Optical filter and imaging device

Abstract

To provide an optical filter and an imaging device which improve an incident angle dependence.SOLUTION: An optical filter 10 includes: a translucent member 11 having one main surface 11a and the other main surface 11b facing the one main surface 11a; an infrared light absorption resin member 12 provided in the one main surface 11a of the translucent member 11; and an infrared light shield film 13 provided in the other main surface 11b of the translucent member 11, the infrared light shield film shielding infrared light which passed through the infrared light absorption resin member 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to optical filters and imaging devices. [Background technology]

[0002] Patent Document 1 discloses an optical filter in which an optical multilayer film is provided on a near-infrared cut glass. Patent Document 2 discloses an optical filter that has little incidence angle dependency and can reduce multiple reflections when near-infrared light is incident from an oblique direction, the optical filter comprising a base material having a compound (A) having an absorption maximum at a wavelength of 600 nm or more and less than 750 nm, and a compound (S) having an absorption maximum at a wavelength of 750 nm or more and 1050 nm or less. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2014 / 192670 [Patent Document 2] International Publication No. 2016 / 158461 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide an optical filter and an imaging device with improved spectral transmittance characteristics. [Means for solving the problem]

[0005] The optical filter according to the present disclosure comprises: a light-transmitting member having one main surface and another main surface facing the one main surface; an infrared light absorbing resin member provided on the one main surface of the light-transmitting member; and an infrared light shielding film provided on the other main surface of the light-transmitting member for shielding infrared light transmitted through the infrared light absorbing resin member.

[0006] The imaging device according to the present disclosure comprises: The optical filter; An imaging device comprising: The imaging element is disposed on the one main surface side of the light-transmitting member. Effect of the Invention

[0007] The present disclosure can provide an optical filter and an imaging device with improved spectral transmittance characteristics. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of an embodiment of an imaging device equipped with an optical filter of the present disclosure. [Diagram 2] FIG. 2 is a graph showing the spectral transmittance of the infrared light absorbing resin member of the optical filter of the present disclosure. [Diagram 3] FIG. 3 is a graph showing the spectral transmittance of the infrared light-shielding film of the optical filter of the present disclosure. [Figure 4] FIG. 4 is a graph showing the spectral transmittance of the optical filter of the present disclosure. [Diagram 5] FIG. 5 is a schematic diagram of an embodiment of an imaging device equipped with an optical filter of a comparative example. [Figure 6] FIG. 6 is a graph showing the spectral transmittance of the optical filter of the comparative example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Knowledge that formed the basis of this disclosure] There are known imaging devices equipped with image sensors such as CCD or CMOS image sensors, but these image sensors are sensitive to light in the infrared and ultraviolet wavelength ranges that cannot be detected by the human eye. Optical filters are used to cut out these unnecessary wavelength components.

[0010] For example, Patent Document 1 discloses an optical filter in which an optical multilayer film is provided on near-infrared-cutting glass. In other words, an optical multilayer film is used in combination with near-infrared-absorbing colored glass to sufficiently cut light in the near-infrared region.

[0011] The optical filter using the near-infrared cut glass described in Patent Document 1 has a gentle steepness in transmittance on the long wavelength side, and does not sufficiently block near-infrared light around 700 nm, for example, as shown in Figures 6 to 9 of Patent Document 1. As a result, the near-infrared light enters the imaging element, causing ghosts, flares, and the like.

[0012] In the above optical filter, in order to adequately block light in the near-infrared region where blocking is insufficient, it is possible to appropriately design the optical properties of the optical multilayer film. That is, in the optical filter described in Patent Document 1, it is possible to design the optical multilayer film so as to block light in the vicinity of 700 nm.

[0013] Here, the optical filter composed of the optical multilayer film is a reflection type optical filter that utilizes the refractive index of the multilayer film, unlike an absorption type optical filter. It is known that the optical characteristics shift to the short wavelength side (for example, by about 20 to 30 nm) when the incident angle of light increases. In other words, the optical multilayer film has optical characteristics that reflect light shifted to the shorter wavelength side. Therefore, there is a problem that the light reflected by the shift to the short wavelength side (for example, within the visible range of wavelengths shorter than 700 nm) remains in the imaging device, and the reflected light is detected by the imaging element, causing the above-mentioned ghost, flare, etc.

[0014] As a method for solving the problem of the incidence angle dependency, the optical filter described in Patent Document 2 is disclosed. However, the demand for improving the incidence angle characteristics is not satisfied, and there is still room for further improvement.

[0015] Therefore, the inventors of the present application attempted to solve the above problems by addressing the problems in a new direction, rather than by simply extending the conventional technology, and as a result, have been able to disclose an optical filter and an imaging device that achieve the above-mentioned main object.

[0016] The optical filter and the imaging device of the present disclosure will be described in more detail below. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the explanation and to facilitate understanding by those skilled in the art.

[0017] The applicant provides the accompanying drawings and the following description to enable those skilled in the art to fully understand the present disclosure, and does not intend to limit the subject matter described in the claims. Note that the various elements in the drawings are merely shown as schematic and illustrative examples for understanding the optical filter and imaging device of the present disclosure, and the appearance and dimensional ratios may differ from the actual ones.

[0018] In the present disclosure, the visible light region refers to a wavelength region of 400 nm to 700 nm, the ultraviolet light region refers to a wavelength region of less than 400 nm, and the infrared light region refers to a wavelength region longer than 700 nm. Note that an error of about ±10% is acceptable in any of the wavelength regions.

[0019] In addition, various numerical ranges mentioned in this disclosure are intended to include the lower and / or upper limit values ​​themselves unless otherwise specified. That is, for example, a numerical range such as 1 to 10 can be interpreted as including the lower limit of "1" and the upper limit of "10". In addition, various numerical values ​​may be accompanied by "about" or "approximately", and the terms "about" and "approximately" mean that the range may include a variation of a few percent, for example, ±10%.

[0020] [Optical Filter of the Present Disclosure] An embodiment of the optical filter 10 of the present disclosure will be described with reference to FIG. 1. The optical filter 10 of the present disclosure includes a light-transmitting member 11 having one main surface 11a and the other main surface 11b facing the one main surface, an infrared light absorbing resin member 12 provided on the one main surface 11a of the light-transmitting member 11, and an infrared light shielding film 13 provided on the other main surface 11b of the light-transmitting member 11 and shielding infrared light transmitted by the infrared light absorbing resin member 12. Note that "light shielding" in this specification means that the spectral transmittance is less than 1%. Also, "light transmission" means that the light is not shielded, specifically, that the spectral transmittance is 1% or more, and preferably that the spectral transmittance is 90% or more.

[0021] According to this configuration, unlike near-infrared cut glass of the prior art, it is possible to obtain steep filter characteristics by the infrared light absorbing resin member 12. Furthermore, while the infrared light absorbing resin member 12 of the present disclosure transmits infrared light, the optical filter 10 of the present disclosure includes an infrared light shielding film 13 that shields the infrared light, and therefore ghosts, flares, and the like caused by infrared light can be reduced. Each component will be specifically described below.

[0022] -Translucent member- The light-transmitting member 11 is a member that can transmit at least light in the visible light region. The light-transmitting member 11 may be clear glass (transparent glass) as an example. The use of clear glass can improve the spectral transmittance. In addition, clear glass does not require a material that blocks infrared light and / or a design of thickness, etc., as in IR-cut glass, and can be prepared simply. The light-transmitting member of the present disclosure is not limited to clear glass, and colored glass such as IR-cut glass may be used. As a specific embodiment of the clear glass, known glass such as silicate glass, borosilicate glass, borate glass, and / or phosphate glass may be used.

[0023] The thickness of the substrate is preferably 0.05 mm or more, more preferably 0.1 mm or more, in terms of ensuring strength, and is preferably 5.0 mm or less, more preferably 1.0 mm or less, in terms of thinning for accommodation in an imaging device. In other words, it can be made thinner than conventional IR cut glass. In detail, conventional optical filters have spectral transmittance characteristics determined by the thickness of the IR cut glass (colored glass), so there are design constraints to achieve both the spectral transmittance characteristics and the size of the optical filter. However, in the present disclosure, a light-transmitting member 11 (clear glass as an example) is used, and the spectral transmittance characteristics are determined by the infrared light absorbing resin member 12 and the infrared light shielding film 13 described later, so that the degree of freedom in design to achieve both the spectral transmittance characteristics and the size of the optical filter can be improved.

[0024] -Infrared light absorbing resin material- The infrared light absorbing resin member 12 is disposed on one main surface 11a of the light-transmitting member 11 and is a member containing a resin that absorbs infrared light without reflecting it. As an example, it may be a resin material that contains at least a thermoplastic resin and an oxocarbon-based compound.

[0025] The thermoplastic resin is a base resin, and examples of the thermoplastic resin include (meth)acrylic resins, (meth)acrylic urethane resins, polyvinyl chloride resins, polyvinylidene chloride resins, polyolefin resins (e.g., polyethylene resins, polypropylene resins), cycloolefin resins, urethane resins, styrene resins, polyvinyl acetate, polyamide resins (e.g., nylon), aramid resins, polyimide resins, polyamideimide resins, polyester resins (e.g., polybutylene terephthalate (PBT), polyethylene terephthalate (PET), etc.), and butyl ether resins. Examples of the resin include aryl resin, polycarbonate resin, polyether resin, polysulfone resin, ABS resin (acrylonitrile butadiene styrene resin), AS resin (acrylonitrile-styrene copolymer), fluorine resin (e.g., fluorinated aromatic polymer, polytetrafluoroethylene (PTFE), perfluoroalkoxy fluorine resin (PFA), fluorinated polyaryl ether ketone (FPEK), fluorinated polyimide (FPI), fluorinated polyamic acid (FPAA) and / or fluorinated polyether nitrile (FPEN) and the like). Among these, (meth)acrylic resin, cycloolefin resin, polyimide resin, polyamideimide resin, polyester resin, polyarylate resin, polyamide resin, polycarbonate resin, polysulfone resin and / or fluorinated aromatic polymer are preferred from the viewpoint of excellent transparency and heat resistance.

[0026] Oxocarbon compounds have the spectral characteristics of transmitting light in the visible light region with a high spectral transmittance while absorbing light in the infrared light region. As an example of the oxocarbon compound, it is preferable to use a squarylium compound and / or a croconium compound that has an absorption wavelength of at least 700 nm or more and 750 nm or less and has a relatively high spectral transmittance in the visible light region.

[0027] The infrared light absorbing resin member 12 may be a coating provided by coating. Specifically, the infrared light absorbing resin member 12 may be a coating layer. Therefore, the coating layer thickness is, for example, thicker than a single film of a general chemical vapor deposition film and / or physical vapor deposition film. The coating is preferably a resin material as described above dissolved in a solvent. Examples of the solvent include ketones such as methyl ethyl ketone; glycol derivatives (ether compounds, ester compounds, ether ester compounds, etc.) such as PGMEA (2-acetoxy-1-methoxypropane); amides such as N,N-dimethylacetamide; pyrrolidones such as ethyl acetate; aromatic hydrocarbons such as toluene; aliphatic hydrocarbons such as cyclohexane; ethers such as tetrahydrofuran; and the like. Only one of these solvents may be used, or two or more of them may be used in combination.

[0028] The resin material dissolved in the solvent may contain an infrared absorbing dye other than the oxocarbon compound. The infrared absorbing dye may be an infrared absorbing pigment. Examples of the infrared absorbing dye include cyclic tetrapyrrole dyes, cyanine dyes, and azo dyes. When such an infrared absorbing dye is contained, the infrared absorbing effect can be improved.

[0029] A preferred embodiment of the infrared light absorbing resin member 12 may be a single layer. In this specification, the term "single layer" refers to a layer made of the same type of components, and does not include a laminated structure in which two or more layers made of different types of components are laminated. In other words, it does not include a structure in which light is reflected at the interface between layers by laminating layers with different refractive indices. Therefore, the infrared light absorbing resin member 12 that is a single layer can suppress wavelength shifts in optical characteristics caused by oblique incidence.

[0030] From the viewpoint of optical properties, the upper limit of the thickness of the infrared light absorbing resin member 12 may be, for example, 1 mm or less, 500 μm or less, 200 μm or less, or 50 μm or less. When a resin material dissolved in a solvent and made into a paint is applied onto the light-transmitting member 11 by a spin coating method, the infrared light absorbing resin member 12 can be made even thinner.

[0031] An example of the spectral transmittance characteristics of the infrared light absorbing resin member 12 is shown in Fig. 2. According to the spectral transmittance characteristics, the infrared light absorbing resin member 12 has a spectral transmittance of 90% or more for light with wavelengths of 459 to 580 nm, and a spectral transmittance of 97.8% between wavelengths of 510 to 515 nm. This spectral transmittance is higher than that of IR-cut glass.

[0032] Furthermore, the infrared light absorbing resin member 12 has a characteristic that the spectral transmittance for light with a wavelength of 698 to 755 nm is less than 1%. In other words, it absorbs at least light with a wavelength of 700 nm or more and 750 nm or less without reflecting it.

[0033] Furthermore, the absorption wavelength region absorbed by the infrared light absorbing resin member 12 corresponds to a wavelength width in which the transmission characteristics of the infrared light blocking film 13 (described later) are shifted by light obliquely incident on the optical filter 10 .

[0034] Furthermore, the infrared light absorbing resin member 12 preferably has a characteristic of having a spectral transmittance of 90% or more for light with a wavelength of 795 nm or more. In other words, it has a characteristic of transmitting light with a wavelength of at least 800 nm or more. Therefore, it is necessary to block light of this wavelength by the infrared light blocking film 13 described later.

[0035] 2, the infrared light absorbing resin member 12 preferably has a property of not transmitting light in the ultraviolet region. Therefore, the infrared light shielding film 13 described later may transmit light in the ultraviolet region.

[0036] -Infrared light shielding film- The infrared light shielding film 13 is disposed on the other main surface 11b of the light-transmitting member 11, and shields at least the infrared light transmitted through the infrared light absorbing resin member 12. As an example, the infrared light shielding film 13 is a film that transmits light in the visible light region. Note that the infrared light shielding film 13 may also transmit light in the ultraviolet light region.

[0037] The infrared light shielding film 13 is a multi-layer film including a low refractive index layer and a high refractive index layer. Here, the low refractive index refers to a material having a refractive index of less than 1.6, more preferably 1.35 to 1.55. The high refractive index refers to a material having a refractive index of 1.6 or more, more preferably 2.2 to 2.5. As an example, the low refractive index layer is made of SiO x ,SiN x and MgF x The high refractive index layer contains at least one selected from the group consisting of TiO x ,ZrO x and TaO x In this specification, the refractive index refers to the refractive index at 20° C. for light with a wavelength of 589 nm.

[0038] The infrared light shielding film 13 is designed to transmit at least light having a wavelength of 400 nm or more and 765 nm or less. That is, low refractive index layers and high refractive index layers are alternately laminated so as to transmit light having the above wavelengths. As an example, it is preferable that the total number of layers is 40 to 50 layers, with the thickness of the SiO2 layers and Ti2O3 layers being about 5 to 60 nm. That is, it is preferable that the total thickness of the infrared light shielding film 13 is 5 μm or less. In other words, it is preferable that the thickness of the infrared light shielding film 13 is set to be thinner than the thickness of the infrared light absorbing resin member 12.

[0039] The low refractive index layer and the high refractive index layer in the infrared light shielding film 13 may be vapor-deposited films. The vapor-deposited films may be formed by a vapor deposition apparatus. Alternatively, the films may be formed by a sputtering apparatus.

[0040] An example of the spectral transmittance characteristics of the infrared light-shielding film 13 is shown in Fig. 3. According to the spectral transmittance characteristics, the infrared light-shielding film 13 has a spectral transmittance of more than 1% for light with a wavelength of 390 nm, and a spectral transmittance of more than 90% for light with a wavelength of 402 nm. Also, the spectral transmittance for light with a wavelength of 737 nm is less than 90%, and the spectral transmittance for light with a wavelength of 765 nm or more is less than 1%, blocking the light. In other words, the infrared light absorbing resin member 12 blocks the infrared light that passes through it, and ghosts, flares, and the like caused by infrared light can be reduced.

[0041] Furthermore, the infrared light shielding film 13 transmits at least light of 400 to 765 nm. More specifically, the wavelength range of light (390 to 765 nm) transmitted by the infrared light shielding film 13 includes the absorption wavelength range (700 to 755 nm) in which the infrared light absorbing resin member 12 absorbs infrared light. With this configuration, even if the light is obliquely incident on the optical filter 10 at an angle of about ±30° and the spectral transmittance shifts by about 20 to 30 nm to the short wavelength side, the influence of the infrared light caused by the shift can be reduced. In other words, the shift in the spectral transmittance due to the above-mentioned oblique incidence corresponds to the absorption wavelength range of the infrared light absorbing resin member 12.

[0042] Although the infrared light-shielding film 13 of the present disclosure exemplifies a mode in which it blocks light with a wavelength of less than 390 nm, the infrared light-shielding film 13 may transmit light with that wavelength as long as the infrared light-absorbing resin member 12 can block the light with that wavelength. In other words, the infrared light-shielding film 13 may transmit light in the ultraviolet region.

[0043] -Anti-reflection coating (additional component)- The optical filter 10 in this embodiment may be provided with an antireflection film 14 on one main surface 11a side of the light-transmitting member 11. Specifically, the antireflection film 14 is provided on one main surface 11a of the light-transmitting member 11 with the infrared light absorbing resin member 12 interposed therebetween.

[0044] The antireflection film 14 is a film having a function of improving the spectral transmittance by preventing the reflection of light incident on the optical filter 10, and efficiently utilizing the incident light. Materials that can be used as the antireflection film 14 include, for example, SiO 2 , which is used as a single-layer antireflection film. x or MgF x or TiO used in combination x ,ZrO x or TaO x Examples include:

[0045] The anti-reflection film 14 may be a vapor-deposited film. The vapor-deposited film may be formed by a vapor deposition apparatus. Alternatively, the anti-reflection film 14 may be formed by a sputtering apparatus.

[0046] [Imaging device of the present disclosure] Next, a description will be given of the imaging device 1 of the present disclosure. The imaging device of the present disclosure includes the above-mentioned optical filter 10 and an imaging element S. Note that an optical component such as a lens L for making light incident on the optical filter 10 may be provided.

[0047] The image sensor S is intended to mean a component that converts light into an electrical signal. For example, a CCD or CMOS sensor may be used.

[0048] The imaging element S is preferably disposed on one main surface 11a side of the light-transmitting member 11. Specifically, the imaging element S is provided on one main surface 11a side of the light-transmitting member 11 via an infrared light absorbing resin member 12. In other words, the distance from the imaging element S to the infrared light absorbing resin member 12 is shorter than the distance from the imaging element S to the infrared light blocking film 13.

[0049] By adopting such an arrangement, it is possible to reduce the influence of wavelength shift due to oblique incidence. More specifically, from the viewpoint of suppressing detection by the image sensor S of reflected light from each layer of the infrared light shielding film 13, which is a multi-layer film, the distance between the image sensor S and the infrared light shielding film 13 is arranged as far as possible, thereby reducing ghosts, flares, and the like that occur in the imaging device 1. EXAMPLES

[0050] A demonstration test was carried out on the "optical filter" according to the present disclosure. Specifically, optical filters of the following comparative example and example were manufactured. Note that the anti-reflection film is an optional additional configuration, and therefore a description thereof will be omitted.

[0051] <Optical Filter of the Example> An optical filter comprising the light-transmitting member 11 shown in FIG. 1, an infrared light absorbing resin member 12, and an infrared light blocking film 13. ·Translucent material: Clear glass (SHOTT D263Teco, thickness 0.7 mm) Infrared light absorbing resin material: Nippon Shokubai Co., Ltd. (product number: KT-B) Infrared light shielding film: Multilayer film containing SiO2 and Ti2O3

[0052] <Optical filter of comparative example> An optical filter that does not use an infrared light absorbing resin member, and is equipped with an IR cut glass 11' and an optical multilayer film 13' shown in FIG. IR cut glass: (QB52, thickness 0.7mm, manufactured by Chengdu Guangming Optoelectronics Co., Ltd.) Optical multilayer coating: Multilayer coating containing SiO2 and Ti2O3

[0053] The spectral transmittance was measured using a Hitachi U-4100 with a measurement wavelength range of 350 to 1200 nm, a 50 W halogen lamp as the light source, and the measurement mode set to transmittance (%T).

[0054] The spectral transmittance of the optical filter of the Example is shown in Fig. 4, and the spectral transmittance of the optical filter of the Comparative Example is shown in Fig. 6. The spectral transmittance of the infrared light absorbing resin member and the spectral transmittance of the infrared light shielding film of the Example are the same as those shown in Figs.

[0055] In the optical filter of the embodiment, the spectral transmittance is less than 90% at a wavelength of 579 nm and less than 1% at a wavelength of 697 nm, so the slope is (90%-1%) / (579nm-697nm)=-0.75 It can be calculated as follows. On the other hand, the optical filter of the comparative example has a spectral transmittance of less than 90% at a wavelength of 549 nm and less than 1% at a wavelength of 691 nm, so the slope is (90%-1%) / (549nm-691nm)=-0.62 It can be calculated as follows. In other words, the optical filters of the examples have steeper filter characteristics than the optical filters of the comparative examples, and are able to adequately block infrared light.

[0056] Furthermore, even if the optical filter of the embodiment experiences a wavelength shift due to oblique incidence at an angle of approximately ±30°, the absorption wavelength range of the infrared light absorbing resin member (390 to 765 nm) is included in the wavelength range of light transmitted by the infrared light blocking film (700 to 755 nm), and therefore the effects of infrared light caused by the shift can be reduced, thereby reducing ghosts, flares, and the like. On the other hand, with the optical filter of the comparative example, when a wavelength shift occurs due to oblique incidence, the light caused by the wavelength shift is detected by the imaging element, resulting in ghosts, flares, and the like.

[0057] Moreover, the optical filter of the example exhibited a relatively high spectral transmittance of 97.5% in the range of 510 to 520 nm. On the other hand, the optical filter of the comparative example had a spectral transmittance of 96.1% between 495 and 500 nm, which was lower than the spectral transmittance of the optical filter of the example.

[0058] It should be noted that the embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. Therefore, the technical scope of the present disclosure is not interpreted solely by the above-described embodiments, but is defined based on the claims. The technical scope of the present disclosure also includes all modifications within the scope and meaning equivalent to the claims. [Industrial Applicability]

[0059] The technical concept of the present disclosure can be applied to optical filters and imaging devices. [Explanation of symbols]

[0060] 1,1' Imaging device 10,10' Optical Filter 11 Translucent member 11a One main surface 11b Other main surface 11' IR cut glass 12 Infrared light absorbing resin material 13 Infrared light shielding film 13' Optical multilayer film 14 Anti-reflection coating L Lens S image sensor

Claims

1. a light-transmitting member having one main surface and another main surface facing the one main surface; an infrared light absorbing resin member provided on the one main surface of the light-transmitting member; an infrared light shielding film provided on the other main surface of the light-transmitting member and configured to shield infrared light transmitted through the infrared light absorbing resin member;

2. 2. The optical filter according to claim 1, wherein an absorption wavelength region in which the infrared light absorbing resin member absorbs infrared light is included in a wavelength region of light transmitted by the infrared light shielding film.

3. 3. The optical filter according to claim 2, wherein the absorption wavelength range is at least 700 nm or more and 750 nm or less.

4. 4. The optical filter according to claim 2, wherein the absorption wavelength range is a wavelength range in which the transmission characteristics of the infrared light-shielding film are shifted by light that is obliquely incident on the optical filter.

5. 5. The optical filter according to claim 1, wherein the infrared light absorbing resin member has a property of transmitting light having a wavelength of 800 nm or more.

6. 6. The optical filter according to claim 1, wherein the infrared light absorbing resin member has a property of blocking light in the ultraviolet region.

7. 7. The optical filter according to claim 1, wherein the infrared light absorbing resin member contains an oxocarbon compound.

8. 8. The optical filter according to claim 1, wherein the infrared light absorbing resin member is a coating containing an infrared light absorbing pigment.

9. 9. The optical filter according to claim 1, wherein the infrared light-shielding film is a vapor deposition film.

10. 10. The optical filter according to claim 1, wherein the infrared light-shielding film transmits at least light having a wavelength of 400 nm or more and 765 nm or less.

11. 11. The optical filter according to claim 1, wherein the infrared light absorbing resin member has a thickness greater than a thickness of the infrared light blocking film.

12. An optical filter according to any one of claims 1 to 11, An imaging device comprising: The imaging device, wherein the imaging element is disposed on the one main surface side of the light-transmitting member.

Images