least a monomer of the same system as the monomer constituting the transparent substrate. Item 3. The optical filter according to Item 1 or 2. 4. The optical filter according to claim 1, wherein the light absorption structure has a water vapor transmission rate of 3 g / m ² · day or less.   The at least one of the near-infrared light reflecting structures has a transition wavelength region that transitions from a transmission wavelength region to a non-transmission wavelength region between wavelengths of 600 to 750 nm. The optical filter according to claim 1. The light absorbing structure is formed by mixing a light absorbing dye having an absorption wavelength region in at least the transition wavelength region of the near infrared light reflecting structure in the organic-inorganic hybrid binder. 5. The optical filter according to 5.   The optical filter according to claim 1, wherein the near-infrared light reflecting structure has an infrared ray or ultraviolet ray shielding function.   A diaphragm blade that forms an opening through which light passes, and the optical filter according to any one of claims 1 to 7 that restricts the amount of light flux that passes through the opening, and passes through the optical filter. An imaging optical system comprising: an imaging element that converts the processed light into an electrical signal.   The light absorption structure of the optical filter has a transition wavelength region that transitions from a transmission wavelength region to a non-transmission wavelength region between wavelengths of 600 to 750 nm and the imaging element. The imaging optical system according to claim 8, wherein the imaging optical system is arranged.