JP7306396B2 - Manufacturing method of functional resin body - Google Patents

Description

The present disclosure relates to a method for manufacturing a functional resin body having a function of reducing transmittance in the wavelength region of the blue region.

2. Description of the Related Art Conventionally, a functional resin body has been proposed that has a good effect on the human body by reducing the transmittance of light in a specific wavelength range. For example, an example of the functional resin body is a functional lens that reduces transmittance in a specific wavelength range. For example, as a functional lens, a lens that reduces the influence of blue light on eyes by reducing the transmittance of blue light has been proposed (for example, Patent Document 1).

Conventionally, for example, various methods have been proposed for producing such functional resin bodies. For example, a method of kneading a substance that can selectively absorb wavelengths into the resin body, a method of immersing the resin body in a liquid mixed with a substance that can selectively absorb wavelengths for a predetermined time (immersion dyeing method), A method of forming a multi-layered film by pressing is used.

JP 2014-199327 A

By the way, a resin body having a reduced transmittance in the wavelength region of the blue region has come to be widely used for various purposes. For example, in recent years, there has been a demand for a resin body with reduced transmittance in the blue wavelength range that can be used for night driving (with a luminous transmittance of 75% or more). However, it has been difficult to manufacture a resin body with a luminous transmittance of 75% among resin bodies in which the transmittance of the wavelength region in the blue region is sufficiently reduced (for example, the average transmittance is 10% or less).

In view of the above problems, the present disclosure provides a functional resin body that can easily produce a resin body having a luminous transmittance of 75% or more and a function of reducing the transmittance in the blue wavelength range. The object is to provide a manufacturing method.

In order to solve the above problems, the present disclosure is characterized by having the following configuration.

A method for manufacturing a functional resin body according to a first aspect of the present disclosure is a method for manufacturing a resin body with a function that reduces the transmittance of the resin body in the wavelength region of the blue region, in which a functional dye is applied to a base. By doing so, a first step of obtaining a function-adding substrate, and the function-adding substrate obtained in the first step is opposed to a resin body, and the function-adding substrate is heated to obtain the function-adding substrate. a second step of sublimating the functional dye applied to the substrate and attaching the functional dye to the resin body; and heating the resin body to which the functional dye is attached by the second step. and a third step of fixing the functional dye to the resin body, wherein the functional dye is a merocyanine-based functional dye that absorbs light in the blue region, and the functional dye is It is characterized in that the resin body is provided with a function of achieving a luminous transmittance of 75% or more and an average transmittance of 10% or less in the wavelength region of the blue region.

It is a flow chart showing the flow of the staining method of the present embodiment. It is the schematic which showed the manufacturing system used for the dyeing method of this embodiment.

<Manufacturing system for functional resin body>
Exemplary embodiments of the present disclosure are described below. For example, FIG. 1 is a flow chart showing the flow of the method for manufacturing a functional resin body according to this embodiment. For example, FIG. 2 is a schematic diagram showing a manufacturing system used in the method for manufacturing a functional resin body according to this embodiment. In the following, the case of manufacturing a functional lens that adds the function of reducing the transmittance of the wavelength region of the blue region to the lens 8, which is one of the resin bodies, by using the vapor phase transfer dyeing method will be exemplified. will be explained. Note that the technique of the present disclosure can be applied to the lens 8 regardless of its refractive index. For example, the technology of the present disclosure can be applied to lenses with various refractive indices (eg, low diopter, high diopter, 0 diopter, etc.). Of course, the techniques exemplified below are applicable to resin bodies other than the lens 8 (e.g., goggles, mobile phone covers, light covers, accessories, toys, films (e.g., thickness of 400 μm or less), plate materials (e.g., thickness is 400 μm or more), etc.) by using the vapor transfer dyeing method to add the function of reducing the transmittance in the blue region wavelength region. Further, the function-adding substrate 1 exemplified below can also be used in a process of transfer dyeing other than vapor-phase transfer dyeing.

For example, in the method of manufacturing the functional resin body of the present embodiment, the first step, the second step, and the third step are performed. For example, the method of manufacturing the functional resin body of the present embodiment is performed in the order of the first step, the second step, and the third step. For example, the first step is a step of applying a functional dye to a substrate (eg, substrate 2) to obtain a substrate for adding function (eg, substrate 1 for adding function). For example, in the second step, the function-adding substrate obtained in the first step is opposed to the resin body (for example, the lens 8), and the function-adding substrate is heated to obtain the function applied to the function-adding substrate. This is a step of sublimating the functional dye and adhering the functional dye to the resin body. For example, the third step is a step of fixing the functional dye to the resin body by heating the resin body to which the functional dye is attached in the second step.

For example, in the present embodiment, the functional dye is a merocyanine-based functional dye that absorbs light in the blue region. For example, in the present embodiment, the method for producing a functional resin body uses the above functional dye when performing the above steps, and has a luminous transmittance of 75% or more and an average A function that the transmittance becomes 10% or less is added to the resin body.

Conventionally, when a function is added to a resin body using a conventional method, it is difficult to achieve an average transmittance of 10% or less in the wavelength region of the blue region because much time and dyes are required. In addition, when the average transmittance in the wavelength region of the blue region is brought close to 10% or less by the conventional method using a lot of time and dye, the luminous transmittance is also reduced, so the luminous transmittance is reduced to 75%. % or more, and there was no resin body with such a function. That is, when the transmittance of the wavelength region in the blue region is greatly reduced, the luminous transmittance cannot be increased to 75% or more, and there has been no resin body having such a function. That is, in the resin body, when trying to obtain the effect of one of the average transmittance and the luminous transmittance in the wavelength region of the blue region, the effect of the other cannot be obtained. effect could not be met.

As described above, for example, the method for producing a functional resin body of the present disclosure includes applying a merocyanine-based functional dye that absorbs light in the blue region and having sublimation properties to a substrate. a first step of obtaining a function-adding substrate, a second step of attaching a functional dye to the resin body, and a third step of fixing the functional dye to the resin body. Further, for example, a functional dye is used to add a function to the resin body such that the luminous transmittance is 75% or more and the average transmittance in the wavelength region of the blue region is 10% or less. Thereby, for example, it is possible to manufacture a resin body having a function of a luminous transmittance of 75% or more and an average transmittance of 10% or less in the wavelength region of the blue region. That is, for example, a function that easily achieves a luminous transmittance of 75% or more and an average transmittance of 10% or less in the blue wavelength region in a short time without requiring complicated processes or many processes. It is possible to manufacture a resin body having In addition, since the resin body has a luminous transmittance of more than 75%, it can be used as a resin body for night driving (for example, a lens for night driving), and the transmittance in the blue wavelength range is reduced. A resin body can be obtained.

In addition, for example, the functional dye is applied to the substrate, and the functional dye applied to the substrate is adhered to the resin body, so that the functional dye can be efficiently used to add functions to the resin body. That is, it is possible to add a function to the resin body with a smaller amount of functional dye. In particular, the technique of the present disclosure is more useful because the dye for reducing the transmittance in the blue wavelength region is expensive.

For example, the luminous transmittance is calculated by the following formula (see JIS T 7331:2006).

例えば、Ｓ（λ）は、色の表示に用いる標準の光の分光分布を示している。ｙ（λ）は、ＸＹＺ表色系における等色関数を示している。Ｔ（λ）は、分光立体角透過率を示している。上記のように、例えば、視感透過率（τＶ）は、３８０ｎｍ～７８０ｎｍの波長域間で、標準光源Ｄ６５の分布に比視感度関数をかけたものを分母とし、樹脂体（例えば、レンズ）を通して入射した光束に比視感度関数をかけたものを分子とし、それに１００をかけたもので算出される。なお、例えば、樹脂体の視感透過率が７５％以上である場合に、樹脂体を夜間運転用として用いる場合の視感透過率に関する基準を満たすことができる。

For example, S(λ) indicates the standard spectral distribution of light used for color display. y(λ) indicates a color matching function in the XYZ color system. T(λ) indicates the spectral solid angle transmittance. As described above, for example, the luminous transmittance (τV) is the denominator obtained by multiplying the distribution of the standard light source D65 by the relative luminous efficiency function in the wavelength range of 380 nm to 780 nm, and the resin body (for example, the lens) The numerator is obtained by multiplying the luminous flux incident through the luminous flux by the relative luminosity function, and the numerator is multiplied by 100. For example, when the luminous transmittance of the resin body is 75% or more, it is possible to satisfy the standard regarding the luminous transmittance when the resin body is used for driving at night.

For example, an average transmittance of 10% or less means that the average transmittance of each wavelength in the wavelength region of the blue region is 10% or less. For example, in the present embodiment, the wavelength range of 380 nm to 500 nm, which is generally regarded as the wavelength range of the blue region, is taken as an example of the wavelength range of the blue region. That is, in the present embodiment, for example, an average transmittance of 10% or less means that the average transmittance of each wavelength in the wavelength range of 380 nm to 500 nm is 10% or less. As an example, for example, an average transmittance of 10% or less means that even if the transmittance of 410 nm to 430 nm, which is the wavelength range of the blue region, exceeds 10%, the average wavelength range is 380 nm to 500 nm. When the average value of the transmittance of each wavelength is calculated, it should be 10% or less.

For example, in the present embodiment, as the functional dye, a functional dye capable of absorbing light in the wavelength region of the blue region and having a luminous transmittance of 75% or more is used. As an example, in the present embodiment, as the functional dye, a functional dye that absorbs light in the wavelength range of 400 nm to 500 nm (having a maximum absorption peak at 473 nm) is used as the wavelength range of the blue region. . Of course, for example, as a functional dye that absorbs light in the wavelength range of the blue region, the wavelength range is not limited to the wavelength range of 400 nm to 500 nm, and any wavelength range in the wavelength range of the blue region can be set. can. For example, a functional dye that absorbs light in a specific range of wavelengths (for example, 430 nm to 500 nm) in the wavelength range of 380 nm to 500 nm, which is generally considered to be the blue wavelength range, may be used. For example, by reducing the transmittance of blue light, the effect of blue light on the eyes can be reduced.

For example, in the present embodiment, a merocyanine dye is used as the functional dye that absorbs light in the blue wavelength range. Of course, the functional dye that absorbs light in the blue region wavelength region is not limited to the above dyes, and has sublimation properties, can absorb light in the blue region wavelength region, and has luminous transmission. Any functional dye may be used as long as it has a function of achieving a rate of 75% or more.

For example, at least one or more functional dyes may be used. That is, for example, in the present embodiment, in addition to the merocyanine-based functional dye that absorbs light in the blue region, the function of reducing the transmittance of light in a specific wavelength region is added to the functional resin body. You may do so. In this case, for example, only merocyanine-based functional dyes that absorb light in the blue region may be used. Further, for example, in this case, in addition to the merocyanine-based functional dye that absorbs light in the blue region, at least one or more functional dyes (e.g., one functional dye, two functional dyes, three functional functional dyes, four functional dyes, etc.) may be used.

For example, when a plurality of functional dyes are used for the resin body, the first step may be configured to simultaneously apply the plurality of functional dyes to the substrate. Further, for example, when a plurality of functional dyes are used for the resin body, the first step may be configured to apply the plurality of functional dyes to the substrate at different timings.

Examples of the resin body include polycarbonate resins (e.g., diethylene glycol bisallyl carbonate polymer (CR-39)), polyurethane resins (Trivex), allyl resins (e.g., allyl diglycol carbonate and copolymers thereof). coalescence, diallyl phthalate and its copolymer), fumaric acid-based resin (e.g., benzyl fumarate copolymer), styrene-based resin, polymethyl acrylate-based resin, fiber-based resin (e.g., cellulose propionate), thiourethane It is also possible to add functions to a resin body made of at least one of a high refractive index material such as thioepoxy, nylon-based resin (polyamide-based resin), and the like. For example, the resin body may be coated with a receiving film to which the functional dye is easily fixed. By coating the resin body with the receptive film, it becomes possible to add functions more easily.

For example, in this embodiment, a sublimation dye for color adjustment may be used in addition to the functional dye. For example, a yellow dye may be used as the sublimation dye. For example, a quinophthalone-based functional dye may be used as the yellow dye. In this case, for example, in the first step, a sublimable sublimable dye, which is a yellow dye for dyeing the resin body, may be further applied to obtain a function-adding substrate. Further, for example, in the second step, the sublimable dye applied to the function-adding substrate may be sublimated to adhere the sublimable dye to the resin body. Further, for example, the third step may fix the sublimable dye to the resin body by heating the resin body to which the sublimable dye is attached in the second step. As a result, for example, the resin body may be provided with a function of achieving a luminous transmittance of 75% or more and a transmittance of 15% or less in the entire blue wavelength range. That is, by adding a color-adjusting dye, it is possible to change the transmittance of a predetermined wavelength range (for example, the transmittance of a wavelength range in the blue region). In other words, by adding a sublimation dye that adjusts color, it is possible to finely adjust the transmittance of a predetermined wavelength range (for example, the transmittance of a wavelength range in the blue region) by affecting the sublimation dye.

For example, a yellow dye for dyeing a resin body, using a sublimation dye and a functional dye, has a luminous transmittance of 75% or more and all wavelengths in the blue region wavelength range The resin body may be provided with a function that the transmittance of the region becomes 10% or less. As a result, the transmittance can be uniformly reduced over the entire wavelength range in the blue wavelength range. In other words, if the light has a wavelength peak within the wavelength range of the blue region, the transmittance can be favorably reduced. That is, even when various light beams with different wavelength peaks are irradiated, the transmittance of each light beam can be reduced satisfactorily.

As described above, when a sublimation dye and a functional dye are used as yellow dyes for dyeing the resin body, the luminous transmittance is 75% or more and the blue region It is possible to add a function to the resin body such that the transmittance of each wavelength of 410 nm to 430 nm in the wavelength range of 2 is 5% or less. As a result, the transmittance can be satisfactorily reduced for almost all wavelengths in the wavelength region of the blue region. In other words, even when various light beams with different wavelength peaks are irradiated in almost the entire blue region, the transmittance of each light beam can be reduced satisfactorily.

For example, when a functional dye and a sublimation dye are used for the resin body, the first step may be configured to simultaneously apply the functional dye and the sublimation dye to the substrate. Further, for example, when a functional dye and a sublimation dye are used for the resin body, the first step may be configured to apply the functional dye and the sublimation dye to the substrate at different timings.
For example, the sublimation dye may be other sublimation dye in addition to the yellow dye. In this case, for example, the sublimation dye may further include at least one of a red dye and a blue dye. As a result, for example, a function can be added, and an arbitrary color can be added, so that a functional resin body dyed in a desired color can be easily obtained. Colors other than the above three colors may be used as the sublimation dye. For example, mixed color (green, purple, etc.) dyes may be used.

For example, in this embodiment, the manufacturing system 100 is used to carry out each step in the method of manufacturing a functional resin body. For example, referring to FIG. 2, a schematic configuration of the manufacturing system 100 in this embodiment will be described. A manufacturing system 100 of this embodiment includes a dye coating device 10 , a vapor deposition device 30 , and a dye fixing device (fixing device) 50 .

For example, the dye applicator 10 is used in the first step. For example, the dye applicator 10 applies a functional dye deposited on a resin body (the lens 8 in this embodiment) to the substrate 2 to obtain the functional dye-applied substrate 1. used for For example, the vapor deposition device 30 is used in the second step. For example, the vapor deposition device 30 causes the function-adding substrate 1 to face the resin body, heats the function-adding substrate 1, sublimates the functional dye applied to the function-adding substrate 1, and transforms the functional dye into a resin. Used for attachment to the body. For example, the fixing device 50 is used in the third step. For example, the fixing device 50 is used to fix the functional dye to the resin body by heating the resin body to which the functional dye is attached.

The method for manufacturing the functional resin body will be described in detail below. In the following, a description will be given by exemplifying the case of manufacturing a functional lens in which a function is added to the lens 8, which is one of the resin bodies, by using the vapor-phase transfer dyeing method.

<First step>
For example, in the first step, the functional dye is applied to the substrate 2 by the dye applicator 10 to obtain (manufacture) the function-adding substrate 1 . For example, in the first step, the dye applicator 10 forms the dye portion 6 by depositing the functional dye, which will be vapor-deposited on the lens 8 later, onto the substrate 2 . For example, the substrate 2 is a medium that once holds a functional dye used for dyeing the lens 8 . A detailed description of the substrate 2 will be given later.

In this embodiment, for example, a printing device is used as the dye coating device 10 . For example, in the present embodiment, in the first step, the function-adding substrate 1 is obtained by printing the dyeing ink containing the functional dye on the substrate 2 using a printing apparatus. As a result, the amount of the functional dye to be applied can be easily controlled with high accuracy, and the functional dye can be easily and uniformly applied to the substrate 2 . Furthermore, by using a printing device, less functional dyes are used. In this embodiment, the functional dye is more strongly retained by performing the step of drying the ink printed by the printing apparatus.

In addition, in this embodiment, a case where a sublimation dye for adjusting the color of the functional resin body is used in addition to the functional dye will be described as an example. Of course, only functional dyes may be used. For example, in this embodiment, at least one of red, blue, and yellow dyes is used as the sublimation dye. For example, in addition to at least one of red, blue, and yellow dyes, functional dyes can be discharged, so that the functional resin body can be favorably dyed in various colors. That is, it is possible to easily obtain the function-adding substrate 1 capable of dyeing the functional resin body in various colors. Of course, colors other than these three colors may be used. For example, mixed colors (green, purple, etc.) may be used.

In addition, for example, in the present embodiment, the functional dye may be dissolved in the solvent of the ink. For example, this function-adding ink is put into an ink container for an inkjet printer (for example, an ink pack, an ink cartridge, etc.), and this ink container is mounted on the mounting portion 14 of the inkjet printer 11 . In this embodiment, the case where the ink cartridge 13 is used as an ink container will be described as an example. For example, function-adding ink is put into an ink cartridge 13 for an inkjet printer, and this cartridge 13 is installed in the installation section 14 of the inkjet printer 11 . Note that, for example, in the present embodiment, a functional dye that reduces the transmittance of light in the blue wavelength range is used as the functional dye.

In addition, for example, in the present embodiment, a sublimation dye is used together with the functional dye. Note that, for example, the sublimation dye may be dissolved in the ink solvent in the same manner as in the function-adding ink. In this embodiment, for example, the dyeing ink includes at least one of red, blue, and yellow dyeing inks. For example, this dyeing ink is placed in an ink container for an inkjet printer (for example, an ink pack, an ink cartridge, etc.), and this ink container is attached to the attachment portion 14 of the inkjet printer 11 . In this embodiment, the case where the ink cartridge 13 is used as an ink container will be described as an example. For example, dyeing inks are put into ink cartridges 13 for an inkjet printer, and the cartridges 13 are installed in the installation section 14 of the inkjet printer 11 . For example, a commercially available inkjet printer 11 can be used. In addition, for example, the sublimation dye preferably has heat resistance to withstand heat during sublimation. As an example, in the present embodiment, a quinophthalone-based sublimable dye or an anthraquinone-based sublimable dye is used (for example, for examples of dyes, see JP-A-2004-326018, JP-A-2003-185982, etc.). but).

For example, in the present embodiment, the configuration in which the function-adding ink and the dyeing ink are contained in separate ink containers (in this embodiment, the ink cartridge 13) is taken as an example, but the configuration is limited to this. not. For example, a mixed ink in which a function-adding ink and a dyeing ink are mixed may be used. In this case, for example, the mixed ink may be placed in the ink container.

In the present embodiment, for example, a case where an injection printer 11 is used as a printing device will be described as an example. In this case, for example, the functional dye is applied to the substrate 2 by printing with the inkjet printer 11 . In this embodiment, for example, the injection printer 11 includes a mounting section 14 , an inkjet head 15 , and a control means (control section) 16 . Of course, the injection printer 11 is not limited to the configuration described above.

For example, the mounting portion 14 includes an ink container for function-adding ink containing a functional dye (for example, an ink cartridge 13 described later) and an ink container for dyeing ink containing a sublimation dye (for example, an ink container to be described later). Cartridge 13, etc.) are mounted. For example, the inkjet head 15 ejects the function-adding ink and the dyeing ink toward the substrate 2 from the ink container for the function-adding ink and the ink container for the dyeing ink, which are attached to the mounting portion 14 . As a result, the base 2 is printed with the function-adding ink and the dyeing ink. For example, the control unit 16 controls the driving of the inkjet heads 15 to independently eject the function-adding ink and the dyeing ink from the respective inkjet heads 15 .

For example, when the dyeing ink is ejected together with the function-adding ink, the control unit 16 simultaneously ejects the function-adding ink and the dyeing ink from the inkjet head 15 to combine the functional dye and the sublimation dye. It may be applied to the substrate 2 in a mixed state. In the present embodiment, "simultaneously" means any configuration in which the mixture of the functional dye and the sublimation dye can be coated on the substrate 2, and includes substantially simultaneous.

Note that, for example, when the dyeing ink is ejected together with the function-adding ink, the control unit 16 ejects the function-adding ink and the dyeing ink from the inkjet head 15 at different timings, and the functional dye and the sublimation property are ejected at different timings. A dye may be applied to the substrate 2 . For example, one of the function-adding ink and the dyeing ink may be ejected first, and then the other ink may be ejected.

For example, using this inkjet printer 11, a dyeing ink containing a functional dye for adding a function of reducing the transmittance of light in the wavelength region of the blue region, and a sublimation dye for adjusting the color and dyeing ink containing is printed on the substrate 2, a personal computer 12 (hereinafter referred to as PC) is used to adjust the discharge amount of each dyeing ink to be printed.

In this embodiment, the amount of function-adding ink containing functional dye and the amount of dyeing ink containing sublimation dye for color adjustment are stored in the memory 20 as color data. there is In addition, color density is stored in the memory 20 as color data. For example, by selecting the color data desired by the operator, it is possible to retrieve the color data from the memory 20, add the same function and reproduce the same color any number of times. Further, for example, since the color density is digitally managed, it is possible to obtain the same color density as many times as necessary. Note that, for example, the density gradient can be acquired by a gradation function provided in drawing software or the like. Further, for example, a gradation according to preference may be set in advance and saved in the PC 12 as unique gradation data (color data). For example, in the present embodiment, a gradation pattern having a density gradient is described as an example of a desired color, but the desired color is not limited to this. For example, the desired colors can be printed with various designs (eg, monochromatic designs, images, etc.).

Note that the concentration of the functional dye may also be changeable. For example, the light transmittance can be changed by changing the concentration of the functional dye. In this case, for example, the density of the functional dye may be selectable, and color data for applying the functional dye at the selected density may be selected for each density of the functional dye.

For example, the substrate 2 on which the functional dye is printed by a printing apparatus may be made of paper, metal plate (eg, aluminum, iron, copper, etc.), glass, or the like. In the following description, the substrate 2 will be described using paper as an example. Further, in the present embodiment, for example, a sheet-like substrate is used as the substrate 2 . Also, in the following description, the injection printer 11 is taken as an example of the printing device. For example, the substrate 2 is placed in the injection printer 11, and the PC 12 is operated to add a preset function, color, and color density, and print each ink.

In addition, in this embodiment, although the structure which uses the inkjet printer 11 as a printing apparatus in the dye application apparatus 10 was mentioned as an example and it demonstrated, it is not limited to this. As the printing device, a laser printer may be used to apply the functional dye to the substrate 2 by printing. In this case, the functional dye is applied to the substrate 2 by means of a laser printer, for example using toner.

In addition, in this embodiment, although the structure which applies a functional dye to the base|substrate 2 using a printing apparatus as the dyeing|attachment part 10 was mentioned as an example, it is not limited to this. For example, the dye applicator 10 may have any structure as long as it can apply a functional dye to the substrate 2 . For example, the dye applicator 10 may cause the function-adding ink to adhere to the function-adding substrate 1 by driving a dispenser (quantitative liquid applicator), a roller, or the like. Further, for example, the function-adding ink may be applied to the function-adding substrate 1 by an operator using a brush, a roller, a spray, or the like, without using the dye applying device 10 . It should be noted that the functional dye may be applied to the substrate 2 without being converted into an ink.

When the functional dye is applied to the substrate 2, the functional dye may be applied at least once. For example, the functional dye may be applied to the substrate 2 by one application (for example, one printing), or the functional dye may be applied by multiple applications (for example, multiple printing). You may make it apply|coat to the base|substrate 2. FIG. That is, the number of times the functional dye is applied to the substrate 2 may be changed depending on the color and density.

<Functional ink>
For example, in the present embodiment, as the functional dye, a functional dye capable of absorbing light in the wavelength region of the blue region and having a luminous transmittance of 75% or more is used. As an example, in the present embodiment, as the functional dye, a functional dye that absorbs light in the wavelength range of 400 nm to 500 nm (having a maximum absorption peak at 473 nm) is used as the wavelength range of the blue region. . Of course, for example, as a functional dye that absorbs light in the wavelength range of the blue region, the wavelength range is not limited to the wavelength range of 400 nm to 500 nm, and any wavelength range in the wavelength range of the blue region can be set. can. For example, a functional dye that absorbs light in a specific range of wavelengths (for example, 430 nm to 500 nm) in the wavelength range of 380 nm to 500 nm, which is generally considered to be the blue wavelength range, may be used. For example, by reducing the transmittance of blue light, the effect of blue light on the eyes can be reduced.

For example, in the present embodiment, a merocyanine dye is used as the functional dye that absorbs light in the blue wavelength range. Of course, the functional dye that absorbs light in the blue region wavelength region is not limited to the above dyes, and has sublimation properties, can absorb light in the blue region wavelength region, and has luminous transmission. Any functional dye may be used as long as it has a function of achieving a rate of 75% or more.

As described above, the function-adding substrate 1 coated with the functional dye by the inkjet printer 11 is obtained.

<Second step>
As described above, the second step is performed using the function-adding substrate 1 obtained in the first step. For example, in the second step, the function-adding substrate 1 obtained in the first step is opposed to the resin body (the lens 8 in this embodiment), and the function-adding substrate 1 is heated to obtain a function-adding substrate. This is a step of sublimating the functional dye and sublimation dye applied to the substrate 1 and adhering the functional dye and sublimation dye to the lens 8 . For example, the vapor deposition device 30 is used in the second step.

For example, the vapor deposition device 30 heats the functional dye and the sublimable dye attached to the function-adding substrate 1 with electromagnetic waves, thereby sublimating the functional dye and the sublimable dye toward the functional lens 8 . As a result, the functional dye and the sublimable dye are vapor deposited on the functional lens 8 . Note that the functional lens 8 may be formed with various layers such as a receiving film for facilitating fixing of the functional dye and the sublimation dye in the third step, which will be described later. For example, the vapor deposition apparatus 30 of this embodiment includes an electromagnetic wave generator 31 , a vapor deposition jig 32 , a pump 36 and a valve 37 . Of course, the configuration of the vapor deposition device 30 is not limited to the configuration described above. In this embodiment, the case where the functional dye and the sublimation dye are vapor-deposited on the functional lens 8 will be described as an example, but even if only the functional dye is vapor-deposited on the functional lens 8 good.

For example, the electromagnetic wave generator 31 generates electromagnetic waves. As an example, in this embodiment, a halogen lamp that generates infrared rays is used as the electromagnetic wave generator 31 . However, the electromagnetic wave generator 31 may be any device that generates electromagnetic waves. Therefore, instead of the halogen lamp, a configuration for generating electromagnetic waves of other wavelengths such as ultraviolet rays and microwaves may be used. For example, the vapor deposition device 30 can raise the temperature of the functional dye in a short time by irradiating the function-adding substrate 1 with electromagnetic waves. Further, when sublimating the functional dye and the sublimable dye of the function-adding substrate 1, the functional dye may be heated by bringing a hot iron plate or the like into contact with the function-adding substrate 1. However, it is difficult to bring the function-adding substrate 1 into contact with the iron plate or the like uniformly (for example, without gaps). If the contact state is not uniform, the functional dye and the sublimation dye may not be uniformly heated, resulting in color unevenness and the like. On the other hand, the vapor deposition apparatus 30 of this embodiment can uniformly heat the functional dye and the sublimation dye by electromagnetic waves from the electromagnetic wave generator 31 spaced apart from the function-adding substrate 1 .

For example, the deposition jig 32 holds the function-adding substrate 1 and the lens 8 . The vapor deposition jig 32 of this embodiment includes a lens supporting portion 33 and a substrate supporting portion 34 . The lens support portion 33 includes a cylindrical base and a mounting table arranged inside the base. The lens 8 is supported by the mounting table of the lens support portion 33 while being surrounded by the base portion. The base support portion 34 is located at the upper end of the cylindrical base and supports the function-adding base 1 above the lens 8 . Although details are not shown, when the outer peripheral edge of the function-adding base 1 is placed on the base supporting portion 34, an annular base pressing member is placed from above the outer peripheral edge of the function-adding base 1. . As a result, the position of the function-adding substrate 1 is fixed. Conventionally, in order to suppress contamination of the vapor deposition device 30, a plate-shaped glass is further placed on the upper surface of the function-adding substrate 1 held by the substrate supporting portion 34, thereby sublimating the functional dye. In addition, the sublimation dye may be prevented from spreading through the back side of the function-adding substrate 1 .

For example, the function-adding substrate 1 is arranged so that the surface on which the functional dye and the sublimation dye are adhered faces the functional lens 8 . In this embodiment, since the function-adding base 1 is supported above the functional lens 8, the function-adding base 1 is placed on the base support 34 so that the dye-attached surface faces downward.

For example, when the function-adding substrate 1 and the lens 8 are opposed to each other, they may be opposed in a non-contact manner (for example, 2 mm to 30 mm). In this case, for example, in the second step, the function-adding substrate 1 obtained in the first step is opposed to the lens 8 in a non-contact manner, and the function-adding substrate 1 is heated to apply the liquid to the function-adding substrate 1. The functional dye and the sublimation dye may be sublimated to adhere the functional dye and the sublimation dye to the lens 8 . For example, by facing the substrates in a non-contact manner, it is possible to suppress conduction of heat to the resin body when the substrate is heated for sublimating the functional dye and the sublimation dye. As a result, it is possible to suppress discoloration, shrinkage, etc. of the resin body due to heat.

In addition, for example, by facing each other in a non-contact manner, a distance is created between the function-adding substrate and the resin body, so that the functional dye and the sublimation dye can be sufficiently dispersed and adhered to the resin body. can. As a result, variations in light transmittance and color unevenness in the resin body can be further suppressed, and a good functional dyed resin body can be produced. In particular, when a gradation pattern is applied to the base body in terms of the color of the resin body, the gradation pattern can be preferably reproduced on the resin body. Of course, for example, when the function-adding substrate 1 and the lens 8 are opposed to each other, they may be opposed while being in contact with each other.

For example, the pump 36 exhausts the gas inside the vapor deposition device 30 to the outside and reduces the pressure inside the vapor deposition device 30 . That is, for example, the pump 36 discharges the gas inside the vapor deposition device 30 to the outside, and makes the inside of the vapor deposition device 30 have a predetermined degree of vacuum.

For example, in the second step, when the lens 8 is placed in the deposition device 30 to deposit the functional dye and the sublimation dye, the pump 36 is used to set the interior of the deposition device 30 to a predetermined degree of vacuum to carry out the deposition work. For example, in the present embodiment, the interior of the vapor deposition device 30 is set to a predetermined vacuum state, but the present invention is not limited to this.

For example, after the vacuum state, the electromagnetic wave generator 31 is used to heat the function-adding substrate 1 from above, thereby sublimating the functional dye and the sublimation dye. For example, if the heating temperature is lower than 100° C. on the function-adding substrate 1, the functional dye and the sublimable dye are difficult to sublime from the function-adding substrate 1. For example, if the heating temperature exceeds 250° C., the functional dye is heated at a high temperature. Also, deterioration of the sublimation dye and deformation of the lens 8 are likely to occur. Therefore, although the heating temperature is preferably between 100 and 250° C., it is preferable to select a temperature as high as possible according to the material of the lens 8 .

Note that, for example, the second step may be a step of performing vapor deposition at least once. In this case, for example, a plurality of function-adding substrates 1 may be used and vapor deposition may be repeated a plurality of times (for example, twice). Such a method is useful, for example, when the amount of dye to be applied to the resin body is large, or when a plurality of types (eg, five types) of dyes are used.

<Third step>
For example, when the second step is completed, the third step is performed. The third step will be described below. For example, in the third step, the lens 8 to which the functional dye and the sublimation dye have adhered in the second step is heated to fix the functional dye and the sublimation dye. Of course, for example, only functional dyes may be fixed.

For example, the dye fixing device 50 fixes the functional dye and the sublimation dye to the lens 8 by heating the lens 8 on which the functional dye and the sublimation dye are vapor-deposited. For example, the lens 8 is heated to fix the functional dye and the sublimation dye to the lens 8 . This makes it possible to add the function of reducing the transmittance of light in a specific wavelength range to the lens 8 and adjust the color of the lens 8 .

For example, an oven is used as the dye fixing device 50 in this embodiment. If an oven (particularly, a blower-type constant-temperature thermostat) is used, the temperature of the lens 8 will gradually rise over a long period of time, so temperature differences are less likely to occur. Therefore, the functional dye and the sublimation dye are easily fixed on the lens 8 evenly.

For example, when performing the third step, the functional dye and the sublimation dye may be fixed by heating under normal pressure. Of course, the third step may be performed under different atmospheric pressures. For example, after attaching the functional dye and the sublimation dye to the lens 8 in the vapor deposition device 30, the operator takes out the lens 8 to which the functional dye and the sublimation dye are attached. For example, the operator puts the lens 8 into the dye fixing device 50 and heats it under normal pressure to fix the functional dye and the sublimation dye.

For example, in this embodiment, the heating temperature is set to a temperature at which the lens 8 is not deformed and sufficient color development is possible. For example, the heating temperature may preferably be 110° C. or higher and 160° C. or lower (110° C. to 160° C.). In this case, for example, in the third step, the functional dye and the sublimation dye are heated at a temperature of 110° C. to 160° C. to the resin body to which the functional dye and the sublimation dye are attached in the second step. may be fixed. For example, by fixing the functional dye and the sublimation dye at the temperature of 110 ° C. or higher in the third step, the functional dye and the sublimation dye can reach the inside of the resin body (lens 8 in this embodiment) more easily. As a result, the function of reducing the transmittance of light in a specific wavelength range can be favorably added, and dyeing can be performed more favorably. Further, for example, it is possible to suppress color loss from the dyed (color-adjusted) resin body (lens 8 in this embodiment) after the third step. In addition, for example, by fixing the functional dye and the sublimation dye at a temperature of 160° C. or less in the third step, it is possible to prevent the resin body from being overheated, making it more difficult for the resin body to deform. can do. Of course, in the present embodiment, the above temperature is used as the temperature at which the resin body is difficult to deform, but the present invention is not limited to this. For example, if the resin body has high heat resistance, deformation can be made difficult even if fixing is performed at a higher temperature depending on the resin body.

The heating temperature is more preferably 120° C. or higher and 155° C. or lower. In this case, for example, in the third step, the functional dye and the sublimation dye are heated at a temperature of 120° C. to 155° C. to the resin body to which the functional dye and the sublimation dye are attached in the second step. may be fixed. For example, by fixing the functional dye and the sublimation dye at the temperature of 120 ° C. to 155 ° C. in the third step, the function of reducing the transmittance of light in a specific wavelength range can be added well, and the Dyeing can be done. In addition, for example, after the third step, color loss from the dyed resin body can be further suppressed, and deformation of the resin body can be further suppressed.

As described above, for example, the method for producing a functional resin body of the present disclosure includes applying a merocyanine-based functional dye that absorbs light in the blue region and having sublimation properties to a substrate. a first step of obtaining a function-adding substrate, a second step of attaching a functional dye to the resin body, and a third step of fixing the functional dye to the resin body. Further, for example, a functional dye is used to add a function to the resin body such that the luminous transmittance is 75% or more and the average transmittance in the wavelength region of the blue region is 10% or less. Thereby, for example, it is possible to manufacture a resin body having a function of a luminous transmittance of 75% or more and an average transmittance of 10% or less in the wavelength region of the blue region. That is, for example, a function that easily achieves a luminous transmittance of 75% or more and an average transmittance of 10% or less in the blue wavelength region in a short time without requiring complicated processes or many processes. It is possible to manufacture a resin body having In addition, since the resin body has a luminous transmittance of more than 75%, it can be used as a resin body for night driving (for example, a lens for night driving), and the transmittance in the blue wavelength range is reduced. A resin body can be obtained.

In addition, for example, the functional dye is applied to the substrate, and the functional dye applied to the substrate is adhered to the resin body, so that the functional dye can be efficiently used to add functions to the resin body. That is, it is possible to add a function to the resin body with a smaller amount of functional dye. In particular, the technique of the present disclosure is more useful because the dye for reducing the transmittance in the blue wavelength region is expensive.

In the present embodiment, the shape (printing shape) of the dye portion 6 is circular, but is not limited to this. good.

In addition, in this embodiment, the case where the heating method of the function-adding substrate 1 is performed from above is exemplified, but the present invention is not limited to this. For example, the method of heating the function-adding substrate 1 can similarly sublimate the functional dye by heating from the side or from below.

It should be noted that it is also possible to change the configuration of the dye fixing device 50 . For example, dye fixer 50 may heat lens 8 by scanning a laser over lens 8 . In this case, the dye-fixing device 50 can intentionally create a temperature difference depending on the part of the lens 8 . For example, the dye fixing device 50 may control laser scanning according to the desired gradation state when performing dyeing with gradation or applying functional dyes in gradation. The dye fixing device 50 may control laser scanning according to the thickness of the lens 8 and the like so that the temperature of each portion of the lens 8 becomes a desired temperature. Alternatively, the dye fixing device 50 may heat the lens 8 by directly irradiating the lens 8 with electromagnetic waves.

In addition, two or more of the processes (for example, the first process, the second process, the third process, etc.) performed in each of the dye coating device 10, the vapor deposition device 30, and the dye fixing device 50 are performed by one device. may be For example, a dyeing device that performs both the second step performed by the vapor deposition device 30 and the third step performed by the dye fixing device 50 may be used. In this case, for example, the heating of the function-adding substrate 1 in the second step and the heating of the lens 8 in the third step may be performed by the same heating means (for example, an infrared heater or the like). Also, the dyeing apparatus may automatically perform a plurality of steps (for example, from the second step to the third step) in a series of steps.

In addition, for example, when using a functional dye, if a region for reducing the transmittance of light in a specific wavelength range is provided in a gradation pattern, there is a possibility that the transmittance of light in the specific wavelength range cannot be uniformly reduced. There is Therefore, for example, the area to which the functional dye is applied and the area to which the other dye is applied may be different areas. As an example, the functional dye may be fixed on the entire resin body, and another dye different from the functional dye may be fixed on a partial area of the resin body.

For example, the functional resin body may be further coated (for example, hard coat, antireflection coat, antifouling coat, etc.). For example, coating may be applied to improve a specific function of the functional resin body.

Hereinafter, the present disclosure will be specifically described with reference to experimental examples and comparative examples, but the present disclosure is not limited to the following experimental examples and comparative examples. In Experimental Examples 1 to 4 below, a functional dye is adhered to the surface of a resin body, and the functional resin body with the functional dye adhered to the surface is heated to fix the functional dye to the resin body. got the body Further, in Experimental Examples 2 to 4 below, a functional dye and a sublimation dye are attached to the surface of the resin body, and the functional resin body with the functional dye and the sublimation dye attached to the surface is heated to obtain the functional dye. And the sublimation dye was fixed on the resin body to obtain a functional resin body. In Experimental Examples 5 to 7 below, the functional resin bodies obtained in Experimental Examples 2 to 4 were subjected to a coating treatment to obtain coated functional resin bodies.

In Comparative Example 1 below, a functional resin body was obtained by immersing a functional dye in a resin body using an impregnation method. Further, in Comparative Examples 2 to 4 below, a sublimation dye is attached to the resin body without using a functional dye, and the resin body with the sublimation dye attached to the surface is heated to obtain the sublimation dye. was fixed on the resin body to obtain a dyed resin body. In Comparative Examples 5 to 7 below, the dyed resin bodies obtained in Comparative Examples 2 to 4 were subjected to coating treatment to obtain coated dyed resin bodies. The wavelength transmittance of the functional resin bodies and dyed resin bodies obtained in Experimental Examples and Comparative Examples was evaluated.

<Experimental example 1>
In this experimental example, a functional dye capable of absorbing light in the wavelength range of 430 nm to 500 nm was used as the wavelength range of the blue region. First, the dyeing ink used for the printer is produced. As the functional dye, FDB-006 ink (Yamada Kagaku Kogyo Co., Ltd.), which is a merocyanine dye capable of absorbing light in the wavelength range of 430 nm to 500 nm, was used. For example, a functional dye, pure water, and a dispersing agent were placed in a container and sufficiently stirred to produce a dyeing ink. For example, Demol MS (Kao Corporation) was used as a dispersant. For example, the composition ratio of dye, dispersant, and pure water was 6.0% by weight of dye, 2.5% by weight of dispersant, and 91.5% by weight of pure water.

For example, the amount of functional dye is preferably 0.1-20% by weight, more preferably 0.5-10% by weight. Of course, the amount of functional dye is not limited to the above weight percent, and any amount can be used. If the content of the functional dye is less than 0.1% by weight, the dye becomes difficult to fix, and the desired density may not be obtained. Moreover, when the functional dye exceeds 20% by weight, the dispersibility of the functional dye may deteriorate. Moreover, the functional dye to be used must be heat-resistant and not decomposed by heat. In this experimental example, the amount of functional dye was set to 6.0% by weight.

In order to disperse the functional dye, after sufficiently stirring the dispersant, the container containing the dyeing ink is placed in a container containing water for cooling, and the functional dye is treated with an ultrasonic homogenizer for a specified time. to the desired particle size. Thereafter, the dyeing ink is suction-filtered through a filter with a pore size of about 1 μm (glass fiber filter paper GF/B) to remove particles with large particle sizes and dust. After that, pure water is added to adjust the concentration of the ink to a specified level, and if necessary, a humectant or a surface active agent for adjusting the surface tension is added to prepare the functional ink. Although an ultrasonic homogenizer was used for dispersion this time, a microparticulating device such as a bead mill may also be used. In this way, the function-adding ink is manufactured.

In this experimental example, after thoroughly washing the inside of the printer's (EPSON PX-6250S) function-adding ink cartridge, the function-adding ink containing the prepared functional dye was added and set in the printer. After repeating the cleaning many times, after confirming that the ink has changed, printing software TTS-PS2 (Nidek Co., Ltd.) was applied to a substrate (high-quality PPC paper) with a paper thickness of 100 μm and the back side painted black. was used to eject and print the ink for adding function to the substrate to apply the functional dye, thereby manufacturing a substrate for adding function (functional dye=4096).

Dyeing was carried out using the substrate for adding functions thus obtained. The functional dye was vapor-deposited onto the MR8 lens (S-0.00) by attaching the function-adding substrate to a dyeing jig in a vapor deposition apparatus (Nidek TTM-1000). As for the conditions at this time, the distance between the dyed surface side of the MR8 lens and the function-adding substrate was set to 15 mm. After the pressure in the vapor deposition apparatus was lowered to 60 Pa by a pump, the surface temperature of the function-adding substrate was heated to 200° C. by a heating unit (a halogen lamp was used in this experimental example). A temperature sensor (not shown) was used to measure the temperature in the vicinity of the substrate for adding functions, and when the temperature reached 200° C., the halogen lamp was turned off to sublimate and adhere the functional dye.

Then, after returning the atmospheric pressure in the vapor deposition apparatus to normal pressure, it was heated in an oven for 3 hours in order to fix the functional dye. At this time, the heating temperature of the oven was set to 155° C., and the MR8 lens to which the functional dye was adhered was heated to fix the functional dye. In this way, functions were added to the MR8 lens. After adding functions, the following evaluations were made. Table 1 shows the results.

[Evaluation of average transmittance in the wavelength region of the blue region]
The spectral transmittance of the MR8 lens after function addition using the function addition substrate (that is, after vapor deposition and the third step) was measured with DOT-3C (Murakami Color Research Institute) for evaluation. In this evaluation, it was examined whether or not the average transmittance in the blue region of 380 to 500 nm was 10% or more.
The average transmittance of light in the wavelength range of 380 to 500 nm is 10% or less: ○
The average transmittance of light in the wavelength range of 380 to 500 nm is greater than 10% ×
[Evaluation of transmittance in the entire wavelength range in the blue wavelength range]
The spectral transmittance of the MR8 lens, which had been function-added using the function-adding substrate, was measured by DOT-3C and evaluated. In this evaluation, it was examined whether or not the transmittance of each wavelength of 410 nm to 430 nm in the blue region was 5% or less.
Transmittance of each wavelength from 410 nm to 430 nm is 5% or less: ○
Transmittance of each wavelength from 410 nm to 430 nm is greater than 5%: ×
[Luminous transmittance evaluation]
The spectral transmittance of the MR8 lens, which had been function-added using the function-adding substrate, was measured by DOT-3C and evaluated. In this evaluation, the luminous transmittance was calculated by calculating the transmittance in the wavelength range of 380 to 780 nm in the blue region and substituting the calculated transmittance in each wavelength range into Equation 1 above.
Luminous transmittance of 75% or more: O Luminous transmittance of greater than 75%: ×
[Relative visibility attenuation rate Q value (see JIS T 7330) evaluation for signal light recognition]
Has a Q value for all red, yellow, green, and blue signal lights: o Also has a Q value for all red, yellow, green, and blue signal lights Not: ×
<Experimental example 2>
In addition to the functional dye, a yellow sublimation dye for adjusting the color was prepared to add the function and adjust the color. bottom. Yellow NK-1 (Nidek Co., Ltd.) was used as a dyeing ink containing a yellow dye. After thoroughly washing the inside of the ink cartridge for the dyeing ink of the printer, the dyeing ink containing a yellow dye was added and set in the printer. Print on a substrate with a paper thickness of 100 μm using printing software TTS-PS2 by simultaneously ejecting the function addition ink and the above dyeing ink onto the substrate (mixing ratio yellow: functional dye = 2048: 4096). By doing so, a function-adding substrate was manufactured. Functions were added to the MR8 lens using the manufactured substrate for adding functions, and the same evaluation as in Experimental Example 1 was performed. Table 1 shows the above results.

<Experimental example 3>
In addition to the yellow sublimation dye for adjusting the color, a red dye and a blue dye were prepared as dyes for adjusting the color, and the color was adjusted while adding a function. Experimental Example 2 In the same way as in , the function was added to the MR8 lens and evaluated. As dyeing inks containing red and blue dyes, RED NK-1 (Nidek Co., Ltd.) and Blue NK-1 (Nidek Co., Ltd.) were used, respectively. After thoroughly washing the inside of the ink cartridge for the dyeing ink of the printer, each dyeing ink containing a red dye, a blue dye and a yellow dye was put thereinto and set in the printer. Using the printing software TTS-PS2, the function-adding ink and the dyeing ink were simultaneously ejected onto the substrate having a paper thickness of 100 μm and the back surface of which was painted black (ratio red: blue: Yellow: functional dye=32:80:2048:4096) A substrate for adding functions was produced by printing. Functions were added to the MR8 lens using the manufactured substrate for adding functions, and the same evaluation as in Experimental Example 1 was performed. Table 1 shows the above results.

<Experimental example 4>
On a substrate having a paper thickness of 100 μm and the back surface of which is painted black, the function-adding ink and the dyeing ink are simultaneously discharged onto the substrate (mixing ratio red: blue: yellow: functional dye = 80: 32: 2048:4096) A function was added to the MR8 lens in the same manner as in Experimental Example 3, except that the function-adding substrate was manufactured by printing, and the same evaluation as in Experimental Example 1 was performed. Table 1 shows the above results.

<Experimental example 5>
A function was added to the MR8 lens, and a function was added to the MR8 lens and evaluated in the same manner as in Experimental Example 2, except that the functional MR8 lens to which the function was added was subjected to a coating process. As in Experimental Example 2, a hard coat film and an antireflection film were formed on the manufactured functional MR8 lens to complete a coated functional MR8 lens. For example, the hard coat film was formed by applying a silicone thermosetting hard coat liquid by a dipping method and then heating it. Further, for example, the antireflection film is deposited by a vacuum deposition method at a degree of vacuum of 1.0 × 10 Pa or less and an internal temperature of the deposition machine of 70 ° C., and the first layer is ZrO 2 with a thickness of 40 nm and two layers. A film of 60 nm thick SiO2 was formed as the eye, a 120 nm thick ZrO2 film was formed as the third layer, and a 110 nm thick SiO2 film was formed as the fourth layer. After completing the coated functional MR8 lens, the same evaluation as in Experimental Example 1 was performed. Table 1 shows the results.

<Experimental example 6>
The functional MR8 lens was coated in the same manner as in Experimental Example 5 except that the functional MR8 lens produced in Experimental Example 3 was used as the functional MR8 lens, and the same evaluation as in Experimental Example 1 was performed. . Table 1 shows the results.

<Experimental example 7>
The functional MR8 lens was coated in the same manner as in Experimental Example 5 except that the functional MR8 lens produced in Experimental Example 4 was used as the functional MR8 lens, and the same evaluation as in Experimental Example 1 was performed. Table 1 shows the results.

<Comparative Example 1>
Instead of producing functional MR8 lenses using the vapor transfer dyeing method, the conventional immersion dyeing method was used to produce functional MR8 lenses. After putting 60 g of FDB-006 (Yamada Chemical Co., Ltd.), 30 g of Demol MS (Kao Corporation), and 3 g of Succinol (Senka Co., Ltd.) in a 1 L stainless steel beaker, add 60 g of water at about 70 ° C. Stir well until evenly mixed. After adding 20 g of an aqueous sodium dodecylbenzenesulfonate solution adjusted to 30% by weight to the liquid, water at room temperature was added to make 1000 g and stirred to prepare a functional addition liquid having a FDB-006 concentration of 0.6%. . The above concentration is about twice as high as the concentration of the dye used in the conventional penetrating method. The function-imparting liquid put in a stainless steel beaker was kept at 95° C. while stirring in a water bath, and the function was added by immersing the MR8 lens and allowing it to stand for 60 minutes. After 60 minutes, the MR8 lens was taken out and the MR8 lens surface was wiped with a cloth soaked with alcohol to produce a functional MR8 lens. The same evaluation as in Experimental Example 1 was performed on the functional MR8 lens after addition of functions. Table 2 shows the results.

<Comparative Example 2>
Except for using Yellow NK-1 (Nidek Co., Ltd.), which is a dyeing ink containing a conventional yellow dye instead of a functional dye (mixing ratio yellow: functional dye = 6144: 0), Experimental Example 2, and the same evaluation as in Experimental Example 1 was performed. Table 2 shows the above results.

<Comparative Example 3>
Except for using Yellow NK-1 (Nidek Co., Ltd.), a dyeing ink containing a conventional yellow dye instead of a functional dye (blending ratio red: blue: yellow: functional dye = 32: 80: 6144:0) was treated in the same manner as in Experimental Example 3 and evaluated in the same manner as in Experimental Example 1. Table 2 shows the above results.

<Comparative Example 4>
Except for using Yellow NK-1 (Nidek Co., Ltd.), a dyeing ink containing a conventional yellow dye instead of a functional dye (blending ratio red: blue: yellow: functional dye = 80: 32: 6144:0) was treated in the same manner as in Experimental Example 4 and evaluated in the same manner as in Experimental Example 1. Table 2 shows the above results.

<Comparative Example 5>
Except for using Yellow NK-1 (Nidek Co., Ltd.), which is a dyeing ink containing a conventional yellow dye instead of a functional dye (mixing ratio yellow: functional dye = 6144: 0), Experimental Example 5, and the same evaluation as in Experimental Example 1 was performed. Table 2 shows the above results.

<Comparative Example 6>
Except for using Yellow NK-1 (Nidek Co., Ltd.), a dyeing ink containing a conventional yellow dye instead of a functional dye (blending ratio red: blue: yellow: functional dye = 32: 80: 6144:0) was treated in the same manner as in Experimental Example 6 and evaluated in the same manner as in Experimental Example 1. Table 2 shows the above results.

<Comparative Example 7>
Except for using Yellow NK-1 (Nidek Co., Ltd.), a dyeing ink containing a conventional yellow dye instead of a functional dye (blending ratio red: blue: yellow: functional dye = 80: 32: 6144:0) was treated in the same manner as in Experimental Example 7 and evaluated in the same manner as in Experimental Example 1. Table 2 shows the above results.

<Evaluation results>

表１の実験例１に示されるように、気相転写染色法にて、機能性染料を用いて機能付加を行った場合には、３８０ｎｍ～５００ｎｍの青色領域の波長域の光の平均透過率を１０％以下とする機能を付加することができるとともに、視感透過率が７５％以上となる樹脂体を得ることができることを確認できた。また、表１の実験例１に示されるように、赤信号光、黄信号光、緑信号光、青信号光の全ての信号光に対するＱ 値をもつことが確認できた。このため、この樹脂体は、夜間運転用のレンズとして用いることができること示された。なお、気相転写染色法にて、機能性染料を用いて機能付加を行った場合には、３８０ｎｍ～５００ｎｍの青色領域の波長域の光の平均透過率が１０％以下となっており、視感透過率が７５％以上であるにもかかわらず、青色領域の波長域の光をほとんど透過させない機能を付加することができるため、機能がより高い樹脂体を提供することができることが確認できた。

As shown in Experimental Example 1 in Table 1, when functional addition was performed using a functional dye in the vapor phase transfer dyeing method, the average transmittance of light in the wavelength region of the blue region of 380 nm to 500 nm of 10% or less and a resin body having a luminous transmittance of 75% or more can be obtained. Moreover, as shown in Experimental Example 1 in Table 1, it was confirmed that the Q 2 value was obtained for all signal lights including red signal light, yellow signal light, green signal light, and blue signal light. Therefore, it was shown that this resin body can be used as a lens for driving at night. In the vapor transfer dyeing method, when functional dyes are used to add functions, the average transmittance of light in the blue wavelength range of 380 nm to 500 nm is 10% or less. Although the transmittance is 75% or more, it is possible to add a function that hardly transmits light in the wavelength range of the blue region, so it was confirmed that a resin body with higher functions can be provided. .

In addition, as shown in Experimental Examples 2 to 7 in Table 1, by adding a yellow sublimation dye together with the functional dye for dyeing, the luminous transmittance is 75% or more, and It was confirmed that the resin body can be provided with a function that the transmittance of each wavelength of 410 nm to 430 nm in the wavelength region of the blue region is 5% or less. That is, by using a yellow dye, when the yellow dye is not added, the transmittance is higher than the transmittance in the other blue region wavelength regions 410 nm to 430 nm wavelength region It was also confirmed that the transmittance in the wavelength region of the blue region can be reduced to the same level as the transmittance in the other wavelength regions of the blue region. Therefore, this resin body can satisfactorily reduce the transmittance of almost all wavelengths of light having a wavelength peak within the wavelength range of the blue region, and a more effective resin body can be obtained. shown that it can be done. That is, this resin body can satisfactorily reduce the transmittance of each light even when irradiated with various lights having different wavelength peaks in the wavelength range of almost the entire blue region. It has been shown.

In addition, as shown in Experimental Examples 2 to 7 in Table 1, dyeing by adding a yellow sublimation dye together with a functional dye can be performed for light in the blue region, particularly in the wavelength region of 380 nm to 495 nm. , the transmittance of each wavelength can be 10% or less, and even when various lights with different wavelength peaks are irradiated in almost the entire blue region, each light can be transmitted well. It has been shown that the rate can be reduced. That is, if the light has a wavelength peak in the wavelength range of 380 nm to 495 nm, the transmittance can be reduced more effectively.

In addition, as shown in Experimental Examples 2 to 7 in Table 1, dyeing was performed by adding a yellow sublimation dye together with the functional dye, resulting in an average transmittance in the blue region of 380 nm to 500 nm. can also be 5% or less, and the transmittance can be reduced more effectively. In addition, as shown in Experimental Examples 2 to 7 in Table 1, the average transmittance in the wavelength range of 400 nm to 490 nm can be 1% or less, and the transmittance can be reduced more effectively. can.

Further, as shown in Experimental Examples 3 and 4 in Table 1, by adding a red sublimation dye and a yellow sublimation dye together with the functional dye and the yellow sublimation dye, It was confirmed that the color of the resin body can be adjusted. For example, it was confirmed that when a red sublimation dye was added, a reddish resin body could be obtained. Moreover, it was confirmed that a bluish resin body can be obtained when a blue sublimation dye is added. In this way, for example, functions can be added, and arbitrary colors can be added, so that a functional resin body dyed in a desired color can be easily obtained.

In addition, as shown in Experimental Examples 5 and 6 in Table 1, in addition to adding functions to the MR8 lens, by performing a coating process, there is a region where the transmittance in the wavelength region of the blue region is high. , it was confirmed that the luminous transmittance could be further improved. Even when the coating treatment was performed, the average transmittance in the wavelength region of the blue region was 10% or less, and it was confirmed that the function was sufficiently added.

表２の比較例１に示されるように、従来の浸透法にて、機能性染料を用いて機能付加を行った場合には、３８０ｎｍ～５００ｎｍの青色領域の波長域の光の平均透過率を１０％以下とする機能を付加することができないことが確認された。

As shown in Comparative Example 1 in Table 2, when functional addition was performed using a functional dye by the conventional permeation method, the average transmittance of light in the wavelength region of the blue region of 380 nm to 500 nm was reduced. It was confirmed that a function to reduce the density to 10% or less could not be added.

Further, as shown in the experimental examples of Comparative Examples 2 to 7 in Table 2, when a yellow sublimation dye is used instead of a functional dye in the vapor phase transfer dyeing method, a blue color of 380 nm to 500 nm It was confirmed that the function of reducing the average transmittance of light in the wavelength range of the region to 10% or less could not be added. It was the same even when the coating treatment was performed.

1 function-adding substrate 2 substrate 8 lens 10 dye applicator 11 inkjet printer 12 personal computer 13 ink cartridge 14 mounting unit 15 inkjet head 16 control unit 20 memory 30 vapor deposition device 50 dye fixing device 100 manufacturing system

Claims (6)

A method for manufacturing a functional resin body that reduces the transmittance of a wavelength region in the blue region with respect to a resin body,
a first step of obtaining a substrate for adding a function by coating a substrate with a merocyanine-based functional dye that absorbs light in the blue region and has sublimation properties;
The function-adding substrate obtained in the first step is opposed to the resin body, and the function-adding substrate is heated to sublimate the functional dye applied to the function-adding substrate, thereby obtaining the function. a second step of attaching a sexual dye to the resin body;
a third step of fixing the functional dye to the resin body by heating the resin body to which the functional dye is attached in the second step;
with
A method for producing a functional resin body, characterized by adding a function to the resin body such that the luminous transmittance is 75% or more and the average transmittance in the wavelength region of the blue region is 10% or less. In the method for manufacturing a functional resin body according to claim 1,
The first step obtains the function-adding substrate further coated with a sublimable sublimable dye, which is a yellow dye for dyeing the resin body,
The second step includes sublimating the sublimable dye applied to the function-adding substrate to adhere the sublimable dye to the resin body,
The third step heats the resin body to which the sublimation dye is attached in the second step, thereby fixing the sublimation dye to the resin body,
The resin body is provided with a function that the luminous transmittance is 75% or more and the transmittance of each wavelength of 410 nm to 430 nm in the wavelength region of the blue region is 5% or less. A method for producing a functional resin body. In the method for manufacturing a functional resin body according to claim 2 ,
A method for producing a functional resin body, wherein the sublimable dye further contains at least one of a red dye and a blue dye. In the method for producing a functional resin body according to any one of claims 1 to 3,
In the first step, the substrate for adding functions is obtained by printing a dyeing ink containing the functional dye on the substrate using a printing device. Method. In the method for producing a functional resin body according to any one of claims 1 to 4,
In the second step, the functional-adding substrate obtained in the first step is opposed to the resin body in a non-contact manner, and the functional-adding substrate is heated to apply the functional-adding substrate. A method for producing a functional resin body, comprising sublimating the functional dye to adhere the functional dye to the resin body. In the method for producing a functional resin body according to any one of claims 1 to 5,
A method for producing a functional resin body, wherein the resin body is a lens.

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