JP2012137646A5

JP2012137646A5 -

Info

Publication number: JP2012137646A5
Application number: JP2010290427A
Authority: JP
Filing date: 2010-12-27
Publication date: 2014-02-20
Anticipated expiration: 2030-12-27

Description

上記目的を達成するための本発明に係る光学フィルタは、透明基板上に積層される複数の構造体を備え、該複数の構造体は、所定の波長領域を吸収する第１の吸収波長領域及び第２の吸収波長領域を有する光吸収構造体と、少なくとも近赤外波長領域の一部を反射して近赤外波長領域の阻止領域へ向かう遷移波長領域を有する第１の反射構造体と、少なくとも紫外波長領域の一部を反射して紫外波長領域の阻止領域に向かう遷移波長領域を有する第２の反射構造体と、を有し、前記光吸収構造体の前記第１の吸収波長領域と前記第１の反射構造体の前記近赤外波長領域の阻止領域へ向かう遷移領域とが重なり、前記光吸収構造体の前記第２の吸収波長領域と前記第２の反射構造体の前記紫外波長領域の阻止領域に向かう遷移領域とが重なることを特徴とする。 An optical filter according to the present invention for achieving the above object, comprises a plurality of structures that are laminated on a transparent substrate, the plurality of structures, a first absorption wavelength region and that absorbs a predetermined wavelength range A light-absorbing structure having a second absorption wavelength region, and a first reflection structure having a transition wavelength region that reflects at least a portion of the near-infrared wavelength region and travels toward the blocking region of the near-infrared wavelength region; A second reflection structure having a transition wavelength region that reflects at least a part of the ultraviolet wavelength region and travels toward a blocking region of the ultraviolet wavelength region, and the first absorption wavelength region of the light absorption structure, A transition region toward the blocking region of the near-infrared wavelength region of the first reflective structure overlaps, and the second absorption wavelength region of the light absorption structure and the ultraviolet wavelength of the second reflection structure child and transition regions overlap toward the blocking regions of the area The features.

また、本発明に係る光学フィルタは、透明基板上に、樹脂層により形成し所定の吸収波長領域を有する光吸収構造体と、複数の無機薄膜を積層し少なくとも近赤外波長領域の一部を反射する少なくとも１つの近赤外光反射構造体と、紫外光反射構造体又は紫外光吸収構造体と、を有し、前記近赤外光反射構造体は、光の透過波長領域から不透過波長領域に遷移する遷移波長領域を有し、前記光吸収構造体の前記吸収波長領域の少なくとも一部は前記遷移波長領域と重なることを特徴とする。 The optical filter according to the present invention includes a light absorption structure formed of a resin layer and having a predetermined absorption wavelength region on a transparent substrate and a plurality of inorganic thin films, and at least a part of the near infrared wavelength region. having at least one and a near infrared light reflecting structure, and ultraviolet light reflecting structure or an ultraviolet absorbing structure, wherein the near-infrared light reflecting structure is opaque wavelength from the transmission wavelength region of light reflected It has a transition wavelength region that transitions to a region, and at least a part of the absorption wavelength region of the light absorption structure overlaps with the transition wavelength region.

Claims

Comprising a plurality of structures laminated on a transparent substrate;
The plurality of structures are:
A light absorption structure having a first absorption wavelength region and a second absorption wavelength region that absorb a predetermined wavelength region;
A first reflective structure having a transition wavelength region that reflects at least a portion of the near infrared wavelength region and travels toward a blocking region of the near infrared wavelength region;
A second reflective structure having a transition wavelength region that reflects at least a part of the ultraviolet wavelength region and travels toward a blocking region of the ultraviolet wavelength region, and
The first absorption wavelength region of the light absorption structure and the transition region toward the blocking region of the near infrared wavelength region of the first reflection structure overlap,
The optical filter, wherein the second absorption wavelength region of the light absorption structure and the transition region toward the blocking region of the ultraviolet wavelength region of the second reflection structure overlap.

On a transparent substrate
A light-absorbing structure formed of a resin layer and having a predetermined absorption wavelength region;
At least one near-infrared light reflecting structure that stacks a plurality of inorganic thin films and reflects at least part of the near-infrared wavelength region;
Has a UV light reflecting structure or an ultraviolet absorbing structure, the,
The near-infrared light reflecting structure has a transition wavelength region that transitions from a transmission wavelength region to a non-transmission wavelength region,
An optical filter, wherein at least part of the absorption wavelength region of the light absorption structure overlaps with the transition wavelength region.

The optical filter according to claim 2 , wherein the ultraviolet light reflecting structure is disposed with the light absorbing structure sandwiched between the near infrared light reflecting structure.

The optical filter according to any one of claims 1 to 3 , wherein at least one of the near-infrared light reflecting structures has an ultraviolet shielding function.

The optical filter according to claim 2 or 3 wherein the ultraviolet light reflecting structure is characterized in that a plurality of laminated inorganic thin film.

3. The optical filter according to claim 2 , wherein the ultraviolet light absorbing structure is formed of a resin layer in which an ultraviolet absorber that absorbs ultraviolet rays is dispersed.

The optical filter according to any one of claims 2 to 6 , wherein ultraviolet light incident on the light absorbing structure from any surface is shielded with respect to the transparent substrate.

An imaging optical system, the optical filter according to claim 1 to 7, an imaging apparatus characterized by comprising a imaging device for converting light incident on the imaging optical system passes through the optical filter into an electric signal .

The image pickup apparatus according to claim 8 , wherein the light absorption structure of the optical filter is disposed closer to the image pickup element than the near infrared light reflection structure having the transition wavelength region.

During said imaging optical system, an imaging apparatus according to claim 8 or 9 with a drive member for driving the optical filter.